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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 "SkLinearGradient.h" | 8 #include "SkLinearGradient.h" |
9 | 9 |
10 static inline int repeat_bits(int x, const int bits) { | 10 static inline int repeat_bits(int x, const int bits) { |
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53 /////////////////////////////////////////////////////////////////////////////// | 53 /////////////////////////////////////////////////////////////////////////////// |
54 | 54 |
55 SkLinearGradient::SkLinearGradient(const SkPoint pts[2], const Descriptor& desc) | 55 SkLinearGradient::SkLinearGradient(const SkPoint pts[2], const Descriptor& desc) |
56 : SkGradientShaderBase(desc) | 56 : SkGradientShaderBase(desc) |
57 , fStart(pts[0]) | 57 , fStart(pts[0]) |
58 , fEnd(pts[1]) | 58 , fEnd(pts[1]) |
59 { | 59 { |
60 pts_to_unit_matrix(pts, &fPtsToUnit); | 60 pts_to_unit_matrix(pts, &fPtsToUnit); |
61 } | 61 } |
62 | 62 |
63 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING | |
64 SkLinearGradient::SkLinearGradient(SkReadBuffer& buffer) | |
65 : INHERITED(buffer) | |
66 , fStart(buffer.readPoint()) | |
67 , fEnd(buffer.readPoint()) { | |
68 } | |
69 #endif | |
70 | |
71 SkFlattenable* SkLinearGradient::CreateProc(SkReadBuffer& buffer) { | 63 SkFlattenable* SkLinearGradient::CreateProc(SkReadBuffer& buffer) { |
72 DescriptorScope desc; | 64 DescriptorScope desc; |
73 if (!desc.unflatten(buffer)) { | 65 if (!desc.unflatten(buffer)) { |
74 return NULL; | 66 return NULL; |
75 } | 67 } |
76 SkPoint pts[2]; | 68 SkPoint pts[2]; |
77 pts[0] = buffer.readPoint(); | 69 pts[0] = buffer.readPoint(); |
78 pts[1] = buffer.readPoint(); | 70 pts[1] = buffer.readPoint(); |
79 return SkGradientShader::CreateLinear(pts, desc.fColors, desc.fPos, desc.fCo
unt, | 71 return SkGradientShader::CreateLinear(pts, desc.fColors, desc.fPos, desc.fCo
unt, |
80 desc.fTileMode, desc.fGradFlags, desc.
fLocalMatrix); | 72 desc.fTileMode, desc.fGradFlags, desc.
fLocalMatrix); |
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561 t.append(".x"); | 553 t.append(".x"); |
562 this->emitColor(builder, ge, t.c_str(), outputColor, inputColor, samplers); | 554 this->emitColor(builder, ge, t.c_str(), outputColor, inputColor, samplers); |
563 } | 555 } |
564 | 556 |
565 ///////////////////////////////////////////////////////////////////// | 557 ///////////////////////////////////////////////////////////////////// |
566 | 558 |
567 bool SkLinearGradient::asFragmentProcessor(GrContext* context, const SkPaint& pa
int, | 559 bool SkLinearGradient::asFragmentProcessor(GrContext* context, const SkPaint& pa
int, |
568 const SkMatrix* localMatrix, GrColor*
paintColor, | 560 const SkMatrix* localMatrix, GrColor*
paintColor, |
569 GrFragmentProcessor** fp) const { | 561 GrFragmentProcessor** fp) const { |
570 SkASSERT(context); | 562 SkASSERT(context); |
571 | 563 |
572 SkMatrix matrix; | 564 SkMatrix matrix; |
573 if (!this->getLocalMatrix().invert(&matrix)) { | 565 if (!this->getLocalMatrix().invert(&matrix)) { |
574 return false; | 566 return false; |
575 } | 567 } |
576 if (localMatrix) { | 568 if (localMatrix) { |
577 SkMatrix inv; | 569 SkMatrix inv; |
578 if (!localMatrix->invert(&inv)) { | 570 if (!localMatrix->invert(&inv)) { |
579 return false; | 571 return false; |
580 } | 572 } |
581 matrix.postConcat(inv); | 573 matrix.postConcat(inv); |
582 } | 574 } |
583 matrix.postConcat(fPtsToUnit); | 575 matrix.postConcat(fPtsToUnit); |
584 | 576 |
585 *paintColor = SkColor2GrColorJustAlpha(paint.getColor()); | 577 *paintColor = SkColor2GrColorJustAlpha(paint.getColor()); |
586 *fp = GrLinearGradient::Create(context, *this, matrix, fTileMode); | 578 *fp = GrLinearGradient::Create(context, *this, matrix, fTileMode); |
587 | 579 |
588 return true; | 580 return true; |
589 } | 581 } |
590 | 582 |
591 #else | 583 #else |
592 | 584 |
593 bool SkLinearGradient::asFragmentProcessor(GrContext*, const SkPaint&, const SkM
atrix*, GrColor*, | 585 bool SkLinearGradient::asFragmentProcessor(GrContext*, const SkPaint&, const SkM
atrix*, GrColor*, |
594 GrFragmentProcessor**) const { | 586 GrFragmentProcessor**) const { |
595 SkDEBUGFAIL("Should not call in GPU-less build"); | 587 SkDEBUGFAIL("Should not call in GPU-less build"); |
596 return false; | 588 return false; |
597 } | 589 } |
598 | 590 |
599 #endif | 591 #endif |
600 | 592 |
601 #ifndef SK_IGNORE_TO_STRING | 593 #ifndef SK_IGNORE_TO_STRING |
602 void SkLinearGradient::toString(SkString* str) const { | 594 void SkLinearGradient::toString(SkString* str) const { |
603 str->append("SkLinearGradient ("); | 595 str->append("SkLinearGradient ("); |
604 | 596 |
605 str->appendf("start: (%f, %f)", fStart.fX, fStart.fY); | 597 str->appendf("start: (%f, %f)", fStart.fX, fStart.fY); |
606 str->appendf(" end: (%f, %f) ", fEnd.fX, fEnd.fY); | 598 str->appendf(" end: (%f, %f) ", fEnd.fX, fEnd.fY); |
607 | 599 |
608 this->INHERITED::toString(str); | 600 this->INHERITED::toString(str); |
609 | 601 |
610 str->append(")"); | 602 str->append(")"); |
611 } | 603 } |
612 #endif | 604 #endif |
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