Home | History | Annotate | Download | only in svg 
      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 #if ENABLE(SVG)
     27 #include "FloatRect.h"
     28 #include "RenderBox.h"
     29 
     30 #include "SVGRenderSupport.h"
     31 
     32 namespace WebCore {
     33 
     34 class SVGStyledElement;
     35 class AffineTransform;
     36 
     37 class RenderSVGRoot : public RenderBox {
     38 public:
     39     explicit RenderSVGRoot(SVGStyledElement*);
     40     virtual ~RenderSVGRoot();
     41 
     42     const RenderObjectChildList* children() const { return &m_children; }
     43     RenderObjectChildList* children() { return &m_children; }
     44 
     45     bool isLayoutSizeChanged() const { return m_isLayoutSizeChanged; }
     46     virtual void setNeedsBoundariesUpdate() { m_needsBoundariesOrTransformUpdate = true; }
     47     virtual void setNeedsTransformUpdate() { m_needsBoundariesOrTransformUpdate = true; }
     48 
     49 private:
     50     virtual RenderObjectChildList* virtualChildren() { return children(); }
     51     virtual const RenderObjectChildList* virtualChildren() const { return children(); }
     52 
     53     virtual bool isSVGRoot() const { return true; }
     54     virtual const char* renderName() const { return "RenderSVGRoot"; }
     55 
     56     virtual void computePreferredLogicalWidths();
     57     virtual int computeReplacedLogicalWidth(bool includeMaxWidth = true) const;
     58     virtual int computeReplacedLogicalHeight() const;
     59     virtual void layout();
     60     virtual void paint(PaintInfo&, int parentX, int parentY);
     61 
     62     virtual void destroy();
     63     virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle);
     64     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
     65     virtual void updateFromElement();
     66 
     67     virtual const AffineTransform& localToParentTransform() const;
     68 
     69     bool fillContains(const FloatPoint&) const;
     70     bool strokeContains(const FloatPoint&) const;
     71 
     72     virtual FloatRect objectBoundingBox() const { return m_objectBoundingBox; }
     73     virtual FloatRect strokeBoundingBox() const { return m_strokeBoundingBox; }
     74     virtual FloatRect repaintRectInLocalCoordinates() const { return m_repaintBoundingBox; }
     75 
     76     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction);
     77 
     78     virtual IntRect clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer);
     79     virtual void computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& repaintRect, bool fixed);
     80 
     81     virtual void mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool useTransforms, bool fixed, TransformState&) const;
     82 
     83     void calcViewport();
     84 
     85     bool selfWillPaint();
     86     void updateCachedBoundaries();
     87 
     88     IntSize parentOriginToBorderBox() const;
     89     IntSize borderOriginToContentBox() const;
     90     AffineTransform localToRepaintContainerTransform(const IntPoint& parentOriginInContainer) const;
     91     AffineTransform localToBorderBoxTransform() const;
     92 
     93     RenderObjectChildList m_children;
     94     FloatSize m_viewportSize;
     95     FloatRect m_objectBoundingBox;
     96     FloatRect m_strokeBoundingBox;
     97     FloatRect m_repaintBoundingBox;
     98     mutable AffineTransform m_localToParentTransform;
     99     bool m_isLayoutSizeChanged : 1;
    100     bool m_needsBoundariesOrTransformUpdate : 1;
    101 };
    102 
    103 inline RenderSVGRoot* toRenderSVGRoot(RenderObject* object)
    104 {
    105     ASSERT(!object || object->isSVGRoot());
    106     return static_cast<RenderSVGRoot*>(object);
    107 }
    108 
    109 inline const RenderSVGRoot* toRenderSVGRoot(const RenderObject* object)
    110 {
    111     ASSERT(!object || object->isSVGRoot());
    112     return static_cast<const RenderSVGRoot*>(object);
    113 }
    114 
    115 // This will catch anyone doing an unnecessary cast.
    116 void toRenderSVGRoot(const RenderSVGRoot*);
    117 
    118 } // namespace WebCore
    119 
    120 #endif // ENABLE(SVG)
    121 #endif // RenderSVGRoot_h
    122