Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/graphics/FontFallbackList.cpp

Index: Source/core/platform/graphics/FontFallbackList.cpp
diff --git a/Source/core/platform/graphics/FontFallbackList.cpp b/Source/core/platform/graphics/FontFallbackList.cpp
deleted file mode 100644
index c8451d3294e4a1dd58173b336c2713a4c993819e..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/FontFallbackList.cpp
+++ /dev/null
@@ -1,207 +0,0 @@
-/*
- * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
- *
- * 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/FontFallbackList.h"
-
-#include "FontFamilyNames.h"
-#include "core/platform/graphics/FontCache.h"
-#include "core/platform/graphics/SegmentedFontData.h"
-#include "platform/fonts/FontDescription.h"
-#include "platform/fonts/FontFamily.h"
-
-namespace WebCore {
-
-FontFallbackList::FontFallbackList()
-    : m_pageZero(0)
-    , m_cachedPrimarySimpleFontData(0)
-    , m_fontSelector(0)
-    , m_fontSelectorVersion(0)
-    , m_familyIndex(0)
-    , m_generation(fontCache()->generation())
-    , m_pitch(UnknownPitch)
-    , m_loadingCustomFonts(false)
-{
-}
-
-void FontFallbackList::invalidate(PassRefPtr<FontSelector> fontSelector)
-{
-    releaseFontData();
-    m_fontList.clear();
-    m_pageZero = 0;
-    m_pages.clear();
-    m_cachedPrimarySimpleFontData = 0;
-    m_familyIndex = 0;
-    m_pitch = UnknownPitch;
-    m_loadingCustomFonts = false;
-    m_fontSelector = fontSelector;
-    m_fontSelectorVersion = m_fontSelector ? m_fontSelector->version() : 0;
-    m_generation = fontCache()->generation();
-    m_widthCache.clear();
-}
-
-void FontFallbackList::releaseFontData()
-{
-    unsigned numFonts = m_fontList.size();
-    for (unsigned i = 0; i < numFonts; ++i) {
-        if (!m_fontList[i]->isCustomFont()) {
-            ASSERT(!m_fontList[i]->isSegmented());
-            fontCache()->releaseFontData(static_cast<const SimpleFontData*>(m_fontList[i].get()));
-        }
-    }
-}
-
-void FontFallbackList::determinePitch(const FontDescription& fontDescription) const
-{
-    const FontData* fontData = primaryFontData(fontDescription);
-    if (!fontData->isSegmented())
-        m_pitch = static_cast<const SimpleFontData*>(fontData)->pitch();
-    else {
-        const SegmentedFontData* segmentedFontData = static_cast<const SegmentedFontData*>(fontData);
-        unsigned numRanges = segmentedFontData->numRanges();
-        if (numRanges == 1 && segmentedFontData->rangeAt(0).isEntireRange())
-            m_pitch = segmentedFontData->rangeAt(0).fontData()->pitch();
-        else
-            m_pitch = VariablePitch;
-    }
-}
-
-bool FontFallbackList::loadingCustomFonts() const
-{
-    if (m_loadingCustomFonts)
-        return true;
-
-    unsigned numFonts = m_fontList.size();
-    for (unsigned i = 0; i < numFonts; ++i) {
-        if (m_fontList[i]->isCustomFont() && m_fontList[i]->isLoading()) {
-            m_loadingCustomFonts = true;
-            return true;
-        }
-    }
-    return false;
-}
-
-const FontData* FontFallbackList::primaryFontData(const FontDescription& fontDescription) const
-{
-    for (unsigned fontIndex = 0; ; ++fontIndex) {
-        const FontData* fontData = fontDataAt(fontDescription, fontIndex);
-        if (!fontData) {
-            // All fonts are custom fonts and are loading. Return the first FontData.
-            // FIXME: Correct fallback to the default font.
-            return fontDataAt(fontDescription, 0);
-        }
-
-        // When a custom font is loading, we should use the correct fallback font to layout the text.
-        // Here skip the temporary font for the loading custom font which may not act as the correct fallback font.
-        if (!fontData->isLoadingFallback())
-            return fontData;
-
-        // Begin to load the first custom font if needed.
-        if (!fontIndex) {
-            const SimpleFontData* simpleFontData = fontData->fontDataForCharacter(' ');
-            if (simpleFontData && simpleFontData->customFontData())
-                simpleFontData->customFontData()->beginLoadIfNeeded();
-        }
-    }
-}
-
-PassRefPtr<FontData> FontFallbackList::getFontData(const FontDescription& fontDescription, int& familyIndex) const
-{
-    RefPtr<FontData> result;
-
-    int startIndex = familyIndex;
-    const FontFamily* startFamily = &fontDescription.family();
-    for (int i = 0; startFamily && i < startIndex; i++)
-        startFamily = startFamily->next();
-    const FontFamily* currFamily = startFamily;
-    while (currFamily && !result) {
-        familyIndex++;
-        if (currFamily->family().length()) {
-            if (m_fontSelector)
-                result = m_fontSelector->getFontData(fontDescription, currFamily->family());
-
-            if (!result)
-                result = fontCache()->getFontData(fontDescription, currFamily->family());
-        }
-        currFamily = currFamily->next();
-    }
-
-    if (!currFamily)
-        familyIndex = cAllFamiliesScanned;
-
-    if (result || startIndex)
-        return result.release();
-
-    // If it's the primary font that we couldn't find, we try the following. In all other cases, we will
-    // just use per-character system fallback.
-
-    if (m_fontSelector) {
-        // Try the user's preferred standard font.
-        if (RefPtr<FontData> data = m_fontSelector->getFontData(fontDescription, FontFamilyNames::webkit_standard))
-            return data.release();
-    }
-
-    // Still no result. Hand back our last resort fallback font.
-    return fontCache()->getLastResortFallbackFont(fontDescription);
-}
-
-
-const FontData* FontFallbackList::fontDataAt(const FontDescription& fontDescription, unsigned realizedFontIndex) const
-{
-    if (realizedFontIndex < m_fontList.size())
-        return m_fontList[realizedFontIndex].get(); // This fallback font is already in our list.
-
-    // Make sure we're not passing in some crazy value here.
-    ASSERT(realizedFontIndex == m_fontList.size());
-
-    if (m_familyIndex == cAllFamiliesScanned)
-        return 0;
-
-    // Ask the font cache for the font data.
-    // We are obtaining this font for the first time.  We keep track of the families we've looked at before
-    // in |m_familyIndex|, so that we never scan the same spot in the list twice.  getFontData will adjust our
-    // |m_familyIndex| as it scans for the right font to make.
-    ASSERT(fontCache()->generation() == m_generation);
-    RefPtr<FontData> result = getFontData(fontDescription, m_familyIndex);
-    if (result) {
-        m_fontList.append(result);
-        if (result->isLoading())
-            m_loadingCustomFonts = true;
-    }
-    return result.get();
-}
-
-void FontFallbackList::setPlatformFont(const FontPlatformData& platformData)
-{
-    m_familyIndex = cAllFamiliesScanned;
-    ASSERT(fontCache()->generation() == m_generation);
-    RefPtr<FontData> fontData = fontCache()->fontDataFromFontPlatformData(&platformData);
-    m_fontList.append(fontData);
-}
-
-}