1/*
2 * Copyright (C) 2011 Apple Inc. All rights reserved.
3 * Copyright (C) 2012 Igalia S.L.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
24 * THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef LayerTreeHostGtk_h
28#define LayerTreeHostGtk_h
29
30#if USE(TEXTURE_MAPPER_GL)
31
32#include "LayerTreeContext.h"
33#include "LayerTreeHost.h"
34#include "TextureMapperLayer.h"
35#include <WebCore/GLContext.h>
36#include <WebCore/GraphicsLayerClient.h>
37#include <wtf/HashMap.h>
38#include <wtf/OwnPtr.h>
39#include <wtf/gobject/GMainLoopSource.h>
40
41namespace WebKit {
42
43class LayerTreeHostGtk : public LayerTreeHost, WebCore::GraphicsLayerClient {
44public:
45    static PassRefPtr<LayerTreeHostGtk> create(WebPage*);
46    virtual ~LayerTreeHostGtk();
47
48protected:
49    explicit LayerTreeHostGtk(WebPage*);
50
51    WebCore::GraphicsLayer* rootLayer() const { return m_rootLayer.get(); }
52
53    void initialize();
54
55    // LayerTreeHost.
56    virtual void invalidate();
57    virtual void sizeDidChange(const WebCore::IntSize& newSize);
58    virtual void deviceOrPageScaleFactorChanged();
59    virtual void forceRepaint();
60    virtual void setRootCompositingLayer(WebCore::GraphicsLayer*);
61    virtual void scheduleLayerFlush();
62    virtual void setLayerFlushSchedulingEnabled(bool layerFlushingEnabled);
63    virtual void pageBackgroundTransparencyChanged() override;
64
65private:
66    // LayerTreeHost.
67    virtual const LayerTreeContext& layerTreeContext();
68    virtual void setShouldNotifyAfterNextScheduledLayerFlush(bool);
69
70    virtual void setNonCompositedContentsNeedDisplay() override;
71    virtual void setNonCompositedContentsNeedDisplayInRect(const WebCore::IntRect&) override;
72    virtual void scrollNonCompositedContents(const WebCore::IntRect& scrollRect);
73
74    virtual void didInstallPageOverlay(PageOverlay*) override;
75    virtual void didUninstallPageOverlay(PageOverlay*) override;
76    virtual void setPageOverlayNeedsDisplay(PageOverlay*, const WebCore::IntRect&) override;
77
78    virtual bool flushPendingLayerChanges();
79
80    // GraphicsLayerClient
81    virtual void notifyAnimationStarted(const WebCore::GraphicsLayer*, double time);
82    virtual void notifyFlushRequired(const WebCore::GraphicsLayer*);
83    virtual void paintContents(const WebCore::GraphicsLayer*, WebCore::GraphicsContext&, WebCore::GraphicsLayerPaintingPhase, const WebCore::FloatRect& clipRect);
84    virtual void didCommitChangesForLayer(const WebCore::GraphicsLayer*) const { }
85
86    void createPageOverlayLayer(PageOverlay*);
87    void destroyPageOverlayLayer(PageOverlay*);
88
89    enum CompositePurpose { ForResize, NotForResize };
90    void compositeLayersToContext(CompositePurpose = NotForResize);
91
92    void flushAndRenderLayers();
93    void cancelPendingLayerFlush();
94
95    void layerFlushTimerFired();
96
97    WebCore::GLContext* glContext();
98
99    LayerTreeContext m_layerTreeContext;
100    bool m_isValid;
101    bool m_notifyAfterScheduledLayerFlush;
102    std::unique_ptr<WebCore::GraphicsLayer> m_rootLayer;
103    std::unique_ptr<WebCore::GraphicsLayer> m_nonCompositedContentLayer;
104    typedef HashMap<PageOverlay*, std::unique_ptr<WebCore::GraphicsLayer>> PageOverlayLayerMap;
105    PageOverlayLayerMap m_pageOverlayLayers;
106    std::unique_ptr<WebCore::TextureMapper> m_textureMapper;
107    OwnPtr<WebCore::GLContext> m_context;
108    double m_lastFlushTime;
109    bool m_layerFlushSchedulingEnabled;
110    GMainLoopSource m_layerFlushTimerCallback;
111};
112
113} // namespace WebKit
114
115#endif
116
117#endif // LayerTreeHostGtk_h
118