epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2006 The Android Open Source Project |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | |
| 10 | #include "SkDraw.h" |
| 11 | #include "SkBlitter.h" |
| 12 | #include "SkBounder.h" |
| 13 | #include "SkCanvas.h" |
| 14 | #include "SkColorPriv.h" |
| 15 | #include "SkDevice.h" |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 16 | #include "SkFixed.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 17 | #include "SkMaskFilter.h" |
| 18 | #include "SkPaint.h" |
| 19 | #include "SkPathEffect.h" |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 20 | #include "SkRasterClip.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 21 | #include "SkRasterizer.h" |
| 22 | #include "SkScan.h" |
| 23 | #include "SkShader.h" |
| 24 | #include "SkStroke.h" |
| 25 | #include "SkTemplatesPriv.h" |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 26 | #include "SkTLazy.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 27 | #include "SkUtils.h" |
| 28 | |
| 29 | #include "SkAutoKern.h" |
| 30 | #include "SkBitmapProcShader.h" |
| 31 | #include "SkDrawProcs.h" |
| 32 | |
| 33 | //#define TRACE_BITMAP_DRAWS |
| 34 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 35 | #define kBlitterStorageLongCount (sizeof(SkBitmapProcShader) >> 2) |
| 36 | |
reed@google.com | fd4236e | 2011-07-25 21:16:22 +0000 | [diff] [blame] | 37 | /** Helper for allocating small blitters on the stack. |
| 38 | */ |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 39 | class SkAutoBlitterChoose : SkNoncopyable { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 40 | public: |
reed@google.com | 1d6ee0b | 2011-07-05 17:44:56 +0000 | [diff] [blame] | 41 | SkAutoBlitterChoose() { |
| 42 | fBlitter = NULL; |
| 43 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 44 | SkAutoBlitterChoose(const SkBitmap& device, const SkMatrix& matrix, |
| 45 | const SkPaint& paint) { |
| 46 | fBlitter = SkBlitter::Choose(device, matrix, paint, |
| 47 | fStorage, sizeof(fStorage)); |
| 48 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 49 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 50 | ~SkAutoBlitterChoose(); |
| 51 | |
| 52 | SkBlitter* operator->() { return fBlitter; } |
| 53 | SkBlitter* get() const { return fBlitter; } |
| 54 | |
reed@google.com | 1d6ee0b | 2011-07-05 17:44:56 +0000 | [diff] [blame] | 55 | void choose(const SkBitmap& device, const SkMatrix& matrix, |
| 56 | const SkPaint& paint) { |
| 57 | SkASSERT(!fBlitter); |
| 58 | fBlitter = SkBlitter::Choose(device, matrix, paint, |
| 59 | fStorage, sizeof(fStorage)); |
| 60 | } |
| 61 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 62 | private: |
| 63 | SkBlitter* fBlitter; |
| 64 | uint32_t fStorage[kBlitterStorageLongCount]; |
| 65 | }; |
| 66 | |
| 67 | SkAutoBlitterChoose::~SkAutoBlitterChoose() { |
| 68 | if ((void*)fBlitter == (void*)fStorage) { |
| 69 | fBlitter->~SkBlitter(); |
| 70 | } else { |
| 71 | SkDELETE(fBlitter); |
| 72 | } |
| 73 | } |
| 74 | |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 75 | /** |
| 76 | * Since we are providing the storage for the shader (to avoid the perf cost |
| 77 | * of calling new) we insist that in our destructor we can account for all |
| 78 | * owners of the shader. |
| 79 | */ |
| 80 | class SkAutoBitmapShaderInstall : SkNoncopyable { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 81 | public: |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 82 | SkAutoBitmapShaderInstall(const SkBitmap& src, const SkPaint& paint) |
| 83 | : fPaint(paint) /* makes a copy of the paint */ { |
| 84 | fPaint.setShader(SkShader::CreateBitmapShader(src, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 85 | SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, |
| 86 | fStorage, sizeof(fStorage))); |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 87 | // we deliberately left the shader with an owner-count of 2 |
| 88 | SkASSERT(2 == fPaint.getShader()->getRefCnt()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 89 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 90 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 91 | ~SkAutoBitmapShaderInstall() { |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 92 | SkShader* shader = fPaint.getShader(); |
| 93 | // since we manually destroy shader, we insist that owners == 2 |
| 94 | SkASSERT(2 == shader->getRefCnt()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 95 | |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 96 | fPaint.setShader(NULL); // unref the shader by 1 |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 97 | |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 98 | // now destroy to take care of the 2nd owner-count |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 99 | if ((void*)shader == (void*)fStorage) { |
| 100 | shader->~SkShader(); |
| 101 | } else { |
| 102 | SkDELETE(shader); |
| 103 | } |
| 104 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 105 | |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 106 | // return the new paint that has the shader applied |
| 107 | const SkPaint& paintWithShader() const { return fPaint; } |
| 108 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 109 | private: |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 110 | SkPaint fPaint; // copy of caller's paint (which we then modify) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 111 | uint32_t fStorage[kBlitterStorageLongCount]; |
| 112 | }; |
| 113 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 114 | /////////////////////////////////////////////////////////////////////////////// |
| 115 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 116 | SkDraw::SkDraw() { |
| 117 | sk_bzero(this, sizeof(*this)); |
| 118 | } |
| 119 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 120 | SkDraw::SkDraw(const SkDraw& src) { |
| 121 | memcpy(this, &src, sizeof(*this)); |
| 122 | } |
| 123 | |
| 124 | /////////////////////////////////////////////////////////////////////////////// |
| 125 | |
| 126 | typedef void (*BitmapXferProc)(void* pixels, size_t bytes, uint32_t data); |
| 127 | |
| 128 | static void D_Clear_BitmapXferProc(void* pixels, size_t bytes, uint32_t) { |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 129 | sk_bzero(pixels, bytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | static void D_Dst_BitmapXferProc(void*, size_t, uint32_t data) {} |
| 133 | |
| 134 | static void D32_Src_BitmapXferProc(void* pixels, size_t bytes, uint32_t data) { |
| 135 | sk_memset32((uint32_t*)pixels, data, bytes >> 2); |
| 136 | } |
| 137 | |
| 138 | static void D16_Src_BitmapXferProc(void* pixels, size_t bytes, uint32_t data) { |
| 139 | sk_memset16((uint16_t*)pixels, data, bytes >> 1); |
| 140 | } |
| 141 | |
| 142 | static void DA8_Src_BitmapXferProc(void* pixels, size_t bytes, uint32_t data) { |
| 143 | memset(pixels, data, bytes); |
| 144 | } |
| 145 | |
| 146 | static BitmapXferProc ChooseBitmapXferProc(const SkBitmap& bitmap, |
| 147 | const SkPaint& paint, |
| 148 | uint32_t* data) { |
| 149 | // todo: we can apply colorfilter up front if no shader, so we wouldn't |
| 150 | // need to abort this fastpath |
| 151 | if (paint.getShader() || paint.getColorFilter()) { |
| 152 | return NULL; |
| 153 | } |
| 154 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 155 | SkXfermode::Mode mode; |
mike@reedtribe.org | be2aa2a | 2011-11-17 02:32:04 +0000 | [diff] [blame] | 156 | if (!SkXfermode::AsMode(paint.getXfermode(), &mode)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 157 | return NULL; |
| 158 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 159 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 160 | SkColor color = paint.getColor(); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 161 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 162 | // collaps modes based on color... |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 163 | if (SkXfermode::kSrcOver_Mode == mode) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 164 | unsigned alpha = SkColorGetA(color); |
| 165 | if (0 == alpha) { |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 166 | mode = SkXfermode::kDst_Mode; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 167 | } else if (0xFF == alpha) { |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 168 | mode = SkXfermode::kSrc_Mode; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 169 | } |
| 170 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 171 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 172 | switch (mode) { |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 173 | case SkXfermode::kClear_Mode: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 174 | // SkDebugf("--- D_Clear_BitmapXferProc\n"); |
| 175 | return D_Clear_BitmapXferProc; // ignore data |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 176 | case SkXfermode::kDst_Mode: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 177 | // SkDebugf("--- D_Dst_BitmapXferProc\n"); |
| 178 | return D_Dst_BitmapXferProc; // ignore data |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 179 | case SkXfermode::kSrc_Mode: { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 180 | /* |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 181 | should I worry about dithering for the lower depths? |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 182 | */ |
| 183 | SkPMColor pmc = SkPreMultiplyColor(color); |
| 184 | switch (bitmap.config()) { |
| 185 | case SkBitmap::kARGB_8888_Config: |
| 186 | if (data) { |
| 187 | *data = pmc; |
| 188 | } |
| 189 | // SkDebugf("--- D32_Src_BitmapXferProc\n"); |
| 190 | return D32_Src_BitmapXferProc; |
| 191 | case SkBitmap::kARGB_4444_Config: |
| 192 | if (data) { |
| 193 | *data = SkPixel32ToPixel4444(pmc); |
| 194 | } |
| 195 | // SkDebugf("--- D16_Src_BitmapXferProc\n"); |
| 196 | return D16_Src_BitmapXferProc; |
| 197 | case SkBitmap::kRGB_565_Config: |
| 198 | if (data) { |
| 199 | *data = SkPixel32ToPixel16(pmc); |
| 200 | } |
| 201 | // SkDebugf("--- D16_Src_BitmapXferProc\n"); |
| 202 | return D16_Src_BitmapXferProc; |
| 203 | case SkBitmap::kA8_Config: |
| 204 | if (data) { |
| 205 | *data = SkGetPackedA32(pmc); |
| 206 | } |
| 207 | // SkDebugf("--- DA8_Src_BitmapXferProc\n"); |
| 208 | return DA8_Src_BitmapXferProc; |
| 209 | default: |
| 210 | break; |
| 211 | } |
| 212 | break; |
| 213 | } |
| 214 | default: |
| 215 | break; |
| 216 | } |
| 217 | return NULL; |
| 218 | } |
| 219 | |
| 220 | static void CallBitmapXferProc(const SkBitmap& bitmap, const SkIRect& rect, |
| 221 | BitmapXferProc proc, uint32_t procData) { |
| 222 | int shiftPerPixel; |
| 223 | switch (bitmap.config()) { |
| 224 | case SkBitmap::kARGB_8888_Config: |
| 225 | shiftPerPixel = 2; |
| 226 | break; |
| 227 | case SkBitmap::kARGB_4444_Config: |
| 228 | case SkBitmap::kRGB_565_Config: |
| 229 | shiftPerPixel = 1; |
| 230 | break; |
| 231 | case SkBitmap::kA8_Config: |
| 232 | shiftPerPixel = 0; |
| 233 | break; |
| 234 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 235 | SkDEBUGFAIL("Can't use xferproc on this config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 236 | return; |
| 237 | } |
| 238 | |
| 239 | uint8_t* pixels = (uint8_t*)bitmap.getPixels(); |
| 240 | SkASSERT(pixels); |
| 241 | const size_t rowBytes = bitmap.rowBytes(); |
| 242 | const int widthBytes = rect.width() << shiftPerPixel; |
| 243 | |
| 244 | // skip down to the first scanline and X position |
| 245 | pixels += rect.fTop * rowBytes + (rect.fLeft << shiftPerPixel); |
| 246 | for (int scans = rect.height() - 1; scans >= 0; --scans) { |
| 247 | proc(pixels, widthBytes, procData); |
| 248 | pixels += rowBytes; |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | void SkDraw::drawPaint(const SkPaint& paint) const { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 253 | SkDEBUGCODE(this->validate();) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 254 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 255 | if (fRC->isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 256 | return; |
| 257 | } |
| 258 | |
| 259 | SkIRect devRect; |
| 260 | devRect.set(0, 0, fBitmap->width(), fBitmap->height()); |
| 261 | if (fBounder && !fBounder->doIRect(devRect)) { |
| 262 | return; |
| 263 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 264 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 265 | if (fRC->isBW()) { |
| 266 | /* If we don't have a shader (i.e. we're just a solid color) we may |
| 267 | be faster to operate directly on the device bitmap, rather than invoking |
| 268 | a blitter. Esp. true for xfermodes, which require a colorshader to be |
| 269 | present, which is just redundant work. Since we're drawing everywhere |
| 270 | in the clip, we don't have to worry about antialiasing. |
| 271 | */ |
| 272 | uint32_t procData = 0; // to avoid the warning |
| 273 | BitmapXferProc proc = ChooseBitmapXferProc(*fBitmap, paint, &procData); |
| 274 | if (proc) { |
| 275 | if (D_Dst_BitmapXferProc == proc) { // nothing to do |
| 276 | return; |
| 277 | } |
| 278 | |
| 279 | SkRegion::Iterator iter(fRC->bwRgn()); |
| 280 | while (!iter.done()) { |
| 281 | CallBitmapXferProc(*fBitmap, iter.rect(), proc, procData); |
| 282 | iter.next(); |
| 283 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 284 | return; |
| 285 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 286 | } |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 287 | |
| 288 | // normal case: use a blitter |
| 289 | SkAutoBlitterChoose blitter(*fBitmap, *fMatrix, paint); |
| 290 | SkScan::FillIRect(devRect, *fRC, blitter.get()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 291 | } |
| 292 | |
| 293 | /////////////////////////////////////////////////////////////////////////////// |
| 294 | |
| 295 | struct PtProcRec { |
| 296 | SkCanvas::PointMode fMode; |
| 297 | const SkPaint* fPaint; |
| 298 | const SkRegion* fClip; |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 299 | const SkRasterClip* fRC; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 300 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 301 | // computed values |
| 302 | SkFixed fRadius; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 303 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 304 | typedef void (*Proc)(const PtProcRec&, const SkPoint devPts[], int count, |
| 305 | SkBlitter*); |
| 306 | |
| 307 | bool init(SkCanvas::PointMode, const SkPaint&, const SkMatrix* matrix, |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 308 | const SkRasterClip*); |
| 309 | Proc chooseProc(SkBlitter** blitter); |
| 310 | |
| 311 | private: |
| 312 | SkAAClipBlitterWrapper fWrapper; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 313 | }; |
| 314 | |
| 315 | static void bw_pt_rect_hair_proc(const PtProcRec& rec, const SkPoint devPts[], |
| 316 | int count, SkBlitter* blitter) { |
| 317 | SkASSERT(rec.fClip->isRect()); |
| 318 | const SkIRect& r = rec.fClip->getBounds(); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 319 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 320 | for (int i = 0; i < count; i++) { |
| 321 | int x = SkScalarFloor(devPts[i].fX); |
| 322 | int y = SkScalarFloor(devPts[i].fY); |
| 323 | if (r.contains(x, y)) { |
| 324 | blitter->blitH(x, y, 1); |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | static void bw_pt_rect_16_hair_proc(const PtProcRec& rec, |
| 330 | const SkPoint devPts[], int count, |
| 331 | SkBlitter* blitter) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 332 | SkASSERT(rec.fRC->isRect()); |
| 333 | const SkIRect& r = rec.fRC->getBounds(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 334 | uint32_t value; |
| 335 | const SkBitmap* bitmap = blitter->justAnOpaqueColor(&value); |
| 336 | SkASSERT(bitmap); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 337 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 338 | uint16_t* addr = bitmap->getAddr16(0, 0); |
| 339 | int rb = bitmap->rowBytes(); |
| 340 | |
| 341 | for (int i = 0; i < count; i++) { |
| 342 | int x = SkScalarFloor(devPts[i].fX); |
| 343 | int y = SkScalarFloor(devPts[i].fY); |
| 344 | if (r.contains(x, y)) { |
| 345 | // *bitmap->getAddr16(x, y) = SkToU16(value); |
| 346 | ((uint16_t*)((char*)addr + y * rb))[x] = SkToU16(value); |
