112 lines
4.7 KiB
C++
112 lines
4.7 KiB
C++
/**
|
|
* Copyright (C) 2007 Rob Buis <buis@kde.org>
|
|
* Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
|
|
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
|
|
* Copyright (C) 2009 Google, Inc. All rights reserved.
|
|
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public License
|
|
* along with this library; see the file COPYING.LIB. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "PaintInfo.h"
|
|
#include "RenderObject.h"
|
|
|
|
namespace WebCore {
|
|
|
|
class FloatPoint;
|
|
class FloatRect;
|
|
class ImageBuffer;
|
|
class LayoutRect;
|
|
class RenderBoxModelObject;
|
|
class RenderElement;
|
|
class RenderGeometryMap;
|
|
class RenderLayerModelObject;
|
|
class RenderStyle;
|
|
class RenderSVGRoot;
|
|
class TransformState;
|
|
|
|
// SVGRendererSupport is a helper class sharing code between all SVG renderers.
|
|
class SVGRenderSupport {
|
|
public:
|
|
static void layoutDifferentRootIfNeeded(const RenderElement&);
|
|
|
|
// Shares child layouting code between RenderSVGRoot/RenderSVG(Hidden)Container
|
|
static void layoutChildren(RenderElement&, bool selfNeedsLayout);
|
|
|
|
// Helper function determining wheter overflow is hidden
|
|
static bool isOverflowHidden(const RenderElement&);
|
|
|
|
// Calculates the repaintRect in combination with filter, clipper and masker in local coordinates.
|
|
static void intersectRepaintRectWithResources(const RenderElement&, FloatRect&);
|
|
|
|
// Determines whether a container needs to be laid out because it's filtered and a child is being laid out.
|
|
static bool filtersForceContainerLayout(const RenderElement&);
|
|
|
|
// Determines whether the passed point lies in a clipping area
|
|
static bool pointInClippingArea(const RenderElement&, const FloatPoint&);
|
|
|
|
static void computeContainerBoundingBoxes(const RenderElement& container, FloatRect& objectBoundingBox, bool& objectBoundingBoxValid, FloatRect& strokeBoundingBox, FloatRect& repaintBoundingBox);
|
|
static bool paintInfoIntersectsRepaintRect(const FloatRect& localRepaintRect, const AffineTransform& localTransform, const PaintInfo&);
|
|
|
|
// Important functions used by nearly all SVG renderers centralizing coordinate transformations / repaint rect calculations
|
|
static LayoutRect clippedOverflowRectForRepaint(const RenderElement&, const RenderLayerModelObject* container);
|
|
static std::optional<FloatRect> computeFloatVisibleRectInContainer(const RenderElement&, const FloatRect&, const RenderLayerModelObject* container, RenderObject::VisibleRectContext);
|
|
static const RenderElement& localToParentTransform(const RenderElement&, AffineTransform &);
|
|
static void mapLocalToContainer(const RenderElement&, const RenderLayerModelObject* ancestorContainer, TransformState&, bool* wasFixed);
|
|
static const RenderElement* pushMappingToContainer(const RenderElement&, const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&);
|
|
static bool checkForSVGRepaintDuringLayout(const RenderElement&);
|
|
|
|
// Shared between SVG renderers and resources.
|
|
static void applyStrokeStyleToContext(GraphicsContext&, const RenderStyle&, const RenderElement&);
|
|
|
|
// Determines if any ancestor's transform has changed.
|
|
static bool transformToRootChanged(RenderElement*);
|
|
|
|
static void clipContextToCSSClippingArea(GraphicsContext&, const RenderElement& renderer);
|
|
|
|
static void styleChanged(RenderElement&, const RenderStyle*);
|
|
|
|
#if ENABLE(CSS_COMPOSITING)
|
|
static bool isolatesBlending(const RenderStyle&);
|
|
static void updateMaskedAncestorShouldIsolateBlending(const RenderElement&);
|
|
#endif
|
|
|
|
static RenderSVGRoot* findTreeRootObject(RenderElement&);
|
|
static const RenderSVGRoot* findTreeRootObject(const RenderElement&);
|
|
|
|
private:
|
|
// This class is not constructable.
|
|
SVGRenderSupport();
|
|
~SVGRenderSupport();
|
|
};
|
|
|
|
class SVGHitTestCycleDetectionScope {
|
|
WTF_MAKE_NONCOPYABLE(SVGHitTestCycleDetectionScope);
|
|
public:
|
|
explicit SVGHitTestCycleDetectionScope(const RenderElement&);
|
|
~SVGHitTestCycleDetectionScope();
|
|
static bool isEmpty();
|
|
static bool isVisiting(const RenderElement&);
|
|
|
|
private:
|
|
static WeakHashSet<RenderElement>& visitedElements();
|
|
WeakPtr<RenderElement> m_element;
|
|
};
|
|
|
|
} // namespace WebCore
|