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| 1 | 1 |
| 2 /* | 2 /* |
| 3 * Copyright 2011 Google Inc. | 3 * Copyright 2011 Google Inc. |
| 4 * | 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
| 7 */ | 7 */ |
| 8 | 8 |
| 9 | 9 |
| 10 #include "SkPDFShader.h" | 10 #include "SkPDFShader.h" |
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| 481 return state == *fShaderState; | 481 return state == *fShaderState; |
| 482 } | 482 } |
| 483 | 483 |
| 484 SkPDFImageShader::~SkPDFImageShader() {} | 484 SkPDFImageShader::~SkPDFImageShader() {} |
| 485 | 485 |
| 486 //////////////////////////////////////////////////////////////////////////////// | 486 //////////////////////////////////////////////////////////////////////////////// |
| 487 | 487 |
| 488 static SkPDFObject* get_pdf_shader_by_state( | 488 static SkPDFObject* get_pdf_shader_by_state( |
| 489 SkPDFDocument* doc, | 489 SkPDFDocument* doc, |
| 490 SkScalar dpi, | 490 SkScalar dpi, |
| 491 SkAutoTDelete<SkPDFShader::State>* autoState) { | 491 std::unique_ptr<SkPDFShader::State>* autoState) { |
| 492 const SkPDFShader::State& state = **autoState; | 492 const SkPDFShader::State& state = **autoState; |
| 493 SkPDFCanon* canon = doc->canon(); | 493 SkPDFCanon* canon = doc->canon(); |
| 494 if (state.fType == SkShader::kNone_GradientType && state.fImage.isNull()) { | 494 if (state.fType == SkShader::kNone_GradientType && state.fImage.isNull()) { |
| 495 // TODO(vandebo) This drops SKComposeShader on the floor. We could | 495 // TODO(vandebo) This drops SKComposeShader on the floor. We could |
| 496 // handle compose shader by pulling things up to a layer, drawing with | 496 // handle compose shader by pulling things up to a layer, drawing with |
| 497 // the first shader, applying the xfer mode and drawing again with the | 497 // the first shader, applying the xfer mode and drawing again with the |
| 498 // second shader, then applying the layer to the original drawing. | 498 // second shader, then applying the layer to the original drawing. |
| 499 return nullptr; | 499 return nullptr; |
| 500 } else if (state.fType == SkShader::kNone_GradientType) { | 500 } else if (state.fType == SkShader::kNone_GradientType) { |
| 501 SkPDFObject* shader = canon->findImageShader(state); | 501 SkPDFObject* shader = canon->findImageShader(state); |
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| 512 } | 512 } |
| 513 } | 513 } |
| 514 | 514 |
| 515 // static | 515 // static |
| 516 SkPDFObject* SkPDFShader::GetPDFShader(SkPDFDocument* doc, | 516 SkPDFObject* SkPDFShader::GetPDFShader(SkPDFDocument* doc, |
| 517 SkScalar dpi, | 517 SkScalar dpi, |
| 518 SkShader* shader, | 518 SkShader* shader, |
| 519 const SkMatrix& matrix, | 519 const SkMatrix& matrix, |
| 520 const SkIRect& surfaceBBox, | 520 const SkIRect& surfaceBBox, |
| 521 SkScalar rasterScale) { | 521 SkScalar rasterScale) { |
| 522 SkAutoTDelete<SkPDFShader::State> state(new State(shader, matrix, surfaceBBo
x, rasterScale)); | 522 std::unique_ptr<SkPDFShader::State> state(new State(shader, matrix, surfaceB
Box, rasterScale)); |
| 523 return get_pdf_shader_by_state(doc, dpi, &state); | 523 return get_pdf_shader_by_state(doc, dpi, &state); |
| 524 } | 524 } |
| 525 | 525 |
