1 /* 2 * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 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 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef SVGTextMetrics_h 21 #define SVGTextMetrics_h 22 23 #include "platform/fonts/Glyph.h" 24 #include "platform/text/TextDirection.h" 25 #include "wtf/text/WTFString.h" 26 27 namespace blink { 28 29 class RenderSVGInlineText; 30 class TextRun; 31 32 class SVGTextMetrics { 33 public: 34 enum MetricsType { 35 SkippedSpaceMetrics 36 }; 37 38 SVGTextMetrics(); 39 SVGTextMetrics(MetricsType); 40 SVGTextMetrics(RenderSVGInlineText*, unsigned position, unsigned length, float width, Glyph glyphNameGlyphId); 41 42 // FIXME: Migrate away from these to the two below. 43 static SVGTextMetrics measureCharacterRange(RenderSVGInlineText*, unsigned position, unsigned length); 44 static TextRun constructTextRun(RenderSVGInlineText*, unsigned position, unsigned length); 45 46 static SVGTextMetrics measureCharacterRange(RenderSVGInlineText*, unsigned position, unsigned length, TextDirection); 47 static TextRun constructTextRun(RenderSVGInlineText*, unsigned position, unsigned length, TextDirection); 48 49 bool isEmpty() const { return !m_width && !m_height && m_length <= 1; } 50 51 float width() const { return m_width; } 52 void setWidth(float width) { m_width = width; } 53 54 float height() const { return m_height; } 55 unsigned length() const { return m_length; } 56 57 // Only useful when measuring individual characters, to lookup ligatures. 58 Glyph glyph() const { return m_glyph; } 59 60 private: 61 SVGTextMetrics(RenderSVGInlineText*, const TextRun&); 62 63 float m_width; 64 float m_height; 65 unsigned m_length; 66 Glyph m_glyph; 67 }; 68 69 } // namespace blink 70 71 #endif 72