| 347 | } |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | static void bw_pt_hair_proc(const PtProcRec& rec, const SkPoint devPts[], |
| 352 | int count, SkBlitter* blitter) { |
| 353 | for (int i = 0; i < count; i++) { |
| 354 | int x = SkScalarFloor(devPts[i].fX); |
| 355 | int y = SkScalarFloor(devPts[i].fY); |
| 356 | if (rec.fClip->contains(x, y)) { |
| 357 | blitter->blitH(x, y, 1); |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | static void bw_line_hair_proc(const PtProcRec& rec, const SkPoint devPts[], |
| 363 | int count, SkBlitter* blitter) { |
| 364 | for (int i = 0; i < count; i += 2) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 365 | SkScan::HairLine(devPts[i], devPts[i+1], *rec.fRC, blitter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 366 | } |
| 367 | } |
| 368 | |
| 369 | static void bw_poly_hair_proc(const PtProcRec& rec, const SkPoint devPts[], |
| 370 | int count, SkBlitter* blitter) { |
| 371 | for (int i = 0; i < count - 1; i++) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 372 | SkScan::HairLine(devPts[i], devPts[i+1], *rec.fRC, blitter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 373 | } |
| 374 | } |
| 375 | |
| 376 | // aa versions |
| 377 | |
| 378 | static void aa_line_hair_proc(const PtProcRec& rec, const SkPoint devPts[], |
| 379 | int count, SkBlitter* blitter) { |
| 380 | for (int i = 0; i < count; i += 2) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 381 | SkScan::AntiHairLine(devPts[i], devPts[i+1], *rec.fRC, blitter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 382 | } |
| 383 | } |
| 384 | |
| 385 | static void aa_poly_hair_proc(const PtProcRec& rec, const SkPoint devPts[], |
| 386 | int count, SkBlitter* blitter) { |
| 387 | for (int i = 0; i < count - 1; i++) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 388 | SkScan::AntiHairLine(devPts[i], devPts[i+1], *rec.fRC, blitter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 389 | } |
| 390 | } |
| 391 | |
| 392 | // square procs (strokeWidth > 0 but matrix is square-scale (sx == sy) |
| 393 | |
| 394 | static void bw_square_proc(const PtProcRec& rec, const SkPoint devPts[], |
| 395 | int count, SkBlitter* blitter) { |
| 396 | const SkFixed radius = rec.fRadius; |
| 397 | for (int i = 0; i < count; i++) { |
| 398 | SkFixed x = SkScalarToFixed(devPts[i].fX); |
| 399 | SkFixed y = SkScalarToFixed(devPts[i].fY); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 400 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 401 | SkXRect r; |
| 402 | r.fLeft = x - radius; |
| 403 | r.fTop = y - radius; |
| 404 | r.fRight = x + radius; |
| 405 | r.fBottom = y + radius; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 406 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 407 | SkScan::FillXRect(r, *rec.fRC, blitter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 408 | } |
| 409 | } |
| 410 | |
| 411 | static void aa_square_proc(const PtProcRec& rec, const SkPoint devPts[], |
| 412 | int count, SkBlitter* blitter) { |
| 413 | const SkFixed radius = rec.fRadius; |
| 414 | for (int i = 0; i < count; i++) { |
| 415 | SkFixed x = SkScalarToFixed(devPts[i].fX); |
| 416 | SkFixed y = SkScalarToFixed(devPts[i].fY); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 417 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 418 | SkXRect r; |
| 419 | r.fLeft = x - radius; |
| 420 | r.fTop = y - radius; |
| 421 | r.fRight = x + radius; |
| 422 | r.fBottom = y + radius; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 423 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 424 | SkScan::AntiFillXRect(r, *rec.fRC, blitter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 425 | } |
| 426 | } |
| 427 | |
reed@android.com | b4f404a | 2009-07-10 17:02:17 +0000 | [diff] [blame] | 428 | // If this guy returns true, then chooseProc() must return a valid proc |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 429 | bool PtProcRec::init(SkCanvas::PointMode mode, const SkPaint& paint, |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 430 | const SkMatrix* matrix, const SkRasterClip* rc) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 431 | if (paint.getPathEffect()) { |
| 432 | return false; |
| 433 | } |
| 434 | SkScalar width = paint.getStrokeWidth(); |
| 435 | if (0 == width) { |
| 436 | fMode = mode; |
| 437 | fPaint = &paint; |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 438 | fClip = NULL; |
| 439 | fRC = rc; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 440 | fRadius = SK_Fixed1 >> 1; |
| 441 | return true; |
| 442 | } |
reed@android.com | b4f404a | 2009-07-10 17:02:17 +0000 | [diff] [blame] | 443 | if (paint.getStrokeCap() != SkPaint::kRound_Cap && |
| 444 | matrix->rectStaysRect() && SkCanvas::kPoints_PointMode == mode) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 445 | SkScalar sx = matrix->get(SkMatrix::kMScaleX); |
| 446 | SkScalar sy = matrix->get(SkMatrix::kMScaleY); |
| 447 | if (SkScalarNearlyZero(sx - sy)) { |
| 448 | if (sx < 0) { |
| 449 | sx = -sx; |
| 450 | } |
| 451 | |
| 452 | fMode = mode; |
| 453 | fPaint = &paint; |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 454 | fClip = NULL; |
| 455 | fRC = rc; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 456 | fRadius = SkScalarToFixed(SkScalarMul(width, sx)) >> 1; |
| 457 | return true; |
| 458 | } |
| 459 | } |
| 460 | return false; |
| 461 | } |
| 462 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 463 | PtProcRec::Proc PtProcRec::chooseProc(SkBlitter** blitterPtr) { |
reed@android.com | b4f404a | 2009-07-10 17:02:17 +0000 | [diff] [blame] | 464 | Proc proc = NULL; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 465 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 466 | SkBlitter* blitter = *blitterPtr; |
| 467 | if (fRC->isBW()) { |
| 468 | fClip = &fRC->bwRgn(); |
| 469 | } else { |
| 470 | fWrapper.init(*fRC, blitter); |
| 471 | fClip = &fWrapper.getRgn(); |
| 472 | blitter = fWrapper.getBlitter(); |
| 473 | *blitterPtr = blitter; |
| 474 | } |
| 475 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 476 | // for our arrays |
| 477 | SkASSERT(0 == SkCanvas::kPoints_PointMode); |
| 478 | SkASSERT(1 == SkCanvas::kLines_PointMode); |
| 479 | SkASSERT(2 == SkCanvas::kPolygon_PointMode); |
| 480 | SkASSERT((unsigned)fMode <= (unsigned)SkCanvas::kPolygon_PointMode); |
| 481 | |
| 482 | // first check for hairlines |
| 483 | if (0 == fPaint->getStrokeWidth()) { |
| 484 | if (fPaint->isAntiAlias()) { |
| 485 | static const Proc gAAProcs[] = { |
| 486 | aa_square_proc, aa_line_hair_proc, aa_poly_hair_proc |
| 487 | }; |
| 488 | proc = gAAProcs[fMode]; |
| 489 | } else { |
| 490 | if (SkCanvas::kPoints_PointMode == fMode && fClip->isRect()) { |
| 491 | uint32_t value; |
| 492 | const SkBitmap* bm = blitter->justAnOpaqueColor(&value); |
| 493 | if (bm && bm->config() == SkBitmap::kRGB_565_Config) { |
| 494 | proc = bw_pt_rect_16_hair_proc; |
| 495 | } else { |
| 496 | proc = bw_pt_rect_hair_proc; |
| 497 | } |
| 498 | } else { |
| 499 | static Proc gBWProcs[] = { |
| 500 | bw_pt_hair_proc, bw_line_hair_proc, bw_poly_hair_proc |
| 501 | }; |
| 502 | proc = gBWProcs[fMode]; |
| 503 | } |
| 504 | } |
reed@android.com | b4f404a | 2009-07-10 17:02:17 +0000 | [diff] [blame] | 505 | } else if (fPaint->getStrokeCap() != SkPaint::kRound_Cap) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 506 | SkASSERT(SkCanvas::kPoints_PointMode == fMode); |
| 507 | if (fPaint->isAntiAlias()) { |
| 508 | proc = aa_square_proc; |
| 509 | } else { |
| 510 | proc = bw_square_proc; |
| 511 | } |
| 512 | } |
| 513 | return proc; |
| 514 | } |
| 515 | |
| 516 | static bool bounder_points(SkBounder* bounder, SkCanvas::PointMode mode, |
| 517 | size_t count, const SkPoint pts[], |
| 518 | const SkPaint& paint, const SkMatrix& matrix) { |
| 519 | SkIRect ibounds; |
| 520 | SkRect bounds; |
| 521 | SkScalar inset = paint.getStrokeWidth(); |
| 522 | |
| 523 | bounds.set(pts, count); |
| 524 | bounds.inset(-inset, -inset); |
| 525 | matrix.mapRect(&bounds); |
| 526 | |
| 527 | bounds.roundOut(&ibounds); |
| 528 | return bounder->doIRect(ibounds); |
| 529 | } |
| 530 | |
| 531 | // each of these costs 8-bytes of stack space, so don't make it too large |
| 532 | // must be even for lines/polygon to work |
| 533 | #define MAX_DEV_PTS 32 |
| 534 | |
| 535 | void SkDraw::drawPoints(SkCanvas::PointMode mode, size_t count, |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 536 | const SkPoint pts[], const SkPaint& paint, |
| 537 | bool forceUseDevice) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 538 | // if we're in lines mode, force count to be even |
| 539 | if (SkCanvas::kLines_PointMode == mode) { |
| 540 | count &= ~(size_t)1; |
| 541 | } |
| 542 | |
| 543 | if ((long)count <= 0) { |
| 544 | return; |
| 545 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 546 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 547 | SkASSERT(pts != NULL); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 548 | SkDEBUGCODE(this->validate();) |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 549 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 550 | // nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 551 | if (fRC->isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 552 | return; |
| 553 | } |
| 554 | |
reed@google.com | fd4236e | 2011-07-25 21:16:22 +0000 | [diff] [blame] | 555 | if (fBounder) { |
| 556 | if (!bounder_points(fBounder, mode, count, pts, paint, *fMatrix)) { |
| 557 | return; |
| 558 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 559 | |
reed@google.com | fd4236e | 2011-07-25 21:16:22 +0000 | [diff] [blame] | 560 | // clear the bounder and call this again, so we don't invoke the bounder |
| 561 | // later if we happen to call ourselves for drawRect, drawPath, etc. |
| 562 | SkDraw noBounder(*this); |
| 563 | noBounder.fBounder = NULL; |
| 564 | noBounder.drawPoints(mode, count, pts, paint, forceUseDevice); |
| 565 | return; |
| 566 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 567 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 568 | PtProcRec rec; |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 569 | if (!forceUseDevice && rec.init(mode, paint, fMatrix, fRC)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 570 | SkAutoBlitterChoose blitter(*fBitmap, *fMatrix, paint); |
| 571 | |
| 572 | SkPoint devPts[MAX_DEV_PTS]; |
| 573 | const SkMatrix* matrix = fMatrix; |
| 574 | SkBlitter* bltr = blitter.get(); |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 575 | PtProcRec::Proc proc = rec.chooseProc(&bltr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 576 | // we have to back up subsequent passes if we're in polygon mode |
| 577 | const size_t backup = (SkCanvas::kPolygon_PointMode == mode); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 578 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 579 | do { |
| 580 | size_t n = count; |
| 581 | if (n > MAX_DEV_PTS) { |
| 582 | n = MAX_DEV_PTS; |
| 583 | } |
| 584 | matrix->mapPoints(devPts, pts, n); |
| 585 | proc(rec, devPts, n, bltr); |
| 586 | pts += n - backup; |
| 587 | SkASSERT(count >= n); |
| 588 | count -= n; |
| 589 | if (count > 0) { |
| 590 | count += backup; |
| 591 | } |
| 592 | } while (count != 0); |
| 593 | } else { |
| 594 | switch (mode) { |
| 595 | case SkCanvas::kPoints_PointMode: { |
| 596 | // temporarily mark the paint as filling. |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 597 | SkPaint newPaint(paint); |
| 598 | newPaint.setStyle(SkPaint::kFill_Style); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 599 | |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 600 | SkScalar width = newPaint.getStrokeWidth(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 601 | SkScalar radius = SkScalarHalf(width); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 602 | |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 603 | if (newPaint.getStrokeCap() == SkPaint::kRound_Cap) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 604 | SkPath path; |
| 605 | SkMatrix preMatrix; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 606 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 607 | path.addCircle(0, 0, radius); |
| 608 | for (size_t i = 0; i < count; i++) { |
| 609 | preMatrix.setTranslate(pts[i].fX, pts[i].fY); |
| 610 | // pass true for the last point, since we can modify |
| 611 | // then path then |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 612 | if (fDevice) { |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 613 | fDevice->drawPath(*this, path, newPaint, &preMatrix, |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 614 | (count-1) == i); |
| 615 | } else { |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 616 | this->drawPath(path, newPaint, &preMatrix, |
| 617 | (count-1) == i); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 618 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 619 | } |
| 620 | } else { |
| 621 | SkRect r; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 622 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 623 | for (size_t i = 0; i < count; i++) { |
| 624 | r.fLeft = pts[i].fX - radius; |
| 625 | r.fTop = pts[i].fY - radius; |
| 626 | r.fRight = r.fLeft + width; |
| 627 | r.fBottom = r.fTop + width; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 628 | if (fDevice) { |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 629 | fDevice->drawRect(*this, r, newPaint); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 630 | } else { |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 631 | this->drawRect(r, newPaint); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 632 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 633 | } |
| 634 | } |
| 635 | break; |
| 636 | } |
| 637 | case SkCanvas::kLines_PointMode: |
| 638 | case SkCanvas::kPolygon_PointMode: { |
| 639 | count -= 1; |
| 640 | SkPath path; |
| 641 | SkPaint p(paint); |
| 642 | p.setStyle(SkPaint::kStroke_Style); |
| 643 | size_t inc = (SkCanvas::kLines_PointMode == mode) ? 2 : 1; |
| 644 | for (size_t i = 0; i < count; i += inc) { |
| 645 | path.moveTo(pts[i]); |
| 646 | path.lineTo(pts[i+1]); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 647 | if (fDevice) { |
| 648 | fDevice->drawPath(*this, path, p, NULL, true); |
| 649 | } else { |
| 650 | this->drawPath(path, p, NULL, true); |
| 651 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 652 | path.rewind(); |
| 653 | } |
| 654 | break; |
| 655 | } |
| 656 | } |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | static inline SkPoint* as_lefttop(SkRect* r) { |
| 661 | return (SkPoint*)(void*)r; |
| 662 | } |
| 663 | |
| 664 | static inline SkPoint* as_rightbottom(SkRect* r) { |
| 665 | return ((SkPoint*)(void*)r) + 1; |
| 666 | } |
| 667 | |
reed@google.com | 761fb62 | 2011-04-04 18:58:05 +0000 | [diff] [blame] | 668 | static bool easy_rect_join(const SkPaint& paint, const SkMatrix& matrix, |
| 669 | SkPoint* strokeSize) { |
| 670 | if (SkPaint::kMiter_Join != paint.getStrokeJoin() || |
| 671 | paint.getStrokeMiter() < SK_ScalarSqrt2) { |
| 672 | return false; |
| 673 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 674 | |
reed@google.com | 761fb62 | 2011-04-04 18:58:05 +0000 | [diff] [blame] | 675 | SkASSERT(matrix.rectStaysRect()); |
| 676 | SkPoint pt = { paint.getStrokeWidth(), paint.getStrokeWidth() }; |
| 677 | matrix.mapVectors(strokeSize, &pt, 1); |
reed@google.com | 6115338 | 2011-04-05 13:05:18 +0000 | [diff] [blame] | 678 | strokeSize->fX = SkScalarAbs(strokeSize->fX); |
| 679 | strokeSize->fY = SkScalarAbs(strokeSize->fY); |
reed@google.com | 761fb62 | 2011-04-04 18:58:05 +0000 | [diff] [blame] | 680 | return true; |
mike@reedtribe.org | 7ff678b | 2011-04-04 14:38:12 +0000 | [diff] [blame] | 681 | } |
| 682 | |
reed@google.com | 62ab7ad | 2011-04-05 14:08:25 +0000 | [diff] [blame] | 683 | SkDraw::RectType SkDraw::ComputeRectType(const SkPaint& paint, |
| 684 | const SkMatrix& matrix, |
| 685 | SkPoint* strokeSize) { |
| 686 | RectType rtype; |
| 687 | const SkScalar width = paint.getStrokeWidth(); |
| 688 | const bool zeroWidth = (0 == width); |
| 689 | SkPaint::Style style = paint.getStyle(); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 690 | |
