#ifndef ImageBuffer_h
#define ImageBuffer_h
#include "AffineTransform.h"
#include "ColorSpace.h"
#include "FloatRect.h"
#include "GraphicsContext.h"
#if USE(ACCELERATED_COMPOSITING)
#include "GraphicsLayer.h"
#endif
#include "GraphicsTypes.h"
#include "IntSize.h"
#include "ImageBufferData.h"
#include <wtf/Forward.h>
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/Uint8ClampedArray.h>
#include <wtf/Vector.h>
namespace WebCore {
class Image;
class ImageData;
class IntPoint;
class IntRect;
enum Multiply {
Premultiplied,
Unmultiplied
};
enum RenderingMode {
Unaccelerated,
UnacceleratedNonPlatformBuffer, Accelerated
};
enum BackingStoreCopy {
CopyBackingStore, DontCopyBackingStore };
enum DeferralMode {
NonDeferred,
Deferred
};
enum ScaleBehavior {
Scaled,
Unscaled
};
class ImageBuffer {
WTF_MAKE_NONCOPYABLE(ImageBuffer); WTF_MAKE_FAST_ALLOCATED;
public:
static PassOwnPtr<ImageBuffer> create(const IntSize& size, float resolutionScale = 1, ColorSpace colorSpace = ColorSpaceDeviceRGB, RenderingMode renderingMode = Unaccelerated, DeferralMode deferralMode = NonDeferred)
{
bool success = false;
OwnPtr<ImageBuffer> buf = adoptPtr(new ImageBuffer(size, resolutionScale, colorSpace, renderingMode, deferralMode, success));
if (!success)
return nullptr;
return buf.release();
}
~ImageBuffer();
const IntSize& internalSize() const { return m_size; }
const IntSize& logicalSize() const { return m_logicalSize; }
GraphicsContext* context() const;
PassRefPtr<Image> copyImage(BackingStoreCopy = CopyBackingStore, ScaleBehavior = Scaled) const;
enum CoordinateSystem { LogicalCoordinateSystem, BackingStoreCoordinateSystem };
PassRefPtr<Uint8ClampedArray> getUnmultipliedImageData(const IntRect&, CoordinateSystem = LogicalCoordinateSystem) const;
PassRefPtr<Uint8ClampedArray> getPremultipliedImageData(const IntRect&, CoordinateSystem = LogicalCoordinateSystem) const;
void putByteArray(Multiply multiplied, Uint8ClampedArray*, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint, CoordinateSystem = LogicalCoordinateSystem);
void convertToLuminanceMask();
String toDataURL(const String& mimeType, const double* quality = 0, CoordinateSystem = LogicalCoordinateSystem) const;
#if !USE(CG)
AffineTransform baseTransform() const { return AffineTransform(); }
void transformColorSpace(ColorSpace srcColorSpace, ColorSpace dstColorSpace);
void platformTransformColorSpace(const Vector<int>&);
#else
AffineTransform baseTransform() const { return AffineTransform(1, 0, 0, -1, 0, internalSize().height()); }
#endif
#if USE(ACCELERATED_COMPOSITING)
PlatformLayer* platformLayer() const;
#endif
private:
#if USE(CG)
NativeImagePtr copyNativeImage(BackingStoreCopy = CopyBackingStore) const;
#endif
void clip(GraphicsContext*, const FloatRect&) const;
void draw(GraphicsContext*, ColorSpace, const FloatRect& destRect, const FloatRect& srcRect = FloatRect(0, 0, -1, -1), CompositeOperator = CompositeSourceOver, bool useLowQualityScale = false);
void drawPattern(GraphicsContext*, const FloatRect& srcRect, const AffineTransform& patternTransform, const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator, const FloatRect& destRect);
inline void genericConvertToLuminanceMask();
friend class GraphicsContext;
friend class GeneratedImage;
friend class CrossfadeGeneratedImage;
friend class GeneratorGeneratedImage;
private:
ImageBufferData m_data;
IntSize m_size;
IntSize m_logicalSize;
float m_resolutionScale;
OwnPtr<GraphicsContext> m_context;
#if !USE(CG)
Vector<int> m_linearRgbLUT;
Vector<int> m_deviceRgbLUT;
#endif
ImageBuffer(const IntSize&, float resolutionScale, ColorSpace, RenderingMode, DeferralMode, bool& success);
};
#if USE(CG) || USE(SKIA)
String ImageDataToDataURL(const ImageData&, const String& mimeType, const double* quality);
#endif
}
#endif // ImageBuffer_h