#ifndef CSSCanvasValue_h
#define CSSCanvasValue_h
#include "CSSImageGeneratorValue.h"
#include "HTMLCanvasElement.h"
namespace WebCore {
class Document;
class CSSCanvasValue : public CSSImageGeneratorValue {
public:
static PassRef<CSSCanvasValue> create(const String& name) { return adoptRef(*new CSSCanvasValue(name)); }
~CSSCanvasValue();
String customCSSText() const;
PassRefPtr<Image> image(RenderElement*, const FloatSize&);
bool isFixedSize() const { return true; }
FloatSize fixedSize(const RenderElement*);
bool isPending() const { return false; }
void loadSubimages(CachedResourceLoader*, const ResourceLoaderOptions&) { }
bool equals(const CSSCanvasValue&) const;
private:
explicit CSSCanvasValue(const String& name)
: CSSImageGeneratorValue(CanvasClass)
, m_canvasObserver(*this)
, m_name(name)
, m_element(0)
{
}
class CanvasObserverProxy final : public CanvasObserver {
public:
explicit CanvasObserverProxy(CSSCanvasValue& ownerValue)
: m_ownerValue(ownerValue)
{
}
virtual ~CanvasObserverProxy()
{
}
private:
virtual void canvasChanged(HTMLCanvasElement& canvas, const FloatRect& changedRect) override
{
m_ownerValue.canvasChanged(canvas, changedRect);
}
virtual void canvasResized(HTMLCanvasElement& canvas) override
{
m_ownerValue.canvasResized(canvas);
}
virtual void canvasDestroyed(HTMLCanvasElement& canvas) override
{
m_ownerValue.canvasDestroyed(canvas);
}
CSSCanvasValue& m_ownerValue;
};
void canvasChanged(HTMLCanvasElement&, const FloatRect& changedRect);
void canvasResized(HTMLCanvasElement&);
void canvasDestroyed(HTMLCanvasElement&);
HTMLCanvasElement* element(Document&);
CanvasObserverProxy m_canvasObserver;
String m_name;
HTMLCanvasElement* m_element;
};
CSS_VALUE_TYPE_CASTS(CSSCanvasValue, isCanvasValue())
}
#endif // CSSCanvasValue_h