1 /* 2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org> 3 * Copyright (C) 2004, 2005, 2007 Rob Buis <buis (at) kde.org> 4 * Copyright (C) 2009 Google, Inc. All rights reserved. 5 * Copyright (C) 2009 Apple Inc. All rights reserved. 6 * 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. 11 * 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. 16 * 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. 21 */ 22 23 #ifndef RenderSVGRoot_h 24 #define RenderSVGRoot_h 25 26 #include "core/rendering/RenderReplaced.h" 27 #include "core/rendering/svg/SVGRenderSupport.h" 28 #include "platform/geometry/FloatRect.h" 29 30 namespace WebCore { 31 32 class AffineTransform; 33 class SVGElement; 34 35 class RenderSVGRoot FINAL : public RenderReplaced { 36 public: 37 explicit RenderSVGRoot(SVGElement*); 38 virtual ~RenderSVGRoot(); 39 40 bool isEmbeddedThroughSVGImage() const; 41 bool isEmbeddedThroughFrameContainingSVGDocument() const; 42 43 virtual void computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio, bool& isPercentageIntrinsicSize) const; 44 45 RenderObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); } 46 RenderObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); } 47 48 const RenderObjectChildList* children() const { return &m_children; } 49 RenderObjectChildList* children() { return &m_children; } 50 51 bool isLayoutSizeChanged() const { return m_isLayoutSizeChanged; } 52 virtual void setNeedsBoundariesUpdate() { m_needsBoundariesOrTransformUpdate = true; } 53 virtual bool needsBoundariesUpdate() OVERRIDE { return m_needsBoundariesOrTransformUpdate; } 54 virtual void setNeedsTransformUpdate() { m_needsBoundariesOrTransformUpdate = true; } 55 56 IntSize containerSize() const { return m_containerSize; } 57 void setContainerSize(const IntSize& containerSize) { m_containerSize = containerSize; } 58 59 virtual bool hasRelativeDimensions() const OVERRIDE; 60 virtual bool hasRelativeIntrinsicLogicalWidth() const OVERRIDE; 61 virtual bool hasRelativeLogicalHeight() const OVERRIDE; 62 63 // localToBorderBoxTransform maps local SVG viewport coordinates to local CSS box coordinates. 64 const AffineTransform& localToBorderBoxTransform() const { return m_localToBorderBoxTransform; } 65 66 private: 67 virtual RenderObjectChildList* virtualChildren() { return children(); } 68 virtual const RenderObjectChildList* virtualChildren() const { return children(); } 69 70 virtual bool isSVGRoot() const { return true; } 71 virtual const char* renderName() const { return "RenderSVGRoot"; } 72 73 virtual LayoutUnit computeReplacedLogicalWidth(ShouldComputePreferred = ComputeActual) const OVERRIDE; 74 virtual LayoutUnit computeReplacedLogicalHeight() const; 75 virtual void layout(); 76 virtual void paintReplaced(PaintInfo&, const LayoutPoint&); 77 78 virtual void willBeDestroyed(); 79 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); 80 virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0) OVERRIDE; 81 virtual void removeChild(RenderObject*) OVERRIDE; 82 83 virtual void insertedIntoTree() OVERRIDE; 84 virtual void willBeRemovedFromTree() OVERRIDE; 85 86 virtual const AffineTransform& localToParentTransform() const; 87 88 virtual FloatRect objectBoundingBox() const { return m_objectBoundingBox; } 89 virtual FloatRect strokeBoundingBox() const { return m_strokeBoundingBox; } 90 virtual FloatRect repaintRectInLocalCoordinates() const { return m_repaintBoundingBox; } 91 92 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE; 93 94 virtual LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const OVERRIDE; 95 virtual void computeFloatRectForRepaint(const RenderLayerModelObject* repaintContainer, FloatRect& repaintRect, bool fixed) const OVERRIDE; 96 97 virtual void mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0) const OVERRIDE; 98 virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const OVERRIDE; 99 100 virtual bool canBeSelectionLeaf() const { return false; } 101 virtual bool canHaveChildren() const { return true; } 102 103 void updateCachedBoundaries(); 104 void buildLocalToBorderBoxTransform(); 105 106 RenderObjectChildList m_children; 107 IntSize m_containerSize; 108 FloatRect m_objectBoundingBox; 109 bool m_objectBoundingBoxValid; 110 FloatRect m_strokeBoundingBox; 111 FloatRect m_repaintBoundingBox; 112 mutable AffineTransform m_localToParentTransform; 113 AffineTransform m_localToBorderBoxTransform; 114 bool m_isLayoutSizeChanged : 1; 115 bool m_needsBoundariesOrTransformUpdate : 1; 116 }; 117 118 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGRoot, isSVGRoot()); 119 120 } // namespace WebCore 121 122 #endif // RenderSVGRoot_h 123
