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Unified Diff: Source/core/platform/graphics/win/FontCacheWin.cpp

Issue 99103006: Moving GraphicsContext and dependencies from core to platform. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Final patch - fixes Android Created 7 years ago
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Index: Source/core/platform/graphics/win/FontCacheWin.cpp
diff --git a/Source/core/platform/graphics/win/FontCacheWin.cpp b/Source/core/platform/graphics/win/FontCacheWin.cpp
deleted file mode 100644
index d42303685602c7ae8e9f9fa6651299bd3fd83422..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/win/FontCacheWin.cpp
+++ /dev/null
@@ -1,594 +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 <unicode/uniset.h>
-#include "core/platform/graphics/SimpleFontData.h"
-#include "core/platform/graphics/win/FontPlatformDataWin.h"
-#include "platform/LayoutTestSupport.h"
-#include "platform/fonts/FontDescription.h"
-#include "platform/fonts/FontFallbackWin.h"
-#include "platform/win/HWndDC.h"
-#include "wtf/HashMap.h"
-#include "wtf/text/StringHash.h"
-
-#include <windows.h>
-#include <mlang.h>
-#include <objidl.h>
-
-using std::min;
-
-namespace WebCore
-{
-
-// When asked for a CJK font with a native name under a non-CJK locale or
-// asked for a CJK font with a Romanized name under a CJK locale,
-// |GetTextFace| (after |CreateFont*|) returns a 'bogus' value (e.g. Arial).
-// This is not consistent with what MSDN says !!
-// Therefore, before we call |CreateFont*|, we have to map a Romanized name to
-// the corresponding native name under a CJK locale and vice versa
-// under a non-CJK locale.
-// See the corresponding gecko bugs at
-// https://bugzilla.mozilla.org/show_bug.cgi?id=373952
-// https://bugzilla.mozilla.org/show_bug.cgi?id=231426
-static bool LookupAltName(const String& name, String& altName)
-{
- struct FontCodepage {
- const WCHAR* name;
- int codePage;
- };
-
- struct NamePair {
- const WCHAR* name;
- FontCodepage altNameCodepage;
- };
-
- const int japaneseCodepage = 932;
- const int simplifiedChineseCodepage = 936;
- const int koreanCodepage = 949;
- const int traditionalChineseCodepage = 950;
-
- // FIXME(jungshik) : This list probably covers 99% of cases.
- // To cover the remaining 1% and cut down the file size,
- // consider accessing 'NAME' table of a truetype font
- // using |GetFontData| and caching the mapping.
- // In the table below, the ASCII keys are all lower-cased for
- // case-insensitive matching.
- static const NamePair namePairs[] = {
- // ＭＳ Ｐゴシック, MS PGothic
- {L"\xFF2D\xFF33 \xFF30\x30B4\x30B7\x30C3\x30AF", {L"MS PGothic", japaneseCodepage}},
- {L"ms pgothic", {L"\xFF2D\xFF33 \xFF30\x30B4\x30B7\x30C3\x30AF", japaneseCodepage}},
