make color emoji gm portable

gm/dftext.cpp

Index: gm/dftext.cpp
diff --git a/gm/dftext.cpp b/gm/dftext.cpp
index 0ee01e3309daaf890c3b8974ccc9c9a3aee30bd6..451529c04a5332368a2a12228d37ae9f8d82b1fa 100755
--- a/gm/dftext.cpp
+++ b/gm/dftext.cpp
@@ -24,11 +24,19 @@ public:
 
 protected:
     void onOnceBeforeDraw() override {
-        fTypeface = GetResourceAsTypeface("/fonts/Funkster.ttf");
+        if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) {
+            fTypeface = GetResourceAsTypeface("/fonts/Funkster.ttf");
+        } else if (!strcmp(sk_tool_utils::platform_os_emoji(), "SBIX")) {
+            fTypeface = SkTypeface::CreateFromName("Apple Color Emoji", SkTypeface::kNormal);
+        } else {
+            fTypeface = NULL;
+        }
     }
 
     SkString onShortName() override {
-        return SkString("dftext");
+        SkString name("dftext");
+        name.append(sk_tool_utils::platform_os_emoji());
+        return name;
     }
 
     SkISize onISize() override {
@@ -73,7 +81,7 @@ protected:
         paint.setAntiAlias(true);
         paint.setSubpixelText(true);
 
-        sk_tool_utils::set_portable_typeface(&paint, "Times New Roman", SkTypeface::kNormal);
+        sk_tool_utils::set_portable_typeface_always(&paint, "serif", SkTypeface::kNormal);
 
         const char* text = "Hamburgefons";

[bungeman-skia, 2015/07/21 18:17:16]

Apple Color Emoji should use different chars here to get something colorful.
Maybe we want a means of obtaining a color font and some text to go with it. We
already need three copies of that logic.

         const size_t textLen = strlen(text);
@@ -169,7 +177,7 @@ protected:
             y += paint.getFontMetrics(NULL);
         }
 
-        paint.setColor(0xFF1F1F1F);
+        paint.setColor(sk_tool_utils::color_to_565(0xFF1F1F1F));
         r = SkRect::MakeLTRB(820, 250, 970, 460);
         canvas->drawRect(r, paint);
 
@@ -204,14 +212,11 @@ protected:
         }
 
         // check color emoji
-        paint.setTypeface(fTypeface);
-#ifdef SK_BUILD_FOR_ANDROID
-        paint.setTextSize(SkIntToScalar(19));
-#else
-        paint.setTextSize(SkIntToScalar(22));
-#endif
-        canvas->drawText(text, textLen, 670, 100, paint);
-
+        if (fTypeface) {
+            paint.setTypeface(fTypeface);
+            paint.setTextSize(SkIntToScalar(19));
+            canvas->drawText(text, textLen, 670, 100, paint);
+        }
 #if SK_SUPPORT_GPU
         // render offscreen buffer
         if (surface) {