/src/mozilla-central/gfx/layers/ImageLayers.h
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1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #ifndef GFX_IMAGELAYER_H |
8 | | #define GFX_IMAGELAYER_H |
9 | | |
10 | | #include "Layers.h" // for Layer, etc |
11 | | #include "mozilla/gfx/BaseSize.h" // for BaseSize |
12 | | #include "mozilla/gfx/Point.h" // for IntSize |
13 | | #include "mozilla/layers/LayersTypes.h" |
14 | | #include "nsAutoPtr.h" // for nsRefPtr |
15 | | #include "nscore.h" // for nsACString |
16 | | |
17 | | namespace mozilla { |
18 | | namespace layers { |
19 | | |
20 | | class ImageContainer; |
21 | | |
22 | | namespace layerscope { |
23 | | class LayersPacket; |
24 | | } // namespace layerscope |
25 | | |
26 | | /** |
27 | | * A Layer which renders an Image. |
28 | | */ |
29 | | class ImageLayer : public Layer { |
30 | | public: |
31 | | /** |
32 | | * CONSTRUCTION PHASE ONLY |
33 | | * Set the ImageContainer. aContainer must have the same layer manager |
34 | | * as this layer. |
35 | | */ |
36 | | virtual void SetContainer(ImageContainer* aContainer); |
37 | | |
38 | | /** |
39 | | * CONSTRUCTION PHASE ONLY |
40 | | * Set the filter used to resample this image if necessary. |
41 | | */ |
42 | | void SetSamplingFilter(gfx::SamplingFilter aSamplingFilter) |
43 | 0 | { |
44 | 0 | if (mSamplingFilter != aSamplingFilter) { |
45 | 0 | MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) Filter", this)); |
46 | 0 | mSamplingFilter = aSamplingFilter; |
47 | 0 | Mutated(); |
48 | 0 | } |
49 | 0 | } |
50 | | |
51 | | /** |
52 | | * CONSTRUCTION PHASE ONLY |
53 | | * Set the size to scale the image to and the mode at which to scale. |
54 | | */ |
55 | | void SetScaleToSize(const gfx::IntSize &aSize, ScaleMode aMode) |
56 | 0 | { |
57 | 0 | if (mScaleToSize != aSize || mScaleMode != aMode) { |
58 | 0 | mScaleToSize = aSize; |
59 | 0 | mScaleMode = aMode; |
60 | 0 | Mutated(); |
61 | 0 | } |
62 | 0 | } |
63 | | |
64 | | |
65 | 0 | ImageContainer* GetContainer() { return mContainer; } |
66 | 0 | gfx::SamplingFilter GetSamplingFilter() { return mSamplingFilter; } |
67 | 0 | const gfx::IntSize& GetScaleToSize() { return mScaleToSize; } |
68 | 0 | ScaleMode GetScaleMode() { return mScaleMode; } |
69 | | |
70 | | MOZ_LAYER_DECL_NAME("ImageLayer", TYPE_IMAGE) |
71 | | |
72 | | virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface) override; |
73 | | |
74 | | virtual const gfx::Matrix4x4& GetEffectiveTransformForBuffer() const override |
75 | 0 | { |
76 | 0 | return mEffectiveTransformForBuffer; |
77 | 0 | } |
78 | | |
79 | 0 | virtual ImageLayer* AsImageLayer() override { return this; } |
80 | | |
81 | | protected: |
82 | | ImageLayer(LayerManager* aManager, void* aImplData); |
83 | | ~ImageLayer(); |
84 | | virtual void PrintInfo(std::stringstream& aStream, const char* aPrefix) override; |
85 | | virtual void DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent) override; |
86 | | |
87 | | RefPtr<ImageContainer> mContainer; |
88 | | gfx::SamplingFilter mSamplingFilter; |
89 | | gfx::IntSize mScaleToSize; |
90 | | ScaleMode mScaleMode; |
91 | | gfx::Matrix4x4 mEffectiveTransformForBuffer; |
92 | | }; |
93 | | |
94 | | } // namespace layers |
95 | | } // namespace mozilla |
96 | | |
97 | | #endif /* GFX_IMAGELAYER_H */ |