- // ＭＳ Ｐ明朝, MS PMincho
- {L"\xFF2D\xFF33 \xFF30\x660E\x671D", {L"MS PMincho", japaneseCodepage}},
- {L"ms pmincho", {L"\xFF2D\xFF33 \xFF30\x660E\x671D", japaneseCodepage}},
- // ＭＳゴシック, MS Gothic
- {L"\xFF2D\xFF33 \x30B4\x30B7\x30C3\x30AF", {L"MS Gothic", japaneseCodepage}},
- {L"ms gothic", {L"\xFF2D\xFF33 \x30B4\x30B7\x30C3\x30AF", japaneseCodepage}},
- // ＭＳ 明朝, MS Mincho
- {L"\xFF2D\xFF33 \x660E\x671D", {L"MS Mincho", japaneseCodepage}},
- {L"ms mincho", {L"\xFF2D\xFF33 \x660E\x671D", japaneseCodepage}},
- // メイリオ, Meiryo
- {L"\x30E1\x30A4\x30EA\x30AA", {L"Meiryo", japaneseCodepage}},
- {L"meiryo", {L"\x30E1\x30A4\x30EA\x30AA", japaneseCodepage}},
- // 바탕, Batang
- {L"\xBC14\xD0D5", {L"Batang", koreanCodepage}},
- {L"batang", {L"\xBC14\xD0D5", koreanCodepage}},
- // 바탕체, Batangche
- {L"\xBC14\xD0D5\xCCB4", {L"Batangche", koreanCodepage}},
- {L"batangche", {L"\xBC14\xD0D5\xCCB4", koreanCodepage}},
- // 굴림, Gulim
- {L"\xAD74\xB9BC", {L"Gulim", koreanCodepage}},
- {L"gulim", {L"\xAD74\xB9BC", koreanCodepage}},
- // 굴림체, Gulimche
- {L"\xAD74\xB9BC\xCCB4", {L"Gulimche", koreanCodepage}},
- {L"gulimche", {L"\xAD74\xB9BC\xCCB4", koreanCodepage}},
- // 돋움, Dotum
- {L"\xB3CB\xC6C0", {L"Dotum", koreanCodepage}},
- {L"dotum", {L"\xB3CB\xC6C0", koreanCodepage}},
- // 돋움체, Dotumche
- {L"\xB3CB\xC6C0\xCCB4", {L"Dotumche", koreanCodepage}},
- {L"dotumche", {L"\xB3CB\xC6C0\xCCB4", koreanCodepage}},
- // 궁서, Gungsuh
- {L"\xAD81\xC11C", {L"Gungsuh", koreanCodepage}},
- {L"gungsuh", {L"\xAD81\xC11C", koreanCodepage}},
- // 궁서체, Gungsuhche
- {L"\xAD81\xC11C\xCCB4", {L"Gungsuhche", koreanCodepage}},
- {L"gungsuhche", {L"\xAD81\xC11C\xCCB4", koreanCodepage}},
- // 맑은 고딕, Malgun Gothic
- {L"\xB9D1\xC740 \xACE0\xB515", {L"Malgun Gothic", koreanCodepage}},
- {L"malgun gothic", {L"\xB9D1\xC740 \xACE0\xB515", koreanCodepage}},
- // 宋体, SimSun
- {L"\x5B8B\x4F53", {L"SimSun", simplifiedChineseCodepage}},
- {L"simsun", {L"\x5B8B\x4F53", simplifiedChineseCodepage}},
- // 宋体-ExtB, SimSun-ExtB
- {L"\x5B8B\x4F53-ExtB", {L"SimSun-ExtB", simplifiedChineseCodepage}},
- {L"simsun-extb", {L"\x5B8B\x4F53-extb", simplifiedChineseCodepage}},
- // 黑体, SimHei
- {L"\x9ED1\x4F53", {L"SimHei", simplifiedChineseCodepage}},
- {L"simhei", {L"\x9ED1\x4F53", simplifiedChineseCodepage}},
- // 新宋体, NSimSun
- {L"\x65B0\x5B8B\x4F53", {L"NSimSun", simplifiedChineseCodepage}},
- {L"nsimsun", {L"\x65B0\x5B8B\x4F53", simplifiedChineseCodepage}},
- // 微软雅黑, Microsoft Yahei
- {L"\x5FAE\x8F6F\x96C5\x9ED1", {L"Microsoft Yahei", simplifiedChineseCodepage}},
- {L"microsoft yahei", {L"\x5FAE\x8F6F\x96C5\x9ED1", simplifiedChineseCodepage}},
- // 仿宋, FangSong
- {L"\x4EFF\x5B8B", {L"FangSong", simplifiedChineseCodepage}},
