vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 1 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 2 | * Copyright 2011 Google Inc. |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 3 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 6 | */ |
| 7 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 8 | #include "SkData.h" |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 9 | #include "SkGlyphCache.h" |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 10 | #include "SkPaint.h" |
halcanary | fb62b3d | 2015-01-21 09:59:14 -0800 | [diff] [blame] | 11 | #include "SkPDFCanon.h" |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 12 | #include "SkPDFConvertType1FontStream.h" |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 13 | #include "SkPDFDevice.h" |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 14 | #include "SkPDFMakeToUnicodeCmap.h" |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 15 | #include "SkPDFFont.h" |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 16 | #include "SkPDFUtils.h" |
vandebo@chromium.org | f77e27d | 2011-03-10 22:50:28 +0000 | [diff] [blame] | 17 | #include "SkRefCnt.h" |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 18 | #include "SkScalar.h" |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 19 | #include "SkStream.h" |
reed@google.com | fed86bd | 2013-03-14 15:04:57 +0000 | [diff] [blame] | 20 | #include "SkTypefacePriv.h" |
vandebo@chromium.org | 325cb9a | 2011-03-30 18:36:29 +0000 | [diff] [blame] | 21 | #include "SkTypes.h" |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 22 | #include "SkUtils.h" |
| 23 | |
benjaminwagner | bc348f4 | 2016-01-05 17:00:04 -0800 | [diff] [blame] | 24 | #if defined (SK_SFNTLY_SUBSETTER) |
| 25 | #if defined (GOOGLE3) |
benjaminwagner | 86ea33e | 2015-10-26 10:46:25 -0700 | [diff] [blame] | 26 | // #including #defines doesn't work with this build system. |
| 27 | #include "typography/font/sfntly/src/sample/chromium/font_subsetter.h" |
benjaminwagner | bc348f4 | 2016-01-05 17:00:04 -0800 | [diff] [blame] | 28 | #else |
| 29 | #include SK_SFNTLY_SUBSETTER |
benjaminwagner | 86ea33e | 2015-10-26 10:46:25 -0700 | [diff] [blame] | 30 | #endif |
vandebo@chromium.org | 1f16589 | 2011-07-26 02:11:41 +0000 | [diff] [blame] | 31 | #endif |
| 32 | |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 33 | namespace { |
| 34 | |
vandebo@chromium.org | dcf9c19 | 2013-03-13 20:01:51 +0000 | [diff] [blame] | 35 | // PDF's notion of symbolic vs non-symbolic is related to the character set, not |
| 36 | // symbols vs. characters. Rarely is a font the right character set to call it |
| 37 | // non-symbolic, so always call it symbolic. (PDF 1.4 spec, section 5.7.1) |
| 38 | static const int kPdfSymbolic = 4; |
| 39 | |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 40 | struct AdvanceMetric { |
| 41 | enum MetricType { |
| 42 | kDefault, // Default advance: fAdvance.count = 1 |
| 43 | kRange, // Advances for a range: fAdvance.count = fEndID-fStartID |
| 44 | kRun // fStartID-fEndID have same advance: fAdvance.count = 1 |
| 45 | }; |
| 46 | MetricType fType; |
| 47 | uint16_t fStartId; |
| 48 | uint16_t fEndId; |
| 49 | SkTDArray<int16_t> fAdvance; |
| 50 | AdvanceMetric(uint16_t startId) : fStartId(startId) {} |
| 51 | AdvanceMetric(AdvanceMetric&&) = default; |
| 52 | AdvanceMetric& operator=(AdvanceMetric&& other) = default; |
| 53 | AdvanceMetric(const AdvanceMetric&) = delete; |
| 54 | AdvanceMetric& operator=(const AdvanceMetric&) = delete; |
| 55 | }; |
| 56 | |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 57 | class SkPDFType0Font final : public SkPDFFont { |
| 58 | public: |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 59 | SkPDFType0Font(sk_sp<const SkAdvancedTypefaceMetrics> info, |
| 60 | sk_sp<SkTypeface> typeface, |
| 61 | SkAdvancedTypefaceMetrics::FontType type); |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 62 | virtual ~SkPDFType0Font(); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 63 | sk_sp<SkPDFObject> getFontSubset(const SkPDFGlyphSet* usage) override; |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 64 | #ifdef SK_DEBUG |
| 65 | void emitObject(SkWStream*, |
| 66 | const SkPDFObjNumMap&, |
| 67 | const SkPDFSubstituteMap&) const override; |
| 68 | #endif |
| 69 | |
| 70 | private: |
| 71 | #ifdef SK_DEBUG |
| 72 | bool fPopulated; |
| 73 | #endif |
| 74 | bool populate(const SkPDFGlyphSet* subset); |
| 75 | typedef SkPDFDict INHERITED; |
| 76 | }; |
| 77 | |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 78 | class SkPDFType1Font final : public SkPDFFont { |
| 79 | public: |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 80 | SkPDFType1Font(sk_sp<const SkAdvancedTypefaceMetrics> info, |
| 81 | sk_sp<SkTypeface> typeface, |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 82 | uint16_t glyphID, |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 83 | sk_sp<SkPDFDict> relatedFontDescriptor); |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 84 | virtual ~SkPDFType1Font(); |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 85 | |
| 86 | private: |
| 87 | bool populate(int16_t glyphID); |
| 88 | bool addFontDescriptor(int16_t defaultWidth); |
| 89 | }; |
| 90 | |
| 91 | class SkPDFType3Font final : public SkPDFFont { |
| 92 | public: |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 93 | SkPDFType3Font(sk_sp<const SkAdvancedTypefaceMetrics> info, |
| 94 | sk_sp<SkTypeface> typeface, |
| 95 | SkAdvancedTypefaceMetrics::FontType fontType, |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 96 | uint16_t glyphID); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 97 | virtual ~SkPDFType3Font() {} |
| 98 | void emitObject(SkWStream*, |
| 99 | const SkPDFObjNumMap&, |
| 100 | const SkPDFSubstituteMap&) const override { |
| 101 | SkDEBUGFAIL("should call getFontSubset!"); |
| 102 | } |
| 103 | sk_sp<SkPDFObject> getFontSubset(const SkPDFGlyphSet* usage) override; |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 104 | }; |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 105 | |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 106 | /////////////////////////////////////////////////////////////////////////////// |
| 107 | // File-Local Functions |
| 108 | /////////////////////////////////////////////////////////////////////////////// |
| 109 | |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 110 | const int16_t kInvalidAdvance = SK_MinS16; |
| 111 | const int16_t kDontCareAdvance = SK_MinS16 + 1; |
| 112 | |
| 113 | static void stripUninterestingTrailingAdvancesFromRange( |
| 114 | AdvanceMetric* range) { |
| 115 | SkASSERT(range); |
| 116 | |
| 117 | int expectedAdvanceCount = range->fEndId - range->fStartId + 1; |
| 118 | if (range->fAdvance.count() < expectedAdvanceCount) { |
| 119 | return; |
| 120 | } |
| 121 | |
| 122 | for (int i = expectedAdvanceCount - 1; i >= 0; --i) { |
| 123 | if (range->fAdvance[i] != kDontCareAdvance && |
| 124 | range->fAdvance[i] != kInvalidAdvance && |
| 125 | range->fAdvance[i] != 0) { |
| 126 | range->fEndId = range->fStartId + i; |
| 127 | break; |
| 128 | } |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | static void zeroWildcardsInRange(AdvanceMetric* range) { |
| 133 | SkASSERT(range); |
| 134 | if (range->fType != AdvanceMetric::kRange) { |
| 135 | return; |
| 136 | } |
| 137 | SkASSERT(range->fAdvance.count() == range->fEndId - range->fStartId + 1); |
| 138 | |
| 139 | // Zero out wildcards. |
| 140 | for (int i = 0; i < range->fAdvance.count(); ++i) { |
| 141 | if (range->fAdvance[i] == kDontCareAdvance) { |
| 142 | range->fAdvance[i] = 0; |
| 143 | } |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | static void FinishRange( |
| 148 | AdvanceMetric* range, |
| 149 | int endId, |
| 150 | AdvanceMetric::MetricType type) { |
| 151 | range->fEndId = endId; |
| 152 | range->fType = type; |
| 153 | stripUninterestingTrailingAdvancesFromRange(range); |
| 154 | int newLength; |
| 155 | if (type == AdvanceMetric::kRange) { |
| 156 | newLength = range->fEndId - range->fStartId + 1; |
| 157 | } else { |
| 158 | if (range->fEndId == range->fStartId) { |
| 159 | range->fType = AdvanceMetric::kRange; |
| 160 | } |
| 161 | newLength = 1; |
| 162 | } |
| 163 | SkASSERT(range->fAdvance.count() >= newLength); |
| 164 | range->fAdvance.setCount(newLength); |
| 165 | zeroWildcardsInRange(range); |
| 166 | } |
| 167 | |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 168 | /** Retrieve advance data for glyphs. Used by the PDF backend. */ |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 169 | // TODO(halcanary): this function is complex enough to need its logic |
