1231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block/* 2231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 3231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * Copyright (C) 2009 Maxime Simon <simon.maxime@gmail.com> All rights reserved. 4231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * 5231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * Redistribution and use in source and binary forms, with or without 6231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * modification, are permitted provided that the following conditions 7231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * are met: 8231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * 9231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * 1. Redistributions of source code must retain the above copyright 10231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * notice, this list of conditions and the following disclaimer. 11231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * 2. Redistributions in binary form must reproduce the above copyright 12231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * notice, this list of conditions and the following disclaimer in the 13231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * documentation and/or other materials provided with the distribution. 14231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 15231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * its contributors may be used to endorse or promote products derived 16231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * from this software without specific prior written permission. 17231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * 18231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 19231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 22231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block */ 29231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 30231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block#include "config.h" 31231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block#include "SimpleFontData.h" 32231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 33231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block#include "FloatRect.h" 34231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block#include "FontCache.h" 35231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block#include "FontDescription.h" 36231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block#include "NotImplemented.h" 3721939df44de1705786c545cd1bf519d47250322dBen Murdoch#include "TextEncoding.h" 3821939df44de1705786c545cd1bf519d47250322dBen Murdoch#include <wtf/text/CString.h> 39231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 40231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 41231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Blocknamespace WebCore { 42231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 43231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Blockvoid SimpleFontData::platformInit() 44231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block{ 4521939df44de1705786c545cd1bf519d47250322dBen Murdoch const BFont* font = m_platformData.font(); 46231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block if (!font) 47231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block return; 48231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 49231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block font_height height; 50231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block font->GetHeight(&height); 512fc2651226baac27029e38c9d6ef883fa32084dbSteve Block m_fontMetrics.setAscent(height.ascent); 522fc2651226baac27029e38c9d6ef883fa32084dbSteve Block m_fontMetrics.setDescent(height.descent); 532fc2651226baac27029e38c9d6ef883fa32084dbSteve Block m_fontMetrics.setXHeight(height.ascent * 0.56f); // Hack taken from the win port. 542fc2651226baac27029e38c9d6ef883fa32084dbSteve Block m_fontMetrics.setLineGap(height.leading); 552fc2651226baac27029e38c9d6ef883fa32084dbSteve Block m_fontMetrics.setLineSpacing(lroundf(height.ascent) + lroundf(height.descent) + lroundf(height.leading)); 56231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block} 57231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 58231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Blockvoid SimpleFontData::platformCharWidthInit() 59231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block{ 60231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block m_avgCharWidth = 0.f; 61231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block m_maxCharWidth = 0.f; 62231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block initCharWidths(); 63231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block} 64231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 65231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Blockvoid SimpleFontData::platformDestroy() 66231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block{ 67231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block} 68231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 69f05b935882198ccf7d81675736e3aeb089c5113aBen MurdochSimpleFontData* SimpleFontData::scaledFontData(const FontDescription& fontDescription, float scaleFactor) const 70f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch{ 71f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch FontDescription desc = FontDescription(fontDescription); 72f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch desc.setSpecifiedSize(scaleFactor * fontDescription.computedSize()); 73f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch FontPlatformData fontPlatformData(desc, desc.family().family()); 74f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch return new SimpleFontData(fontPlatformData, isCustomFont(), false); 75f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch} 76f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 77231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve BlockSimpleFontData* SimpleFontData::smallCapsFontData(const FontDescription& fontDescription) const 78231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block{ 79f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch if (!m_derivedFontData) 80f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch m_derivedFontData = DerivedFontData::create(isCustomFont()); 81f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch if (!m_derivedFontData->smallCaps) 82f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch m_derivedFontData->smallCaps = scaledFontData(fontDescription, .7); 83f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 84f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch return m_derivedFontData->smallCaps.get(); 85f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch} 86f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 87f05b935882198ccf7d81675736e3aeb089c5113aBen MurdochSimpleFontData* SimpleFontData::emphasisMarkFontData(const FontDescription& fontDescription) const 88f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch{ 89f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch if (!m_derivedFontData) 90f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch m_derivedFontData = DerivedFontData::create(isCustomFont()); 91f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch if (!m_derivedFontData->emphasisMark) 92f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch m_derivedFontData->emphasisMark = scaledFontData(fontDescription, .5); 93f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 94f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch return m_derivedFontData->emphasisMark.get(); 95231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block} 96231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 97231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Blockbool SimpleFontData::containsCharacters(const UChar* characters, int length) const 98231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block{ 99231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block // FIXME: We will need to implement this to load non-ASCII encoding sites 100231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block return true; 101231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block} 102231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 103231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Blockvoid SimpleFontData::determinePitch() 104231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block{ 105231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block m_treatAsFixedPitch = m_platformData.font() && m_platformData.font()->IsFixed(); 106231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block} 107231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 108dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve BlockGlyphMetrics SimpleFontData::platformMetricsForGlyph(Glyph glyph, GlyphMetricsMode) const 109231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block{ 11021939df44de1705786c545cd1bf519d47250322dBen Murdoch GlyphMetrics metrics; 111cac0f67c402d107cdb10971b95719e2ff9c7c76bSteve Block if (!m_platformData.font()) 11221939df44de1705786c545cd1bf519d47250322dBen Murdoch return metrics; 113231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 11421939df44de1705786c545cd1bf519d47250322dBen Murdoch CString encoded = UTF8Encoding().encode(static_cast<UChar*>(&glyph), 1, 11521939df44de1705786c545cd1bf519d47250322dBen Murdoch URLEncodedEntitiesForUnencodables); 116cac0f67c402d107cdb10971b95719e2ff9c7c76bSteve Block float escapements[1]; 11721939df44de1705786c545cd1bf519d47250322dBen Murdoch m_platformData.font()->GetEscapements(encoded.data(), 1, escapements); 118dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block metrics.horizontalAdvance = escapements[0] * m_platformData.font()->Size(); 119dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block return metrics; 120231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block} 121231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 122231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block} // namespace WebCore 123231d4e3152a9c27a73b6ac7badbe6be673aa3ddfSteve Block 124