- {L"fangsong", {L"\x4EFF\x5B8B", simplifiedChineseCodepage}},
- // 楷体, KaiTi
- {L"\x6977\x4F53", {L"KaiTi", simplifiedChineseCodepage}},
- {L"kaiti", {L"\x6977\x4F53", simplifiedChineseCodepage}},
- // 仿宋_GB2312, FangSong_GB2312
- {L"\x4EFF\x5B8B_GB2312", {L"FangSong_GB2312", simplifiedChineseCodepage}},
- {L"fangsong_gb2312", {L"\x4EFF\x5B8B_gb2312", simplifiedChineseCodepage}},
- // 楷体_GB2312, KaiTi_GB2312
- {L"\x6977\x4F53", {L"KaiTi_GB2312", simplifiedChineseCodepage}},
- {L"kaiti_gb2312", {L"\x6977\x4F53_gb2312", simplifiedChineseCodepage}},
- // 新細明體, PMingLiu
- {L"\x65B0\x7D30\x660E\x9AD4", {L"PMingLiu", traditionalChineseCodepage}},
- {L"pmingliu", {L"\x65B0\x7D30\x660E\x9AD4", traditionalChineseCodepage}},
- // 新細明體-ExtB, PMingLiu-ExtB
- {L"\x65B0\x7D30\x660E\x9AD4-ExtB", {L"PMingLiu-ExtB", traditionalChineseCodepage}},
- {L"pmingliu-extb", {L"\x65B0\x7D30\x660E\x9AD4-extb", traditionalChineseCodepage}},
- // 細明體, MingLiu
- {L"\x7D30\x660E\x9AD4", {L"MingLiu", traditionalChineseCodepage}},
- {L"mingliu", {L"\x7D30\x660E\x9AD4", traditionalChineseCodepage}},
- // 細明體-ExtB, MingLiu-ExtB
- {L"\x7D30\x660E\x9AD4-ExtB", {L"MingLiu-ExtB", traditionalChineseCodepage}},
- {L"mingliu-extb", {L"x65B0\x7D30\x660E\x9AD4-extb", traditionalChineseCodepage}},
- // 微軟正黑體, Microsoft JhengHei
- {L"\x5FAE\x8EDF\x6B63\x9ED1\x9AD4", {L"Microsoft JhengHei", traditionalChineseCodepage}},
- {L"microsoft jhengHei", {L"\x5FAE\x8EDF\x6B63\x9ED1\x9AD4", traditionalChineseCodepage}},
- // 標楷體, DFKai-SB
- {L"\x6A19\x6977\x9AD4", {L"DFKai-SB", traditionalChineseCodepage}},
- {L"dfkai-sb", {L"\x6A19\x6977\x9AD4", traditionalChineseCodepage}},
- // WenQuanYi Zen Hei
- {L"\x6587\x6cc9\x9a5b\x6b63\x9ed1", {L"WenQuanYi Zen Hei", traditionalChineseCodepage}},
- {L"wenquanyi zen hei", {L"\x6587\x6cc9\x9a5b\x6b63\x9ed1", traditionalChineseCodepage}},
- // WenQuanYi Zen Hei
- {L"\x6587\x6cc9\x9a7f\x6b63\x9ed1", {L"WenQuanYi Zen Hei", simplifiedChineseCodepage}},
- {L"wenquanyi zen hei", {L"\x6587\x6cc9\x9a7f\x6b63\x9ed1", simplifiedChineseCodepage}},
- // AR PL ShanHeiSun Uni,
- {L"\x6587\x9f0e\x0050\x004c\x7d30\x4e0a\x6d77\x5b8b\x0055\x006e\x0069",
- {L"AR PL ShanHeiSun Uni", traditionalChineseCodepage}},
- {L"ar pl shanheisun uni",
- {L"\x6587\x9f0e\x0050\x004c\x7d30\x4e0a\x6d77\x5b8b\x0055\x006e\x0069", traditionalChineseCodepage}},
- // AR PL ShanHeiSun Uni,
- {L"\x6587\x9f0e\x0050\x004c\x7ec6\x4e0a\x6d77\x5b8b\x0055\x006e\x0069",
- {L"AR PL ShanHeiSun Uni", simplifiedChineseCodepage}},
- {L"ar pl shanheisun uni",
- {L"\x6587\x9f0e\x0050\x004c\x7ec6\x4e0a\x6d77\x5b8b\x0055\x006e\x0069", simplifiedChineseCodepage}},
- // AR PL ZenKai Uni
- // Traditional Chinese and Simplified Chinese names are
- // identical.