| 170 | // tested with unit tests. On the other hand, I want to do another |
| 171 | // round of re-factoring before figuring out how to mock this. |
| 172 | // TODO(halcanary): this function should be combined with |
| 173 | // composeAdvanceData() so that we don't need to produce a linked list |
| 174 | // of intermediate values. Or we could make the intermediate value |
| 175 | // something other than a linked list. |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 176 | static void set_glyph_widths(SkTypeface* typeface, |
| 177 | const SkPDFGlyphSet* subset, |
| 178 | SkSinglyLinkedList<AdvanceMetric>* glyphWidths) { |
| 179 | SkPaint tmpPaint; |
| 180 | tmpPaint.setHinting(SkPaint::kNo_Hinting); |
| 181 | tmpPaint.setTypeface(sk_ref_sp(typeface)); |
| 182 | tmpPaint.setTextSize((SkScalar)typeface->getUnitsPerEm()); |
| 183 | const SkSurfaceProps props(0, kUnknown_SkPixelGeometry); |
| 184 | SkAutoGlyphCache glyphCache(tmpPaint, &props, nullptr); |
| 185 | SkASSERT(glyphCache.get()); |
| 186 | |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 187 | // Assuming that on average, the ASCII representation of an advance plus |
| 188 | // a space is 8 characters and the ASCII representation of a glyph id is 3 |
| 189 | // characters, then the following cut offs for using different range types |
| 190 | // apply: |
| 191 | // The cost of stopping and starting the range is 7 characers |
| 192 | // a. Removing 4 0's or don't care's is a win |
| 193 | // The cost of stopping and starting the range plus a run is 22 |
| 194 | // characters |
| 195 | // b. Removing 3 repeating advances is a win |
| 196 | // c. Removing 2 repeating advances and 3 don't cares is a win |
| 197 | // When not currently in a range the cost of a run over a range is 16 |
| 198 | // characaters, so: |
| 199 | // d. Removing a leading 0/don't cares is a win because it is omitted |
| 200 | // e. Removing 2 repeating advances is a win |
| 201 | |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 202 | int num_glyphs = typeface->countGlyphs(); |
| 203 | |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 204 | AdvanceMetric* prevRange = nullptr; |
| 205 | int16_t lastAdvance = kInvalidAdvance; |
| 206 | int repeatedAdvances = 0; |
| 207 | int wildCardsInRun = 0; |
| 208 | int trailingWildCards = 0; |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 209 | |
| 210 | // Limit the loop count to glyph id ranges provided. |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 211 | int lastIndex = num_glyphs; |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 212 | if (subset) { |
| 213 | while (!subset->has(lastIndex - 1) && lastIndex > 0) { |
| 214 | --lastIndex; |
| 215 | } |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 216 | } |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 217 | AdvanceMetric curRange(0); |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 218 | |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 219 | for (int gId = 0; gId <= lastIndex; gId++) { |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 220 | int16_t advance = kInvalidAdvance; |
| 221 | if (gId < lastIndex) { |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 222 | if (!subset || 0 == gId || subset->has(gId)) { |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 223 | advance = (int16_t)glyphCache->getGlyphIDAdvance(gId).fAdvanceX; |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 224 | } else { |
| 225 | advance = kDontCareAdvance; |
| 226 | } |
| 227 | } |
| 228 | if (advance == lastAdvance) { |
| 229 | repeatedAdvances++; |
| 230 | trailingWildCards = 0; |
| 231 | } else if (advance == kDontCareAdvance) { |
| 232 | wildCardsInRun++; |
| 233 | trailingWildCards++; |
| 234 | } else if (curRange.fAdvance.count() == |
| 235 | repeatedAdvances + 1 + wildCardsInRun) { // All in run. |
| 236 | if (lastAdvance == 0) { |
| 237 | curRange.fStartId = gId; // reset |
| 238 | curRange.fAdvance.setCount(0); |
| 239 | trailingWildCards = 0; |
| 240 | } else if (repeatedAdvances + 1 >= 2 || trailingWildCards >= 4) { |
| 241 | FinishRange(&curRange, gId - 1, AdvanceMetric::kRun); |
| 242 | prevRange = glyphWidths->emplace_back(std::move(curRange)); |
| 243 | curRange = AdvanceMetric(gId); |
| 244 | trailingWildCards = 0; |
| 245 | } |
| 246 | repeatedAdvances = 0; |
| 247 | wildCardsInRun = trailingWildCards; |
| 248 | trailingWildCards = 0; |
| 249 | } else { |
| 250 | if (lastAdvance == 0 && |
| 251 | repeatedAdvances + 1 + wildCardsInRun >= 4) { |
| 252 | FinishRange(&curRange, |
| 253 | gId - repeatedAdvances - wildCardsInRun - 2, |
| 254 | AdvanceMetric::kRange); |
| 255 | prevRange = glyphWidths->emplace_back(std::move(curRange)); |
| 256 | curRange = AdvanceMetric(gId); |
| 257 | trailingWildCards = 0; |
| 258 | } else if (trailingWildCards >= 4 && repeatedAdvances + 1 < 2) { |
| 259 | FinishRange(&curRange, gId - trailingWildCards - 1, |
| 260 | AdvanceMetric::kRange); |
| 261 | prevRange = glyphWidths->emplace_back(std::move(curRange)); |
| 262 | curRange = AdvanceMetric(gId); |
| 263 | trailingWildCards = 0; |
| 264 | } else if (lastAdvance != 0 && |
| 265 | (repeatedAdvances + 1 >= 3 || |
| 266 | (repeatedAdvances + 1 >= 2 && wildCardsInRun >= 3))) { |
| 267 | FinishRange(&curRange, |
| 268 | gId - repeatedAdvances - wildCardsInRun - 2, |
| 269 | AdvanceMetric::kRange); |
| 270 | (void)glyphWidths->emplace_back(std::move(curRange)); |
| 271 | curRange = |
| 272 | AdvanceMetric(gId - repeatedAdvances - wildCardsInRun - 1); |
| 273 | curRange.fAdvance.append(1, &lastAdvance); |
| 274 | FinishRange(&curRange, gId - 1, AdvanceMetric::kRun); |
| 275 | prevRange = glyphWidths->emplace_back(std::move(curRange)); |
| 276 | curRange = AdvanceMetric(gId); |
| 277 | trailingWildCards = 0; |
| 278 | } |
| 279 | repeatedAdvances = 0; |
| 280 | wildCardsInRun = trailingWildCards; |
| 281 | trailingWildCards = 0; |
| 282 | } |
| 283 | curRange.fAdvance.append(1, &advance); |
| 284 | if (advance != kDontCareAdvance) { |
| 285 | lastAdvance = advance; |
| 286 | } |
| 287 | } |
| 288 | if (curRange.fStartId == lastIndex) { |
| 289 | if (!prevRange) { |
| 290 | glyphWidths->reset(); |
| 291 | return; // https://crbug.com/567031 |
| 292 | } |
| 293 | } else { |
| 294 | FinishRange(&curRange, lastIndex - 1, AdvanceMetric::kRange); |
| 295 | glyphWidths->emplace_back(std::move(curRange)); |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | //////////////////////////////////////////////////////////////////////////////// |
| 300 | |
reed@google.com | 3f0dcf9 | 2011-03-18 21:23:45 +0000 | [diff] [blame] | 301 | // scale from em-units to base-1000, returning as a SkScalar |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 302 | SkScalar from_font_units(SkScalar scaled, uint16_t emSize) { |
reed@google.com | 3f0dcf9 | 2011-03-18 21:23:45 +0000 | [diff] [blame] | 303 | if (emSize == 1000) { |
| 304 | return scaled; |
| 305 | } else { |
| 306 | return SkScalarMulDiv(scaled, 1000, emSize); |
| 307 | } |
vandebo@chromium.org | c48b2b3 | 2011-02-02 02:11:22 +0000 | [diff] [blame] | 308 | } |
| 309 | |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 310 | SkScalar scaleFromFontUnits(int16_t val, uint16_t emSize) { |
| 311 | return from_font_units(SkIntToScalar(val), emSize); |
| 312 | } |
| 313 | |
| 314 | |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 315 | void setGlyphWidthAndBoundingBox(SkScalar width, SkIRect box, |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 316 | SkDynamicMemoryWStream* content) { |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 317 | // Specify width and bounding box for the glyph. |
halcanary | bc4696b | 2015-05-06 10:56:04 -0700 | [diff] [blame] | 318 | SkPDFUtils::AppendScalar(width, content); |
vandebo@chromium.org | cae5fba | 2011-03-28 19:03:50 +0000 | [diff] [blame] | 319 | content->writeText(" 0 "); |
| 320 | content->writeDecAsText(box.fLeft); |
| 321 | content->writeText(" "); |
| 322 | content->writeDecAsText(box.fTop); |
| 323 | content->writeText(" "); |
| 324 | content->writeDecAsText(box.fRight); |
| 325 | content->writeText(" "); |
| 326 | content->writeDecAsText(box.fBottom); |
| 327 | content->writeText(" d1\n"); |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 328 | } |
| 329 | |
halcanary | 8103a34 | 2016-03-08 15:10:16 -0800 | [diff] [blame] | 330 | static sk_sp<SkPDFArray> makeFontBBox(SkIRect glyphBBox, uint16_t emSize) { |
| 331 | auto bbox = sk_make_sp<SkPDFArray>(); |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 332 | bbox->reserve(4); |