| 526 static sk_sp<SkPDFDict> get_gradient_resource_dict( | 526 static sk_sp<SkPDFDict> get_gradient_resource_dict( |
| 527 SkPDFObject* functionShader, | 527 SkPDFObject* functionShader, |
| 528 SkPDFObject* gState) { | 528 SkPDFObject* gState) { |
| 529 SkTDArray<SkPDFObject*> patterns; | 529 SkTDArray<SkPDFObject*> patterns; |
| 530 if (functionShader) { | 530 if (functionShader) { |
| 531 patterns.push(functionShader); | 531 patterns.push(functionShader); |
| 532 } | 532 } |
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| 578 | 578 |
| 579 /** | 579 /** |
| 580 * Creates a ExtGState with the SMask set to the luminosityShader in | 580 * Creates a ExtGState with the SMask set to the luminosityShader in |
| 581 * luminosity mode. The shader pattern extends to the bbox. | 581 * luminosity mode. The shader pattern extends to the bbox. |
| 582 */ | 582 */ |
| 583 static sk_sp<SkPDFObject> create_smask_graphic_state( | 583 static sk_sp<SkPDFObject> create_smask_graphic_state( |
| 584 SkPDFDocument* doc, SkScalar dpi, const SkPDFShader::State& state) { | 584 SkPDFDocument* doc, SkScalar dpi, const SkPDFShader::State& state) { |
| 585 SkRect bbox; | 585 SkRect bbox; |
| 586 bbox.set(state.fBBox); | 586 bbox.set(state.fBBox); |
| 587 | 587 |
| 588 SkAutoTDelete<SkPDFShader::State> alphaToLuminosityState( | 588 std::unique_ptr<SkPDFShader::State> alphaToLuminosityState( |
| 589 state.CreateAlphaToLuminosityState()); | 589 state.CreateAlphaToLuminosityState()); |
| 590 sk_sp<SkPDFObject> luminosityShader( | 590 sk_sp<SkPDFObject> luminosityShader( |
| 591 get_pdf_shader_by_state(doc, dpi, &alphaToLuminosityState)); | 591 get_pdf_shader_by_state(doc, dpi, &alphaToLuminosityState)); |
| 592 | 592 |
| 593 SkAutoTDelete<SkStream> alphaStream(create_pattern_fill_content(-1, bbox)); | 593 std::unique_ptr<SkStream> alphaStream(create_pattern_fill_content(-1, bbox))
; |
| 594 | 594 |
| 595 auto resources = | 595 auto resources = |
| 596 get_gradient_resource_dict(luminosityShader.get(), nullptr); | 596 get_gradient_resource_dict(luminosityShader.get(), nullptr); |
| 597 | 597 |
| 598 sk_sp<SkPDFFormXObject> alphaMask( | 598 sk_sp<SkPDFFormXObject> alphaMask( |
| 599 new SkPDFFormXObject(alphaStream.get(), bbox, resources.get())); | 599 new SkPDFFormXObject(alphaStream.get(), bbox, resources.get())); |
| 600 | 600 |
| 601 return SkPDFGraphicState::GetSMaskGraphicState( | 601 return SkPDFGraphicState::GetSMaskGraphicState( |
| 602 alphaMask.get(), false, | 602 alphaMask.get(), false, |
| 603 SkPDFGraphicState::kLuminosity_SMaskMode, doc->canon()); | 603 SkPDFGraphicState::kLuminosity_SMaskMode, doc->canon()); |
| 604 } | 604 } |
| 605 | 605 |
| 606 SkPDFAlphaFunctionShader* SkPDFAlphaFunctionShader::Create( | 606 SkPDFAlphaFunctionShader* SkPDFAlphaFunctionShader::Create( |
| 607 SkPDFDocument* doc, | 607 SkPDFDocument* doc, |
| 608 SkScalar dpi, | 608 SkScalar dpi, |
| 609 SkAutoTDelete<SkPDFShader::State>* autoState) { | 609 std::unique_ptr<SkPDFShader::State>* autoState) { |
| 610 const SkPDFShader::State& state = **autoState; | 610 const SkPDFShader::State& state = **autoState; |
| 611 SkRect bbox; | 611 SkRect bbox; |
| 612 bbox.set(state.fBBox); | 612 bbox.set(state.fBBox); |
| 613 | 613 |
| 614 SkAutoTDelete<SkPDFShader::State> opaqueState(state.CreateOpaqueState()); | 614 std::unique_ptr<SkPDFShader::State> opaqueState(state.CreateOpaqueState()); |