- {L"\x6587\x0050\x004C\x4E2D\x6977\x0055\x006E\x0069", {L"AR PL ZenKai Uni", traditionalChineseCodepage}},
- {L"ar pl zenkai uni", {L"\x6587\x0050\x004C\x4E2D\x6977\x0055\x006E\x0069", traditionalChineseCodepage}},
- {L"\x6587\x0050\x004C\x4E2D\x6977\x0055\x006E\x0069", {L"AR PL ZenKai Uni", simplifiedChineseCodepage}},
- {L"ar pl zenkai uni", {L"\x6587\x0050\x004C\x4E2D\x6977\x0055\x006E\x0069", simplifiedChineseCodepage}},
- };
-
- typedef HashMap<String, const FontCodepage*> NameMap;
- static NameMap* fontNameMap = 0;
-
- if (!fontNameMap) {
- fontNameMap = new NameMap;
- for (size_t i = 0; i < WTF_ARRAY_LENGTH(namePairs); ++i)
- fontNameMap->set(String(namePairs[i].name), &(namePairs[i].altNameCodepage));
- }
-
- bool isAscii = false;
- String n;
- // use |lower| only for ASCII names
- // For non-ASCII names, we don't want to invoke an expensive
- // and unnecessary |lower|.
- if (name.containsOnlyASCII()) {
- isAscii = true;
- n = name.lower();
- } else
- n = name;
-
- NameMap::iterator iter = fontNameMap->find(n);
- if (iter == fontNameMap->end())
- return false;
-
- static int systemCp = ::GetACP();
- int fontCp = iter->value->codePage;
-
- if ((isAscii && systemCp == fontCp) || (!isAscii && systemCp != fontCp)) {
- altName = String(iter->value->name);
- return true;
- }
-
- return false;
-}
-
-static HFONT createFontIndirectAndGetWinName(const String& family, LOGFONT* winfont, String* winName)
-{
- unsigned len = family.copyTo(winfont->lfFaceName, 0, LF_FACESIZE - 1);
- winfont->lfFaceName[len] = '\0';
-
- HFONT hfont = CreateFontIndirect(winfont);
- if (!hfont)
- return 0;
-
- HWndDC dc(0);
- HGDIOBJ oldFont = static_cast<HFONT>(SelectObject(dc, hfont));
- WCHAR name[LF_FACESIZE];
- unsigned resultLength = GetTextFace(dc, LF_FACESIZE, name);
- if (resultLength > 0)
- resultLength--; // ignore the null terminator
-
- SelectObject(dc, oldFont);
- *winName = String(name, resultLength);
- return hfont;
-}
-
-// This maps font family names to their repertoires of supported Unicode
-// characters. Because it's family names rather than font faces we use
-// as keys, there might be edge cases where one face of a font family
-// has a different repertoire from another face of the same family.
-typedef HashMap<const wchar_t*, icu::UnicodeSet*> FontCmapCache;
-
-static bool fontContainsCharacter(const FontPlatformData* fontData,
- const wchar_t* family, UChar32 character)
-{
- // FIXME: For non-BMP characters, GetFontUnicodeRanges is of
- // no use. We have to read directly from the cmap table of a font.
- // Return true for now.
- if (character > 0xFFFF)
- return true;
-
- // This cache is just leaked on shutdown.
