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/*
* Copyright (C) 2009, 2010, 2011 Research In Motion Limited. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef BackingStore_h
#define BackingStore_h
#include "BlackBerryGlobal.h"
#include <BlackBerryPlatformGraphics.h>
namespace WebCore {
class ChromeClientBlackBerry;
class FloatPoint;
class FrameLoaderClientBlackBerry;
class GLES2Context;
class IntRect;
}
namespace BlackBerry {
namespace Platform {
class IntRect;
}
}
namespace BlackBerry {
namespace WebKit {
class WebPage;
class WebPagePrivate;
class WebPageCompositorPrivate;
class BackingStorePrivate;
class BackingStoreClient;
class BLACKBERRY_EXPORT BackingStore {
public:
enum ResumeUpdateOperation { None, Blit, RenderAndBlit };
BackingStore(WebPage*, BackingStoreClient*);
virtual ~BackingStore();
void createSurface();
void suspendScreenAndBackingStoreUpdates();
void resumeScreenAndBackingStoreUpdates(ResumeUpdateOperation);
bool isScrollingOrZooming() const;
void setScrollingOrZooming(bool);
void blitVisibleContents();
void repaint(int x, int y, int width, int height, bool contentChanged, bool immediate);
// In the defers blit mode, any blit requests will just return early, and
// a blit job will be queued that is executed by calling blitOnIdle().
bool defersBlit() const;
void setDefersBlit(bool);
bool hasBlitJobs() const;
void blitOnIdle();
bool isDirectRenderingToWindow() const;
void createBackingStoreMemory();
void releaseBackingStoreMemory();
void drawContents(Platform::Graphics::Drawable*, const Platform::IntRect& /*contentsRect*/, const Platform::IntSize& /*destinationSize*/);
private:
friend class BlackBerry::WebKit::BackingStoreClient;
friend class BlackBerry::WebKit::WebPage;
friend class BlackBerry::WebKit::WebPagePrivate; // FIXME: For now, we expose our internals to WebPagePrivate. See PR #120301.
friend class BlackBerry::WebKit::WebPageCompositorPrivate;
friend class WebCore::ChromeClientBlackBerry;
friend class WebCore::FrameLoaderClientBlackBerry;
friend class WebCore::GLES2Context;
BackingStorePrivate *d;
};
}
}
#endif // BackingStore_h
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