reed@android.com | 0680d6c | 2008-12-19 19:46:15 +0000 | [diff] [blame] | 1 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 2 | * Copyright 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
mtklein | de9e7a7 | 2015-03-11 12:01:25 -0700 | [diff] [blame] | 8 | #include "SkTypes.h" // Keep this before any #ifdef ... |
mtklein | 1ee7651 | 2015-11-02 10:20:27 -0800 | [diff] [blame] | 9 | #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS) |
mtklein | de9e7a7 | 2015-03-11 12:01:25 -0700 | [diff] [blame] | 10 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 11 | #ifdef SK_BUILD_FOR_MAC |
| 12 | #import <ApplicationServices/ApplicationServices.h> |
| 13 | #endif |
reed@android.com | 0680d6c | 2008-12-19 19:46:15 +0000 | [diff] [blame] | 14 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 15 | #ifdef SK_BUILD_FOR_IOS |
| 16 | #include <CoreText/CoreText.h> |
reed@google.com | 3dcbd46 | 2013-03-27 13:56:34 +0000 | [diff] [blame] | 17 | #include <CoreText/CTFontManager.h> |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 18 | #include <CoreGraphics/CoreGraphics.h> |
| 19 | #include <CoreFoundation/CoreFoundation.h> |
| 20 | #endif |
| 21 | |
reed | 39a9a50 | 2015-05-12 09:50:04 -0700 | [diff] [blame] | 22 | #include "SkAdvancedTypefaceMetrics.h" |
Hal Canary | 95e3c05 | 2017-01-11 12:44:43 -0500 | [diff] [blame] | 23 | #include "SkAutoMalloc.h" |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 24 | #include "SkCGUtils.h" |
Cary Clark | a4083c9 | 2017-09-15 11:59:23 -0400 | [diff] [blame] | 25 | #include "SkColorData.h" |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 26 | #include "SkDescriptor.h" |
| 27 | #include "SkEndian.h" |
jvanverth | 02802f6 | 2015-07-02 06:42:49 -0700 | [diff] [blame] | 28 | #include "SkFloatingPoint.h" |
mtklein | 1b24933 | 2015-07-07 12:21:21 -0700 | [diff] [blame] | 29 | #include "SkFontDescriptor.h" |
| 30 | #include "SkFontMgr.h" |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 31 | #include "SkGlyph.h" |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame] | 32 | #include "SkMakeUnique.h" |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 33 | #include "SkMaskGamma.h" |
halcanary | 4dbbd04 | 2016-06-07 17:21:10 -0700 | [diff] [blame] | 34 | #include "SkMathPriv.h" |
mtklein | 1b24933 | 2015-07-07 12:21:21 -0700 | [diff] [blame] | 35 | #include "SkMutex.h" |
bungeman | 4ec46aa | 2017-02-15 17:49:12 -0500 | [diff] [blame] | 36 | #include "SkOTTable_OS_2.h" |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 37 | #include "SkOTUtils.h" |
mtklein | ffa4a92 | 2016-05-05 16:05:56 -0700 | [diff] [blame] | 38 | #include "SkOnce.h" |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 39 | #include "SkPaint.h" |
| 40 | #include "SkPath.h" |
mtklein | 1b24933 | 2015-07-07 12:21:21 -0700 | [diff] [blame] | 41 | #include "SkSFNTHeader.h" |
jvanverth | 02802f6 | 2015-07-02 06:42:49 -0700 | [diff] [blame] | 42 | #include "SkStream.h" |
mtklein | 1b24933 | 2015-07-07 12:21:21 -0700 | [diff] [blame] | 43 | #include "SkString.h" |
bungeman | e280d06 | 2016-03-24 11:27:05 -0700 | [diff] [blame] | 44 | #include "SkTemplates.h" |
mtklein | 1b24933 | 2015-07-07 12:21:21 -0700 | [diff] [blame] | 45 | #include "SkTypefaceCache.h" |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 46 | #include "SkTypeface_mac.h" |
| 47 | #include "SkUtils.h" |
reed@google.com | f77b35d | 2013-05-02 20:39:44 +0000 | [diff] [blame] | 48 | |
bungeman | 3e306f6 | 2017-03-29 11:32:02 -0400 | [diff] [blame] | 49 | #include <dlfcn.h> |
| 50 | |
reed | d0f4173 | 2015-07-10 12:08:38 -0700 | [diff] [blame] | 51 | // Experimental code to use a global lock whenever we access CG, to see if this reduces |
| 52 | // crashes in Chrome |
| 53 | #define USE_GLOBAL_MUTEX_FOR_CG_ACCESS |
| 54 | |
| 55 | #ifdef USE_GLOBAL_MUTEX_FOR_CG_ACCESS |
reed | 086eea9 | 2016-05-04 17:12:46 -0700 | [diff] [blame] | 56 | SK_DECLARE_STATIC_MUTEX(gCGMutex); |
reed | d0f4173 | 2015-07-10 12:08:38 -0700 | [diff] [blame] | 57 | #define AUTO_CG_LOCK() SkAutoMutexAcquire amc(gCGMutex) |
| 58 | #else |
| 59 | #define AUTO_CG_LOCK() |
| 60 | #endif |
| 61 | |
bungeman | 3b4b66c | 2015-01-08 08:33:44 -0800 | [diff] [blame] | 62 | // Set to make glyph bounding boxes visible. |
| 63 | #define SK_SHOW_TEXT_BLIT_COVERAGE 0 |
| 64 | |
Mike Reed | 342a9fa | 2017-05-03 15:48:22 -0400 | [diff] [blame] | 65 | CTFontRef SkTypeface_GetCTFontRef(const SkTypeface* face) { |
| 66 | return face ? (CTFontRef)face->internal_private_getCTFontRef() : nullptr; |
| 67 | } |
| 68 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 69 | class SkScalerContext_Mac; |
| 70 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 71 | struct CFSafeRelease { |
| 72 | void operator()(CFTypeRef cfTypeRef) { |
| 73 | if (cfTypeRef) { |
| 74 | CFRelease(cfTypeRef); |
| 75 | } |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 76 | } |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 77 | }; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 78 | template <typename CFRef> using UniqueCFRef = |
| 79 | std::unique_ptr<skstd::remove_pointer_t<CFRef>, CFSafeRelease>; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 80 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 81 | static UniqueCFRef<CFStringRef> make_CFString(const char str[]) { |
| 82 | return UniqueCFRef<CFStringRef>(CFStringCreateWithCString(nullptr, str, kCFStringEncodingUTF8)); |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 83 | } |
| 84 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 85 | // inline versions of these rect helpers |
| 86 | |
| 87 | static bool CGRectIsEmpty_inline(const CGRect& rect) { |
| 88 | return rect.size.width <= 0 || rect.size.height <= 0; |
| 89 | } |
| 90 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 91 | static CGFloat CGRectGetMinX_inline(const CGRect& rect) { |
| 92 | return rect.origin.x; |
| 93 | } |
| 94 | |
| 95 | static CGFloat CGRectGetMaxX_inline(const CGRect& rect) { |
| 96 | return rect.origin.x + rect.size.width; |
| 97 | } |
| 98 | |
| 99 | static CGFloat CGRectGetMinY_inline(const CGRect& rect) { |
| 100 | return rect.origin.y; |
| 101 | } |
| 102 | |
| 103 | static CGFloat CGRectGetMaxY_inline(const CGRect& rect) { |
| 104 | return rect.origin.y + rect.size.height; |
| 105 | } |
| 106 | |
| 107 | static CGFloat CGRectGetWidth_inline(const CGRect& rect) { |
| 108 | return rect.size.width; |
| 109 | } |
| 110 | |
| 111 | /////////////////////////////////////////////////////////////////////////////// |
| 112 | |
| 113 | static void sk_memset_rect32(uint32_t* ptr, uint32_t value, |
reed@google.com | 7fa2a65 | 2014-01-27 13:42:58 +0000 | [diff] [blame] | 114 | int width, int height, size_t rowBytes) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 115 | SkASSERT(width); |
| 116 | SkASSERT(width * sizeof(uint32_t) <= rowBytes); |
| 117 | |
| 118 | if (width >= 32) { |
| 119 | while (height) { |
| 120 | sk_memset32(ptr, value, width); |
| 121 | ptr = (uint32_t*)((char*)ptr + rowBytes); |
| 122 | height -= 1; |
| 123 | } |
| 124 | return; |
| 125 | } |
| 126 | |
| 127 | rowBytes -= width * sizeof(uint32_t); |
| 128 | |
| 129 | if (width >= 8) { |
| 130 | while (height) { |
| 131 | int w = width; |
| 132 | do { |
| 133 | *ptr++ = value; *ptr++ = value; |
| 134 | *ptr++ = value; *ptr++ = value; |
| 135 | *ptr++ = value; *ptr++ = value; |
| 136 | *ptr++ = value; *ptr++ = value; |
| 137 | w -= 8; |
| 138 | } while (w >= 8); |
| 139 | while (--w >= 0) { |
| 140 | *ptr++ = value; |
| 141 | } |
| 142 | ptr = (uint32_t*)((char*)ptr + rowBytes); |
| 143 | height -= 1; |
| 144 | } |
| 145 | } else { |
| 146 | while (height) { |
| 147 | int w = width; |
| 148 | do { |
| 149 | *ptr++ = value; |
| 150 | } while (--w > 0); |
| 151 | ptr = (uint32_t*)((char*)ptr + rowBytes); |
| 152 | height -= 1; |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 157 | typedef uint32_t CGRGBPixel; |
| 158 | |
| 159 | static unsigned CGRGBPixel_getAlpha(CGRGBPixel pixel) { |
| 160 | return pixel & 0xFF; |
| 161 | } |
| 162 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 163 | static CGFloat ScalarToCG(SkScalar scalar) { |
| 164 | if (sizeof(CGFloat) == sizeof(float)) { |
| 165 | return SkScalarToFloat(scalar); |
| 166 | } else { |
| 167 | SkASSERT(sizeof(CGFloat) == sizeof(double)); |
| 168 | return (CGFloat) SkScalarToDouble(scalar); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | static SkScalar CGToScalar(CGFloat cgFloat) { |
| 173 | if (sizeof(CGFloat) == sizeof(float)) { |
benjaminwagner | 6b3eacb | 2016-03-24 19:07:58 -0700 | [diff] [blame] | 174 | return SkFloatToScalar(cgFloat); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 175 | } else { |
| 176 | SkASSERT(sizeof(CGFloat) == sizeof(double)); |
| 177 | return SkDoubleToScalar(cgFloat); |
| 178 | } |
| 179 | } |
| 180 | |
benjaminwagner | 6b3eacb | 2016-03-24 19:07:58 -0700 | [diff] [blame] | 181 | static float CGToFloat(CGFloat cgFloat) { |
| 182 | if (sizeof(CGFloat) == sizeof(float)) { |
| 183 | return cgFloat; |
| 184 | } else { |
| 185 | SkASSERT(sizeof(CGFloat) == sizeof(double)); |
| 186 | return static_cast<float>(cgFloat); |
| 187 | } |
| 188 | } |
| 189 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 190 | static CGAffineTransform MatrixToCGAffineTransform(const SkMatrix& matrix) { |
| 191 | return CGAffineTransformMake( ScalarToCG(matrix[SkMatrix::kMScaleX]), |
| 192 | -ScalarToCG(matrix[SkMatrix::kMSkewY] ), |
| 193 | -ScalarToCG(matrix[SkMatrix::kMSkewX] ), |
| 194 | ScalarToCG(matrix[SkMatrix::kMScaleY]), |
| 195 | ScalarToCG(matrix[SkMatrix::kMTransX]), |
| 196 | ScalarToCG(matrix[SkMatrix::kMTransY])); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 197 | } |
| 198 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 199 | /////////////////////////////////////////////////////////////////////////////// |
| 200 | |
| 201 | #define BITMAP_INFO_RGB (kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Host) |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 202 | |
| 203 | /** |
| 204 | * There does not appear to be a publicly accessable API for determining if lcd |
| 205 | * font smoothing will be applied if we request it. The main issue is that if |
| 206 | * smoothing is applied a gamma of 2.0 will be used, if not a gamma of 1.0. |
| 207 | */ |
| 208 | static bool supports_LCD() { |
Mike Klein | 7028443 | 2017-09-19 13:07:27 -0400 | [diff] [blame] | 209 | static bool gSupportsLCD = []{ |
| 210 | uint32_t rgb = 0; |
| 211 | UniqueCFRef<CGColorSpaceRef> colorspace(CGColorSpaceCreateDeviceRGB()); |
| 212 | UniqueCFRef<CGContextRef> cgContext( |
| 213 | CGBitmapContextCreate(&rgb, 1, 1, 8, 4, colorspace.get(), BITMAP_INFO_RGB)); |
| 214 | UniqueCFRef<CTFontRef> ctFont(CTFontCreateWithName(CFSTR("Helvetica"), 16, nullptr)); |
| 215 | CGContextSetShouldSmoothFonts(cgContext.get(), true); |
| 216 | CGContextSetShouldAntialias(cgContext.get(), true); |
| 217 | CGContextSetTextDrawingMode(cgContext.get(), kCGTextFill); |
| 218 | CGContextSetGrayFillColor(cgContext.get(), 1, 1); |
| 219 | CGPoint point = CGPointMake(-1, 0); |
| 220 | static const UniChar pipeChar = '|'; |
| 221 | CGGlyph pipeGlyph; |
| 222 | CTFontGetGlyphsForCharacters(ctFont.get(), &pipeChar, &pipeGlyph, 1); |
| 223 | CTFontDrawGlyphs(ctFont.get(), &pipeGlyph, &point, 1, cgContext.get()); |
ccameron | f8ee5b4 | 2016-10-04 15:02:02 -0700 | [diff] [blame] | 224 | |
Mike Klein | 7028443 | 2017-09-19 13:07:27 -0400 | [diff] [blame] | 225 | uint32_t r = (rgb >> 16) & 0xFF; |
| 226 | uint32_t g = (rgb >> 8) & 0xFF; |
| 227 | uint32_t b = (rgb >> 0) & 0xFF; |
| 228 | return (r != g || r != b); |
| 229 | }(); |
| 230 | return gSupportsLCD; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 231 | } |
| 232 | |
| 233 | class Offscreen { |
| 234 | public: |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 235 | Offscreen() |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 236 | : fRGBSpace(nullptr) |
| 237 | , fCG(nullptr) |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 238 | , fDoAA(false) |
| 239 | , fDoLCD(false) |
| 240 | { |
| 241 | fSize.set(0, 0); |
| 242 | } |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 243 | |
| 244 | CGRGBPixel* getCG(const SkScalerContext_Mac& context, const SkGlyph& glyph, |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 245 | CGGlyph glyphID, size_t* rowBytesPtr, bool generateA8FromLCD); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 246 | |
| 247 | private: |
| 248 | enum { |
| 249 | kSize = 32 * 32 * sizeof(CGRGBPixel) |
| 250 | }; |
| 251 | SkAutoSMalloc<kSize> fImageStorage; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 252 | UniqueCFRef<CGColorSpaceRef> fRGBSpace; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 253 | |
| 254 | // cached state |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 255 | UniqueCFRef<CGContextRef> fCG; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 256 | SkISize fSize; |
| 257 | bool fDoAA; |
| 258 | bool fDoLCD; |
| 259 | |
| 260 | static int RoundSize(int dimension) { |
| 261 | return SkNextPow2(dimension); |
| 262 | } |
| 263 | }; |
| 264 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 265 | /////////////////////////////////////////////////////////////////////////////// |
| 266 | |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 267 | static bool find_dict_CGFloat(CFDictionaryRef dict, CFStringRef name, CGFloat* value) { |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 268 | CFNumberRef num; |
| 269 | return CFDictionaryGetValueIfPresent(dict, name, (const void**)&num) |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 270 | && CFNumberIsFloatType(num) |
| 271 | && CFNumberGetValue(num, kCFNumberCGFloatType, value); |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 272 | } |
| 273 | |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 274 | template <typename S, typename D, typename C> struct LinearInterpolater { |
| 275 | struct Mapping { |
| 276 | S src_val; |
| 277 | D dst_val; |
| 278 | }; |
| 279 | constexpr LinearInterpolater(Mapping const mapping[], int mappingCount) |
| 280 | : fMapping(mapping), fMappingCount(mappingCount) {} |
| 281 | |
| 282 | static D map(S value, S src_min, S src_max, D dst_min, D dst_max) { |
| 283 | SkASSERT(src_min < src_max); |
| 284 | SkASSERT(dst_min <= dst_max); |
| 285 | return C()(dst_min + (((value - src_min) * (dst_max - dst_min)) / (src_max - src_min))); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 286 | } |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 287 | |
bungeman | f1ef1fa | 2017-02-09 14:23:46 -0500 | [diff] [blame] | 288 | D map(S val) const { |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 289 | // -Inf to [0] |
| 290 | if (val < fMapping[0].src_val) { |
| 291 | return fMapping[0].dst_val; |
| 292 | } |
| 293 | |
| 294 | // Linear from [i] to [i+1] |
| 295 | for (int i = 0; i < fMappingCount - 1; ++i) { |
| 296 | if (val < fMapping[i+1].src_val) { |
| 297 | return map(val, fMapping[i].src_val, fMapping[i+1].src_val, |
| 298 | fMapping[i].dst_val, fMapping[i+1].dst_val); |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | // From [n] to +Inf |
| 303 | // if (fcweight < Inf) |
| 304 | return fMapping[fMappingCount - 1].dst_val; |
| 305 | } |
| 306 | |
| 307 | Mapping const * fMapping; |
| 308 | int fMappingCount; |
| 309 | }; |
| 310 | |
| 311 | struct RoundCGFloatToInt { |
| 312 | int operator()(CGFloat s) { return s + 0.5; } |
| 313 | }; |
bungeman | f1ef1fa | 2017-02-09 14:23:46 -0500 | [diff] [blame] | 314 | struct CGFloatIdentity { |
| 315 | CGFloat operator()(CGFloat s) { return s; } |
| 316 | }; |
| 317 | |
bungeman | 3e306f6 | 2017-03-29 11:32:02 -0400 | [diff] [blame] | 318 | /** Returns the [-1, 1] CTFontDescriptor weights for the |
| 319 | * <0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000> CSS weights. |
| 320 | * |
| 321 | * It is assumed that the values will be interpolated linearly between these points. |
| 322 | * NSFontWeightXXX were added in 10.11, appear in 10.10, but do not appear in 10.9. |
| 323 | * The actual values appear to be stable, but they may change in the future without notice. |
| 324 | */ |
| 325 | static CGFloat(&get_NSFontWeight_mapping())[11] { |
| 326 | |
| 327 | // Declarations in <AppKit/AppKit.h> on macOS, <UIKit/UIKit.h> on iOS |
| 328 | #ifdef SK_BUILD_FOR_MAC |
| 329 | # define SK_KIT_FONT_WEIGHT_PREFIX "NS" |
| 330 | #endif |
| 331 | #ifdef SK_BUILD_FOR_IOS |
| 332 | # define SK_KIT_FONT_WEIGHT_PREFIX "UI" |
| 333 | #endif |
| 334 | static constexpr struct { |
| 335 | CGFloat defaultValue; |
| 336 | const char* name; |
| 337 | } nsFontWeightLoaderInfos[] = { |
| 338 | { -0.80f, SK_KIT_FONT_WEIGHT_PREFIX "FontWeightUltraLight" }, |
| 339 | { -0.60f, SK_KIT_FONT_WEIGHT_PREFIX "FontWeightThin" }, |
| 340 | { -0.40f, SK_KIT_FONT_WEIGHT_PREFIX "FontWeightLight" }, |
| 341 | { 0.00f, SK_KIT_FONT_WEIGHT_PREFIX "FontWeightRegular" }, |
| 342 | { 0.23f, SK_KIT_FONT_WEIGHT_PREFIX "FontWeightMedium" }, |
| 343 | { 0.30f, SK_KIT_FONT_WEIGHT_PREFIX "FontWeightSemibold" }, |
| 344 | { 0.40f, SK_KIT_FONT_WEIGHT_PREFIX "FontWeightBold" }, |
| 345 | { 0.56f, SK_KIT_FONT_WEIGHT_PREFIX "FontWeightHeavy" }, |
| 346 | { 0.62f, SK_KIT_FONT_WEIGHT_PREFIX "FontWeightBlack" }, |
| 347 | }; |
| 348 | |
| 349 | static_assert(SK_ARRAY_COUNT(nsFontWeightLoaderInfos) == 9, ""); |
| 350 | static CGFloat nsFontWeights[11]; |
| 351 | static SkOnce once; |
| 352 | once([&] { |
| 353 | size_t i = 0; |
| 354 | nsFontWeights[i++] = -1.00; |
| 355 | for (const auto& nsFontWeightLoaderInfo : nsFontWeightLoaderInfos) { |
| 356 | void* nsFontWeightValuePtr = dlsym(RTLD_DEFAULT, nsFontWeightLoaderInfo.name); |
| 357 | if (nsFontWeightValuePtr) { |
| 358 | nsFontWeights[i++] = *(static_cast<CGFloat*>(nsFontWeightValuePtr)); |
| 359 | } else { |
| 360 | nsFontWeights[i++] = nsFontWeightLoaderInfo.defaultValue; |
| 361 | } |
| 362 | } |
| 363 | nsFontWeights[i++] = 1.00; |
| 364 | }); |
| 365 | return nsFontWeights; |
| 366 | } |
| 367 | |
bungeman | f1ef1fa | 2017-02-09 14:23:46 -0500 | [diff] [blame] | 368 | /** Convert the [0, 1000] CSS weight to [-1, 1] CTFontDescriptor weight (for system fonts). |
| 369 | * |
| 370 | * The -1 to 1 weights reported by CTFontDescriptors have different mappings depending on if the |
| 371 | * CTFont is native or created from a CGDataProvider. |
| 372 | */ |
| 373 | static CGFloat fontstyle_to_ct_weight(int fontstyleWeight) { |
| 374 | using Interpolator = LinearInterpolater<int, CGFloat, CGFloatIdentity>; |
| 375 | |
| 376 | // Note that Mac supports the old OS2 version A so 0 through 10 are as if multiplied by 100. |
| 377 | // However, on this end we can't tell, so this is ignored. |
| 378 | |
bungeman | 3e306f6 | 2017-03-29 11:32:02 -0400 | [diff] [blame] | 379 | static Interpolator::Mapping nativeWeightMappings[11]; |
| 380 | static SkOnce once; |
| 381 | once([&] { |
| 382 | CGFloat(&nsFontWeights)[11] = get_NSFontWeight_mapping(); |
| 383 | for (int i = 0; i < 11; ++i) { |
| 384 | nativeWeightMappings[i].src_val = i * 100; |
| 385 | nativeWeightMappings[i].dst_val = nsFontWeights[i]; |
| 386 | } |
| 387 | }); |
bungeman | f1ef1fa | 2017-02-09 14:23:46 -0500 | [diff] [blame] | 388 | static constexpr Interpolator nativeInterpolator( |
| 389 | nativeWeightMappings, SK_ARRAY_COUNT(nativeWeightMappings)); |
| 390 | |
| 391 | return nativeInterpolator.map(fontstyleWeight); |
| 392 | } |
| 393 | |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 394 | |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 395 | /** Convert the [-1, 1] CTFontDescriptor weight to [0, 1000] CSS weight. |
| 396 | * |
| 397 | * The -1 to 1 weights reported by CTFontDescriptors have different mappings depending on if the |
| 398 | * CTFont is native or created from a CGDataProvider. |
| 399 | */ |
| 400 | static int ct_weight_to_fontstyle(CGFloat cgWeight, bool fromDataProvider) { |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 401 | using Interpolator = LinearInterpolater<CGFloat, int, RoundCGFloatToInt>; |
| 402 | |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 403 | // Note that Mac supports the old OS2 version A so 0 through 10 are as if multiplied by 100. |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 404 | // However, on this end we can't tell, so this is ignored. |
| 405 | |
| 406 | /** This mapping for CGDataProvider created fonts is determined by creating font data with every |
| 407 | * weight, creating a CTFont, and asking the CTFont for its weight. See the TypefaceStyle test |
| 408 | * in tests/TypefaceTest.cpp for the code used to determine these values. |
| 409 | */ |
| 410 | static constexpr Interpolator::Mapping dataProviderWeightMappings[] = { |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 411 | { -1.00, 0 }, |
| 412 | { -0.70, 100 }, |
| 413 | { -0.50, 200 }, |
| 414 | { -0.23, 300 }, |
