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1 /* | 1 /* |
2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 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 #include "GrTextContext.h" | 8 #include "GrTextContext.h" |
9 #include "GrBlurUtils.h" | 9 #include "GrBlurUtils.h" |
10 #include "GrContext.h" | 10 #include "GrContext.h" |
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44 do { | 44 do { |
45 if (textContext->canDraw(rt, clip, paint, skPaint, viewMatrix)) { | 45 if (textContext->canDraw(rt, clip, paint, skPaint, viewMatrix)) { |
46 textContext->onDrawText(dc, rt, clip, paint, skPaint, viewMatrix, | 46 textContext->onDrawText(dc, rt, clip, paint, skPaint, viewMatrix, |
47 text, byteLength, x, y, clipBounds); | 47 text, byteLength, x, y, clipBounds); |
48 return; | 48 return; |
49 } | 49 } |
50 textContext = textContext->fFallbackTextContext; | 50 textContext = textContext->fFallbackTextContext; |
51 } while (textContext); | 51 } while (textContext); |
52 | 52 |
53 // fall back to drawing as a path | 53 // fall back to drawing as a path |
54 this->drawTextAsPath(dc, rt, clip, skPaint, viewMatrix, | 54 this->drawTextAsPath(dc, clip, skPaint, viewMatrix, |
55 text, byteLength, x, y, clipBounds); | 55 text, byteLength, x, y, clipBounds); |
56 } | 56 } |
57 | 57 |
58 void GrTextContext::drawPosText(GrDrawContext* dc, GrRenderTarget* rt, | 58 void GrTextContext::drawPosText(GrDrawContext* dc, GrRenderTarget* rt, |
59 const GrClip& clip, const GrPaint& paint, | 59 const GrClip& clip, const GrPaint& paint, |
60 const SkPaint& skPaint, const SkMatrix& viewMatr
ix, | 60 const SkPaint& skPaint, const SkMatrix& viewMatr
ix, |
61 const char text[], size_t byteLength, | 61 const char text[], size_t byteLength, |
62 const SkScalar pos[], int scalarsPerPosition, | 62 const SkScalar pos[], int scalarsPerPosition, |
63 const SkPoint& offset, const SkIRect& clipBounds
) { | 63 const SkPoint& offset, const SkIRect& clipBounds
) { |
64 if (fContext->abandoned()) { | 64 if (fContext->abandoned()) { |
65 return; | 65 return; |
66 } | 66 } |
67 | 67 |
68 GrTextContext* textContext = this; | 68 GrTextContext* textContext = this; |
69 do { | 69 do { |
70 if (textContext->canDraw(rt, clip, paint, skPaint, viewMatrix)) { | 70 if (textContext->canDraw(rt, clip, paint, skPaint, viewMatrix)) { |
71 textContext->onDrawPosText(dc, rt, clip, paint, skPaint, viewMatrix, | 71 textContext->onDrawPosText(dc, rt, clip, paint, skPaint, viewMatrix, |
72 text, byteLength, pos, | 72 text, byteLength, pos, |
73 scalarsPerPosition, offset, clipBounds); | 73 scalarsPerPosition, offset, clipBounds); |
74 return; | 74 return; |
75 } | 75 } |
76 textContext = textContext->fFallbackTextContext; | 76 textContext = textContext->fFallbackTextContext; |
77 } while (textContext); | 77 } while (textContext); |
78 | 78 |
79 // fall back to drawing as a path | 79 // fall back to drawing as a path |
80 this->drawPosTextAsPath(dc, rt, clip, skPaint, viewMatrix, text, byteLength,
pos, | 80 this->drawPosTextAsPath(dc, clip, skPaint, viewMatrix, text, byteLength, pos
, |
81 scalarsPerPosition, offset, clipBounds); | 81 scalarsPerPosition, offset, clipBounds); |
82 } | 82 } |
83 | 83 |
84 bool GrTextContext::ShouldDisableLCD(const SkPaint& paint) { | 84 bool GrTextContext::ShouldDisableLCD(const SkPaint& paint) { |
85 if (!SkXfermode::AsMode(paint.getXfermode(), nullptr) || | 85 if (!SkXfermode::AsMode(paint.getXfermode(), nullptr) || |
86 paint.getMaskFilter() || | 86 paint.getMaskFilter() || |
87 paint.getRasterizer() || | 87 paint.getRasterizer() || |
88 paint.getPathEffect() || | 88 paint.getPathEffect() || |
89 paint.isFakeBoldText() || | 89 paint.isFakeBoldText() || |
90 paint.getStyle() != SkPaint::kFill_Style) | 90 paint.getStyle() != SkPaint::kFill_Style) |
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154 SkFAIL("unhandled positioning mode"); | 154 SkFAIL("unhandled positioning mode"); |
155 } | 155 } |
156 | 156 |
157 if (drawFilter) { | 157 if (drawFilter) { |
158 // A draw filter may change the paint arbitrarily, so we must re-see
d in this case. | 158 // A draw filter may change the paint arbitrarily, so we must re-see
d in this case. |
159 runPaint = skPaint; | 159 runPaint = skPaint; |
160 } | 160 } |
161 } | 161 } |
162 } | 162 } |
163 | 163 |
164 void GrTextContext::drawTextAsPath(GrDrawContext* dc, GrRenderTarget* rt, | 164 void GrTextContext::drawTextAsPath(GrDrawContext* dc, |
165 const GrClip& clip, | 165 const GrClip& clip, |
166 const SkPaint& skPaint, const SkMatrix& viewM
