| /* |
| * Copyright (C) 2010-2018 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include "CallbackID.h" |
| #include "DrawingAreaInfo.h" |
| #include "LayerTreeContext.h" |
| #include "MessageReceiver.h" |
| #include "WebPage.h" |
| #include <WebCore/ActivityState.h> |
| #include <WebCore/FloatRect.h> |
| #include <WebCore/IntRect.h> |
| #include <WebCore/LayerFlushThrottleState.h> |
| #include <WebCore/LayoutMilestone.h> |
| #include <WebCore/PlatformScreen.h> |
| #include <wtf/Forward.h> |
| #include <wtf/Noncopyable.h> |
| #include <wtf/TypeCasts.h> |
| |
| namespace WTF { |
| class MachSendRight; |
| } |
| |
| namespace IPC { |
| class Connection; |
| class Decoder; |
| } |
| |
| namespace WebCore { |
| class DisplayRefreshMonitor; |
| class Frame; |
| class FrameView; |
| class GraphicsLayer; |
| class GraphicsLayerFactory; |
| struct ViewportAttributes; |
| } |
| |
| namespace WebKit { |
| |
| struct ColorSpaceData; |
| class LayerTreeHost; |
| struct WebPageCreationParameters; |
| struct WebPreferencesStore; |
| |
| class DrawingArea : public IPC::MessageReceiver { |
| WTF_MAKE_FAST_ALLOCATED; |
| WTF_MAKE_NONCOPYABLE(DrawingArea); |
| |
| public: |
| static std::unique_ptr<DrawingArea> create(WebPage&, const WebPageCreationParameters&); |
| virtual ~DrawingArea(); |
| |
| DrawingAreaType type() const { return m_type; } |
| DrawingAreaIdentifier identifier() const { return m_identifier; } |
| |
| virtual void setNeedsDisplay() = 0; |
| virtual void setNeedsDisplayInRect(const WebCore::IntRect&) = 0; |
| virtual void scroll(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollDelta) = 0; |
| |
| // FIXME: These should be pure virtual. |
| virtual void forceRepaint() { } |
| virtual bool forceRepaintAsync(CallbackID) { return false; } |
| virtual void setLayerTreeStateIsFrozen(bool) { } |
| virtual bool layerTreeStateIsFrozen() const { return false; } |
| virtual bool layerFlushThrottlingIsActive() const { return false; } |
| |
| virtual void updatePreferences(const WebPreferencesStore&) { } |
| virtual void enablePainting() { } |
| virtual void mainFrameContentSizeChanged(const WebCore::IntSize&) { } |
| |
| #if PLATFORM(COCOA) |
| virtual void setViewExposedRect(Optional<WebCore::FloatRect>) = 0; |
| virtual Optional<WebCore::FloatRect> viewExposedRect() const = 0; |
| |
| virtual void acceleratedAnimationDidStart(uint64_t /*layerID*/, const String& /*key*/, MonotonicTime /*startTime*/) { } |
| virtual void acceleratedAnimationDidEnd(uint64_t /*layerID*/, const String& /*key*/) { } |
| virtual void addFence(const WTF::MachSendRight&) { } |
| #endif |
| #if PLATFORM(IOS_FAMILY) |
| virtual WebCore::FloatRect exposedContentRect() const = 0; |
| virtual void setExposedContentRect(const WebCore::FloatRect&) = 0; |
| #endif |
| virtual void mainFrameScrollabilityChanged(bool) { } |
| |
| virtual bool supportsAsyncScrolling() { return false; } |
| |
| virtual bool shouldUseTiledBackingForFrameView(const WebCore::FrameView&) { return false; } |
| |
| virtual WebCore::GraphicsLayerFactory* graphicsLayerFactory() { return nullptr; } |
| virtual void setRootCompositingLayer(WebCore::GraphicsLayer*) = 0; |
| virtual void scheduleCompositingLayerFlush() = 0; |