reed@google.com | 62ab7ad | 2011-04-05 14:08:25 +0000 | [diff] [blame] | 691 | if ((SkPaint::kStrokeAndFill_Style == style) && zeroWidth) { |
| 692 | style = SkPaint::kFill_Style; |
| 693 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 694 | |
reed@google.com | 62ab7ad | 2011-04-05 14:08:25 +0000 | [diff] [blame] | 695 | if (paint.getPathEffect() || paint.getMaskFilter() || |
| 696 | paint.getRasterizer() || !matrix.rectStaysRect() || |
| 697 | SkPaint::kStrokeAndFill_Style == style) { |
| 698 | rtype = kPath_RectType; |
| 699 | } else if (SkPaint::kFill_Style == style) { |
| 700 | rtype = kFill_RectType; |
| 701 | } else if (zeroWidth) { |
| 702 | rtype = kHair_RectType; |
| 703 | } else if (easy_rect_join(paint, matrix, strokeSize)) { |
| 704 | rtype = kStroke_RectType; |
| 705 | } else { |
| 706 | rtype = kPath_RectType; |
| 707 | } |
| 708 | return rtype; |
| 709 | } |
mike@reedtribe.org | 7ff678b | 2011-04-04 14:38:12 +0000 | [diff] [blame] | 710 | |
reed@google.com | 7324415 | 2012-05-11 14:35:23 +0000 | [diff] [blame] | 711 | static const SkPoint* rect_points(const SkRect& r) { |
| 712 | return (const SkPoint*)(void*)&r; |
| 713 | } |
| 714 | |
| 715 | static SkPoint* rect_points(SkRect& r) { |
| 716 | return (SkPoint*)(void*)&r; |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 717 | } |
| 718 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 719 | void SkDraw::drawRect(const SkRect& rect, const SkPaint& paint) const { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 720 | SkDEBUGCODE(this->validate();) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 721 | |
| 722 | // nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 723 | if (fRC->isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 724 | return; |
| 725 | } |
| 726 | |
reed@google.com | 761fb62 | 2011-04-04 18:58:05 +0000 | [diff] [blame] | 727 | SkPoint strokeSize; |
reed@google.com | 62ab7ad | 2011-04-05 14:08:25 +0000 | [diff] [blame] | 728 | RectType rtype = ComputeRectType(paint, *fMatrix, &strokeSize); |
mike@reedtribe.org | 7ff678b | 2011-04-04 14:38:12 +0000 | [diff] [blame] | 729 | |
reed@google.com | 5bff8d2 | 2011-04-04 14:47:09 +0000 | [diff] [blame] | 730 | #ifdef SK_DISABLE_FAST_AA_STROKE_RECT |
reed@google.com | 62ab7ad | 2011-04-05 14:08:25 +0000 | [diff] [blame] | 731 | if (kStroke_RectType == rtype && paint.isAntiAlias()) { |
mike@reedtribe.org | 7ff678b | 2011-04-04 14:38:12 +0000 | [diff] [blame] | 732 | rtype = kPath_RectType; |
| 733 | } |
reed@google.com | 62ab7ad | 2011-04-05 14:08:25 +0000 | [diff] [blame] | 734 | #endif |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 735 | |
mike@reedtribe.org | 7ff678b | 2011-04-04 14:38:12 +0000 | [diff] [blame] | 736 | if (kPath_RectType == rtype) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 737 | SkPath tmp; |
| 738 | tmp.addRect(rect); |
| 739 | tmp.setFillType(SkPath::kWinding_FillType); |
reed@android.com | 187d559 | 2009-07-08 14:03:56 +0000 | [diff] [blame] | 740 | this->drawPath(tmp, paint, NULL, true); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 741 | return; |
| 742 | } |
| 743 | |
| 744 | const SkMatrix& matrix = *fMatrix; |
| 745 | SkRect devRect; |
| 746 | |
| 747 | // transform rect into devRect |
reed@google.com | 7324415 | 2012-05-11 14:35:23 +0000 | [diff] [blame] | 748 | matrix.mapPoints(rect_points(devRect), rect_points(rect), 2); |
| 749 | devRect.sort(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 750 | |
| 751 | if (fBounder && !fBounder->doRect(devRect, paint)) { |
| 752 | return; |
| 753 | } |
| 754 | |
| 755 | // look for the quick exit, before we build a blitter |
reed@google.com | 7324415 | 2012-05-11 14:35:23 +0000 | [diff] [blame] | 756 | if (true) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 757 | SkIRect ir; |
| 758 | devRect.roundOut(&ir); |
reed@android.com | 55e76b2 | 2009-11-23 21:46:47 +0000 | [diff] [blame] | 759 | if (paint.getStyle() != SkPaint::kFill_Style) { |
| 760 | // extra space for hairlines |
| 761 | ir.inset(-1, -1); |
| 762 | } |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 763 | if (fRC->quickReject(ir)) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 764 | return; |
| 765 | } |
| 766 | |
| 767 | SkAutoBlitterChoose blitterStorage(*fBitmap, matrix, paint); |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 768 | const SkRasterClip& clip = *fRC; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 769 | SkBlitter* blitter = blitterStorage.get(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 770 | |
reed@android.com | b641c9f2 | 2010-03-25 14:31:46 +0000 | [diff] [blame] | 771 | // we want to "fill" if we are kFill or kStrokeAndFill, since in the latter |
| 772 | // case we are also hairline (if we've gotten to here), which devolves to |
| 773 | // effectively just kFill |
mike@reedtribe.org | 7ff678b | 2011-04-04 14:38:12 +0000 | [diff] [blame] | 774 | switch (rtype) { |
| 775 | case kFill_RectType: |
| 776 | if (paint.isAntiAlias()) { |
| 777 | SkScan::AntiFillRect(devRect, clip, blitter); |
| 778 | } else { |
| 779 | SkScan::FillRect(devRect, clip, blitter); |
| 780 | } |
| 781 | break; |
| 782 | case kStroke_RectType: |
| 783 | if (paint.isAntiAlias()) { |
reed@google.com | 761fb62 | 2011-04-04 18:58:05 +0000 | [diff] [blame] | 784 | SkScan::AntiFrameRect(devRect, strokeSize, clip, blitter); |
mike@reedtribe.org | 7ff678b | 2011-04-04 14:38:12 +0000 | [diff] [blame] | 785 | } else { |
reed@google.com | 761fb62 | 2011-04-04 18:58:05 +0000 | [diff] [blame] | 786 | SkScan::FrameRect(devRect, strokeSize, clip, blitter); |
mike@reedtribe.org | 7ff678b | 2011-04-04 14:38:12 +0000 | [diff] [blame] | 787 | } |
| 788 | break; |
| 789 | case kHair_RectType: |
| 790 | if (paint.isAntiAlias()) { |
| 791 | SkScan::AntiHairRect(devRect, clip, blitter); |
| 792 | } else { |
| 793 | SkScan::HairRect(devRect, clip, blitter); |
| 794 | } |
| 795 | break; |
| 796 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 797 | SkDEBUGFAIL("bad rtype"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 798 | } |
| 799 | } |
| 800 | |
| 801 | void SkDraw::drawDevMask(const SkMask& srcM, const SkPaint& paint) const { |
| 802 | if (srcM.fBounds.isEmpty()) { |
| 803 | return; |
| 804 | } |
| 805 | |
bungeman@google.com | 0a60b3d | 2011-09-26 19:09:08 +0000 | [diff] [blame] | 806 | const SkMask* mask = &srcM; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 807 | |
bungeman@google.com | 0a60b3d | 2011-09-26 19:09:08 +0000 | [diff] [blame] | 808 | SkMask dstM; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 809 | if (paint.getMaskFilter() && |
| 810 | paint.getMaskFilter()->filterMask(&dstM, srcM, *fMatrix, NULL)) { |
| 811 | mask = &dstM; |
bungeman@google.com | bf2ac7e | 2011-09-26 19:51:33 +0000 | [diff] [blame] | 812 | } else { |
| 813 | dstM.fImage = NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 814 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 815 | SkAutoMaskFreeImage ami(dstM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 816 | |
| 817 | if (fBounder && !fBounder->doIRect(mask->fBounds)) { |
| 818 | return; |
| 819 | } |
| 820 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 821 | SkAutoBlitterChoose blitterChooser(*fBitmap, *fMatrix, paint); |
| 822 | SkBlitter* blitter = blitterChooser.get(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 823 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 824 | SkAAClipBlitterWrapper wrapper; |
| 825 | const SkRegion* clipRgn; |
| 826 | |
| 827 | if (fRC->isBW()) { |
| 828 | clipRgn = &fRC->bwRgn(); |
| 829 | } else { |
| 830 | wrapper.init(*fRC, blitter); |
| 831 | clipRgn = &wrapper.getRgn(); |
| 832 | blitter = wrapper.getBlitter(); |
| 833 | } |
| 834 | blitter->blitMaskRegion(*mask, *clipRgn); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 835 | } |
| 836 | |
reed@android.com | ebdeeb8 | 2009-09-03 21:45:49 +0000 | [diff] [blame] | 837 | static SkScalar fast_len(const SkVector& vec) { |
| 838 | SkScalar x = SkScalarAbs(vec.fX); |
| 839 | SkScalar y = SkScalarAbs(vec.fY); |
| 840 | if (x < y) { |
| 841 | SkTSwap(x, y); |
| 842 | } |
| 843 | return x + SkScalarHalf(y); |
| 844 | } |
| 845 | |
reed@google.com | ecadf99 | 2011-09-19 19:18:18 +0000 | [diff] [blame] | 846 | static bool xfermodeSupportsCoverageAsAlpha(SkXfermode* xfer) { |
| 847 | SkXfermode::Coeff dc; |
| 848 | if (!SkXfermode::AsCoeff(xfer, NULL, &dc)) { |
| 849 | return false; |
| 850 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 851 | |
reed@google.com | ecadf99 | 2011-09-19 19:18:18 +0000 | [diff] [blame] | 852 | switch (dc) { |
| 853 | case SkXfermode::kOne_Coeff: |
| 854 | case SkXfermode::kISA_Coeff: |
| 855 | case SkXfermode::kISC_Coeff: |
| 856 | return true; |
| 857 | default: |
| 858 | return false; |
| 859 | } |
| 860 | } |
| 861 | |
| 862 | bool SkDrawTreatAsHairline(const SkPaint& paint, const SkMatrix& matrix, |
bsalomon@google.com | dd1be60 | 2012-01-18 20:34:00 +0000 | [diff] [blame] | 863 | SkScalar* coverage) { |
| 864 | SkASSERT(coverage); |
reed@google.com | ecadf99 | 2011-09-19 19:18:18 +0000 | [diff] [blame] | 865 | if (SkPaint::kStroke_Style != paint.getStyle()) { |
| 866 | return false; |
| 867 | } |
| 868 | SkScalar strokeWidth = paint.getStrokeWidth(); |
| 869 | if (0 == strokeWidth) { |
bsalomon@google.com | dd1be60 | 2012-01-18 20:34:00 +0000 | [diff] [blame] | 870 | *coverage = SK_Scalar1; |
reed@google.com | ecadf99 | 2011-09-19 19:18:18 +0000 | [diff] [blame] | 871 | return true; |
| 872 | } |
| 873 | |
| 874 | // if we get here, we need to try to fake a thick-stroke with a modulated |
| 875 | // hairline |
| 876 | |
| 877 | if (!paint.isAntiAlias()) { |
| 878 | return false; |
| 879 | } |
tomhudson@google.com | 8d43018 | 2011-06-06 19:11:19 +0000 | [diff] [blame] | 880 | if (matrix.hasPerspective()) { |
reed@android.com | ebdeeb8 | 2009-09-03 21:45:49 +0000 | [diff] [blame] | 881 | return false; |
| 882 | } |
reed@google.com | ecadf99 | 2011-09-19 19:18:18 +0000 | [diff] [blame] | 883 | |
reed@android.com | ebdeeb8 | 2009-09-03 21:45:49 +0000 | [diff] [blame] | 884 | SkVector src[2], dst[2]; |
reed@google.com | ecadf99 | 2011-09-19 19:18:18 +0000 | [diff] [blame] | 885 | src[0].set(strokeWidth, 0); |
| 886 | src[1].set(0, strokeWidth); |
reed@android.com | ebdeeb8 | 2009-09-03 21:45:49 +0000 | [diff] [blame] | 887 | matrix.mapVectors(dst, src, 2); |
| 888 | SkScalar len0 = fast_len(dst[0]); |
| 889 | SkScalar len1 = fast_len(dst[1]); |
agl@chromium.org | 652807b | 2010-04-27 15:47:34 +0000 | [diff] [blame] | 890 | if (len0 <= SK_Scalar1 && len1 <= SK_Scalar1) { |
bsalomon@google.com | dd1be60 | 2012-01-18 20:34:00 +0000 | [diff] [blame] | 891 | *coverage = SkScalarAve(len0, len1); |
reed@android.com | ebdeeb8 | 2009-09-03 21:45:49 +0000 | [diff] [blame] | 892 | return true; |
| 893 | } |
| 894 | return false; |
| 895 | } |
| 896 | |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 897 | void SkDraw::drawPath(const SkPath& origSrcPath, const SkPaint& origPaint, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 898 | const SkMatrix* prePathMatrix, bool pathIsMutable) const { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 899 | SkDEBUGCODE(this->validate();) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 900 | |
| 901 | // nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 902 | if (fRC->isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 903 | return; |
| 904 | } |
| 905 | |
| 906 | SkPath* pathPtr = (SkPath*)&origSrcPath; |
| 907 | bool doFill = true; |
| 908 | SkPath tmpPath; |
| 909 | SkMatrix tmpMatrix; |
| 910 | const SkMatrix* matrix = fMatrix; |
| 911 | |
| 912 | if (prePathMatrix) { |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 913 | if (origPaint.getPathEffect() || origPaint.getStyle() != SkPaint::kFill_Style || |
| 914 | origPaint.getRasterizer()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 915 | SkPath* result = pathPtr; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 916 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 917 | if (!pathIsMutable) { |
| 918 | result = &tmpPath; |
| 919 | pathIsMutable = true; |
| 920 | } |
| 921 | pathPtr->transform(*prePathMatrix, result); |
| 922 | pathPtr = result; |
| 923 | } else { |
| 924 | if (!tmpMatrix.setConcat(*matrix, *prePathMatrix)) { |
| 925 | // overflow |
| 926 | return; |
| 927 | } |
| 928 | matrix = &tmpMatrix; |
| 929 | } |
| 930 | } |
| 931 | // at this point we're done with prePathMatrix |
| 932 | SkDEBUGCODE(prePathMatrix = (const SkMatrix*)0x50FF8001;) |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 933 | |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 934 | const SkPaint* paint = &origPaint; |
| 935 | SkTLazy<SkPaint> lazyPaint; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 936 | |
reed@google.com | ecadf99 | 2011-09-19 19:18:18 +0000 | [diff] [blame] | 937 | { |
bsalomon@google.com | dd1be60 | 2012-01-18 20:34:00 +0000 | [diff] [blame] | 938 | SkScalar coverage; |
| 939 | if (SkDrawTreatAsHairline(origPaint, *matrix, &coverage)) { |
| 940 | if (SK_Scalar1 == coverage) { |
| 941 | lazyPaint.set(origPaint); |
| 942 | lazyPaint.get()->setStrokeWidth(0); |
| 943 | paint = lazyPaint.get(); |
| 944 | } else if (xfermodeSupportsCoverageAsAlpha(origPaint.getXfermode())) { |
| 945 | U8CPU newAlpha; |
| 946 | #if 0 |
| 947 | newAlpha = SkToU8(SkScalarRoundToInt(coverage * |
| 948 | origPaint.getAlpha())); |
| 949 | #else |
| 950 | // this is the old technique, which we preserve for now so |
| 951 | // we don't change previous results (testing) |
| 952 | // the new way seems fine, its just (a tiny bit) different |
| 953 | int scale = (int)SkScalarMul(coverage, 256); |
| 954 | newAlpha = origPaint.getAlpha() * scale >> 8; |
| 955 | #endif |
| 956 | lazyPaint.set(origPaint); |
| 957 | lazyPaint.get()->setStrokeWidth(0); |
| 958 | lazyPaint.get()->setAlpha(newAlpha); |
| 959 | paint = lazyPaint.get(); |
| 960 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 961 | } |
| 962 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 963 | |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 964 | if (paint->getPathEffect() || paint->getStyle() != SkPaint::kFill_Style) { |
| 965 | doFill = paint->getFillPath(*pathPtr, &tmpPath); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 966 | pathPtr = &tmpPath; |
| 967 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 968 | |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 969 | if (paint->getRasterizer()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 970 | SkMask mask; |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 971 | if (paint->getRasterizer()->rasterize(*pathPtr, *matrix, |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 972 | &fRC->getBounds(), paint->getMaskFilter(), &mask, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 973 | SkMask::kComputeBoundsAndRenderImage_CreateMode)) { |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 974 | this->drawDevMask(mask, *paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 975 | SkMask::FreeImage(mask.fImage); |
| 976 | } |
| 977 | return; |
| 978 | } |
| 979 | |
| 980 | // avoid possibly allocating a new path in transform if we can |
| 981 | SkPath* devPathPtr = pathIsMutable ? pathPtr : &tmpPath; |
| 982 | |
| 983 | // transform the path into device space |
| 984 | pathPtr->transform(*matrix, devPathPtr); |
| 985 | |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 986 | SkAutoBlitterChoose blitter(*fBitmap, *fMatrix, *paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 987 | |
junov@chromium.org | 2ac4ef5 | 2012-04-04 15:16:51 +0000 | [diff] [blame] | 988 | if (paint->getMaskFilter()) { |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 989 | SkPaint::Style style = doFill ? SkPaint::kFill_Style : |
junov@chromium.org | 2ac4ef5 | 2012-04-04 15:16:51 +0000 | [diff] [blame] | 990 | SkPaint::kStroke_Style; |
| 991 | if (paint->getMaskFilter()->filterPath(*devPathPtr, *fMatrix, *fRC, |
| 992 | fBounder, blitter.get(), |
| 993 | style)) { |
| 994 | return; // filterPath() called the blitter, so we're done |
| 995 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 996 | } |
| 997 | |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 998 | if (fBounder && !fBounder->doPath(*devPathPtr, *paint, doFill)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 999 | return; |