- static FontCmapCache* fontCmapCache = 0;
- if (!fontCmapCache)
- fontCmapCache = new FontCmapCache;
-
- HashMap<const wchar_t*, icu::UnicodeSet*>::iterator it = fontCmapCache->find(family);
- if (it != fontCmapCache->end())
- return it->value->contains(character);
-
- HFONT hfont = fontData->hfont();
- HWndDC hdc(0);
- HGDIOBJ oldFont = static_cast<HFONT>(SelectObject(hdc, hfont));
- int count = GetFontUnicodeRanges(hdc, 0);
- if (!count && FontPlatformData::ensureFontLoaded(hfont))
- count = GetFontUnicodeRanges(hdc, 0);
- if (!count) {
- WTF_LOG_ERROR("Unable to get the font unicode range after second attempt");
- SelectObject(hdc, oldFont);
- return true;
- }
-
- static Vector<char, 512>* gGlyphsetBuffer = 0;
- if (!gGlyphsetBuffer)
- gGlyphsetBuffer = new Vector<char, 512>();
- gGlyphsetBuffer->resize(GetFontUnicodeRanges(hdc, 0));
- GLYPHSET* glyphset = reinterpret_cast<GLYPHSET*>(gGlyphsetBuffer->data());
- // In addition, refering to the OS/2 table and converting the codepage list
- // to the coverage map might be faster.
- count = GetFontUnicodeRanges(hdc, glyphset);
- ASSERT(count > 0);
- SelectObject(hdc, oldFont);
-
- // FIXME: consider doing either of the following two:
- // 1) port back ICU 4.0's faster look-up code for UnicodeSet
- // 2) port Mozilla's CompressedCharMap or gfxSparseBitset
- unsigned i = 0;
- icu::UnicodeSet* cmap = new icu::UnicodeSet;
- while (i < glyphset->cRanges) {
- WCHAR start = glyphset->ranges[i].wcLow;
- cmap->add(start, start + glyphset->ranges[i].cGlyphs - 1);
- i++;
- }
- cmap->freeze();
- // We don't lowercase |family| because all of them are under our control
- // and they're already lowercased.
- fontCmapCache->set(family, cmap);
- return cmap->contains(character);
-}
-
-// Tries the given font and save it |outFontFamilyName| if it succeeds.
-PassRefPtr<SimpleFontData> FontCache::fontDataFromDescriptionAndLogFont(const FontDescription& fontDescription, ShouldRetain shouldRetain, const LOGFONT& font, wchar_t* outFontFamilyName)
-{
- RefPtr<SimpleFontData> fontData = getFontData(fontDescription, font.lfFaceName, false, shouldRetain);
- if (fontData)
- memcpy(outFontFamilyName, font.lfFaceName, sizeof(font.lfFaceName));
- return fontData.release();
-}
-
-static LONG toGDIFontWeight(FontWeight fontWeight)
-{
- static LONG gdiFontWeights[] = {
- FW_THIN, // FontWeight100
- FW_EXTRALIGHT, // FontWeight200
- FW_LIGHT, // FontWeight300
- FW_NORMAL, // FontWeight400
- FW_MEDIUM, // FontWeight500
- FW_SEMIBOLD, // FontWeight600
- FW_BOLD, // FontWeight700
- FW_EXTRABOLD, // FontWeight800
- FW_HEAVY // FontWeight900
- };
- return gdiFontWeights[fontWeight];
-}
-
-static void FillLogFont(const FontDescription& fontDescription, LOGFONT* winfont)
-{
- // The size here looks unusual. The negative number is intentional.
- // Unlike WebKit trunk, we don't multiply the size by 32. That seems to be
- // some kind of artifact of their CG backend, or something.