| 615 | 615 |
| 616 sk_sp<SkPDFObject> colorShader( | 616 sk_sp<SkPDFObject> colorShader( |
| 617 get_pdf_shader_by_state(doc, dpi, &opaqueState)); | 617 get_pdf_shader_by_state(doc, dpi, &opaqueState)); |
| 618 if (!colorShader) { | 618 if (!colorShader) { |
| 619 return nullptr; | 619 return nullptr; |
| 620 } | 620 } |
| 621 | 621 |
| 622 // Create resource dict with alpha graphics state as G0 and | 622 // Create resource dict with alpha graphics state as G0 and |
| 623 // pattern shader as P0, then write content stream. | 623 // pattern shader as P0, then write content stream. |
| 624 auto alphaGs = create_smask_graphic_state(doc, dpi, state); | 624 auto alphaGs = create_smask_graphic_state(doc, dpi, state); |
| 625 | 625 |
| 626 SkPDFAlphaFunctionShader* alphaFunctionShader = | 626 SkPDFAlphaFunctionShader* alphaFunctionShader = |
| 627 new SkPDFAlphaFunctionShader(autoState->release()); | 627 new SkPDFAlphaFunctionShader(autoState->release()); |
| 628 | 628 |
| 629 auto resourceDict = | 629 auto resourceDict = |
| 630 get_gradient_resource_dict(colorShader.get(), alphaGs.get()); | 630 get_gradient_resource_dict(colorShader.get(), alphaGs.get()); |
| 631 | 631 |
| 632 SkAutoTDelete<SkStream> colorStream( | 632 std::unique_ptr<SkStream> colorStream( |
| 633 create_pattern_fill_content(0, bbox)); | 633 create_pattern_fill_content(0, bbox)); |
| 634 alphaFunctionShader->setData(colorStream.get()); | 634 alphaFunctionShader->setData(colorStream.get()); |
| 635 | 635 |
| 636 populate_tiling_pattern_dict(alphaFunctionShader, bbox, resourceDict.get(), | 636 populate_tiling_pattern_dict(alphaFunctionShader, bbox, resourceDict.get(), |
| 637 SkMatrix::I()); | 637 SkMatrix::I()); |
| 638 doc->canon()->addAlphaShader(alphaFunctionShader); | 638 doc->canon()->addAlphaShader(alphaFunctionShader); |
| 639 return alphaFunctionShader; | 639 return alphaFunctionShader; |
| 640 } | 640 } |
| 641 | 641 |
| 642 // Finds affine and persp such that in = affine * persp. | 642 // Finds affine and persp such that in = affine * persp. |
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| 694 SkPDFArray* domain, | 694 SkPDFArray* domain, |
| 695 sk_sp<SkPDFObject> range) { | 695 sk_sp<SkPDFObject> range) { |
| 696 auto result = sk_make_sp<SkPDFStream>(psCode.get()); | 696 auto result = sk_make_sp<SkPDFStream>(psCode.get()); |
| 697 result->insertInt("FunctionType", 4); | 697 result->insertInt("FunctionType", 4); |
| 698 result->insertObject("Domain", sk_ref_sp(domain)); | 698 result->insertObject("Domain", sk_ref_sp(domain)); |
| 699 result->insertObject("Range", std::move(range)); | 699 result->insertObject("Range", std::move(range)); |
| 700 return result; | 700 return result; |
| 701 } | 701 } |
| 702 | 702 |
| 703 SkPDFFunctionShader* SkPDFFunctionShader::Create( | 703 SkPDFFunctionShader* SkPDFFunctionShader::Create( |
| 704 SkPDFCanon* canon, SkAutoTDelete<SkPDFShader::State>* autoState) { | 704 SkPDFCanon* canon, std::unique_ptr<SkPDFShader::State>* autoState) { |
| 705 const SkPDFShader::State& state = **autoState; | 705 const SkPDFShader::State& state = **autoState; |
| 706 | 706 |
| 707 void (*codeFunction)(const SkShader::GradientInfo& info, | 707 void (*codeFunction)(const SkShader::GradientInfo& info, |
