1 /* 2 * Copyright (C) 2005, 2006 Apple Computer, Inc. All rights reserved. 3 * Copyright (C) 2006 Alexey Proskuryakov 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 15 * its contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #import "config.h" 31 #import "SimpleFontData.h" 32 33 #if USE(ATSUI) 34 35 #import "Font.h" 36 #import "FontCache.h" 37 #import "FontDescription.h" 38 #import <ApplicationServices/ApplicationServices.h> 39 #import <AppKit/AppKit.h> 40 #import <wtf/Assertions.h> 41 42 using namespace std; 43 44 namespace WebCore { 45 46 void SimpleFontData::checkShapesArabic() const 47 { 48 ASSERT(!m_checkedShapesArabic); 49 50 m_checkedShapesArabic = true; 51 52 ATSUFontID fontID = m_platformData.ctFont() ? CTFontGetPlatformFont(m_platformData.ctFont(), 0) : 0; 53 if (!fontID) { 54 LOG_ERROR("unable to get ATSUFontID for %@", m_platformData.font()); 55 return; 56 } 57 58 // This function is called only on fonts that contain Arabic glyphs. Our 59 // heuristic is that if such a font has a glyph metamorphosis table, then 60 // it includes shaping information for Arabic. 61 FourCharCode tables[] = { 'morx', 'mort' }; 62 for (size_t i = 0; i < WTF_ARRAY_LENGTH(tables); ++i) { 63 ByteCount tableSize; 64 OSStatus status = ATSFontGetTable(fontID, tables[i], 0, 0, 0, &tableSize); 65 if (status == noErr) { 66 m_shapesArabic = true; 67 return; 68 } 69 70 if (status != kATSInvalidFontTableAccess) 71 LOG_ERROR("ATSFontGetTable failed (%d)", status); 72 } 73 } 74 75 } // namespace WebCore 76 77 #endif 78