atrix, | 166 const SkPaint& skPaint, const SkMatrix& viewM
atrix, |
167 const char text[], size_t byteLength, SkScala
r x, SkScalar y, | 167 const char text[], size_t byteLength, SkScala
r x, SkScalar y, |
168 const SkIRect& clipBounds) { | 168 const SkIRect& clipBounds) { |
169 SkTextToPathIter iter(text, byteLength, skPaint, true); | 169 SkTextToPathIter iter(text, byteLength, skPaint, true); |
170 | 170 |
171 SkMatrix matrix; | 171 SkMatrix matrix; |
172 matrix.setScale(iter.getPathScale(), iter.getPathScale()); | 172 matrix.setScale(iter.getPathScale(), iter.getPathScale()); |
173 matrix.postTranslate(x, y); | 173 matrix.postTranslate(x, y); |
174 | 174 |
175 const SkPath* iterPath; | 175 const SkPath* iterPath; |
176 SkScalar xpos, prevXPos = 0; | 176 SkScalar xpos, prevXPos = 0; |
177 | 177 |
178 while (iter.next(&iterPath, &xpos)) { | 178 while (iter.next(&iterPath, &xpos)) { |
179 matrix.postTranslate(xpos - prevXPos, 0); | 179 matrix.postTranslate(xpos - prevXPos, 0); |
180 if (iterPath) { | 180 if (iterPath) { |
181 const SkPaint& pnt = iter.getPaint(); | 181 const SkPaint& pnt = iter.getPaint(); |
182 GrBlurUtils::drawPathWithMaskFilter(fContext, dc, rt, clip, *iterPat
h, | 182 GrBlurUtils::drawPathWithMaskFilter(fContext, dc, clip, *iterPath, |
183 pnt, viewMatrix, &matrix, clipBo
unds, false); | 183 pnt, viewMatrix, &matrix, clipBo
unds, false); |
184 } | 184 } |
185 prevXPos = xpos; | 185 prevXPos = xpos; |
186 } | 186 } |
187 } | 187 } |
188 | 188 |
189 void GrTextContext::drawPosTextAsPath(GrDrawContext* dc, GrRenderTarget* rt, | 189 void GrTextContext::drawPosTextAsPath(GrDrawContext* dc, |
190 const GrClip& clip, | 190 const GrClip& clip, |
191 const SkPaint& origPaint, const SkMatrix&
viewMatrix, | 191 const SkPaint& origPaint, const SkMatrix&
viewMatrix, |
192 const char text[], size_t byteLength, | 192 const char text[], size_t byteLength, |
193 const SkScalar pos[], int scalarsPerPositi
on, | 193 const SkScalar pos[], int scalarsPerPositi
on, |
194 const SkPoint& offset, const SkIRect& clip
Bounds) { | 194 const SkPoint& offset, const SkIRect& clip
Bounds) { |
195 // setup our std paint, in hopes of getting hits in the cache | 195 // setup our std paint, in hopes of getting hits in the cache |
196 SkPaint paint(origPaint); | 196 SkPaint paint(origPaint); |
197 SkScalar matrixScale = paint.setupForAsPaths(); | 197 SkScalar matrixScale = paint.setupForAsPaths(); |
198 | 198 |
199 SkMatrix matrix; | 199 SkMatrix matrix; |
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220 if (glyph.fWidth) { | 220 if (glyph.fWidth) { |
221 const SkPath* path = cache->findPath(glyph); | 221 const SkPath* path = cache->findPath(glyph); |
222 if (path) { | 222 if (path) { |
223 SkPoint tmsLoc; | 223 SkPoint tmsLoc; |
224 tmsProc(pos, &tmsLoc); | 224 tmsProc(pos, &tmsLoc); |
225 SkPoint loc; | 225 SkPoint loc; |
226 alignProc(tmsLoc, glyph, &loc); | 226 alignProc(tmsLoc, glyph, &loc); |
227 | 227 |
228 matrix[SkMatrix::kMTransX] = loc.fX; | 228 matrix[SkMatrix::kMTransX] = loc.fX; |
229 matrix[SkMatrix::kMTransY] = loc.fY; | 229 matrix[SkMatrix::kMTransY] = loc.fY; |
230 GrBlurUtils::drawPathWithMaskFilter(fContext, dc, rt, clip, *pat
h, paint, | 230 GrBlurUtils::drawPathWithMaskFilter(fContext, dc, clip, *path, p
aint, |
231 viewMatrix, &matrix, clipBou
nds, false); | 231 viewMatrix, &matrix, clipBou
nds, false); |
232 } | 232 } |
233 } | 233 } |
234 pos += scalarsPerPosition; | 234 pos += scalarsPerPosition; |
235 } | 235 } |
236 } | 236 } |
237 | 237 |
238 // *** change to output positions? | 238 // *** change to output positions? |
239 int GrTextContext::MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCachePr
oc, | 239 int GrTextContext::MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCachePr
oc, |
240 const char text[], size_t byteLength, SkVector*
stopVector) { | 240 const char text[], size_t byteLength, SkVector*
stopVector) { |
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272 if (cache->getAuxProcData(GlyphCacheAuxProc, &auxData)) { | 272 if (cache->getAuxProcData(GlyphCacheAuxProc, &auxData)) { |
273 scaler = (GrFontScaler*)auxData; | 273 scaler = (GrFontScaler*)auxData; |
274 } | 274 } |
275 if (nullptr == scaler) { | 275 if (nullptr == scaler) { |
276 scaler = new GrFontScaler(cache); | 276 scaler = new GrFontScaler(cache); |
277 cache->setAuxProc(GlyphCacheAuxProc, scaler); | 277 cache->setAuxProc(GlyphCacheAuxProc, scaler); |
278 } | 278 } |
279 | 279 |
280 return scaler; | 280 return scaler; |
281 } | 281 } |
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