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/*
* Copyright (C) 2009 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. ``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
* 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 "LayerTreeAsTextOptions.h"
#include "TiledBacking.h"
#include "TransformationMatrix.h"
#include <wtf/Forward.h>
#include <wtf/OptionSet.h>
namespace WebCore {
class FloatPoint;
class FloatRect;
class GraphicsContext;
class GraphicsLayer;
class IntPoint;
class IntRect;
enum class AnimatedProperty : uint8_t {
Invalid,
Translate,
Scale,
Rotate,
Transform,
Opacity,
BackgroundColor,
Filter,
WebkitBackdropFilter,
};
enum class GraphicsLayerPaintingPhase {
Background = 1 << 0,
Foreground = 1 << 1,
Mask = 1 << 2,
ClipPath = 1 << 3,
OverflowContents = 1 << 4,
CompositedScroll = 1 << 5,
ChildClippingMask = 1 << 6,
};
enum class PlatformLayerTreeAsTextFlags : uint8_t {
Debug = 1 << 0,
IgnoreChildren = 1 << 1,
IncludeModels = 1 << 2,
};
// See WebCore::PaintBehavior.
enum class GraphicsLayerPaintBehavior : uint8_t {
DefaultAsynchronousImageDecode = 1 << 0,
ForceSynchronousImageDecode = 1 << 1,
};
class GraphicsLayerClient {
public:
virtual ~GraphicsLayerClient() = default;
virtual void tiledBackingUsageChanged(const GraphicsLayer*, bool /*usingTiledBacking*/) { }
// Callback for when hardware-accelerated animation started.
virtual void notifyAnimationStarted(const GraphicsLayer*, const String& /*animationKey*/, MonotonicTime /*time*/) { }
virtual void notifyAnimationEnded(const GraphicsLayer*, const String& /*animationKey*/) { }
// Notification that a layer property changed that requires a subsequent call to flushCompositingState()
// to appear on the screen.
virtual void notifyFlushRequired(const GraphicsLayer*) { }
// Notification that this layer requires a flush on the next display refresh.
virtual void notifySubsequentFlushRequired(const GraphicsLayer*) { }
virtual void paintContents(const GraphicsLayer*, GraphicsContext&, const FloatRect& /* inClip */, OptionSet<GraphicsLayerPaintBehavior>) { }
virtual void didChangePlatformLayerForLayer(const GraphicsLayer*) { }
// Provides current transform (taking transform-origin and animations into account). Input matrix has been
// initialized to identity already. Returns false if the layer has no transform.
virtual bool getCurrentTransform(const GraphicsLayer*, TransformationMatrix&) const { return false; }
// Allows the client to modify a layer position used during the visibleRect calculation, for example to ignore
// scroll overhang.
virtual void customPositionForVisibleRectComputation(const GraphicsLayer*, FloatPoint&) const { }
// Multiplier for backing store size, related to high DPI.
virtual float deviceScaleFactor() const { return 1; }
// Page scale factor.
virtual float pageScaleFactor() const { return 1; }
virtual float zoomedOutPageScaleFactor() const { return 0; }
virtual std::optional<float> customContentsScale(const GraphicsLayer*) const { return { }; }
virtual float contentsScaleMultiplierForNewTiles(const GraphicsLayer*) const { return 1; }
virtual bool paintsOpaquelyAtNonIntegralScales(const GraphicsLayer*) const { return false; }
virtual bool isFlushingLayers() const { return false; }
virtual bool isTrackingRepaints() const { return false; }
virtual bool shouldSkipLayerInDump(const GraphicsLayer*, OptionSet<LayerTreeAsTextOptions>) const { return false; }
virtual bool shouldDumpPropertyForLayer(const GraphicsLayer*, ASCIILiteral, OptionSet<LayerTreeAsTextOptions>) const { return true; }
virtual bool shouldAggressivelyRetainTiles(const GraphicsLayer*) const { return false; }
virtual bool shouldTemporarilyRetainTileCohorts(const GraphicsLayer*) const { return true; }
virtual bool useGiantTiles() const { return false; }
virtual bool cssUnprefixedBackdropFilterEnabled() const { return false; }
virtual bool needsPixelAligment() const { return false; }
virtual bool needsIOSDumpRenderTreeMainFrameRenderViewLayerIsAlwaysOpaqueHack(const GraphicsLayer&) const { return false; }
virtual void dumpProperties(const GraphicsLayer*, TextStream&, OptionSet<LayerTreeAsTextOptions>) const { }
virtual void logFilledVisibleFreshTile(unsigned) { };
virtual TransformationMatrix transformMatrixForProperty(AnimatedProperty) const { return { }; }
#if ENABLE(RE_DYNAMIC_CONTENT_SCALING)
virtual bool layerAllowsDynamicContentScaling(const GraphicsLayer*) const { return true; }
#endif
virtual bool layerNeedsPlatformContext(const GraphicsLayer*) const { return false; }
virtual bool backdropRootIsOpaque(const GraphicsLayer*) const { return false; }
#ifndef NDEBUG
// RenderLayerBacking overrides this to verify that it is not
// currently painting contents. An ASSERT fails, if it is.
// This is executed in GraphicsLayer construction and destruction
// to verify that we don't create or destroy GraphicsLayers
// while painting.
virtual void verifyNotPainting() { }
#endif
};
} // namespace WebCore
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