Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/graphics/skia/FontCacheSkiaWin.cpp

Index: Source/core/platform/graphics/skia/FontCacheSkiaWin.cpp
diff --git a/Source/core/platform/graphics/skia/FontCacheSkiaWin.cpp b/Source/core/platform/graphics/skia/FontCacheSkiaWin.cpp
deleted file mode 100644
index 6046b723fd26a603a00bfb0632c75821807ef34c..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/skia/FontCacheSkiaWin.cpp
+++ /dev/null
@@ -1,219 +0,0 @@
-/*
- * Copyright (C) 2006, 2007 Apple Computer, Inc.
- * Copyright (c) 2006, 2007, 2008, 2009, 2012 Google 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:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * 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.
- *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
- * OWNER OR 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/FontCache.h"
-
-#include "RuntimeEnabledFeatures.h"
-#include "SkFontMgr.h"
-#include "SkTypeface_win.h"
-#include "core/platform/graphics/SimpleFontData.h"
-#include "core/platform/graphics/win/FontPlatformDataWin.h"
-#include "platform/fonts/FontDescription.h"
-#include "platform/fonts/FontFallbackWin.h"
-
-namespace WebCore {
-
-FontCache::FontCache()
-    : m_purgePreventCount(0)
-{
-    SkFontMgr* fontManager = 0;
-
-    // Prefer DirectWrite (if runtime feature is enabled) but fallback
-    // to GDI on platforms where DirectWrite is not supported.
-    if (RuntimeEnabledFeatures::directWriteEnabled())
-        fontManager = SkFontMgr_New_DirectWrite();
-
-    // Subpixel text positioning is not supported by the GDI backend.
-    m_useSubpixelPositioning = fontManager
-        ? RuntimeEnabledFeatures::subpixelFontScalingEnabled()
-        : false;
-
-    if (!fontManager)
-        fontManager = SkFontMgr_New_GDI();
-
-    m_fontManager = adoptPtr(fontManager);
-}
-
-static bool fontContainsCharacter(const FontPlatformData* fontData, const wchar_t* family, UChar32 character)
-{
-    SkPaint paint;
-    fontData->setupPaint(&paint);
-    paint.setTextEncoding(SkPaint::kUTF32_TextEncoding);
-
-    uint16_t glyph;
-    paint.textToGlyphs(&character, sizeof(character), &glyph);
-    return glyph;
-}
-
-// Given the desired base font, this will create a SimpleFontData for a specific
-// font that can be used to render the given range of characters.
-PassRefPtr<SimpleFontData> FontCache::platformFallbackForCharacter(const FontDescription& fontDescription, UChar32 character, const SimpleFontData*, bool)
-{
-    // FIXME: Consider passing fontDescription.dominantScript()
-    // to GetFallbackFamily here.
-    UScriptCode script;
-    const wchar_t* family = getFallbackFamily(character,
-        fontDescription.genericFamily(),
-        &script);
-    FontPlatformData* data = 0;
-    if (family)
-        data = getFontPlatformData(fontDescription,  AtomicString(family, wcslen(family)));
-
-    // Last resort font list : PanUnicode. CJK fonts have a pretty
-    // large repertoire. Eventually, we need to scan all the fonts
-    // on the system to have a Firefox-like coverage.
-    // Make sure that all of them are lowercased.
-    const static wchar_t* const cjkFonts[] = {
-        L"arial unicode ms",
-        L"ms pgothic",
-        L"simsun",
-        L"gulim",
-        L"pmingliu",
-        L"wenquanyi zen hei", // Partial CJK Ext. A coverage but more widely known to Chinese users.
-        L"ar pl shanheisun uni",
-        L"ar pl zenkai uni",
-        L"han nom a", // Complete CJK Ext. A coverage.
-        L"code2000" // Complete CJK Ext. A coverage.
-        // CJK Ext. B fonts are not listed here because it's of no use
-        // with our current non-BMP character handling because we use
-        // Uniscribe for it and that code path does not go through here.
