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| 1 /* | 1 /* |
| 2 * Copyright (C) 2011 Apple Inc. All rights reserved. | 2 * Copyright (C) 2011 Apple Inc. 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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| 53 | 53 |
| 54 float LayoutTextCombine::width(unsigned from, unsigned length, const Font& font,
LayoutUnit xPosition, TextDirection direction, HashSet<const SimpleFontData*>*
fallbackFonts, FloatRect* glyphBounds) const | 54 float LayoutTextCombine::width(unsigned from, unsigned length, const Font& font,
LayoutUnit xPosition, TextDirection direction, HashSet<const SimpleFontData*>*
fallbackFonts, FloatRect* glyphBounds) const |
| 55 { | 55 { |
| 56 if (!length) | 56 if (!length) |
| 57 return 0; | 57 return 0; |
| 58 | 58 |
| 59 if (hasEmptyText()) | 59 if (hasEmptyText()) |
| 60 return 0; | 60 return 0; |
| 61 | 61 |
| 62 if (m_isCombined) | 62 if (m_isCombined) |
| 63 return font.fontDescription().computedSize(); | 63 return font.getFontDescription().computedSize(); |
| 64 | 64 |
| 65 return LayoutText::width(from, length, font, xPosition, direction, fallbackF
onts, glyphBounds); | 65 return LayoutText::width(from, length, font, xPosition, direction, fallbackF
onts, glyphBounds); |
| 66 } | 66 } |
| 67 | 67 |
| 68 void scaleHorizontallyAndTranslate(GraphicsContext& context, float scaleX, float
centerX, float offsetX, float offsetY) | 68 void scaleHorizontallyAndTranslate(GraphicsContext& context, float scaleX, float
centerX, float offsetX, float offsetY) |
| 69 { | 69 { |
| 70 context.concatCTM(AffineTransform(scaleX, 0, 0, 1, centerX * (1.0f - scaleX)
+ offsetX * scaleX, offsetY)); | 70 context.concatCTM(AffineTransform(scaleX, 0, 0, 1, centerX * (1.0f - scaleX)
+ offsetX * scaleX, offsetY)); |
| 71 } | 71 } |
| 72 | 72 |
| 73 void LayoutTextCombine::transformToInlineCoordinates(GraphicsContext& context, c
onst LayoutRect& boxRect, bool clip) const | 73 void LayoutTextCombine::transformToInlineCoordinates(GraphicsContext& context, c
onst LayoutRect& boxRect, bool clip) const |
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| 125 if (!m_needsFontUpdate) | 125 if (!m_needsFontUpdate) |
| 126 return; | 126 return; |
| 127 | 127 |
| 128 m_needsFontUpdate = false; | 128 m_needsFontUpdate = false; |
| 129 | 129 |
| 130 if (!m_isCombined) | 130 if (!m_isCombined) |
| 131 return; | 131 return; |
| 132 | 132 |
| 133 unsigned offset = 0; | 133 unsigned offset = 0; |
| 134 TextRun run = constructTextRun(originalFont(), this, offset, textLength(), s
tyleRef(), style()->direction()); | 134 TextRun run = constructTextRun(originalFont(), this, offset, textLength(), s
tyleRef(), style()->direction()); |
| 135 FontDescription description = originalFont().fontDescription(); | 135 FontDescription description = originalFont().getFontDescription(); |
| 136 float emWidth = description.computedSize(); | 136 float emWidth = description.computedSize(); |
| 137 if (!(style()->textDecorationsInEffect() & (TextDecorationUnderline | TextDe
corationOverline))) | 137 if (!(style()->textDecorationsInEffect() & (TextDecorationUnderline | TextDe
corationOverline))) |
| 138 emWidth *= textCombineMargin; | 138 emWidth *= textCombineMargin; |
| 139 | 139 |
| 140 description.setOrientation(FontOrientation::Horizontal); // We are going to
draw combined text horizontally. | 140 description.setOrientation(FontOrientation::Horizontal); // We are going to
draw combined text horizontally. |
| 141 m_combinedTextWidth = originalFont().width(run); | 141 m_combinedTextWidth = originalFont().width(run); |
| 142 | 142 |
| 143 FontSelector* fontSelector = style()->font().fontSelector(); | 143 FontSelector* fontSelector = style()->font().getFontSelector(); |
| 144 | 144 |
| 145 bool shouldUpdateFont = mutableStyleRef().setFontDescription(description); /
/ Need to change font orientation to horizontal. | 145 bool shouldUpdateFont = mutableStyleRef().setFontDescription(description); /
/ Need to change font orientation to horizontal. |
| 146 | 146 |
| 147 if (m_combinedTextWidth <= emWidth) { | 147 if (m_combinedTextWidth <= emWidth) { |
| 148 m_scaleX = 1.0f; | 148 m_scaleX = 1.0f; |
| 149 } else { | 149 } else { |
| 150 // Need to try compressed glyphs. | 150 // Need to try compressed glyphs. |
| 151 static const FontWidthVariant widthVariants[] = { HalfWidth, ThirdWidth,
QuarterWidth }; | 151 static const FontWidthVariant widthVariants[] = { HalfWidth, ThirdWidth,
QuarterWidth }; |
| 152 for (size_t i = 0 ; i < WTF_ARRAY_LENGTH(widthVariants) ; ++i) { | 152 for (size_t i = 0 ; i < WTF_ARRAY_LENGTH(widthVariants) ; ++i) { |
| 153 description.setWidthVariant(widthVariants[i]); | 153 description.setWidthVariant(widthVariants[i]); |
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| 171 } else { | 171 } else { |
| 172 m_scaleX = 1.0f; | 172 m_scaleX = 1.0f; |
| 173 } | 173 } |
| 174 } | 174 } |
| 175 | 175 |
| 176 if (shouldUpdateFont) | 176 if (shouldUpdateFont) |
| 177 style()->font().update(fontSelector); | 177 style()->font().update(fontSelector); |
| 178 } | 178 } |
| 179 | 179 |
| 180 } // namespace blink | 180 } // namespace blink |
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