add gm for experimental fontmgr api

git-svn-id: http://skia.googlecode.com/svn/trunk@8426 2bbb7eff-a529-9590-31e7-b0007b416f81

gm/fontmgr.cpp

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "gm.h"
+#include "SkCanvas.h"
+#include "SkFontMgr.h"
+#include "SkGraphics.h"
+#include "SkTypeface.h"
+
+// limit this just so we don't take too long to draw
+#define MAX_FAMILIES    30
+
+static SkScalar drawString(SkCanvas* canvas, const SkString& text, SkScalar x,
+                           SkScalar y, const SkPaint& paint) {
+    canvas->drawText(text.c_str(), text.size(), x, y, paint);
+    return x + paint.measureText(text.c_str(), text.size());
+}
+
+class FontMgrGM : public skiagm::GM {
+public:
+    FontMgrGM() {
+        SkGraphics::SetFontCacheLimit(16 * 1024 * 1024);
+    }
+
+protected:
+    virtual SkString onShortName() {
+        return SkString("fontmgr");
+    }
+
+    virtual SkISize onISize() {
+        return SkISize::Make(640, 1024);
+    }
+
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        SkScalar y = 20;
+        SkPaint paint;
+        paint.setAntiAlias(true);
+        paint.setLCDRenderText(true);
+        paint.setSubpixelText(true);
+        paint.setTextSize(17);
+        
+        SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault());
+        int count = SkMin32(fm->countFamilies(), MAX_FAMILIES);
+
+        for (int i = 0; i < count; ++i) {
+            SkString fname;
+            fm->getFamilyName(i, &fname);
+            paint.setTypeface(NULL);
+            (void)drawString(canvas, fname, 20, y, paint);
+            
+            SkScalar x = 220;
+            SkAutoTUnref<SkFontStyleSet> set(fm->createStyleSet(i));
+            for (int j = 0; j < set->count(); ++j) {
+                SkString sname;
+                SkFontStyle fs;
+                set->getStyle(j, &fs, &sname);
+                
+                SkSafeUnref(paint.setTypeface(set->createTypeface(j)));
+                x = drawString(canvas, sname, x, y, paint) + 20;
+            }            
+            y += 24;
+        }
+    }
+
+private:
+    typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+DEF_GM( return SkNEW(FontMgrGM); )
+

gyp/gmslides.gypi

@@ -36,6 +36,7 @@
     '../gm/factory.cpp',
     '../gm/filltypes.cpp',
     '../gm/filltypespersp.cpp',
+    '../gm/fontmgr.cpp',
     '../gm/fontscaler.cpp',
     '../gm/gammatext.cpp',
     '../gm/getpostextpath.cpp',