| 415 | { 0.00, 400 }, |
| 416 | { 0.20, 500 }, |
| 417 | { 0.30, 600 }, |
| 418 | { 0.40, 700 }, |
| 419 | { 0.60, 800 }, |
| 420 | { 0.80, 900 }, |
| 421 | { 1.00, 1000 }, |
| 422 | }; |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 423 | static constexpr Interpolator dataProviderInterpolator( |
| 424 | dataProviderWeightMappings, SK_ARRAY_COUNT(dataProviderWeightMappings)); |
| 425 | |
bungeman | 3e306f6 | 2017-03-29 11:32:02 -0400 | [diff] [blame] | 426 | static Interpolator::Mapping nativeWeightMappings[11]; |
| 427 | static SkOnce once; |
| 428 | once([&] { |
| 429 | CGFloat(&nsFontWeights)[11] = get_NSFontWeight_mapping(); |
| 430 | for (int i = 0; i < 11; ++i) { |
| 431 | nativeWeightMappings[i].src_val = nsFontWeights[i]; |
| 432 | nativeWeightMappings[i].dst_val = i * 100; |
| 433 | } |
| 434 | }); |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 435 | static constexpr Interpolator nativeInterpolator( |
| 436 | nativeWeightMappings, SK_ARRAY_COUNT(nativeWeightMappings)); |
| 437 | |
| 438 | return fromDataProvider ? dataProviderInterpolator.map(cgWeight) |
| 439 | : nativeInterpolator.map(cgWeight); |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 440 | } |
| 441 | |
bungeman | f1ef1fa | 2017-02-09 14:23:46 -0500 | [diff] [blame] | 442 | /** Convert the [0, 10] CSS weight to [-1, 1] CTFontDescriptor width. */ |
| 443 | static int fontstyle_to_ct_width(int fontstyleWidth) { |
| 444 | using Interpolator = LinearInterpolater<int, CGFloat, CGFloatIdentity>; |
| 445 | |
| 446 | // Values determined by creating font data with every width, creating a CTFont, |
| 447 | // and asking the CTFont for its width. See TypefaceStyle test for basics. |
| 448 | static constexpr Interpolator::Mapping widthMappings[] = { |
| 449 | { 0, -0.5 }, |
| 450 | { 10, 0.5 }, |
| 451 | }; |
| 452 | static constexpr Interpolator interpolator(widthMappings, SK_ARRAY_COUNT(widthMappings)); |
| 453 | return interpolator.map(fontstyleWidth); |
| 454 | } |
| 455 | |
| 456 | /** Convert the [-1, 1] CTFontDescriptor width to [0, 10] CSS weight. */ |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 457 | static int ct_width_to_fontstyle(CGFloat cgWidth) { |
| 458 | using Interpolator = LinearInterpolater<CGFloat, int, RoundCGFloatToInt>; |
| 459 | |
| 460 | // Values determined by creating font data with every width, creating a CTFont, |
| 461 | // and asking the CTFont for its width. See TypefaceStyle test for basics. |
| 462 | static constexpr Interpolator::Mapping widthMappings[] = { |
| 463 | { -0.5, 0 }, |
| 464 | { 0.5, 10 }, |
| 465 | }; |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 466 | static constexpr Interpolator interpolator(widthMappings, SK_ARRAY_COUNT(widthMappings)); |
| 467 | return interpolator.map(cgWidth); |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 468 | } |
| 469 | |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 470 | static SkFontStyle fontstyle_from_descriptor(CTFontDescriptorRef desc, bool fromDataProvider) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 471 | UniqueCFRef<CFTypeRef> fontTraits(CTFontDescriptorCopyAttribute(desc, kCTFontTraitsAttribute)); |
| 472 | if (!fontTraits || CFDictionaryGetTypeID() != CFGetTypeID(fontTraits.get())) { |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 473 | return SkFontStyle(); |
| 474 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 475 | UniqueCFRef<CFDictionaryRef> fontTraitsDict(static_cast<CFDictionaryRef>(fontTraits.release())); |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 476 | |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 477 | CGFloat weight, width, slant; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 478 | if (!find_dict_CGFloat(fontTraitsDict.get(), kCTFontWeightTrait, &weight)) { |
bungeman | 336fdf2 | 2014-11-10 07:48:55 -0800 | [diff] [blame] | 479 | weight = 0; |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 480 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 481 | if (!find_dict_CGFloat(fontTraitsDict.get(), kCTFontWidthTrait, &width)) { |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 482 | width = 0; |
| 483 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 484 | if (!find_dict_CGFloat(fontTraitsDict.get(), kCTFontSlantTrait, &slant)) { |
bungeman | 336fdf2 | 2014-11-10 07:48:55 -0800 | [diff] [blame] | 485 | slant = 0; |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 486 | } |
| 487 | |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 488 | return SkFontStyle(ct_weight_to_fontstyle(weight, fromDataProvider), |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 489 | ct_width_to_fontstyle(width), |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 490 | slant ? SkFontStyle::kItalic_Slant |
bungeman | b4bb7d8 | 2016-04-27 10:21:04 -0700 | [diff] [blame] | 491 | : SkFontStyle::kUpright_Slant); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 492 | } |
| 493 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 494 | class SkTypeface_Mac : public SkTypeface { |
| 495 | public: |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 496 | SkTypeface_Mac(UniqueCFRef<CTFontRef> fontRef, UniqueCFRef<CFTypeRef> resourceRef, |
bungeman | 7888401 | 2015-06-08 13:39:12 -0700 | [diff] [blame] | 497 | const SkFontStyle& fs, bool isFixedPitch, |
bungeman | 53d5c6e | 2016-04-08 07:22:29 -0700 | [diff] [blame] | 498 | bool isLocalStream) |
bungeman | e3aea10 | 2016-07-13 05:16:58 -0700 | [diff] [blame] | 499 | : SkTypeface(fs, isFixedPitch) |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 500 | , fFontRef(std::move(fontRef)) |
| 501 | , fOriginatingCFTypeRef(std::move(resourceRef)) |
| 502 | , fHasColorGlyphs( |
| 503 | SkToBool(CTFontGetSymbolicTraits(fFontRef.get()) & kCTFontColorGlyphsTrait)) |
caseq | 26337e9 | 2014-06-30 12:14:52 -0700 | [diff] [blame] | 504 | , fIsLocalStream(isLocalStream) |
reed@google.com | ce8b3de | 2013-03-26 19:30:16 +0000 | [diff] [blame] | 505 | { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 506 | SkASSERT(fFontRef); |
reed@google.com | ce8b3de | 2013-03-26 19:30:16 +0000 | [diff] [blame] | 507 | } |
skia.committer@gmail.com | 37cbc7f | 2013-03-27 07:01:04 +0000 | [diff] [blame] | 508 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 509 | UniqueCFRef<CTFontRef> fFontRef; |
| 510 | UniqueCFRef<CFTypeRef> fOriginatingCFTypeRef; |
bungeman | e3bea5c | 2015-04-07 07:34:36 -0700 | [diff] [blame] | 511 | const bool fHasColorGlyphs; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 512 | |
| 513 | protected: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 514 | int onGetUPEM() const override; |
| 515 | SkStreamAsset* onOpenStream(int* ttcIndex) const override; |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame] | 516 | std::unique_ptr<SkFontData> onMakeFontData() const override; |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 517 | int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[], |
| 518 | int coordinateCount) const override; |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 519 | void onGetFamilyName(SkString* familyName) const override; |
| 520 | SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override; |
| 521 | int onGetTableTags(SkFontTableTag tags[]) const override; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 522 | size_t onGetTableData(SkFontTableTag, size_t offset, size_t length, void* data) const override; |
reed | a9322c2 | 2016-04-12 06:47:05 -0700 | [diff] [blame] | 523 | SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&, |
| 524 | const SkDescriptor*) const override; |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 525 | void onFilterRec(SkScalerContextRec*) const override; |
| 526 | void onGetFontDescriptor(SkFontDescriptor*, bool*) const override; |
Hal Canary | 209e4b1 | 2017-05-04 14:23:55 -0400 | [diff] [blame] | 527 | std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 528 | int onCharsToGlyphs(const void* chars, Encoding, |
| 529 | uint16_t glyphs[], int glyphCount) const override; |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 530 | int onCountGlyphs() const override; |
skia.committer@gmail.com | c1641fc | 2013-03-21 07:01:39 +0000 | [diff] [blame] | 531 | |
Mike Reed | 342a9fa | 2017-05-03 15:48:22 -0400 | [diff] [blame] | 532 | void* onGetCTFontRef() const override { return (void*)fFontRef.get(); } |
| 533 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 534 | private: |
caseq | 26337e9 | 2014-06-30 12:14:52 -0700 | [diff] [blame] | 535 | bool fIsLocalStream; |
reed@google.com | ce8b3de | 2013-03-26 19:30:16 +0000 | [diff] [blame] | 536 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 537 | typedef SkTypeface INHERITED; |
| 538 | }; |
| 539 | |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 540 | static bool find_by_CTFontRef(SkTypeface* cached, void* context) { |
bungeman | 64fb51d | 2015-05-04 12:03:50 -0700 | [diff] [blame] | 541 | CTFontRef self = (CTFontRef)context; |
Mike Reed | 342a9fa | 2017-05-03 15:48:22 -0400 | [diff] [blame] | 542 | CTFontRef other = (CTFontRef)cached->internal_private_getCTFontRef(); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 543 | |
bungeman | 64fb51d | 2015-05-04 12:03:50 -0700 | [diff] [blame] | 544 | return CFEqual(self, other); |
| 545 | } |
| 546 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 547 | /** Creates a typeface, searching the cache if isLocalStream is false. */ |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 548 | static sk_sp<SkTypeface> create_from_CTFontRef(UniqueCFRef<CTFontRef> font, |
| 549 | UniqueCFRef<CFTypeRef> resource, |
| 550 | bool isLocalStream) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 551 | SkASSERT(font); |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 552 | |
| 553 | if (!isLocalStream) { |
| 554 | SkTypeface* face = SkTypefaceCache::FindByProcAndRef(find_by_CTFontRef, (void*)font.get()); |
| 555 | if (face) { |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 556 | return sk_sp<SkTypeface>(face); |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 557 | } |
| 558 | } |
| 559 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 560 | UniqueCFRef<CTFontDescriptorRef> desc(CTFontCopyFontDescriptor(font.get())); |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 561 | SkFontStyle style = fontstyle_from_descriptor(desc.get(), isLocalStream); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 562 | CTFontSymbolicTraits traits = CTFontGetSymbolicTraits(font.get()); |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 563 | bool isFixedPitch = SkToBool(traits & kCTFontMonoSpaceTrait); |
| 564 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 565 | SkTypeface* face = new SkTypeface_Mac(std::move(font), std::move(resource), |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 566 | style, isFixedPitch, isLocalStream); |
| 567 | if (!isLocalStream) { |
| 568 | SkTypefaceCache::Add(face); |
| 569 | } |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 570 | return sk_sp<SkTypeface>(face); |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 571 | } |
| 572 | |
| 573 | /** Creates a typeface from a descriptor, searching the cache. */ |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 574 | static sk_sp<SkTypeface> create_from_desc(CTFontDescriptorRef desc) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 575 | UniqueCFRef<CTFontRef> ctFont(CTFontCreateWithFontDescriptor(desc, 0, nullptr)); |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 576 | if (!ctFont) { |
| 577 | return nullptr; |
| 578 | } |
| 579 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 580 | return create_from_CTFontRef(std::move(ctFont), nullptr, false); |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 581 | } |
| 582 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 583 | static UniqueCFRef<CTFontDescriptorRef> create_descriptor(const char familyName[], |
| 584 | const SkFontStyle& style) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 585 | UniqueCFRef<CFMutableDictionaryRef> cfAttributes( |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 586 | CFDictionaryCreateMutable(kCFAllocatorDefault, 0, |
| 587 | &kCFTypeDictionaryKeyCallBacks, |
| 588 | &kCFTypeDictionaryValueCallBacks)); |
| 589 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 590 | UniqueCFRef<CFMutableDictionaryRef> cfTraits( |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 591 | CFDictionaryCreateMutable(kCFAllocatorDefault, 0, |
| 592 | &kCFTypeDictionaryKeyCallBacks, |
| 593 | &kCFTypeDictionaryValueCallBacks)); |
| 594 | |
bungeman | 83f1f44 | 2017-02-06 13:21:33 -0500 | [diff] [blame] | 595 | if (!cfAttributes || !cfTraits) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 596 | return nullptr; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 597 | } |
| 598 | |
bungeman | f1ef1fa | 2017-02-09 14:23:46 -0500 | [diff] [blame] | 599 | // CTFontTraits (symbolic) |
bungeman | 83f1f44 | 2017-02-06 13:21:33 -0500 | [diff] [blame] | 600 | CTFontSymbolicTraits ctFontTraits = 0; |
| 601 | if (style.weight() >= SkFontStyle::kBold_Weight) { |
| 602 | ctFontTraits |= kCTFontBoldTrait; |
| 603 | } |
| 604 | if (style.slant() != SkFontStyle::kUpright_Slant) { |
| 605 | ctFontTraits |= kCTFontItalicTrait; |
| 606 | } |
| 607 | UniqueCFRef<CFNumberRef> cfFontTraits( |
| 608 | CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &ctFontTraits)); |
| 609 | if (cfFontTraits) { |
| 610 | CFDictionaryAddValue(cfTraits.get(), kCTFontSymbolicTrait, cfFontTraits.get()); |
bungeman | 83f1f44 | 2017-02-06 13:21:33 -0500 | [diff] [blame] | 611 | } |
bungeman | f1ef1fa | 2017-02-09 14:23:46 -0500 | [diff] [blame] | 612 | // CTFontTraits (weight) |
| 613 | CGFloat ctWeight = fontstyle_to_ct_weight(style.weight()); |
| 614 | UniqueCFRef<CFNumberRef> cfFontWeight( |
| 615 | CFNumberCreate(kCFAllocatorDefault, kCFNumberCGFloatType, &ctWeight)); |
| 616 | if (cfFontWeight) { |
| 617 | CFDictionaryAddValue(cfTraits.get(), kCTFontWeightTrait, cfFontWeight.get()); |
| 618 | } |
| 619 | // CTFontTraits (width) |
| 620 | CGFloat ctWidth = fontstyle_to_ct_width(style.weight()); |
| 621 | UniqueCFRef<CFNumberRef> cfFontWidth( |
| 622 | CFNumberCreate(kCFAllocatorDefault, kCFNumberCGFloatType, &ctWidth)); |
| 623 | if (cfFontWidth) { |
| 624 | CFDictionaryAddValue(cfTraits.get(), kCTFontWidthTrait, cfFontWidth.get()); |
| 625 | } |
| 626 | // CTFontTraits (slant) |
| 627 | CGFloat ctSlant = style.slant() == SkFontStyle::kUpright_Slant ? 0 : 1; |
| 628 | UniqueCFRef<CFNumberRef> cfFontSlant( |
| 629 | CFNumberCreate(kCFAllocatorDefault, kCFNumberCGFloatType, &ctSlant)); |
| 630 | if (cfFontSlant) { |
| 631 | CFDictionaryAddValue(cfTraits.get(), kCTFontSlantTrait, cfFontSlant.get()); |
| 632 | } |
| 633 | // CTFontTraits |
| 634 | CFDictionaryAddValue(cfAttributes.get(), kCTFontTraitsAttribute, cfTraits.get()); |
bungeman | 83f1f44 | 2017-02-06 13:21:33 -0500 | [diff] [blame] | 635 | |
| 636 | // CTFontFamilyName |
| 637 | if (familyName) { |
| 638 | UniqueCFRef<CFStringRef> cfFontName = make_CFString(familyName); |
| 639 | if (cfFontName) { |
| 640 | CFDictionaryAddValue(cfAttributes.get(), kCTFontFamilyNameAttribute, cfFontName.get()); |
| 641 | } |
| 642 | } |
bungeman | 64fb51d | 2015-05-04 12:03:50 -0700 | [diff] [blame] | 643 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 644 | return UniqueCFRef<CTFontDescriptorRef>( |
| 645 | CTFontDescriptorCreateWithAttributes(cfAttributes.get())); |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 646 | } |
| 647 | |
| 648 | /** Creates a typeface from a name, searching the cache. */ |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 649 | static sk_sp<SkTypeface> create_from_name(const char familyName[], const SkFontStyle& style) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 650 | UniqueCFRef<CTFontDescriptorRef> desc = create_descriptor(familyName, style); |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 651 | if (!desc) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 652 | return nullptr; |
bungeman | 64fb51d | 2015-05-04 12:03:50 -0700 | [diff] [blame] | 653 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 654 | return create_from_desc(desc.get()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 655 | } |
| 656 | |
| 657 | /////////////////////////////////////////////////////////////////////////////// |
| 658 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 659 | /* This function is visible on the outside. It first searches the cache, and if |
| 660 | * not found, returns a new entry (after adding it to the cache). |
| 661 | */ |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 662 | SkTypeface* SkCreateTypefaceFromCTFont(CTFontRef font, CFTypeRef resource) { |
| 663 | CFRetain(font); |
| 664 | if (resource) { |
| 665 | CFRetain(resource); |
bungeman | 53d5c6e | 2016-04-08 07:22:29 -0700 | [diff] [blame] | 666 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 667 | return create_from_CTFontRef(UniqueCFRef<CTFontRef>(font), |
| 668 | UniqueCFRef<CFTypeRef>(resource), |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 669 | false).release(); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 670 | } |
| 671 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 672 | static const char* map_css_names(const char* name) { |
| 673 | static const struct { |
| 674 | const char* fFrom; // name the caller specified |
| 675 | const char* fTo; // "canonical" name we map to |
| 676 | } gPairs[] = { |
| 677 | { "sans-serif", "Helvetica" }, |
| 678 | { "serif", "Times" }, |
| 679 | { "monospace", "Courier" } |
| 680 | }; |
| 681 | |
| 682 | for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) { |
| 683 | if (strcmp(name, gPairs[i].fFrom) == 0) { |
| 684 | return gPairs[i].fTo; |
| 685 | } |
| 686 | } |
| 687 | return name; // no change |
| 688 | } |
| 689 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 690 | /////////////////////////////////////////////////////////////////////////////// |
| 691 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 692 | class SkScalerContext_Mac : public SkScalerContext { |
| 693 | public: |
bungeman | 7cfd46a | 2016-10-20 16:06:52 -0400 | [diff] [blame] | 694 | SkScalerContext_Mac(sk_sp<SkTypeface_Mac>, const SkScalerContextEffects&, const SkDescriptor*); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 695 | |
| 696 | protected: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 697 | unsigned generateGlyphCount(void) override; |
| 698 | uint16_t generateCharToGlyph(SkUnichar uni) override; |
| 699 | void generateAdvance(SkGlyph* glyph) override; |
| 700 | void generateMetrics(SkGlyph* glyph) override; |
| 701 | void generateImage(const SkGlyph& glyph) override; |
Ben Wagner | 6e9ac12 | 2016-11-11 14:31:06 -0500 | [diff] [blame] | 702 | void generatePath(SkGlyphID glyph, SkPath* path) override; |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 703 | void generateFontMetrics(SkPaint::FontMetrics*) override; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 704 | |
| 705 | private: |
| 706 | static void CTPathElement(void *info, const CGPathElement *element); |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 707 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 708 | /** Returns the offset from the horizontal origin to the vertical origin in SkGlyph units. */ |
| 709 | void getVerticalOffset(CGGlyph glyphID, SkPoint* offset) const; |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 710 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 711 | Offscreen fOffscreen; |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 712 | |
bungeman | 3b4b66c | 2015-01-08 08:33:44 -0800 | [diff] [blame] | 713 | /** Unrotated variant of fCTFont. |
| 714 | * |
| 715 | * In 10.10.1 CTFontGetAdvancesForGlyphs applies the font transform to the width of the |
| 716 | * advances, but always sets the height to 0. This font is used to get the advances of the |
| 717 | * unrotated glyph, and then the rotation is applied separately. |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 718 | * |
| 719 | * CT vertical metrics are pre-rotated (in em space, before transform) 90deg clock-wise. |
bungeman | 18ec7b9 | 2017-02-09 17:15:59 -0500 | [diff] [blame] | 720 | * This makes kCTFontOrientationDefault dangerous, because the metrics from |
| 721 | * kCTFontOrientationHorizontal are in a different space from kCTFontOrientationVertical. |
| 722 | * With kCTFontOrientationVertical the advances must be unrotated. |
bungeman | ef27ce3 | 2015-10-29 09:30:32 -0700 | [diff] [blame] | 723 | * |
| 724 | * Sometimes, creating a copy of a CTFont with the same size but different trasform will select |
| 725 | * different underlying font data. As a result, avoid ever creating more than one CTFont per |
| 726 | * SkScalerContext to ensure that only one CTFont is used. |
| 727 | * |
