1 /* 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 3 * Copyright (C) 2009 Maxime Simon <simon.maxime (at) gmail.com> All rights reserved. 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 #include "config.h" 31 #include "SimpleFontData.h" 32 33 #include "FloatRect.h" 34 #include "FontCache.h" 35 #include "FontDescription.h" 36 #include "NotImplemented.h" 37 #include <Rect.h> 38 #include <unicode/uchar.h> 39 #include <unicode/unorm.h> 40 41 42 extern int charUnicodeToUTF8HACK(unsigned short, char*); 43 44 namespace WebCore { 45 46 void SimpleFontData::platformInit() 47 { 48 BFont* font = m_platformData.font(); 49 if (!font) 50 return; 51 52 font_height height; 53 font->GetHeight(&height); 54 m_ascent = static_cast<int>(height.ascent); 55 m_descent = static_cast<int>(height.descent); 56 m_lineSpacing = m_ascent + m_descent; 57 m_xHeight = height.ascent * 0.56f; // Hack taken from the win port. 58 m_lineGap = height.leading; 59 } 60 61 void SimpleFontData::platformCharWidthInit() 62 { 63 m_avgCharWidth = 0.f; 64 m_maxCharWidth = 0.f; 65 initCharWidths(); 66 } 67 68 void SimpleFontData::platformDestroy() 69 { 70 delete m_smallCapsFontData; 71 m_smallCapsFontData = 0; 72 } 73 74 SimpleFontData* SimpleFontData::smallCapsFontData(const FontDescription& fontDescription) const 75 { 76 if (!m_smallCapsFontData) { 77 FontDescription desc = FontDescription(fontDescription); 78 desc.setSpecifiedSize(0.70f * fontDescription.computedSize()); 79 const FontPlatformData* fontPlatformData = new FontPlatformData(desc, desc.family().family()); 80 m_smallCapsFontData = new SimpleFontData(*fontPlatformData); 81 } 82 return m_smallCapsFontData; 83 } 84 85 bool SimpleFontData::containsCharacters(const UChar* characters, int length) const 86 { 87 // FIXME: We will need to implement this to load non-ASCII encoding sites 88 return true; 89 } 90 91 void SimpleFontData::determinePitch() 92 { 93 m_treatAsFixedPitch = m_platformData.font() && m_platformData.font()->IsFixed(); 94 } 95 96 float SimpleFontData::platformWidthForGlyph(Glyph glyph) const 97 { 98 if (!m_platformData.font()) 99 return 0; 100 101 char charArray[4]; 102 float escapements[1]; 103 104 charUnicodeToUTF8HACK(glyph, charArray); 105 m_platformData.font()->GetEscapements(charArray, 1, escapements); 106 return escapements[0] * m_platformData.font()->Size(); 107 } 108 109 } // namespace WebCore 110 111
