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1 /* | 1 /* |
2 * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved. | 2 * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved. |
3 * | 3 * |
4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
8 * | 8 * |
9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 * Library General Public License for more details. | 12 * Library General Public License for more details. |
13 * | 13 * |
14 * You should have received a copy of the GNU Library General Public License | 14 * You should have received a copy of the GNU Library General Public License |
15 * along with this library; see the file COPYING.LIB. If not, write to | 15 * along with this library; see the file COPYING.LIB. If not, write to |
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
17 * Boston, MA 02110-1301, USA. | 17 * Boston, MA 02110-1301, USA. |
18 */ | 18 */ |
19 | 19 |
20 #include "config.h" | 20 #include "config.h" |
21 | 21 |
22 #include "core/rendering/svg/SVGTextMetrics.h" | 22 #include "core/rendering/svg/SVGTextMetrics.h" |
23 | 23 |
24 #include "core/rendering/svg/RenderSVGInlineText.h" | 24 #include "core/rendering/svg/RenderSVGInlineText.h" |
25 #include "core/rendering/svg/SVGTextRunRenderingContext.h" | |
26 | 25 |
27 namespace blink { | 26 namespace blink { |
28 | 27 |
29 SVGTextMetrics::SVGTextMetrics() | 28 SVGTextMetrics::SVGTextMetrics() |
30 : m_width(0) | 29 : m_width(0) |
31 , m_height(0) | 30 , m_height(0) |
32 , m_length(0) | 31 , m_length(0) |
33 , m_glyph(0) | 32 , m_glyph(0) |
34 { | 33 { |
35 } | 34 } |
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79 , textDirection | 78 , textDirection |
80 , isOverride(style->unicodeBidi()) /* directionalOverride */); | 79 , isOverride(style->unicodeBidi()) /* directionalOverride */); |
81 | 80 |
82 if (length) { | 81 if (length) { |
83 if (text->is8Bit()) | 82 if (text->is8Bit()) |
84 run.setText(text->characters8() + position, length); | 83 run.setText(text->characters8() + position, length); |
85 else | 84 else |
86 run.setText(text->characters16() + position, length); | 85 run.setText(text->characters16() + position, length); |
87 } | 86 } |
88 | 87 |
89 if (textRunNeedsRenderingContext(style->font())) | |
90 run.setRenderingContext(SVGTextRunRenderingContext::create(text)); | |
91 | |
92 // We handle letter & word spacing ourselves. | 88 // We handle letter & word spacing ourselves. |
93 run.disableSpacing(); | 89 run.disableSpacing(); |
94 | 90 |
95 // Propagate the maximum length of the characters buffer to the TextRun, eve
n when we're only processing a substring. | 91 // Propagate the maximum length of the characters buffer to the TextRun, eve
n when we're only processing a substring. |
96 run.setCharactersLength(text->textLength() - position); | 92 run.setCharactersLength(text->textLength() - position); |
97 ASSERT(run.charactersLength() >= run.length()); | 93 ASSERT(run.charactersLength() >= run.length()); |
98 return run; | 94 return run; |
99 } | 95 } |
100 | 96 |
101 SVGTextMetrics SVGTextMetrics::measureCharacterRange(RenderSVGInlineText* text,
unsigned position, unsigned length, TextDirection textDirection) | 97 SVGTextMetrics SVGTextMetrics::measureCharacterRange(RenderSVGInlineText* text,
unsigned position, unsigned length, TextDirection textDirection) |
102 { | 98 { |
103 ASSERT(text); | 99 ASSERT(text); |
104 return SVGTextMetrics(text, constructTextRun(text, position, length, textDir
ection)); | 100 return SVGTextMetrics(text, constructTextRun(text, position, length, textDir
ection)); |
105 } | 101 } |
106 | 102 |
107 SVGTextMetrics SVGTextMetrics::measureCharacterRange(RenderSVGInlineText* text,
unsigned position, unsigned length) | 103 SVGTextMetrics SVGTextMetrics::measureCharacterRange(RenderSVGInlineText* text,
unsigned position, unsigned length) |
108 { | 104 { |
109 ASSERT(text); | 105 ASSERT(text); |
110 return SVGTextMetrics(text, constructTextRun(text, position, length)); | 106 return SVGTextMetrics(text, constructTextRun(text, position, length)); |
111 } | 107 } |
112 | 108 |
113 SVGTextMetrics::SVGTextMetrics(RenderSVGInlineText* text, unsigned position, uns
igned length, float width, Glyph glyphNameGlyphId) | 109 SVGTextMetrics::SVGTextMetrics(RenderSVGInlineText* text, unsigned position, uns
igned length, float width, Glyph glyphNameGlyphId) |
114 { | 110 { |
115 ASSERT(text); | 111 ASSERT(text); |
116 | 112 |
117 bool needsContext = textRunNeedsRenderingContext(text->style()->font()); | |
118 float scalingFactor = text->scalingFactor(); | 113 float scalingFactor = text->scalingFactor(); |
119 ASSERT(scalingFactor); | 114 ASSERT(scalingFactor); |
120 | 115 |
121 m_width = width / scalingFactor; | 116 m_width = width / scalingFactor; |
122 m_height = text->scaledFont().fontMetrics().floatHeight() / scalingFactor; | 117 m_height = text->scaledFont().fontMetrics().floatHeight() / scalingFactor; |
123 m_glyph = needsContext ? glyphNameGlyphId : 0; | 118 m_glyph = 0; |
124 | 119 |
125 m_length = length; | 120 m_length = length; |
126 } | 121 } |
127 | 122 |
128 } | 123 } |
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