Add color emoji fallback for distance field text.

gm/dftext.cpp

Index: gm/dftext.cpp
diff --git a/gm/dftext.cpp b/gm/dftext.cpp
index 6f75c4671391af834412f8be0d87cd26bb10a6ec..350e9ab57148f2bcf22ead3a0e380165f2fbbff7 100755
--- a/gm/dftext.cpp
+++ b/gm/dftext.cpp
@@ -5,6 +5,9 @@
  * found in the LICENSE file.
  */
 #include "gm.h"
+#include "Resources.h"
+#include "SkCanvas.h"
+#include "SkStream.h"
 #include "SkSurface.h"
 #include "SkTypeface.h"
 
@@ -14,12 +17,25 @@ class DFTextGM : public GM {
 public:
     DFTextGM() {
         this->setBGColor(0xFFFFFFFF);
+        fTypeface = NULL;
     }
 
     virtual ~DFTextGM() {
+        SkSafeUnref(fTypeface);
     }
 
 protected:
+    virtual void onOnceBeforeDraw() SK_OVERRIDE {
+        SkString filename = GetResourcePath("/Funkster.ttf");
+        SkAutoTUnref<SkFILEStream> stream(new SkFILEStream(filename.c_str()));
+        if (!stream->isValid()) {
+            SkDebugf("Could not find Funkster.ttf, please set --resourcePath correctly.\n");
+            return;
+        }
+
+        fTypeface = SkTypeface::CreateFromStream(stream);
+    }
+
     virtual uint32_t onGetFlags() const SK_OVERRIDE {
         return kGPUOnly_Flag;
     }
@@ -185,6 +201,10 @@ protected:
             y += paint.getFontMetrics(NULL);
         }
 
+        // check color emoji
+        paint.setTypeface(fTypeface);
+        canvas->drawText(text, textLen, 670, 100, paint);
+
 #if SK_SUPPORT_GPU
         // render offscreen buffer
         if (surface) {
@@ -199,6 +219,8 @@ protected:
     }
 
 private:
+    SkTypeface* fTypeface;
+
     typedef GM INHERITED;
 };