Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/graphics/SimpleFontData.cpp

Index: Source/core/platform/graphics/SimpleFontData.cpp
diff --git a/Source/core/platform/graphics/SimpleFontData.cpp b/Source/core/platform/graphics/SimpleFontData.cpp
deleted file mode 100644
index 41f82b70812c1fd1d64a22c36b4bde49072017b2..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/SimpleFontData.cpp
+++ /dev/null
@@ -1,268 +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 "core/platform/graphics/SimpleFontData.h"
-
-
-#include "wtf/MathExtras.h"
-
-using namespace std;
-
-namespace WebCore {
-
-const float smallCapsFontSizeMultiplier = 0.7f;
-const float emphasisMarkFontSizeMultiplier = 0.5f;
-
-SimpleFontData::SimpleFontData(const FontPlatformData& platformData, PassRefPtr<CustomFontData> customData, bool isTextOrientationFallback)
-    : m_maxCharWidth(-1)
-    , m_avgCharWidth(-1)
-    , m_platformData(platformData)
-    , m_treatAsFixedPitch(false)
-    , m_isTextOrientationFallback(isTextOrientationFallback)
-    , m_isBrokenIdeographFallback(false)
-#if ENABLE(OPENTYPE_VERTICAL)
-    , m_verticalData(0)
-#endif
-    , m_hasVerticalGlyphs(false)
-    , m_customFontData(customData)
-{
-    platformInit();
-    platformGlyphInit();
-    platformCharWidthInit();
-#if ENABLE(OPENTYPE_VERTICAL)
-    if (platformData.orientation() == Vertical && !isTextOrientationFallback) {
-        m_verticalData = platformData.verticalData();
-        m_hasVerticalGlyphs = m_verticalData.get() && m_verticalData->hasVerticalMetrics();
-    }
-#endif
-}
-
-SimpleFontData::SimpleFontData(PassRefPtr<CustomFontData> customData, float fontSize, bool syntheticBold, bool syntheticItalic)
-    : m_platformData(FontPlatformData(fontSize, syntheticBold, syntheticItalic))
-    , m_treatAsFixedPitch(false)
-    , m_isTextOrientationFallback(false)
-    , m_isBrokenIdeographFallback(false)
-#if ENABLE(OPENTYPE_VERTICAL)
-    , m_verticalData(0)
-#endif
-    , m_hasVerticalGlyphs(false)
-    , m_customFontData(customData)
-{
-    if (m_customFontData)
-        m_customFontData->initializeFontData(this, fontSize);
-}
-
-// 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->glyphForCharacter(digitZeroChar);
-        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_fontMetrics.xHeight();
-
-    if (m_maxCharWidth <= 0.f)
-        m_maxCharWidth = max(m_avgCharWidth, m_fontMetrics.floatAscent());
-}
-
-void SimpleFontData::platformGlyphInit()
-{
-    GlyphPage* glyphPageZero = GlyphPageTreeNode::getRootChild(this, 0)->page();
-    if (!glyphPageZero) {
-        WTF_LOG_ERROR("Failed to get glyph page zero.");
-        m_spaceGlyph = 0;
-        m_spaceWidth = 0;
-        m_zeroGlyph = 0;
-        m_adjustedSpaceWidth = 0;
-        determinePitch();
-        m_zeroWidthSpaceGlyph = 0;
-        m_missingGlyphData.fontData = this;
-        m_missingGlyphData.glyph = 0;
-        return;
-    }
-
-    m_zeroWidthSpaceGlyph = glyphPageZero->glyphForCharacter(0);
-
-    // 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->glyphForCharacter(' ');
-    float width = widthForGlyph(m_spaceGlyph);
-    m_spaceWidth = width;
-    m_zeroGlyph = glyphPageZero->glyphForCharacter('0');
-    m_fontMetrics.setZeroWidth(widthForGlyph(m_zeroGlyph));
-    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;
-        WTF_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;
-}
-
-SimpleFontData::~SimpleFontData()
-{
-    if (!isSVGFont())
-        platformDestroy();
-
-    if (isCustomFont())
