SkOpPathEffect.cpp 4.0 KB

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  1. /*
  2. * Copyright 2018 Google Inc.
  3. *
  4. * Use of this source code is governed by a BSD-style license that can be
  5. * found in the LICENSE file.
  6. */
  7. #include "include/core/SkStrokeRec.h"
  8. #include "src/core/SkReadBuffer.h"
  9. #include "src/core/SkWriteBuffer.h"
  10. #include "src/effects/SkOpPE.h"
  11. sk_sp<SkPathEffect> SkMergePathEffect::Make(sk_sp<SkPathEffect> one, sk_sp<SkPathEffect> two,
  12. SkPathOp op) {
  13. return sk_sp<SkPathEffect>(new SkOpPE(std::move(one), std::move(two), op));
  14. }
  15. SkOpPE::SkOpPE(sk_sp<SkPathEffect> one, sk_sp<SkPathEffect> two, SkPathOp op)
  16. : fOne(std::move(one)), fTwo(std::move(two)), fOp(op) {}
  17. bool SkOpPE::onFilterPath(SkPath* dst, const SkPath& src, SkStrokeRec* rec,
  18. const SkRect* cull) const {
  19. SkPath one, two;
  20. if (fOne) {
  21. if (!fOne->filterPath(&one, src, rec, cull)) {
  22. return false;
  23. }
  24. } else {
  25. one = src;
  26. }
  27. if (fTwo) {
  28. if (!fTwo->filterPath(&two, src, rec, cull)) {
  29. return false;
  30. }
  31. } else {
  32. two = src;
  33. }
  34. return Op(one, two, fOp, dst);
  35. }
  36. void SkOpPE::flatten(SkWriteBuffer& buffer) const {
  37. buffer.writeFlattenable(fOne.get());
  38. buffer.writeFlattenable(fTwo.get());
  39. buffer.write32(fOp);
  40. }
  41. sk_sp<SkFlattenable> SkOpPE::CreateProc(SkReadBuffer& buffer) {
  42. auto one = buffer.readPathEffect();
  43. auto two = buffer.readPathEffect();
  44. SkPathOp op = buffer.read32LE(kReverseDifference_SkPathOp);
  45. return buffer.isValid() ? SkMergePathEffect::Make(std::move(one), std::move(two), op) : nullptr;
  46. }
  47. //////////////////////////////////////////////////////////////////////////////////////////////////
  48. sk_sp<SkPathEffect> SkMatrixPathEffect::MakeTranslate(SkScalar dx, SkScalar dy) {
  49. if (!SkScalarsAreFinite(dx, dy)) {
  50. return nullptr;
  51. }
  52. return sk_sp<SkPathEffect>(new SkMatrixPE(SkMatrix::MakeTrans(dx, dy)));
  53. }
  54. sk_sp<SkPathEffect> SkMatrixPathEffect::Make(const SkMatrix& matrix) {
  55. if (!matrix.isFinite()) {
  56. return nullptr;
  57. }
  58. return sk_sp<SkPathEffect>(new SkMatrixPE(matrix));
  59. }
  60. SkMatrixPE::SkMatrixPE(const SkMatrix& matrix) : fMatrix(matrix) {
  61. SkASSERT(matrix.isFinite());
  62. }
  63. bool SkMatrixPE::onFilterPath(SkPath* dst, const SkPath& src, SkStrokeRec*, const SkRect*) const {
  64. src.transform(fMatrix, dst);
  65. return true;
  66. }
  67. void SkMatrixPE::flatten(SkWriteBuffer& buffer) const {
  68. buffer.writeMatrix(fMatrix);
  69. }
  70. sk_sp<SkFlattenable> SkMatrixPE::CreateProc(SkReadBuffer& buffer) {
  71. SkMatrix mx;
  72. buffer.readMatrix(&mx);
  73. return buffer.isValid() ? SkMatrixPathEffect::Make(mx) : nullptr;
  74. }
  75. //////////////////////////////////////////////////////////////////////////////////////////////////
  76. sk_sp<SkPathEffect> SkStrokePathEffect::Make(SkScalar width, SkPaint::Join join, SkPaint::Cap cap,
  77. SkScalar miter) {
  78. if (!SkScalarsAreFinite(width, miter) || width < 0 || miter < 0) {
  79. return nullptr;
  80. }
  81. return sk_sp<SkPathEffect>(new SkStrokePE(width, join, cap, miter));
  82. }
  83. SkStrokePE::SkStrokePE(SkScalar width, SkPaint::Join join, SkPaint::Cap cap, SkScalar miter)
  84. : fWidth(width), fMiter(miter), fJoin(join), fCap(cap) {}
  85. bool SkStrokePE::onFilterPath(SkPath* dst, const SkPath& src, SkStrokeRec*, const SkRect*) const {
  86. SkStrokeRec rec(SkStrokeRec::kFill_InitStyle);
  87. rec.setStrokeStyle(fWidth);
  88. rec.setStrokeParams(fCap, fJoin, fMiter);
  89. return rec.applyToPath(dst, src);
  90. }
  91. void SkStrokePE::flatten(SkWriteBuffer& buffer) const {
  92. buffer.writeScalar(fWidth);
  93. buffer.writeScalar(fMiter);
  94. buffer.write32(fJoin);
  95. buffer.write32(fCap);
  96. }
  97. sk_sp<SkFlattenable> SkStrokePE::CreateProc(SkReadBuffer& buffer) {
  98. SkScalar width = buffer.readScalar();
  99. SkScalar miter = buffer.readScalar();
  100. SkPaint::Join join = buffer.read32LE(SkPaint::kLast_Join);
  101. SkPaint::Cap cap = buffer.read32LE(SkPaint::kLast_Cap);
  102. return buffer.isValid() ? SkStrokePathEffect::Make(width, join, cap, miter) : nullptr;
  103. }