Reland "Change FontFallbackWin to use FamilyNameIterator"

Source/platform/fonts/win/FontFallbackWin.cpp

 /*
  * Copyright (c) 2006, 2007, 2008, 2009, 2010, 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
@@ skipping 13 matching lines @@
  * 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 "platform/fonts/win/FontFallbackWin.h"
 
-#include "platform/win/HWndDC.h"
+#include "SkTypeface.h"
 #include "wtf/HashMap.h"
 #include "wtf/text/StringHash.h"
 #include "wtf/text/WTFString.h"
 #include <limits>
 #include <unicode/locid.h>
 #include <unicode/uchar.h>
 
 namespace WebCore {
 
 namespace {
 
-bool isFontPresent(const UChar* fontName)
+static inline bool isFontPresent(const UChar* fontName)
 {
-    HFONT hfont = CreateFont(12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, fontName);
-    if (!hfont)
+    String family = fontName;
+    RefPtr<SkTypeface> tf = adoptRef(SkTypeface::CreateFromName(family.utf8().data(), SkTypeface::kNormal));
+    if (!tf)
         return false;
-    HWndDC dc(0);
-    HGDIOBJ oldFont = static_cast<HFONT>(SelectObject(dc, hfont));
-    WCHAR actualFontName[LF_FACESIZE];
-    GetTextFace(dc, LF_FACESIZE, actualFontName);
-    actualFontName[LF_FACESIZE - 1] = 0;
-    SelectObject(dc, oldFont);
-    DeleteObject(hfont);
-    // We don't have to worry about East Asian fonts with locale-dependent
-    // names here for now.
-    // FIXME: Why not?
-    return !wcscmp(fontName, actualFontName);
+
+    SkTypeface::LocalizedStrings* actualFamilies = tf->createFamilyNameIterator();
+    bool matchesRequestedFamily = false;
+    SkTypeface::LocalizedString actualFamily;
+    while (actualFamilies->next(&actualFamily)) {
+        if (equalIgnoringCase(family, AtomicString::fromUTF8(actualFamily.fString.c_str()))) {
+            matchesRequestedFamily = true;
+            break;
+        }
+    }
+    actualFamilies->unref();
+
+    return matchesRequestedFamily;
 }
 
 // A simple mapping from UScriptCode to family name. This is a sparse array,
 // which works well since the range of UScriptCode values is small.
 typedef const UChar* ScriptToFontMap[USCRIPT_CODE_LIMIT];
 
 void initializeScriptFontMap(ScriptToFontMap& scriptFontMap)
 {
     struct FontMap {
         UScriptCode script;
@@ skipping 267 matching lines @@
         U16_NEXT(characters, i, length, ucs4);
         script = getScript(ucs4);
     }
 
     const UChar* family = getFallbackFamily(ucs4, generic, 0);
 
     return family;
 }
 
 } // namespace WebCore