1/* 2 * Copyright (C) 2007, 2008, 2009, 2010, 2013 Apple Inc. 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 21#include "config.h" 22#include "FontCustomPlatformData.h" 23 24#include "FontPlatformData.h" 25#include "OpenTypeUtilities.h" 26#include "SharedBuffer.h" 27#include <ApplicationServices/ApplicationServices.h> 28#include <WebKitSystemInterface/WebKitSystemInterface.h> 29#include <wtf/RetainPtr.h> 30#include <wtf/text/Base64.h> 31#include <wtf/win/GDIObject.h> 32 33namespace WebCore { 34 35using namespace std; 36 37FontCustomPlatformData::~FontCustomPlatformData() 38{ 39 if (m_fontReference) 40 RemoveFontMemResourceEx(m_fontReference); 41} 42 43FontPlatformData FontCustomPlatformData::fontPlatformData(int size, bool bold, bool italic, FontOrientation, FontWidthVariant, FontRenderingMode renderingMode) 44{ 45 ASSERT(m_fontReference); 46 47 LOGFONT& logFont = *static_cast<LOGFONT*>(malloc(sizeof(LOGFONT))); 48 memcpy(logFont.lfFaceName, m_name.charactersWithNullTermination().data(), sizeof(logFont.lfFaceName[0]) * std::min<size_t>(static_cast<size_t>(LF_FACESIZE), 1 + m_name.length())); 49 50 logFont.lfHeight = -size; 51 if (renderingMode == NormalRenderingMode) 52 logFont.lfHeight *= 32; 53 logFont.lfWidth = 0; 54 logFont.lfEscapement = 0; 55 logFont.lfOrientation = 0; 56 logFont.lfUnderline = false; 57 logFont.lfStrikeOut = false; 58 logFont.lfCharSet = DEFAULT_CHARSET; 59 logFont.lfOutPrecision = OUT_TT_ONLY_PRECIS; 60 logFont.lfQuality = CLEARTYPE_QUALITY; 61 logFont.lfPitchAndFamily = DEFAULT_PITCH | FF_DONTCARE; 62 logFont.lfItalic = italic; 63 logFont.lfWeight = bold ? 700 : 400; 64 65 auto hfont = adoptGDIObject(::CreateFontIndirect(&logFont)); 66 67 RetainPtr<CGFontRef> cgFont = adoptCF(CGFontCreateWithPlatformFont(&logFont)); 68 return FontPlatformData(WTF::move(hfont), cgFont.get(), size, bold, italic, renderingMode == AlternateRenderingMode); 69} 70 71// Creates a unique and unpredictable font name, in order to avoid collisions and to 72// not allow access from CSS. 73static String createUniqueFontName() 74{ 75 GUID fontUuid; 76 CoCreateGuid(&fontUuid); 77 78 String fontName = base64Encode(reinterpret_cast<char*>(&fontUuid), sizeof(fontUuid)); 79 ASSERT(fontName.length() < LF_FACESIZE); 80 return fontName; 81} 82 83std::unique_ptr<FontCustomPlatformData> createFontCustomPlatformData(SharedBuffer& buffer) 84{ 85 String fontName = createUniqueFontName(); 86 HANDLE fontReference; 87 fontReference = renameAndActivateFont(buffer, fontName); 88 if (!fontReference) 89 return nullptr; 90 return std::make_unique<FontCustomPlatformData>(fontReference, fontName); 91} 92 93bool FontCustomPlatformData::supportsFormat(const String& format) 94{ 95 return equalIgnoringCase(format, "truetype") || equalIgnoringCase(format, "opentype") || equalIgnoringCase(format, "woff"); 96} 97 98} 99