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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkPDFDevice_DEFINED | 8 #ifndef SkPDFDevice_DEFINED |
9 #define SkPDFDevice_DEFINED | 9 #define SkPDFDevice_DEFINED |
10 | 10 |
11 #include "SkBitmap.h" | 11 #include "SkBitmap.h" |
12 #include "SkBitmapKey.h" | 12 #include "SkBitmapKey.h" |
13 #include "SkCanvas.h" | 13 #include "SkCanvas.h" |
14 #include "SkClipStack.h" | 14 #include "SkClipStack.h" |
15 #include "SkData.h" | 15 #include "SkData.h" |
16 #include "SkDevice.h" | 16 #include "SkDevice.h" |
17 #include "SkPaint.h" | 17 #include "SkPaint.h" |
18 #include "SkPath.h" | 18 #include "SkPath.h" |
19 #include "SkPicture.h" | 19 #include "SkPicture.h" |
20 #include "SkRect.h" | 20 #include "SkRect.h" |
21 #include "SkRefCnt.h" | 21 #include "SkRefCnt.h" |
22 #include "SkStream.h" | 22 #include "SkStream.h" |
23 #include "SkTDArray.h" | 23 #include "SkTDArray.h" |
24 #include "SkTemplates.h" | 24 #include "SkTemplates.h" |
25 | 25 |
| 26 #include "SkSinglyLinkedList.h" |
| 27 |
26 class SkPDFArray; | 28 class SkPDFArray; |
27 class SkPDFCanon; | 29 class SkPDFCanon; |
28 class SkPDFDevice; | 30 class SkPDFDevice; |
29 class SkPDFDocument; | 31 class SkPDFDocument; |
30 class SkPDFDict; | 32 class SkPDFDict; |
31 class SkPDFFont; | 33 class SkPDFFont; |
32 class SkPDFFormXObject; | 34 class SkPDFFormXObject; |
33 class SkPDFGlyphSetMap; | 35 class SkPDFGlyphSetMap; |
34 class SkPDFGraphicState; | 36 class SkPDFGraphicState; |
35 class SkPDFObject; | 37 class SkPDFObject; |
36 class SkPDFShader; | 38 class SkPDFShader; |
37 class SkPDFStream; | 39 class SkPDFStream; |
38 class SkRRect; | 40 class SkRRect; |
39 | 41 |
40 // Private classes. | |
41 struct ContentEntry; | |
42 struct GraphicStateEntry; | |
43 | |
44 /** \class SkPDFDevice | 42 /** \class SkPDFDevice |
45 | 43 |
46 The drawing context for the PDF backend. | 44 The drawing context for the PDF backend. |
47 */ | 45 */ |
48 class SkPDFDevice final : public SkBaseDevice { | 46 class SkPDFDevice final : public SkBaseDevice { |
49 public: | 47 public: |
50 /** Create a PDF drawing context. SkPDFDevice applies a | 48 /** Create a PDF drawing context. SkPDFDevice applies a |
51 * scale-and-translate transform to move the origin from the | 49 * scale-and-translate transform to move the origin from the |
52 * bottom left (PDF default) to the top left (Skia default). | 50 * bottom left (PDF default) to the top left (Skia default). |
53 * @param pageSize Page size in point units. | 51 * @param pageSize Page size in point units. |
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168 | 166 |
169 /** Returns a SkPDFGlyphSetMap which represents glyph usage of every font | 167 /** Returns a SkPDFGlyphSetMap which represents glyph usage of every font |
170 * that shows on this device. | 168 * that shows on this device. |
171 */ | 169 */ |
172 const SkPDFGlyphSetMap& getFontGlyphUsage() const { | 170 const SkPDFGlyphSetMap& getFontGlyphUsage() const { |
173 return *(fFontGlyphUsage.get()); | 171 return *(fFontGlyphUsage.get()); |
174 } | 172 } |
175 | 173 |
176 SkPDFCanon* getCanon() const; | 174 SkPDFCanon* getCanon() const; |
177 | 175 |
| 176 // It is important to not confuse GraphicStateEntry with SkPDFGraphicState,
the |
| 177 // later being our representation of an object in the PDF file. |
| 178 struct GraphicStateEntry { |
| 179 GraphicStateEntry(); |
| 180 |
| 181 // Compare the fields we care about when setting up a new content entry. |
| 182 bool compareInitialState(const GraphicStateEntry& b); |
| 183 |
| 184 SkMatrix fMatrix; |
| 185 // We can't do set operations on Paths, though PDF natively supports |
| 186 // intersect. If the clip stack does anything other than intersect, |
| 187 // we have to fall back to the region. Treat fClipStack as authoritativ
e. |
| 188 // See https://bugs.skia.org/221 |
| 189 SkClipStack fClipStack; |
| 190 SkRegion fClipRegion; |
| 191 |
| 192 // When emitting the content entry, we will ensure the graphic state |
| 193 // is set to these values first. |
| 194 SkColor fColor; |
| 195 SkScalar fTextScaleX; // Zero means we don't care what the value is. |
| 196 SkPaint::Style fTextFill; // Only if TextScaleX is non-zero. |
| 197 int fShaderIndex; |
| 198 int fGraphicStateIndex; |
| 199 |
| 200 // We may change the font (i.e. for Type1 support) within a |
| 201 // ContentEntry. This is the one currently in effect, or nullptr if non
e. |
| 202 SkPDFFont* fFont; |
| 203 // In PDF, text size has no default value. It is only valid if fFont is |
