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      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 RenderSVGContainer_h
     24 #define RenderSVGContainer_h
     25 
     26 #include "core/rendering/svg/RenderSVGModelObject.h"
     27 
     28 namespace WebCore {
     29 
     30 class SVGElement;
     31 
     32 class RenderSVGContainer : public RenderSVGModelObject {
     33 public:
     34     explicit RenderSVGContainer(SVGElement*);
     35     virtual ~RenderSVGContainer();
     36 
     37     RenderObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); }
     38     RenderObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); }
     39 
     40     // If you have a RenderSVGContainer, use firstChild or lastChild instead.
     41     void slowFirstChild() const WTF_DELETED_FUNCTION;
     42     void slowLastChild() const WTF_DELETED_FUNCTION;
     43 
     44     const RenderObjectChildList* children() const { return &m_children; }
     45     RenderObjectChildList* children() { return &m_children; }
     46 
     47     virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE;
     48     virtual void setNeedsBoundariesUpdate() OVERRIDE FINAL { m_needsBoundariesUpdate = true; }
     49     virtual bool didTransformToRootUpdate() { return false; }
     50     bool isObjectBoundingBoxValid() const { return m_objectBoundingBoxValid; }
     51 
     52 protected:
     53     virtual RenderObjectChildList* virtualChildren() OVERRIDE FINAL { return children(); }
     54     virtual const RenderObjectChildList* virtualChildren() const OVERRIDE FINAL { return children(); }
     55 
     56     virtual bool isSVGContainer() const OVERRIDE FINAL { return true; }
     57     virtual const char* renderName() const OVERRIDE { return "RenderSVGContainer"; }
     58 
     59     virtual void layout() OVERRIDE;
     60 
     61     virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0) OVERRIDE FINAL;
     62     virtual void removeChild(RenderObject*) OVERRIDE FINAL;
     63     virtual void addFocusRingRects(Vector<IntRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer = 0) OVERRIDE FINAL;
     64 
     65     virtual FloatRect objectBoundingBox() const OVERRIDE FINAL { return m_objectBoundingBox; }
     66     virtual FloatRect strokeBoundingBox() const OVERRIDE FINAL { return m_strokeBoundingBox; }
     67     virtual FloatRect paintInvalidationRectInLocalCoordinates() const OVERRIDE FINAL { return m_repaintBoundingBox; }
     68 
     69     virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction) OVERRIDE;
     70 
     71     // Allow RenderSVGTransformableContainer to hook in at the right time in layout()
     72     virtual bool calculateLocalTransform() { return false; }
     73 
     74     // Allow RenderSVGViewportContainer to hook in at the right times in layout(), paint() and nodeAtFloatPoint()
     75     virtual void calcViewport() { }
     76     virtual void applyViewportClip(PaintInfo&) { }
     77     virtual bool pointIsInsideViewportClip(const FloatPoint& /*pointInParent*/) { return true; }
     78 
     79     virtual void determineIfLayoutSizeChanged() { }
     80 
     81     bool selfWillPaint();
     82     void updateCachedBoundaries();
     83 
     84 private:
     85     RenderObjectChildList m_children;
     86     FloatRect m_objectBoundingBox;
     87     bool m_objectBoundingBoxValid;
     88     FloatRect m_strokeBoundingBox;
     89     FloatRect m_repaintBoundingBox;
     90     bool m_needsBoundariesUpdate : 1;
     91 };
     92 
     93 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGContainer, isSVGContainer());
     94 
     95 } // namespace WebCore
     96 
     97 #endif // RenderSVGContainer_h
     98