-    };
-
-    const static wchar_t* const commonFonts[] = {
-        L"tahoma",
-        L"arial unicode ms",
-        L"lucida sans unicode",
-        L"microsoft sans serif",
-        L"palatino linotype",
-        // Six fonts below (and code2000 at the end) are not from MS, but
-        // once installed, cover a very wide range of characters.
-        L"dejavu serif",
-        L"dejavu sasns",
-        L"freeserif",
-        L"freesans",
-        L"gentium",
-        L"gentiumalt",
-        L"ms pgothic",
-        L"simsun",
-        L"gulim",
-        L"pmingliu",
-        L"code2000"
-    };
-
-    const wchar_t* const* panUniFonts = 0;
-    int numFonts = 0;
-    if (script == USCRIPT_HAN) {
-        panUniFonts = cjkFonts;
-        numFonts = WTF_ARRAY_LENGTH(cjkFonts);
-    } else {
-        panUniFonts = commonFonts;
-        numFonts = WTF_ARRAY_LENGTH(commonFonts);
-    }
-    // Font returned from getFallbackFamily may not cover |character|
-    // because it's based on script to font mapping. This problem is
-    // critical enough for non-Latin scripts (especially Han) to
-    // warrant an additional (real coverage) check with fontCotainsCharacter.
-    int i;
-    for (i = 0; (!data || !fontContainsCharacter(data, family, character)) && i < numFonts; ++i) {
-        family = panUniFonts[i];
-        data = getFontPlatformData(fontDescription, AtomicString(family, wcslen(family)));
-    }
-    // When i-th font (0-base) in |panUniFonts| contains a character and
-    // we get out of the loop, |i| will be |i + 1|. That is, if only the
-    // last font in the array covers the character, |i| will be numFonts.
-    // So, we have to use '<=" rather than '<' to see if we found a font
-    // covering the character.
-    if (i <= numFonts)
-        return fontDataFromFontPlatformData(data, DoNotRetain);
-
-    return 0;
-}
-
-static inline bool equalIgnoringCase(const AtomicString& a, const SkString& b)
-{
-    return equalIgnoringCase(a, AtomicString::fromUTF8(b.c_str()));
-}
-
-static bool typefacesMatchesFamily(const SkTypeface* tf, const AtomicString& family)
-{
-    SkTypeface::LocalizedStrings* actualFamilies = tf->createFamilyNameIterator();
-    bool matchesRequestedFamily = false;
-    SkTypeface::LocalizedString actualFamily;
-
-    while (actualFamilies->next(&actualFamily)) {
-        if (equalIgnoringCase(family, actualFamily.fString)) {
-            matchesRequestedFamily = true;
-            break;
-        }
-    }
-    actualFamilies->unref();
-
-    // getFamilyName may return a name not returned by the createFamilyNameIterator.
-    // Specifically in cases where Windows substitutes the font based on the
-    // HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes registry entries.
-    if (!matchesRequestedFamily) {
-        SkString familyName;
-        tf->getFamilyName(&familyName);
-        if (equalIgnoringCase(family, familyName))
-            matchesRequestedFamily = true;
-    }
-
-    return matchesRequestedFamily;
-}
-
-FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family, float fontSize)
-{
-    CString name;
-    RefPtr<SkTypeface> tf = createTypeface(fontDescription, family, name);
-    if (!tf)
-        return 0;
-
-    // Windows will always give us a valid pointer here, even if the face name
-    // is non-existent. We have to double-check and see if the family name was
-    // really used.
-    // FIXME: Do we need to use predefined fonts "guaranteed" to exist
-    // when we're running in layout-test mode?
-    if (!typefacesMatchesFamily(tf.get(), family)) {
-        return 0;
-    }
-
-    FontPlatformData* result = new FontPlatformData(tf,
-        name.data(),
-        fontSize,
-        fontDescription.weight() >= FontWeightBold && !tf->isBold() || fontDescription.isSyntheticBold(),
-        fontDescription.italic() && !tf->isItalic() || fontDescription.isSyntheticItalic(),
-        fontDescription.orientation(),
-        m_useSubpixelPositioning);
-    return result;
-}
-
-}