[Qt] Add WOFF support when using zlib

https://bugs.webkit.org/show_bug.cgi?id=112805
http://trac.webkit.org/r147020

Reviewed by Allan Sandfeld Jensen.

Covered by existing test:
fast/css/font-face-woff.html

* Target.pri: Conditional inclusion of WOFFFileFormat
* platform/graphics/qt/FontCustomPlatformDataQt.cpp:
(WebCore::createFontCustomPlatformData): Try to unpack WOFF data, otherwise spit out a warning and bail.
(WebCore::FontCustomPlatformData::supportsFormat): accept WOFF webfonts if USE(ZLIB).

Change-Id: I003cdffa3dcd3eb022ae47db30fdd65ebff3952b
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 26 insertions, 1 deletions

diff --git a/Source/WebCore/platform/graphics/qt/FontCustomPlatformDataQt.cpp b/Source/WebCore/platform/graphics/qt/FontCustomPlatformDataQt.cpp
index 2be38550e..5c36380d2 100644
--- a/Source/WebCore/platform/graphics/qt/FontCustomPlatformDataQt.cpp
+++ b/Source/WebCore/platform/graphics/qt/FontCustomPlatformDataQt.cpp
@@ -24,6 +24,9 @@
 
 #include "FontPlatformData.h"
 #include "SharedBuffer.h"
+#if USE(ZLIB)
+#include "WOFFFileFormat.h"
+#endif
 #include <QStringList>
 
 namespace WebCore {
@@ -39,7 +42,25 @@ FontCustomPlatformData* createFontCustomPlatformData(SharedBuffer* buffer)
 {
     ASSERT_ARG(buffer, buffer);
 
+#if USE(ZLIB)
+    RefPtr<SharedBuffer> sfntBuffer;
+    if (isWOFF(buffer)) {
+        Vector<char> sfnt;
+        if (!convertWOFFToSfnt(buffer, sfnt))
+            return 0;
+
+        sfntBuffer = SharedBuffer::adoptVector(sfnt);
+        buffer = sfntBuffer.get();
+    }
+#endif // USE(ZLIB)
+
     const QByteArray fontData(buffer->data(), buffer->size());
+#if !USE(ZLIB)
+    if (fontData.startsWith("wOFF")) {
+        qWarning("WOFF support requires QtWebKit to be built with zlib support.");
+        return 0;
+    }
+#endif // !USE(ZLIB)
     // Pixel size doesn't matter at this point, it is set in FontCustomPlatformData::fontPlatformData.
     QRawFont rawFont(fontData, /*pixelSize = */0, QFont::PreferDefaultHinting);
     if (!rawFont.isValid())
@@ -52,7 +73,11 @@ FontCustomPlatformData* createFontCustomPlatformData(SharedBuffer* buffer)
 
 bool FontCustomPlatformData::supportsFormat(const String& format)
 {
-    return equalIgnoringCase(format, "truetype") || equalIgnoringCase(format, "opentype");
+    return equalIgnoringCase(format, "truetype") || equalIgnoringCase(format, "opentype")
+#if USE(ZLIB)
+            || equalIgnoringCase(format, "woff")
+#endif
+    ;
 }
 
 }