clip_recorder.cc 2.0 KB

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  1. // Copyright 2015 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #include "ui/compositor/clip_recorder.h"
  5. #include "cc/paint/display_item_list.h"
  6. #include "cc/paint/paint_op_buffer.h"
  7. #include "third_party/skia/include/core/SkPath.h"
  8. #include "ui/compositor/paint_context.h"
  9. #include "ui/gfx/canvas.h"
  10. #include "ui/gfx/geometry/rect.h"
  11. #include "ui/gfx/geometry/rect_conversions.h"
  12. #include "ui/gfx/geometry/skia_conversions.h"
  13. namespace ui {
  14. ClipRecorder::ClipRecorder(const PaintContext& context) : context_(context) {}
  15. ClipRecorder::~ClipRecorder() {
  16. for (int i = 0; i < num_closers_; ++i) {
  17. // Each restore is part of a separate visual rect, so gets its own
  18. // StartPaint/EndPaintOfPairedEnd.
  19. context_.list_->StartPaint();
  20. context_.list_->push<cc::RestoreOp>();
  21. context_.list_->EndPaintOfPairedEnd();
  22. }
  23. }
  24. void ClipRecorder::ClipRect(const gfx::Rect& clip_rect) {
  25. bool antialias = false;
  26. context_.list_->StartPaint();
  27. context_.list_->push<cc::SaveOp>();
  28. context_.list_->push<cc::ClipRectOp>(gfx::RectToSkRect(clip_rect),
  29. SkClipOp::kIntersect, antialias);
  30. context_.list_->EndPaintOfPairedBegin();
  31. ++num_closers_;
  32. }
  33. void ClipRecorder::ClipPath(const SkPath& clip_path) {
  34. bool antialias = false;
  35. context_.list_->StartPaint();
  36. context_.list_->push<cc::SaveOp>();
  37. context_.list_->push<cc::ClipPathOp>(clip_path, SkClipOp::kIntersect,
  38. antialias);
  39. context_.list_->EndPaintOfPairedBegin();
  40. ++num_closers_;
  41. }
  42. void ClipRecorder::ClipPathWithAntiAliasing(const SkPath& clip_path) {
  43. bool antialias = true;
  44. context_.list_->StartPaint();
  45. context_.list_->push<cc::SaveOp>();
  46. context_.list_->push<cc::ClipPathOp>(clip_path, SkClipOp::kIntersect,
  47. antialias);
  48. context_.list_->EndPaintOfPairedBegin();
  49. ++num_closers_;
  50. }
  51. } // namespace ui