- winfont->lfHeight = -fontDescription.computedPixelSize();
- winfont->lfWidth = 0;
- winfont->lfEscapement = 0;
- winfont->lfOrientation = 0;
- winfont->lfUnderline = false;
- winfont->lfStrikeOut = false;
- winfont->lfCharSet = DEFAULT_CHARSET;
- winfont->lfOutPrecision = OUT_TT_ONLY_PRECIS;
- winfont->lfQuality = isRunningLayoutTest() ? NONANTIALIASED_QUALITY : DEFAULT_QUALITY; // Honor user's desktop settings.
- winfont->lfPitchAndFamily = DEFAULT_PITCH | FF_DONTCARE;
- winfont->lfItalic = fontDescription.italic();
- winfont->lfWeight = toGDIFontWeight(fontDescription.weight());
-}
-
-struct GetLastResortFallbackFontProcData {
- GetLastResortFallbackFontProcData(FontCache* fontCache, const FontDescription* fontDescription, FontCache::ShouldRetain shouldRetain, wchar_t* fontName)
- : m_fontCache(fontCache)
- , m_fontDescription(fontDescription)
- , m_shouldRetain(shouldRetain)
- , m_fontName(fontName)
- , m_fontData(0)
- {
- }
-
- FontCache* m_fontCache;
- const FontDescription* m_fontDescription;
- FontCache::ShouldRetain m_shouldRetain;
- wchar_t* m_fontName;
- RefPtr<SimpleFontData> m_fontData;
-};
-
-static int CALLBACK getLastResortFallbackFontProc(const LOGFONT* logFont, const TEXTMETRIC* metrics, DWORD fontType, LPARAM lParam)
-{
- GetLastResortFallbackFontProcData* procData = reinterpret_cast<GetLastResortFallbackFontProcData*>(lParam);
- procData->m_fontData = procData->m_fontCache->fontDataFromDescriptionAndLogFont(*procData->m_fontDescription, procData->m_shouldRetain, *logFont, procData->m_fontName);
- return !procData->m_fontData;
-}
-
-void FontCache::platformInit()
-{
- // Not needed on Windows.
-}
-
-// 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 c, const SimpleFontData*, bool)
-{
- // FIXME: We should fix getFallbackFamily to take a UChar32
- // and remove this split-to-UChar16 code.
- UChar codeUnits[2];
- int codeUnitsLength;
- if (inputC <= 0xFFFF) {
- codeUnits[0] = inputC;
- codeUnitsLength = 1;
- } else {
- codeUnits[0] = U16_LEAD(inputC);
- codeUnits[1] = U16_TRAIL(inputC);
- codeUnitsLength = 2;
- }
-
- // FIXME: Consider passing fontDescription.dominantScript()
- // to GetFallbackFamily here.
- FontDescription fontDescription = fontDescription;
- UChar32 c;
- UScriptCode script;
- const wchar_t* family = getFallbackFamily(codeUnits, codeUnitsLength, fontDescription.genericFamily(), &c, &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 |characters|
- // 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, c)) && 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 fontDataFromPlatformData(data, DoNotRetain);
-
- return 0;
-
-}
-
-PassRefPtr<SimpleFontData> FontCache::getLastResortFallbackFont(const FontDescription& description, ShouldRetain shouldRetain)
-{
- FontDescription::GenericFamilyType generic = description.genericFamily();
-
- // FIXME: Would be even better to somehow get the user's default font here.
- // For now we'll pick the default that the user would get without changing
- // any prefs.
- DEFINE_STATIC_LOCAL(AtomicString, timesStr, "Times New Roman");
- DEFINE_STATIC_LOCAL(AtomicString, courierStr, "Courier New");
- DEFINE_STATIC_LOCAL(AtomicString, arialStr, "Arial");
-
- AtomicString& fontStr = timesStr;
- if (generic == FontDescription::SansSerifFamily)
- fontStr = arialStr;
- else if (generic == FontDescription::MonospaceFamily)
- fontStr = courierStr;
-
- RefPtr<SimpleFontData> simpleFont = getFontData(description, fontStr, false, shouldRetain);
- if (simpleFont)
- return simpleFont.release();
-
- // Fall back to system fonts as Win Safari does because this function must
- // return a valid font. Once we find a valid system font, we save its name
- // to a static variable and use it to prevent trying system fonts again.
