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Diffstat (limited to 'WebCore/platform/graphics/SimpleFontData.cpp')
| -rw-r--r-- | WebCore/platform/graphics/SimpleFontData.cpp | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/WebCore/platform/graphics/SimpleFontData.cpp b/WebCore/platform/graphics/SimpleFontData.cpp deleted file mode 100644 index e773880..0000000 --- a/WebCore/platform/graphics/SimpleFontData.cpp +++ /dev/null @@ -1,239 +0,0 @@ -/* - * Copyright (C) 2005, 2008, 2010 Apple Inc. All rights reserved. - * Copyright (C) 2006 Alexey Proskuryakov - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of - * its contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" -#include "SimpleFontData.h" - -#include "Font.h" -#include "FontCache.h" - -#if ENABLE(SVG_FONTS) -#include "SVGFontData.h" -#include "SVGFontElement.h" -#include "SVGFontFaceElement.h" -#include "SVGGlyphElement.h" -#endif - -#include <wtf/MathExtras.h> -#include <wtf/UnusedParam.h> - -using namespace std; - -namespace WebCore { - -SimpleFontData::SimpleFontData(const FontPlatformData& platformData, bool isCustomFont, bool isLoading) - : m_maxCharWidth(-1) - , m_avgCharWidth(-1) - , m_unitsPerEm(defaultUnitsPerEm) - , m_orientation(platformData.orientation()) - , m_platformData(platformData) - , m_treatAsFixedPitch(false) - , m_isCustomFont(isCustomFont) - , m_isLoading(isLoading) - , m_isBrokenIdeographFont(false) -{ - platformInit(); - platformGlyphInit(); - platformCharWidthInit(); -} - -#if ENABLE(SVG_FONTS) -SimpleFontData::SimpleFontData(PassOwnPtr<SVGFontData> svgFontData, int size, bool syntheticBold, bool syntheticItalic) - : m_orientation(Horizontal) - , m_platformData(FontPlatformData(size, syntheticBold, syntheticItalic)) - , m_treatAsFixedPitch(false) - , m_svgFontData(svgFontData) - , m_isCustomFont(true) - , m_isLoading(false) - , m_isBrokenIdeographFont(false) -{ - SVGFontFaceElement* svgFontFaceElement = m_svgFontData->svgFontFaceElement(); - m_unitsPerEm = svgFontFaceElement->unitsPerEm(); - - double scale = size; - if (m_unitsPerEm) - scale /= m_unitsPerEm; - - m_ascent = static_cast<int>(svgFontFaceElement->ascent() * scale); - m_descent = static_cast<int>(svgFontFaceElement->descent() * scale); - m_xHeight = static_cast<int>(svgFontFaceElement->xHeight() * scale); - m_lineGap = 0.1f * size; - m_lineSpacing = m_ascent + m_descent + m_lineGap; - - SVGFontElement* associatedFontElement = svgFontFaceElement->associatedFontElement(); - - Vector<SVGGlyphIdentifier> spaceGlyphs; - associatedFontElement->getGlyphIdentifiersForString(String(" ", 1), spaceGlyphs); - m_spaceWidth = spaceGlyphs.isEmpty() ? m_xHeight : static_cast<float>(spaceGlyphs.first().horizontalAdvanceX * scale); - - Vector<SVGGlyphIdentifier> numeralZeroGlyphs; - associatedFontElement->getGlyphIdentifiersForString(String("0", 1), numeralZeroGlyphs); - m_avgCharWidth = numeralZeroGlyphs.isEmpty() ? m_spaceWidth : static_cast<float>(numeralZeroGlyphs.first().horizontalAdvanceX * scale); - - Vector<SVGGlyphIdentifier> letterWGlyphs; - associatedFontElement->getGlyphIdentifiersForString(String("W", 1), letterWGlyphs); - m_maxCharWidth = letterWGlyphs.isEmpty() ? m_ascent : static_cast<float>(letterWGlyphs.first().horizontalAdvanceX * scale); - - // FIXME: is there a way we can get the space glyph from the SVGGlyphIdentifier above? - m_spaceGlyph = 0; - m_zeroWidthSpaceGlyph = 0; - determinePitch(); - m_adjustedSpaceWidth = roundf(m_spaceWidth); - m_missingGlyphData.fontData = this; - m_missingGlyphData.glyph = 0; -} -#endif - -#if !PLATFORM(QT) -// Estimates of avgCharWidth and maxCharWidth for platforms that don't support accessing these values from the font. -void SimpleFontData::initCharWidths() -{ - GlyphPage* glyphPageZero = GlyphPageTreeNode::getRootChild(this, 0)->page(); - - // Treat the width of a '0' as the avgCharWidth. - if (m_avgCharWidth <= 0.f && glyphPageZero) { - static const UChar32 digitZeroChar = '0'; - Glyph digitZeroGlyph = glyphPageZero->glyphDataForCharacter(digitZeroChar).glyph; - if (digitZeroGlyph) - m_avgCharWidth = widthForGlyph(digitZeroGlyph); - } - - // If we can't retrieve the width of a '0', fall back to the x height. - if (m_avgCharWidth <= 0.f) - m_avgCharWidth = m_xHeight; - - if (m_maxCharWidth <= 0.f) - m_maxCharWidth = max<float>(m_avgCharWidth, m_ascent); -} - -void SimpleFontData::platformGlyphInit() -{ - GlyphPage* glyphPageZero = GlyphPageTreeNode::getRootChild(this, 0)->page(); - if (!glyphPageZero) { - LOG_ERROR("Failed to get glyph page zero."); - m_spaceGlyph = 0; - m_spaceWidth = 0; - m_adjustedSpaceWidth = 0; - determinePitch(); - m_zeroWidthSpaceGlyph = 0; - m_missingGlyphData.fontData = this; - m_missingGlyphData.glyph = 0; - return; - } - - m_zeroWidthSpaceGlyph = glyphPageZero->glyphDataForCharacter(0).glyph; - - // Nasty hack to determine if we should round or ceil space widths. - // If the font is monospace or fake monospace we ceil to ensure that - // every character and the space are the same width. Otherwise we round. - m_spaceGlyph = glyphPageZero->glyphDataForCharacter(' ').glyph; - float width = widthForGlyph(m_spaceGlyph); - m_spaceWidth = width; - determinePitch(); - m_adjustedSpaceWidth = m_treatAsFixedPitch ? ceilf(width) : roundf(width); - - // Force the glyph for ZERO WIDTH SPACE to have zero width, unless it is shared with SPACE. - // Helvetica is an example of a non-zero width ZERO WIDTH SPACE glyph. - // See <http://bugs.webkit.org/show_bug.cgi?id=13178> - // Ask for the glyph for 0 to avoid paging in ZERO WIDTH SPACE. Control characters, including 0, - // are mapped to the ZERO WIDTH SPACE glyph. - if (m_zeroWidthSpaceGlyph == m_spaceGlyph) { - m_zeroWidthSpaceGlyph = 0; - LOG_ERROR("Font maps SPACE and ZERO WIDTH SPACE to the same glyph. Glyph width will not be overridden."); - } - - m_missingGlyphData.fontData = this; - m_missingGlyphData.glyph = 0; -} -#endif - -SimpleFontData::~SimpleFontData() -{ -#if ENABLE(SVG_FONTS) - if (!m_svgFontData || !m_svgFontData->svgFontFaceElement()) -#endif - platformDestroy(); - - if (!isCustomFont()) - GlyphPageTreeNode::pruneTreeFontData(this); -} - -const SimpleFontData* SimpleFontData::fontDataForCharacter(UChar32) const -{ - return this; -} - -bool SimpleFontData::isSegmented() const -{ - return false; -} - -SimpleFontData* SimpleFontData::brokenIdeographFontData() const -{ - if (!m_derivedFontData) - m_derivedFontData = DerivedFontData::create(isCustomFont()); - if (!m_derivedFontData->brokenIdeograph) { - m_derivedFontData->brokenIdeograph = new SimpleFontData(m_platformData, isCustomFont(), false); - m_derivedFontData->brokenIdeograph->m_orientation = Vertical; - m_derivedFontData->brokenIdeograph->m_isBrokenIdeographFont = true; - } - return m_derivedFontData->brokenIdeograph.get(); -} - -#ifndef NDEBUG -String SimpleFontData::description() const -{ - if (isSVGFont()) - return "[SVG font]"; - if (isCustomFont()) - return "[custom font]"; - - return platformData().description(); -} -#endif - -PassOwnPtr<SimpleFontData::DerivedFontData> SimpleFontData::DerivedFontData::create(bool forCustomFont) -{ - return adoptPtr(new DerivedFontData(forCustomFont)); -} - -SimpleFontData::DerivedFontData::~DerivedFontData() -{ - if (!forCustomFont) - return; - - if (smallCaps) - GlyphPageTreeNode::pruneTreeCustomFontData(smallCaps.get()); - if (emphasisMark) - GlyphPageTreeNode::pruneTreeCustomFontData(emphasisMark.get()); - if (brokenIdeograph) - GlyphPageTreeNode::pruneTreeCustomFontData(brokenIdeograph.get()); -} - -} // namespace WebCore |