reed@google.com | c789cf1 | 2011-07-20 12:14:33 +0000 | [diff] [blame] | 333 | bbox->appendScalar(scaleFromFontUnits(glyphBBox.fLeft, emSize)); |
| 334 | bbox->appendScalar(scaleFromFontUnits(glyphBBox.fBottom, emSize)); |
| 335 | bbox->appendScalar(scaleFromFontUnits(glyphBBox.fRight, emSize)); |
| 336 | bbox->appendScalar(scaleFromFontUnits(glyphBBox.fTop, emSize)); |
halcanary | 51d04d3 | 2016-03-08 13:03:55 -0800 | [diff] [blame] | 337 | return bbox; |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 338 | } |
| 339 | |
halcanary | 462d014 | 2016-08-05 13:51:46 -0700 | [diff] [blame] | 340 | sk_sp<SkPDFArray> composeAdvanceData( |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 341 | const SkSinglyLinkedList<AdvanceMetric>& advanceInfo, |
vandebo@chromium.org | c48b2b3 | 2011-02-02 02:11:22 +0000 | [diff] [blame] | 342 | uint16_t emSize, |
halcanary | 462d014 | 2016-08-05 13:51:46 -0700 | [diff] [blame] | 343 | int16_t* defaultAdvance) { |
| 344 | auto result = sk_make_sp<SkPDFArray>(); |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 345 | for (const AdvanceMetric& range : advanceInfo) { |
halcanary | e20a875 | 2016-05-08 18:47:16 -0700 | [diff] [blame] | 346 | switch (range.fType) { |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 347 | case AdvanceMetric::kDefault: { |
halcanary | e20a875 | 2016-05-08 18:47:16 -0700 | [diff] [blame] | 348 | SkASSERT(range.fAdvance.count() == 1); |
| 349 | *defaultAdvance = range.fAdvance[0]; |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 350 | break; |
| 351 | } |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 352 | case AdvanceMetric::kRange: { |
halcanary | ece8392 | 2016-03-08 08:32:12 -0800 | [diff] [blame] | 353 | auto advanceArray = sk_make_sp<SkPDFArray>(); |
halcanary | e20a875 | 2016-05-08 18:47:16 -0700 | [diff] [blame] | 354 | for (int j = 0; j < range.fAdvance.count(); j++) |
halcanary | 462d014 | 2016-08-05 13:51:46 -0700 | [diff] [blame] | 355 | advanceArray->appendScalar( |
| 356 | scaleFromFontUnits(range.fAdvance[j], emSize)); |
halcanary | e20a875 | 2016-05-08 18:47:16 -0700 | [diff] [blame] | 357 | result->appendInt(range.fStartId); |
halcanary | 8103a34 | 2016-03-08 15:10:16 -0800 | [diff] [blame] | 358 | result->appendObject(std::move(advanceArray)); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 359 | break; |
| 360 | } |
halcanary | 8b1d32c | 2016-08-08 09:09:59 -0700 | [diff] [blame] | 361 | case AdvanceMetric::kRun: { |
halcanary | e20a875 | 2016-05-08 18:47:16 -0700 | [diff] [blame] | 362 | SkASSERT(range.fAdvance.count() == 1); |
| 363 | result->appendInt(range.fStartId); |
| 364 | result->appendInt(range.fEndId); |
halcanary | 462d014 | 2016-08-05 13:51:46 -0700 | [diff] [blame] | 365 | result->appendScalar( |
| 366 | scaleFromFontUnits(range.fAdvance[0], emSize)); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 367 | break; |
| 368 | } |
| 369 | } |
| 370 | } |
| 371 | return result; |
| 372 | } |
| 373 | |
| 374 | } // namespace |
| 375 | |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 376 | |
| 377 | /////////////////////////////////////////////////////////////////////////////// |
| 378 | // class SkPDFGlyphSet |
| 379 | /////////////////////////////////////////////////////////////////////////////// |
| 380 | |
| 381 | SkPDFGlyphSet::SkPDFGlyphSet() : fBitSet(SK_MaxU16 + 1) { |
| 382 | } |
| 383 | |
| 384 | void SkPDFGlyphSet::set(const uint16_t* glyphIDs, int numGlyphs) { |
| 385 | for (int i = 0; i < numGlyphs; ++i) { |
| 386 | fBitSet.setBit(glyphIDs[i], true); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | bool SkPDFGlyphSet::has(uint16_t glyphID) const { |
| 391 | return fBitSet.isBitSet(glyphID); |
| 392 | } |
| 393 | |
vandebo@chromium.org | 17e66e2 | 2011-07-27 20:59:55 +0000 | [diff] [blame] | 394 | void SkPDFGlyphSet::exportTo(SkTDArray<unsigned int>* glyphIDs) const { |
| 395 | fBitSet.exportTo(glyphIDs); |
| 396 | } |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 397 | |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 398 | /////////////////////////////////////////////////////////////////////////////// |
| 399 | // class SkPDFGlyphSetMap |
| 400 | /////////////////////////////////////////////////////////////////////////////// |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 401 | |
halcanary | 3c35fb3 | 2016-06-30 11:55:07 -0700 | [diff] [blame] | 402 | SkPDFGlyphSetMap::SkPDFGlyphSetMap() {} |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 403 | |
| 404 | SkPDFGlyphSetMap::~SkPDFGlyphSetMap() { |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 405 | fMap.reset(); |
| 406 | } |
| 407 | |
| 408 | void SkPDFGlyphSetMap::noteGlyphUsage(SkPDFFont* font, const uint16_t* glyphIDs, |
| 409 | int numGlyphs) { |
| 410 | SkPDFGlyphSet* subset = getGlyphSetForFont(font); |
| 411 | if (subset) { |
| 412 | subset->set(glyphIDs, numGlyphs); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | SkPDFGlyphSet* SkPDFGlyphSetMap::getGlyphSetForFont(SkPDFFont* font) { |
| 417 | int index = fMap.count(); |
| 418 | for (int i = 0; i < index; ++i) { |
| 419 | if (fMap[i].fFont == font) { |
halcanary | 3c35fb3 | 2016-06-30 11:55:07 -0700 | [diff] [blame] | 420 | return &fMap[i].fGlyphSet; |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 421 | } |
| 422 | } |
halcanary | 3c35fb3 | 2016-06-30 11:55:07 -0700 | [diff] [blame] | 423 | FontGlyphSetPair& pair = fMap.push_back(); |
| 424 | pair.fFont = font; |
| 425 | return &pair.fGlyphSet; |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 426 | } |
| 427 | |
| 428 | /////////////////////////////////////////////////////////////////////////////// |
| 429 | // class SkPDFFont |
| 430 | /////////////////////////////////////////////////////////////////////////////// |
| 431 | |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 432 | /* Font subset design: It would be nice to be able to subset fonts |
| 433 | * (particularly type 3 fonts), but it's a lot of work and not a priority. |
| 434 | * |
| 435 | * Resources are canonicalized and uniqueified by pointer so there has to be |
| 436 | * some additional state indicating which subset of the font is used. It |
| 437 | * must be maintained at the page granularity and then combined at the document |
| 438 | * granularity. a) change SkPDFFont to fill in its state on demand, kind of |
| 439 | * like SkPDFGraphicState. b) maintain a per font glyph usage class in each |
| 440 | * page/pdf device. c) in the document, retrieve the per font glyph usage |
| 441 | * from each page and combine it and ask for a resource with that subset. |
| 442 | */ |
| 443 | |
halcanary | 2e3f9d8 | 2015-02-27 12:41:03 -0800 | [diff] [blame] | 444 | SkPDFFont::~SkPDFFont() {} |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 445 | |
vandebo | 0f9bad0 | 2014-06-19 11:05:39 -0700 | [diff] [blame] | 446 | bool SkPDFFont::canEmbed() const { |
| 447 | if (!fFontInfo.get()) { |
| 448 | SkASSERT(fFontType == SkAdvancedTypefaceMetrics::kOther_Font); |
| 449 | return true; |
| 450 | } |
| 451 | return (fFontInfo->fFlags & |
| 452 | SkAdvancedTypefaceMetrics::kNotEmbeddable_FontFlag) == 0; |
| 453 | } |
| 454 | |
| 455 | bool SkPDFFont::canSubset() const { |
| 456 | if (!fFontInfo.get()) { |
| 457 | SkASSERT(fFontType == SkAdvancedTypefaceMetrics::kOther_Font); |
| 458 | return true; |
| 459 | } |
| 460 | return (fFontInfo->fFlags & |
| 461 | SkAdvancedTypefaceMetrics::kNotSubsettable_FontFlag) == 0; |
| 462 | } |
| 463 | |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 464 | bool SkPDFFont::hasGlyph(uint16_t id) { |
| 465 | return (id >= fFirstGlyphID && id <= fLastGlyphID) || id == 0; |
| 466 | } |
| 467 | |
halcanary | 4ed2f01 | 2016-08-15 18:40:07 -0700 | [diff] [blame] | 468 | int SkPDFFont::glyphsToPDFFontEncoding(SkGlyphID* glyphIDs, int numGlyphs) const { |
vandebo@chromium.org | 0129410 | 2011-02-28 19:52:18 +0000 | [diff] [blame] | 469 | // A font with multibyte glyphs will support all glyph IDs in a single font. |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 470 | if (this->multiByteGlyphs()) { |
vandebo@chromium.org | 0129410 | 2011-02-28 19:52:18 +0000 | [diff] [blame] | 471 | return numGlyphs; |
| 472 | } |
| 473 | |
reed@google.com | aec4066 | 2014-04-18 19:29:07 +0000 | [diff] [blame] | 474 | for (int i = 0; i < numGlyphs; i++) { |
vandebo@chromium.org | 0129410 | 2011-02-28 19:52:18 +0000 | [diff] [blame] | 475 | if (glyphIDs[i] == 0) { |
| 476 | continue; |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 477 | } |
vandebo@chromium.org | 0129410 | 2011-02-28 19:52:18 +0000 | [diff] [blame] | 478 | if (glyphIDs[i] < fFirstGlyphID || glyphIDs[i] > fLastGlyphID) { |
| 479 | return i; |
| 480 | } |
