1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/*
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include "SVGTextChunk.h"
#include <wtf/Vector.h>
namespace WebCore {
class SVGInlineTextBox;
struct SVGTextFragment;
// SVGTextChunkBuilder performs the third layout phase for SVG text.
//
// Phase one built the layout information from the SVG DOM stored in the RenderSVGInlineText objects (SVGTextLayoutAttributes).
// Phase two performed the actual per-character layout, computing the final positions for each character, stored in the SVGInlineTextBox objects (SVGTextFragment).
// Phase three performs all modifications that have to be applied to each individual text chunk (text-anchor & textLength).
class SVGTextChunkBuilder {
WTF_MAKE_NONCOPYABLE(SVGTextChunkBuilder);
public:
SVGTextChunkBuilder();
const Vector<SVGTextChunk>& textChunks() const { return m_textChunks; }
unsigned totalCharacters() const;
float totalLength() const;
float totalAnchorShift() const;
AffineTransform transformationForTextBox(SVGInlineTextBox*) const;
void buildTextChunks(const Vector<SVGInlineTextBox*>& lineLayoutBoxes);
void layoutTextChunks(const Vector<SVGInlineTextBox*>& lineLayoutBoxes);
private:
Vector<SVGTextChunk> m_textChunks;
HashMap<SVGInlineTextBox*, AffineTransform> m_textBoxTransformations;
};
} // namespace WebCore
|