| 728 | * As a result of the above (and other constraints) this font contains the size, but not the |
| 729 | * transform. The transform must always be applied separately. |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 730 | */ |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 731 | UniqueCFRef<CTFontRef> fCTFont; |
bungeman | ef27ce3 | 2015-10-29 09:30:32 -0700 | [diff] [blame] | 732 | |
| 733 | /** The transform without the font size. */ |
| 734 | CGAffineTransform fTransform; |
| 735 | CGAffineTransform fInvTransform; |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 736 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 737 | UniqueCFRef<CGFontRef> fCGFont; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 738 | uint16_t fGlyphCount; |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 739 | const bool fDoSubPosition; |
| 740 | const bool fVertical; |
| 741 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 742 | friend class Offscreen; |
reed@google.com | 0da4861 | 2013-03-19 16:06:52 +0000 | [diff] [blame] | 743 | |
| 744 | typedef SkScalerContext INHERITED; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 745 | }; |
| 746 | |
bungeman | 7cbeaae | 2015-09-22 09:54:56 -0700 | [diff] [blame] | 747 | // CTFontCreateCopyWithAttributes or CTFontCreateCopyWithSymbolicTraits cannot be used on 10.10 |
bungeman | 0584631 | 2015-09-23 12:51:28 -0700 | [diff] [blame] | 748 | // and later, as they will return different underlying fonts depending on the size requested. |
| 749 | // It is not possible to use descriptors with CTFontCreateWithFontDescriptor, since that does not |
| 750 | // work with non-system fonts. As a result, create the strike specific CTFonts from the underlying |
| 751 | // CGFont. |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 752 | static UniqueCFRef<CTFontRef> ctfont_create_exact_copy(CTFontRef baseFont, CGFloat textSize, |
| 753 | const CGAffineTransform* transform) |
bungeman | 7cbeaae | 2015-09-22 09:54:56 -0700 | [diff] [blame] | 754 | { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 755 | UniqueCFRef<CGFontRef> baseCGFont(CTFontCopyGraphicsFont(baseFont, nullptr)); |
bungeman | 7cbeaae | 2015-09-22 09:54:56 -0700 | [diff] [blame] | 756 | |
bungeman | 0584631 | 2015-09-23 12:51:28 -0700 | [diff] [blame] | 757 | // The last parameter (CTFontDescriptorRef attributes) *must* be nullptr. |
| 758 | // If non-nullptr then with fonts with variation axes, the copy will fail in |
| 759 | // CGFontVariationFromDictCallback when it assumes kCGFontVariationAxisName is CFNumberRef |
| 760 | // which it quite obviously is not. |
bungeman | 7cbeaae | 2015-09-22 09:54:56 -0700 | [diff] [blame] | 761 | |
bungeman | 0584631 | 2015-09-23 12:51:28 -0700 | [diff] [blame] | 762 | // Because we cannot setup the CTFont descriptor to match, the same restriction applies here |
| 763 | // as other uses of CTFontCreateWithGraphicsFont which is that such CTFonts should not escape |
| 764 | // the scaler context, since they aren't 'normal'. |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 765 | return UniqueCFRef<CTFontRef>( |
| 766 | CTFontCreateWithGraphicsFont(baseCGFont.get(), textSize, transform, nullptr)); |
bungeman | 7cbeaae | 2015-09-22 09:54:56 -0700 | [diff] [blame] | 767 | } |
| 768 | |
bungeman | 7cfd46a | 2016-10-20 16:06:52 -0400 | [diff] [blame] | 769 | SkScalerContext_Mac::SkScalerContext_Mac(sk_sp<SkTypeface_Mac> typeface, |
reed | a9322c2 | 2016-04-12 06:47:05 -0700 | [diff] [blame] | 770 | const SkScalerContextEffects& effects, |
reed@google.com | 0da4861 | 2013-03-19 16:06:52 +0000 | [diff] [blame] | 771 | const SkDescriptor* desc) |
bungeman | 7cfd46a | 2016-10-20 16:06:52 -0400 | [diff] [blame] | 772 | : INHERITED(std::move(typeface), effects, desc) |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 773 | , fDoSubPosition(SkToBool(fRec.fFlags & kSubpixelPositioning_Flag)) |
| 774 | , fVertical(SkToBool(fRec.fFlags & kVertical_Flag)) |
| 775 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 776 | { |
reed | d0f4173 | 2015-07-10 12:08:38 -0700 | [diff] [blame] | 777 | AUTO_CG_LOCK(); |
| 778 | |
Mike Reed | 342a9fa | 2017-05-03 15:48:22 -0400 | [diff] [blame] | 779 | CTFontRef ctFont = (CTFontRef)this->getTypeface()->internal_private_getCTFontRef(); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 780 | CFIndex numGlyphs = CTFontGetGlyphCount(ctFont); |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 781 | SkASSERT(numGlyphs >= 1 && numGlyphs <= 0xFFFF); |
| 782 | fGlyphCount = SkToU16(numGlyphs); |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 783 | |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 784 | // CT on (at least) 10.9 will size color glyphs down from the requested size, but not up. |
| 785 | // As a result, it is necessary to know the actual device size and request that. |
| 786 | SkVector scale; |
bungeman | be2284d | 2014-11-25 08:08:09 -0800 | [diff] [blame] | 787 | SkMatrix skTransform; |
bungeman | e55131c | 2016-08-24 12:01:31 -0700 | [diff] [blame] | 788 | bool invertible = fRec.computeMatrices(SkScalerContextRec::kVertical_PreMatrixScale, |
bungeman | 4ec46aa | 2017-02-15 17:49:12 -0500 | [diff] [blame] | 789 | &scale, &skTransform, nullptr, nullptr, nullptr); |
bungeman | aae3091 | 2015-03-02 13:43:26 -0800 | [diff] [blame] | 790 | fTransform = MatrixToCGAffineTransform(skTransform); |
bungeman | 1f0e78d | 2016-08-23 13:19:01 -0700 | [diff] [blame] | 791 | // CGAffineTransformInvert documents that if the transform is non-invertible it will return the |
| 792 | // passed transform unchanged. It does so, but then also prints a message to stdout. Avoid this. |
bungeman | e55131c | 2016-08-24 12:01:31 -0700 | [diff] [blame] | 793 | if (invertible) { |
bungeman | 1f0e78d | 2016-08-23 13:19:01 -0700 | [diff] [blame] | 794 | fInvTransform = CGAffineTransformInvert(fTransform); |
| 795 | } else { |
| 796 | fInvTransform = fTransform; |
| 797 | } |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 798 | |
bungeman | be2284d | 2014-11-25 08:08:09 -0800 | [diff] [blame] | 799 | // The transform contains everything except the requested text size. |
| 800 | // Some properties, like 'trak', are based on the text size (before applying the matrix). |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 801 | CGFloat textSize = ScalarToCG(scale.y()); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 802 | fCTFont = ctfont_create_exact_copy(ctFont, textSize, nullptr); |
| 803 | fCGFont.reset(CTFontCopyGraphicsFont(fCTFont.get(), nullptr)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 804 | } |
| 805 | |
| 806 | CGRGBPixel* Offscreen::getCG(const SkScalerContext_Mac& context, const SkGlyph& glyph, |
| 807 | CGGlyph glyphID, size_t* rowBytesPtr, |
mtklein | bbd4018 | 2015-09-08 08:19:33 -0700 | [diff] [blame] | 808 | bool generateA8FromLCD) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 809 | if (!fRGBSpace) { |
| 810 | //It doesn't appear to matter what color space is specified. |
| 811 | //Regular blends and antialiased text are always (s*a + d*(1-a)) |
| 812 | //and smoothed text is always g=2.0. |
bungeman | e194c49 | 2014-07-16 13:46:06 -0700 | [diff] [blame] | 813 | fRGBSpace.reset(CGColorSpaceCreateDeviceRGB()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 814 | } |
| 815 | |
| 816 | // default to kBW_Format |
| 817 | bool doAA = false; |
| 818 | bool doLCD = false; |
| 819 | |
| 820 | if (SkMask::kBW_Format != glyph.fMaskFormat) { |
| 821 | doLCD = true; |
| 822 | doAA = true; |
| 823 | } |
| 824 | |
| 825 | // FIXME: lcd smoothed un-hinted rasterization unsupported. |
| 826 | if (!generateA8FromLCD && SkMask::kA8_Format == glyph.fMaskFormat) { |
| 827 | doLCD = false; |
| 828 | doAA = true; |
| 829 | } |
| 830 | |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 831 | // If this font might have color glyphs, disable LCD as there's no way to support it. |
| 832 | // CoreText doesn't tell us which format it ended up using, so we can't detect it. |
bungeman | e280d06 | 2016-03-24 11:27:05 -0700 | [diff] [blame] | 833 | // A8 will end up black on transparent, but TODO: we can detect gray and set to A8. |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 834 | if (SkMask::kARGB32_Format == glyph.fMaskFormat) { |
| 835 | doLCD = false; |
| 836 | } |
| 837 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 838 | size_t rowBytes = fSize.fWidth * sizeof(CGRGBPixel); |
| 839 | if (!fCG || fSize.fWidth < glyph.fWidth || fSize.fHeight < glyph.fHeight) { |
| 840 | if (fSize.fWidth < glyph.fWidth) { |
| 841 | fSize.fWidth = RoundSize(glyph.fWidth); |
| 842 | } |
| 843 | if (fSize.fHeight < glyph.fHeight) { |
| 844 | fSize.fHeight = RoundSize(glyph.fHeight); |
| 845 | } |
| 846 | |
| 847 | rowBytes = fSize.fWidth * sizeof(CGRGBPixel); |
| 848 | void* image = fImageStorage.reset(rowBytes * fSize.fHeight); |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 849 | const CGImageAlphaInfo alpha = (SkMask::kARGB32_Format == glyph.fMaskFormat) |
| 850 | ? kCGImageAlphaPremultipliedFirst |
| 851 | : kCGImageAlphaNoneSkipFirst; |
| 852 | const CGBitmapInfo bitmapInfo = kCGBitmapByteOrder32Host | alpha; |
bungeman | e194c49 | 2014-07-16 13:46:06 -0700 | [diff] [blame] | 853 | fCG.reset(CGBitmapContextCreate(image, fSize.fWidth, fSize.fHeight, 8, |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 854 | rowBytes, fRGBSpace.get(), bitmapInfo)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 855 | |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 856 | // Skia handles quantization and subpixel positioning, |
| 857 | // so disable quantization and enabe subpixel positioning in CG. |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 858 | CGContextSetAllowsFontSubpixelQuantization(fCG.get(), false); |
| 859 | CGContextSetShouldSubpixelQuantizeFonts(fCG.get(), false); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 860 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 861 | // Because CG always draws from the horizontal baseline, |
| 862 | // if there is a non-integral translation from the horizontal origin to the vertical origin, |
| 863 | // then CG cannot draw the glyph in the correct location without subpixel positioning. |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 864 | CGContextSetAllowsFontSubpixelPositioning(fCG.get(), true); |
| 865 | CGContextSetShouldSubpixelPositionFonts(fCG.get(), true); |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 866 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 867 | CGContextSetTextDrawingMode(fCG.get(), kCGTextFill); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 868 | |
bungeman | e280d06 | 2016-03-24 11:27:05 -0700 | [diff] [blame] | 869 | // Draw black on white to create mask. (Special path exists to speed this up in CG.) |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 870 | CGContextSetGrayFillColor(fCG.get(), 0.0f, 1.0f); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 871 | |
| 872 | // force our checks below to happen |
| 873 | fDoAA = !doAA; |
| 874 | fDoLCD = !doLCD; |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 875 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 876 | CGContextSetTextMatrix(fCG.get(), context.fTransform); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 877 | } |
| 878 | |
| 879 | if (fDoAA != doAA) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 880 | CGContextSetShouldAntialias(fCG.get(), doAA); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 881 | fDoAA = doAA; |
| 882 | } |
| 883 | if (fDoLCD != doLCD) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 884 | CGContextSetShouldSmoothFonts(fCG.get(), doLCD); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 885 | fDoLCD = doLCD; |
| 886 | } |
| 887 | |
| 888 | CGRGBPixel* image = (CGRGBPixel*)fImageStorage.get(); |
| 889 | // skip rows based on the glyph's height |
| 890 | image += (fSize.fHeight - glyph.fHeight) * fSize.fWidth; |
| 891 | |
bungeman | e280d06 | 2016-03-24 11:27:05 -0700 | [diff] [blame] | 892 | // Erase to white (or transparent black if it's a color glyph, to not composite against white). |
| 893 | uint32_t bgColor = (SkMask::kARGB32_Format != glyph.fMaskFormat) ? 0xFFFFFFFF : 0x00000000; |
| 894 | sk_memset_rect32(image, bgColor, glyph.fWidth, glyph.fHeight, rowBytes); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 895 | |
| 896 | float subX = 0; |
| 897 | float subY = 0; |
| 898 | if (context.fDoSubPosition) { |
| 899 | subX = SkFixedToFloat(glyph.getSubXFixed()); |
| 900 | subY = SkFixedToFloat(glyph.getSubYFixed()); |
| 901 | } |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 902 | |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 903 | // CoreText and CoreGraphics always draw using the horizontal baseline origin. |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 904 | if (context.fVertical) { |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 905 | SkPoint offset; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 906 | context.getVerticalOffset(glyphID, &offset); |
| 907 | subX += offset.fX; |
| 908 | subY += offset.fY; |
| 909 | } |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 910 | |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 911 | CGPoint point = CGPointMake(-glyph.fLeft + subX, glyph.fTop + glyph.fHeight - subY); |
bungeman | aae3091 | 2015-03-02 13:43:26 -0800 | [diff] [blame] | 912 | // Prior to 10.10, CTFontDrawGlyphs acted like CGContextShowGlyphsAtPositions and took |
| 913 | // 'positions' which are in text space. The glyph location (in device space) must be |
| 914 | // mapped into text space, so that CG can convert it back into device space. |
Hal Canary | 55325b7 | 2017-01-03 10:36:17 -0500 | [diff] [blame] | 915 | // In 10.10.1, this is handled directly in CTFontDrawGlyphs. |
bungeman | 1b5f25c | 2015-06-08 14:32:24 -0700 | [diff] [blame] | 916 | // |
bungeman | aae3091 | 2015-03-02 13:43:26 -0800 | [diff] [blame] | 917 | // However, in 10.10.2 color glyphs no longer rotate based on the font transform. |
| 918 | // So always make the font transform identity and place the transform on the context. |
| 919 | point = CGPointApplyAffineTransform(point, context.fInvTransform); |
| 920 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 921 | CTFontDrawGlyphs(context.fCTFont.get(), &glyphID, &point, 1, fCG.get()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 922 | |
| 923 | SkASSERT(rowBytesPtr); |
| 924 | *rowBytesPtr = rowBytes; |
| 925 | return image; |
| 926 | } |
| 927 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 928 | void SkScalerContext_Mac::getVerticalOffset(CGGlyph glyphID, SkPoint* offset) const { |
bungeman | c2ba75b | 2016-12-14 16:53:00 -0500 | [diff] [blame] | 929 | // CTFontGetVerticalTranslationsForGlyphs produces cgVertOffset in CG units (pixels, y up). |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 930 | CGSize cgVertOffset; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 931 | CTFontGetVerticalTranslationsForGlyphs(fCTFont.get(), &glyphID, &cgVertOffset, 1); |
bungeman | ef27ce3 | 2015-10-29 09:30:32 -0700 | [diff] [blame] | 932 | cgVertOffset = CGSizeApplyAffineTransform(cgVertOffset, fTransform); |
| 933 | SkPoint skVertOffset = { CGToScalar(cgVertOffset.width), CGToScalar(cgVertOffset.height) }; |
| 934 | // From CG units (pixels, y up) to SkGlyph units (pixels, y down). |
| 935 | skVertOffset.fY = -skVertOffset.fY; |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 936 | *offset = skVertOffset; |
| 937 | } |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 938 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 939 | unsigned SkScalerContext_Mac::generateGlyphCount(void) { |
| 940 | return fGlyphCount; |
| 941 | } |
| 942 | |
| 943 | uint16_t SkScalerContext_Mac::generateCharToGlyph(SkUnichar uni) { |
reed | d0f4173 | 2015-07-10 12:08:38 -0700 | [diff] [blame] | 944 | AUTO_CG_LOCK(); |
| 945 | |
bungeman@google.com | fb1663a | 2013-10-24 22:32:43 +0000 | [diff] [blame] | 946 | CGGlyph cgGlyph[2]; |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 947 | UniChar theChar[2]; // UniChar is a UTF-16 16-bit code unit. |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 948 | |
| 949 | // Get the glyph |
bungeman@google.com | fb1663a | 2013-10-24 22:32:43 +0000 | [diff] [blame] | 950 | size_t numUniChar = SkUTF16_FromUnichar(uni, theChar); |
| 951 | SkASSERT(sizeof(CGGlyph) <= sizeof(uint16_t)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 952 | |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 953 | // Undocumented behavior of CTFontGetGlyphsForCharacters with non-bmp code points: |
| 954 | // When a surrogate pair is detected, the glyph index used is the index of the high surrogate. |
| 955 | // It is documented that if a mapping is unavailable, the glyph will be set to 0. |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 956 | CTFontGetGlyphsForCharacters(fCTFont.get(), theChar, cgGlyph, numUniChar); |
bungeman@google.com | fb1663a | 2013-10-24 22:32:43 +0000 | [diff] [blame] | 957 | return cgGlyph[0]; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 958 | } |
| 959 | |
| 960 | void SkScalerContext_Mac::generateAdvance(SkGlyph* glyph) { |
| 961 | this->generateMetrics(glyph); |
| 962 | } |
| 963 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 964 | void SkScalerContext_Mac::generateMetrics(SkGlyph* glyph) { |
reed | d0f4173 | 2015-07-10 12:08:38 -0700 | [diff] [blame] | 965 | AUTO_CG_LOCK(); |
| 966 | |
djsollen | 1b27704 | 2014-08-06 06:58:06 -0700 | [diff] [blame] | 967 | const CGGlyph cgGlyph = (CGGlyph) glyph->getGlyphID(); |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 968 | glyph->zeroMetrics(); |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 969 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 970 | // The following block produces cgAdvance in CG units (pixels, y up). |
| 971 | CGSize cgAdvance; |
| 972 | if (fVertical) { |
bungeman | 18ec7b9 | 2017-02-09 17:15:59 -0500 | [diff] [blame] | 973 | CTFontGetAdvancesForGlyphs(fCTFont.get(), kCTFontOrientationVertical, |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 974 | &cgGlyph, &cgAdvance, 1); |
bungeman | 3b4b66c | 2015-01-08 08:33:44 -0800 | [diff] [blame] | 975 | // Vertical advances are returned as widths instead of heights. |
| 976 | SkTSwap(cgAdvance.height, cgAdvance.width); |
| 977 | cgAdvance.height = -cgAdvance.height; |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 978 | } else { |
bungeman | 18ec7b9 | 2017-02-09 17:15:59 -0500 | [diff] [blame] | 979 | CTFontGetAdvancesForGlyphs(fCTFont.get(), kCTFontOrientationHorizontal, |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 980 | &cgGlyph, &cgAdvance, 1); |
| 981 | } |
bungeman | ef27ce3 | 2015-10-29 09:30:32 -0700 | [diff] [blame] | 982 | cgAdvance = CGSizeApplyAffineTransform(cgAdvance, fTransform); |
benjaminwagner | 6b3eacb | 2016-03-24 19:07:58 -0700 | [diff] [blame] | 983 | glyph->fAdvanceX = CGToFloat(cgAdvance.width); |
| 984 | glyph->fAdvanceY = -CGToFloat(cgAdvance.height); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 985 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 986 | // The following produces skBounds in SkGlyph units (pixels, y down), |
| 987 | // or returns early if skBounds would be empty. |
| 988 | SkRect skBounds; |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 989 | |
bungeman | c2ba75b | 2016-12-14 16:53:00 -0500 | [diff] [blame] | 990 | // Glyphs are always drawn from the horizontal origin. The caller must manually use the result |
| 991 | // of CTFontGetVerticalTranslationsForGlyphs to calculate where to draw the glyph for vertical |
| 992 | // glyphs. As a result, always get the horizontal bounds of a glyph and translate it if the |
| 993 | // glyph is vertical. This avoids any diagreement between the various means of retrieving |
| 994 | // vertical metrics. |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 995 | { |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 996 | // CTFontGetBoundingRectsForGlyphs produces cgBounds in CG units (pixels, y up). |
| 997 | CGRect cgBounds; |
bungeman | 18ec7b9 | 2017-02-09 17:15:59 -0500 | [diff] [blame] | 998 | CTFontGetBoundingRectsForGlyphs(fCTFont.get(), kCTFontOrientationHorizontal, |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 999 | &cgGlyph, &cgBounds, 1); |
bungeman | ef27ce3 | 2015-10-29 09:30:32 -0700 | [diff] [blame] | 1000 | cgBounds = CGRectApplyAffineTransform(cgBounds, fTransform); |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 1001 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1002 | // BUG? |
| 1003 | // 0x200B (zero-advance space) seems to return a huge (garbage) bounds, when |
| 1004 | // it should be empty. So, if we see a zero-advance, we check if it has an |
| 1005 | // empty path or not, and if so, we jam the bounds to 0. Hopefully a zero-advance |