| 708 const SkMatrix& perspectiveRemover, | 708 const SkMatrix& perspectiveRemover, |
| 709 SkDynamicMemoryWStream* function) = nullptr; | 709 SkDynamicMemoryWStream* function) = nullptr; |
| 710 SkPoint transformPoints[2]; | 710 SkPoint transformPoints[2]; |
| 711 | 711 |
| 712 // Depending on the type of the gradient, we want to transform the | 712 // Depending on the type of the gradient, we want to transform the |
| 713 // coordinate space in different ways. | 713 // coordinate space in different ways. |
| 714 const SkShader::GradientInfo* info = &state.fInfo; | 714 const SkShader::GradientInfo* info = &state.fInfo; |
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| 819 SkPDFUtils::MatrixToArray(finalMatrix)); | 819 SkPDFUtils::MatrixToArray(finalMatrix)); |
| 820 pdfFunctionShader->insertObject("Shading", std::move(pdfShader)); | 820 pdfFunctionShader->insertObject("Shading", std::move(pdfShader)); |
| 821 | 821 |
| 822 canon->addFunctionShader(pdfFunctionShader.get()); | 822 canon->addFunctionShader(pdfFunctionShader.get()); |
| 823 return pdfFunctionShader.release(); | 823 return pdfFunctionShader.release(); |
| 824 } | 824 } |
| 825 | 825 |
| 826 SkPDFImageShader* SkPDFImageShader::Create( | 826 SkPDFImageShader* SkPDFImageShader::Create( |
| 827 SkPDFDocument* doc, | 827 SkPDFDocument* doc, |
| 828 SkScalar dpi, | 828 SkScalar dpi, |
| 829 SkAutoTDelete<SkPDFShader::State>* autoState) { | 829 std::unique_ptr<SkPDFShader::State>* autoState) { |
| 830 const SkPDFShader::State& state = **autoState; | 830 const SkPDFShader::State& state = **autoState; |
| 831 | 831 |
| 832 state.fImage.lockPixels(); | 832 state.fImage.lockPixels(); |
| 833 | 833 |
| 834 // The image shader pattern cell will be drawn into a separate device | 834 // The image shader pattern cell will be drawn into a separate device |
| 835 // in pattern cell space (no scaling on the bitmap, though there may be | 835 // in pattern cell space (no scaling on the bitmap, though there may be |
| 836 // translations so that all content is in the device, coordinates > 0). | 836 // translations so that all content is in the device, coordinates > 0). |
| 837 | 837 |
| 838 // Map clip bounds to shader space to ensure the device is large enough | 838 // Map clip bounds to shader space to ensure the device is large enough |
| 839 // to handle fake clamping. | 839 // to handle fake clamping. |
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| 1227 return false; | 1227 return false; |
| 1228 } | 1228 } |
| 1229 | 1229 |
| 1230 void SkPDFShader::State::AllocateGradientInfoStorage() { | 1230 void SkPDFShader::State::AllocateGradientInfoStorage() { |
| 1231 fColorData.set(sk_malloc_throw( | 1231 fColorData.set(sk_malloc_throw( |
| 1232 fInfo.fColorCount * (sizeof(SkColor) + sizeof(SkScalar)))); | 1232 fInfo.fColorCount * (sizeof(SkColor) + sizeof(SkScalar)))); |
| 1233 fInfo.fColors = reinterpret_cast<SkColor*>(fColorData.get()); | 1233 fInfo.fColors = reinterpret_cast<SkColor*>(fColorData.get()); |
| 1234 fInfo.fColorOffsets = | 1234 fInfo.fColorOffsets = |
| 1235 reinterpret_cast<SkScalar*>(fInfo.fColors + fInfo.fColorCount); | 1235 reinterpret_cast<SkScalar*>(fInfo.fColors + fInfo.fColorCount); |
| 1236 } | 1236 } |
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