| 481 | glyphIDs[i] -= (fFirstGlyphID - 1); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 482 | } |
| 483 | |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 484 | return numGlyphs; |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 485 | } |
| 486 | |
halcanary | 4ed2f01 | 2016-08-15 18:40:07 -0700 | [diff] [blame] | 487 | int SkPDFFont::glyphsToPDFFontEncodingCount(const SkGlyphID* glyphIDs, |
| 488 | int numGlyphs) const { |
| 489 | if (this->multiByteGlyphs()) { // A font with multibyte glyphs will |
| 490 | return numGlyphs; // support all glyph IDs in a single font. |
| 491 | } |
| 492 | for (int i = 0; i < numGlyphs; i++) { |
| 493 | if (glyphIDs[i] != 0 && |
| 494 | (glyphIDs[i] < fFirstGlyphID || glyphIDs[i] > fLastGlyphID)) { |
| 495 | return i; |
| 496 | } |
| 497 | } |
| 498 | return numGlyphs; |
| 499 | } |
| 500 | |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 501 | // static |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 502 | SkPDFFont* SkPDFFont::GetFontResource(SkPDFCanon* canon, |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 503 | SkTypeface* face, |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 504 | uint16_t glyphID) { |
| 505 | SkASSERT(canon); |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 506 | const uint32_t fontID = SkTypeface::UniqueID(face); |
halcanary | fb62b3d | 2015-01-21 09:59:14 -0800 | [diff] [blame] | 507 | SkPDFFont* relatedFont; |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 508 | if (SkPDFFont* pdfFont = canon->findFont(fontID, glyphID, &relatedFont)) { |
halcanary | fb62b3d | 2015-01-21 09:59:14 -0800 | [diff] [blame] | 509 | return SkRef(pdfFont); |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 510 | } |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 511 | sk_sp<SkTypeface> typeface(face ? sk_ref_sp(face) : SkTypeface::MakeDefault()); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 512 | SkASSERT(typeface); |
| 513 | int glyphCount = typeface->countGlyphs(); |
| 514 | if (glyphCount < 1 || // typeface lacks even a NOTDEF glyph. |
| 515 | glyphCount > 1 + SK_MaxU16 || // invalid glyphCount |
| 516 | glyphID >= glyphCount) { // invalid glyph |
| 517 | return nullptr; |
| 518 | } |
halcanary | 48810a0 | 2016-03-07 14:57:50 -0800 | [diff] [blame] | 519 | sk_sp<const SkAdvancedTypefaceMetrics> fontMetrics; |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 520 | sk_sp<SkPDFDict> relatedFontDescriptor; |
halcanary | fb62b3d | 2015-01-21 09:59:14 -0800 | [diff] [blame] | 521 | if (relatedFont) { |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 522 | fontMetrics = relatedFont->refFontInfo(); |
| 523 | relatedFontDescriptor = relatedFont->refFontDescriptor(); |
edisonn@google.com | 022e857 | 2012-10-23 21:32:39 +0000 | [diff] [blame] | 524 | |
| 525 | // This only is to catch callers who pass invalid glyph ids. |
| 526 | // If glyph id is invalid, then we will create duplicate entries |
vandebo | 0f9bad0 | 2014-06-19 11:05:39 -0700 | [diff] [blame] | 527 | // for TrueType fonts. |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 528 | SkDEBUGCODE(SkAdvancedTypefaceMetrics::FontType fontType = relatedFont->getType()); |
| 529 | SkASSERT(fontType != SkAdvancedTypefaceMetrics::kType1CID_Font); |
| 530 | SkASSERT(fontType != SkAdvancedTypefaceMetrics::kTrueType_Font); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 531 | } else { |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 532 | SkTypeface::PerGlyphInfo info = SkTypeface::kGlyphNames_PerGlyphInfo | |
| 533 | SkTypeface::kToUnicode_PerGlyphInfo; |
vandebo@chromium.org | d96d17b | 2013-01-04 19:31:24 +0000 | [diff] [blame] | 534 | fontMetrics.reset( |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 535 | typeface->getAdvancedTypefaceMetrics(info, nullptr, 0)); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 536 | } |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 537 | |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 538 | SkAdvancedTypefaceMetrics::FontType type = |
| 539 | fontMetrics ? fontMetrics->fType : SkAdvancedTypefaceMetrics::kOther_Font; |
| 540 | if (fontMetrics && |
| 541 | SkToBool(fontMetrics->fFlags & |
| 542 | SkAdvancedTypefaceMetrics::kMultiMaster_FontFlag)) { |
| 543 | // force Type3 fallback. |
| 544 | type = SkAdvancedTypefaceMetrics::kOther_Font; |
| 545 | } |
| 546 | |
| 547 | sk_sp<SkPDFFont> font; |
| 548 | switch (type) { |
| 549 | case SkAdvancedTypefaceMetrics::kType1CID_Font: |
| 550 | case SkAdvancedTypefaceMetrics::kTrueType_Font: |
| 551 | SkASSERT(relatedFontDescriptor == nullptr); |
| 552 | SkASSERT(fontMetrics != nullptr); |
| 553 | font = sk_make_sp<SkPDFType0Font>(std::move(fontMetrics), |
| 554 | std::move(typeface), |
| 555 | type); |
| 556 | break; |
| 557 | case SkAdvancedTypefaceMetrics::kType1_Font: |
| 558 | SkASSERT(fontMetrics != nullptr); |
| 559 | font = sk_make_sp<SkPDFType1Font>(std::move(fontMetrics), |
| 560 | std::move(typeface), |
| 561 | glyphID, |
| 562 | std::move(relatedFontDescriptor)); |
| 563 | break; |
| 564 | case SkAdvancedTypefaceMetrics::kCFF_Font: |
| 565 | SkASSERT(fontMetrics != nullptr); |
| 566 | // fallthrough |
| 567 | case SkAdvancedTypefaceMetrics::kOther_Font: |
| 568 | font = sk_make_sp<SkPDFType3Font>(std::move(fontMetrics), |
| 569 | std::move(typeface), |
| 570 | type, |
| 571 | glyphID); |
| 572 | break; |
| 573 | default: |
| 574 | SkDEBUGFAIL("invalid SkAdvancedTypefaceMetrics::FontType"); |
| 575 | return nullptr; |
| 576 | } |
| 577 | // When firstGlyphID==0, SkFont::IsMatch() matches all glyphs in font. |
| 578 | SkGlyphID firstGlyphID = font->multiByteGlyphs() ? 0 : font->fFirstGlyphID; |
| 579 | // TODO(halcanary) Make SkCanon::addFont take sk_sp<SkPDFFont>. |
| 580 | canon->addFont(font.get(), fontID, firstGlyphID); |
| 581 | return font.release(); // TODO(halcanary) return sk_sp<SkPDFFont>. |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 582 | } |
| 583 | |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 584 | sk_sp<SkPDFObject> SkPDFFont::getFontSubset(const SkPDFGlyphSet*) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 585 | return nullptr; // Default: no support. |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 586 | } |
| 587 | |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 588 | // TODO: take a sk_sp<SkAdvancedTypefaceMetrics> and sk_sp<SkTypeface> |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 589 | SkPDFFont::SkPDFFont(sk_sp<const SkAdvancedTypefaceMetrics> info, |
| 590 | sk_sp<SkTypeface> typeface, |
| 591 | sk_sp<SkPDFDict> relatedFontDescriptor, |
| 592 | SkAdvancedTypefaceMetrics::FontType fontType, |
| 593 | bool multiByteGlyphs) |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 594 | : SkPDFDict("Font") |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 595 | , fTypeface(std::move(typeface)) |
| 596 | , fFontInfo(std::move(info)) |
| 597 | , fDescriptor(std::move(relatedFontDescriptor)) |
halcanary | 792c80f | 2015-02-20 07:21:05 -0800 | [diff] [blame] | 598 | , fFirstGlyphID(1) |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 599 | , fFontType(fontType) |
| 600 | , fMultiByteGlyphs(multiByteGlyphs) { |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 601 | SkASSERT(fTypeface); |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 602 | fLastGlyphID = fFontInfo ? fFontInfo->fLastGlyphID : 0; |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 603 | if (0 == fLastGlyphID) { |
| 604 | fLastGlyphID = SkToU16(fTypeface->countGlyphs() - 1); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 605 | } |
| 606 | } |
| 607 | |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 608 | void SkPDFFont::setFontInfo(sk_sp<const SkAdvancedTypefaceMetrics> info) { |
| 609 | if (info) { |
| 610 | fFontInfo = std::move(info); |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 611 | } |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 612 | } |
| 613 | |
| 614 | void SkPDFFont::setLastGlyphID(uint16_t glyphID) { |
| 615 | fLastGlyphID = glyphID; |
| 616 | } |
| 617 | |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 618 | void SkPDFFont::setFontDescriptor(sk_sp<SkPDFDict> descriptor) { |
| 619 | fDescriptor = std::move(descriptor); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 620 | } |
| 621 | |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 622 | static void add_common_font_descriptor_entries(SkPDFDict* descriptor, |
| 623 | const SkAdvancedTypefaceMetrics& metrics, |
| 624 | int16_t defaultWidth) { |
| 625 | const uint16_t emSize = metrics.fEmSize; |
| 626 | descriptor->insertName("FontName", metrics.fFontName); |
