1/*
2 * Copyright (C) 2007 Rob Buis <buis@kde.org>
3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
4 * Copyright (C) Research In Motion Limited 2010. 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 "InlineTextBox.h"
25#include "RenderSVGInlineText.h"
26#include "RenderSVGResource.h"
27
28namespace WebCore {
29
30class RenderSVGResource;
31class SVGRootInlineBox;
32struct SVGTextFragment;
33
34class SVGInlineTextBox final : public InlineTextBox {
35 WTF_MAKE_ISO_ALLOCATED(SVGInlineTextBox);
36public:
37 explicit SVGInlineTextBox(RenderSVGInlineText&);
38
39 RenderSVGInlineText& renderer() const { return downcast<RenderSVGInlineText>(InlineTextBox::renderer()); }
40
41 float virtualLogicalHeight() const override { return m_logicalHeight; }
42 void setLogicalHeight(float height) { m_logicalHeight = height; }
43
44 int selectionTop() { return top(); }
45 int selectionHeight() { return static_cast<int>(ceilf(m_logicalHeight)); }
46 int offsetForPosition(float x, bool includePartialGlyphs = true) const override;
47 float positionForOffset(unsigned offset) const override;
48
49 void paintSelectionBackground(PaintInfo&);
50 void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) override;
51 LayoutRect localSelectionRect(unsigned startPosition, unsigned endPosition) const override;
52
53 bool mapStartEndPositionsIntoFragmentCoordinates(const SVGTextFragment&, unsigned& startPosition, unsigned& endPosition) const;
54
55 FloatRect calculateBoundaries() const override;
56
57 void clearTextFragments() { m_textFragments.clear(); }
58 Vector<SVGTextFragment>& textFragments() { return m_textFragments; }
59 const Vector<SVGTextFragment>& textFragments() const { return m_textFragments; }
60
61 void dirtyOwnLineBoxes() override;
62 void dirtyLineBoxes() override;
63
64 bool startsNewTextChunk() const { return m_startsNewTextChunk; }
65 void setStartsNewTextChunk(bool newTextChunk) { m_startsNewTextChunk = newTextChunk; }
66
67 int offsetForPositionInFragment(const SVGTextFragment&, float position, bool includePartialGlyphs) const;
68 FloatRect selectionRectForTextFragment(const SVGTextFragment&, unsigned fragmentStartPosition, unsigned fragmentEndPosition, const RenderStyle&) const;
69
70 OptionSet<RenderSVGResourceMode> paintingResourceMode() const { return OptionSet<RenderSVGResourceMode>::fromRaw(m_paintingResourceMode); }
71 void setPaintingResourceMode(OptionSet<RenderSVGResourceMode> mode) { m_paintingResourceMode = mode.toRaw(); }
72
73private:
74 bool isSVGInlineTextBox() const override { return true; }
75
76 TextRun constructTextRun(const RenderStyle&, const SVGTextFragment&) const;
77
78 bool acquirePaintingResource(GraphicsContext*&, float scalingFactor, RenderBoxModelObject&, const RenderStyle&);
79 void releasePaintingResource(GraphicsContext*&, const Path*);
80
81 bool prepareGraphicsContextForTextPainting(GraphicsContext*&, float scalingFactor, const RenderStyle&);
82 void restoreGraphicsContextAfterTextPainting(GraphicsContext*&);
83
84 void paintDecoration(GraphicsContext&, OptionSet<TextDecoration>, const SVGTextFragment&);
85 void paintDecorationWithStyle(GraphicsContext&, OptionSet<TextDecoration>, const SVGTextFragment&, RenderBoxModelObject& decorationRenderer);
86 void paintTextWithShadows(GraphicsContext&, const RenderStyle&, TextRun&, const SVGTextFragment&, unsigned startPosition, unsigned endPosition);
87 void paintText(GraphicsContext&, const RenderStyle&, const RenderStyle& selectionStyle, const SVGTextFragment&, bool hasSelection, bool paintSelectedTextOnly);
88
89 bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom, HitTestAction) override;
90
91private:
92 float m_logicalHeight { 0 };
93 unsigned m_paintingResourceMode : 4; // RenderSVGResourceMode
94 unsigned m_startsNewTextChunk : 1;
95 RenderSVGResource* m_paintingResource { nullptr };
96 Vector<SVGTextFragment> m_textFragments;
97};
98
99} // namespace WebCore
100
101SPECIALIZE_TYPE_TRAITS_INLINE_BOX(SVGInlineTextBox, isSVGInlineTextBox())
102