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26 #ifndef WebCompositorSupport_h
27 #define WebCompositorSupport_h
29 #include "WebAnimation.h"
30 #include "WebCommon.h"
31 #include "WebLayerTreeView.h"
32 #include "WebScrollbarThemePainter.h"
36 class WebAnimationCurve;
37 class WebCompositorOutputSurface;
38 class WebContentLayer;
39 class WebContentLayerClient;
40 class WebExternalTextureLayer;
41 class WebExternalTextureLayerClient;
42 class WebFloatAnimationCurve;
43 class WebGraphicsContext3D;
44 class WebIOSurfaceLayer;
48 class WebScrollbarLayer;
49 class WebScrollbarThemeGeometry;
50 class WebSolidColorLayer;
52 class WebTransformAnimationCurve;
53 class WebTransformOperations;
54 class WebVideoFrameProvider;
57 class WebCompositorSupport {
59 // Initializes the compositor. Threaded compositing is enabled by passing in
60 // a non-null WebThread. No compositor classes or methods should be used
61 // prior to calling initialize.
62 virtual void initialize(WebThread*) { }
64 // Returns whether the compositor was initialized with threading enabled.
65 virtual bool isThreadingEnabled() { return false; }
67 // Shuts down the compositor. This must be called when all compositor data
68 // types have been deleted. No compositor classes or methods should be used
70 virtual void shutdown() { }
72 // Creates an output surface for the compositor backed by a 3d context.
73 virtual WebCompositorOutputSurface* createOutputSurfaceFor3D(WebKit::WebGraphicsContext3D*) { return 0; }
75 // Creates an output surface for the compositor backed by a software device.
76 virtual WebCompositorOutputSurface* createOutputSurfaceForSoftware() { return 0; }
78 // Layers -------------------------------------------------------
80 virtual WebLayer* createLayer() { return 0; }
82 virtual WebContentLayer* createContentLayer(WebContentLayerClient*) { return 0; }
84 virtual WebExternalTextureLayer* createExternalTextureLayer(WebExternalTextureLayerClient* = 0) { return 0; }
86 virtual WebIOSurfaceLayer* createIOSurfaceLayer() { return 0; }
88 virtual WebImageLayer* createImageLayer() { return 0; }
90 virtual WebSolidColorLayer* createSolidColorLayer() { return 0; }
92 virtual WebVideoLayer* createVideoLayer(WebVideoFrameProvider*) { return 0; }
94 virtual WebScrollbarLayer* createScrollbarLayer(WebScrollbar*, WebScrollbarThemePainter, WebScrollbarThemeGeometry*) { return 0; }
97 // Animation ----------------------------------------------------
99 virtual WebAnimation* createAnimation(const WebAnimationCurve&, WebAnimation::TargetProperty, int animationId = 0) { return 0; }
101 virtual WebFloatAnimationCurve* createFloatAnimationCurve() { return 0; }
103 virtual WebTransformAnimationCurve* createTransformAnimationCurve() { return 0; }
105 virtual WebTransformOperations* createTransformOperations() { return 0; }
108 // Testing ------------------------------------------------------
111 // May return 0 if initialization fails.
112 virtual WebLayerTreeView* createLayerTreeView(WebLayerTreeViewClient*, const WebLayer& root, const WebLayerTreeView::Settings&) { return 0; }
115 virtual ~WebCompositorSupport() { }
120 #endif // WebCompositorSupport_h