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#pragma once
23
24#include "AffineTransform.h"
25#include "RenderSVGBlock.h"
26#include "SVGTextLayoutAttributesBuilder.h"
27
28namespace WebCore {
29
30class RenderSVGInlineText;
31class SVGTextElement;
32class RenderSVGInlineText;
33
34class RenderSVGText final : public RenderSVGBlock {
35 WTF_MAKE_ISO_ALLOCATED(RenderSVGText);
36public:
37 RenderSVGText(SVGTextElement&, RenderStyle&&);
38 virtual ~RenderSVGText();
39
40 SVGTextElement& textElement() const;
41
42 bool isChildAllowed(const RenderObject&, const RenderStyle&) const override;
43
44 void setNeedsPositioningValuesUpdate() { m_needsPositioningValuesUpdate = true; }
45 void setNeedsTransformUpdate() override { m_needsTransformUpdate = true; }
46 void setNeedsTextMetricsUpdate() { m_needsTextMetricsUpdate = true; }
47 FloatRect repaintRectInLocalCoordinates() const override;
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 FloatRect objectBoundingBox() const override { return frameRect(); }
62 FloatRect strokeBoundingBox() const override;
63
64private:
65 void graphicsElement() const = delete;
66
67 const char* renderName() const override { return "RenderSVGText"; }
68 bool isSVGText() const override { return true; }
69
70 void paint(PaintInfo&, const LayoutPoint&) override;
71 bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
72 bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction) override;
73 VisiblePosition positionForPoint(const LayoutPoint&, const RenderFragmentContainer*) override;
74
75 bool requiresLayer() const override { return false; }
76 void layout() override;
77
78 void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const override;
79
80 LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const override;
81 Optional<LayoutRect> computeVisibleRectInContainer(const LayoutRect&, const RenderLayerModelObject* container, VisibleRectContext) const override;
82 Optional<FloatRect> computeFloatVisibleRectInContainer(const FloatRect&, const RenderLayerModelObject* container, VisibleRectContext) const override;
83
84 void mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState&, MapCoordinatesFlags, bool* wasFixed) const override;
85 const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const override;
86 void willBeDestroyed() override;
87
88 const AffineTransform& localToParentTransform() const override { return m_localTransform; }
89 AffineTransform localTransform() const override { return m_localTransform; }
90 std::unique_ptr<RootInlineBox> createRootInlineBox() override;
91
92 RenderBlock* firstLineBlock() const override;
93
94 bool shouldHandleSubtreeMutations() const;
95
96 bool m_needsReordering : 1;
97 bool m_needsPositioningValuesUpdate : 1;
98 bool m_needsTransformUpdate : 1;
99 bool m_needsTextMetricsUpdate : 1;
100 AffineTransform m_localTransform;
101 SVGTextLayoutAttributesBuilder m_layoutAttributesBuilder;
102 Vector<SVGTextLayoutAttributes*> m_layoutAttributes;
103};
104
105} // namespace WebCore
106
107SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderSVGText, isSVGText())
108