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
52
53
|
// Copyright (c) 2017 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_MAC_GRAPHICS_CONTEXT_CANVAS_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_MAC_GRAPHICS_CONTEXT_CANVAS_H_
#include <ApplicationServices/ApplicationServices.h>
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/skia/include/core/SkBitmap.h"
struct SkIRect;
namespace cc {
class PaintCanvas;
}
namespace blink {
// Creates a bridge for painting into a PaintCanvas with a CGContext.
class PLATFORM_EXPORT GraphicsContextCanvas {
public:
// Internally creates a bitmap the same size |paint_rect|, scaled by
// |bitmap_scale_factor|. Painting into the CgContext will go into the
// bitmap. Upon destruction, that bitmap will be painted into the
// canvas as the rectangle |paint_rect|. Users are expected to
// clip |paint_rect| to reasonable sizes to not create giant bitmaps.
// The |paint_rect| is in canvas device space. The CgContext is set
// up to be in exactly the same space as the canvas is at construction
// time.
GraphicsContextCanvas(cc::PaintCanvas*,
const SkIRect& paint_rect,
SkScalar bitmap_scale_factor = 1);
~GraphicsContextCanvas();
CGContextRef CgContext();
private:
void ReleaseIfNeeded();
cc::PaintCanvas* canvas_;
CGContextRef cg_context_;
SkBitmap offscreen_;
SkScalar bitmap_scale_factor_;
SkIRect paint_rect_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_MAC_GRAPHICS_CONTEXT_CANVAS_H_
|