-        GlyphPageTreeNode::pruneTreeCustomFontData(this);
-    else
-        GlyphPageTreeNode::pruneTreeFontData(this);
-}
-
-const SimpleFontData* SimpleFontData::fontDataForCharacter(UChar32) const
-{
-    return this;
-}
-
-Glyph SimpleFontData::glyphForCharacter(UChar32 character) const
-{
-    GlyphPageTreeNode* node = GlyphPageTreeNode::getRootChild(this, character / GlyphPage::size);
-    return node->page() ? node->page()->glyphAt(character % GlyphPage::size) : 0;
-}
-
-bool SimpleFontData::isSegmented() const
-{
-    return false;
-}
-
-PassRefPtr<SimpleFontData> SimpleFontData::verticalRightOrientationFontData() const
-{
-    if (!m_derivedFontData)
-        m_derivedFontData = DerivedFontData::create(isCustomFont());
-    if (!m_derivedFontData->verticalRightOrientation) {
-        FontPlatformData verticalRightPlatformData(m_platformData);
-        verticalRightPlatformData.setOrientation(Horizontal);
-        m_derivedFontData->verticalRightOrientation = create(verticalRightPlatformData, isCustomFont() ? CustomFontData::create(false): 0, true);
-    }
-    return m_derivedFontData->verticalRightOrientation;
-}
-
-PassRefPtr<SimpleFontData> SimpleFontData::uprightOrientationFontData() const
-{
-    if (!m_derivedFontData)
-        m_derivedFontData = DerivedFontData::create(isCustomFont());
-    if (!m_derivedFontData->uprightOrientation)
-        m_derivedFontData->uprightOrientation = create(m_platformData, isCustomFont() ? CustomFontData::create(false): 0, true);
-    return m_derivedFontData->uprightOrientation;
-}
-
-PassRefPtr<SimpleFontData> SimpleFontData::smallCapsFontData(const FontDescription& fontDescription) const
-{
-    if (!m_derivedFontData)
-        m_derivedFontData = DerivedFontData::create(isCustomFont());
-    if (!m_derivedFontData->smallCaps)
-        m_derivedFontData->smallCaps = createScaledFontData(fontDescription, smallCapsFontSizeMultiplier);
-
-    return m_derivedFontData->smallCaps;
-}
-
-PassRefPtr<SimpleFontData> SimpleFontData::emphasisMarkFontData(const FontDescription& fontDescription) const
-{
-    if (!m_derivedFontData)
-        m_derivedFontData = DerivedFontData::create(isCustomFont());
-    if (!m_derivedFontData->emphasisMark)
-        m_derivedFontData->emphasisMark = createScaledFontData(fontDescription, emphasisMarkFontSizeMultiplier);
-
-    return m_derivedFontData->emphasisMark;
-}
-
-PassRefPtr<SimpleFontData> SimpleFontData::brokenIdeographFontData() const
-{
-    if (!m_derivedFontData)
-        m_derivedFontData = DerivedFontData::create(isCustomFont());
-    if (!m_derivedFontData->brokenIdeograph) {
-        m_derivedFontData->brokenIdeograph = create(m_platformData, isCustomFont() ? CustomFontData::create(false): 0);
-        m_derivedFontData->brokenIdeograph->m_isBrokenIdeographFallback = true;
-    }
-    return m_derivedFontData->brokenIdeograph;
-}
-
-#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());
-    if (verticalRightOrientation)
-        GlyphPageTreeNode::pruneTreeCustomFontData(verticalRightOrientation.get());
-    if (uprightOrientation)
-        GlyphPageTreeNode::pruneTreeCustomFontData(uprightOrientation.get());
-}
-
-PassRefPtr<SimpleFontData> SimpleFontData::createScaledFontData(const FontDescription& fontDescription, float scaleFactor) const
-{
-    // FIXME: Support scaled SVG fonts. Given that SVG is scalable in general this should be achievable.
-    if (isSVGFont())
-        return 0;
-
-    return platformCreateScaledFontData(fontDescription, scaleFactor);
-}
-
-} // namespace WebCore