2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) 2009 Google, Inc. All rights reserved.
5 * Copyright (C) 2009 Apple Inc. All rights reserved.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
23 #ifndef RenderSVGRoot_h
24 #define RenderSVGRoot_h
26 #include "core/rendering/RenderReplaced.h"
27 #include "core/rendering/svg/SVGRenderSupport.h"
28 #include "platform/geometry/FloatRect.h"
32 class AffineTransform;
35 class RenderSVGRoot FINAL : public RenderReplaced {
37 explicit RenderSVGRoot(SVGElement*);
38 virtual ~RenderSVGRoot();
40 bool isEmbeddedThroughSVGImage() const;
41 bool isEmbeddedThroughFrameContainingSVGDocument() const;
43 virtual void computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio) const OVERRIDE;
45 RenderObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); }
46 RenderObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); }
48 const RenderObjectChildList* children() const { return &m_children; }
49 RenderObjectChildList* children() { return &m_children; }
51 bool isLayoutSizeChanged() const { return m_isLayoutSizeChanged; }
52 virtual void setNeedsBoundariesUpdate() OVERRIDE { m_needsBoundariesOrTransformUpdate = true; }
53 virtual void setNeedsTransformUpdate() OVERRIDE { m_needsBoundariesOrTransformUpdate = true; }
55 IntSize containerSize() const { return m_containerSize; }
56 void setContainerSize(const IntSize& containerSize)
58 // SVGImage::draw() does a view layout prior to painting,
59 // and we need that layout to know of the new size otherwise
60 // the rendering may be incorrectly using the old size.
61 if (m_containerSize != containerSize)
63 m_containerSize = containerSize;
66 // localToBorderBoxTransform maps local SVG viewport coordinates to local CSS box coordinates.
67 const AffineTransform& localToBorderBoxTransform() const { return m_localToBorderBoxTransform; }
70 virtual RenderObjectChildList* virtualChildren() OVERRIDE { return children(); }
71 virtual const RenderObjectChildList* virtualChildren() const OVERRIDE { return children(); }
73 virtual const char* renderName() const OVERRIDE { return "RenderSVGRoot"; }
74 virtual bool isSVGRoot() const OVERRIDE { return true; }
75 virtual bool isSVG() const OVERRIDE { return true; }
77 virtual LayoutUnit computeReplacedLogicalWidth(ShouldComputePreferred = ComputeActual) const OVERRIDE;
78 virtual LayoutUnit computeReplacedLogicalHeight() const OVERRIDE;
79 virtual void layout() OVERRIDE;
80 virtual void paintReplaced(PaintInfo&, const LayoutPoint&) OVERRIDE;
82 virtual void willBeDestroyed() OVERRIDE;
83 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
84 virtual bool isChildAllowed(RenderObject*, RenderStyle*) const OVERRIDE;
85 virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0) OVERRIDE;
86 virtual void removeChild(RenderObject*) OVERRIDE;
87 virtual bool canHaveWhitespaceChildren() const OVERRIDE { return false; }
89 virtual void insertedIntoTree() OVERRIDE;
90 virtual void willBeRemovedFromTree() OVERRIDE;
92 virtual const AffineTransform& localToParentTransform() const OVERRIDE;
94 virtual FloatRect objectBoundingBox() const OVERRIDE { return m_objectBoundingBox; }
95 virtual FloatRect strokeBoundingBox() const OVERRIDE { return m_strokeBoundingBox; }
96 virtual FloatRect repaintRectInLocalCoordinates() const OVERRIDE { return m_repaintBoundingBox; }
98 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE;
100 virtual LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const OVERRIDE;
101 virtual void computeFloatRectForRepaint(const RenderLayerModelObject* repaintContainer, FloatRect& repaintRect, bool fixed) const OVERRIDE;
103 virtual void mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0) const OVERRIDE;
104 virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const OVERRIDE;
106 virtual bool canBeSelectionLeaf() const OVERRIDE { return false; }
107 virtual bool canHaveChildren() const OVERRIDE { return true; }
109 bool shouldApplyViewportClip() const;
110 void updateCachedBoundaries();
111 void buildLocalToBorderBoxTransform();
113 RenderObjectChildList m_children;
114 IntSize m_containerSize;
115 FloatRect m_objectBoundingBox;
116 bool m_objectBoundingBoxValid;
117 FloatRect m_strokeBoundingBox;
118 FloatRect m_repaintBoundingBox;
119 mutable AffineTransform m_localToParentTransform;
120 AffineTransform m_localToBorderBoxTransform;
121 bool m_isLayoutSizeChanged : 1;
122 bool m_needsBoundariesOrTransformUpdate : 1;
123 bool m_hasBoxDecorations : 1;
126 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGRoot, isSVGRoot());
128 } // namespace WebCore
130 #endif // RenderSVGRoot_h