| 1000 | } |
| 1001 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1002 | void (*proc)(const SkPath&, const SkRasterClip&, SkBlitter*); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1003 | if (doFill) { |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 1004 | if (paint->isAntiAlias()) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1005 | proc = SkScan::AntiFillPath; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1006 | } else { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1007 | proc = SkScan::FillPath; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1008 | } |
| 1009 | } else { // hairline |
reed@google.com | 32e5d97 | 2011-07-27 18:25:57 +0000 | [diff] [blame] | 1010 | if (paint->isAntiAlias()) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1011 | proc = SkScan::AntiHairPath; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1012 | } else { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1013 | proc = SkScan::HairPath; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1014 | } |
| 1015 | } |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1016 | proc(*devPathPtr, *fRC, blitter.get()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1017 | } |
| 1018 | |
reed@android.com | 0baf193 | 2009-06-24 12:41:42 +0000 | [diff] [blame] | 1019 | /** For the purposes of drawing bitmaps, if a matrix is "almost" translate |
| 1020 | go ahead and treat it as if it were, so that subsequent code can go fast. |
| 1021 | */ |
| 1022 | static bool just_translate(const SkMatrix& matrix, const SkBitmap& bitmap) { |
| 1023 | SkMatrix::TypeMask mask = matrix.getType(); |
| 1024 | |
| 1025 | if (mask & (SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask)) { |
| 1026 | return false; |
| 1027 | } |
| 1028 | if (mask & SkMatrix::kScale_Mask) { |
| 1029 | SkScalar sx = matrix[SkMatrix::kMScaleX]; |
| 1030 | SkScalar sy = matrix[SkMatrix::kMScaleY]; |
| 1031 | int w = bitmap.width(); |
| 1032 | int h = bitmap.height(); |
| 1033 | int sw = SkScalarRound(SkScalarMul(sx, SkIntToScalar(w))); |
| 1034 | int sh = SkScalarRound(SkScalarMul(sy, SkIntToScalar(h))); |
| 1035 | return sw == w && sh == h; |
| 1036 | } |
| 1037 | // if we got here, we're either kTranslate_Mask or identity |
| 1038 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1039 | } |
| 1040 | |
| 1041 | void SkDraw::drawBitmapAsMask(const SkBitmap& bitmap, |
| 1042 | const SkPaint& paint) const { |
| 1043 | SkASSERT(bitmap.getConfig() == SkBitmap::kA8_Config); |
| 1044 | |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1045 | if (just_translate(*fMatrix, bitmap)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1046 | int ix = SkScalarRound(fMatrix->getTranslateX()); |
| 1047 | int iy = SkScalarRound(fMatrix->getTranslateY()); |
| 1048 | |
| 1049 | SkMask mask; |
| 1050 | mask.fBounds.set(ix, iy, ix + bitmap.width(), iy + bitmap.height()); |
| 1051 | mask.fFormat = SkMask::kA8_Format; |
| 1052 | mask.fRowBytes = bitmap.rowBytes(); |
| 1053 | mask.fImage = bitmap.getAddr8(0, 0); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1054 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1055 | this->drawDevMask(mask, paint); |
| 1056 | } else { // need to xform the bitmap first |
| 1057 | SkRect r; |
| 1058 | SkMask mask; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1059 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1060 | r.set(0, 0, |
| 1061 | SkIntToScalar(bitmap.width()), SkIntToScalar(bitmap.height())); |
| 1062 | fMatrix->mapRect(&r); |
| 1063 | r.round(&mask.fBounds); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1064 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1065 | // set the mask's bounds to the transformed bitmap-bounds, |
| 1066 | // clipped to the actual device |
| 1067 | { |
| 1068 | SkIRect devBounds; |
| 1069 | devBounds.set(0, 0, fBitmap->width(), fBitmap->height()); |
| 1070 | // need intersect(l, t, r, b) on irect |
| 1071 | if (!mask.fBounds.intersect(devBounds)) { |
| 1072 | return; |
| 1073 | } |
| 1074 | } |
reed@android.com | 543ed93 | 2009-04-24 12:43:40 +0000 | [diff] [blame] | 1075 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1076 | mask.fFormat = SkMask::kA8_Format; |
| 1077 | mask.fRowBytes = SkAlign4(mask.fBounds.width()); |
reed@android.com | 543ed93 | 2009-04-24 12:43:40 +0000 | [diff] [blame] | 1078 | size_t size = mask.computeImageSize(); |
| 1079 | if (0 == size) { |
| 1080 | // the mask is too big to allocated, draw nothing |
| 1081 | return; |
| 1082 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1083 | |
| 1084 | // allocate (and clear) our temp buffer to hold the transformed bitmap |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1085 | SkAutoMalloc storage(size); |
| 1086 | mask.fImage = (uint8_t*)storage.get(); |
| 1087 | memset(mask.fImage, 0, size); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1088 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1089 | // now draw our bitmap(src) into mask(dst), transformed by the matrix |
| 1090 | { |
| 1091 | SkBitmap device; |
| 1092 | device.setConfig(SkBitmap::kA8_Config, mask.fBounds.width(), |
| 1093 | mask.fBounds.height(), mask.fRowBytes); |
| 1094 | device.setPixels(mask.fImage); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1095 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1096 | SkCanvas c(device); |
| 1097 | // need the unclipped top/left for the translate |
| 1098 | c.translate(-SkIntToScalar(mask.fBounds.fLeft), |
| 1099 | -SkIntToScalar(mask.fBounds.fTop)); |
| 1100 | c.concat(*fMatrix); |
reed@android.com | 3469c76 | 2009-02-24 19:03:20 +0000 | [diff] [blame] | 1101 | |
| 1102 | // We can't call drawBitmap, or we'll infinitely recurse. Instead |
reed@android.com | fb12c3e | 2009-03-05 20:43:42 +0000 | [diff] [blame] | 1103 | // we manually build a shader and draw that into our new mask |
reed@android.com | 3469c76 | 2009-02-24 19:03:20 +0000 | [diff] [blame] | 1104 | SkPaint tmpPaint; |
| 1105 | tmpPaint.setFlags(paint.getFlags()); |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1106 | SkAutoBitmapShaderInstall install(bitmap, tmpPaint); |
reed@android.com | 3469c76 | 2009-02-24 19:03:20 +0000 | [diff] [blame] | 1107 | SkRect rr; |
| 1108 | rr.set(0, 0, SkIntToScalar(bitmap.width()), |
| 1109 | SkIntToScalar(bitmap.height())); |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1110 | c.drawRect(rr, install.paintWithShader()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1111 | } |
| 1112 | this->drawDevMask(mask, paint); |
| 1113 | } |
| 1114 | } |
| 1115 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1116 | static bool clipped_out(const SkMatrix& m, const SkRasterClip& c, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1117 | const SkRect& srcR) { |
| 1118 | SkRect dstR; |
| 1119 | SkIRect devIR; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1120 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1121 | m.mapRect(&dstR, srcR); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1122 | dstR.roundOut(&devIR); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1123 | return c.quickReject(devIR); |
| 1124 | } |
| 1125 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1126 | static bool clipped_out(const SkMatrix& matrix, const SkRasterClip& clip, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1127 | int width, int height) { |
| 1128 | SkRect r; |
| 1129 | r.set(0, 0, SkIntToScalar(width), SkIntToScalar(height)); |
| 1130 | return clipped_out(matrix, clip, r); |
| 1131 | } |
| 1132 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1133 | static bool clipHandlesSprite(const SkRasterClip& clip, int x, int y, |
| 1134 | const SkBitmap& bitmap) { |
| 1135 | return clip.isBW() || |
| 1136 | clip.quickContains(x, y, x + bitmap.width(), y + bitmap.height()); |
| 1137 | } |
| 1138 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1139 | void SkDraw::drawBitmap(const SkBitmap& bitmap, const SkMatrix& prematrix, |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1140 | const SkPaint& origPaint) const { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1141 | SkDEBUGCODE(this->validate();) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1142 | |
| 1143 | // nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1144 | if (fRC->isEmpty() || |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1145 | bitmap.width() == 0 || bitmap.height() == 0 || |
reed@google.com | dcd0f3a | 2011-10-04 01:17:15 +0000 | [diff] [blame] | 1146 | bitmap.getConfig() == SkBitmap::kNo_Config) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1147 | return; |
| 1148 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1149 | |
| 1150 | #ifndef SK_ALLOW_OVER_32K_BITMAPS |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1151 | // run away on too-big bitmaps for now (exceed 16.16) |
| 1152 | if (bitmap.width() > 32767 || bitmap.height() > 32767) { |
| 1153 | return; |
| 1154 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1155 | #endif |
| 1156 | |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1157 | SkPaint paint(origPaint); |
| 1158 | paint.setStyle(SkPaint::kFill_Style); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1159 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1160 | SkMatrix matrix; |
| 1161 | if (!matrix.setConcat(*fMatrix, prematrix)) { |
| 1162 | return; |
| 1163 | } |
| 1164 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1165 | if (clipped_out(matrix, *fRC, bitmap.width(), bitmap.height())) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1166 | return; |
| 1167 | } |
| 1168 | |
reed@android.com | 218521e | 2010-02-09 13:06:29 +0000 | [diff] [blame] | 1169 | if (fBounder && just_translate(matrix, bitmap)) { |
| 1170 | SkIRect ir; |
| 1171 | int32_t ix = SkScalarRound(matrix.getTranslateX()); |
| 1172 | int32_t iy = SkScalarRound(matrix.getTranslateY()); |
| 1173 | ir.set(ix, iy, ix + bitmap.width(), iy + bitmap.height()); |
| 1174 | if (!fBounder->doIRect(ir)) { |
| 1175 | return; |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | // only lock the pixels if we passed the clip and bounder tests |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1180 | SkAutoLockPixels alp(bitmap); |
| 1181 | // after the lock, check if we are valid |
| 1182 | if (!bitmap.readyToDraw()) { |
| 1183 | return; |
| 1184 | } |
| 1185 | |
reed@android.com | 0baf193 | 2009-06-24 12:41:42 +0000 | [diff] [blame] | 1186 | if (bitmap.getConfig() != SkBitmap::kA8_Config && |
| 1187 | just_translate(matrix, bitmap)) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1188 | int ix = SkScalarRound(matrix.getTranslateX()); |
| 1189 | int iy = SkScalarRound(matrix.getTranslateY()); |
| 1190 | if (clipHandlesSprite(*fRC, ix, iy, bitmap)) { |
| 1191 | uint32_t storage[kBlitterStorageLongCount]; |
| 1192 | SkBlitter* blitter = SkBlitter::ChooseSprite(*fBitmap, paint, bitmap, |
| 1193 | ix, iy, storage, sizeof(storage)); |
| 1194 | if (blitter) { |
| 1195 | SkAutoTPlacementDelete<SkBlitter> ad(blitter, storage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1196 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1197 | SkIRect ir; |
| 1198 | ir.set(ix, iy, ix + bitmap.width(), iy + bitmap.height()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1199 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1200 | SkScan::FillIRect(ir, *fRC, blitter); |
| 1201 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1202 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1203 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1204 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1205 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1206 | // now make a temp draw on the stack, and use it |
| 1207 | // |
| 1208 | SkDraw draw(*this); |
| 1209 | draw.fMatrix = &matrix; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1210 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1211 | if (bitmap.getConfig() == SkBitmap::kA8_Config) { |
| 1212 | draw.drawBitmapAsMask(bitmap, paint); |
| 1213 | } else { |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1214 | SkAutoBitmapShaderInstall install(bitmap, paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1215 | |
| 1216 | SkRect r; |
| 1217 | r.set(0, 0, SkIntToScalar(bitmap.width()), |
| 1218 | SkIntToScalar(bitmap.height())); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1219 | // is this ok if paint has a rasterizer? |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1220 | draw.drawRect(r, install.paintWithShader()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1221 | } |
| 1222 | } |
| 1223 | |
| 1224 | void SkDraw::drawSprite(const SkBitmap& bitmap, int x, int y, |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1225 | const SkPaint& origPaint) const { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1226 | SkDEBUGCODE(this->validate();) |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1227 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1228 | // nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1229 | if (fRC->isEmpty() || |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1230 | bitmap.width() == 0 || bitmap.height() == 0 || |
reed@google.com | dcd0f3a | 2011-10-04 01:17:15 +0000 | [diff] [blame] | 1231 | bitmap.getConfig() == SkBitmap::kNo_Config) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1232 | return; |
| 1233 | } |
| 1234 | |
| 1235 | SkIRect bounds; |
| 1236 | bounds.set(x, y, x + bitmap.width(), y + bitmap.height()); |
| 1237 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1238 | if (fRC->quickReject(bounds)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1239 | return; // nothing to draw |
| 1240 | } |
| 1241 | |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1242 | SkPaint paint(origPaint); |
| 1243 | paint.setStyle(SkPaint::kFill_Style); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1244 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1245 | if (NULL == paint.getColorFilter() && clipHandlesSprite(*fRC, x, y, bitmap)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1246 | uint32_t storage[kBlitterStorageLongCount]; |
| 1247 | SkBlitter* blitter = SkBlitter::ChooseSprite(*fBitmap, paint, bitmap, |
| 1248 | x, y, storage, sizeof(storage)); |
| 1249 | |
| 1250 | if (blitter) { |
| 1251 | SkAutoTPlacementDelete<SkBlitter> ad(blitter, storage); |
| 1252 | |
| 1253 | if (fBounder && !fBounder->doIRect(bounds)) { |
| 1254 | return; |
| 1255 | } |
| 1256 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1257 | SkScan::FillIRect(bounds, *fRC, blitter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1258 | return; |
| 1259 | } |
| 1260 | } |
| 1261 | |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1262 | SkAutoBitmapShaderInstall install(bitmap, paint); |
| 1263 | const SkPaint& shaderPaint = install.paintWithShader(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1264 | |
| 1265 | SkMatrix matrix; |
| 1266 | SkRect r; |
| 1267 | |
| 1268 | // get a scalar version of our rect |
| 1269 | r.set(bounds); |
| 1270 | |
| 1271 | // tell the shader our offset |
| 1272 | matrix.setTranslate(r.fLeft, r.fTop); |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1273 | shaderPaint.getShader()->setLocalMatrix(matrix); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1274 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1275 | SkDraw draw(*this); |
| 1276 | matrix.reset(); |
| 1277 | draw.fMatrix = &matrix; |
| 1278 | // call ourself with a rect |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1279 | // is this OK if paint has a rasterizer? |
reed@google.com | 40c2ba2 | 2011-07-25 19:41:22 +0000 | [diff] [blame] | 1280 | draw.drawRect(r, shaderPaint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1281 | } |
| 1282 | |
| 1283 | /////////////////////////////////////////////////////////////////////////////// |
| 1284 | |
| 1285 | #include "SkScalerContext.h" |
| 1286 | #include "SkGlyphCache.h" |
reed@google.com | e691376 | 2012-08-07 15:19:47 +0000 | [diff] [blame] | 1287 | #include "SkTextToPathIter.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1288 | #include "SkUtils.h" |
| 1289 | |
| 1290 | static void measure_text(SkGlyphCache* cache, SkDrawCacheProc glyphCacheProc, |