| 627 | descriptor->insertInt("Flags", (size_t)(metrics.fStyle | kPdfSymbolic)); |
| 628 | descriptor->insertScalar("Ascent", |
| 629 | scaleFromFontUnits(metrics.fAscent, emSize)); |
| 630 | descriptor->insertScalar("Descent", |
| 631 | scaleFromFontUnits(metrics.fDescent, emSize)); |
| 632 | descriptor->insertScalar("StemV", |
| 633 | scaleFromFontUnits(metrics.fStemV, emSize)); |
| 634 | descriptor->insertScalar("CapHeight", |
| 635 | scaleFromFontUnits(metrics.fCapHeight, emSize)); |
| 636 | descriptor->insertInt("ItalicAngle", metrics.fItalicAngle); |
| 637 | descriptor->insertObject( |
| 638 | "FontBBox", makeFontBBox(metrics.fBBox, metrics.fEmSize)); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 639 | if (defaultWidth > 0) { |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 640 | descriptor->insertScalar("MissingWidth", |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 641 | scaleFromFontUnits(defaultWidth, emSize)); |
| 642 | } |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 643 | } |
| 644 | |
bungeman | 22edc83 | 2014-10-03 07:55:58 -0700 | [diff] [blame] | 645 | void SkPDFFont::adjustGlyphRangeForSingleByteEncoding(uint16_t glyphID) { |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 646 | // Single byte glyph encoding supports a max of 255 glyphs. |
| 647 | fFirstGlyphID = glyphID - (glyphID - 1) % 255; |
| 648 | if (fLastGlyphID > fFirstGlyphID + 255 - 1) { |
| 649 | fLastGlyphID = fFirstGlyphID + 255 - 1; |
| 650 | } |
| 651 | } |
| 652 | |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 653 | void SkPDFFont::populateToUnicodeTable(const SkPDFGlyphSet* subset) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 654 | if (fFontInfo == nullptr || fFontInfo->fGlyphToUnicode.begin() == nullptr) { |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 655 | return; |
| 656 | } |
halcanary | bf51cfd | 2015-05-05 10:24:09 -0700 | [diff] [blame] | 657 | this->insertObjRef("ToUnicode", |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 658 | SkPDFMakeToUnicodeCmap(fFontInfo->fGlyphToUnicode, |
| 659 | subset, |
| 660 | multiByteGlyphs(), |
| 661 | firstGlyphID(), |
| 662 | lastGlyphID())); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 663 | } |
| 664 | |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 665 | /////////////////////////////////////////////////////////////////////////////// |
| 666 | // class SkPDFType0Font |
| 667 | /////////////////////////////////////////////////////////////////////////////// |
vandebo@chromium.org | f7c1576 | 2011-02-01 22:19:44 +0000 | [diff] [blame] | 668 | |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 669 | SkPDFType0Font::SkPDFType0Font(sk_sp<const SkAdvancedTypefaceMetrics> info, |
| 670 | sk_sp<SkTypeface> typeface, |
| 671 | SkAdvancedTypefaceMetrics::FontType fontType) |
| 672 | : SkPDFFont(std::move(info), std::move(typeface), nullptr, fontType, true) { |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 673 | SkDEBUGCODE(fPopulated = false); |
vandebo | 0f9bad0 | 2014-06-19 11:05:39 -0700 | [diff] [blame] | 674 | if (!canSubset()) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 675 | this->populate(nullptr); |
vandebo | 0f9bad0 | 2014-06-19 11:05:39 -0700 | [diff] [blame] | 676 | } |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 677 | } |
| 678 | |
| 679 | SkPDFType0Font::~SkPDFType0Font() {} |
| 680 | |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 681 | sk_sp<SkPDFObject> SkPDFType0Font::getFontSubset(const SkPDFGlyphSet* subset) { |
vandebo | 0f9bad0 | 2014-06-19 11:05:39 -0700 | [diff] [blame] | 682 | if (!canSubset()) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 683 | return nullptr; |
vandebo | 0f9bad0 | 2014-06-19 11:05:39 -0700 | [diff] [blame] | 684 | } |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 685 | auto newSubset = sk_make_sp<SkPDFType0Font>(refFontInfo(), refTypeface(), getType()); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 686 | newSubset->populate(subset); |
| 687 | return newSubset; |
| 688 | } |
| 689 | |
| 690 | #ifdef SK_DEBUG |
halcanary | 37c46ca | 2015-03-31 12:30:20 -0700 | [diff] [blame] | 691 | void SkPDFType0Font::emitObject(SkWStream* stream, |
| 692 | const SkPDFObjNumMap& objNumMap, |
halcanary | a060eba | 2015-08-19 12:26:46 -0700 | [diff] [blame] | 693 | const SkPDFSubstituteMap& substitutes) const { |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 694 | SkASSERT(fPopulated); |
halcanary | 37c46ca | 2015-03-31 12:30:20 -0700 | [diff] [blame] | 695 | return INHERITED::emitObject(stream, objNumMap, substitutes); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 696 | } |
| 697 | #endif |
| 698 | |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 699 | #ifdef SK_SFNTLY_SUBSETTER |
| 700 | // if possible, make no copy. |
| 701 | static sk_sp<SkData> stream_to_data(std::unique_ptr<SkStreamAsset> stream) { |
| 702 | SkASSERT(stream); |
| 703 | (void)stream->rewind(); |
| 704 | SkASSERT(stream->hasLength()); |
| 705 | size_t size = stream->getLength(); |
| 706 | if (const void* base = stream->getMemoryBase()) { |
| 707 | SkData::ReleaseProc proc = |
| 708 | [](const void*, void* ctx) { delete (SkStream*)ctx; }; |
| 709 | return SkData::MakeWithProc(base, size, proc, stream.release()); |
| 710 | } |
| 711 | return SkData::MakeFromStream(stream.get(), size); |
| 712 | } |
| 713 | |
| 714 | static sk_sp<SkPDFObject> get_subset_font_stream( |
| 715 | std::unique_ptr<SkStreamAsset> fontAsset, |
| 716 | const SkTDArray<uint32_t>& subset, |
| 717 | const char* fontName) { |
| 718 | // sfntly requires unsigned int* to be passed in, |
| 719 | // as far as we know, unsigned int is equivalent |
| 720 | // to uint32_t on all platforms. |
| 721 | static_assert(sizeof(unsigned) == sizeof(uint32_t), ""); |
| 722 | |
| 723 | // TODO(halcanary): Use ttcIndex, not fontName. |
| 724 | |
| 725 | unsigned char* subsetFont{nullptr}; |
| 726 | int subsetFontSize{0}; |
| 727 | { |
| 728 | sk_sp<SkData> fontData(stream_to_data(std::move(fontAsset))); |
| 729 | subsetFontSize = |
| 730 | SfntlyWrapper::SubsetFont(fontName, |
| 731 | fontData->bytes(), |
| 732 | fontData->size(), |
| 733 | subset.begin(), |
| 734 | subset.count(), |
| 735 | &subsetFont); |
| 736 | } |
| 737 | SkASSERT(subsetFontSize > 0 || subsetFont == nullptr); |
| 738 | if (subsetFontSize < 1) { |
| 739 | return nullptr; |
| 740 | } |
| 741 | SkASSERT(subsetFont != nullptr); |
| 742 | auto subsetStream = sk_make_sp<SkPDFStream>( |
| 743 | SkData::MakeWithProc( |
| 744 | subsetFont, subsetFontSize, |
| 745 | [](const void* p, void*) { delete[] (unsigned char*)p; }, |
| 746 | nullptr)); |
halcanary | fa25106 | 2016-07-29 10:13:18 -0700 | [diff] [blame] | 747 | subsetStream->dict()->insertInt("Length1", subsetFontSize); |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 748 | return subsetStream; |
| 749 | } |
| 750 | #endif // SK_SFNTLY_SUBSETTER |
| 751 | |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 752 | bool SkPDFType0Font::populate(const SkPDFGlyphSet* subset) { |
halcanary | 66a82f3 | 2015-10-12 13:05:04 -0700 | [diff] [blame] | 753 | SkASSERT(this->canEmbed()); |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 754 | SkASSERT(this->getFontInfo()); |
| 755 | const SkAdvancedTypefaceMetrics& metrics = *(this->getFontInfo()); |
| 756 | SkAdvancedTypefaceMetrics::FontType type = this->getType(); |
| 757 | SkTypeface* face = this->typeface(); |
| 758 | SkASSERT(face); |
halcanary | 6c80a9d | 2016-08-16 11:54:57 -0700 | [diff] [blame^] | 759 | const SkString& name = metrics.fFontName; |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 760 | |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 761 | auto descriptor = sk_make_sp<SkPDFDict>("FontDescriptor"); |
| 762 | add_common_font_descriptor_entries(descriptor.get(), metrics, 0); |
| 763 | switch (type) { |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 764 | case SkAdvancedTypefaceMetrics::kTrueType_Font: { |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 765 | int ttcIndex; |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 766 | std::unique_ptr<SkStreamAsset> fontAsset(face->openStream(&ttcIndex)); |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 767 | SkASSERT(fontAsset); |
| 768 | if (!fontAsset) { |
halcanary | 3243143 | 2016-03-30 12:59:14 -0700 | [diff] [blame] | 769 | return false; |
| 770 | } |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 771 | size_t fontSize = fontAsset->getLength(); |
halcanary | 725c620 | 2015-08-20 08:09:37 -0700 | [diff] [blame] | 772 | SkASSERT(fontSize > 0); |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 773 | if (fontSize == 0) { |
| 774 | return false; |