| 1006 | // is rare, so we won't incur a big performance cost for this extra check. |
| 1007 | if (0 == cgAdvance.width && 0 == cgAdvance.height) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1008 | UniqueCFRef<CGPathRef> path(CTFontCreatePathForGlyph(fCTFont.get(), cgGlyph, nullptr)); |
| 1009 | if (!path || CGPathIsEmpty(path.get())) { |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1010 | return; |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | if (CGRectIsEmpty_inline(cgBounds)) { |
| 1015 | return; |
| 1016 | } |
| 1017 | |
| 1018 | // Convert cgBounds to SkGlyph units (pixels, y down). |
| 1019 | skBounds = SkRect::MakeXYWH(cgBounds.origin.x, -cgBounds.origin.y - cgBounds.size.height, |
| 1020 | cgBounds.size.width, cgBounds.size.height); |
| 1021 | } |
| 1022 | |
| 1023 | if (fVertical) { |
bungeman | c2ba75b | 2016-12-14 16:53:00 -0500 | [diff] [blame] | 1024 | // Due to possible vertical bounds bugs and simplicity, skBounds is the horizontal bounds. |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1025 | // Convert these horizontal bounds into vertical bounds. |
| 1026 | SkPoint offset; |
bungeman | c2ba75b | 2016-12-14 16:53:00 -0500 | [diff] [blame] | 1027 | this->getVerticalOffset(cgGlyph, &offset); |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1028 | skBounds.offset(offset); |
| 1029 | } |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 1030 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1031 | // Currently the bounds are based on being rendered at (0,0). |
| 1032 | // The top left must not move, since that is the base from which subpixel positioning is offset. |
| 1033 | if (fDoSubPosition) { |
| 1034 | skBounds.fRight += SkFixedToFloat(glyph->getSubXFixed()); |
| 1035 | skBounds.fBottom += SkFixedToFloat(glyph->getSubYFixed()); |
| 1036 | } |
skia.committer@gmail.com | 539f364 | 2013-05-16 07:01:00 +0000 | [diff] [blame] | 1037 | |
Mike Klein | d94e00c | 2017-10-05 11:40:57 -0400 | [diff] [blame] | 1038 | // We're trying to pack left and top into int16_t, |
| 1039 | // and width and height into uint16_t, after outsetting by 1. |
| 1040 | if (!SkRect::MakeXYWH(-32767, -32767, 65535, 65535).contains(skBounds)) { |
| 1041 | return; |
| 1042 | } |
| 1043 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1044 | SkIRect skIBounds; |
| 1045 | skBounds.roundOut(&skIBounds); |
| 1046 | // Expand the bounds by 1 pixel, to give CG room for anti-aliasing. |
| 1047 | // Note that this outset is to allow room for LCD smoothed glyphs. However, the correct outset |
| 1048 | // is not currently known, as CG dilates the outlines by some percentage. |
| 1049 | // Note that if this context is A8 and not back-forming from LCD, there is no need to outset. |
| 1050 | skIBounds.outset(1, 1); |
| 1051 | glyph->fLeft = SkToS16(skIBounds.fLeft); |
| 1052 | glyph->fTop = SkToS16(skIBounds.fTop); |
| 1053 | glyph->fWidth = SkToU16(skIBounds.width()); |
| 1054 | glyph->fHeight = SkToU16(skIBounds.height()); |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1055 | } |
| 1056 | |
Cary Clark | a4083c9 | 2017-09-15 11:59:23 -0400 | [diff] [blame] | 1057 | #include "SkColorData.h" |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1058 | |
Ben Wagner | 7a0248f | 2017-10-18 11:30:56 -0400 | [diff] [blame] | 1059 | static constexpr uint8_t sk_pow2_table(size_t i) { |
| 1060 | return SkToU8(((i * i + 128) / 255)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1061 | } |
| 1062 | |
| 1063 | /** |
| 1064 | * This will invert the gamma applied by CoreGraphics, so we can get linear |
| 1065 | * values. |
| 1066 | * |
| 1067 | * CoreGraphics obscurely defaults to 2.0 as the smoothing gamma value. |
| 1068 | * The color space used does not appear to affect this choice. |
| 1069 | */ |
Ben Wagner | 7a0248f | 2017-10-18 11:30:56 -0400 | [diff] [blame] | 1070 | static constexpr auto gLinearCoverageFromCGLCDValue = SkMakeArray<256>(sk_pow2_table); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1071 | |
| 1072 | static void cgpixels_to_bits(uint8_t dst[], const CGRGBPixel src[], int count) { |
| 1073 | while (count > 0) { |
| 1074 | uint8_t mask = 0; |
| 1075 | for (int i = 7; i >= 0; --i) { |
bungeman | e280d06 | 2016-03-24 11:27:05 -0700 | [diff] [blame] | 1076 | mask |= ((CGRGBPixel_getAlpha(*src++) >> 7) ^ 0x1) << i; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1077 | if (0 == --count) { |
| 1078 | break; |
| 1079 | } |
| 1080 | } |
| 1081 | *dst++ = mask; |
| 1082 | } |
| 1083 | } |
| 1084 | |
| 1085 | template<bool APPLY_PREBLEND> |
| 1086 | static inline uint8_t rgb_to_a8(CGRGBPixel rgb, const uint8_t* table8) { |
bungeman | e280d06 | 2016-03-24 11:27:05 -0700 | [diff] [blame] | 1087 | U8CPU r = 0xFF - ((rgb >> 16) & 0xFF); |
| 1088 | U8CPU g = 0xFF - ((rgb >> 8) & 0xFF); |
| 1089 | U8CPU b = 0xFF - ((rgb >> 0) & 0xFF); |
bungeman | 3b4b66c | 2015-01-08 08:33:44 -0800 | [diff] [blame] | 1090 | U8CPU lum = sk_apply_lut_if<APPLY_PREBLEND>(SkComputeLuminance(r, g, b), table8); |
| 1091 | #if SK_SHOW_TEXT_BLIT_COVERAGE |
| 1092 | lum = SkTMax(lum, (U8CPU)0x30); |
| 1093 | #endif |
| 1094 | return lum; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1095 | } |
| 1096 | template<bool APPLY_PREBLEND> |
| 1097 | static void rgb_to_a8(const CGRGBPixel* SK_RESTRICT cgPixels, size_t cgRowBytes, |
| 1098 | const SkGlyph& glyph, const uint8_t* table8) { |
| 1099 | const int width = glyph.fWidth; |
| 1100 | size_t dstRB = glyph.rowBytes(); |
| 1101 | uint8_t* SK_RESTRICT dst = (uint8_t*)glyph.fImage; |
| 1102 | |
| 1103 | for (int y = 0; y < glyph.fHeight; y++) { |
| 1104 | for (int i = 0; i < width; ++i) { |
| 1105 | dst[i] = rgb_to_a8<APPLY_PREBLEND>(cgPixels[i], table8); |
| 1106 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1107 | cgPixels = SkTAddOffset<const CGRGBPixel>(cgPixels, cgRowBytes); |
| 1108 | dst = SkTAddOffset<uint8_t>(dst, dstRB); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | template<bool APPLY_PREBLEND> |
| 1113 | static inline uint16_t rgb_to_lcd16(CGRGBPixel rgb, const uint8_t* tableR, |
| 1114 | const uint8_t* tableG, |
| 1115 | const uint8_t* tableB) { |
bungeman | e280d06 | 2016-03-24 11:27:05 -0700 | [diff] [blame] | 1116 | U8CPU r = sk_apply_lut_if<APPLY_PREBLEND>(0xFF - ((rgb >> 16) & 0xFF), tableR); |
| 1117 | U8CPU g = sk_apply_lut_if<APPLY_PREBLEND>(0xFF - ((rgb >> 8) & 0xFF), tableG); |
| 1118 | U8CPU b = sk_apply_lut_if<APPLY_PREBLEND>(0xFF - ((rgb >> 0) & 0xFF), tableB); |
bungeman | 3b4b66c | 2015-01-08 08:33:44 -0800 | [diff] [blame] | 1119 | #if SK_SHOW_TEXT_BLIT_COVERAGE |
| 1120 | r = SkTMax(r, (U8CPU)0x30); |
| 1121 | g = SkTMax(g, (U8CPU)0x30); |
| 1122 | b = SkTMax(b, (U8CPU)0x30); |
| 1123 | #endif |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1124 | return SkPack888ToRGB16(r, g, b); |
| 1125 | } |
| 1126 | template<bool APPLY_PREBLEND> |
| 1127 | static void rgb_to_lcd16(const CGRGBPixel* SK_RESTRICT cgPixels, size_t cgRowBytes, const SkGlyph& glyph, |
| 1128 | const uint8_t* tableR, const uint8_t* tableG, const uint8_t* tableB) { |
| 1129 | const int width = glyph.fWidth; |
| 1130 | size_t dstRB = glyph.rowBytes(); |
| 1131 | uint16_t* SK_RESTRICT dst = (uint16_t*)glyph.fImage; |
| 1132 | |
| 1133 | for (int y = 0; y < glyph.fHeight; y++) { |
| 1134 | for (int i = 0; i < width; i++) { |
| 1135 | dst[i] = rgb_to_lcd16<APPLY_PREBLEND>(cgPixels[i], tableR, tableG, tableB); |
| 1136 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1137 | cgPixels = SkTAddOffset<const CGRGBPixel>(cgPixels, cgRowBytes); |
| 1138 | dst = SkTAddOffset<uint16_t>(dst, dstRB); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1139 | } |
| 1140 | } |
| 1141 | |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 1142 | static SkPMColor cgpixels_to_pmcolor(CGRGBPixel rgb) { |
| 1143 | U8CPU a = (rgb >> 24) & 0xFF; |
reed@google.com | f77b35d | 2013-05-02 20:39:44 +0000 | [diff] [blame] | 1144 | U8CPU r = (rgb >> 16) & 0xFF; |
| 1145 | U8CPU g = (rgb >> 8) & 0xFF; |
| 1146 | U8CPU b = (rgb >> 0) & 0xFF; |
bungeman | 3b4b66c | 2015-01-08 08:33:44 -0800 | [diff] [blame] | 1147 | #if SK_SHOW_TEXT_BLIT_COVERAGE |
| 1148 | a = SkTMax(a, (U8CPU)0x30); |
| 1149 | #endif |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 1150 | return SkPackARGB32(a, r, g, b); |
reed@google.com | f77b35d | 2013-05-02 20:39:44 +0000 | [diff] [blame] | 1151 | } |
reed@google.com | f77b35d | 2013-05-02 20:39:44 +0000 | [diff] [blame] | 1152 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1153 | void SkScalerContext_Mac::generateImage(const SkGlyph& glyph) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1154 | CGGlyph cgGlyph = SkTo<CGGlyph>(glyph.getGlyphID()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1155 | |
| 1156 | // FIXME: lcd smoothed un-hinted rasterization unsupported. |
| 1157 | bool generateA8FromLCD = fRec.getHinting() != SkPaint::kNo_Hinting; |
| 1158 | |
| 1159 | // Draw the glyph |
| 1160 | size_t cgRowBytes; |
| 1161 | CGRGBPixel* cgPixels = fOffscreen.getCG(*this, glyph, cgGlyph, &cgRowBytes, generateA8FromLCD); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1162 | if (cgPixels == nullptr) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1163 | return; |
| 1164 | } |
| 1165 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1166 | // Fix the glyph |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1167 | if ((glyph.fMaskFormat == SkMask::kLCD16_Format) || |
| 1168 | (glyph.fMaskFormat == SkMask::kA8_Format && supports_LCD() && generateA8FromLCD)) |
| 1169 | { |
Ben Wagner | 7a0248f | 2017-10-18 11:30:56 -0400 | [diff] [blame] | 1170 | const uint8_t* linear = gLinearCoverageFromCGLCDValue.data(); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1171 | |
| 1172 | //Note that the following cannot really be integrated into the |
| 1173 | //pre-blend, since we may not be applying the pre-blend; when we aren't |
| 1174 | //applying the pre-blend it means that a filter wants linear anyway. |
| 1175 | //Other code may also be applying the pre-blend, so we'd need another |
| 1176 | //one with this and one without. |
| 1177 | CGRGBPixel* addr = cgPixels; |
| 1178 | for (int y = 0; y < glyph.fHeight; ++y) { |
| 1179 | for (int x = 0; x < glyph.fWidth; ++x) { |
| 1180 | int r = (addr[x] >> 16) & 0xFF; |
| 1181 | int g = (addr[x] >> 8) & 0xFF; |
| 1182 | int b = (addr[x] >> 0) & 0xFF; |
Ben Wagner | 7a0248f | 2017-10-18 11:30:56 -0400 | [diff] [blame] | 1183 | addr[x] = (linear[r] << 16) | (linear[g] << 8) | linear[b]; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1184 | } |
bungeman | e280d06 | 2016-03-24 11:27:05 -0700 | [diff] [blame] | 1185 | addr = SkTAddOffset<CGRGBPixel>(addr, cgRowBytes); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | // Convert glyph to mask |
| 1190 | switch (glyph.fMaskFormat) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1191 | case SkMask::kLCD16_Format: { |
| 1192 | if (fPreBlend.isApplicable()) { |
| 1193 | rgb_to_lcd16<true>(cgPixels, cgRowBytes, glyph, |
| 1194 | fPreBlend.fR, fPreBlend.fG, fPreBlend.fB); |
| 1195 | } else { |
| 1196 | rgb_to_lcd16<false>(cgPixels, cgRowBytes, glyph, |
| 1197 | fPreBlend.fR, fPreBlend.fG, fPreBlend.fB); |
| 1198 | } |
| 1199 | } break; |
| 1200 | case SkMask::kA8_Format: { |
| 1201 | if (fPreBlend.isApplicable()) { |
| 1202 | rgb_to_a8<true>(cgPixels, cgRowBytes, glyph, fPreBlend.fG); |
| 1203 | } else { |
| 1204 | rgb_to_a8<false>(cgPixels, cgRowBytes, glyph, fPreBlend.fG); |
| 1205 | } |
| 1206 | } break; |
| 1207 | case SkMask::kBW_Format: { |
| 1208 | const int width = glyph.fWidth; |
| 1209 | size_t dstRB = glyph.rowBytes(); |
| 1210 | uint8_t* dst = (uint8_t*)glyph.fImage; |
| 1211 | for (int y = 0; y < glyph.fHeight; y++) { |
| 1212 | cgpixels_to_bits(dst, cgPixels, width); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1213 | cgPixels = SkTAddOffset<CGRGBPixel>(cgPixels, cgRowBytes); |
| 1214 | dst = SkTAddOffset<uint8_t>(dst, dstRB); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1215 | } |
| 1216 | } break; |
reed@google.com | f77b35d | 2013-05-02 20:39:44 +0000 | [diff] [blame] | 1217 | case SkMask::kARGB32_Format: { |
| 1218 | const int width = glyph.fWidth; |
| 1219 | size_t dstRB = glyph.rowBytes(); |
| 1220 | SkPMColor* dst = (SkPMColor*)glyph.fImage; |
| 1221 | for (int y = 0; y < glyph.fHeight; y++) { |
| 1222 | for (int x = 0; x < width; ++x) { |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 1223 | dst[x] = cgpixels_to_pmcolor(cgPixels[x]); |
reed@google.com | f77b35d | 2013-05-02 20:39:44 +0000 | [diff] [blame] | 1224 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1225 | cgPixels = SkTAddOffset<CGRGBPixel>(cgPixels, cgRowBytes); |
| 1226 | dst = SkTAddOffset<SkPMColor>(dst, dstRB); |
reed@google.com | f77b35d | 2013-05-02 20:39:44 +0000 | [diff] [blame] | 1227 | } |
| 1228 | } break; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1229 | default: |
| 1230 | SkDEBUGFAIL("unexpected mask format"); |
| 1231 | break; |
| 1232 | } |
| 1233 | } |
| 1234 | |
| 1235 | /* |
| 1236 | * Our subpixel resolution is only 2 bits in each direction, so a scale of 4 |
| 1237 | * seems sufficient, and possibly even correct, to allow the hinted outline |
| 1238 | * to be subpixel positioned. |
| 1239 | */ |
| 1240 | #define kScaleForSubPixelPositionHinting (4.0f) |
| 1241 | |
Ben Wagner | 6e9ac12 | 2016-11-11 14:31:06 -0500 | [diff] [blame] | 1242 | void SkScalerContext_Mac::generatePath(SkGlyphID glyph, SkPath* path) { |
reed | d0f4173 | 2015-07-10 12:08:38 -0700 | [diff] [blame] | 1243 | AUTO_CG_LOCK(); |
| 1244 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1245 | SkScalar scaleX = SK_Scalar1; |
| 1246 | SkScalar scaleY = SK_Scalar1; |
| 1247 | |
bungeman | ef27ce3 | 2015-10-29 09:30:32 -0700 | [diff] [blame] | 1248 | CGAffineTransform xform = fTransform; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1249 | /* |
| 1250 | * For subpixel positioning, we want to return an unhinted outline, so it |
| 1251 | * can be positioned nicely at fractional offsets. However, we special-case |
| 1252 | * if the baseline of the (horizontal) text is axis-aligned. In those cases |
| 1253 | * we want to retain hinting in the direction orthogonal to the baseline. |
| 1254 | * e.g. for horizontal baseline, we want to retain hinting in Y. |
| 1255 | * The way we remove hinting is to scale the font by some value (4) in that |
| 1256 | * direction, ask for the path, and then scale the path back down. |
| 1257 | */ |
bungeman | 7cbeaae | 2015-09-22 09:54:56 -0700 | [diff] [blame] | 1258 | if (fDoSubPosition) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1259 | // start out by assuming that we want no hining in X and Y |
commit-bot@chromium.org | 4b413c8 | 2013-11-25 19:44:07 +0000 | [diff] [blame] | 1260 | scaleX = scaleY = kScaleForSubPixelPositionHinting; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1261 | // now see if we need to restore hinting for axis-aligned baselines |
bungeman | 27876bc | 2016-02-29 11:22:55 -0800 | [diff] [blame] | 1262 | switch (this->computeAxisAlignmentForHText()) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1263 | case kX_SkAxisAlignment: |
| 1264 | scaleY = SK_Scalar1; // want hinting in the Y direction |
| 1265 | break; |
| 1266 | case kY_SkAxisAlignment: |
| 1267 | scaleX = SK_Scalar1; // want hinting in the X direction |
| 1268 | break; |
| 1269 | default: |
| 1270 | break; |
| 1271 | } |
| 1272 | |
bungeman | ef27ce3 | 2015-10-29 09:30:32 -0700 | [diff] [blame] | 1273 | CGAffineTransform scale(CGAffineTransformMakeScale(ScalarToCG(scaleX), ScalarToCG(scaleY))); |
| 1274 | xform = CGAffineTransformConcat(fTransform, scale); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1275 | } |
| 1276 | |
Ben Wagner | 6e9ac12 | 2016-11-11 14:31:06 -0500 | [diff] [blame] | 1277 | CGGlyph cgGlyph = SkTo<CGGlyph>(glyph); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1278 | UniqueCFRef<CGPathRef> cgPath(CTFontCreatePathForGlyph(fCTFont.get(), cgGlyph, &xform)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1279 | |
| 1280 | path->reset(); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1281 | if (cgPath != nullptr) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1282 | CGPathApply(cgPath.get(), path, SkScalerContext_Mac::CTPathElement); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1283 | } |
| 1284 | |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1285 | if (fDoSubPosition) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1286 | SkMatrix m; |
| 1287 | m.setScale(SkScalarInvert(scaleX), SkScalarInvert(scaleY)); |
| 1288 | path->transform(m); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1289 | } |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1290 | if (fVertical) { |
bungeman@google.com | cefd981 | 2013-05-15 15:07:32 +0000 | [diff] [blame] | 1291 | SkPoint offset; |
| 1292 | getVerticalOffset(cgGlyph, &offset); |
| 1293 | path->offset(offset.fX, offset.fY); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1294 | } |
| 1295 | } |
| 1296 | |
bungeman | 4107806 | 2014-07-07 08:16:37 -0700 | [diff] [blame] | 1297 | void SkScalerContext_Mac::generateFontMetrics(SkPaint::FontMetrics* metrics) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1298 | if (nullptr == metrics) { |
bungeman | 4107806 | 2014-07-07 08:16:37 -0700 | [diff] [blame] | 1299 | return; |
| 1300 | } |
| 1301 | |
reed | d0f4173 | 2015-07-10 12:08:38 -0700 | [diff] [blame] | 1302 | AUTO_CG_LOCK(); |
| 1303 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1304 | CGRect theBounds = CTFontGetBoundingBox(fCTFont.get()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1305 | |
bungeman | 4107806 | 2014-07-07 08:16:37 -0700 | [diff] [blame] | 1306 | metrics->fTop = CGToScalar(-CGRectGetMaxY_inline(theBounds)); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1307 | metrics->fAscent = CGToScalar(-CTFontGetAscent(fCTFont.get())); |
| 1308 | metrics->fDescent = CGToScalar( CTFontGetDescent(fCTFont.get())); |
bungeman | 4107806 | 2014-07-07 08:16:37 -0700 | [diff] [blame] | 1309 | metrics->fBottom = CGToScalar(-CGRectGetMinY_inline(theBounds)); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1310 | metrics->fLeading = CGToScalar( CTFontGetLeading(fCTFont.get())); |
bungeman | 4107806 | 2014-07-07 08:16:37 -0700 | [diff] [blame] | 1311 | metrics->fAvgCharWidth = CGToScalar( CGRectGetWidth_inline(theBounds)); |
| 1312 | metrics->fXMin = CGToScalar( CGRectGetMinX_inline(theBounds)); |
| 1313 | metrics->fXMax = CGToScalar( CGRectGetMaxX_inline(theBounds)); |
bungeman | 6bd8d1c | 2015-06-09 08:40:51 -0700 | [diff] [blame] | 1314 | metrics->fMaxCharWidth = metrics->fXMax - metrics->fXMin; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1315 | metrics->fXHeight = CGToScalar( CTFontGetXHeight(fCTFont.get())); |
| 1316 | metrics->fCapHeight = CGToScalar( CTFontGetCapHeight(fCTFont.get())); |
| 1317 | metrics->fUnderlineThickness = CGToScalar( CTFontGetUnderlineThickness(fCTFont.get())); |
| 1318 | metrics->fUnderlinePosition = -CGToScalar( CTFontGetUnderlinePosition(fCTFont.get())); |
commit-bot@chromium.org | 0bc406d | 2014-03-01 20:12:26 +0000 | [diff] [blame] | 1319 | |
Ben Wagner | 219f362 | 2017-07-17 15:32:25 -0400 | [diff] [blame] | 1320 | metrics->fFlags = 0; |
Ben Wagner | 3318da5 | 2017-03-23 14:01:22 -0400 | [diff] [blame] | 1321 | metrics->fFlags |= SkPaint::FontMetrics::kUnderlineThicknessIsValid_Flag; |
bungeman | 4107806 | 2014-07-07 08:16:37 -0700 | [diff] [blame] | 1322 | metrics->fFlags |= SkPaint::FontMetrics::kUnderlinePositionIsValid_Flag; |
bungeman | 4ec46aa | 2017-02-15 17:49:12 -0500 | [diff] [blame] | 1323 | |
| 1324 | // See https://bugs.chromium.org/p/skia/issues/detail?id=6203 |
| 1325 | // At least on 10.12.3 with memory based fonts the x-height is always 0.6666 of the ascent and |
| 1326 | // the cap-height is always 0.8888 of the ascent. It appears that the values from the 'OS/2' |
| 1327 | // table are read, but then overwritten if the font is not a system font. As a result, if there |
| 1328 | // is a valid 'OS/2' table available use the values from the table if they aren't too strange. |
| 1329 | struct OS2HeightMetrics { |
| 1330 | SK_OT_SHORT sxHeight; |
| 1331 | SK_OT_SHORT sCapHeight; |
| 1332 | } heights; |
| 1333 | size_t bytesRead = this->getTypeface()->getTableData( |
| 1334 | SkTEndian_SwapBE32(SkOTTableOS2::TAG), offsetof(SkOTTableOS2, version.v2.sxHeight), |
| 1335 | sizeof(heights), &heights); |
| 1336 | if (bytesRead == sizeof(heights)) { |
| 1337 | // 'fontSize' is correct because the entire resolved size is set by the constructor. |
| 1338 | CGFloat fontSize = CTFontGetSize(this->fCTFont.get()); |
| 1339 | unsigned upem = CTFontGetUnitsPerEm(this->fCTFont.get()); |
| 1340 | unsigned maxSaneHeight = upem * 2; |
| 1341 | uint16_t xHeight = SkEndian_SwapBE16(heights.sxHeight); |
| 1342 | if (xHeight && xHeight < maxSaneHeight) { |
