1/*
2 * Copyright (C) 2006 Apple Computer, Inc.
3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@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
29namespace WebCore {
30
31class RenderSVGInlineText;
32class SVGTextElement;
33class RenderSVGInlineText;
34
35class RenderSVGText FINAL : public RenderSVGBlock {
36public:
37    explicit RenderSVGText(SVGTextElement*);
38    virtual ~RenderSVGText();
39
40    virtual bool isChildAllowed(RenderObject*, RenderStyle*) const OVERRIDE;
41
42    void setNeedsPositioningValuesUpdate() { m_needsPositioningValuesUpdate = true; }
43    virtual void setNeedsTransformUpdate() OVERRIDE { m_needsTransformUpdate = true; }
44    void setNeedsTextMetricsUpdate() { m_needsTextMetricsUpdate = true; }
45    virtual FloatRect paintInvalidationRectInLocalCoordinates() const OVERRIDE;
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();
57    void subtreeTextDidChange(RenderSVGInlineText*);
58
59private:
60    virtual const char* renderName() const OVERRIDE { return "RenderSVGText"; }
61    virtual bool isSVGText() const OVERRIDE { return true; }
62
63    virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE;
64    virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction) OVERRIDE;
65    virtual PositionWithAffinity positionForPoint(const LayoutPoint&) OVERRIDE;
66
67    virtual void layout() OVERRIDE;
68
69    virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const OVERRIDE;
70
71    virtual void mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect&, bool fixed = false) const OVERRIDE;
72
73    virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0) OVERRIDE;
74    virtual void removeChild(RenderObject*) OVERRIDE;
75    virtual void willBeDestroyed() OVERRIDE;
76
77    virtual FloatRect objectBoundingBox() const OVERRIDE { return frameRect(); }
78    virtual FloatRect strokeBoundingBox() const OVERRIDE;
79
80    virtual const AffineTransform& localToParentTransform() const OVERRIDE { return m_localTransform; }
81    virtual RootInlineBox* createRootInlineBox() OVERRIDE;
82
83    virtual RenderBlock* firstLineBlock() const OVERRIDE;
84    virtual void updateFirstLetter() OVERRIDE;
85
86    bool shouldHandleSubtreeMutations() const;
87
88    bool m_needsReordering : 1;
89    bool m_needsPositioningValuesUpdate : 1;
90    bool m_needsTransformUpdate : 1;
91    bool m_needsTextMetricsUpdate : 1;
92    SVGTextLayoutAttributesBuilder m_layoutAttributesBuilder;
93    Vector<SVGTextLayoutAttributes*> m_layoutAttributes;
94};
95
96DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGText, isSVGText());
97
98}
99
100#endif
101