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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 "GrDistanceFieldTextContext.h" | 8 #include "GrDistanceFieldTextContext.h" |
9 #include "GrAtlas.h" | 9 #include "GrAtlas.h" |
10 #include "GrBitmapTextContext.h" | 10 #include "GrBitmapTextContext.h" |
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309 // the last 2 parameters are ignored | 309 // the last 2 parameters are ignored |
310 const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); | 310 const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
311 | 311 |
312 if (glyph.fWidth) { | 312 if (glyph.fWidth) { |
313 SkScalar x = offset.x() + pos[0]; | 313 SkScalar x = offset.x() + pos[0]; |
314 SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0)
; | 314 SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0)
; |
315 | 315 |
316 if (!this->appendGlyph(GrGlyph::Pack(glyph.getGlyphID(), | 316 if (!this->appendGlyph(GrGlyph::Pack(glyph.getGlyphID(), |
317 glyph.getSubXFixed(), | 317 glyph.getSubXFixed(), |
318 glyph.getSubYFixed()), | 318 glyph.getSubYFixed()), |
319 SkScalarToFixed(x), | 319 x, y, fontScaler)) { |
320 SkScalarToFixed(y), | |
321 fontScaler)) { | |
322 // couldn't append, send to fallback | 320 // couldn't append, send to fallback |
323 fallbackTxt.push_back_n(text-lastText, lastText); | 321 fallbackTxt.push_back_n(text-lastText, lastText); |
324 fallbackPos.push_back(pos[0]); | 322 fallbackPos.push_back(pos[0]); |
325 if (2 == scalarsPerPosition) { | 323 if (2 == scalarsPerPosition) { |
326 fallbackPos.push_back(pos[1]); | 324 fallbackPos.push_back(pos[1]); |
327 } | 325 } |
328 } | 326 } |
329 } | 327 } |
330 pos += scalarsPerPosition; | 328 pos += scalarsPerPosition; |
331 } | 329 } |
332 } else { | 330 } else { |
333 SkScalar alignMul = SkPaint::kCenter_Align == fSkPaint.getTextAlign() ?
SK_ScalarHalf | 331 SkScalar alignMul = SkPaint::kCenter_Align == fSkPaint.getTextAlign() ?
SK_ScalarHalf |
334 :
SK_Scalar1; | 332 :
SK_Scalar1; |
335 while (text < stop) { | 333 while (text < stop) { |
336 const char* lastText = text; | 334 const char* lastText = text; |
337 // the last 2 parameters are ignored | 335 // the last 2 parameters are ignored |
338 const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); | 336 const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
339 | 337 |
340 if (glyph.fWidth) { | 338 if (glyph.fWidth) { |
341 SkScalar x = offset.x() + pos[0]; | 339 SkScalar x = offset.x() + pos[0]; |
342 SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0)
; | 340 SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0)
; |
343 | 341 |
344 SkScalar advanceX = SkFixedToScalar(glyph.fAdvanceX)*alignMul*fT
extRatio; | 342 SkScalar advanceX = SkFixedToScalar(glyph.fAdvanceX)*alignMul*fT
extRatio; |
345 SkScalar advanceY = SkFixedToScalar(glyph.fAdvanceY)*alignMul*fT
extRatio; | 343 SkScalar advanceY = SkFixedToScalar(glyph.fAdvanceY)*alignMul*fT
extRatio; |
346 | 344 |
347 if (!this->appendGlyph(GrGlyph::Pack(glyph.getGlyphID(), | 345 if (!this->appendGlyph(GrGlyph::Pack(glyph.getGlyphID(), |
348 glyph.getSubXFixed(), | 346 glyph.getSubXFixed(), |
349 glyph.getSubYFixed()), | 347 glyph.getSubYFixed()), |
350 SkScalarToFixed(x - advanceX), | 348 x - advanceX, y - advanceY, fontScaler))
{ |
351 SkScalarToFixed(y - advanceY), | |
352 fontScaler)) { | |
353 // couldn't append, send to fallback | 349 // couldn't append, send to fallback |