| 775 | } |
| 776 | |
| 777 | #ifdef SK_SFNTLY_SUBSETTER |
| 778 | if (this->canSubset() && subset) { |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 779 | // Generate glyph id array. in format needed by sfntly |
| 780 | SkTDArray<uint32_t> glyphIDs; |
| 781 | if (subset) { |
| 782 | if (!subset->has(0)) { |
| 783 | glyphIDs.push(0); // Always include glyph 0. |
| 784 | } |
| 785 | subset->exportTo(&glyphIDs); |
| 786 | } |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 787 | sk_sp<SkPDFObject> subsetStream = get_subset_font_stream( |
halcanary | 6c80a9d | 2016-08-16 11:54:57 -0700 | [diff] [blame^] | 788 | std::move(fontAsset), glyphIDs, name.c_str()); |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 789 | if (subsetStream) { |
| 790 | descriptor->insertObjRef("FontFile2", std::move(subsetStream)); |
| 791 | break; |
| 792 | } |
| 793 | // If subsetting fails, fall back to original font data. |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 794 | fontAsset.reset(face->openStream(&ttcIndex)); |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 795 | } |
| 796 | #endif // SK_SFNTLY_SUBSETTER |
halcanary | fa25106 | 2016-07-29 10:13:18 -0700 | [diff] [blame] | 797 | auto fontStream = sk_make_sp<SkPDFSharedStream>(std::move(fontAsset)); |
halcanary | 725c620 | 2015-08-20 08:09:37 -0700 | [diff] [blame] | 798 | fontStream->dict()->insertInt("Length1", fontSize); |
halcanary | 8103a34 | 2016-03-08 15:10:16 -0800 | [diff] [blame] | 799 | descriptor->insertObjRef("FontFile2", std::move(fontStream)); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 800 | break; |
| 801 | } |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 802 | case SkAdvancedTypefaceMetrics::kType1CID_Font: { |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 803 | std::unique_ptr<SkStreamAsset> fontData(face->openStream(nullptr)); |
halcanary | 3243143 | 2016-03-30 12:59:14 -0700 | [diff] [blame] | 804 | SkASSERT(fontData); |
| 805 | SkASSERT(fontData->getLength() > 0); |
| 806 | if (!fontData || 0 == fontData->getLength()) { |
| 807 | return false; |
| 808 | } |
halcanary | fa25106 | 2016-07-29 10:13:18 -0700 | [diff] [blame] | 809 | auto fontStream = sk_make_sp<SkPDFSharedStream>(std::move(fontData)); |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 810 | fontStream->dict()->insertName("Subtype", "CIDFontType0c"); |
halcanary | 8103a34 | 2016-03-08 15:10:16 -0800 | [diff] [blame] | 811 | descriptor->insertObjRef("FontFile3", std::move(fontStream)); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 812 | break; |
| 813 | } |
| 814 | default: |
| 815 | SkASSERT(false); |
| 816 | } |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 817 | |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 818 | auto newCIDFont = sk_make_sp<SkPDFDict>("Font"); |
| 819 | newCIDFont->insertObjRef("FontDescriptor", std::move(descriptor)); |
| 820 | newCIDFont->insertName("BaseFont", name); |
| 821 | |
| 822 | if (type == SkAdvancedTypefaceMetrics::kType1CID_Font) { |
| 823 | newCIDFont->insertName("Subtype", "CIDFontType0"); |
| 824 | } else if (type == SkAdvancedTypefaceMetrics::kTrueType_Font) { |
| 825 | newCIDFont->insertName("Subtype", "CIDFontType2"); |
| 826 | newCIDFont->insertName("CIDToGIDMap", "Identity"); |
halcanary | 462d014 | 2016-08-05 13:51:46 -0700 | [diff] [blame] | 827 | } else { |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 828 | SkASSERT(false); |
halcanary | 462d014 | 2016-08-05 13:51:46 -0700 | [diff] [blame] | 829 | } |
halcanary | 462d014 | 2016-08-05 13:51:46 -0700 | [diff] [blame] | 830 | |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 831 | auto sysInfo = sk_make_sp<SkPDFDict>(); |
| 832 | sysInfo->insertString("Registry", "Adobe"); |
| 833 | sysInfo->insertString("Ordering", "Identity"); |
| 834 | sysInfo->insertInt("Supplement", 0); |
| 835 | newCIDFont->insertObject("CIDSystemInfo", std::move(sysInfo)); |
| 836 | |
| 837 | SkSinglyLinkedList<AdvanceMetric> tmpMetrics; |
| 838 | set_glyph_widths(face, subset, &tmpMetrics); |
| 839 | int16_t defaultWidth = 0; |
| 840 | uint16_t emSize = (uint16_t)this->getFontInfo()->fEmSize; |
| 841 | sk_sp<SkPDFArray> widths = composeAdvanceData(tmpMetrics, emSize, &defaultWidth); |
| 842 | if (widths->size()) { |
| 843 | newCIDFont->insertObject("W", std::move(widths)); |
| 844 | } |
| 845 | |
| 846 | newCIDFont->insertScalar( |
| 847 | "DW", scaleFromFontUnits(defaultWidth, emSize)); |
| 848 | |
| 849 | |
| 850 | //////////////////////////////////////////////////////////////////////////// |
| 851 | |
| 852 | this->insertName("Subtype", "Type0"); |
| 853 | this->insertName("BaseFont", metrics.fFontName); |
| 854 | this->insertName("Encoding", "Identity-H"); |
| 855 | auto descendantFonts = sk_make_sp<SkPDFArray>(); |
| 856 | descendantFonts->appendObjRef(std::move(newCIDFont)); |
| 857 | this->insertObject("DescendantFonts", std::move(descendantFonts)); |
| 858 | this->populateToUnicodeTable(subset); |
| 859 | SkDEBUGCODE(fPopulated = true); |
| 860 | return true; |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 861 | } |
| 862 | |
| 863 | sk_sp<const SkAdvancedTypefaceMetrics> SkPDFFont::GetFontMetricsWithToUnicode( |
| 864 | SkTypeface* typeface, uint32_t* glyphs, uint32_t glyphsCount) { |
| 865 | return sk_sp<const SkAdvancedTypefaceMetrics>( |
| 866 | typeface->getAdvancedTypefaceMetrics( |
| 867 | SkTypeface::kToUnicode_PerGlyphInfo, glyphs, glyphsCount)); |
| 868 | } |
| 869 | |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 870 | |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 871 | /////////////////////////////////////////////////////////////////////////////// |
| 872 | // class SkPDFType1Font |
| 873 | /////////////////////////////////////////////////////////////////////////////// |
| 874 | |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 875 | SkPDFType1Font::SkPDFType1Font(sk_sp<const SkAdvancedTypefaceMetrics> info, |
| 876 | sk_sp<SkTypeface> typeface, |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 877 | uint16_t glyphID, |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 878 | sk_sp<SkPDFDict> relatedFontDescriptor) |
| 879 | : SkPDFFont(std::move(info), |
| 880 | std::move(typeface), |
| 881 | std::move(relatedFontDescriptor), |
| 882 | SkAdvancedTypefaceMetrics::kType1_Font, |
| 883 | /* multiByteGlyphs = */ false) { |
| 884 | this->populate(glyphID); // TODO(halcanary): subset this. |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 885 | } |
| 886 | |
| 887 | SkPDFType1Font::~SkPDFType1Font() {} |
| 888 | |
| 889 | bool SkPDFType1Font::addFontDescriptor(int16_t defaultWidth) { |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 890 | if (sk_sp<SkPDFDict> descriptor = this->refFontDescriptor()) { |
| 891 | this->insertObjRef("FontDescriptor", std::move(descriptor)); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 892 | return true; |
| 893 | } |
| 894 | |
halcanary | ece8392 | 2016-03-08 08:32:12 -0800 | [diff] [blame] | 895 | auto descriptor = sk_make_sp<SkPDFDict>("FontDescriptor"); |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 896 | setFontDescriptor(descriptor); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 897 | |
reed@google.com | fed86bd | 2013-03-14 15:04:57 +0000 | [diff] [blame] | 898 | int ttcIndex; |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 899 | size_t header SK_INIT_TO_AVOID_WARNING; |
| 900 | size_t data SK_INIT_TO_AVOID_WARNING; |
| 901 | size_t trailer SK_INIT_TO_AVOID_WARNING; |
halcanary | 3243143 | 2016-03-30 12:59:14 -0700 | [diff] [blame] | 902 | std::unique_ptr<SkStreamAsset> rawFontData(typeface()->openStream(&ttcIndex)); |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 903 | sk_sp<SkData> fontData = SkPDFConvertType1FontStream(std::move(rawFontData), |
| 904 | &header, &data, &trailer); |
| 905 | if (!fontData) { |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 906 | return false; |
| 907 | } |
halcanary | 66a82f3 | 2015-10-12 13:05:04 -0700 | [diff] [blame] | 908 | SkASSERT(this->canEmbed()); |
halcanary | fe8f0e0 | 2016-07-27 14:14:04 -0700 | [diff] [blame] | 909 | auto fontStream = sk_make_sp<SkPDFStream>(std::move(fontData)); |
halcanary | fa25106 | 2016-07-29 10:13:18 -0700 | [diff] [blame] | 910 | fontStream->dict()->insertInt("Length1", header); |
| 911 | fontStream->dict()->insertInt("Length2", data); |
| 912 | fontStream->dict()->insertInt("Length3", trailer); |
halcanary | 8103a34 | 2016-03-08 15:10:16 -0800 | [diff] [blame] | 913 | descriptor->insertObjRef("FontFile", std::move(fontStream)); |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 914 | |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 915 | SkASSERT(this->getFontInfo()); |