| 1291 | const char text[], size_t byteLength, SkVector* stopVector) { |
| 1292 | SkFixed x = 0, y = 0; |
| 1293 | const char* stop = text + byteLength; |
| 1294 | |
| 1295 | SkAutoKern autokern; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1296 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1297 | while (text < stop) { |
| 1298 | // don't need x, y here, since all subpixel variants will have the |
| 1299 | // same advance |
| 1300 | const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
| 1301 | |
| 1302 | x += autokern.adjust(glyph) + glyph.fAdvanceX; |
| 1303 | y += glyph.fAdvanceY; |
| 1304 | } |
| 1305 | stopVector->set(SkFixedToScalar(x), SkFixedToScalar(y)); |
| 1306 | |
| 1307 | SkASSERT(text == stop); |
| 1308 | } |
| 1309 | |
| 1310 | void SkDraw::drawText_asPaths(const char text[], size_t byteLength, |
| 1311 | SkScalar x, SkScalar y, |
| 1312 | const SkPaint& paint) const { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1313 | SkDEBUGCODE(this->validate();) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1314 | |
djsollen@google.com | 166e653 | 2012-03-20 14:24:38 +0000 | [diff] [blame] | 1315 | SkTextToPathIter iter(text, byteLength, paint, true); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1316 | |
| 1317 | SkMatrix matrix; |
| 1318 | matrix.setScale(iter.getPathScale(), iter.getPathScale()); |
| 1319 | matrix.postTranslate(x, y); |
| 1320 | |
| 1321 | const SkPath* iterPath; |
| 1322 | SkScalar xpos, prevXPos = 0; |
| 1323 | |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 1324 | while (iter.next(&iterPath, &xpos)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1325 | matrix.postTranslate(xpos - prevXPos, 0); |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 1326 | if (iterPath) { |
| 1327 | const SkPaint& pnt = iter.getPaint(); |
| 1328 | if (fDevice) { |
| 1329 | fDevice->drawPath(*this, *iterPath, pnt, &matrix, false); |
| 1330 | } else { |
| 1331 | this->drawPath(*iterPath, pnt, &matrix, false); |
| 1332 | } |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1333 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1334 | prevXPos = xpos; |
| 1335 | } |
| 1336 | } |
| 1337 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1338 | // disable warning : local variable used without having been initialized |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1339 | #if defined _WIN32 && _MSC_VER >= 1300 |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1340 | #pragma warning ( push ) |
| 1341 | #pragma warning ( disable : 4701 ) |
| 1342 | #endif |
| 1343 | |
| 1344 | ////////////////////////////////////////////////////////////////////////////// |
| 1345 | |
| 1346 | static void D1G_NoBounder_RectClip(const SkDraw1Glyph& state, |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1347 | SkFixed fx, SkFixed fy, |
| 1348 | const SkGlyph& glyph) { |
| 1349 | int left = SkFixedFloor(fx); |
| 1350 | int top = SkFixedFloor(fy); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1351 | SkASSERT(glyph.fWidth > 0 && glyph.fHeight > 0); |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1352 | SkASSERT(NULL == state.fBounder); |
| 1353 | SkASSERT((NULL == state.fClip && state.fAAClip) || |
| 1354 | (state.fClip && NULL == state.fAAClip && state.fClip->isRect())); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1355 | |
| 1356 | left += glyph.fLeft; |
| 1357 | top += glyph.fTop; |
| 1358 | |
| 1359 | int right = left + glyph.fWidth; |
| 1360 | int bottom = top + glyph.fHeight; |
| 1361 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1362 | SkMask mask; |
| 1363 | SkIRect storage; |
| 1364 | SkIRect* bounds = &mask.fBounds; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1365 | |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1366 | mask.fBounds.set(left, top, right, bottom); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1367 | |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1368 | // this extra test is worth it, assuming that most of the time it succeeds |
| 1369 | // since we can avoid writing to storage |
| 1370 | if (!state.fClipBounds.containsNoEmptyCheck(left, top, right, bottom)) { |
| 1371 | if (!storage.intersectNoEmptyCheck(mask.fBounds, state.fClipBounds)) |
| 1372 | return; |
| 1373 | bounds = &storage; |
| 1374 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1375 | |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1376 | uint8_t* aa = (uint8_t*)glyph.fImage; |
| 1377 | if (NULL == aa) { |
| 1378 | aa = (uint8_t*)state.fCache->findImage(glyph); |
| 1379 | if (NULL == aa) { |
| 1380 | return; // can't rasterize glyph |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1381 | } |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1382 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1383 | |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1384 | mask.fRowBytes = glyph.rowBytes(); |
| 1385 | mask.fFormat = static_cast<SkMask::Format>(glyph.fMaskFormat); |
| 1386 | mask.fImage = aa; |
| 1387 | state.fBlitter->blitMask(mask, *bounds); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1388 | } |
| 1389 | |
| 1390 | static void D1G_NoBounder_RgnClip(const SkDraw1Glyph& state, |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1391 | SkFixed fx, SkFixed fy, |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1392 | const SkGlyph& glyph) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1393 | int left = SkFixedFloor(fx); |
| 1394 | int top = SkFixedFloor(fy); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1395 | SkASSERT(glyph.fWidth > 0 && glyph.fHeight > 0); |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1396 | SkASSERT(!state.fClip->isRect()); |
| 1397 | SkASSERT(NULL == state.fBounder); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1398 | |
| 1399 | SkMask mask; |
| 1400 | |
| 1401 | left += glyph.fLeft; |
| 1402 | top += glyph.fTop; |
| 1403 | |
| 1404 | mask.fBounds.set(left, top, left + glyph.fWidth, top + glyph.fHeight); |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1405 | SkRegion::Cliperator clipper(*state.fClip, mask.fBounds); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1406 | |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1407 | if (!clipper.done()) { |
| 1408 | const SkIRect& cr = clipper.rect(); |
| 1409 | const uint8_t* aa = (const uint8_t*)glyph.fImage; |
| 1410 | if (NULL == aa) { |
| 1411 | aa = (uint8_t*)state.fCache->findImage(glyph); |
| 1412 | if (NULL == aa) { |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1413 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1414 | } |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1415 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1416 | |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1417 | mask.fRowBytes = glyph.rowBytes(); |
| 1418 | mask.fFormat = static_cast<SkMask::Format>(glyph.fMaskFormat); |
| 1419 | mask.fImage = (uint8_t*)aa; |
| 1420 | do { |
| 1421 | state.fBlitter->blitMask(mask, cr); |
| 1422 | clipper.next(); |
| 1423 | } while (!clipper.done()); |
| 1424 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1425 | } |
| 1426 | |
| 1427 | static void D1G_Bounder(const SkDraw1Glyph& state, |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1428 | SkFixed fx, SkFixed fy, |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1429 | const SkGlyph& glyph) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1430 | int left = SkFixedFloor(fx); |
| 1431 | int top = SkFixedFloor(fy); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1432 | SkASSERT(glyph.fWidth > 0 && glyph.fHeight > 0); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1433 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1434 | SkMask mask; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1435 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1436 | left += glyph.fLeft; |
| 1437 | top += glyph.fTop; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1438 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1439 | mask.fBounds.set(left, top, left + glyph.fWidth, top + glyph.fHeight); |
| 1440 | SkRegion::Cliperator clipper(*state.fClip, mask.fBounds); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1441 | |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1442 | if (!clipper.done()) { |
| 1443 | const SkIRect& cr = clipper.rect(); |
| 1444 | const uint8_t* aa = (const uint8_t*)glyph.fImage; |
| 1445 | if (NULL == aa) { |
| 1446 | aa = (uint8_t*)state.fCache->findImage(glyph); |
| 1447 | if (NULL == aa) { |
| 1448 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1449 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1450 | } |
| 1451 | |
reed@android.com | d055c1f | 2010-03-01 14:54:05 +0000 | [diff] [blame] | 1452 | // we need to pass the origin, which we approximate with our |
| 1453 | // (unadjusted) left,top coordinates (the caller called fixedfloor) |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1454 | if (state.fBounder->doIRectGlyph(cr, |
reed@android.com | d055c1f | 2010-03-01 14:54:05 +0000 | [diff] [blame] | 1455 | left - glyph.fLeft, |
| 1456 | top - glyph.fTop, glyph)) { |
tomhudson@google.com | 83a4446 | 2011-10-27 15:27:51 +0000 | [diff] [blame] | 1457 | mask.fRowBytes = glyph.rowBytes(); |
| 1458 | mask.fFormat = static_cast<SkMask::Format>(glyph.fMaskFormat); |
| 1459 | mask.fImage = (uint8_t*)aa; |
| 1460 | do { |
| 1461 | state.fBlitter->blitMask(mask, cr); |
| 1462 | clipper.next(); |
| 1463 | } while (!clipper.done()); |
| 1464 | } |
| 1465 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1466 | } |
| 1467 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1468 | static void D1G_Bounder_AAClip(const SkDraw1Glyph& state, |
| 1469 | SkFixed fx, SkFixed fy, |
| 1470 | const SkGlyph& glyph) { |
| 1471 | int left = SkFixedFloor(fx); |
| 1472 | int top = SkFixedFloor(fy); |
| 1473 | SkIRect bounds; |
| 1474 | bounds.set(left, top, left + glyph.fWidth, top + glyph.fHeight); |
| 1475 | |
| 1476 | if (state.fBounder->doIRectGlyph(bounds, left, top, glyph)) { |
| 1477 | D1G_NoBounder_RectClip(state, fx, fy, glyph); |
| 1478 | } |
| 1479 | } |
| 1480 | |
reed@google.com | fd4236e | 2011-07-25 21:16:22 +0000 | [diff] [blame] | 1481 | static bool hasCustomD1GProc(const SkDraw& draw) { |
| 1482 | return draw.fProcs && draw.fProcs->fD1GProc; |
| 1483 | } |
| 1484 | |
| 1485 | static bool needsRasterTextBlit(const SkDraw& draw) { |
| 1486 | return !hasCustomD1GProc(draw); |
| 1487 | } |
| 1488 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1489 | SkDraw1Glyph::Proc SkDraw1Glyph::init(const SkDraw* draw, SkBlitter* blitter, |
| 1490 | SkGlyphCache* cache) { |
| 1491 | fDraw = draw; |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 1492 | fBounder = draw->fBounder; |
| 1493 | fBlitter = blitter; |
| 1494 | fCache = cache; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1495 | |
reed@google.com | 1d6ee0b | 2011-07-05 17:44:56 +0000 | [diff] [blame] | 1496 | if (hasCustomD1GProc(*draw)) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1497 | // todo: fix this assumption about clips w/ custom |
| 1498 | fClip = draw->fClip; |
| 1499 | fClipBounds = fClip->getBounds(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1500 | return draw->fProcs->fD1GProc; |
| 1501 | } |
| 1502 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1503 | if (draw->fRC->isBW()) { |
| 1504 | fAAClip = NULL; |
| 1505 | fClip = &draw->fRC->bwRgn(); |
| 1506 | fClipBounds = fClip->getBounds(); |
| 1507 | if (NULL == fBounder) { |
| 1508 | if (fClip->isRect()) { |
| 1509 | return D1G_NoBounder_RectClip; |
| 1510 | } else { |
| 1511 | return D1G_NoBounder_RgnClip; |
| 1512 | } |
| 1513 | } else { |
| 1514 | return D1G_Bounder; |
| 1515 | } |
| 1516 | } else { // aaclip |
| 1517 | fAAClip = &draw->fRC->aaRgn(); |
| 1518 | fClip = NULL; |
| 1519 | fClipBounds = fAAClip->getBounds(); |
| 1520 | if (NULL == fBounder) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1521 | return D1G_NoBounder_RectClip; |
| 1522 | } else { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1523 | return D1G_Bounder_AAClip; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1524 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1525 | } |
| 1526 | } |
| 1527 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1528 | /////////////////////////////////////////////////////////////////////////////// |
| 1529 | |
| 1530 | void SkDraw::drawText(const char text[], size_t byteLength, |
| 1531 | SkScalar x, SkScalar y, const SkPaint& paint) const { |
| 1532 | SkASSERT(byteLength == 0 || text != NULL); |
| 1533 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1534 | SkDEBUGCODE(this->validate();) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1535 | |
| 1536 | // nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1537 | if (text == NULL || byteLength == 0 || fRC->isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1538 | return; |
| 1539 | } |
| 1540 | |
bsalomon@google.com | 36d6eda | 2012-10-10 16:12:14 +0000 | [diff] [blame] | 1541 | // SkScalarRec doesn't currently have a way of representing hairline stroke and |
| 1542 | // will fill if its frame-width is 0. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1543 | if (/*paint.isLinearText() ||*/ |
skia.committer@gmail.com | fc84359 | 2012-10-11 02:01:14 +0000 | [diff] [blame^] | 1544 | (fMatrix->hasPerspective()) || |
bsalomon@google.com | 36d6eda | 2012-10-10 16:12:14 +0000 | [diff] [blame] | 1545 | (0 == paint.getStrokeWidth() && SkPaint::kStroke_Style == paint.getStyle())) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1546 | this->drawText_asPaths(text, byteLength, x, y, paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1547 | return; |
| 1548 | } |
| 1549 | |
| 1550 | SkDrawCacheProc glyphCacheProc = paint.getDrawCacheProc(); |
| 1551 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1552 | const SkMatrix* matrix = fMatrix; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1553 | |
| 1554 | SkAutoGlyphCache autoCache(paint, matrix); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1555 | SkGlyphCache* cache = autoCache.getCache(); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1556 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1557 | // transform our starting point |
| 1558 | { |
| 1559 | SkPoint loc; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1560 | matrix->mapXY(x, y, &loc); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1561 | x = loc.fX; |
| 1562 | y = loc.fY; |
| 1563 | } |
| 1564 | |
| 1565 | // need to measure first |
| 1566 | if (paint.getTextAlign() != SkPaint::kLeft_Align) { |
| 1567 | SkVector stop; |
| 1568 | |
| 1569 | measure_text(cache, glyphCacheProc, text, byteLength, &stop); |
| 1570 | |
| 1571 | SkScalar stopX = stop.fX; |
| 1572 | SkScalar stopY = stop.fY; |
| 1573 | |
| 1574 | if (paint.getTextAlign() == SkPaint::kCenter_Align) { |
| 1575 | stopX = SkScalarHalf(stopX); |
| 1576 | stopY = SkScalarHalf(stopY); |
| 1577 | } |
| 1578 | x -= stopX; |
| 1579 | y -= stopY; |
| 1580 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1581 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1582 | SkFixed fx = SkScalarToFixed(x); |
| 1583 | SkFixed fy = SkScalarToFixed(y); |
| 1584 | const char* stop = text + byteLength; |
| 1585 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1586 | SkFixed fxMask = ~0; |
| 1587 | SkFixed fyMask = ~0; |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 1588 | if (cache->isSubpixel()) { |
reed@google.com | cb6ccdd | 2011-08-23 21:30:47 +0000 | [diff] [blame] | 1589 | SkAxisAlignment baseline = SkComputeAxisAlignmentForHText(*matrix); |
| 1590 | if (kX_SkAxisAlignment == baseline) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1591 | fyMask = 0; |
reed@google.com | cb6ccdd | 2011-08-23 21:30:47 +0000 | [diff] [blame] | 1592 | } else if (kY_SkAxisAlignment == baseline) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1593 | fxMask = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1594 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1595 | |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 1596 | // apply bias here to avoid adding 1/2 the sampling frequency in the loop |
| 1597 | fx += SK_FixedHalf >> SkGlyph::kSubBits; |
| 1598 | fy += SK_FixedHalf >> SkGlyph::kSubBits; |
| 1599 | } else { |
| 1600 | fx += SK_FixedHalf; |