| 1343 | metrics->fXHeight = CGToScalar(xHeight * fontSize / upem); |
| 1344 | } |
| 1345 | uint16_t capHeight = SkEndian_SwapBE16(heights.sCapHeight); |
| 1346 | if (capHeight && capHeight < maxSaneHeight) { |
| 1347 | metrics->fCapHeight = CGToScalar(capHeight * fontSize / upem); |
| 1348 | } |
| 1349 | } |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1350 | } |
| 1351 | |
| 1352 | void SkScalerContext_Mac::CTPathElement(void *info, const CGPathElement *element) { |
| 1353 | SkPath* skPath = (SkPath*)info; |
| 1354 | |
| 1355 | // Process the path element |
| 1356 | switch (element->type) { |
| 1357 | case kCGPathElementMoveToPoint: |
| 1358 | skPath->moveTo(element->points[0].x, -element->points[0].y); |
| 1359 | break; |
| 1360 | |
| 1361 | case kCGPathElementAddLineToPoint: |
| 1362 | skPath->lineTo(element->points[0].x, -element->points[0].y); |
| 1363 | break; |
| 1364 | |
| 1365 | case kCGPathElementAddQuadCurveToPoint: |
| 1366 | skPath->quadTo(element->points[0].x, -element->points[0].y, |
| 1367 | element->points[1].x, -element->points[1].y); |
| 1368 | break; |
| 1369 | |
| 1370 | case kCGPathElementAddCurveToPoint: |
| 1371 | skPath->cubicTo(element->points[0].x, -element->points[0].y, |
| 1372 | element->points[1].x, -element->points[1].y, |
| 1373 | element->points[2].x, -element->points[2].y); |
| 1374 | break; |
| 1375 | |
| 1376 | case kCGPathElementCloseSubpath: |
| 1377 | skPath->close(); |
| 1378 | break; |
| 1379 | |
| 1380 | default: |
| 1381 | SkDEBUGFAIL("Unknown path element!"); |
| 1382 | break; |
| 1383 | } |
| 1384 | } |
| 1385 | |
| 1386 | |
| 1387 | /////////////////////////////////////////////////////////////////////////////// |
| 1388 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1389 | // Returns nullptr on failure |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1390 | // Call must still manage its ownership of provider |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 1391 | static sk_sp<SkTypeface> create_from_dataProvider(UniqueCFRef<CGDataProviderRef> provider, |
| 1392 | int ttcIndex) { |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 1393 | if (ttcIndex != 0) { |
| 1394 | return nullptr; |
| 1395 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1396 | UniqueCFRef<CGFontRef> cg(CGFontCreateWithDataProvider(provider.get())); |
| 1397 | if (!cg) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1398 | return nullptr; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1399 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1400 | UniqueCFRef<CTFontRef> ct(CTFontCreateWithGraphicsFont(cg.get(), 0, nullptr, nullptr)); |
| 1401 | if (!ct) { |
| 1402 | return nullptr; |
| 1403 | } |
| 1404 | return create_from_CTFontRef(std::move(ct), nullptr, true); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1405 | } |
| 1406 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1407 | // Web fonts added to the CTFont registry do not return their character set. |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1408 | // Iterate through the font in this case. The existing caller caches the result, |
| 1409 | // so the performance impact isn't too bad. |
| 1410 | static void populate_glyph_to_unicode_slow(CTFontRef ctFont, CFIndex glyphCount, |
| 1411 | SkTDArray<SkUnichar>* glyphToUnicode) { |
reed@google.com | 7fa2a65 | 2014-01-27 13:42:58 +0000 | [diff] [blame] | 1412 | glyphToUnicode->setCount(SkToInt(glyphCount)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1413 | SkUnichar* out = glyphToUnicode->begin(); |
| 1414 | sk_bzero(out, glyphCount * sizeof(SkUnichar)); |
| 1415 | UniChar unichar = 0; |
| 1416 | while (glyphCount > 0) { |
| 1417 | CGGlyph glyph; |
| 1418 | if (CTFontGetGlyphsForCharacters(ctFont, &unichar, &glyph, 1)) { |
Hal Canary | 266dcb0 | 2017-04-07 11:49:20 -0400 | [diff] [blame] | 1419 | if (out[glyph] != 0) { |
| 1420 | out[glyph] = unichar; |
| 1421 | --glyphCount; |
| 1422 | } |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1423 | } |
| 1424 | if (++unichar == 0) { |
| 1425 | break; |
| 1426 | } |
| 1427 | } |
| 1428 | } |
| 1429 | |
| 1430 | // Construct Glyph to Unicode table. |
| 1431 | // Unicode code points that require conjugate pairs in utf16 are not |
| 1432 | // supported. |
| 1433 | static void populate_glyph_to_unicode(CTFontRef ctFont, CFIndex glyphCount, |
| 1434 | SkTDArray<SkUnichar>* glyphToUnicode) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1435 | UniqueCFRef<CFCharacterSetRef> charSet(CTFontCopyCharacterSet(ctFont)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1436 | if (!charSet) { |
| 1437 | populate_glyph_to_unicode_slow(ctFont, glyphCount, glyphToUnicode); |
| 1438 | return; |
| 1439 | } |
| 1440 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1441 | UniqueCFRef<CFDataRef> bitmap(CFCharacterSetCreateBitmapRepresentation(nullptr, charSet.get())); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1442 | if (!bitmap) { |
| 1443 | return; |
| 1444 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1445 | CFIndex length = CFDataGetLength(bitmap.get()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1446 | if (!length) { |
| 1447 | return; |
| 1448 | } |
| 1449 | if (length > 8192) { |
| 1450 | // TODO: Add support for Unicode above 0xFFFF |
| 1451 | // Consider only the BMP portion of the Unicode character points. |
| 1452 | // The bitmap may contain other planes, up to plane 16. |
| 1453 | // See http://developer.apple.com/library/ios/#documentation/CoreFoundation/Reference/CFCharacterSetRef/Reference/reference.html |
| 1454 | length = 8192; |
| 1455 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1456 | const UInt8* bits = CFDataGetBytePtr(bitmap.get()); |
reed@google.com | 7fa2a65 | 2014-01-27 13:42:58 +0000 | [diff] [blame] | 1457 | glyphToUnicode->setCount(SkToInt(glyphCount)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1458 | SkUnichar* out = glyphToUnicode->begin(); |
| 1459 | sk_bzero(out, glyphCount * sizeof(SkUnichar)); |
| 1460 | for (int i = 0; i < length; i++) { |
| 1461 | int mask = bits[i]; |
| 1462 | if (!mask) { |
| 1463 | continue; |
| 1464 | } |
| 1465 | for (int j = 0; j < 8; j++) { |
| 1466 | CGGlyph glyph; |
| 1467 | UniChar unichar = static_cast<UniChar>((i << 3) + j); |
| 1468 | if (mask & (1 << j) && CTFontGetGlyphsForCharacters(ctFont, &unichar, &glyph, 1)) { |
| 1469 | out[glyph] = unichar; |
| 1470 | } |
| 1471 | } |
| 1472 | } |
| 1473 | } |
| 1474 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1475 | /** Assumes src and dst are not nullptr. */ |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1476 | static void CFStringToSkString(CFStringRef src, SkString* dst) { |
| 1477 | // Reserve enough room for the worst-case string, |
| 1478 | // plus 1 byte for the trailing null. |
| 1479 | CFIndex length = CFStringGetMaximumSizeForEncoding(CFStringGetLength(src), |
| 1480 | kCFStringEncodingUTF8) + 1; |
| 1481 | dst->resize(length); |
| 1482 | CFStringGetCString(src, dst->writable_str(), length, kCFStringEncodingUTF8); |
| 1483 | // Resize to the actual UTF-8 length used, stripping the null character. |
| 1484 | dst->resize(strlen(dst->c_str())); |
| 1485 | } |
| 1486 | |
Hal Canary | 209e4b1 | 2017-05-04 14:23:55 -0400 | [diff] [blame] | 1487 | std::unique_ptr<SkAdvancedTypefaceMetrics> SkTypeface_Mac::onGetAdvancedMetrics() const { |
reed@google.com | 2689f61 | 2013-03-20 20:01:47 +0000 | [diff] [blame] | 1488 | |
reed | d0f4173 | 2015-07-10 12:08:38 -0700 | [diff] [blame] | 1489 | AUTO_CG_LOCK(); |
| 1490 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1491 | UniqueCFRef<CTFontRef> ctFont = |
| 1492 | ctfont_create_exact_copy(fFontRef.get(), CTFontGetUnitsPerEm(fFontRef.get()), nullptr); |
bungeman | 7cbeaae | 2015-09-22 09:54:56 -0700 | [diff] [blame] | 1493 | |
Hal Canary | 209e4b1 | 2017-05-04 14:23:55 -0400 | [diff] [blame] | 1494 | std::unique_ptr<SkAdvancedTypefaceMetrics> info(new SkAdvancedTypefaceMetrics); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1495 | |
| 1496 | { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1497 | UniqueCFRef<CFStringRef> fontName(CTFontCopyPostScriptName(ctFont.get())); |
bungeman | 256b351 | 2014-07-02 07:57:59 -0700 | [diff] [blame] | 1498 | if (fontName.get()) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1499 | CFStringToSkString(fontName.get(), &info->fFontName); |
bungeman | 256b351 | 2014-07-02 07:57:59 -0700 | [diff] [blame] | 1500 | } |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1501 | } |
| 1502 | |
Ben Wagner | c663905 | 2017-03-02 13:31:16 -0500 | [diff] [blame] | 1503 | // In 10.10 and earlier, CTFontCopyVariationAxes and CTFontCopyVariation do not work when |
| 1504 | // applied to fonts which started life with CGFontCreateWithDataProvider (they simply always |
| 1505 | // return nullptr). As a result, we are limited to CGFontCopyVariationAxes and |
| 1506 | // CGFontCopyVariations here until support for 10.10 and earlier is removed. |
| 1507 | UniqueCFRef<CGFontRef> cgFont(CTFontCopyGraphicsFont(ctFont.get(), nullptr)); |
| 1508 | if (cgFont) { |
| 1509 | UniqueCFRef<CFArrayRef> cgAxes(CGFontCopyVariationAxes(cgFont.get())); |
| 1510 | if (cgAxes && CFArrayGetCount(cgAxes.get()) > 0) { |
| 1511 | info->fFlags |= SkAdvancedTypefaceMetrics::kMultiMaster_FontFlag; |
| 1512 | } |
| 1513 | } |
| 1514 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1515 | CFIndex glyphCount = CTFontGetGlyphCount(ctFont.get()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1516 | |
Hal Canary | 209e4b1 | 2017-05-04 14:23:55 -0400 | [diff] [blame] | 1517 | populate_glyph_to_unicode(ctFont.get(), glyphCount, &info->fGlyphToUnicode); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1518 | |
Hal Canary | 4a851ca | 2017-11-09 11:09:34 -0500 | [diff] [blame] | 1519 | SkOTTableOS2_V4::Type fsType; |
| 1520 | if (sizeof(fsType) == this->getTableData(SkTEndian_SwapBE32(SkOTTableOS2::TAG), |
| 1521 | offsetof(SkOTTableOS2_V4, fsType), |
| 1522 | sizeof(fsType), |
| 1523 | &fsType)) { |
Hal Canary | a865d25 | 2017-11-09 16:16:09 -0500 | [diff] [blame] | 1524 | SkOTUtils::SetAdvancedTypefaceFlags(fsType, info.get()); |
Hal Canary | 4a851ca | 2017-11-09 11:09:34 -0500 | [diff] [blame] | 1525 | } |
| 1526 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1527 | // If it's not a truetype font, mark it as 'other'. Assume that TrueType |
| 1528 | // fonts always have both glyf and loca tables. At the least, this is what |
| 1529 | // sfntly needs to subset the font. CTFontCopyAttribute() does not always |
| 1530 | // succeed in determining this directly. |
reed@google.com | 2689f61 | 2013-03-20 20:01:47 +0000 | [diff] [blame] | 1531 | if (!this->getTableSize('glyf') || !this->getTableSize('loca')) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1532 | return info; |
| 1533 | } |
| 1534 | |
| 1535 | info->fType = SkAdvancedTypefaceMetrics::kTrueType_Font; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1536 | CTFontSymbolicTraits symbolicTraits = CTFontGetSymbolicTraits(ctFont.get()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1537 | if (symbolicTraits & kCTFontMonoSpaceTrait) { |
| 1538 | info->fStyle |= SkAdvancedTypefaceMetrics::kFixedPitch_Style; |
| 1539 | } |
| 1540 | if (symbolicTraits & kCTFontItalicTrait) { |
| 1541 | info->fStyle |= SkAdvancedTypefaceMetrics::kItalic_Style; |
| 1542 | } |
| 1543 | CTFontStylisticClass stylisticClass = symbolicTraits & kCTFontClassMaskTrait; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1544 | if (stylisticClass >= kCTFontOldStyleSerifsClass && stylisticClass <= kCTFontSlabSerifsClass) { |
| 1545 | info->fStyle |= SkAdvancedTypefaceMetrics::kSerif_Style; |
| 1546 | } else if (stylisticClass & kCTFontScriptsClass) { |
| 1547 | info->fStyle |= SkAdvancedTypefaceMetrics::kScript_Style; |
| 1548 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1549 | info->fItalicAngle = (int16_t) CTFontGetSlantAngle(ctFont.get()); |
| 1550 | info->fAscent = (int16_t) CTFontGetAscent(ctFont.get()); |
| 1551 | info->fDescent = (int16_t) CTFontGetDescent(ctFont.get()); |
| 1552 | info->fCapHeight = (int16_t) CTFontGetCapHeight(ctFont.get()); |
| 1553 | CGRect bbox = CTFontGetBoundingBox(ctFont.get()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1554 | |
| 1555 | SkRect r; |
| 1556 | r.set( CGToScalar(CGRectGetMinX_inline(bbox)), // Left |
| 1557 | CGToScalar(CGRectGetMaxY_inline(bbox)), // Top |
| 1558 | CGToScalar(CGRectGetMaxX_inline(bbox)), // Right |
| 1559 | CGToScalar(CGRectGetMinY_inline(bbox))); // Bottom |
| 1560 | |
| 1561 | r.roundOut(&(info->fBBox)); |
| 1562 | |
| 1563 | // Figure out a good guess for StemV - Min width of i, I, !, 1. |
| 1564 | // This probably isn't very good with an italic font. |
| 1565 | int16_t min_width = SHRT_MAX; |
| 1566 | info->fStemV = 0; |
| 1567 | static const UniChar stem_chars[] = {'i', 'I', '!', '1'}; |
| 1568 | const size_t count = sizeof(stem_chars) / sizeof(stem_chars[0]); |
| 1569 | CGGlyph glyphs[count]; |
| 1570 | CGRect boundingRects[count]; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1571 | if (CTFontGetGlyphsForCharacters(ctFont.get(), stem_chars, glyphs, count)) { |
bungeman | 18ec7b9 | 2017-02-09 17:15:59 -0500 | [diff] [blame] | 1572 | CTFontGetBoundingRectsForGlyphs(ctFont.get(), kCTFontOrientationHorizontal, |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1573 | glyphs, boundingRects, count); |
| 1574 | for (size_t i = 0; i < count; i++) { |
| 1575 | int16_t width = (int16_t) boundingRects[i].size.width; |
| 1576 | if (width > 0 && width < min_width) { |
| 1577 | min_width = width; |
| 1578 | info->fStemV = min_width; |
| 1579 | } |
| 1580 | } |
| 1581 | } |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1582 | return info; |
| 1583 | } |
| 1584 | |
| 1585 | /////////////////////////////////////////////////////////////////////////////// |
| 1586 | |
reed@google.com | cc9aad5 | 2013-03-21 19:28:10 +0000 | [diff] [blame] | 1587 | static SK_SFNT_ULONG get_font_type_tag(const SkTypeface_Mac* typeface) { |
| 1588 | CTFontRef ctFont = typeface->fFontRef.get(); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1589 | UniqueCFRef<CFNumberRef> fontFormatRef( |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1590 | static_cast<CFNumberRef>(CTFontCopyAttribute(ctFont, kCTFontFormatAttribute))); |
| 1591 | if (!fontFormatRef) { |
| 1592 | return 0; |
| 1593 | } |
| 1594 | |
| 1595 | SInt32 fontFormatValue; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1596 | if (!CFNumberGetValue(fontFormatRef.get(), kCFNumberSInt32Type, &fontFormatValue)) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1597 | return 0; |
| 1598 | } |
| 1599 | |
| 1600 | switch (fontFormatValue) { |
| 1601 | case kCTFontFormatOpenTypePostScript: |
| 1602 | return SkSFNTHeader::fontType_OpenTypeCFF::TAG; |
| 1603 | case kCTFontFormatOpenTypeTrueType: |
| 1604 | return SkSFNTHeader::fontType_WindowsTrueType::TAG; |
| 1605 | case kCTFontFormatTrueType: |
| 1606 | return SkSFNTHeader::fontType_MacTrueType::TAG; |
| 1607 | case kCTFontFormatPostScript: |
| 1608 | return SkSFNTHeader::fontType_PostScript::TAG; |
| 1609 | case kCTFontFormatBitmap: |
| 1610 | return SkSFNTHeader::fontType_MacTrueType::TAG; |
| 1611 | case kCTFontFormatUnrecognized: |
| 1612 | default: |
| 1613 | //CT seems to be unreliable in being able to obtain the type, |
| 1614 | //even if all we want is the first four bytes of the font resource. |
| 1615 | //Just the presence of the FontForge 'FFTM' table seems to throw it off. |
| 1616 | return SkSFNTHeader::fontType_WindowsTrueType::TAG; |
| 1617 | } |
| 1618 | } |
| 1619 | |
bungeman | 5f213d9 | 2015-01-27 05:39:10 -0800 | [diff] [blame] | 1620 | SkStreamAsset* SkTypeface_Mac::onOpenStream(int* ttcIndex) const { |
reed@google.com | cc9aad5 | 2013-03-21 19:28:10 +0000 | [diff] [blame] | 1621 | SK_SFNT_ULONG fontType = get_font_type_tag(this); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1622 | if (0 == fontType) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1623 | return nullptr; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1624 | } |
| 1625 | |
| 1626 | // get table tags |
reed@google.com | cc9aad5 | 2013-03-21 19:28:10 +0000 | [diff] [blame] | 1627 | int numTables = this->countTables(); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1628 | SkTDArray<SkFontTableTag> tableTags; |
| 1629 | tableTags.setCount(numTables); |
reed@google.com | cc9aad5 | 2013-03-21 19:28:10 +0000 | [diff] [blame] | 1630 | this->getTableTags(tableTags.begin()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1631 | |
| 1632 | // calc total size for font, save sizes |
| 1633 | SkTDArray<size_t> tableSizes; |
| 1634 | size_t totalSize = sizeof(SkSFNTHeader) + sizeof(SkSFNTHeader::TableDirectoryEntry) * numTables; |
| 1635 | for (int tableIndex = 0; tableIndex < numTables; ++tableIndex) { |
reed@google.com | cc9aad5 | 2013-03-21 19:28:10 +0000 | [diff] [blame] | 1636 | size_t tableSize = this->getTableSize(tableTags[tableIndex]); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1637 | totalSize += (tableSize + 3) & ~3; |
| 1638 | *tableSizes.append() = tableSize; |
| 1639 | } |
| 1640 | |
| 1641 | // reserve memory for stream, and zero it (tables must be zero padded) |
| 1642 | SkMemoryStream* stream = new SkMemoryStream(totalSize); |
| 1643 | char* dataStart = (char*)stream->getMemoryBase(); |
| 1644 | sk_bzero(dataStart, totalSize); |
| 1645 | char* dataPtr = dataStart; |
| 1646 | |
| 1647 | // compute font header entries |
| 1648 | uint16_t entrySelector = 0; |
| 1649 | uint16_t searchRange = 1; |
| 1650 | while (searchRange < numTables >> 1) { |
| 1651 | entrySelector++; |
| 1652 | searchRange <<= 1; |
| 1653 | } |
| 1654 | searchRange <<= 4; |
| 1655 | uint16_t rangeShift = (numTables << 4) - searchRange; |
| 1656 | |
| 1657 | // write font header |
| 1658 | SkSFNTHeader* header = (SkSFNTHeader*)dataPtr; |
| 1659 | header->fontType = fontType; |
| 1660 | header->numTables = SkEndian_SwapBE16(numTables); |
| 1661 | header->searchRange = SkEndian_SwapBE16(searchRange); |
| 1662 | header->entrySelector = SkEndian_SwapBE16(entrySelector); |
| 1663 | header->rangeShift = SkEndian_SwapBE16(rangeShift); |
| 1664 | dataPtr += sizeof(SkSFNTHeader); |
| 1665 | |
| 1666 | // write tables |
| 1667 | SkSFNTHeader::TableDirectoryEntry* entry = (SkSFNTHeader::TableDirectoryEntry*)dataPtr; |
| 1668 | dataPtr += sizeof(SkSFNTHeader::TableDirectoryEntry) * numTables; |
| 1669 | for (int tableIndex = 0; tableIndex < numTables; ++tableIndex) { |
| 1670 | size_t tableSize = tableSizes[tableIndex]; |
reed@google.com | cc9aad5 | 2013-03-21 19:28:10 +0000 | [diff] [blame] | 1671 | this->getTableData(tableTags[tableIndex], 0, tableSize, dataPtr); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1672 | entry->tag = SkEndian_SwapBE32(tableTags[tableIndex]); |
| 1673 | entry->checksum = SkEndian_SwapBE32(SkOTUtils::CalcTableChecksum((SK_OT_ULONG*)dataPtr, |
| 1674 | tableSize)); |
reed@google.com | 7fa2a65 | 2014-01-27 13:42:58 +0000 | [diff] [blame] | 1675 | entry->offset = SkEndian_SwapBE32(SkToU32(dataPtr - dataStart)); |
| 1676 | entry->logicalLength = SkEndian_SwapBE32(SkToU32(tableSize)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1677 | |
| 1678 | dataPtr += (tableSize + 3) & ~3; |
| 1679 | ++entry; |
| 1680 | } |
| 1681 | |
bungeman | b3310c2 | 2015-03-02 09:05:36 -0800 | [diff] [blame] | 1682 | *ttcIndex = 0; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1683 | return stream; |
| 1684 | } |
| 1685 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1686 | struct NonDefaultAxesContext { |
| 1687 | SkFixed* axisValue; |
| 1688 | CFArrayRef cgAxes; |
| 1689 | }; |
| 1690 | static void set_non_default_axes(CFTypeRef key, CFTypeRef value, void* context) { |
| 1691 | NonDefaultAxesContext* self = static_cast<NonDefaultAxesContext*>(context); |
| 1692 | |
| 1693 | if (CFGetTypeID(key) != CFStringGetTypeID() || CFGetTypeID(value) != CFNumberGetTypeID()) { |
| 1694 | return; |
| 1695 | } |
| 1696 | |
| 1697 | // The key is a CFString which is a string from the 'name' table. |
| 1698 | // Search the cgAxes for an axis with this name, and use its index to store the value. |
| 1699 | CFIndex keyIndex = -1; |
| 1700 | CFStringRef keyString = static_cast<CFStringRef>(key); |
| 1701 | for (CFIndex i = 0; i < CFArrayGetCount(self->cgAxes); ++i) { |
| 1702 | CFTypeRef cgAxis = CFArrayGetValueAtIndex(self->cgAxes, i); |
| 1703 | if (CFGetTypeID(cgAxis) != CFDictionaryGetTypeID()) { |
| 1704 | continue; |
| 1705 | } |
| 1706 | |
| 1707 | CFDictionaryRef cgAxisDict = static_cast<CFDictionaryRef>(cgAxis); |
| 1708 | CFTypeRef cgAxisName = CFDictionaryGetValue(cgAxisDict, kCGFontVariationAxisName); |
| 1709 | if (!cgAxisName || CFGetTypeID(cgAxisName) != CFStringGetTypeID()) { |
| 1710 | continue; |
| 1711 | } |
| 1712 | CFStringRef cgAxisNameString = static_cast<CFStringRef>(cgAxisName); |