| 916 | add_common_font_descriptor_entries(descriptor.get(), |
| 917 | *this->getFontInfo(), |
| 918 | defaultWidth); |
halcanary | 8103a34 | 2016-03-08 15:10:16 -0800 | [diff] [blame] | 919 | this->insertObjRef("FontDescriptor", std::move(descriptor)); |
halcanary | 28c6d83 | 2016-08-16 10:29:38 -0700 | [diff] [blame] | 920 | return true; |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 921 | } |
| 922 | |
| 923 | bool SkPDFType1Font::populate(int16_t glyphID) { |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 924 | this->insertName("Subtype", "Type1"); |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 925 | this->insertName("BaseFont", this->getFontInfo()->fFontName); |
vandebo@chromium.org | f77e27d | 2011-03-10 22:50:28 +0000 | [diff] [blame] | 926 | adjustGlyphRangeForSingleByteEncoding(glyphID); |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 927 | SkGlyphID firstGlyphID = this->firstGlyphID(); |
| 928 | SkGlyphID lastGlyphID = this->lastGlyphID(); |
vandebo@chromium.org | f77e27d | 2011-03-10 22:50:28 +0000 | [diff] [blame] | 929 | |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 930 | // glyphCount not including glyph 0 |
| 931 | unsigned glyphCount = 1 + lastGlyphID - firstGlyphID; |
| 932 | SkASSERT(glyphCount > 0 && glyphCount <= 255); |
| 933 | this->insertInt("FirstChar", (size_t)0); |
| 934 | this->insertInt("LastChar", (size_t)glyphCount); |
halcanary | 462d014 | 2016-08-05 13:51:46 -0700 | [diff] [blame] | 935 | { |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 936 | SkPaint tmpPaint; |
| 937 | tmpPaint.setHinting(SkPaint::kNo_Hinting); |
| 938 | tmpPaint.setTypeface(sk_ref_sp(this->typeface())); |
| 939 | tmpPaint.setTextSize((SkScalar)this->typeface()->getUnitsPerEm()); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 940 | const SkSurfaceProps props(0, kUnknown_SkPixelGeometry); |
| 941 | SkAutoGlyphCache glyphCache(tmpPaint, &props, nullptr); |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 942 | auto widths = sk_make_sp<SkPDFArray>(); |
| 943 | SkScalar advance = glyphCache->getGlyphIDAdvance(0).fAdvanceX; |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 944 | const uint16_t emSize = this->getFontInfo()->fEmSize; |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 945 | widths->appendScalar(from_font_units(advance, emSize)); |
| 946 | for (unsigned gID = firstGlyphID; gID <= lastGlyphID; gID++) { |
| 947 | advance = glyphCache->getGlyphIDAdvance(gID).fAdvanceX; |
| 948 | widths->appendScalar(from_font_units(advance, emSize)); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 949 | } |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 950 | this->insertObject("Widths", std::move(widths)); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 951 | } |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 952 | if (!addFontDescriptor(0)) { |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 953 | return false; |
ctguil@chromium.org | 769fa6a | 2011-08-20 00:36:18 +0000 | [diff] [blame] | 954 | } |
halcanary | ece8392 | 2016-03-08 08:32:12 -0800 | [diff] [blame] | 955 | auto encDiffs = sk_make_sp<SkPDFArray>(); |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 956 | encDiffs->reserve(lastGlyphID - firstGlyphID + 3); |
| 957 | encDiffs->appendInt(0); |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 958 | const SkTArray<SkString>& glyphNames = this->getFontInfo()->fGlyphNames; |
halcanary | 8eccc30 | 2016-08-09 13:04:34 -0700 | [diff] [blame] | 959 | SkASSERT(glyphNames.count() > lastGlyphID); |
| 960 | encDiffs->appendName(glyphNames[0].c_str()); |
| 961 | const SkString unknown("UNKNOWN"); |
| 962 | for (int gID = firstGlyphID; gID <= lastGlyphID; gID++) { |
| 963 | const bool valid = gID < glyphNames.count() && !glyphNames[gID].isEmpty(); |
| 964 | const SkString& name = valid ? glyphNames[gID] : unknown; |
| 965 | encDiffs->appendName(name); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 966 | } |
| 967 | |
halcanary | ece8392 | 2016-03-08 08:32:12 -0800 | [diff] [blame] | 968 | auto encoding = sk_make_sp<SkPDFDict>("Encoding"); |
halcanary | 8103a34 | 2016-03-08 15:10:16 -0800 | [diff] [blame] | 969 | encoding->insertObject("Differences", std::move(encDiffs)); |
| 970 | this->insertObject("Encoding", std::move(encoding)); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 971 | return true; |
vandebo@chromium.org | 28be72b | 2010-11-11 21:37:00 +0000 | [diff] [blame] | 972 | } |
| 973 | |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 974 | /////////////////////////////////////////////////////////////////////////////// |
| 975 | // class SkPDFType3Font |
| 976 | /////////////////////////////////////////////////////////////////////////////// |
| 977 | |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 978 | namespace { |
| 979 | // returns [0, first, first+1, ... last-1, last] |
| 980 | struct SingleByteGlyphIdIterator { |
| 981 | SingleByteGlyphIdIterator(SkGlyphID first, SkGlyphID last) |
| 982 | : fFirst(first), fLast(last) { |
| 983 | SkASSERT(fFirst > 0); |
| 984 | SkASSERT(fLast >= first); |
| 985 | } |
| 986 | struct Iter { |
| 987 | void operator++() { |
| 988 | fCurrent = (0 == fCurrent) ? fFirst : fCurrent + 1; |
| 989 | } |
| 990 | // This is an input_iterator |
| 991 | SkGlyphID operator*() const { return (SkGlyphID)fCurrent; } |
| 992 | bool operator!=(const Iter& rhs) const { |
| 993 | return fCurrent != rhs.fCurrent; |
| 994 | } |
| 995 | Iter(SkGlyphID f, int c) : fFirst(f), fCurrent(c) {} |
| 996 | private: |
| 997 | const SkGlyphID fFirst; |
| 998 | int fCurrent; // must be int to make fLast+1 to fit |
| 999 | }; |
| 1000 | Iter begin() const { return Iter(fFirst, 0); } |
| 1001 | Iter end() const { return Iter(fFirst, (int)fLast + 1); } |
| 1002 | private: |
| 1003 | const SkGlyphID fFirst; |
| 1004 | const SkGlyphID fLast; |
| 1005 | }; |
vandebo@chromium.org | 9859428 | 2011-07-25 22:34:12 +0000 | [diff] [blame] | 1006 | } |
| 1007 | |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1008 | static void add_type3_font_info(SkPDFDict* font, |
| 1009 | SkTypeface* typeface, |
| 1010 | SkScalar emSize, |
| 1011 | const SkPDFGlyphSet* subset, |
| 1012 | SkGlyphID firstGlyphID, |
| 1013 | SkGlyphID lastGlyphID) { |
| 1014 | SkASSERT(lastGlyphID >= firstGlyphID); |
halcanary | 5bf60ad | 2016-08-11 13:59:18 -0700 | [diff] [blame] | 1015 | SkPaint paint; |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1016 | paint.setHinting(SkPaint::kNo_Hinting); |
| 1017 | paint.setTypeface(sk_ref_sp(typeface)); |
| 1018 | paint.setTextSize(emSize); |
halcanary | 5bf60ad | 2016-08-11 13:59:18 -0700 | [diff] [blame] | 1019 | const SkSurfaceProps props(0, kUnknown_SkPixelGeometry); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1020 | SkAutoGlyphCache cache(paint, &props, nullptr); |
halcanary | 5bf60ad | 2016-08-11 13:59:18 -0700 | [diff] [blame] | 1021 | |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1022 | font->insertName("Subtype", "Type3"); |
| 1023 | // Flip about the x-axis and scale by 1/emSize. |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 1024 | SkMatrix fontMatrix; |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1025 | fontMatrix.setScale(SkScalarInvert(emSize), -SkScalarInvert(emSize)); |
| 1026 | font->insertObject("FontMatrix", SkPDFUtils::MatrixToArray(fontMatrix)); |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 1027 | |
halcanary | ece8392 | 2016-03-08 08:32:12 -0800 | [diff] [blame] | 1028 | auto charProcs = sk_make_sp<SkPDFDict>(); |
| 1029 | auto encoding = sk_make_sp<SkPDFDict>("Encoding"); |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 1030 | |
halcanary | ece8392 | 2016-03-08 08:32:12 -0800 | [diff] [blame] | 1031 | auto encDiffs = sk_make_sp<SkPDFArray>(); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1032 | // length(firstGlyphID .. lastGlyphID) == lastGlyphID - firstGlyphID + 1 |
| 1033 | // plus 1 for glyph 0; |
| 1034 | SkASSERT(firstGlyphID > 0); |
| 1035 | SkASSERT(lastGlyphID >= firstGlyphID); |
| 1036 | int glyphCount = lastGlyphID - firstGlyphID + 2; |
| 1037 | // one other entry for the index of first glyph. |
| 1038 | encDiffs->reserve(glyphCount + 1); |
| 1039 | encDiffs->appendInt(0); // index of first glyph |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 1040 | |
halcanary | ece8392 | 2016-03-08 08:32:12 -0800 | [diff] [blame] | 1041 | auto widthArray = sk_make_sp<SkPDFArray>(); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1042 | widthArray->reserve(glyphCount); |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 1043 | |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 1044 | SkIRect bbox = SkIRect::MakeEmpty(); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1045 | |