354 fallbackTxt.push_back_n(text-lastText, lastText); | 350 fallbackTxt.push_back_n(text-lastText, lastText); |
355 fallbackPos.push_back(pos[0]); | 351 fallbackPos.push_back(pos[0]); |
356 if (2 == scalarsPerPosition) { | 352 if (2 == scalarsPerPosition) { |
357 fallbackPos.push_back(pos[1]); | 353 fallbackPos.push_back(pos[1]); |
358 } | 354 } |
359 } | 355 } |
360 } | 356 } |
361 pos += scalarsPerPosition; | 357 pos += scalarsPerPosition; |
362 } | 358 } |
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445 fEffectTextureUniqueID = textureUniqueID; | 441 fEffectTextureUniqueID = textureUniqueID; |
446 fEffectColor = filteredColor; | 442 fEffectColor = filteredColor; |
447 fEffectFlags = flags; | 443 fEffectFlags = flags; |
448 } | 444 } |
449 | 445 |
450 } | 446 } |
451 | 447 |
452 // Returns true if this method handled the glyph, false if needs to be passed to
fallback | 448 // Returns true if this method handled the glyph, false if needs to be passed to
fallback |
453 // | 449 // |
454 bool GrDistanceFieldTextContext::appendGlyph(GrGlyph::PackedID packed, | 450 bool GrDistanceFieldTextContext::appendGlyph(GrGlyph::PackedID packed, |
455 SkFixed vx, SkFixed vy, | 451 SkScalar sx, SkScalar sy, |
456 GrFontScaler* scaler) { | 452 GrFontScaler* scaler) { |
457 if (NULL == fDrawTarget) { | 453 if (NULL == fDrawTarget) { |
458 return true; | 454 return true; |
459 } | 455 } |
460 | 456 |
461 if (NULL == fStrike) { | 457 if (NULL == fStrike) { |
462 fStrike = fContext->getFontCache()->getStrike(scaler, true); | 458 fStrike = fContext->getFontCache()->getStrike(scaler, true); |
463 } | 459 } |
464 | 460 |
465 GrGlyph* glyph = fStrike->getGlyph(packed, scaler); | 461 GrGlyph* glyph = fStrike->getGlyph(packed, scaler); |
466 if (NULL == glyph || glyph->fBounds.isEmpty()) { | 462 if (NULL == glyph || glyph->fBounds.isEmpty()) { |
467 return true; | 463 return true; |
468 } | 464 } |
469 | 465 |
470 // fallback to color glyph support | 466 // fallback to color glyph support |
471 if (kA8_GrMaskFormat != glyph->fMaskFormat) { | 467 if (kA8_GrMaskFormat != glyph->fMaskFormat) { |
472 return false; | 468 return false; |
473 } | 469 } |
474 | 470 |
475 SkScalar sx = SkFixedToScalar(vx); | |
476 SkScalar sy = SkFixedToScalar(vy); | |
477 /* | 471 /* |
478 // not valid, need to find a different solution for this | 472 // not valid, need to find a different solution for this |
479 vx += SkIntToFixed(glyph->fBounds.fLeft); | 473 vx += SkIntToFixed(glyph->fBounds.fLeft); |
480 vy += SkIntToFixed(glyph->fBounds.fTop); | 474 vy += SkIntToFixed(glyph->fBounds.fTop); |
481 | 475 |
482 // keep them as ints until we've done the clip-test | 476 // keep them as ints until we've done the clip-test |
483 GrFixed width = glyph->fBounds.width(); | 477 GrFixed width = glyph->fBounds.width(); |
484 GrFixed height = glyph->fBounds.height(); | 478 GrFixed height = glyph->fBounds.height(); |
485 | 479 |
486 // check if we clipped out | 480 // check if we clipped out |
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697 } | 691 } |
698 } | 692 } |
699 | 693 |
700 inline void GrDistanceFieldTextContext::finish() { | 694 inline void GrDistanceFieldTextContext::finish() { |
701 this->flush(); | 695 this->flush(); |
702 fTotalVertexCount = 0; | 696 fTotalVertexCount = 0; |
703 | 697 |
704 GrTextContext::finish(); | 698 GrTextContext::finish(); |
705 } | 699 } |
706 | 700 |
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