| 1713 | if (CFStringCompare(keyString, cgAxisNameString, 0) == kCFCompareEqualTo) { |
| 1714 | keyIndex = i; |
| 1715 | break; |
| 1716 | } |
| 1717 | } |
| 1718 | if (keyIndex == -1) { |
| 1719 | return; |
| 1720 | } |
| 1721 | |
| 1722 | CFNumberRef valueNumber = static_cast<CFNumberRef>(value); |
| 1723 | double valueDouble; |
| 1724 | if (!CFNumberGetValue(valueNumber, kCFNumberDoubleType, &valueDouble) || |
| 1725 | valueDouble < SkFixedToDouble(SK_FixedMin) || SkFixedToDouble(SK_FixedMax) < valueDouble) |
| 1726 | { |
| 1727 | return; |
| 1728 | } |
| 1729 | self->axisValue[keyIndex] = SkDoubleToFixed(valueDouble); |
| 1730 | } |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 1731 | static bool get_variations(CTFontRef ctFont, CFIndex* cgAxisCount, |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1732 | SkAutoSTMalloc<4, SkFixed>* axisValues) |
| 1733 | { |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 1734 | // In 10.10 and earlier, CTFontCopyVariationAxes and CTFontCopyVariation do not work when |
| 1735 | // applied to fonts which started life with CGFontCreateWithDataProvider (they simply always |
| 1736 | // return nullptr). As a result, we are limited to CGFontCopyVariationAxes and |
| 1737 | // CGFontCopyVariations here until support for 10.10 and earlier is removed. |
| 1738 | UniqueCFRef<CGFontRef> cgFont(CTFontCopyGraphicsFont(ctFont, nullptr)); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1739 | if (!cgFont) { |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1740 | return false; |
| 1741 | } |
| 1742 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1743 | UniqueCFRef<CFDictionaryRef> cgVariations(CGFontCopyVariations(cgFont.get())); |
| 1744 | // If a font has no variations CGFontCopyVariations returns nullptr (instead of an empty dict). |
| 1745 | if (!cgVariations) { |
| 1746 | return false; |
| 1747 | } |
| 1748 | |
| 1749 | UniqueCFRef<CFArrayRef> cgAxes(CGFontCopyVariationAxes(cgFont.get())); |
| 1750 | if (!cgAxes) { |
| 1751 | return false; |
| 1752 | } |
| 1753 | *cgAxisCount = CFArrayGetCount(cgAxes.get()); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1754 | axisValues->reset(*cgAxisCount); |
| 1755 | |
| 1756 | // Set all of the axes to their default values. |
| 1757 | // Fail if any default value cannot be determined. |
| 1758 | for (CFIndex i = 0; i < *cgAxisCount; ++i) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1759 | CFTypeRef cgAxis = CFArrayGetValueAtIndex(cgAxes.get(), i); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1760 | if (CFGetTypeID(cgAxis) != CFDictionaryGetTypeID()) { |
| 1761 | return false; |
| 1762 | } |
| 1763 | |
| 1764 | CFDictionaryRef cgAxisDict = static_cast<CFDictionaryRef>(cgAxis); |
| 1765 | CFTypeRef axisDefaultValue = CFDictionaryGetValue(cgAxisDict, |
| 1766 | kCGFontVariationAxisDefaultValue); |
| 1767 | if (!axisDefaultValue || CFGetTypeID(axisDefaultValue) != CFNumberGetTypeID()) { |
| 1768 | return false; |
| 1769 | } |
| 1770 | CFNumberRef axisDefaultValueNumber = static_cast<CFNumberRef>(axisDefaultValue); |
| 1771 | double axisDefaultValueDouble; |
| 1772 | if (!CFNumberGetValue(axisDefaultValueNumber, kCFNumberDoubleType, &axisDefaultValueDouble)) |
| 1773 | { |
| 1774 | return false; |
| 1775 | } |
| 1776 | if (axisDefaultValueDouble < SkFixedToDouble(SK_FixedMin) || |
| 1777 | SkFixedToDouble(SK_FixedMax) < axisDefaultValueDouble) |
| 1778 | { |
| 1779 | return false; |
| 1780 | } |
| 1781 | (*axisValues)[(int)i] = SkDoubleToFixed(axisDefaultValueDouble); |
| 1782 | } |
| 1783 | |
| 1784 | // Override the default values with the given font's stated axis values. |
| 1785 | NonDefaultAxesContext c = { axisValues->get(), cgAxes.get() }; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1786 | CFDictionaryApplyFunction(cgVariations.get(), set_non_default_axes, &c); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1787 | |
| 1788 | return true; |
| 1789 | } |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame] | 1790 | std::unique_ptr<SkFontData> SkTypeface_Mac::onMakeFontData() const { |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1791 | int index; |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame] | 1792 | std::unique_ptr<SkStreamAsset> stream(this->onOpenStream(&index)); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1793 | |
| 1794 | CFIndex cgAxisCount; |
| 1795 | SkAutoSTMalloc<4, SkFixed> axisValues; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1796 | if (get_variations(fFontRef.get(), &cgAxisCount, &axisValues)) { |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame] | 1797 | return skstd::make_unique<SkFontData>(std::move(stream), index, |
| 1798 | axisValues.get(), cgAxisCount); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1799 | } |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame] | 1800 | return skstd::make_unique<SkFontData>(std::move(stream), index, nullptr, 0); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 1801 | } |
| 1802 | |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 1803 | /** Creates a CT variation dictionary {tag, value} from a CG variation dictionary {name, value}. */ |
| 1804 | static UniqueCFRef<CFDictionaryRef> ct_variation_from_cg_variation(CFDictionaryRef cgVariations, |
| 1805 | CFArrayRef ctAxes) { |
| 1806 | |
| 1807 | UniqueCFRef<CFMutableDictionaryRef> ctVariations( |
| 1808 | CFDictionaryCreateMutable(kCFAllocatorDefault, 0, |
| 1809 | &kCFTypeDictionaryKeyCallBacks, |
| 1810 | &kCFTypeDictionaryValueCallBacks)); |
| 1811 | |
| 1812 | CFIndex axisCount = CFArrayGetCount(ctAxes); |
| 1813 | for (CFIndex i = 0; i < axisCount; ++i) { |
| 1814 | CFTypeRef axisInfo = CFArrayGetValueAtIndex(ctAxes, i); |
| 1815 | if (CFDictionaryGetTypeID() != CFGetTypeID(axisInfo)) { |
| 1816 | return nullptr; |
| 1817 | } |
| 1818 | CFDictionaryRef axisInfoDict = static_cast<CFDictionaryRef>(axisInfo); |
| 1819 | |
| 1820 | // The assumption is that values produced by kCTFontVariationAxisNameKey and |
| 1821 | // kCGFontVariationAxisName will always be equal. |
| 1822 | CFTypeRef axisName = CFDictionaryGetValue(axisInfoDict, kCTFontVariationAxisNameKey); |
| 1823 | if (!axisName || CFGetTypeID(axisName) != CFStringGetTypeID()) { |
| 1824 | return nullptr; |
| 1825 | } |
| 1826 | |
| 1827 | CFTypeRef axisValue = CFDictionaryGetValue(cgVariations, axisName); |
| 1828 | if (!axisValue || CFGetTypeID(axisValue) != CFNumberGetTypeID()) { |
| 1829 | return nullptr; |
| 1830 | } |
| 1831 | |
| 1832 | CFTypeRef axisTag = CFDictionaryGetValue(axisInfoDict, kCTFontVariationAxisIdentifierKey); |
| 1833 | if (!axisTag || CFGetTypeID(axisTag) != CFNumberGetTypeID()) { |
| 1834 | return nullptr; |
| 1835 | } |
| 1836 | |
| 1837 | CFDictionaryAddValue(ctVariations.get(), axisTag, axisValue); |
| 1838 | } |
| 1839 | return std::move(ctVariations); |
| 1840 | } |
| 1841 | |
| 1842 | int SkTypeface_Mac::onGetVariationDesignPosition( |
| 1843 | SkFontArguments::VariationPosition::Coordinate coordinates[], int coordinateCount) const |
| 1844 | { |
| 1845 | // The CGFont variation data does not contain the tag. |
| 1846 | |
bungeman | bc096bf | 2017-04-25 13:32:50 -0400 | [diff] [blame] | 1847 | // CTFontCopyVariationAxes returns nullptr for CGFontCreateWithDataProvider fonts with |
| 1848 | // macOS 10.10 and iOS 9 or earlier. When this happens, there is no API to provide the tag. |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 1849 | UniqueCFRef<CFArrayRef> ctAxes(CTFontCopyVariationAxes(fFontRef.get())); |
| 1850 | if (!ctAxes) { |
| 1851 | return -1; |
| 1852 | } |
| 1853 | CFIndex axisCount = CFArrayGetCount(ctAxes.get()); |
| 1854 | if (!coordinates || coordinateCount < axisCount) { |
| 1855 | return axisCount; |
| 1856 | } |
| 1857 | |
| 1858 | // This call always returns nullptr on 10.11 and under for CGFontCreateWithDataProvider fonts. |
| 1859 | // When this happens, try converting the CG variation to a CT variation. |
| 1860 | // On 10.12 and later, this only returns non-default variations. |
| 1861 | UniqueCFRef<CFDictionaryRef> ctVariations(CTFontCopyVariation(fFontRef.get())); |
| 1862 | if (!ctVariations) { |
| 1863 | // When 10.11 and earlier are no longer supported, the following code can be replaced with |
| 1864 | // return -1 and ct_variation_from_cg_variation can be removed. |
| 1865 | UniqueCFRef<CGFontRef> cgFont(CTFontCopyGraphicsFont(fFontRef.get(), nullptr)); |
| 1866 | if (!cgFont) { |
| 1867 | return -1; |
| 1868 | } |
| 1869 | UniqueCFRef<CFDictionaryRef> cgVariations(CGFontCopyVariations(cgFont.get())); |
| 1870 | if (!cgVariations) { |
| 1871 | return -1; |
| 1872 | } |
| 1873 | ctVariations = ct_variation_from_cg_variation(cgVariations.get(), ctAxes.get()); |
| 1874 | if (!ctVariations) { |
| 1875 | return -1; |
| 1876 | } |
| 1877 | } |
| 1878 | |
| 1879 | for (int i = 0; i < axisCount; ++i) { |
| 1880 | CFTypeRef axisInfo = CFArrayGetValueAtIndex(ctAxes.get(), i); |
| 1881 | if (CFDictionaryGetTypeID() != CFGetTypeID(axisInfo)) { |
| 1882 | return -1; |
| 1883 | } |
| 1884 | CFDictionaryRef axisInfoDict = static_cast<CFDictionaryRef>(axisInfo); |
| 1885 | |
| 1886 | CFTypeRef tag = CFDictionaryGetValue(axisInfoDict, kCTFontVariationAxisIdentifierKey); |
| 1887 | if (!tag || CFGetTypeID(tag) != CFNumberGetTypeID()) { |
| 1888 | return -1; |
| 1889 | } |
| 1890 | CFNumberRef tagNumber = static_cast<CFNumberRef>(tag); |
| 1891 | int64_t tagLong; |
| 1892 | if (!CFNumberGetValue(tagNumber, kCFNumberSInt64Type, &tagLong)) { |
| 1893 | return -1; |
| 1894 | } |
| 1895 | coordinates[i].axis = tagLong; |
| 1896 | |
| 1897 | CGFloat variationCGFloat; |
| 1898 | CFTypeRef variationValue = CFDictionaryGetValue(ctVariations.get(), tagNumber); |
| 1899 | if (variationValue) { |
| 1900 | if (CFGetTypeID(variationValue) != CFNumberGetTypeID()) { |
| 1901 | return -1; |
| 1902 | } |
| 1903 | CFNumberRef variationNumber = static_cast<CFNumberRef>(variationValue); |
| 1904 | if (!CFNumberGetValue(variationNumber, kCFNumberCGFloatType, &variationCGFloat)) { |
| 1905 | return -1; |
| 1906 | } |
| 1907 | } else { |
| 1908 | CFTypeRef def = CFDictionaryGetValue(axisInfoDict, kCTFontVariationAxisDefaultValueKey); |
| 1909 | if (!def || CFGetTypeID(def) != CFNumberGetTypeID()) { |
| 1910 | return -1; |
| 1911 | } |
| 1912 | CFNumberRef defNumber = static_cast<CFNumberRef>(def); |
| 1913 | if (!CFNumberGetValue(defNumber, kCFNumberCGFloatType, &variationCGFloat)) { |
| 1914 | return -1; |
| 1915 | } |
| 1916 | } |
| 1917 | coordinates[i].value = CGToScalar(variationCGFloat); |
| 1918 | |
| 1919 | } |
| 1920 | return axisCount; |
| 1921 | } |
| 1922 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1923 | /////////////////////////////////////////////////////////////////////////////// |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1924 | /////////////////////////////////////////////////////////////////////////////// |
| 1925 | |
| 1926 | int SkTypeface_Mac::onGetUPEM() const { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1927 | UniqueCFRef<CGFontRef> cgFont(CTFontCopyGraphicsFont(fFontRef.get(), nullptr)); |
| 1928 | return CGFontGetUnitsPerEm(cgFont.get()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1929 | } |
| 1930 | |
bungeman@google.com | 839702b | 2013-08-07 17:09:22 +0000 | [diff] [blame] | 1931 | SkTypeface::LocalizedStrings* SkTypeface_Mac::onCreateFamilyNameIterator() const { |
bungeman@google.com | a980269 | 2013-08-07 02:45:25 +0000 | [diff] [blame] | 1932 | SkTypeface::LocalizedStrings* nameIter = |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1933 | SkOTUtils::LocalizedStrings_NameTable::CreateForFamilyNames(*this); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1934 | if (nullptr == nameIter) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1935 | CFStringRef cfLanguageRaw; |
| 1936 | UniqueCFRef<CFStringRef> cfFamilyName( |
| 1937 | CTFontCopyLocalizedName(fFontRef.get(), kCTFontFamilyNameKey, &cfLanguageRaw)); |
| 1938 | UniqueCFRef<CFStringRef> cfLanguage(cfLanguageRaw); |
bungeman@google.com | a980269 | 2013-08-07 02:45:25 +0000 | [diff] [blame] | 1939 | |
| 1940 | SkString skLanguage; |
| 1941 | SkString skFamilyName; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1942 | if (cfLanguage) { |
bungeman@google.com | a980269 | 2013-08-07 02:45:25 +0000 | [diff] [blame] | 1943 | CFStringToSkString(cfLanguage.get(), &skLanguage); |
| 1944 | } else { |
| 1945 | skLanguage = "und"; //undetermined |
| 1946 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1947 | if (cfFamilyName) { |
bungeman@google.com | a980269 | 2013-08-07 02:45:25 +0000 | [diff] [blame] | 1948 | CFStringToSkString(cfFamilyName.get(), &skFamilyName); |
| 1949 | } |
| 1950 | |
| 1951 | nameIter = new SkOTUtils::LocalizedStrings_SingleName(skFamilyName, skLanguage); |
| 1952 | } |
| 1953 | return nameIter; |
| 1954 | } |
| 1955 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1956 | int SkTypeface_Mac::onGetTableTags(SkFontTableTag tags[]) const { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1957 | UniqueCFRef<CFArrayRef> cfArray( |
| 1958 | CTFontCopyAvailableTables(fFontRef.get(), kCTFontTableOptionNoOptions)); |
| 1959 | if (!cfArray) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1960 | return 0; |
| 1961 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1962 | int count = SkToInt(CFArrayGetCount(cfArray.get())); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1963 | if (tags) { |
| 1964 | for (int i = 0; i < count; ++i) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1965 | uintptr_t fontTag = reinterpret_cast<uintptr_t>( |
| 1966 | CFArrayGetValueAtIndex(cfArray.get(), i)); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1967 | tags[i] = static_cast<SkFontTableTag>(fontTag); |
| 1968 | } |
| 1969 | } |
| 1970 | return count; |
| 1971 | } |
| 1972 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1973 | // If, as is the case with web fonts, the CTFont data isn't available, |
| 1974 | // the CGFont data may work. While the CGFont may always provide the |
| 1975 | // right result, leave the CTFont code path to minimize disruption. |
| 1976 | static UniqueCFRef<CFDataRef> copy_table_from_font(CTFontRef ctFont, SkFontTableTag tag) { |
| 1977 | UniqueCFRef<CFDataRef> data(CTFontCopyTable(ctFont, (CTFontTableTag) tag, |
| 1978 | kCTFontTableOptionNoOptions)); |
| 1979 | if (!data) { |
| 1980 | UniqueCFRef<CGFontRef> cgFont(CTFontCopyGraphicsFont(ctFont, nullptr)); |
| 1981 | data.reset(CGFontCopyTableForTag(cgFont.get(), tag)); |
| 1982 | } |
| 1983 | return data; |
| 1984 | } |
| 1985 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1986 | size_t SkTypeface_Mac::onGetTableData(SkFontTableTag tag, size_t offset, |
| 1987 | size_t length, void* dstData) const { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1988 | UniqueCFRef<CFDataRef> srcData = copy_table_from_font(fFontRef.get(), tag); |
| 1989 | if (!srcData) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1990 | return 0; |
| 1991 | } |
| 1992 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 1993 | size_t srcSize = CFDataGetLength(srcData.get()); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 1994 | if (offset >= srcSize) { |
| 1995 | return 0; |
| 1996 | } |
| 1997 | if (length > srcSize - offset) { |
| 1998 | length = srcSize - offset; |
| 1999 | } |
| 2000 | if (dstData) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2001 | memcpy(dstData, CFDataGetBytePtr(srcData.get()) + offset, length); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2002 | } |
| 2003 | return length; |
| 2004 | } |
| 2005 | |
reed | a9322c2 | 2016-04-12 06:47:05 -0700 | [diff] [blame] | 2006 | SkScalerContext* SkTypeface_Mac::onCreateScalerContext(const SkScalerContextEffects& effects, |
| 2007 | const SkDescriptor* desc) const { |
bungeman | 7cfd46a | 2016-10-20 16:06:52 -0400 | [diff] [blame] | 2008 | return new SkScalerContext_Mac(sk_ref_sp(const_cast<SkTypeface_Mac*>(this)), effects, desc); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2009 | } |
| 2010 | |
| 2011 | void SkTypeface_Mac::onFilterRec(SkScalerContextRec* rec) const { |
commit-bot@chromium.org | c5fd461 | 2013-05-06 22:23:08 +0000 | [diff] [blame] | 2012 | if (rec->fFlags & SkScalerContext::kLCD_BGROrder_Flag || |
| 2013 | rec->fFlags & SkScalerContext::kLCD_Vertical_Flag) |
| 2014 | { |
| 2015 | rec->fMaskFormat = SkMask::kA8_Format; |
| 2016 | // Render the glyphs as close as possible to what was requested. |
| 2017 | // The above turns off subpixel rendering, but the user requested it. |
| 2018 | // Normal hinting will cause the A8 masks to be generated from CoreGraphics subpixel masks. |
| 2019 | // See comments below for more details. |
| 2020 | rec->setHinting(SkPaint::kNormal_Hinting); |
| 2021 | } |
skia.committer@gmail.com | e944de7 | 2013-05-07 07:01:03 +0000 | [diff] [blame] | 2022 | |
commit-bot@chromium.org | c5fd461 | 2013-05-06 22:23:08 +0000 | [diff] [blame] | 2023 | unsigned flagsWeDontSupport = SkScalerContext::kDevKernText_Flag | |
bungeman@google.com | f6f5687 | 2014-01-23 19:01:36 +0000 | [diff] [blame] | 2024 | SkScalerContext::kForceAutohinting_Flag | |
commit-bot@chromium.org | c5fd461 | 2013-05-06 22:23:08 +0000 | [diff] [blame] | 2025 | SkScalerContext::kLCD_BGROrder_Flag | |
| 2026 | SkScalerContext::kLCD_Vertical_Flag; |
skia.committer@gmail.com | 0c23faf | 2013-03-03 07:16:29 +0000 | [diff] [blame] | 2027 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2028 | rec->fFlags &= ~flagsWeDontSupport; |
skia.committer@gmail.com | 0c23faf | 2013-03-03 07:16:29 +0000 | [diff] [blame] | 2029 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2030 | bool lcdSupport = supports_LCD(); |
skia.committer@gmail.com | 0c23faf | 2013-03-03 07:16:29 +0000 | [diff] [blame] | 2031 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2032 | // Only two levels of hinting are supported. |
| 2033 | // kNo_Hinting means avoid CoreGraphics outline dilation. |
| 2034 | // kNormal_Hinting means CoreGraphics outline dilation is allowed. |
| 2035 | // If there is no lcd support, hinting (dilation) cannot be supported. |
| 2036 | SkPaint::Hinting hinting = rec->getHinting(); |
| 2037 | if (SkPaint::kSlight_Hinting == hinting || !lcdSupport) { |
| 2038 | hinting = SkPaint::kNo_Hinting; |
| 2039 | } else if (SkPaint::kFull_Hinting == hinting) { |
| 2040 | hinting = SkPaint::kNormal_Hinting; |
| 2041 | } |
| 2042 | rec->setHinting(hinting); |
skia.committer@gmail.com | 0c23faf | 2013-03-03 07:16:29 +0000 | [diff] [blame] | 2043 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2044 | // FIXME: lcd smoothed un-hinted rasterization unsupported. |
| 2045 | // Tracked by http://code.google.com/p/skia/issues/detail?id=915 . |
| 2046 | // There is no current means to honor a request for unhinted lcd, |
| 2047 | // so arbitrarilly ignore the hinting request and honor lcd. |
skia.committer@gmail.com | 0c23faf | 2013-03-03 07:16:29 +0000 | [diff] [blame] | 2048 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2049 | // Hinting and smoothing should be orthogonal, but currently they are not. |
| 2050 | // CoreGraphics has no API to influence hinting. However, its lcd smoothed |
| 2051 | // output is drawn from auto-dilated outlines (the amount of which is |
| 2052 | // determined by AppleFontSmoothing). Its regular anti-aliased output is |
| 2053 | // drawn from un-dilated outlines. |
skia.committer@gmail.com | 0c23faf | 2013-03-03 07:16:29 +0000 | [diff] [blame] | 2054 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2055 | // The behavior of Skia is as follows: |
| 2056 | // [AA][no-hint]: generate AA using CoreGraphic's AA output. |
| 2057 | // [AA][yes-hint]: use CoreGraphic's LCD output and reduce it to a single |
| 2058 | // channel. This matches [LCD][yes-hint] in weight. |
| 2059 | // [LCD][no-hint]: curently unable to honor, and must pick which to respect. |
| 2060 | // Currenly side with LCD, effectively ignoring the hinting setting. |
| 2061 | // [LCD][yes-hint]: generate LCD using CoreGraphic's LCD output. |
skia.committer@gmail.com | 0c23faf | 2013-03-03 07:16:29 +0000 | [diff] [blame] | 2062 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2063 | if (rec->fMaskFormat == SkMask::kLCD16_Format) { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2064 | if (lcdSupport) { |
| 2065 | //CoreGraphics creates 555 masks for smoothed text anyway. |
| 2066 | rec->fMaskFormat = SkMask::kLCD16_Format; |
| 2067 | rec->setHinting(SkPaint::kNormal_Hinting); |
| 2068 | } else { |
| 2069 | rec->fMaskFormat = SkMask::kA8_Format; |
| 2070 | } |
| 2071 | } |
skia.committer@gmail.com | 0c23faf | 2013-03-03 07:16:29 +0000 | [diff] [blame] | 2072 | |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 2073 | // CoreText provides no information as to whether a glyph will be color or not. |
| 2074 | // Fonts may mix outlines and bitmaps, so information is needed on a glyph by glyph basis. |
