blob: 36be94049f5170c28670ee1cab83978472b9133a [file] [log] [blame]
/*
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2014 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 APPLE INC. AND ITS CONTRIBUTORS ``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 APPLE INC. OR ITS 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 BitmapTexture_h
#define BitmapTexture_h
#include "IntPoint.h"
#include "IntRect.h"
#include "IntSize.h"
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class FilterOperations;
class GraphicsLayer;
class Image;
class TextureMapper;
// A 2D texture that can be the target of software or GL rendering.
class BitmapTexture : public RefCounted<BitmapTexture> {
public:
enum Flag {
NoFlag = 0,
SupportsAlpha = 0x01,
};
typedef unsigned Flags;
BitmapTexture()
: m_flags(0)
{
}
virtual ~BitmapTexture() = default;
virtual bool isBackedByOpenGL() const { return false; }
virtual IntSize size() const = 0;
virtual void updateContents(Image*, const IntRect&, const IntPoint& offset) = 0;
void updateContents(GraphicsLayer*, const IntRect& target, const IntPoint& offset, float scale = 1);
virtual void updateContents(const void*, const IntRect& target, const IntPoint& offset, int bytesPerLine) = 0;
virtual bool isValid() const = 0;
inline Flags flags() const { return m_flags; }
virtual int bpp() const { return 32; }
void reset(const IntSize& size, Flags flags = 0)
{
m_flags = flags;
m_contentSize = size;
didReset();
}
virtual void didReset() { }
inline IntSize contentSize() const { return m_contentSize; }
inline int numberOfBytes() const { return size().width() * size().height() * bpp() >> 3; }
inline bool isOpaque() const { return !(m_flags & SupportsAlpha); }
virtual RefPtr<BitmapTexture> applyFilters(TextureMapper&, const FilterOperations&, bool) { return this; }
protected:
IntSize m_contentSize;
private:
Flags m_flags;
};
}
#endif // BitmapTexture_h