- static wchar_t fallbackFontName[LF_FACESIZE] = {0};
- if (fallbackFontName[0])
- return getFontData(description, fallbackFontName, false, shouldRetain);
-
- // Fall back to the DEFAULT_GUI_FONT if no known Unicode fonts are available.
- if (HFONT defaultGUIFont = static_cast<HFONT>(GetStockObject(DEFAULT_GUI_FONT))) {
- LOGFONT defaultGUILogFont;
- GetObject(defaultGUIFont, sizeof(defaultGUILogFont), &defaultGUILogFont);
- if (simpleFont = fontDataFromDescriptionAndLogFont(description, shouldRetain, defaultGUILogFont, fallbackFontName))
- return simpleFont.release();
- }
-
- // Fall back to Non-client metrics fonts.
- NONCLIENTMETRICS nonClientMetrics = {0};
- nonClientMetrics.cbSize = sizeof(nonClientMetrics);
- if (SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(nonClientMetrics), &nonClientMetrics, 0)) {
- if (simpleFont = fontDataFromDescriptionAndLogFont(description, shouldRetain, nonClientMetrics.lfMessageFont, fallbackFontName))
- return simpleFont.release();
- if (simpleFont = fontDataFromDescriptionAndLogFont(description, shouldRetain, nonClientMetrics.lfMenuFont, fallbackFontName))
- return simpleFont.release();
- if (simpleFont = fontDataFromDescriptionAndLogFont(description, shouldRetain, nonClientMetrics.lfStatusFont, fallbackFontName))
- return simpleFont.release();
- if (simpleFont = fontDataFromDescriptionAndLogFont(description, shouldRetain, nonClientMetrics.lfCaptionFont, fallbackFontName))
- return simpleFont.release();
- if (simpleFont = fontDataFromDescriptionAndLogFont(description, shouldRetain, nonClientMetrics.lfSmCaptionFont, fallbackFontName))
- return simpleFont.release();
- }
-
- // Fall back to all the fonts installed in this PC. When a font has a
- // localized name according to the system locale as well as an English name,
- // both GetTextFace() and EnumFontFamilies() return the localized name. So,
- // FontCache::createFontPlatformData() does not filter out the fonts
- // returned by this EnumFontFamilies() call.
- HWndDC dc(0);
- if (dc) {
- GetLastResortFallbackFontProcData procData(this, &description, shouldRetain, fallbackFontName);
- EnumFontFamilies(dc, 0, getLastResortFallbackFontProc, reinterpret_cast<LPARAM>(&procData));
-
- if (procData.m_fontData)
- return procData.m_fontData.release();
- }
-
- ASSERT_NOT_REACHED();
- return 0;
-}
-
-FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family, float fontSize)
-{
- LOGFONT winfont = {0};
- FillLogFont(fontDescription, &winfont);
-
- // 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.
- String winName;
- HFONT hfont = createFontIndirectAndGetWinName(family, &winfont, &winName);
- if (!hfont)
- return 0;
-
- // FIXME: Do we need to use predefined fonts "guaranteed" to exist
- // when we're running in layout-test mode?
- if (!equalIgnoringCase(family, winName)) {
- // For CJK fonts with both English and native names,
- // GetTextFace returns a native name under the font's "locale"
- // and an English name under other locales regardless of
- // lfFaceName field of LOGFONT. As a result, we need to check
- // if a font has an alternate name. If there is, we need to
- // compare it with what's requested in the first place.
- String altName;
- if (!LookupAltName(family, altName) || !equalIgnoringCase(altName, winName)) {
- DeleteObject(hfont);
- return 0;
- }
- }
-
- return new FontPlatformData(hfont, fontSize, fontDescription.orientation());
-}
-
-}
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