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Side by Side Diff: content/renderer/compositor_bindings/web_layer_impl_fixed_bounds.h

Issue 470983004: Move blink<->cc bindings to cc/blink (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: rebase Created 6 years, 4 months ago
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1 // Copyright 2014 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
5 #ifndef CONTENT_RENDERER_COMPOSITOR_BINDINGS_WEB_LAYER_IMPL_FIXED_BOUNDS_H_
6 #define CONTENT_RENDERER_COMPOSITOR_BINDINGS_WEB_LAYER_IMPL_FIXED_BOUNDS_H_
7
8 #include "content/renderer/compositor_bindings/web_layer_impl.h"
9 #include "ui/gfx/size.h"
10 #include "ui/gfx/transform.h"
11
12 namespace content {
13
14 // A special implementation of WebLayerImpl for layers that its contents
15 // need to be automatically scaled when the bounds changes. The compositor
16 // can efficiently handle the bounds change of such layers if the bounds
17 // is fixed to a given value and the change of bounds are converted to
18 // transformation scales.
19 class WebLayerImplFixedBounds : public WebLayerImpl {
20 public:
21 CONTENT_EXPORT WebLayerImplFixedBounds();
22 CONTENT_EXPORT explicit WebLayerImplFixedBounds(
23 scoped_refptr<cc::Layer>);
24 virtual ~WebLayerImplFixedBounds();
25
26 // WebLayerImpl overrides.
27 virtual void invalidateRect(const blink::WebFloatRect& rect);
28 virtual void setTransformOrigin(
29 const blink::WebFloatPoint3D& transform_origin);
30 virtual void setBounds(const blink::WebSize& bounds);
31 virtual blink::WebSize bounds() const;
32 virtual void setTransform(const SkMatrix44& transform);
33 virtual SkMatrix44 transform() const;
34
35 CONTENT_EXPORT void SetFixedBounds(gfx::Size bounds);
36
37 protected:
38 void SetTransformInternal(const gfx::Transform& transform);
39 void UpdateLayerBoundsAndTransform();
40
41 gfx::Transform original_transform_;
42 gfx::Size original_bounds_;
43 gfx::Size fixed_bounds_;
44
45 private:
46 DISALLOW_COPY_AND_ASSIGN(WebLayerImplFixedBounds);
47 };
48
49 } // namespace content
50
51 #endif // CONTENT_RENDERER_COMPOSITOR_BINDINGS_WEB_LAYER_IMPL_FIXED_BOUNDS_H_
52
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