2 * Copyright (C) 2011 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
26 #ifndef DrawingAreaProxyImpl_h
27 #define DrawingAreaProxyImpl_h
29 #include "BackingStore.h"
30 #include "DrawingAreaProxy.h"
31 #include "LayerTreeContext.h"
32 #include <WebCore/RunLoop.h>
33 #include <wtf/OwnPtr.h>
34 #include <wtf/PassOwnPtr.h>
36 #if ENABLE(TIZEN_WEBKIT2_TILED_AC)
46 class LayerTreeCoordinatorProxy;
48 class DrawingAreaProxyImpl : public DrawingAreaProxy {
50 static PassOwnPtr<DrawingAreaProxyImpl> create(WebPageProxy*);
51 virtual ~DrawingAreaProxyImpl();
53 void paint(BackingStore::PlatformGraphicsContext, const WebCore::IntRect&, WebCore::Region& unpaintedRegion);
55 #if ENABLE(TIZEN_WEBKIT2_TILED_AC)
56 #if ENABLE(TIZEN_WEBKIT2_DIRECT_RENDERING)
57 virtual void setAngle(int);
59 virtual void didSuspendPainting();
63 explicit DrawingAreaProxyImpl(WebPageProxy*);
66 virtual void sizeDidChange();
67 virtual void deviceScaleFactorDidChange();
68 virtual void layerHostingModeDidChange() OVERRIDE;
70 virtual void visibilityDidChange();
71 virtual void setBackingStoreIsDiscardable(bool);
72 virtual void waitForBackingStoreUpdateOnNextPaint();
74 // CoreIPC message handlers
75 virtual void update(uint64_t backingStoreStateID, const UpdateInfo&);
76 virtual void didUpdateBackingStoreState(uint64_t backingStoreStateID, const UpdateInfo&, const LayerTreeContext&);
77 virtual void enterAcceleratedCompositingMode(uint64_t backingStoreStateID, const LayerTreeContext&);
78 virtual void exitAcceleratedCompositingMode(uint64_t backingStoreStateID, const UpdateInfo&);
79 virtual void updateAcceleratedCompositingMode(uint64_t backingStoreStateID, const LayerTreeContext&);
81 void incorporateUpdate(const UpdateInfo&);
83 enum RespondImmediatelyOrNot { DoNotRespondImmediately, RespondImmediately };
84 void backingStoreStateDidChange(RespondImmediatelyOrNot);
85 void sendUpdateBackingStoreState(RespondImmediatelyOrNot);
86 void waitForAndDispatchDidUpdateBackingStoreState();
88 #if USE(ACCELERATED_COMPOSITING)
89 void enterAcceleratedCompositingMode(const LayerTreeContext&);
90 void exitAcceleratedCompositingMode();
91 void updateAcceleratedCompositingMode(const LayerTreeContext&);
93 bool isInAcceleratedCompositingMode() const { return !m_layerTreeContext.isEmpty(); }
95 #if USE(UI_SIDE_COMPOSITING)
96 virtual void setVisibleContentsRect(const WebCore::IntRect& visibleContentsRect, float scale, const WebCore::FloatPoint& trajectory, const WebCore::FloatPoint& accurateVisibleContentsPosition = WebCore::FloatPoint());
97 void didReceiveLayerTreeCoordinatorProxyMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
98 #if ENABLE(TIZEN_CSS_OVERFLOW_SCROLL_ACCELERATION_ON_UI_SIDE)
99 virtual void setVisibleContentsRectForScrollingContentsLayers(const WebCore::IntRect&);
103 bool isInAcceleratedCompositingMode() const { return false; }
106 virtual void pageCustomRepresentationChanged();
108 void discardBackingStoreSoon();
109 void discardBackingStore();
111 // The state ID corresponding to our current backing store. Updated whenever we allocate
112 // a new backing store. Any messages received that correspond to an earlier state are ignored,
113 // as they don't apply to our current backing store.
114 uint64_t m_currentBackingStoreStateID;
116 // The next backing store state ID we will request the web process update to. Incremented
117 // whenever our state changes in a way that will require a new backing store to be allocated.
118 uint64_t m_nextBackingStoreStateID;
120 #if USE(ACCELERATED_COMPOSITING)
121 // The current layer tree context.
122 LayerTreeContext m_layerTreeContext;
125 // Whether we've sent a UpdateBackingStoreState message and are now waiting for a DidUpdateBackingStoreState message.
126 // Used to throttle UpdateBackingStoreState messages so we don't send them faster than the Web process can handle.
127 bool m_isWaitingForDidUpdateBackingStoreState;
129 // For a new Drawing Area don't draw anything until the WebProcess has sent over the first content.
130 bool m_hasReceivedFirstUpdate;
132 bool m_isBackingStoreDiscardable;
133 OwnPtr<BackingStore> m_backingStore;
135 WebCore::RunLoop::Timer<DrawingAreaProxyImpl> m_discardBackingStoreTimer;
138 } // namespace WebKit
140 #endif // DrawingAreaProxyImpl_h