| 1601 | fy += SK_FixedHalf; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1602 | } |
| 1603 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1604 | SkAAClipBlitter aaBlitter; |
| 1605 | SkAutoBlitterChoose blitterChooser; |
| 1606 | SkBlitter* blitter = NULL; |
reed@google.com | 1d6ee0b | 2011-07-05 17:44:56 +0000 | [diff] [blame] | 1607 | if (needsRasterTextBlit(*this)) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1608 | blitterChooser.choose(*fBitmap, *matrix, paint); |
| 1609 | blitter = blitterChooser.get(); |
| 1610 | if (fRC->isAA()) { |
| 1611 | aaBlitter.init(blitter, &fRC->aaRgn()); |
| 1612 | blitter = &aaBlitter; |
| 1613 | } |
reed@google.com | 1d6ee0b | 2011-07-05 17:44:56 +0000 | [diff] [blame] | 1614 | } |
| 1615 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1616 | SkAutoKern autokern; |
bungeman@google.com | 52c748b | 2011-08-22 21:30:43 +0000 | [diff] [blame] | 1617 | SkDraw1Glyph d1g; |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1618 | SkDraw1Glyph::Proc proc = d1g.init(this, blitter, cache); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1619 | |
| 1620 | while (text < stop) { |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 1621 | const SkGlyph& glyph = glyphCacheProc(cache, &text, fx & fxMask, fy & fyMask); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1622 | |
| 1623 | fx += autokern.adjust(glyph); |
| 1624 | |
| 1625 | if (glyph.fWidth) { |
bungeman@google.com | 52c748b | 2011-08-22 21:30:43 +0000 | [diff] [blame] | 1626 | proc(d1g, fx, fy, glyph); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1627 | } |
| 1628 | fx += glyph.fAdvanceX; |
| 1629 | fy += glyph.fAdvanceY; |
| 1630 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1631 | } |
| 1632 | |
| 1633 | // last parameter is interpreted as SkFixed [x, y] |
| 1634 | // return the fixed position, which may be rounded or not by the caller |
| 1635 | // e.g. subpixel doesn't round |
| 1636 | typedef void (*AlignProc)(const SkPoint&, const SkGlyph&, SkIPoint*); |
| 1637 | |
| 1638 | static void leftAlignProc(const SkPoint& loc, const SkGlyph& glyph, |
| 1639 | SkIPoint* dst) { |
| 1640 | dst->set(SkScalarToFixed(loc.fX), SkScalarToFixed(loc.fY)); |
| 1641 | } |
| 1642 | |
| 1643 | static void centerAlignProc(const SkPoint& loc, const SkGlyph& glyph, |
| 1644 | SkIPoint* dst) { |
| 1645 | dst->set(SkScalarToFixed(loc.fX) - (glyph.fAdvanceX >> 1), |
| 1646 | SkScalarToFixed(loc.fY) - (glyph.fAdvanceY >> 1)); |
| 1647 | } |
| 1648 | |
| 1649 | static void rightAlignProc(const SkPoint& loc, const SkGlyph& glyph, |
| 1650 | SkIPoint* dst) { |
| 1651 | dst->set(SkScalarToFixed(loc.fX) - glyph.fAdvanceX, |
| 1652 | SkScalarToFixed(loc.fY) - glyph.fAdvanceY); |
| 1653 | } |
| 1654 | |
| 1655 | static AlignProc pick_align_proc(SkPaint::Align align) { |
| 1656 | static const AlignProc gProcs[] = { |
| 1657 | leftAlignProc, centerAlignProc, rightAlignProc |
| 1658 | }; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1659 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1660 | SkASSERT((unsigned)align < SK_ARRAY_COUNT(gProcs)); |
| 1661 | |
| 1662 | return gProcs[align]; |
| 1663 | } |
| 1664 | |
| 1665 | class TextMapState { |
| 1666 | public: |
| 1667 | mutable SkPoint fLoc; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1668 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1669 | TextMapState(const SkMatrix& matrix, SkScalar y) |
| 1670 | : fMatrix(matrix), fProc(matrix.getMapXYProc()), fY(y) {} |
| 1671 | |
| 1672 | typedef void (*Proc)(const TextMapState&, const SkScalar pos[]); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1673 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1674 | Proc pickProc(int scalarsPerPosition); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1675 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1676 | private: |
| 1677 | const SkMatrix& fMatrix; |
| 1678 | SkMatrix::MapXYProc fProc; |
| 1679 | SkScalar fY; // ignored by MapXYProc |
| 1680 | // these are only used by Only... procs |
| 1681 | SkScalar fScaleX, fTransX, fTransformedY; |
| 1682 | |
| 1683 | static void MapXProc(const TextMapState& state, const SkScalar pos[]) { |
| 1684 | state.fProc(state.fMatrix, *pos, state.fY, &state.fLoc); |
| 1685 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1686 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1687 | static void MapXYProc(const TextMapState& state, const SkScalar pos[]) { |
| 1688 | state.fProc(state.fMatrix, pos[0], pos[1], &state.fLoc); |
| 1689 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1690 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1691 | static void MapOnlyScaleXProc(const TextMapState& state, |
| 1692 | const SkScalar pos[]) { |
| 1693 | state.fLoc.set(SkScalarMul(state.fScaleX, *pos) + state.fTransX, |
| 1694 | state.fTransformedY); |
| 1695 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1696 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1697 | static void MapOnlyTransXProc(const TextMapState& state, |
| 1698 | const SkScalar pos[]) { |
| 1699 | state.fLoc.set(*pos + state.fTransX, state.fTransformedY); |
| 1700 | } |
| 1701 | }; |
| 1702 | |
| 1703 | TextMapState::Proc TextMapState::pickProc(int scalarsPerPosition) { |
| 1704 | SkASSERT(1 == scalarsPerPosition || 2 == scalarsPerPosition); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1705 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1706 | if (1 == scalarsPerPosition) { |
| 1707 | unsigned mtype = fMatrix.getType(); |
| 1708 | if (mtype & (SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask)) { |
| 1709 | return MapXProc; |
| 1710 | } else { |
| 1711 | fScaleX = fMatrix.getScaleX(); |
| 1712 | fTransX = fMatrix.getTranslateX(); |
| 1713 | fTransformedY = SkScalarMul(fY, fMatrix.getScaleY()) + |
| 1714 | fMatrix.getTranslateY(); |
| 1715 | return (mtype & SkMatrix::kScale_Mask) ? |
| 1716 | MapOnlyScaleXProc : MapOnlyTransXProc; |
| 1717 | } |
| 1718 | } else { |
| 1719 | return MapXYProc; |
| 1720 | } |
| 1721 | } |
| 1722 | |
| 1723 | ////////////////////////////////////////////////////////////////////////////// |
| 1724 | |
| 1725 | void SkDraw::drawPosText(const char text[], size_t byteLength, |
| 1726 | const SkScalar pos[], SkScalar constY, |
| 1727 | int scalarsPerPosition, const SkPaint& paint) const { |
| 1728 | SkASSERT(byteLength == 0 || text != NULL); |
| 1729 | SkASSERT(1 == scalarsPerPosition || 2 == scalarsPerPosition); |
| 1730 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1731 | SkDEBUGCODE(this->validate();) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1732 | |
| 1733 | // nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1734 | if (text == NULL || byteLength == 0 || fRC->isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1735 | return; |
| 1736 | } |
| 1737 | |
| 1738 | if (/*paint.isLinearText() ||*/ |
tomhudson@google.com | 8d43018 | 2011-06-06 19:11:19 +0000 | [diff] [blame] | 1739 | (fMatrix->hasPerspective())) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1740 | // TODO !!!! |
| 1741 | // this->drawText_asPaths(text, byteLength, x, y, paint); |
| 1742 | return; |
| 1743 | } |
| 1744 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1745 | const SkMatrix* matrix = fMatrix; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1746 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1747 | SkDrawCacheProc glyphCacheProc = paint.getDrawCacheProc(); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1748 | SkAutoGlyphCache autoCache(paint, matrix); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1749 | SkGlyphCache* cache = autoCache.getCache(); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1750 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1751 | SkAAClipBlitterWrapper wrapper; |
| 1752 | SkAutoBlitterChoose blitterChooser; |
| 1753 | SkBlitter* blitter = NULL; |
reed@google.com | 1d6ee0b | 2011-07-05 17:44:56 +0000 | [diff] [blame] | 1754 | if (needsRasterTextBlit(*this)) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1755 | blitterChooser.choose(*fBitmap, *matrix, paint); |
| 1756 | blitter = blitterChooser.get(); |
| 1757 | if (fRC->isAA()) { |
| 1758 | wrapper.init(*fRC, blitter); |
| 1759 | blitter = wrapper.getBlitter(); |
| 1760 | } |
reed@google.com | 1d6ee0b | 2011-07-05 17:44:56 +0000 | [diff] [blame] | 1761 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1762 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1763 | const char* stop = text + byteLength; |
| 1764 | AlignProc alignProc = pick_align_proc(paint.getTextAlign()); |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 1765 | SkDraw1Glyph d1g; |
| 1766 | SkDraw1Glyph::Proc proc = d1g.init(this, blitter, cache); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1767 | TextMapState tms(*matrix, constY); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1768 | TextMapState::Proc tmsProc = tms.pickProc(scalarsPerPosition); |
| 1769 | |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 1770 | if (cache->isSubpixel()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1771 | // maybe we should skip the rounding if linearText is set |
reed@google.com | cb6ccdd | 2011-08-23 21:30:47 +0000 | [diff] [blame] | 1772 | SkAxisAlignment roundBaseline = SkComputeAxisAlignmentForHText(*matrix); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1773 | |
| 1774 | if (SkPaint::kLeft_Align == paint.getTextAlign()) { |
| 1775 | while (text < stop) { |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1776 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1777 | tmsProc(tms, pos); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1778 | |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 1779 | #ifdef SK_DRAW_POS_TEXT_IGNORE_SUBPIXEL_LEFT_ALIGN_FIX |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1780 | SkFixed fx = SkScalarToFixed(tms.fLoc.fX); |
| 1781 | SkFixed fy = SkScalarToFixed(tms.fLoc.fY); |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 1782 | #else |
| 1783 | SkFixed fx = SkScalarToFixed(tms.fLoc.fX) + (SK_FixedHalf >> SkGlyph::kSubBits); |
| 1784 | SkFixed fy = SkScalarToFixed(tms.fLoc.fY) + (SK_FixedHalf >> SkGlyph::kSubBits); |
| 1785 | #endif |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1786 | SkFixed fxMask = ~0; |
| 1787 | SkFixed fyMask = ~0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1788 | |
reed@google.com | cb6ccdd | 2011-08-23 21:30:47 +0000 | [diff] [blame] | 1789 | if (kX_SkAxisAlignment == roundBaseline) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1790 | fyMask = 0; |
reed@google.com | cb6ccdd | 2011-08-23 21:30:47 +0000 | [diff] [blame] | 1791 | } else if (kY_SkAxisAlignment == roundBaseline) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1792 | fxMask = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1793 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1794 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1795 | const SkGlyph& glyph = glyphCacheProc(cache, &text, |
| 1796 | fx & fxMask, fy & fyMask); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1797 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1798 | if (glyph.fWidth) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1799 | proc(d1g, fx, fy, glyph); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1800 | } |
| 1801 | pos += scalarsPerPosition; |
| 1802 | } |
| 1803 | } else { |
| 1804 | while (text < stop) { |
bungeman@google.com | 9330cfe | 2012-01-04 14:17:00 +0000 | [diff] [blame] | 1805 | const char* currentText = text; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1806 | const SkGlyph* glyph = &glyphCacheProc(cache, &text, 0, 0); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1807 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1808 | if (glyph->fWidth) { |
| 1809 | SkDEBUGCODE(SkFixed prevAdvX = glyph->fAdvanceX;) |
| 1810 | SkDEBUGCODE(SkFixed prevAdvY = glyph->fAdvanceY;) |
| 1811 | |
| 1812 | SkFixed fx, fy; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1813 | SkFixed fxMask = ~0; |
| 1814 | SkFixed fyMask = ~0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1815 | tmsProc(tms, pos); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1816 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1817 | { |
| 1818 | SkIPoint fixedLoc; |
| 1819 | alignProc(tms.fLoc, *glyph, &fixedLoc); |
bungeman@google.com | 2211b62 | 2012-01-13 15:02:58 +0000 | [diff] [blame] | 1820 | fx = fixedLoc.fX + (SK_FixedHalf >> SkGlyph::kSubBits); |
| 1821 | fy = fixedLoc.fY + (SK_FixedHalf >> SkGlyph::kSubBits); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1822 | |
reed@google.com | cb6ccdd | 2011-08-23 21:30:47 +0000 | [diff] [blame] | 1823 | if (kX_SkAxisAlignment == roundBaseline) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1824 | fyMask = 0; |
reed@google.com | cb6ccdd | 2011-08-23 21:30:47 +0000 | [diff] [blame] | 1825 | } else if (kY_SkAxisAlignment == roundBaseline) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1826 | fxMask = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1827 | } |
| 1828 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1829 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1830 | // have to call again, now that we've been "aligned" |
bungeman@google.com | 9330cfe | 2012-01-04 14:17:00 +0000 | [diff] [blame] | 1831 | glyph = &glyphCacheProc(cache, ¤tText, |
| 1832 | fx & fxMask, fy & fyMask); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1833 | // the assumption is that the advance hasn't changed |
| 1834 | SkASSERT(prevAdvX == glyph->fAdvanceX); |
| 1835 | SkASSERT(prevAdvY == glyph->fAdvanceY); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1836 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1837 | proc(d1g, fx, fy, *glyph); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1838 | } |
| 1839 | pos += scalarsPerPosition; |
| 1840 | } |
| 1841 | } |
| 1842 | } else { // not subpixel |
reed@google.com | aeb0786 | 2012-04-18 18:32:04 +0000 | [diff] [blame] | 1843 | if (SkPaint::kLeft_Align == paint.getTextAlign()) { |
| 1844 | while (text < stop) { |
| 1845 | // the last 2 parameters are ignored |
| 1846 | const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1847 | |
reed@google.com | aeb0786 | 2012-04-18 18:32:04 +0000 | [diff] [blame] | 1848 | if (glyph.fWidth) { |
| 1849 | tmsProc(tms, pos); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1850 | |
reed@google.com | aeb0786 | 2012-04-18 18:32:04 +0000 | [diff] [blame] | 1851 | proc(d1g, |
| 1852 | SkScalarToFixed(tms.fLoc.fX) + SK_FixedHalf, |
| 1853 | SkScalarToFixed(tms.fLoc.fY) + SK_FixedHalf, |
| 1854 | glyph); |
| 1855 | } |
| 1856 | pos += scalarsPerPosition; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1857 | } |
reed@google.com | aeb0786 | 2012-04-18 18:32:04 +0000 | [diff] [blame] | 1858 | } else { |
| 1859 | while (text < stop) { |
| 1860 | // the last 2 parameters are ignored |
| 1861 | const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
| 1862 | |
| 1863 | if (glyph.fWidth) { |
| 1864 | tmsProc(tms, pos); |
| 1865 | |
| 1866 | SkIPoint fixedLoc; |
| 1867 | alignProc(tms.fLoc, glyph, &fixedLoc); |
| 1868 | |
| 1869 | proc(d1g, |
| 1870 | fixedLoc.fX + SK_FixedHalf, |
| 1871 | fixedLoc.fY + SK_FixedHalf, |
| 1872 | glyph); |
| 1873 | } |
| 1874 | pos += scalarsPerPosition; |
| 1875 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1876 | } |
| 1877 | } |
| 1878 | } |
| 1879 | |
| 1880 | #if defined _WIN32 && _MSC_VER >= 1300 |
| 1881 | #pragma warning ( pop ) |
| 1882 | #endif |
| 1883 | |
| 1884 | /////////////////////////////////////////////////////////////////////////////// |
| 1885 | |
| 1886 | #include "SkPathMeasure.h" |
| 1887 | |
| 1888 | static void morphpoints(SkPoint dst[], const SkPoint src[], int count, |
| 1889 | SkPathMeasure& meas, const SkMatrix& matrix) { |
| 1890 | SkMatrix::MapXYProc proc = matrix.getMapXYProc(); |
| 1891 | |
| 1892 | for (int i = 0; i < count; i++) { |
| 1893 | SkPoint pos; |
| 1894 | SkVector tangent; |
| 1895 | |
| 1896 | proc(matrix, src[i].fX, src[i].fY, &pos); |
| 1897 | SkScalar sx = pos.fX; |
| 1898 | SkScalar sy = pos.fY; |
| 1899 | |
reed@google.com | 8f17b0d | 2012-04-12 13:24:30 +0000 | [diff] [blame] | 1900 | if (!meas.getPosTan(sx, &pos, &tangent)) { |
| 1901 | // set to 0 if the measure failed, so that we just set dst == pos |
