SimpleViewportController.h [plain text]
#ifndef SimpleViewportController_h
#define SimpleViewportController_h
#if USE(COORDINATED_GRAPHICS_THREADED)
#include <WebCore/FloatPoint.h>
#include <WebCore/FloatRect.h>
#include <WebCore/FloatSize.h>
#include <WebCore/IntRect.h>
#include <WebCore/IntSize.h>
#include <WebCore/ViewportArguments.h>
#include <wtf/Noncopyable.h>
namespace WebKit {
class SimpleViewportController {
WTF_MAKE_NONCOPYABLE(SimpleViewportController);
public:
class Client {
public:
virtual void didChangeVisibleRect() = 0;
};
explicit SimpleViewportController(Client*);
void didChangeViewportSize(const WebCore::FloatSize&);
void didChangeContentsSize(const WebCore::IntSize&);
void didChangeViewportAttribute(const WebCore::ViewportAttributes&);
void scrollBy(const WebCore::IntSize&);
void scrollTo(const WebCore::IntPoint&);
WebCore::FloatRect visibleContentsRect() const;
float pageScaleFactor() const { return m_pageScaleFactor; }
private:
WebCore::FloatSize visibleContentsSize() const;
void syncVisibleContents();
void applyScaleAfterRenderingContents(float scale);
void applyPositionAfterRenderingContents(const WebCore::FloatPoint& pos);
WebCore::FloatPoint boundContentsPosition(const WebCore::FloatPoint&) const;
WebCore::FloatPoint boundContentsPositionAtScale(const WebCore::FloatPoint&, float scale) const;
bool updateMinimumScaleToFit();
float innerBoundedViewportScale(float) const;
void resetViewportToDefaultState();
Client* m_client;
WebCore::FloatPoint m_contentsPosition;
WebCore::FloatSize m_contentsSize;
WebCore::FloatSize m_viewportSize;
float m_pageScaleFactor;
bool m_allowsUserScaling;
float m_minimumScaleToFit;
bool m_initiallyFitToViewport;
bool m_hasViewportAttribute;
WebCore::ViewportAttributes m_rawAttributes;
};
}
#endif // USE(COORDINATED_GRAPHICS_THREADED)
#endif // SimpleViewportController_h