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/*
* Copyright 2010, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef BackedDoubleBufferedTexture_h
#define BackedDoubleBufferedTexture_h
#include "DoubleBufferedTexture.h"
#include "GLWebViewState.h"
#include <SkBitmap.h>
class SkCanvas;
namespace WebCore {
class BaseTile;
class PaintingInfo {
public:
PaintingInfo() : m_x(-1), m_y(-1), m_webview(0), m_picture(0) { }
PaintingInfo(int x, int y, GLWebViewState* webview)
: m_x(x)
, m_y(y)
, m_webview(webview)
, m_picture(0)
{
if(webview)
m_picture = webview->currentPictureCounter();
}
bool operator==(const PaintingInfo& info)
{
return m_webview == info.m_webview
&& m_x == info.m_x
&& m_y == info.m_y
&& m_picture == info.m_picture;
}
bool similar(const PaintingInfo& info)
{
return m_webview == info.m_webview
&& m_x == info.m_x
&& m_y == info.m_y;
}
void setPosition(int x, int y) { m_x = x; m_y = y; }
void setGLWebViewState(GLWebViewState* webview) { m_webview = webview; }
void setPictureUsed(unsigned int picture) { m_picture = picture; }
private:
int m_x;
int m_y;
GLWebViewState* m_webview;
unsigned int m_picture;
};
// DoubleBufferedTexture using a SkBitmap as backing mechanism
class BackedDoubleBufferedTexture : public DoubleBufferedTexture {
public:
// ctor called on consumer thread
BackedDoubleBufferedTexture(uint32_t w, uint32_t h,
SkBitmap::Config config = SkBitmap::kARGB_8888_Config);
virtual ~BackedDoubleBufferedTexture();
void setBitmap(uint32_t w, uint32_t h, SkBitmap::Config config = SkBitmap::kARGB_8888_Config);
void update(TextureInfo* textureInfo, PaintingInfo& info);
SkCanvas* canvas() { return m_canvas; }
// Level can be -1 (unused texture), 0 (the 9 tiles intersecting with the
// viewport), then the distance between the viewport and the tile.
// we use this to prioritize which texture we want to pick (see
// TilesManager::getAvailableTexture())
int usedLevel() { android::Mutex::Autolock lock(m_varLock); return m_usedLevel; }
void setUsedLevel(int used) { android::Mutex::Autolock lock(m_varLock); m_usedLevel = used; }
BaseTile* owner() { android::Mutex::Autolock lock(m_varLock); return m_owner; }
void setOwner(BaseTile* owner);
BaseTile* painter() { return m_painter; }
void setPainter(BaseTile* painter);
bool busy() { android::Mutex::Autolock lock(m_varLock); return m_busy; }
void setBusy(bool value) { android::Mutex::Autolock lock(m_varLock); m_busy = value; }
uint32_t width() { return m_width; }
uint32_t height() { return m_height; }
bool consumerTextureUpToDate(PaintingInfo& info);
bool consumerTextureSimilar(PaintingInfo& info);
bool acquire(BaseTile* owner);
bool acquireForPainting();
private:
SkBitmap m_bitmap;
SkCanvas* m_canvas;
uint32_t m_width;
uint32_t m_height;
int m_usedLevel;
BaseTile* m_owner;
BaseTile* m_painter;
PaintingInfo m_paintingInfoA;
PaintingInfo m_paintingInfoB;
bool m_busy;
};
} // namespace WebCore
#endif // BackedDoubleBufferedTexture_h
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