blob: 86267d0db940fbce2cc856b7f780c30026238ef1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_COMPOSITOR_COMPOSITING_RECORDER_H_
#define UI_COMPOSITOR_COMPOSITING_RECORDER_H_
#include <stdint.h>
#include "base/macros.h"
#include "ui/compositor/compositor_export.h"
#include "ui/gfx/geometry/rect.h"
namespace gfx {
class Size;
}
namespace ui {
class PaintContext;
// A class to provide scoped compositing filters (eg opacity) of painting to a
// DisplayItemList. The filters provided will be applied to any
// DisplayItems added to the DisplayItemList while this object is alive. In
// other words, any nested PaintRecorders or other such Recorders will
// be filtered by the effect.
class COMPOSITOR_EXPORT CompositingRecorder {
public:
// |alpha| is a value between 0 and 255, where 0 is transparent and 255 is
// opaque. |size_in_context| is the size in the |context|'s space surrounding
// everything that's visible. |lcd_text_requires_opaque_layer| should
// normally be true; if this is false, Skia will respect text rendering
// requests for LCD AA even if they occur on non-opaque layers. This should
// only be used in cases where the text is known to be rendered opaquely on an
// opaque background before compositing.
CompositingRecorder(const PaintContext& context,
const gfx::Size& size_in_context,
uint8_t alpha,
bool lcd_text_requires_opaque_layer);
~CompositingRecorder();
private:
const PaintContext& context_;
const gfx::Rect bounds_in_layer_;
bool saved_;
DISALLOW_COPY_AND_ASSIGN(CompositingRecorder);
};
} // namespace ui
#endif // UI_COMPOSITOR_CLIP_TRANSFORM_RECORDER_H_
|
