Home | History | Annotate | Download | only in svg 
      1 /*
      2  * Copyright (C) 2006 Apple Computer, Inc.
      3  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      4  * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  */
     21 
     22 #ifndef RenderSVGText_h
     23 #define RenderSVGText_h
     24 
     25 #include "core/rendering/svg/RenderSVGBlock.h"
     26 #include "core/rendering/svg/SVGTextLayoutAttributesBuilder.h"
     27 #include "platform/transforms/AffineTransform.h"
     28 
     29 namespace WebCore {
     30 
     31 class RenderSVGInlineText;
     32 class SVGTextElement;
     33 class RenderSVGInlineText;
     34 
     35 class RenderSVGText FINAL : public RenderSVGBlock {
     36 public:
     37     explicit RenderSVGText(SVGTextElement*);
     38     virtual ~RenderSVGText();
     39 
     40     virtual bool isChildAllowed(RenderObject*, RenderStyle*) const;
     41 
     42     void setNeedsPositioningValuesUpdate() { m_needsPositioningValuesUpdate = true; }
     43     virtual void setNeedsTransformUpdate() { m_needsTransformUpdate = true; }
     44     void setNeedsTextMetricsUpdate() { m_needsTextMetricsUpdate = true; }
     45     virtual FloatRect repaintRectInLocalCoordinates() const;
     46 
     47     static RenderSVGText* locateRenderSVGTextAncestor(RenderObject*);
     48     static const RenderSVGText* locateRenderSVGTextAncestor(const RenderObject*);
     49 
     50     bool needsReordering() const { return m_needsReordering; }
     51     Vector<SVGTextLayoutAttributes*>& layoutAttributes() { return m_layoutAttributes; }
     52 
     53     void subtreeChildWasAdded(RenderObject*);
     54     void subtreeChildWillBeRemoved(RenderObject*, Vector<SVGTextLayoutAttributes*, 2>& affectedAttributes);
     55     void subtreeChildWasRemoved(const Vector<SVGTextLayoutAttributes*, 2>& affectedAttributes);
     56     void subtreeStyleDidChange(RenderSVGInlineText*);
     57     void subtreeTextDidChange(RenderSVGInlineText*);
     58 
     59 private:
     60     virtual const char* renderName() const { return "RenderSVGText"; }
     61     virtual bool isSVGText() const { return true; }
     62 
     63     virtual void paint(PaintInfo&, const LayoutPoint&);
     64     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE;
     65     virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction);
     66     virtual PositionWithAffinity positionForPoint(const LayoutPoint&) OVERRIDE FINAL;
     67 
     68     virtual bool requiresLayer() const { return false; }
     69     virtual void layout();
     70 
     71     virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const;
     72 
     73     virtual LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const OVERRIDE;
     74     virtual void computeRectForRepaint(const RenderLayerModelObject* repaintContainer, LayoutRect&, bool fixed = false) const OVERRIDE;
     75     virtual void computeFloatRectForRepaint(const RenderLayerModelObject* repaintContainer, FloatRect&, bool fixed = false) const OVERRIDE;
     76 
     77     virtual void mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0) const OVERRIDE;
     78     virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const OVERRIDE;
     79     virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0);
     80     virtual void removeChild(RenderObject*) OVERRIDE;
     81     virtual void willBeDestroyed() OVERRIDE;
     82 
     83     virtual FloatRect objectBoundingBox() const { return frameRect(); }
     84     virtual FloatRect strokeBoundingBox() const;
     85 
     86     virtual const AffineTransform& localToParentTransform() const { return m_localTransform; }
     87     virtual AffineTransform localTransform() const { return m_localTransform; }
     88     virtual RootInlineBox* createRootInlineBox();
     89 
     90     virtual RenderBlock* firstLineBlock() const;
     91     virtual void updateFirstLetter();
     92 
     93     bool shouldHandleSubtreeMutations() const;
     94 
     95     bool m_needsReordering : 1;
     96     bool m_needsPositioningValuesUpdate : 1;
     97     bool m_needsTransformUpdate : 1;
     98     bool m_needsTextMetricsUpdate : 1;
     99     AffineTransform m_localTransform;
    100     SVGTextLayoutAttributesBuilder m_layoutAttributesBuilder;
    101     Vector<SVGTextLayoutAttributes*> m_layoutAttributes;
    102 };
    103 
    104 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGText, isSVGText());
    105 
    106 }
    107 
    108 #endif
    109