1/* 2 * This file is part of the internal font implementation. It should not be included by anyone other than 3 * FontMac.cpp, FontWin.cpp and Font.cpp. 4 * 5 * Copyright (C) 2006, 2007, 2008 Apple Inc. 6 * Copyright (C) 2007 Alp Toker 7 * Copyright (C) 2008, 2010, 2011 Brent Fulgham 8 * 9 * This library is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Library General Public 11 * License as published by the Free Software Foundation; either 12 * version 2 of the License, or (at your option) any later version. 13 * 14 * This library is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Library General Public License for more details. 18 * 19 * You should have received a copy of the GNU Library General Public License 20 * along with this library; see the file COPYING.LIB. If not, write to 21 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 22 * Boston, MA 02110-1301, USA. 23 * 24 */ 25 26#include "config.h" 27#include "FontPlatformData.h" 28 29#include <wtf/HashMap.h> 30#include <wtf/RetainPtr.h> 31#include <wtf/Vector.h> 32#include <wtf/text/StringHash.h> 33#include <wtf/text/WTFString.h> 34 35#include <cairo-win32.h> 36 37using namespace std; 38 39namespace WebCore { 40 41void FontPlatformData::platformDataInit(HFONT font, float size, HDC hdc, WCHAR* faceName) 42{ 43 cairo_font_face_t* fontFace = cairo_win32_font_face_create_for_hfont(font); 44 45 cairo_matrix_t sizeMatrix, ctm; 46 cairo_matrix_init_identity(&ctm); 47 cairo_matrix_init_scale(&sizeMatrix, size, size); 48 49 static cairo_font_options_t* fontOptions = 0; 50 if (!fontOptions) { 51 fontOptions = cairo_font_options_create(); 52 cairo_font_options_set_antialias(fontOptions, CAIRO_ANTIALIAS_SUBPIXEL); 53 } 54 55 m_scaledFont = cairo_scaled_font_create(fontFace, &sizeMatrix, &ctm, fontOptions); 56 cairo_font_face_destroy(fontFace); 57} 58 59FontPlatformData::FontPlatformData(GDIObject<HFONT> font, cairo_font_face_t* fontFace, float size, bool bold, bool oblique) 60 : m_font(SharedGDIObject<HFONT>::create(WTF::move(font))) 61 , m_size(size) 62 , m_orientation(Horizontal) 63 , m_widthVariant(RegularWidth) 64 , m_scaledFont(0) 65 , m_isCompositeFontReference(false) 66 , m_isColorBitmapFont(false) 67 , m_syntheticBold(bold) 68 , m_syntheticOblique(oblique) 69 , m_useGDI(false) 70{ 71 cairo_matrix_t fontMatrix; 72 cairo_matrix_init_scale(&fontMatrix, size, size); 73 cairo_matrix_t ctm; 74 cairo_matrix_init_identity(&ctm); 75 cairo_font_options_t* options = cairo_font_options_create(); 76 77 // We force antialiasing and disable hinting to provide consistent 78 // typographic qualities for custom fonts on all platforms. 79 cairo_font_options_set_hint_style(options, CAIRO_HINT_STYLE_NONE); 80 cairo_font_options_set_antialias(options, CAIRO_ANTIALIAS_GRAY); 81 82 if (syntheticOblique()) { 83 static const float syntheticObliqueSkew = -tanf(14 * acosf(0) / 90); 84 cairo_matrix_t skew = {1, 0, syntheticObliqueSkew, 1, 0, 0}; 85 cairo_matrix_multiply(&fontMatrix, &skew, &fontMatrix); 86 } 87 88 m_scaledFont = cairo_scaled_font_create(fontFace, &fontMatrix, &ctm, options); 89 cairo_font_options_destroy(options); 90} 91 92FontPlatformData::~FontPlatformData() 93{ 94 if (m_scaledFont && m_scaledFont != hashTableDeletedFontValue()) 95 cairo_scaled_font_destroy(m_scaledFont); 96} 97 98void FontPlatformData::platformDataInit(const FontPlatformData& source) 99{ 100 m_font = source.m_font; 101 m_useGDI = source.m_useGDI; 102 m_scaledFont = 0; 103 104 if (source.m_scaledFont) 105 m_scaledFont = cairo_scaled_font_reference(source.m_scaledFont); 106} 107 108const FontPlatformData& FontPlatformData::platformDataAssign(const FontPlatformData& other) 109{ 110 m_font = other.m_font; 111 m_useGDI = other.m_useGDI; 112 113 if (m_scaledFont && m_scaledFont != hashTableDeletedFontValue()) 114 cairo_scaled_font_destroy(m_scaledFont); 115 116 m_scaledFont = cairo_scaled_font_reference(other.m_scaledFont); 117 118 return *this; 119} 120 121bool FontPlatformData::platformIsEqual(const FontPlatformData& other) const 122{ 123 return m_font == other.m_font 124 && m_scaledFont == other.m_scaledFont 125 && m_useGDI == other.m_useGDI; 126} 127 128} 129