1/* 2 * Copyright (C) 2008 Alp Toker <alp@atoker.com> 3 * Copyright (C) 2010 Igalia S.L. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 * 20 */ 21 22#include "config.h" 23#include "FontCustomPlatformData.h" 24 25#include "FontPlatformData.h" 26#include "SharedBuffer.h" 27#include <cairo-ft.h> 28#include <cairo.h> 29 30namespace WebCore { 31 32static void releaseCustomFontData(void* data) 33{ 34 static_cast<SharedBuffer*>(data)->deref(); 35} 36 37FontCustomPlatformData::FontCustomPlatformData(FT_Face freeTypeFace, SharedBuffer& buffer) 38 : m_freeTypeFace(freeTypeFace) 39 , m_fontFace(cairo_ft_font_face_create_for_ft_face(freeTypeFace, 0)) 40{ 41 // FIXME Should we be setting some hinting options here? 42 43 buffer.ref(); // This is balanced by the buffer->deref() in releaseCustomFontData. 44 static cairo_user_data_key_t bufferKey; 45 cairo_font_face_set_user_data(m_fontFace, &bufferKey, &buffer, 46 static_cast<cairo_destroy_func_t>(releaseCustomFontData)); 47 48 // Cairo doesn't do FreeType reference counting, so we need to ensure that when 49 // this cairo_font_face_t is destroyed, it cleans up the FreeType face as well. 50 static cairo_user_data_key_t freeTypeFaceKey; 51 cairo_font_face_set_user_data(m_fontFace, &freeTypeFaceKey, freeTypeFace, 52 reinterpret_cast<cairo_destroy_func_t>(FT_Done_Face)); 53} 54 55FontCustomPlatformData::~FontCustomPlatformData() 56{ 57 // m_freeTypeFace will be destroyed along with m_fontFace. See the constructor. 58 cairo_font_face_destroy(m_fontFace); 59} 60 61FontPlatformData FontCustomPlatformData::fontPlatformData(int size, bool bold, bool italic, FontOrientation orientation, FontWidthVariant, FontRenderingMode) 62{ 63 return FontPlatformData(m_fontFace, size, bold, italic, orientation); 64} 65 66std::unique_ptr<FontCustomPlatformData> createFontCustomPlatformData(SharedBuffer& buffer) 67{ 68 static FT_Library library; 69 if (!library && FT_Init_FreeType(&library)) { 70 library = nullptr; 71 return nullptr; 72 } 73 74 FT_Face freeTypeFace; 75 if (FT_New_Memory_Face(library, reinterpret_cast<const FT_Byte*>(buffer.data()), buffer.size(), 0, &freeTypeFace)) 76 return nullptr; 77 return std::make_unique<FontCustomPlatformData>(freeTypeFace, buffer); 78} 79 80bool FontCustomPlatformData::supportsFormat(const String& format) 81{ 82 return equalIgnoringCase(format, "truetype") || equalIgnoringCase(format, "opentype") || equalIgnoringCase(format, "woff"); 83} 84 85} 86