| 2075 | // If a font contains an 'sbix' table, consider it to be a color font, and disable lcd. |
bungeman | 98c251b | 2015-02-23 14:24:04 -0800 | [diff] [blame] | 2076 | if (fHasColorGlyphs) { |
bungeman | 3490263 | 2014-12-10 21:43:27 -0800 | [diff] [blame] | 2077 | rec->fMaskFormat = SkMask::kARGB32_Format; |
| 2078 | } |
| 2079 | |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2080 | // Unhinted A8 masks (those not derived from LCD masks) must respect SK_GAMMA_APPLY_TO_A8. |
| 2081 | // All other masks can use regular gamma. |
| 2082 | if (SkMask::kA8_Format == rec->fMaskFormat && SkPaint::kNo_Hinting == hinting) { |
| 2083 | #ifndef SK_GAMMA_APPLY_TO_A8 |
brianosman | a1e8f8d | 2016-04-08 06:47:54 -0700 | [diff] [blame] | 2084 | // SRGBTODO: Is this correct? Do we want contrast boost? |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2085 | rec->ignorePreBlend(); |
reed@android.com | feda2f9 | 2010-05-19 13:47:05 +0000 | [diff] [blame] | 2086 | #endif |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2087 | } else { |
| 2088 | //CoreGraphics dialates smoothed text as needed. |
| 2089 | rec->setContrast(0); |
| 2090 | } |
| 2091 | } |
| 2092 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2093 | /** Takes ownership of the CFStringRef. */ |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2094 | static const char* get_str(CFStringRef ref, SkString* str) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2095 | if (nullptr == ref) { |
| 2096 | return nullptr; |
bungeman | 256b351 | 2014-07-02 07:57:59 -0700 | [diff] [blame] | 2097 | } |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2098 | CFStringToSkString(ref, str); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2099 | CFRelease(ref); |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2100 | return str->c_str(); |
| 2101 | } |
| 2102 | |
bungeman | b374d6a | 2014-09-17 07:48:59 -0700 | [diff] [blame] | 2103 | void SkTypeface_Mac::onGetFamilyName(SkString* familyName) const { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2104 | get_str(CTFontCopyFamilyName(fFontRef.get()), familyName); |
bungeman | b374d6a | 2014-09-17 07:48:59 -0700 | [diff] [blame] | 2105 | } |
| 2106 | |
reed@google.com | 5526ede | 2013-03-25 13:03:37 +0000 | [diff] [blame] | 2107 | void SkTypeface_Mac::onGetFontDescriptor(SkFontDescriptor* desc, |
| 2108 | bool* isLocalStream) const { |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2109 | SkString tmpStr; |
skia.committer@gmail.com | 0c23faf | 2013-03-03 07:16:29 +0000 | [diff] [blame] | 2110 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2111 | desc->setFamilyName(get_str(CTFontCopyFamilyName(fFontRef.get()), &tmpStr)); |
| 2112 | desc->setFullName(get_str(CTFontCopyFullName(fFontRef.get()), &tmpStr)); |
| 2113 | desc->setPostscriptName(get_str(CTFontCopyPostScriptName(fFontRef.get()), &tmpStr)); |
bungeman | b811378 | 2016-07-25 16:54:59 -0700 | [diff] [blame] | 2114 | desc->setStyle(this->fontStyle()); |
caseq | 26337e9 | 2014-06-30 12:14:52 -0700 | [diff] [blame] | 2115 | *isLocalStream = fIsLocalStream; |
mike@reedtribe.org | b103ed4 | 2013-03-03 03:50:09 +0000 | [diff] [blame] | 2116 | } |
reed@google.com | 5526ede | 2013-03-25 13:03:37 +0000 | [diff] [blame] | 2117 | |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2118 | int SkTypeface_Mac::onCharsToGlyphs(const void* chars, Encoding encoding, |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2119 | uint16_t glyphs[], int glyphCount) const |
| 2120 | { |
| 2121 | // Undocumented behavior of CTFontGetGlyphsForCharacters with non-bmp code points: |
| 2122 | // When a surrogate pair is detected, the glyph index used is the index of the high surrogate. |
| 2123 | // It is documented that if a mapping is unavailable, the glyph will be set to 0. |
skia.committer@gmail.com | 0673efe | 2013-10-26 07:01:53 +0000 | [diff] [blame] | 2124 | |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2125 | SkAutoSTMalloc<1024, UniChar> charStorage; |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2126 | const UniChar* src; // UniChar is a UTF-16 16-bit code unit. |
| 2127 | int srcCount; |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2128 | switch (encoding) { |
| 2129 | case kUTF8_Encoding: { |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2130 | const char* utf8 = reinterpret_cast<const char*>(chars); |
| 2131 | UniChar* utf16 = charStorage.reset(2 * glyphCount); |
| 2132 | src = utf16; |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2133 | for (int i = 0; i < glyphCount; ++i) { |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2134 | SkUnichar uni = SkUTF8_NextUnichar(&utf8); |
| 2135 | utf16 += SkUTF16_FromUnichar(uni, utf16); |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2136 | } |
reed@google.com | 7fa2a65 | 2014-01-27 13:42:58 +0000 | [diff] [blame] | 2137 | srcCount = SkToInt(utf16 - src); |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2138 | break; |
| 2139 | } |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2140 | case kUTF16_Encoding: { |
| 2141 | src = reinterpret_cast<const UniChar*>(chars); |
| 2142 | int extra = 0; |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2143 | for (int i = 0; i < glyphCount; ++i) { |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2144 | if (SkUTF16_IsHighSurrogate(src[i + extra])) { |
| 2145 | ++extra; |
| 2146 | } |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2147 | } |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2148 | srcCount = glyphCount + extra; |
| 2149 | break; |
| 2150 | } |
| 2151 | case kUTF32_Encoding: { |
| 2152 | const SkUnichar* utf32 = reinterpret_cast<const SkUnichar*>(chars); |
| 2153 | UniChar* utf16 = charStorage.reset(2 * glyphCount); |
| 2154 | src = utf16; |
| 2155 | for (int i = 0; i < glyphCount; ++i) { |
| 2156 | utf16 += SkUTF16_FromUnichar(utf32[i], utf16); |
| 2157 | } |
reed@google.com | 7fa2a65 | 2014-01-27 13:42:58 +0000 | [diff] [blame] | 2158 | srcCount = SkToInt(utf16 - src); |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2159 | break; |
| 2160 | } |
| 2161 | } |
| 2162 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2163 | // If glyphs is nullptr, CT still needs glyph storage for finding the first failure. |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2164 | // Also, if there are any non-bmp code points, the provided 'glyphs' storage will be inadequate. |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2165 | SkAutoSTMalloc<1024, uint16_t> glyphStorage; |
| 2166 | uint16_t* macGlyphs = glyphs; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2167 | if (nullptr == macGlyphs || srcCount > glyphCount) { |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2168 | macGlyphs = glyphStorage.reset(srcCount); |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2169 | } |
| 2170 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2171 | bool allEncoded = CTFontGetGlyphsForCharacters(fFontRef.get(), src, macGlyphs, srcCount); |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2172 | |
| 2173 | // If there were any non-bmp, then copy and compact. |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2174 | // If 'glyphs' is nullptr, then compact glyphStorage in-place. |
| 2175 | // If all are bmp and 'glyphs' is non-nullptr, 'glyphs' already contains the compact glyphs. |
| 2176 | // If some are non-bmp and 'glyphs' is non-nullptr, copy and compact into 'glyphs'. |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2177 | uint16_t* compactedGlyphs = glyphs; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2178 | if (nullptr == compactedGlyphs) { |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2179 | compactedGlyphs = macGlyphs; |
| 2180 | } |
| 2181 | if (srcCount > glyphCount) { |
| 2182 | int extra = 0; |
| 2183 | for (int i = 0; i < glyphCount; ++i) { |
bungeman | 7b09aab | 2014-09-24 11:04:41 -0700 | [diff] [blame] | 2184 | compactedGlyphs[i] = macGlyphs[i + extra]; |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2185 | if (SkUTF16_IsHighSurrogate(src[i + extra])) { |
| 2186 | ++extra; |
| 2187 | } |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2188 | } |
| 2189 | } |
| 2190 | |
| 2191 | if (allEncoded) { |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2192 | return glyphCount; |
| 2193 | } |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2194 | |
| 2195 | // If we got false, then we need to manually look for first failure. |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2196 | for (int i = 0; i < glyphCount; ++i) { |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2197 | if (0 == compactedGlyphs[i]) { |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2198 | return i; |
| 2199 | } |
| 2200 | } |
bungeman@google.com | 72b8cb2 | 2013-10-25 17:49:08 +0000 | [diff] [blame] | 2201 | // Odd to get here, as we expected CT to have returned true up front. |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2202 | return glyphCount; |
| 2203 | } |
| 2204 | |
| 2205 | int SkTypeface_Mac::onCountGlyphs() const { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2206 | return SkToInt(CTFontGetGlyphCount(fFontRef.get())); |
reed@google.com | bcb42ae | 2013-07-02 13:56:39 +0000 | [diff] [blame] | 2207 | } |
| 2208 | |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2209 | /////////////////////////////////////////////////////////////////////////////// |
| 2210 | /////////////////////////////////////////////////////////////////////////////// |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2211 | |
| 2212 | static bool find_desc_str(CTFontDescriptorRef desc, CFStringRef name, SkString* value) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2213 | UniqueCFRef<CFStringRef> ref((CFStringRef)CTFontDescriptorCopyAttribute(desc, name)); |
| 2214 | if (!ref) { |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2215 | return false; |
| 2216 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2217 | CFStringToSkString(ref.get(), value); |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2218 | return true; |
| 2219 | } |
| 2220 | |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2221 | #include "SkFontMgr.h" |
| 2222 | |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2223 | static inline int sqr(int value) { |
| 2224 | SkASSERT(SkAbs32(value) < 0x7FFF); // check for overflow |
| 2225 | return value * value; |
| 2226 | } |
| 2227 | |
| 2228 | // We normalize each axis (weight, width, italic) to be base-900 |
| 2229 | static int compute_metric(const SkFontStyle& a, const SkFontStyle& b) { |
| 2230 | return sqr(a.weight() - b.weight()) + |
| 2231 | sqr((a.width() - b.width()) * 100) + |
bungeman | b4bb7d8 | 2016-04-27 10:21:04 -0700 | [diff] [blame] | 2232 | sqr((a.slant() != b.slant()) * 900); |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2233 | } |
| 2234 | |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2235 | class SkFontStyleSet_Mac : public SkFontStyleSet { |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2236 | public: |
bungeman | 53d5c6e | 2016-04-08 07:22:29 -0700 | [diff] [blame] | 2237 | SkFontStyleSet_Mac(CTFontDescriptorRef desc) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2238 | : fArray(CTFontDescriptorCreateMatchingFontDescriptors(desc, nullptr)) |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2239 | , fCount(0) |
| 2240 | { |
| 2241 | if (!fArray) { |
| 2242 | fArray.reset(CFArrayCreate(nullptr, nullptr, 0, nullptr)); |
reed@google.com | dea7ee0 | 2013-03-28 14:12:10 +0000 | [diff] [blame] | 2243 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2244 | fCount = SkToInt(CFArrayGetCount(fArray.get())); |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2245 | } |
| 2246 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 2247 | int count() override { |
reed@google.com | dea7ee0 | 2013-03-28 14:12:10 +0000 | [diff] [blame] | 2248 | return fCount; |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2249 | } |
| 2250 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 2251 | void getStyle(int index, SkFontStyle* style, SkString* name) override { |
reed@google.com | dea7ee0 | 2013-03-28 14:12:10 +0000 | [diff] [blame] | 2252 | SkASSERT((unsigned)index < (unsigned)fCount); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2253 | CTFontDescriptorRef desc = (CTFontDescriptorRef)CFArrayGetValueAtIndex(fArray.get(), index); |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2254 | if (style) { |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 2255 | *style = fontstyle_from_descriptor(desc, false); |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2256 | } |
| 2257 | if (name) { |
| 2258 | if (!find_desc_str(desc, kCTFontStyleNameAttribute, name)) { |
| 2259 | name->reset(); |
| 2260 | } |
| 2261 | } |
| 2262 | } |
| 2263 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 2264 | SkTypeface* createTypeface(int index) override { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2265 | SkASSERT((unsigned)index < (unsigned)CFArrayGetCount(fArray.get())); |
| 2266 | CTFontDescriptorRef desc = (CTFontDescriptorRef)CFArrayGetValueAtIndex(fArray.get(), index); |
skia.committer@gmail.com | 37cbc7f | 2013-03-27 07:01:04 +0000 | [diff] [blame] | 2267 | |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2268 | return create_from_desc(desc).release(); |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2269 | } |
skia.committer@gmail.com | 37cbc7f | 2013-03-27 07:01:04 +0000 | [diff] [blame] | 2270 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 2271 | SkTypeface* matchStyle(const SkFontStyle& pattern) override { |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2272 | if (0 == fCount) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2273 | return nullptr; |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2274 | } |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2275 | return create_from_desc(findMatchingDesc(pattern)).release(); |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2276 | } |
| 2277 | |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2278 | private: |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2279 | UniqueCFRef<CFArrayRef> fArray; |
| 2280 | int fCount; |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2281 | |
| 2282 | CTFontDescriptorRef findMatchingDesc(const SkFontStyle& pattern) const { |
| 2283 | int bestMetric = SK_MaxS32; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2284 | CTFontDescriptorRef bestDesc = nullptr; |
skia.committer@gmail.com | d55846d | 2013-03-30 07:01:27 +0000 | [diff] [blame] | 2285 | |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2286 | for (int i = 0; i < fCount; ++i) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2287 | CTFontDescriptorRef desc = (CTFontDescriptorRef)CFArrayGetValueAtIndex(fArray.get(), i); |
bungeman | 2873c76 | 2017-01-13 11:40:21 -0500 | [diff] [blame] | 2288 | int metric = compute_metric(pattern, fontstyle_from_descriptor(desc, false)); |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2289 | if (0 == metric) { |
| 2290 | return desc; |
| 2291 | } |
| 2292 | if (metric < bestMetric) { |
| 2293 | bestMetric = metric; |
| 2294 | bestDesc = desc; |
| 2295 | } |
| 2296 | } |
| 2297 | SkASSERT(bestDesc); |
| 2298 | return bestDesc; |
| 2299 | } |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2300 | }; |
| 2301 | |
| 2302 | class SkFontMgr_Mac : public SkFontMgr { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2303 | UniqueCFRef<CFArrayRef> fNames; |
| 2304 | int fCount; |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2305 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2306 | CFStringRef getFamilyNameAt(int index) const { |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2307 | SkASSERT((unsigned)index < (unsigned)fCount); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2308 | return (CFStringRef)CFArrayGetValueAtIndex(fNames.get(), index); |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2309 | } |
| 2310 | |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2311 | static SkFontStyleSet* CreateSet(CFStringRef cfFamilyName) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2312 | UniqueCFRef<CFMutableDictionaryRef> cfAttr( |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2313 | CFDictionaryCreateMutable(kCFAllocatorDefault, 0, |
| 2314 | &kCFTypeDictionaryKeyCallBacks, |
| 2315 | &kCFTypeDictionaryValueCallBacks)); |
skia.committer@gmail.com | d55846d | 2013-03-30 07:01:27 +0000 | [diff] [blame] | 2316 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2317 | CFDictionaryAddValue(cfAttr.get(), kCTFontFamilyNameAttribute, cfFamilyName); |
skia.committer@gmail.com | d55846d | 2013-03-30 07:01:27 +0000 | [diff] [blame] | 2318 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2319 | UniqueCFRef<CTFontDescriptorRef> desc( |
| 2320 | CTFontDescriptorCreateWithAttributes(cfAttr.get())); |
| 2321 | return new SkFontStyleSet_Mac(desc.get()); |
| 2322 | } |
| 2323 | |
| 2324 | /** CTFontManagerCopyAvailableFontFamilyNames() is not always available, so we |
| 2325 | * provide a wrapper here that will return an empty array if need be. |
| 2326 | */ |
| 2327 | static UniqueCFRef<CFArrayRef> CopyAvailableFontFamilyNames() { |
| 2328 | #ifdef SK_BUILD_FOR_IOS |
| 2329 | return UniqueCFRef<CFArrayRef>(CFArrayCreate(nullptr, nullptr, 0, nullptr)); |
| 2330 | #else |
| 2331 | return UniqueCFRef<CFArrayRef>(CTFontManagerCopyAvailableFontFamilyNames()); |
| 2332 | #endif |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2333 | } |
skia.committer@gmail.com | d55846d | 2013-03-30 07:01:27 +0000 | [diff] [blame] | 2334 | |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2335 | public: |
commit-bot@chromium.org | 967dee3 | 2014-02-04 22:35:01 +0000 | [diff] [blame] | 2336 | SkFontMgr_Mac() |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2337 | : fNames(CopyAvailableFontFamilyNames()) |
| 2338 | , fCount(fNames ? SkToInt(CFArrayGetCount(fNames.get())) : 0) {} |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2339 | |
| 2340 | protected: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 2341 | int onCountFamilies() const override { |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2342 | return fCount; |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2343 | } |
| 2344 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 2345 | void onGetFamilyName(int index, SkString* familyName) const override { |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2346 | if ((unsigned)index < (unsigned)fCount) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2347 | CFStringToSkString(this->getFamilyNameAt(index), familyName); |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2348 | } else { |
| 2349 | familyName->reset(); |
| 2350 | } |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2351 | } |
| 2352 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 2353 | SkFontStyleSet* onCreateStyleSet(int index) const override { |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2354 | if ((unsigned)index >= (unsigned)fCount) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2355 | return nullptr; |
reed@google.com | 83787c5 | 2013-03-26 17:19:15 +0000 | [diff] [blame] | 2356 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2357 | return CreateSet(this->getFamilyNameAt(index)); |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2358 | } |
skia.committer@gmail.com | d55846d | 2013-03-30 07:01:27 +0000 | [diff] [blame] | 2359 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 2360 | SkFontStyleSet* onMatchFamily(const char familyName[]) const override { |
bungeman | 7575bb1 | 2017-05-01 13:02:42 -0400 | [diff] [blame] | 2361 | if (!familyName) { |
| 2362 | return nullptr; |
| 2363 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2364 | UniqueCFRef<CFStringRef> cfName = make_CFString(familyName); |
| 2365 | return CreateSet(cfName.get()); |
reed@google.com | 964988f | 2013-03-29 14:57:22 +0000 | [diff] [blame] | 2366 | } |
skia.committer@gmail.com | d55846d | 2013-03-30 07:01:27 +0000 | [diff] [blame] | 2367 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2368 | SkTypeface* onMatchFamilyStyle(const char familyName[], |
bungeman | 7575bb1 | 2017-05-01 13:02:42 -0400 | [diff] [blame] | 2369 | const SkFontStyle& style) const override { |
| 2370 | UniqueCFRef<CTFontDescriptorRef> desc = create_descriptor(familyName, style); |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2371 | return create_from_desc(desc.get()).release(); |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2372 | } |
skia.committer@gmail.com | e60ed08 | 2013-03-26 07:01:04 +0000 | [diff] [blame] | 2373 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2374 | SkTypeface* onMatchFamilyStyleCharacter(const char familyName[], |
| 2375 | const SkFontStyle& style, |
