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Side by Side Diff: ui/compositor/clip_recorder.h

Issue 1470123002: Split ClipTransformRecorder into {Clip,Transform}Recorder. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 1 month ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef UI_COMPOSITOR_CLIP_TRANSFORM_RECORDER_H_ 5 #ifndef UI_COMPOSITOR_CLIP_RECORDER_H_
6 #define UI_COMPOSITOR_CLIP_TRANSFORM_RECORDER_H_ 6 #define UI_COMPOSITOR_CLIP_RECORDER_H_
7
8 #include <vector>
9 7
10 #include "base/macros.h" 8 #include "base/macros.h"
11 #include "ui/compositor/compositor_export.h" 9 #include "ui/compositor/compositor_export.h"
12 10
13 namespace cc { 11 namespace cc {
14 class DisplayItem; 12 class DisplayItem;
15 class DisplayItemList; 13 class DisplayItemList;
16 } 14 }
17 15
18 namespace gfx { 16 namespace gfx {
19 class Path; 17 class Path;
20 class Rect; 18 class Rect;
21 class Transform;
22 } 19 }
23 20
24 namespace ui { 21 namespace ui {
25 class PaintContext; 22 class PaintContext;
26 23
27 // A class to provide scoped clips and transforms of painting to a 24 // A class to provide scoped clips of painting to a
danakj 2015/11/23 23:20:30 use the full 80 cols
wkorman 2015/11/23 23:38:08 Done.
28 // DisplayItemList. The the clip/transform provided will be applied to any 25 // DisplayItemList. The clip provided will be applied to any
29 // DisplayItems added to the DisplayItemList while this object is alive. In 26 // DisplayItems added to the DisplayItemList while this object is
30 // other words, any nested PaintRecorders or other ClipTransformRecorders will 27 // alive. In other words, any nested PaintRecorders or other
31 // be clipped/transformed. 28 // ClipRecorders will be clipped.
32 class COMPOSITOR_EXPORT ClipTransformRecorder { 29 class COMPOSITOR_EXPORT ClipRecorder {
33 public: 30 public:
34 explicit ClipTransformRecorder(const PaintContext& context); 31 explicit ClipRecorder(const PaintContext& context);
35 ~ClipTransformRecorder(); 32 ~ClipRecorder();
36 33
37 void ClipRect(const gfx::Rect& clip_rect); 34 void ClipRect(const gfx::Rect& clip_rect);
38 void ClipPath(const gfx::Path& clip_path); 35 void ClipPath(const gfx::Path& clip_path);
39 void ClipPathWithAntiAliasing(const gfx::Path& clip_path); 36 void ClipPathWithAntiAliasing(const gfx::Path& clip_path);
40 void Transform(const gfx::Transform& transform);
41 37
42 private: 38 private:
43 enum Closer { 39 enum Closer {
44 CLIP_RECT, 40 CLIP_RECT,
45 CLIP_PATH, 41 CLIP_PATH,
46 TRANSFORM,
47 }; 42 };
48 const PaintContext& context_; 43 const PaintContext& context_;
49 // If someone needs to do more than this many operations with a single 44 // If someone needs to do more than this many operations with a single
50 // ClipTransformRecorder then increase the size of the closers_ array. 45 // ClipRecorder then increase the size of the closers_ array.
51 Closer closers_[4]; 46 Closer closers_[4];
52 size_t num_closers_; 47 size_t num_closers_;
53 48
54 DISALLOW_COPY_AND_ASSIGN(ClipTransformRecorder); 49 DISALLOW_COPY_AND_ASSIGN(ClipRecorder);
55 }; 50 };
56 51
57 } // namespace ui 52 } // namespace ui
58 53
59 #endif // UI_COMPOSITOR_CLIP_TRANSFORM_RECORDER_H_ 54 #endif // UI_COMPOSITOR_CLIP_RECORDER_H_
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