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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 |
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49 const Font& scaledFont = textRenderer->scaledFont(); | 49 const Font& scaledFont = textRenderer->scaledFont(); |
50 | 50 |
51 // Calculate width/height using the scaled font, divide this result by the s
calingFactor afterwards. | 51 // Calculate width/height using the scaled font, divide this result by the s
calingFactor afterwards. |
52 m_width = scaledFont.width(run) / scalingFactor; | 52 m_width = scaledFont.width(run) / scalingFactor; |
53 m_height = scaledFont.fontMetrics().floatHeight() / scalingFactor; | 53 m_height = scaledFont.fontMetrics().floatHeight() / scalingFactor; |
54 | 54 |
55 ASSERT(run.length() >= 0); | 55 ASSERT(run.length() >= 0); |
56 m_length = static_cast<unsigned>(run.length()); | 56 m_length = static_cast<unsigned>(run.length()); |
57 } | 57 } |
58 | 58 |
59 TextRun SVGTextMetrics::constructTextRun(LayoutSVGInlineText* text, unsigned pos
ition, unsigned length) | |
60 { | |
61 ASSERT(text->style()); | |
62 return constructTextRun(text, position, length, text->style()->direction()); | |
63 } | |
64 | |
65 TextRun SVGTextMetrics::constructTextRun(LayoutSVGInlineText* text, unsigned pos
ition, unsigned length, TextDirection textDirection) | 59 TextRun SVGTextMetrics::constructTextRun(LayoutSVGInlineText* text, unsigned pos
ition, unsigned length, TextDirection textDirection) |
66 { | 60 { |
67 const LayoutStyle& style = text->styleRef(); | 61 const LayoutStyle& style = text->styleRef(); |
68 | 62 |
69 TextRun run(static_cast<const LChar*>(0) // characters, will be set below if
non-zero. | 63 TextRun run(static_cast<const LChar*>(0) // characters, will be set below if
non-zero. |
70 , 0 // length, will be set below if non-zero. | 64 , 0 // length, will be set below if non-zero. |
71 , 0 // xPos, only relevant with allowTabs=true | 65 , 0 // xPos, only relevant with allowTabs=true |
72 , 0 // padding, only relevant for justified text, not relevant for SVG | 66 , 0 // padding, only relevant for justified text, not relevant for SVG |
73 , TextRun::AllowTrailingExpansion | 67 , TextRun::AllowTrailingExpansion |
74 , textDirection | 68 , textDirection |
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89 ASSERT(run.charactersLength() >= run.length()); | 83 ASSERT(run.charactersLength() >= run.length()); |
90 return run; | 84 return run; |
91 } | 85 } |
92 | 86 |
93 SVGTextMetrics SVGTextMetrics::measureCharacterRange(LayoutSVGInlineText* text,
unsigned position, unsigned length, TextDirection textDirection) | 87 SVGTextMetrics SVGTextMetrics::measureCharacterRange(LayoutSVGInlineText* text,
unsigned position, unsigned length, TextDirection textDirection) |
94 { | 88 { |
95 ASSERT(text); | 89 ASSERT(text); |
96 return SVGTextMetrics(text, constructTextRun(text, position, length, textDir
ection)); | 90 return SVGTextMetrics(text, constructTextRun(text, position, length, textDir
ection)); |
97 } | 91 } |
98 | 92 |
99 SVGTextMetrics SVGTextMetrics::measureCharacterRange(LayoutSVGInlineText* text,
unsigned position, unsigned length) | |
100 { | |
101 ASSERT(text); | |
102 return SVGTextMetrics(text, constructTextRun(text, position, length)); | |
103 } | |
104 | |
105 SVGTextMetrics::SVGTextMetrics(LayoutSVGInlineText* text, unsigned position, uns
igned length, float width) | 93 SVGTextMetrics::SVGTextMetrics(LayoutSVGInlineText* text, unsigned position, uns
igned length, float width) |
106 { | 94 { |
107 ASSERT(text); | 95 ASSERT(text); |
108 | 96 |
109 float scalingFactor = text->scalingFactor(); | 97 float scalingFactor = text->scalingFactor(); |
110 ASSERT(scalingFactor); | 98 ASSERT(scalingFactor); |
111 | 99 |
112 m_width = width / scalingFactor; | 100 m_width = width / scalingFactor; |
113 m_height = text->scaledFont().fontMetrics().floatHeight() / scalingFactor; | 101 m_height = text->scaledFont().fontMetrics().floatHeight() / scalingFactor; |
114 | 102 |
115 m_length = length; | 103 m_length = length; |
116 } | 104 } |
117 | 105 |
118 } | 106 } |
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