| 2376 | const char* bcp47[], int bcp47Count, |
| 2377 | SkUnichar character) const override { |
| 2378 | UniqueCFRef<CTFontDescriptorRef> desc = create_descriptor(familyName, style); |
| 2379 | UniqueCFRef<CTFontRef> currentFont(CTFontCreateWithFontDescriptor(desc.get(), 0, nullptr)); |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 2380 | |
| 2381 | // kCFStringEncodingUTF32 is BE unless there is a BOM. |
| 2382 | // Since there is no machine endian option, explicitly state machine endian. |
| 2383 | #ifdef SK_CPU_LENDIAN |
| 2384 | constexpr CFStringEncoding encoding = kCFStringEncodingUTF32LE; |
| 2385 | #else |
| 2386 | constexpr CFStringEncoding encoding = kCFStringEncodingUTF32BE; |
| 2387 | #endif |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2388 | UniqueCFRef<CFStringRef> string(CFStringCreateWithBytes( |
bungeman | bea9748 | 2016-08-24 08:29:50 -0700 | [diff] [blame] | 2389 | kCFAllocatorDefault, reinterpret_cast<const UInt8 *>(&character), sizeof(character), |
| 2390 | encoding, false)); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2391 | CFRange range = CFRangeMake(0, CFStringGetLength(string.get())); // in UniChar units. |
| 2392 | UniqueCFRef<CTFontRef> fallbackFont( |
| 2393 | CTFontCreateForString(currentFont.get(), string.get(), range)); |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2394 | return create_from_CTFontRef(std::move(fallbackFont), nullptr, false).release(); |
djsollen | 33068c1 | 2014-11-14 10:52:53 -0800 | [diff] [blame] | 2395 | } |
| 2396 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2397 | SkTypeface* onMatchFaceStyle(const SkTypeface* familyMember, |
| 2398 | const SkFontStyle&) const override { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2399 | return nullptr; |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2400 | } |
skia.committer@gmail.com | e60ed08 | 2013-03-26 07:01:04 +0000 | [diff] [blame] | 2401 | |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2402 | sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData> data, int ttcIndex) const override { |
| 2403 | UniqueCFRef<CGDataProviderRef> pr(SkCreateDataProviderFromData(std::move(data))); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2404 | if (!pr) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2405 | return nullptr; |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2406 | } |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2407 | return create_from_dataProvider(std::move(pr), ttcIndex); |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2408 | } |
| 2409 | |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2410 | sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset> stream, |
| 2411 | int ttcIndex) const override { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2412 | UniqueCFRef<CGDataProviderRef> pr(SkCreateDataProviderFromStream(std::move(stream))); |
| 2413 | if (!pr) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2414 | return nullptr; |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2415 | } |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2416 | return create_from_dataProvider(std::move(pr), ttcIndex); |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2417 | } |
| 2418 | |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2419 | /** Creates a dictionary suitable for setting the axes on a CGFont. */ |
| 2420 | static UniqueCFRef<CFDictionaryRef> copy_axes(CGFontRef cg, const SkFontArguments& args) { |
| 2421 | // The CGFont variation data is keyed by name, but lacks the tag. |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2422 | // The CTFont variation data is keyed by tag, and also has the name. |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2423 | // We would like to work with CTFont variations, but creating a CTFont font with |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2424 | // CTFont variation dictionary runs into bugs. So use the CTFont variation data |
| 2425 | // to match names to tags to create the appropriate CGFont. |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2426 | UniqueCFRef<CTFontRef> ct(CTFontCreateWithGraphicsFont(cg, 0, nullptr, nullptr)); |
bungeman | bc096bf | 2017-04-25 13:32:50 -0400 | [diff] [blame] | 2427 | // CTFontCopyVariationAxes returns nullptr for CGFontCreateWithDataProvider fonts with |
| 2428 | // macOS 10.10 and iOS 9 or earlier. When this happens, there is no API to provide the tag. |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2429 | UniqueCFRef<CFArrayRef> ctAxes(CTFontCopyVariationAxes(ct.get())); |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2430 | if (!ctAxes) { |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2431 | return nullptr; |
| 2432 | } |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2433 | CFIndex axisCount = CFArrayGetCount(ctAxes.get()); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2434 | |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2435 | const SkFontArguments::VariationPosition position = args.getVariationDesignPosition(); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2436 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2437 | UniqueCFRef<CFMutableDictionaryRef> dict( |
| 2438 | CFDictionaryCreateMutable(kCFAllocatorDefault, axisCount, |
| 2439 | &kCFTypeDictionaryKeyCallBacks, |
| 2440 | &kCFTypeDictionaryValueCallBacks)); |
| 2441 | |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2442 | for (int i = 0; i < axisCount; ++i) { |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2443 | CFTypeRef axisInfo = CFArrayGetValueAtIndex(ctAxes.get(), i); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2444 | if (CFDictionaryGetTypeID() != CFGetTypeID(axisInfo)) { |
| 2445 | return nullptr; |
| 2446 | } |
| 2447 | CFDictionaryRef axisInfoDict = static_cast<CFDictionaryRef>(axisInfo); |
| 2448 | |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2449 | // The assumption is that values produced by kCTFontVariationAxisNameKey and |
| 2450 | // kCGFontVariationAxisName will always be equal. |
| 2451 | // If they are ever not, seach the project history for "get_tag_for_name". |
| 2452 | CFTypeRef axisName = CFDictionaryGetValue(axisInfoDict, kCTFontVariationAxisNameKey); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2453 | if (!axisName || CFGetTypeID(axisName) != CFStringGetTypeID()) { |
| 2454 | return nullptr; |
| 2455 | } |
| 2456 | |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2457 | CFTypeRef tag = CFDictionaryGetValue(axisInfoDict, kCTFontVariationAxisIdentifierKey); |
| 2458 | if (!tag || CFGetTypeID(tag) != CFNumberGetTypeID()) { |
| 2459 | return nullptr; |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2460 | } |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2461 | CFNumberRef tagNumber = static_cast<CFNumberRef>(tag); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2462 | int64_t tagLong; |
| 2463 | if (!CFNumberGetValue(tagNumber, kCFNumberSInt64Type, &tagLong)) { |
| 2464 | return nullptr; |
| 2465 | } |
| 2466 | |
| 2467 | // The variation axes can be set to any value, but cg will effectively pin them. |
| 2468 | // Pin them here to normalize. |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2469 | CFTypeRef min = CFDictionaryGetValue(axisInfoDict, kCTFontVariationAxisMinimumValueKey); |
| 2470 | CFTypeRef max = CFDictionaryGetValue(axisInfoDict, kCTFontVariationAxisMaximumValueKey); |
| 2471 | CFTypeRef def = CFDictionaryGetValue(axisInfoDict, kCTFontVariationAxisDefaultValueKey); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2472 | if (!min || CFGetTypeID(min) != CFNumberGetTypeID() || |
| 2473 | !max || CFGetTypeID(max) != CFNumberGetTypeID() || |
| 2474 | !def || CFGetTypeID(def) != CFNumberGetTypeID()) |
| 2475 | { |
| 2476 | return nullptr; |
| 2477 | } |
| 2478 | CFNumberRef minNumber = static_cast<CFNumberRef>(min); |
| 2479 | CFNumberRef maxNumber = static_cast<CFNumberRef>(max); |
| 2480 | CFNumberRef defNumber = static_cast<CFNumberRef>(def); |
| 2481 | double minDouble; |
| 2482 | double maxDouble; |
| 2483 | double defDouble; |
| 2484 | if (!CFNumberGetValue(minNumber, kCFNumberDoubleType, &minDouble) || |
| 2485 | !CFNumberGetValue(maxNumber, kCFNumberDoubleType, &maxDouble) || |
| 2486 | !CFNumberGetValue(defNumber, kCFNumberDoubleType, &defDouble)) |
| 2487 | { |
| 2488 | return nullptr; |
| 2489 | } |
| 2490 | |
| 2491 | double value = defDouble; |
bungeman | 9aec894 | 2017-03-29 13:38:53 -0400 | [diff] [blame] | 2492 | // The position may be over specified. If there are multiple values for a given axis, |
| 2493 | // use the last one since that's what css-fonts-4 requires. |
| 2494 | for (int j = position.coordinateCount; j --> 0;) { |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2495 | if (position.coordinates[j].axis == tagLong) { |
| 2496 | value = SkTPin(SkScalarToDouble(position.coordinates[j].value), |
| 2497 | minDouble, maxDouble); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2498 | break; |
| 2499 | } |
| 2500 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2501 | UniqueCFRef<CFNumberRef> valueNumber( |
| 2502 | CFNumberCreate(kCFAllocatorDefault, kCFNumberDoubleType, &value)); |
| 2503 | CFDictionaryAddValue(dict.get(), axisName, valueNumber.get()); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2504 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2505 | return std::move(dict); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2506 | } |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2507 | sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset> s, |
| 2508 | const SkFontArguments& args) const override { |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2509 | if (args.getCollectionIndex() != 0) { |
| 2510 | return nullptr; |
| 2511 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2512 | UniqueCFRef<CGDataProviderRef> provider(SkCreateDataProviderFromStream(std::move(s))); |
| 2513 | if (!provider) { |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2514 | return nullptr; |
| 2515 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2516 | UniqueCFRef<CGFontRef> cg(CGFontCreateWithDataProvider(provider.get())); |
| 2517 | if (!cg) { |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2518 | return nullptr; |
| 2519 | } |
| 2520 | |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2521 | UniqueCFRef<CFDictionaryRef> cgVariations = copy_axes(cg.get(), args); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2522 | // The CGFontRef returned by CGFontCreateCopyWithVariations when the passed CGFontRef was |
| 2523 | // created from a data provider does not appear to have any ownership of the underlying |
| 2524 | // data. The original CGFontRef must be kept alive until the copy will no longer be used. |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2525 | UniqueCFRef<CGFontRef> cgVariant; |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2526 | if (cgVariations) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2527 | cgVariant.reset(CGFontCreateCopyWithVariations(cg.get(), cgVariations.get())); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2528 | } else { |
mtklein | 18300a3 | 2016-03-16 13:53:35 -0700 | [diff] [blame] | 2529 | cgVariant.reset(cg.release()); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2530 | } |
| 2531 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2532 | UniqueCFRef<CTFontRef> ct( |
| 2533 | CTFontCreateWithGraphicsFont(cgVariant.get(), 0, nullptr, nullptr)); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2534 | if (!ct) { |
| 2535 | return nullptr; |
| 2536 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2537 | return create_from_CTFontRef(std::move(ct), std::move(cg), true); |
bungeman | f6c7107 | 2016-01-21 14:17:47 -0800 | [diff] [blame] | 2538 | } |
| 2539 | |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2540 | /** Creates a dictionary suitable for setting the axes on a CGFont. */ |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2541 | static UniqueCFRef<CFDictionaryRef> copy_axes(CGFontRef cg, SkFontData* fontData) { |
| 2542 | UniqueCFRef<CFArrayRef> cgAxes(CGFontCopyVariationAxes(cg)); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2543 | if (!cgAxes) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2544 | return nullptr; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2545 | } |
| 2546 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2547 | CFIndex axisCount = CFArrayGetCount(cgAxes.get()); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2548 | if (0 == axisCount || axisCount != fontData->getAxisCount()) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2549 | return nullptr; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2550 | } |
| 2551 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2552 | UniqueCFRef<CFMutableDictionaryRef> dict( |
| 2553 | CFDictionaryCreateMutable(kCFAllocatorDefault, axisCount, |
| 2554 | &kCFTypeDictionaryKeyCallBacks, |
| 2555 | &kCFTypeDictionaryValueCallBacks)); |
| 2556 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2557 | for (int i = 0; i < fontData->getAxisCount(); ++i) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2558 | CFTypeRef axisInfo = CFArrayGetValueAtIndex(cgAxes.get(), i); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2559 | if (CFDictionaryGetTypeID() != CFGetTypeID(axisInfo)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2560 | return nullptr; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2561 | } |
| 2562 | CFDictionaryRef axisInfoDict = static_cast<CFDictionaryRef>(axisInfo); |
| 2563 | |
| 2564 | CFTypeRef axisName = CFDictionaryGetValue(axisInfoDict, kCGFontVariationAxisName); |
| 2565 | if (!axisName || CFGetTypeID(axisName) != CFStringGetTypeID()) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2566 | return nullptr; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2567 | } |
| 2568 | |
| 2569 | // The variation axes can be set to any value, but cg will effectively pin them. |
| 2570 | // Pin them here to normalize. |
| 2571 | CFTypeRef min = CFDictionaryGetValue(axisInfoDict, kCGFontVariationAxisMinValue); |
| 2572 | CFTypeRef max = CFDictionaryGetValue(axisInfoDict, kCGFontVariationAxisMaxValue); |
| 2573 | if (!min || CFGetTypeID(min) != CFNumberGetTypeID() || |
| 2574 | !max || CFGetTypeID(max) != CFNumberGetTypeID()) |
| 2575 | { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2576 | return nullptr; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2577 | } |
| 2578 | CFNumberRef minNumber = static_cast<CFNumberRef>(min); |
| 2579 | CFNumberRef maxNumber = static_cast<CFNumberRef>(max); |
| 2580 | double minDouble; |
| 2581 | double maxDouble; |
| 2582 | if (!CFNumberGetValue(minNumber, kCFNumberDoubleType, &minDouble) || |
| 2583 | !CFNumberGetValue(maxNumber, kCFNumberDoubleType, &maxDouble)) |
| 2584 | { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2585 | return nullptr; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2586 | } |
| 2587 | double value = SkTPin(SkFixedToDouble(fontData->getAxis()[i]), minDouble, maxDouble); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2588 | UniqueCFRef<CFNumberRef> valueNumber( |
| 2589 | CFNumberCreate(kCFAllocatorDefault, kCFNumberDoubleType, &value)); |
| 2590 | CFDictionaryAddValue(dict.get(), axisName, valueNumber.get()); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2591 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2592 | return std::move(dict); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2593 | } |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2594 | sk_sp<SkTypeface> onMakeFromFontData(std::unique_ptr<SkFontData> fontData) const override { |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2595 | if (fontData->getIndex() != 0) { |
| 2596 | return nullptr; |
| 2597 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2598 | UniqueCFRef<CGDataProviderRef> provider( |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame] | 2599 | SkCreateDataProviderFromStream(fontData->detachStream())); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2600 | if (!provider) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2601 | return nullptr; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2602 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2603 | UniqueCFRef<CGFontRef> cg(CGFontCreateWithDataProvider(provider.get())); |
| 2604 | if (!cg) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2605 | return nullptr; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2606 | } |
| 2607 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2608 | UniqueCFRef<CFDictionaryRef> cgVariations = copy_axes(cg.get(), fontData.get()); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2609 | // The CGFontRef returned by CGFontCreateCopyWithVariations when the passed CGFontRef was |
| 2610 | // created from a data provider does not appear to have any ownership of the underlying |
| 2611 | // data. The original CGFontRef must be kept alive until the copy will no longer be used. |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2612 | UniqueCFRef<CGFontRef> cgVariant; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2613 | if (cgVariations) { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2614 | cgVariant.reset(CGFontCreateCopyWithVariations(cg.get(), cgVariations.get())); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2615 | } else { |
mtklein | 18300a3 | 2016-03-16 13:53:35 -0700 | [diff] [blame] | 2616 | cgVariant.reset(cg.release()); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2617 | } |
| 2618 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2619 | UniqueCFRef<CTFontRef> ct( |
| 2620 | CTFontCreateWithGraphicsFont(cgVariant.get(), 0, nullptr, nullptr)); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2621 | if (!ct) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2622 | return nullptr; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2623 | } |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2624 | return create_from_CTFontRef(std::move(ct), std::move(cg), true); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 2625 | } |
| 2626 | |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2627 | sk_sp<SkTypeface> onMakeFromFile(const char path[], int ttcIndex) const override { |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2628 | UniqueCFRef<CGDataProviderRef> pr(CGDataProviderCreateWithFilename(path)); |
| 2629 | if (!pr) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 2630 | return nullptr; |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2631 | } |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 2632 | return create_from_dataProvider(std::move(pr), ttcIndex); |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2633 | } |
skia.committer@gmail.com | 76015b0 | 2013-07-31 07:01:00 +0000 | [diff] [blame] | 2634 | |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2635 | sk_sp<SkTypeface> onLegacyMakeTypeface(const char familyName[], SkFontStyle style) const override { |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 2636 | if (familyName) { |
| 2637 | familyName = map_css_names(familyName); |
| 2638 | } |
| 2639 | |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2640 | sk_sp<SkTypeface> face = create_from_name(familyName, style); |
bungeman | 53d5c6e | 2016-04-08 07:22:29 -0700 | [diff] [blame] | 2641 | if (face) { |
| 2642 | return face; |
bungeman | a4c4a2d | 2014-10-20 13:33:19 -0700 | [diff] [blame] | 2643 | } |
bungeman | 53d5c6e | 2016-04-08 07:22:29 -0700 | [diff] [blame] | 2644 | |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2645 | static SkTypeface* gDefaultFace; |
| 2646 | static SkOnce lookupDefault; |
bungeman | 83f1f44 | 2017-02-06 13:21:33 -0500 | [diff] [blame] | 2647 | static const char FONT_DEFAULT_NAME[] = "Lucida Sans"; |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2648 | lookupDefault([]{ |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2649 | gDefaultFace = create_from_name(FONT_DEFAULT_NAME, SkFontStyle()).release(); |
bungeman | c292b5f | 2016-12-20 12:04:29 -0500 | [diff] [blame] | 2650 | }); |
Mike Reed | 5922739 | 2017-09-26 09:46:08 -0400 | [diff] [blame] | 2651 | return sk_ref_sp(gDefaultFace); |
reed@google.com | 7fdcd44 | 2013-07-30 21:25:49 +0000 | [diff] [blame] | 2652 | } |
reed@google.com | 95625db | 2013-03-25 20:44:02 +0000 | [diff] [blame] | 2653 | }; |
| 2654 | |
reed@google.com | 7fdcd44 | 2013-07-30 21:25:49 +0000 | [diff] [blame] | 2655 | /////////////////////////////////////////////////////////////////////////////// |
| 2656 | |
Ben Wagner | 3546ff1 | 2017-01-03 13:32:36 -0500 | [diff] [blame] | 2657 | sk_sp<SkFontMgr> SkFontMgr::Factory() { return sk_make_sp<SkFontMgr_Mac>(); } |
mtklein | 1ee7651 | 2015-11-02 10:20:27 -0800 | [diff] [blame] | 2658 | |
| 2659 | #endif//defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS) |