| 1046 | sk_sp<SkPDFStream> emptyStream; |
| 1047 | for (SkGlyphID gID : SingleByteGlyphIdIterator(firstGlyphID, lastGlyphID)) { |
| 1048 | bool skipGlyph = subset && gID != 0 && !subset->has(gID); |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 1049 | SkString characterName; |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1050 | SkScalar advance = 0.0f; |
| 1051 | SkIRect glyphBBox; |
| 1052 | if (skipGlyph) { |
| 1053 | characterName.set("g0"); |
| 1054 | } else { |
| 1055 | characterName.printf("g%X", gID); |
| 1056 | const SkGlyph& glyph = cache->getGlyphIDMetrics(gID); |
| 1057 | advance = SkFloatToScalar(glyph.fAdvanceX); |
| 1058 | glyphBBox = SkIRect::MakeXYWH(glyph.fLeft, glyph.fTop, |
| 1059 | glyph.fWidth, glyph.fHeight); |
| 1060 | bbox.join(glyphBBox); |
| 1061 | const SkPath* path = cache->findPath(glyph); |
| 1062 | if (path && !path->isEmpty()) { |
| 1063 | SkDynamicMemoryWStream content; |
| 1064 | setGlyphWidthAndBoundingBox(SkFloatToScalar(glyph.fAdvanceX), glyphBBox, |
| 1065 | &content); |
| 1066 | SkPDFUtils::EmitPath(*path, SkPaint::kFill_Style, &content); |
| 1067 | SkPDFUtils::PaintPath(SkPaint::kFill_Style, path->getFillType(), |
| 1068 | &content); |
| 1069 | charProcs->insertObjRef( |
| 1070 | characterName, sk_make_sp<SkPDFStream>( |
| 1071 | std::unique_ptr<SkStreamAsset>(content.detachAsStream()))); |
| 1072 | } else { |
| 1073 | if (!emptyStream) { |
| 1074 | emptyStream = sk_make_sp<SkPDFStream>( |
| 1075 | std::unique_ptr<SkStreamAsset>( |
| 1076 | new SkMemoryStream((size_t)0))); |
| 1077 | } |
| 1078 | charProcs->insertObjRef(characterName, emptyStream); |
| 1079 | } |
halcanary | 5bf60ad | 2016-08-11 13:59:18 -0700 | [diff] [blame] | 1080 | } |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1081 | encDiffs->appendName(characterName.c_str()); |
| 1082 | widthArray->appendScalar(advance); |
ctguil@chromium.org | 9db86bb | 2011-03-04 21:43:27 +0000 | [diff] [blame] | 1083 | } |
| 1084 | |
halcanary | 8103a34 | 2016-03-08 15:10:16 -0800 | [diff] [blame] | 1085 | encoding->insertObject("Differences", std::move(encDiffs)); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1086 | font->insertInt("FirstChar", 0); |
| 1087 | font->insertInt("LastChar", lastGlyphID - firstGlyphID + 1); |
| 1088 | /* FontBBox: "A rectangle expressed in the glyph coordinate |
| 1089 | system, specifying the font bounding box. This is the smallest |
| 1090 | rectangle enclosing the shape that would result if all of the |
| 1091 | glyphs of the font were placed with their origins coincident and |
| 1092 | then filled." */ |
| 1093 | auto fontBBox = sk_make_sp<SkPDFArray>(); |
| 1094 | fontBBox->reserve(4); |
| 1095 | fontBBox->appendInt(bbox.left()); |
| 1096 | fontBBox->appendInt(bbox.bottom()); |
| 1097 | fontBBox->appendInt(bbox.right()); |
| 1098 | fontBBox->appendInt(bbox.top()); |
| 1099 | font->insertObject("FontBBox", std::move(fontBBox)); |
| 1100 | font->insertName("CIDToGIDMap", "Identity"); |
| 1101 | sk_sp<const SkAdvancedTypefaceMetrics> metrics; |
| 1102 | if (subset) { |
| 1103 | SkTDArray<uint32_t> subsetList; |
| 1104 | for (SkGlyphID gID : SingleByteGlyphIdIterator(firstGlyphID, lastGlyphID)) { |
| 1105 | if (gID == 0 || subset->has(gID)) { // Always include glyph 0. |
| 1106 | subsetList.push(0); |
| 1107 | } |
| 1108 | } |
| 1109 | subset->exportTo(&subsetList); |
| 1110 | metrics = SkPDFFont::GetFontMetricsWithToUnicode(typeface, subsetList.begin(), |
| 1111 | subsetList.count()); |
| 1112 | } else { |
| 1113 | metrics = SkPDFFont::GetFontMetricsWithToUnicode(typeface, nullptr, 0); |
| 1114 | } |
| 1115 | if (metrics) { |
| 1116 | font->insertObjRef("ToUnicode", |
| 1117 | SkPDFMakeToUnicodeCmap(metrics->fGlyphToUnicode, |
| 1118 | subset, |
| 1119 | false, |
| 1120 | firstGlyphID, |
| 1121 | lastGlyphID)); |
| 1122 | } |
| 1123 | font->insertObject("Widths", std::move(widthArray)); |
| 1124 | font->insertObject("Encoding", std::move(encoding)); |
| 1125 | font->insertObject("CharProcs", std::move(charProcs)); |
vandebo@chromium.org | 2a22e10 | 2011-01-25 21:01:34 +0000 | [diff] [blame] | 1126 | } |
halcanary | fb62b3d | 2015-01-21 09:59:14 -0800 | [diff] [blame] | 1127 | |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 1128 | SkPDFType3Font::SkPDFType3Font(sk_sp<const SkAdvancedTypefaceMetrics> info, |
| 1129 | sk_sp<SkTypeface> typeface, |
| 1130 | SkAdvancedTypefaceMetrics::FontType fontType, |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1131 | uint16_t glyphID) |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 1132 | : SkPDFFont(std::move(info), std::move(typeface), nullptr, |
| 1133 | fontType, /* multiByteGlyphs = */ false) { |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1134 | // If fLastGlyphID isn't set (because there is not fFontInfo), look it up. |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 1135 | this->setLastGlyphID(SkToU16(this->typeface()->countGlyphs() - 1)); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1136 | this->adjustGlyphRangeForSingleByteEncoding(glyphID); |
| 1137 | } |
| 1138 | |
| 1139 | sk_sp<SkPDFObject> SkPDFType3Font::getFontSubset(const SkPDFGlyphSet* usage) { |
| 1140 | // All fonts are subset before serialization. |
| 1141 | // TODO(halcanary): all fonts should follow this pattern. |
| 1142 | auto font = sk_make_sp<SkPDFDict>("Font"); |
halcanary | 3287588 | 2016-08-16 09:36:23 -0700 | [diff] [blame] | 1143 | const SkAdvancedTypefaceMetrics* info = this->getFontInfo(); |
halcanary | 7e8d5d3 | 2016-08-12 07:59:38 -0700 | [diff] [blame] | 1144 | uint16_t emSize = info && info->fEmSize > 0 ? info->fEmSize : 1000; |
| 1145 | add_type3_font_info(font.get(), this->typeface(), (SkScalar)emSize, usage, |
| 1146 | this->firstGlyphID(), this->lastGlyphID()); |
| 1147 | return font; |
| 1148 | } |
| 1149 | |
| 1150 | |
| 1151 | //////////////////////////////////////////////////////////////////////////////// |
| 1152 | |
halcanary | fb62b3d | 2015-01-21 09:59:14 -0800 | [diff] [blame] | 1153 | SkPDFFont::Match SkPDFFont::IsMatch(SkPDFFont* existingFont, |
| 1154 | uint32_t existingFontID, |
| 1155 | uint16_t existingGlyphID, |
| 1156 | uint32_t searchFontID, |
| 1157 | uint16_t searchGlyphID) { |
| 1158 | if (existingFontID != searchFontID) { |
| 1159 | return SkPDFFont::kNot_Match; |
| 1160 | } |
| 1161 | if (existingGlyphID == 0 || searchGlyphID == 0) { |
| 1162 | return SkPDFFont::kExact_Match; |
| 1163 | } |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1164 | if (existingFont != nullptr) { |
halcanary | fb62b3d | 2015-01-21 09:59:14 -0800 | [diff] [blame] | 1165 | return (existingFont->fFirstGlyphID <= searchGlyphID && |
| 1166 | searchGlyphID <= existingFont->fLastGlyphID) |
| 1167 | ? SkPDFFont::kExact_Match |
| 1168 | : SkPDFFont::kRelated_Match; |
| 1169 | } |
| 1170 | return (existingGlyphID == searchGlyphID) ? SkPDFFont::kExact_Match |
| 1171 | : SkPDFFont::kRelated_Match; |
| 1172 | } |
halcanary | 66a82f3 | 2015-10-12 13:05:04 -0700 | [diff] [blame] | 1173 | |
| 1174 | // Since getAdvancedTypefaceMetrics is expensive, cache the result. |
| 1175 | bool SkPDFFont::CanEmbedTypeface(SkTypeface* typeface, SkPDFCanon* canon) { |
halcanary | 4ed2f01 | 2016-08-15 18:40:07 -0700 | [diff] [blame] | 1176 | SkFontID id = SkTypeface::UniqueID(typeface); |
halcanary | 66a82f3 | 2015-10-12 13:05:04 -0700 | [diff] [blame] | 1177 | if (bool* value = canon->fCanEmbedTypeface.find(id)) { |
| 1178 | return *value; |
| 1179 | } |
halcanary | 4ed2f01 | 2016-08-15 18:40:07 -0700 | [diff] [blame] | 1180 | SkAutoResolveDefaultTypeface face(typeface); |
halcanary | 66a82f3 | 2015-10-12 13:05:04 -0700 | [diff] [blame] | 1181 | bool canEmbed = true; |
halcanary | 48810a0 | 2016-03-07 14:57:50 -0800 | [diff] [blame] | 1182 | sk_sp<const SkAdvancedTypefaceMetrics> fontMetrics( |
halcanary | 66a82f3 | 2015-10-12 13:05:04 -0700 | [diff] [blame] | 1183 | face->getAdvancedTypefaceMetrics( |
| 1184 | SkTypeface::kNo_PerGlyphInfo, nullptr, 0)); |
| 1185 | if (fontMetrics) { |
| 1186 | canEmbed = !SkToBool( |
| 1187 | fontMetrics->fFlags & |
| 1188 | SkAdvancedTypefaceMetrics::kNotEmbeddable_FontFlag); |
| 1189 | } |
| 1190 | return *canon->fCanEmbedTypeface.set(id, canEmbed); |
| 1191 | } |
halcanary | bae235e | 2016-03-21 10:05:23 -0700 | [diff] [blame] | 1192 | |
| 1193 | void SkPDFFont::drop() { |
| 1194 | fTypeface = nullptr; |
| 1195 | fFontInfo = nullptr; |
| 1196 | fDescriptor = nullptr; |
| 1197 | this->SkPDFDict::drop(); |
| 1198 | } |