Set the kMultiMaster_FontFlag in DirectWrite.

DirectWrite can now produce system font typefaces which are variations,
so mark these as multiple masters so printing knows what to do.

BUG=chromium:697916

Change-Id: Idf09ebba3c7002a09ff2e4a2dbae13dbce4e79d4
Reviewed-on: https://skia-review.googlesource.com/12101
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/ports/SkTypeface_win_dw.cpp b/src/ports/SkTypeface_win_dw.cpp
index 9ff9177012..ae4e3f7105 100644
--- a/src/ports/SkTypeface_win_dw.cpp
+++ b/src/ports/SkTypeface_win_dw.cpp
@@ -18,6 +18,7 @@
 #include "SkDWriteFontFileStream.h"
 #include "SkFontDescriptor.h"
 #include "SkFontStream.h"
+#include "SkOTTable_fvar.h"
 #include "SkOTTable_head.h"
 #include "SkOTTable_hhea.h"
 #include "SkOTTable_OS_2.h"
@@ -376,6 +377,13 @@ SkAdvancedTypefaceMetrics* DWriteFontTypeface::onGetAdvancedTypefaceMetrics(
         return info;
     }
 
+    // There are versions of DirectWrite which support named instances for system variation fonts,
+    // but no means to indicate that such a typeface is a variation.
+    AutoTDWriteTable<SkOTTableFontVariations> fvarTable(fDWriteFontFace.get());
+    if (fvarTable.fExists) {
+        info->fFlags |= SkAdvancedTypefaceMetrics::kMultiMaster_FontFlag;
+    }
+
     //There exist CJK fonts which set the IsFixedPitch and Monospace bits,
     //but have full width, latin half-width, and half-width kana.
     bool fixedWidth = (postTable->isFixedPitch &&