| 1902 | tangent.set(0, 0); |
| 1903 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1904 | |
| 1905 | /* This is the old way (that explains our approach but is way too slow |
| 1906 | SkMatrix matrix; |
| 1907 | SkPoint pt; |
| 1908 | |
| 1909 | pt.set(sx, sy); |
| 1910 | matrix.setSinCos(tangent.fY, tangent.fX); |
| 1911 | matrix.preTranslate(-sx, 0); |
| 1912 | matrix.postTranslate(pos.fX, pos.fY); |
| 1913 | matrix.mapPoints(&dst[i], &pt, 1); |
| 1914 | */ |
| 1915 | dst[i].set(pos.fX - SkScalarMul(tangent.fY, sy), |
| 1916 | pos.fY + SkScalarMul(tangent.fX, sy)); |
| 1917 | } |
| 1918 | } |
| 1919 | |
| 1920 | /* TODO |
| 1921 | |
| 1922 | Need differentially more subdivisions when the follow-path is curvy. Not sure how to |
| 1923 | determine that, but we need it. I guess a cheap answer is let the caller tell us, |
| 1924 | but that seems like a cop-out. Another answer is to get Rob Johnson to figure it out. |
| 1925 | */ |
| 1926 | static void morphpath(SkPath* dst, const SkPath& src, SkPathMeasure& meas, |
| 1927 | const SkMatrix& matrix) { |
| 1928 | SkPath::Iter iter(src, false); |
| 1929 | SkPoint srcP[4], dstP[3]; |
| 1930 | SkPath::Verb verb; |
| 1931 | |
| 1932 | while ((verb = iter.next(srcP)) != SkPath::kDone_Verb) { |
| 1933 | switch (verb) { |
| 1934 | case SkPath::kMove_Verb: |
| 1935 | morphpoints(dstP, srcP, 1, meas, matrix); |
| 1936 | dst->moveTo(dstP[0]); |
| 1937 | break; |
| 1938 | case SkPath::kLine_Verb: |
| 1939 | // turn lines into quads to look bendy |
| 1940 | srcP[0].fX = SkScalarAve(srcP[0].fX, srcP[1].fX); |
| 1941 | srcP[0].fY = SkScalarAve(srcP[0].fY, srcP[1].fY); |
| 1942 | morphpoints(dstP, srcP, 2, meas, matrix); |
| 1943 | dst->quadTo(dstP[0], dstP[1]); |
| 1944 | break; |
| 1945 | case SkPath::kQuad_Verb: |
| 1946 | morphpoints(dstP, &srcP[1], 2, meas, matrix); |
| 1947 | dst->quadTo(dstP[0], dstP[1]); |
| 1948 | break; |
| 1949 | case SkPath::kCubic_Verb: |
| 1950 | morphpoints(dstP, &srcP[1], 3, meas, matrix); |
| 1951 | dst->cubicTo(dstP[0], dstP[1], dstP[2]); |
| 1952 | break; |
| 1953 | case SkPath::kClose_Verb: |
| 1954 | dst->close(); |
| 1955 | break; |
| 1956 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 1957 | SkDEBUGFAIL("unknown verb"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1958 | break; |
| 1959 | } |
| 1960 | } |
| 1961 | } |
| 1962 | |
| 1963 | void SkDraw::drawTextOnPath(const char text[], size_t byteLength, |
| 1964 | const SkPath& follow, const SkMatrix* matrix, |
| 1965 | const SkPaint& paint) const { |
| 1966 | SkASSERT(byteLength == 0 || text != NULL); |
| 1967 | |
| 1968 | // nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 1969 | if (text == NULL || byteLength == 0 || fRC->isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1970 | return; |
| 1971 | } |
| 1972 | |
djsollen@google.com | 166e653 | 2012-03-20 14:24:38 +0000 | [diff] [blame] | 1973 | SkTextToPathIter iter(text, byteLength, paint, true); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1974 | SkPathMeasure meas(follow, false); |
| 1975 | SkScalar hOffset = 0; |
| 1976 | |
| 1977 | // need to measure first |
| 1978 | if (paint.getTextAlign() != SkPaint::kLeft_Align) { |
| 1979 | SkScalar pathLen = meas.getLength(); |
| 1980 | if (paint.getTextAlign() == SkPaint::kCenter_Align) { |
| 1981 | pathLen = SkScalarHalf(pathLen); |
| 1982 | } |
| 1983 | hOffset += pathLen; |
| 1984 | } |
| 1985 | |
| 1986 | const SkPath* iterPath; |
| 1987 | SkScalar xpos; |
| 1988 | SkMatrix scaledMatrix; |
| 1989 | SkScalar scale = iter.getPathScale(); |
| 1990 | |
| 1991 | scaledMatrix.setScale(scale, scale); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 1992 | |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 1993 | while (iter.next(&iterPath, &xpos)) { |
| 1994 | if (iterPath) { |
| 1995 | SkPath tmp; |
| 1996 | SkMatrix m(scaledMatrix); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1997 | |
reed@google.com | 7b4531f | 2012-08-07 15:53:00 +0000 | [diff] [blame] | 1998 | m.postTranslate(xpos + hOffset, 0); |
| 1999 | if (matrix) { |
| 2000 | m.postConcat(*matrix); |
| 2001 | } |
| 2002 | morphpath(&tmp, *iterPath, meas, m); |
| 2003 | if (fDevice) { |
| 2004 | fDevice->drawPath(*this, tmp, iter.getPaint(), NULL, true); |
| 2005 | } else { |
| 2006 | this->drawPath(tmp, iter.getPaint(), NULL, true); |
| 2007 | } |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 2008 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2009 | } |
| 2010 | } |
| 2011 | |
djsollen@google.com | 56c6977 | 2011-11-08 19:00:26 +0000 | [diff] [blame] | 2012 | #ifdef SK_BUILD_FOR_ANDROID |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 2013 | void SkDraw::drawPosTextOnPath(const char text[], size_t byteLength, |
| 2014 | const SkPoint pos[], const SkPaint& paint, |
| 2015 | const SkPath& path, const SkMatrix* matrix) const { |
| 2016 | // nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2017 | if (text == NULL || byteLength == 0 || fRC->isEmpty()) { |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 2018 | return; |
| 2019 | } |
| 2020 | |
| 2021 | SkMatrix scaledMatrix; |
| 2022 | SkPathMeasure meas(path, false); |
| 2023 | |
| 2024 | SkMeasureCacheProc glyphCacheProc = paint.getMeasureCacheProc( |
| 2025 | SkPaint::kForward_TextBufferDirection, true); |
| 2026 | |
| 2027 | // Copied (modified) from SkTextToPathIter constructor to setup paint |
| 2028 | SkPaint tempPaint(paint); |
| 2029 | |
| 2030 | tempPaint.setLinearText(true); |
| 2031 | tempPaint.setMaskFilter(NULL); // don't want this affecting our path-cache lookup |
| 2032 | |
| 2033 | if (tempPaint.getPathEffect() == NULL && !(tempPaint.getStrokeWidth() > 0 |
| 2034 | && tempPaint.getStyle() != SkPaint::kFill_Style)) { |
| 2035 | tempPaint.setStyle(SkPaint::kFill_Style); |
| 2036 | tempPaint.setPathEffect(NULL); |
| 2037 | } |
| 2038 | // End copied from SkTextToPathIter constructor |
| 2039 | |
| 2040 | // detach cache |
| 2041 | SkGlyphCache* cache = tempPaint.detachCache(NULL); |
| 2042 | |
| 2043 | // Must set scale, even if 1 |
| 2044 | SkScalar scale = SK_Scalar1; |
| 2045 | scaledMatrix.setScale(scale, scale); |
| 2046 | |
| 2047 | // Loop over all glyph ids |
| 2048 | for (const char* stop = text + byteLength; text < stop; pos++) { |
| 2049 | |
| 2050 | const SkGlyph& glyph = glyphCacheProc(cache, &text); |
| 2051 | SkPath tmp; |
| 2052 | |
| 2053 | const SkPath* glyphPath = cache->findPath(glyph); |
| 2054 | if (glyphPath == NULL) { |
| 2055 | continue; |
| 2056 | } |
| 2057 | |
| 2058 | SkMatrix m(scaledMatrix); |
| 2059 | m.postTranslate(pos->fX, 0); |
| 2060 | |
| 2061 | if (matrix) { |
| 2062 | m.postConcat(*matrix); |
| 2063 | } |
| 2064 | |
| 2065 | morphpath(&tmp, *glyphPath, meas, m); |
| 2066 | this->drawPath(tmp, tempPaint); |
| 2067 | |
| 2068 | } |
| 2069 | |
| 2070 | // re-attach cache |
| 2071 | SkGlyphCache::AttachCache(cache); |
| 2072 | } |
| 2073 | #endif |
| 2074 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2075 | /////////////////////////////////////////////////////////////////////////////// |
| 2076 | |
| 2077 | struct VertState { |
| 2078 | int f0, f1, f2; |
| 2079 | |
| 2080 | VertState(int vCount, const uint16_t indices[], int indexCount) |
| 2081 | : fIndices(indices) { |
| 2082 | fCurrIndex = 0; |
| 2083 | if (indices) { |
| 2084 | fCount = indexCount; |
| 2085 | } else { |
| 2086 | fCount = vCount; |
| 2087 | } |
| 2088 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2089 | |
| 2090 | typedef bool (*Proc)(VertState*); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2091 | Proc chooseProc(SkCanvas::VertexMode mode); |
| 2092 | |
| 2093 | private: |
| 2094 | int fCount; |
| 2095 | int fCurrIndex; |
| 2096 | const uint16_t* fIndices; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2097 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2098 | static bool Triangles(VertState*); |
| 2099 | static bool TrianglesX(VertState*); |
| 2100 | static bool TriangleStrip(VertState*); |
| 2101 | static bool TriangleStripX(VertState*); |
| 2102 | static bool TriangleFan(VertState*); |
| 2103 | static bool TriangleFanX(VertState*); |
| 2104 | }; |
| 2105 | |
| 2106 | bool VertState::Triangles(VertState* state) { |
| 2107 | int index = state->fCurrIndex; |
| 2108 | if (index + 3 > state->fCount) { |
| 2109 | return false; |
| 2110 | } |
| 2111 | state->f0 = index + 0; |
| 2112 | state->f1 = index + 1; |
| 2113 | state->f2 = index + 2; |
| 2114 | state->fCurrIndex = index + 3; |
| 2115 | return true; |
| 2116 | } |
| 2117 | |
| 2118 | bool VertState::TrianglesX(VertState* state) { |
| 2119 | const uint16_t* indices = state->fIndices; |
| 2120 | int index = state->fCurrIndex; |
| 2121 | if (index + 3 > state->fCount) { |
| 2122 | return false; |
| 2123 | } |
| 2124 | state->f0 = indices[index + 0]; |
| 2125 | state->f1 = indices[index + 1]; |
| 2126 | state->f2 = indices[index + 2]; |
| 2127 | state->fCurrIndex = index + 3; |
| 2128 | return true; |
| 2129 | } |
| 2130 | |
| 2131 | bool VertState::TriangleStrip(VertState* state) { |
| 2132 | int index = state->fCurrIndex; |
| 2133 | if (index + 3 > state->fCount) { |
| 2134 | return false; |
| 2135 | } |
| 2136 | state->f2 = index + 2; |
| 2137 | if (index & 1) { |
| 2138 | state->f0 = index + 1; |
| 2139 | state->f1 = index + 0; |
| 2140 | } else { |
| 2141 | state->f0 = index + 0; |
| 2142 | state->f1 = index + 1; |
| 2143 | } |
| 2144 | state->fCurrIndex = index + 1; |
| 2145 | return true; |
| 2146 | } |
| 2147 | |
| 2148 | bool VertState::TriangleStripX(VertState* state) { |
| 2149 | const uint16_t* indices = state->fIndices; |
| 2150 | int index = state->fCurrIndex; |
| 2151 | if (index + 3 > state->fCount) { |
| 2152 | return false; |
| 2153 | } |
| 2154 | state->f2 = indices[index + 2]; |
| 2155 | if (index & 1) { |
| 2156 | state->f0 = indices[index + 1]; |
| 2157 | state->f1 = indices[index + 0]; |
| 2158 | } else { |
| 2159 | state->f0 = indices[index + 0]; |
| 2160 | state->f1 = indices[index + 1]; |
| 2161 | } |
| 2162 | state->fCurrIndex = index + 1; |
| 2163 | return true; |
| 2164 | } |
| 2165 | |
| 2166 | bool VertState::TriangleFan(VertState* state) { |
| 2167 | int index = state->fCurrIndex; |
| 2168 | if (index + 3 > state->fCount) { |
| 2169 | return false; |
| 2170 | } |
| 2171 | state->f0 = 0; |
| 2172 | state->f1 = index + 1; |
| 2173 | state->f2 = index + 2; |
| 2174 | state->fCurrIndex = index + 1; |
| 2175 | return true; |
| 2176 | } |
| 2177 | |
| 2178 | bool VertState::TriangleFanX(VertState* state) { |
| 2179 | const uint16_t* indices = state->fIndices; |
| 2180 | int index = state->fCurrIndex; |
| 2181 | if (index + 3 > state->fCount) { |
| 2182 | return false; |
| 2183 | } |
| 2184 | state->f0 = indices[0]; |
| 2185 | state->f1 = indices[index + 1]; |
| 2186 | state->f2 = indices[index + 2]; |
| 2187 | state->fCurrIndex = index + 1; |
| 2188 | return true; |
| 2189 | } |
| 2190 | |
| 2191 | VertState::Proc VertState::chooseProc(SkCanvas::VertexMode mode) { |
| 2192 | switch (mode) { |
| 2193 | case SkCanvas::kTriangles_VertexMode: |
| 2194 | return fIndices ? TrianglesX : Triangles; |
| 2195 | case SkCanvas::kTriangleStrip_VertexMode: |
| 2196 | return fIndices ? TriangleStripX : TriangleStrip; |
| 2197 | case SkCanvas::kTriangleFan_VertexMode: |
| 2198 | return fIndices ? TriangleFanX : TriangleFan; |
| 2199 | default: |
| 2200 | return NULL; |
| 2201 | } |
| 2202 | } |
| 2203 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2204 | typedef void (*HairProc)(const SkPoint&, const SkPoint&, const SkRasterClip&, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2205 | SkBlitter*); |
| 2206 | |
| 2207 | static HairProc ChooseHairProc(bool doAntiAlias) { |
| 2208 | return doAntiAlias ? SkScan::AntiHairLine : SkScan::HairLine; |
| 2209 | } |
| 2210 | |
| 2211 | static bool texture_to_matrix(const VertState& state, const SkPoint verts[], |
| 2212 | const SkPoint texs[], SkMatrix* matrix) { |
| 2213 | SkPoint src[3], dst[3]; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2214 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2215 | src[0] = texs[state.f0]; |
| 2216 | src[1] = texs[state.f1]; |
| 2217 | src[2] = texs[state.f2]; |
| 2218 | dst[0] = verts[state.f0]; |
| 2219 | dst[1] = verts[state.f1]; |
| 2220 | dst[2] = verts[state.f2]; |
| 2221 | return matrix->setPolyToPoly(src, dst, 3); |
| 2222 | } |
| 2223 | |
| 2224 | class SkTriColorShader : public SkShader { |
| 2225 | public: |
| 2226 | SkTriColorShader() {} |
| 2227 | |
| 2228 | bool setup(const SkPoint pts[], const SkColor colors[], int, int, int); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2229 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2230 | virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2231 | |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 2232 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTriColorShader) |
| 2233 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2234 | protected: |
| 2235 | SkTriColorShader(SkFlattenableReadBuffer& buffer) : SkShader(buffer) {} |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2236 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2237 | private: |
| 2238 | SkMatrix fDstToUnit; |
| 2239 | SkPMColor fColors[3]; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2240 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2241 | typedef SkShader INHERITED; |
| 2242 | }; |
| 2243 | |
| 2244 | bool SkTriColorShader::setup(const SkPoint pts[], const SkColor colors[], |
| 2245 | int index0, int index1, int index2) { |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2246 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2247 | fColors[0] = SkPreMultiplyColor(colors[index0]); |
| 2248 | fColors[1] = SkPreMultiplyColor(colors[index1]); |
| 2249 | fColors[2] = SkPreMultiplyColor(colors[index2]); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2250 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2251 | SkMatrix m, im; |
| 2252 | m.reset(); |
| 2253 | m.set(0, pts[index1].fX - pts[index0].fX); |
| 2254 | m.set(1, pts[index2].fX - pts[index0].fX); |
| 2255 | m.set(2, pts[index0].fX); |
| 2256 | m.set(3, pts[index1].fY - pts[index0].fY); |
| 2257 | m.set(4, pts[index2].fY - pts[index0].fY); |
| 2258 | m.set(5, pts[index0].fY); |
| 2259 | if (!m.invert(&im)) { |
| 2260 | return false; |
| 2261 | } |
| 2262 | return fDstToUnit.setConcat(im, this->getTotalInverse()); |
| 2263 | } |
| 2264 | |
| 2265 | #include "SkColorPriv.h" |
reed@android.com | 689411a | 2008-12-18 02:52:32 +0000 | [diff] [blame] | 2266 | #include "SkComposeShader.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2267 | |
| 2268 | static int ScalarTo256(SkScalar v) { |
| 2269 | int scale = SkScalarToFixed(v) >> 8; |
| 2270 | if (scale < 0) { |
| 2271 | scale = 0; |
| 2272 | } |
| 2273 | if (scale > 255) { |
| 2274 | scale = 255; |
| 2275 | } |
| 2276 | return SkAlpha255To256(scale); |
| 2277 | } |
| 2278 | |
| 2279 | void SkTriColorShader::shadeSpan(int x, int y, SkPMColor dstC[], int count) { |
| 2280 | SkPoint src; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2281 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2282 | for (int i = 0; i < count; i++) { |
| 2283 | fDstToUnit.mapXY(SkIntToScalar(x), SkIntToScalar(y), &src); |
| 2284 | x += 1; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2285 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2286 | int scale1 = ScalarTo256(src.fX); |
| 2287 | int scale2 = ScalarTo256(src.fY); |
| 2288 | int scale0 = 256 - scale1 - scale2; |
| 2289 | if (scale0 < 0) { |
| 2290 | if (scale1 > scale2) { |
| 2291 | scale2 = 256 - scale1; |
| 2292 | } else { |
| 2293 | scale1 = 256 - scale2; |
| 2294 | } |
| 2295 | scale0 = 0; |
| 2296 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2297 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2298 | dstC[i] = SkAlphaMulQ(fColors[0], scale0) + |
| 2299 | SkAlphaMulQ(fColors[1], scale1) + |
| 2300 | SkAlphaMulQ(fColors[2], scale2); |
| 2301 | } |
| 2302 | } |
| 2303 | |
| 2304 | void SkDraw::drawVertices(SkCanvas::VertexMode vmode, int count, |
| 2305 | const SkPoint vertices[], const SkPoint textures[], |
| 2306 | const SkColor colors[], SkXfermode* xmode, |
| 2307 | const uint16_t indices[], int indexCount, |
| 2308 | const SkPaint& paint) const { |