| 204 // not nullptr. |
| 205 SkScalar fTextSize; |
| 206 }; |
| 207 |
178 protected: | 208 protected: |
179 const SkBitmap& onAccessBitmap() override { | 209 const SkBitmap& onAccessBitmap() override { |
180 return fLegacyBitmap; | 210 return fLegacyBitmap; |
181 } | 211 } |
182 | 212 |
183 sk_sp<SkSurface> makeSurface(const SkImageInfo&, const SkSurfaceProps&) over
ride; | 213 sk_sp<SkSurface> makeSurface(const SkImageInfo&, const SkSurfaceProps&) over
ride; |
184 | 214 |
185 void drawAnnotation(const SkDraw&, const SkRect&, const char key[], SkData*
value) override; | 215 void drawAnnotation(const SkDraw&, const SkRect&, const char key[], SkData*
value) override; |
186 | 216 |
187 private: | 217 private: |
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225 | 255 |
226 SkTArray<RectWithData> fLinkToURLs; | 256 SkTArray<RectWithData> fLinkToURLs; |
227 SkTArray<RectWithData> fLinkToDestinations; | 257 SkTArray<RectWithData> fLinkToDestinations; |
228 SkTArray<NamedDestination> fNamedDestinations; | 258 SkTArray<NamedDestination> fNamedDestinations; |
229 | 259 |
230 SkTDArray<SkPDFObject*> fGraphicStateResources; | 260 SkTDArray<SkPDFObject*> fGraphicStateResources; |
231 SkTDArray<SkPDFObject*> fXObjectResources; | 261 SkTDArray<SkPDFObject*> fXObjectResources; |
232 SkTDArray<SkPDFFont*> fFontResources; | 262 SkTDArray<SkPDFFont*> fFontResources; |
233 SkTDArray<SkPDFObject*> fShaderResources; | 263 SkTDArray<SkPDFObject*> fShaderResources; |
234 | 264 |
235 std::unique_ptr<ContentEntry> fContentEntries; | 265 struct ContentEntry { |
236 ContentEntry* fLastContentEntry; | 266 GraphicStateEntry fState; |
| 267 SkDynamicMemoryWStream fContent; |
| 268 }; |
| 269 SkSinglyLinkedList<ContentEntry> fContentEntries; |
237 | 270 |
238 const SkClipStack* fClipStack; | 271 const SkClipStack* fClipStack; |
239 | 272 |
240 // Glyph ids used for each font on this device. | 273 // Glyph ids used for each font on this device. |
241 std::unique_ptr<SkPDFGlyphSetMap> fFontGlyphUsage; | 274 std::unique_ptr<SkPDFGlyphSetMap> fFontGlyphUsage; |
242 | 275 |
243 SkScalar fRasterDpi; | 276 SkScalar fRasterDpi; |
244 | 277 |
245 SkBitmap fLegacyBitmap; | 278 SkBitmap fLegacyBitmap; |
246 | 279 |
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293 int getFontResourceIndex(SkTypeface* typeface, uint16_t glyphID); | 326 int getFontResourceIndex(SkTypeface* typeface, uint16_t glyphID); |
294 | 327 |
295 void internalDrawPaint(const SkPaint& paint, ContentEntry* contentEntry); | 328 void internalDrawPaint(const SkPaint& paint, ContentEntry* contentEntry); |
296 | 329 |
297 void internalDrawImage(const SkMatrix& origMatrix, | 330 void internalDrawImage(const SkMatrix& origMatrix, |
298 const SkClipStack* clipStack, | 331 const SkClipStack* clipStack, |
299 const SkRegion& origClipRegion, | 332 const SkRegion& origClipRegion, |
300 SkImageBitmap imageBitmap, | 333 SkImageBitmap imageBitmap, |
301 const SkPaint& paint); | 334 const SkPaint& paint); |
302 | 335 |
303 /** Helper method for copyContentToData. It is responsible for copying the | |
304 * list of content entries |entry| to |data|. | |
305 */ | |
306 void copyContentEntriesToData(ContentEntry* entry, SkWStream* data) const; | |
307 | |
308 bool handleInversePath(const SkDraw& d, const SkPath& origPath, | 336 bool handleInversePath(const SkDraw& d, const SkPath& origPath, |
309 const SkPaint& paint, bool pathIsMutable, | 337 const SkPaint& paint, bool pathIsMutable, |
310 const SkMatrix* prePathMatrix = nullptr); | 338 const SkMatrix* prePathMatrix = nullptr); |
311 void handlePointAnnotation(const SkPoint&, const SkMatrix&, const char key[]
, SkData* value); | 339 void handlePointAnnotation(const SkPoint&, const SkMatrix&, const char key[]
, SkData* value); |
312 void handlePathAnnotation(const SkPath&, const SkDraw& d, const char key[],
SkData* value); | 340 void handlePathAnnotation(const SkPath&, const SkDraw& d, const char key[],
SkData* value); |
313 | 341 |
314 typedef SkBaseDevice INHERITED; | 342 typedef SkBaseDevice INHERITED; |
315 | 343 |
316 // TODO(edisonn): Only SkDocument_PDF and SkPDFImageShader should be able to
create | 344 // TODO(edisonn): Only SkDocument_PDF and SkPDFImageShader should be able to
create |
317 // an SkPDFDevice | 345 // an SkPDFDevice |
318 //friend class SkDocument_PDF; | 346 //friend class SkDocument_PDF; |
319 //friend class SkPDFImageShader; | 347 //friend class SkPDFImageShader; |
320 }; | 348 }; |
321 | 349 |
322 #endif | 350 #endif |
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