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1 /* | 1 /* |
2 * Copyright (C) Research In Motion Limited 2010. All rights reserved. | 2 * Copyright (C) Research In Motion Limited 2010. 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/SVGTextLayoutEngineSpacing.h" | 22 #include "core/rendering/svg/SVGTextLayoutEngineSpacing.h" |
23 | 23 |
24 #include "core/rendering/style/SVGRenderStyle.h" | |
25 #include "core/svg/SVGLengthContext.h" | 24 #include "core/svg/SVGLengthContext.h" |
26 #include "platform/fonts/Character.h" | 25 #include "platform/fonts/Character.h" |
27 #include "platform/fonts/Font.h" | 26 #include "platform/fonts/Font.h" |
28 | 27 |
29 #if ENABLE(SVG_FONTS) | 28 #if ENABLE(SVG_FONTS) |
30 #include "core/svg/SVGFontData.h" | 29 #include "core/svg/SVGFontData.h" |
31 #include "core/svg/SVGFontElement.h" | 30 #include "core/svg/SVGFontElement.h" |
32 #include "core/svg/SVGFontFaceElement.h" | 31 #include "core/svg/SVGFontFaceElement.h" |
33 #endif | 32 #endif |
34 | 33 |
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76 kerning *= m_font.fontDescription().computedSize() / m_font.fontMetrics(
).unitsPerEm(); | 75 kerning *= m_font.fontDescription().computedSize() / m_font.fontMetrics(
).unitsPerEm(); |
77 } | 76 } |
78 | 77 |
79 m_lastGlyph = currentGlyph; | 78 m_lastGlyph = currentGlyph; |
80 return kerning; | 79 return kerning; |
81 #else | 80 #else |
82 return 0; | 81 return 0; |
83 #endif | 82 #endif |
84 } | 83 } |
85 | 84 |
86 float SVGTextLayoutEngineSpacing::calculateCSSKerningAndSpacing(const SVGRenderS
tyle* style, SVGElement* contextElement, UChar currentCharacter) | 85 float SVGTextLayoutEngineSpacing::calculateCSSSpacing(UChar currentCharacter) |
87 { | 86 { |
88 float kerning = 0; | |
89 RefPtr<SVGLength> kerningLength = style->kerning(); | |
90 if (kerningLength->unitType() == LengthTypePercentage) | |
91 kerning = kerningLength->valueAsPercentage() * m_font.fontDescription().
computedPixelSize(); | |
92 else { | |
93 SVGLengthContext lengthContext(contextElement); | |
94 kerning = kerningLength->value(lengthContext); | |
95 } | |
96 | |
97 UChar lastCharacter = m_lastCharacter; | 87 UChar lastCharacter = m_lastCharacter; |
98 m_lastCharacter = currentCharacter; | 88 m_lastCharacter = currentCharacter; |
99 | 89 |
100 if (!kerning && !m_font.fontDescription().letterSpacing() && !m_font.fontDes
cription().wordSpacing()) | 90 if (!m_font.fontDescription().letterSpacing() && !m_font.fontDescription().w
ordSpacing()) |
101 return 0; | 91 return 0; |
102 | 92 |
103 float spacing = m_font.fontDescription().letterSpacing() + kerning; | 93 float spacing = m_font.fontDescription().letterSpacing(); |
104 if (currentCharacter && lastCharacter && m_font.fontDescription().wordSpacin
g()) { | 94 if (currentCharacter && lastCharacter && m_font.fontDescription().wordSpacin
g()) { |
105 if (Character::treatAsSpace(currentCharacter) && !Character::treatAsSpac
e(lastCharacter)) | 95 if (Character::treatAsSpace(currentCharacter) && !Character::treatAsSpac
e(lastCharacter)) |
106 spacing += m_font.fontDescription().wordSpacing(); | 96 spacing += m_font.fontDescription().wordSpacing(); |
107 } | 97 } |
108 | 98 |
109 return spacing; | 99 return spacing; |
110 } | 100 } |
111 | 101 |
112 } | 102 } |
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