Cronet: Remove redundant success checks and waits in tests.
[chromium-blink-merge.git] / ui / gfx / image / canvas_image_source.h
blob8c1a87d4bd06dc63e25d9df4d65df253f3b7ba6a
1 // Copyright (c) 2012 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.
5 #ifndef UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_
6 #define UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_
8 #include "base/basictypes.h"
9 #include "base/compiler_specific.h"
10 #include "ui/gfx/gfx_export.h"
11 #include "ui/gfx/image/image_skia_source.h"
12 #include "ui/gfx/size.h"
14 namespace gfx {
15 class Canvas;
16 class ImageSkiaRep;
18 // CanvasImageSource is useful if you need to generate an image for
19 // a scale factor using gfx::Canvas. It creates a new Canvas
20 // with target scale factor and generates ImageSkiaRep when drawing is
21 // completed.
22 class GFX_EXPORT CanvasImageSource : public gfx::ImageSkiaSource {
23 public:
24 CanvasImageSource(const gfx::Size& size, bool is_opaque);
26 // Called when a new image needs to be drawn for a scale factor.
27 virtual void Draw(gfx::Canvas* canvas) = 0;
29 // Returns the size of images in DIP that this source will generate.
30 const gfx::Size& size() const { return size_; };
32 // Overridden from gfx::ImageSkiaSource.
33 gfx::ImageSkiaRep GetImageForScale(float scale) override;
35 protected:
36 ~CanvasImageSource() override {}
38 const gfx::Size size_;
39 const bool is_opaque_;
40 DISALLOW_COPY_AND_ASSIGN(CanvasImageSource);
43 } // namespace gfx
45 #endif // UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_