| 2309 | SkASSERT(0 == count || NULL != vertices); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2310 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2311 | // abort early if there is nothing to draw |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2312 | if (count < 3 || (indices && indexCount < 3) || fRC->isEmpty()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2313 | return; |
| 2314 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2315 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2316 | // transform out vertices into device coordinates |
| 2317 | SkAutoSTMalloc<16, SkPoint> storage(count); |
| 2318 | SkPoint* devVerts = storage.get(); |
| 2319 | fMatrix->mapPoints(devVerts, vertices, count); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2320 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2321 | if (fBounder) { |
| 2322 | SkRect bounds; |
| 2323 | bounds.set(devVerts, count); |
| 2324 | if (!fBounder->doRect(bounds, paint)) { |
| 2325 | return; |
| 2326 | } |
| 2327 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2328 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2329 | /* |
| 2330 | We can draw the vertices in 1 of 4 ways: |
| 2331 | |
| 2332 | - solid color (no shader/texture[], no colors[]) |
| 2333 | - just colors (no shader/texture[], has colors[]) |
| 2334 | - just texture (has shader/texture[], no colors[]) |
| 2335 | - colors * texture (has shader/texture[], has colors[]) |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2336 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2337 | Thus for texture drawing, we need both texture[] and a shader. |
| 2338 | */ |
| 2339 | |
| 2340 | SkTriColorShader triShader; // must be above declaration of p |
| 2341 | SkPaint p(paint); |
| 2342 | |
| 2343 | SkShader* shader = p.getShader(); |
| 2344 | if (NULL == shader) { |
| 2345 | // if we have no shader, we ignore the texture coordinates |
| 2346 | textures = NULL; |
| 2347 | } else if (NULL == textures) { |
| 2348 | // if we don't have texture coordinates, ignore the shader |
| 2349 | p.setShader(NULL); |
| 2350 | shader = NULL; |
| 2351 | } |
| 2352 | |
| 2353 | // setup the custom shader (if needed) |
| 2354 | if (NULL != colors) { |
| 2355 | if (NULL == textures) { |
| 2356 | // just colors (no texture) |
| 2357 | p.setShader(&triShader); |
| 2358 | } else { |
| 2359 | // colors * texture |
| 2360 | SkASSERT(shader); |
| 2361 | bool releaseMode = false; |
| 2362 | if (NULL == xmode) { |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 2363 | xmode = SkXfermode::Create(SkXfermode::kMultiply_Mode); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2364 | releaseMode = true; |
| 2365 | } |
| 2366 | SkShader* compose = SkNEW_ARGS(SkComposeShader, |
| 2367 | (&triShader, shader, xmode)); |
| 2368 | p.setShader(compose)->unref(); |
| 2369 | if (releaseMode) { |
| 2370 | xmode->unref(); |
| 2371 | } |
| 2372 | } |
| 2373 | } |
| 2374 | |
| 2375 | SkAutoBlitterChoose blitter(*fBitmap, *fMatrix, p); |
| 2376 | // setup our state and function pointer for iterating triangles |
| 2377 | VertState state(count, indices, indexCount); |
| 2378 | VertState::Proc vertProc = state.chooseProc(vmode); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2379 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2380 | if (NULL != textures || NULL != colors) { |
| 2381 | SkMatrix localM, tempM; |
| 2382 | bool hasLocalM = shader && shader->getLocalMatrix(&localM); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2383 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2384 | if (NULL != colors) { |
| 2385 | if (!triShader.setContext(*fBitmap, p, *fMatrix)) { |
| 2386 | colors = NULL; |
| 2387 | } |
| 2388 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2389 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2390 | while (vertProc(&state)) { |
| 2391 | if (NULL != textures) { |
| 2392 | if (texture_to_matrix(state, vertices, textures, &tempM)) { |
| 2393 | if (hasLocalM) { |
| 2394 | tempM.postConcat(localM); |
| 2395 | } |
| 2396 | shader->setLocalMatrix(tempM); |
| 2397 | // need to recal setContext since we changed the local matrix |
| 2398 | if (!shader->setContext(*fBitmap, p, *fMatrix)) { |
| 2399 | continue; |
| 2400 | } |
| 2401 | } |
| 2402 | } |
| 2403 | if (NULL != colors) { |
| 2404 | if (!triShader.setup(vertices, colors, |
| 2405 | state.f0, state.f1, state.f2)) { |
| 2406 | continue; |
| 2407 | } |
| 2408 | } |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2409 | |
| 2410 | SkPoint tmp[] = { |
| 2411 | devVerts[state.f0], devVerts[state.f1], devVerts[state.f2] |
| 2412 | }; |
| 2413 | SkScan::FillTriangle(tmp, *fRC, blitter.get()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2414 | } |
| 2415 | // now restore the shader's original local matrix |
| 2416 | if (NULL != shader) { |
| 2417 | if (hasLocalM) { |
| 2418 | shader->setLocalMatrix(localM); |
| 2419 | } else { |
| 2420 | shader->resetLocalMatrix(); |
| 2421 | } |
| 2422 | } |
| 2423 | } else { |
| 2424 | // no colors[] and no texture |
| 2425 | HairProc hairProc = ChooseHairProc(paint.isAntiAlias()); |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2426 | const SkRasterClip& clip = *fRC; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2427 | while (vertProc(&state)) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2428 | hairProc(devVerts[state.f0], devVerts[state.f1], clip, blitter.get()); |
| 2429 | hairProc(devVerts[state.f1], devVerts[state.f2], clip, blitter.get()); |
| 2430 | hairProc(devVerts[state.f2], devVerts[state.f0], clip, blitter.get()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2431 | } |
| 2432 | } |
| 2433 | } |
| 2434 | |
reed@google.com | 0a0a236 | 2011-03-23 13:51:55 +0000 | [diff] [blame] | 2435 | /////////////////////////////////////////////////////////////////////////////// |
| 2436 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2437 | |
| 2438 | #ifdef SK_DEBUG |
| 2439 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 2440 | void SkDraw::validate() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2441 | SkASSERT(fBitmap != NULL); |
| 2442 | SkASSERT(fMatrix != NULL); |
| 2443 | SkASSERT(fClip != NULL); |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2444 | SkASSERT(fRC != NULL); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2445 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2446 | const SkIRect& cr = fRC->getBounds(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2447 | SkIRect br; |
| 2448 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 2449 | br.set(0, 0, fBitmap->width(), fBitmap->height()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2450 | SkASSERT(cr.isEmpty() || br.contains(cr)); |
| 2451 | } |
| 2452 | |
| 2453 | #endif |
| 2454 | |
reed@google.com | 0a0a236 | 2011-03-23 13:51:55 +0000 | [diff] [blame] | 2455 | /////////////////////////////////////////////////////////////////////////////// |
| 2456 | |
| 2457 | SkBounder::SkBounder() { |
| 2458 | // initialize up front. This gets reset by SkCanvas before each draw call. |
| 2459 | fClip = &SkRegion::GetEmptyRegion(); |
| 2460 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2461 | |
| 2462 | bool SkBounder::doIRect(const SkIRect& r) { |
| 2463 | SkIRect rr; |
| 2464 | return rr.intersect(fClip->getBounds(), r) && this->onIRect(rr); |
| 2465 | } |
| 2466 | |
reed@android.com | d055c1f | 2010-03-01 14:54:05 +0000 | [diff] [blame] | 2467 | // TODO: change the prototype to take fixed, and update the callers |
| 2468 | bool SkBounder::doIRectGlyph(const SkIRect& r, int x, int y, |
| 2469 | const SkGlyph& glyph) { |
reed@android.com | 474a12c | 2010-01-04 19:35:33 +0000 | [diff] [blame] | 2470 | SkIRect rr; |
reed@android.com | d055c1f | 2010-03-01 14:54:05 +0000 | [diff] [blame] | 2471 | if (!rr.intersect(fClip->getBounds(), r)) { |
| 2472 | return false; |
| 2473 | } |
| 2474 | GlyphRec rec; |
| 2475 | rec.fLSB.set(SkIntToFixed(x), SkIntToFixed(y)); |
| 2476 | rec.fRSB.set(rec.fLSB.fX + glyph.fAdvanceX, |
| 2477 | rec.fLSB.fY + glyph.fAdvanceY); |
| 2478 | rec.fGlyphID = glyph.getGlyphID(); |
| 2479 | rec.fFlags = 0; |
| 2480 | return this->onIRectGlyph(rr, rec); |
reed@android.com | 474a12c | 2010-01-04 19:35:33 +0000 | [diff] [blame] | 2481 | } |
| 2482 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2483 | bool SkBounder::doHairline(const SkPoint& pt0, const SkPoint& pt1, |
| 2484 | const SkPaint& paint) { |
| 2485 | SkIRect r; |
| 2486 | SkScalar v0, v1; |
| 2487 | |
| 2488 | v0 = pt0.fX; |
| 2489 | v1 = pt1.fX; |
| 2490 | if (v0 > v1) { |
| 2491 | SkTSwap<SkScalar>(v0, v1); |
| 2492 | } |
| 2493 | r.fLeft = SkScalarFloor(v0); |
| 2494 | r.fRight = SkScalarCeil(v1); |
| 2495 | |
| 2496 | v0 = pt0.fY; |
| 2497 | v1 = pt1.fY; |
| 2498 | if (v0 > v1) { |
| 2499 | SkTSwap<SkScalar>(v0, v1); |
| 2500 | } |
| 2501 | r.fTop = SkScalarFloor(v0); |
| 2502 | r.fBottom = SkScalarCeil(v1); |
| 2503 | |
| 2504 | if (paint.isAntiAlias()) { |
| 2505 | r.inset(-1, -1); |
| 2506 | } |
| 2507 | return this->doIRect(r); |
| 2508 | } |
| 2509 | |
| 2510 | bool SkBounder::doRect(const SkRect& rect, const SkPaint& paint) { |
| 2511 | SkIRect r; |
| 2512 | |
| 2513 | if (paint.getStyle() == SkPaint::kFill_Style) { |
| 2514 | rect.round(&r); |
| 2515 | } else { |
| 2516 | int rad = -1; |
| 2517 | rect.roundOut(&r); |
| 2518 | if (paint.isAntiAlias()) { |
| 2519 | rad = -2; |
| 2520 | } |
| 2521 | r.inset(rad, rad); |
| 2522 | } |
| 2523 | return this->doIRect(r); |
| 2524 | } |
| 2525 | |
| 2526 | bool SkBounder::doPath(const SkPath& path, const SkPaint& paint, bool doFill) { |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 2527 | SkIRect r; |
| 2528 | const SkRect& bounds = path.getBounds(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2529 | |
| 2530 | if (doFill) { |
| 2531 | bounds.round(&r); |
| 2532 | } else { // hairline |
| 2533 | bounds.roundOut(&r); |
| 2534 | } |
| 2535 | |
| 2536 | if (paint.isAntiAlias()) { |
| 2537 | r.inset(-1, -1); |
| 2538 | } |
| 2539 | return this->doIRect(r); |
| 2540 | } |
| 2541 | |
| 2542 | void SkBounder::commit() { |
| 2543 | // override in subclass |
| 2544 | } |
| 2545 | |
| 2546 | //////////////////////////////////////////////////////////////////////////////////////////////// |
| 2547 | |
| 2548 | #include "SkPath.h" |
| 2549 | #include "SkDraw.h" |
| 2550 | #include "SkRegion.h" |
| 2551 | #include "SkBlitter.h" |
| 2552 | |
| 2553 | static bool compute_bounds(const SkPath& devPath, const SkIRect* clipBounds, |
| 2554 | SkMaskFilter* filter, const SkMatrix* filterMatrix, |
| 2555 | SkIRect* bounds) { |
| 2556 | if (devPath.isEmpty()) { |
| 2557 | return false; |
| 2558 | } |
| 2559 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2560 | // init our bounds from the path |
| 2561 | { |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 2562 | SkRect pathBounds = devPath.getBounds(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2563 | pathBounds.inset(-SK_ScalarHalf, -SK_ScalarHalf); |
| 2564 | pathBounds.roundOut(bounds); |
| 2565 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2566 | |
tomhudson@google.com | 6db75fc | 2012-03-23 14:46:48 +0000 | [diff] [blame] | 2567 | SkIPoint margin = SkIPoint::Make(0, 0); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2568 | if (filter) { |
| 2569 | SkASSERT(filterMatrix); |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2570 | |
bungeman@google.com | 5af16f8 | 2011-09-02 15:06:44 +0000 | [diff] [blame] | 2571 | SkMask srcM, dstM; |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2572 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2573 | srcM.fBounds = *bounds; |
| 2574 | srcM.fFormat = SkMask::kA8_Format; |
| 2575 | srcM.fImage = NULL; |
| 2576 | if (!filter->filterMask(&dstM, srcM, *filterMatrix, &margin)) { |
| 2577 | return false; |
| 2578 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2579 | } |
| 2580 | |
bungeman@google.com | 5af16f8 | 2011-09-02 15:06:44 +0000 | [diff] [blame] | 2581 | // (possibly) trim the bounds to reflect the clip |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2582 | // (plus whatever slop the filter needs) |
bungeman@google.com | 5af16f8 | 2011-09-02 15:06:44 +0000 | [diff] [blame] | 2583 | if (clipBounds) { |
| 2584 | SkIRect tmp = *clipBounds; |
reed@android.com | 3555591 | 2009-03-16 18:46:55 +0000 | [diff] [blame] | 2585 | // Ugh. Guard against gigantic margins from wacky filters. Without this |
| 2586 | // check we can request arbitrary amounts of slop beyond our visible |
| 2587 | // clip, and bring down the renderer (at least on finite RAM machines |
| 2588 | // like handsets, etc.). Need to balance this invented value between |
| 2589 | // quality of large filters like blurs, and the corresponding memory |
| 2590 | // requests. |
| 2591 | static const int MAX_MARGIN = 128; |
| 2592 | tmp.inset(-SkMin32(margin.fX, MAX_MARGIN), |
| 2593 | -SkMin32(margin.fY, MAX_MARGIN)); |
bungeman@google.com | 5af16f8 | 2011-09-02 15:06:44 +0000 | [diff] [blame] | 2594 | if (!bounds->intersect(tmp)) { |
| 2595 | return false; |
| 2596 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2597 | } |
| 2598 | |
| 2599 | return true; |
| 2600 | } |
| 2601 | |
junov@chromium.org | 2ac4ef5 | 2012-04-04 15:16:51 +0000 | [diff] [blame] | 2602 | static void draw_into_mask(const SkMask& mask, const SkPath& devPath, |
| 2603 | SkPaint::Style style) { |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2604 | SkBitmap bm; |
| 2605 | SkDraw draw; |
| 2606 | SkRasterClip clip; |
| 2607 | SkMatrix matrix; |
| 2608 | SkPaint paint; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2609 | |
| 2610 | bm.setConfig(SkBitmap::kA8_Config, mask.fBounds.width(), mask.fBounds.height(), mask.fRowBytes); |
| 2611 | bm.setPixels(mask.fImage); |
| 2612 | |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2613 | clip.setRect(SkIRect::MakeWH(mask.fBounds.width(), mask.fBounds.height())); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2614 | matrix.setTranslate(-SkIntToScalar(mask.fBounds.fLeft), |
| 2615 | -SkIntToScalar(mask.fBounds.fTop)); |
| 2616 | |
| 2617 | draw.fBitmap = &bm; |
reed@google.com | 045e62d | 2011-10-24 12:19:46 +0000 | [diff] [blame] | 2618 | draw.fRC = &clip; |
| 2619 | draw.fClip = &clip.bwRgn(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2620 | draw.fMatrix = &matrix; |
| 2621 | draw.fBounder = NULL; |
| 2622 | paint.setAntiAlias(true); |
junov@chromium.org | 2ac4ef5 | 2012-04-04 15:16:51 +0000 | [diff] [blame] | 2623 | paint.setStyle(style); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2624 | draw.drawPath(devPath, paint); |
| 2625 | } |
| 2626 | |
| 2627 | bool SkDraw::DrawToMask(const SkPath& devPath, const SkIRect* clipBounds, |
| 2628 | SkMaskFilter* filter, const SkMatrix* filterMatrix, |
junov@chromium.org | 2ac4ef5 | 2012-04-04 15:16:51 +0000 | [diff] [blame] | 2629 | SkMask* mask, SkMask::CreateMode mode, |
| 2630 | SkPaint::Style style) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2631 | if (SkMask::kJustRenderImage_CreateMode != mode) { |
| 2632 | if (!compute_bounds(devPath, clipBounds, filter, filterMatrix, &mask->fBounds)) |
| 2633 | return false; |
| 2634 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2635 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2636 | if (SkMask::kComputeBoundsAndRenderImage_CreateMode == mode) { |
| 2637 | mask->fFormat = SkMask::kA8_Format; |
| 2638 | mask->fRowBytes = mask->fBounds.width(); |
reed@android.com | 543ed93 | 2009-04-24 12:43:40 +0000 | [diff] [blame] | 2639 | size_t size = mask->computeImageSize(); |
| 2640 | if (0 == size) { |
| 2641 | // we're too big to allocate the mask, abort |
| 2642 | return false; |
| 2643 | } |
| 2644 | mask->fImage = SkMask::AllocImage(size); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2645 | memset(mask->fImage, 0, mask->computeImageSize()); |
| 2646 | } |
| 2647 | |
| 2648 | if (SkMask::kJustComputeBounds_CreateMode != mode) { |
junov@chromium.org | 2ac4ef5 | 2012-04-04 15:16:51 +0000 | [diff] [blame] | 2649 | draw_into_mask(*mask, devPath, style); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2650 | } |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 2651 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2652 | return true; |
| 2653 | } |