| virtual void scheduleInitialDeferredPaint() = 0; |
| virtual void scheduleCompositingLayerFlushImmediately() = 0; |
| |
| #if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) |
| virtual RefPtr<WebCore::DisplayRefreshMonitor> createDisplayRefreshMonitor(WebCore::PlatformDisplayID); |
| #endif |
| |
| virtual void dispatchAfterEnsuringUpdatedScrollPosition(WTF::Function<void ()>&&); |
| |
| virtual void activityStateDidChange(OptionSet<WebCore::ActivityState::Flag>, ActivityStateChangeID, const Vector<CallbackID>&) { } |
| virtual void setLayerHostingMode(LayerHostingMode) { } |
| |
| virtual bool markLayersVolatileImmediatelyIfPossible() { return true; } |
| |
| virtual bool adjustLayerFlushThrottling(WebCore::LayerFlushThrottleState::Flags) { return false; } |
| |
| virtual void attachViewOverlayGraphicsLayer(WebCore::GraphicsLayer*) { } |
| |
| virtual void setShouldScaleViewToFitDocument(bool) { } |
| |
| virtual bool addMilestonesToDispatch(OptionSet<WebCore::LayoutMilestone>) { return false; } |
| |
| #if PLATFORM(COCOA) |
| // Used by TiledCoreAnimationDrawingArea. |
| virtual void updateGeometry(const WebCore::IntSize& viewSize, bool flushSynchronously, const WTF::MachSendRight& fencePort) { } |
| #endif |
| |
| virtual void layerHostDidFlushLayers() { } |
| |
| #if USE(COORDINATED_GRAPHICS) || USE(TEXTURE_MAPPER) |
| virtual void didChangeViewportAttributes(WebCore::ViewportAttributes&&) = 0; |
| virtual void deviceOrPageScaleFactorChanged() = 0; |
| #endif |
| |
| virtual void adoptLayersFromDrawingArea(DrawingArea&) { } |
| virtual void adoptDisplayRefreshMonitorsFromDrawingArea(DrawingArea&) { } |
| |
| void removeMessageReceiverIfNeeded(); |
| |
| protected: |
| DrawingArea(DrawingAreaType, DrawingAreaIdentifier, WebPage&); |
| |
| template<typename U> bool send(const U& message) |
| { |
| return m_webPage.send(message, m_identifier.toUInt64(), { }); |
| } |
| |
| DrawingAreaType m_type; |
| DrawingAreaIdentifier m_identifier; |
| WebPage& m_webPage; |
| |
| private: |
| // IPC::MessageReceiver. |
| void didReceiveMessage(IPC::Connection&, IPC::Decoder&) override; |
| |
| // Message handlers. |
| // FIXME: These should be pure virtual. |
| virtual void updateBackingStoreState(uint64_t /*backingStoreStateID*/, bool /*respondImmediately*/, float /*deviceScaleFactor*/, const WebCore::IntSize& /*size*/, |
| const WebCore::IntSize& /*scrollOffset*/) { } |
| virtual void didUpdate() { } |
| |
| #if PLATFORM(COCOA) |
| // Used by TiledCoreAnimationDrawingArea. |
| virtual void setDeviceScaleFactor(float) { } |
| virtual void setColorSpace(const ColorSpaceData&) { } |
| |
| virtual void adjustTransientZoom(double scale, WebCore::FloatPoint origin) { } |
| virtual void commitTransientZoom(double scale, WebCore::FloatPoint origin) { } |
| |
| virtual void addTransactionCallbackID(WebKit::CallbackID) { ASSERT_NOT_REACHED(); } |
| #endif |
| |
| bool m_hasRemovedMessageReceiver { false }; |
| }; |
| |
| } // namespace WebKit |
| |
| #define SPECIALIZE_TYPE_TRAITS_DRAWING_AREA(ToValueTypeName, AreaType) \ |
| SPECIALIZE_TYPE_TRAITS_BEGIN(WebKit::ToValueTypeName) \ |
| static bool isType(const WebKit::DrawingArea& area) { return area.type() == WebKit::AreaType; } \ |
| SPECIALIZE_TYPE_TRAITS_END() |