DrawingAreaProxy.h [plain text]
#pragma once
#include "DrawingAreaInfo.h"
#include "GenericCallback.h"
#include "MessageReceiver.h"
#include "MessageSender.h"
#include <WebCore/FloatRect.h>
#include <WebCore/IntRect.h>
#include <WebCore/IntSize.h>
#include <stdint.h>
#include <wtf/Noncopyable.h>
#include <wtf/RunLoop.h>
#include <wtf/TypeCasts.h>
#if PLATFORM(COCOA)
namespace WTF {
class MachSendRight;
}
#endif
namespace WebKit {
class LayerTreeContext;
class WebPageProxy;
class WebProcessProxy;
#if USE(COORDINATED_GRAPHICS) || USE(TEXTURE_MAPPER)
class UpdateInfo;
#endif
class DrawingAreaProxy : public IPC::MessageReceiver, protected IPC::MessageSender {
WTF_MAKE_FAST_ALLOCATED;
WTF_MAKE_NONCOPYABLE(DrawingAreaProxy);
public:
virtual ~DrawingAreaProxy();
DrawingAreaType type() const { return m_type; }
DrawingAreaIdentifier identifier() const { return m_identifier; }
void startReceivingMessages();
virtual void deviceScaleFactorDidChange() = 0;
virtual void setBackingStoreIsDiscardable(bool) { }
virtual void waitForBackingStoreUpdateOnNextPaint() { }
const WebCore::IntSize& size() const { return m_size; }
bool setSize(const WebCore::IntSize&, const WebCore::IntSize& scrollOffset = { });
#if USE(COORDINATED_GRAPHICS) || USE(TEXTURE_MAPPER)
static constexpr Seconds didUpdateBackingStoreStateTimeout() { return Seconds::fromMilliseconds(500); }
#endif
virtual void colorSpaceDidChange() { }
virtual void minimumSizeForAutoLayoutDidChange() { }
virtual void sizeToContentAutoSizeMaximumSizeDidChange() { }
virtual void adjustTransientZoom(double, WebCore::FloatPoint) { }
virtual void commitTransientZoom(double, WebCore::FloatPoint) { }
#if PLATFORM(MAC)
virtual void didChangeViewExposedRect();
void viewExposedRectChangedTimerFired();
#endif
virtual void updateDebugIndicator() { }
virtual void waitForDidUpdateActivityState(ActivityStateChangeID) { }
virtual void dispatchAfterEnsuringDrawing(WTF::Function<void (CallbackBase::Error)>&&) { ASSERT_NOT_REACHED(); }
virtual void hideContentUntilPendingUpdate() { ASSERT_NOT_REACHED(); }
virtual void hideContentUntilAnyUpdate() { ASSERT_NOT_REACHED(); }
virtual bool hasVisibleContent() const { return true; }
virtual void willSendUpdateGeometry() { }
virtual void prepareForAppSuspension() { }
#if PLATFORM(COCOA)
virtual WTF::MachSendRight createFence();
#endif
virtual void dispatchPresentationCallbacksAfterFlushingLayers(const Vector<CallbackID>&) { }
WebPageProxy& page() const { return m_webPageProxy; }
WebProcessProxy& process() { return m_process.get(); }
const WebProcessProxy& process() const { return m_process.get(); }
protected:
DrawingAreaProxy(DrawingAreaType, WebPageProxy&, WebProcessProxy&);
DrawingAreaType m_type;
DrawingAreaIdentifier m_identifier;
WebPageProxy& m_webPageProxy;
Ref<WebProcessProxy> m_process;
WebCore::IntSize m_size;
WebCore::IntSize m_scrollOffset;
void didReceiveMessage(IPC::Connection&, IPC::Decoder&) override;
private:
virtual void sizeDidChange() = 0;
IPC::Connection* messageSenderConnection() const final;
uint64_t messageSenderDestinationID() const final { return m_identifier.toUInt64(); }
bool sendMessage(std::unique_ptr<IPC::Encoder>, OptionSet<IPC::SendOption>, Optional<std::pair<CompletionHandler<void(IPC::Decoder*)>, uint64_t>>&&) final;
virtual void enterAcceleratedCompositingMode(uint64_t , const LayerTreeContext&) { }
virtual void updateAcceleratedCompositingMode(uint64_t , const LayerTreeContext&) { }
virtual void didFirstLayerFlush(uint64_t , const LayerTreeContext&) { }
#if PLATFORM(COCOA)
virtual void didUpdateGeometry() { }
#if PLATFORM(MAC)
RunLoop::Timer<DrawingAreaProxy> m_viewExposedRectChangedTimer;
Optional<WebCore::FloatRect> m_lastSentViewExposedRect;
#endif // PLATFORM(MAC)
#endif
#if USE(COORDINATED_GRAPHICS) || USE(TEXTURE_MAPPER)
virtual void update(uint64_t , const UpdateInfo&) { }
virtual void didUpdateBackingStoreState(uint64_t , const UpdateInfo&, const LayerTreeContext&) { }
virtual void exitAcceleratedCompositingMode(uint64_t , const UpdateInfo&) { }
#endif
bool m_startedReceivingMessages { false };
};
}
#define SPECIALIZE_TYPE_TRAITS_DRAWING_AREA_PROXY(ToValueTypeName, ProxyType) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebKit::ToValueTypeName) \
static bool isType(const WebKit::DrawingAreaProxy& proxy) { return proxy.type() == WebKit::ProxyType; } \
SPECIALIZE_TYPE_TRAITS_END()