#ifndef ImageBuffer_h
#define ImageBuffer_h
#include "AffineTransform.h"
#include "ColorSpace.h"
#include "GraphicsTypes.h"
#include "GraphicsTypes3D.h"
#include "IntSize.h"
#include "ImageBufferData.h"
#include "PlatformLayer.h"
#include <runtime/Uint8ClampedArray.h>
#include <wtf/Forward.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class FloatRect;
class GraphicsContext;
class GraphicsContext3D;
class Image;
class ImageData;
class IntPoint;
class IntRect;
enum Multiply {
Premultiplied,
Unmultiplied
};
enum BackingStoreCopy {
CopyBackingStore, DontCopyBackingStore };
enum ScaleBehavior {
Scaled,
Unscaled
};
class ImageBuffer {
WTF_MAKE_NONCOPYABLE(ImageBuffer); WTF_MAKE_FAST_ALLOCATED;
friend class IOSurface;
public:
static std::unique_ptr<ImageBuffer> create(const FloatSize& size, RenderingMode renderingMode, float resolutionScale = 1, ColorSpace colorSpace = ColorSpaceSRGB)
{
bool success = false;
std::unique_ptr<ImageBuffer> buffer(new ImageBuffer(size, resolutionScale, colorSpace, renderingMode, success));
if (!success)
return nullptr;
return buffer;
}
static std::unique_ptr<ImageBuffer> createCompatibleBuffer(const FloatSize&, const GraphicsContext&);
static std::unique_ptr<ImageBuffer> createCompatibleBuffer(const FloatSize&, ColorSpace, const GraphicsContext&);
static std::unique_ptr<ImageBuffer> createCompatibleBuffer(const FloatSize&, float resolutionScale, ColorSpace, const GraphicsContext&);
static IntSize compatibleBufferSize(const FloatSize&, const GraphicsContext&);
bool isCompatibleWithContext(const GraphicsContext&) const;
WEBCORE_EXPORT ~ImageBuffer();
const IntSize& internalSize() const { return m_size; }
const IntSize& logicalSize() const { return m_logicalSize; }
FloatSize sizeForDestinationSize(FloatSize) const;
float resolutionScale() const { return m_resolutionScale; }
WEBCORE_EXPORT GraphicsContext& context() const;
WEBCORE_EXPORT RefPtr<Image> copyImage(BackingStoreCopy = CopyBackingStore, ScaleBehavior = Scaled) const;
WEBCORE_EXPORT static RefPtr<Image> sinkIntoImage(std::unique_ptr<ImageBuffer>, ScaleBehavior = Scaled);
static BackingStoreCopy fastCopyImageMode();
enum CoordinateSystem { LogicalCoordinateSystem, BackingStoreCoordinateSystem };
RefPtr<Uint8ClampedArray> getUnmultipliedImageData(const IntRect&, CoordinateSystem = LogicalCoordinateSystem) const;
RefPtr<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, m_data.backingStoreSize.height()); }
#endif
PlatformLayer* platformLayer() const;
#if USE(CAIRO)
NativeImagePtr nativeImage() const;
#endif
size_t memoryCost() const;
size_t externalMemoryCost() const;
bool copyToPlatformTexture(GraphicsContext3D&, GC3Denum, Platform3DObject, GC3Denum, bool, bool);
static bool sizeNeedsClamping(const FloatSize&);
static bool sizeNeedsClamping(const FloatSize&, FloatSize& scale);
static FloatSize clampedSize(const FloatSize&);
static FloatSize clampedSize(const FloatSize&, FloatSize& scale);
static FloatRect clampedRect(const FloatRect&);
private:
#if USE(CG)
RetainPtr<CGImageRef> copyNativeImage(BackingStoreCopy = CopyBackingStore) const;
static RetainPtr<CGImageRef> sinkIntoNativeImage(std::unique_ptr<ImageBuffer>);
void flushContext() const;
#endif
void draw(GraphicsContext&, const FloatRect& destRect, const FloatRect& srcRect = FloatRect(0, 0, -1, -1), CompositeOperator = CompositeSourceOver, BlendMode = BlendModeNormal);
void drawPattern(GraphicsContext&, const FloatRect& srcRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator, const FloatRect& destRect, BlendMode = BlendModeNormal);
static void drawConsuming(std::unique_ptr<ImageBuffer>, GraphicsContext&, const FloatRect& destRect, const FloatRect& srcRect = FloatRect(0, 0, -1, -1), CompositeOperator = CompositeSourceOver, BlendMode = BlendModeNormal);
inline void genericConvertToLuminanceMask();
friend class GraphicsContext;
friend class GeneratedImage;
friend class CrossfadeGeneratedImage;
friend class NamedImageGeneratedImage;
friend class GradientImage;
private:
ImageBufferData m_data;
IntSize m_size;
IntSize m_logicalSize;
float m_resolutionScale;
WEBCORE_EXPORT ImageBuffer(const FloatSize&, float resolutionScale, ColorSpace, RenderingMode, bool& success);
#if USE(CG)
ImageBuffer(const FloatSize&, float resolutionScale, CGColorSpaceRef, RenderingMode, bool& success);
#endif
};
#if USE(CG)
String ImageDataToDataURL(const ImageData&, const String& mimeType, const double* quality);
#endif
}
#endif // ImageBuffer_h