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 |
new file mode 100644 |
index 0000000000000000000000000000000000000000..1d504f8325435a898113522cad8a9ccf79f2eab7 |
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+++ b/Source/core/platform/graphics/skia/FontCacheSkiaWin.cpp |
@@ -0,0 +1,190 @@ |
+/* |
+ * 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 "core/platform/NotImplemented.h" |
+#include "core/platform/graphics/Font.h" |
+#include "core/platform/graphics/SimpleFontData.h" |
+#include "core/platform/graphics/chromium/FontPlatformDataChromiumWin.h" |
+#include "core/platform/graphics/chromium/FontUtilsChromiumWin.h" |
+ |
+namespace WebCore { |
+ |
+static bool fontContainsCharacter(const FontPlatformData* fontData, const wchar_t* family, UChar32 character) |
+{ |
+ char characters[2] = {character, 0}; |
+ return fontData->typeface()->charsToGlyphs(characters, SkTypeface::kUTF32_Encoding, 0, 1) == 1; |
+} |
+ |
+// 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::getFontDataForCharacter(const Font& font, UChar32 inputC) |
+{ |
+ // 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 = font.fontDescription(); |
+ UChar32 c; |
+ UScriptCode script; |
+ const wchar_t* family = getFallbackFamily(codeUnits, codeUnitsLength, fontDescription.genericFamily(), &c, &script); |
+ FontPlatformData* data = 0; |
+ if (family) |
+ data = getFontResourcePlatformData(font.fontDescription(), AtomicString(family, wcslen(family)), false); |
+ |
+ // 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 = getFontResourcePlatformData(font.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 getFontResourceData(data, DoNotRetain); |
+ |
+ return 0; |
+} |
+ |
+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.c_str())) { |
+ matchesRequestedFamily = true; |
+ break; |
+ } |
+ } |
+ actualFamilies->unref(); |
+ |
+ return matchesRequestedFamily; |
+} |
+ |
+FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family) |
+{ |
+ CString name; |
+ 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, family)) { |
+ tf->unref(); |
+ return 0; |
+ } |
+ |
+ FontPlatformData* result = new FontPlatformData(tf, |
+ name.data(), |
+ fontDescription.computedSize(), |
+ fontDescription.weight() >= FontWeightBold && !tf->isBold(), |
+ fontDescription.italic() && !tf->isItalic(), |
+ fontDescription.orientation()); |
+ tf->unref(); |
+ return result; |
+} |
+ |
+} |