1/*
2 * Copyright (C) 2006 Apple 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 "AffineTransform.h"
26#include "RenderSVGBlock.h"
27#include "SVGTextLayoutAttributesBuilder.h"
28
29namespace WebCore {
30
31class RenderSVGInlineText;
32class SVGTextElement;
33class RenderSVGInlineText;
34
35class RenderSVGText final : public RenderSVGBlock {
36public:
37    RenderSVGText(SVGTextElement&, PassRef<RenderStyle>);
38    virtual ~RenderSVGText();
39
40    SVGTextElement& textElement() const;
41
42    virtual bool isChildAllowed(const RenderObject&, const RenderStyle&) const;
43
44    void setNeedsPositioningValuesUpdate() { m_needsPositioningValuesUpdate = true; }
45    virtual void setNeedsTransformUpdate() { m_needsTransformUpdate = true; }
46    void setNeedsTextMetricsUpdate() { m_needsTextMetricsUpdate = true; }
47    virtual FloatRect repaintRectInLocalCoordinates() const;
48
49    static RenderSVGText* locateRenderSVGTextAncestor(RenderObject&);
50    static const RenderSVGText* locateRenderSVGTextAncestor(const RenderObject&);
51
52    bool needsReordering() const { return m_needsReordering; }
53    Vector<SVGTextLayoutAttributes*>& layoutAttributes() { return m_layoutAttributes; }
54
55    void subtreeChildWasAdded(RenderObject*);
56    void subtreeChildWillBeRemoved(RenderObject*, Vector<SVGTextLayoutAttributes*, 2>& affectedAttributes);
57    void subtreeChildWasRemoved(const Vector<SVGTextLayoutAttributes*, 2>& affectedAttributes);
58    void subtreeStyleDidChange(RenderSVGInlineText*);
59    void subtreeTextDidChange(RenderSVGInlineText*);
60
61    virtual FloatRect objectBoundingBox() const override { return frameRect(); }
62    virtual FloatRect strokeBoundingBox() const override;
63
64private:
65    void graphicsElement() const = delete;
66
67    virtual const char* renderName() const { return "RenderSVGText"; }
68    virtual bool isSVGText() const { return true; }
69
70    virtual void paint(PaintInfo&, const LayoutPoint&);
71    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
72    virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction);
73    virtual VisiblePosition positionForPoint(const LayoutPoint&, const RenderRegion*);
74
75    virtual bool requiresLayer() const { return false; }
76    virtual void layout();
77
78    virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const;
79
80    virtual LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const override;
81    virtual void computeRectForRepaint(const RenderLayerModelObject* repaintContainer, LayoutRect&, bool fixed = false) const override;
82    virtual void computeFloatRectForRepaint(const RenderLayerModelObject* repaintContainer, FloatRect&, bool fixed = false) const override;
83
84    virtual void mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0) const override;
85    virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const override;
86    virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0);
87    virtual RenderObject* removeChild(RenderObject&) override;
88    virtual void willBeDestroyed() override;
89
90    virtual const AffineTransform& localToParentTransform() const { return m_localTransform; }
91    virtual AffineTransform localTransform() const { return m_localTransform; }
92    virtual std::unique_ptr<RootInlineBox> createRootInlineBox() override;
93
94    virtual RenderBlock* firstLineBlock() const;
95    virtual void updateFirstLetter();
96
97    bool shouldHandleSubtreeMutations() const;
98
99    bool m_needsReordering : 1;
100    bool m_needsPositioningValuesUpdate : 1;
101    bool m_needsTransformUpdate : 1;
102    bool m_needsTextMetricsUpdate : 1;
103    AffineTransform m_localTransform;
104    SVGTextLayoutAttributesBuilder m_layoutAttributesBuilder;
105    Vector<SVGTextLayoutAttributes*> m_layoutAttributes;
106};
107
108RENDER_OBJECT_TYPE_CASTS(RenderSVGText, isSVGText())
109
110}
111
112#endif
113