Update fontcache gm to actually stress font atlas

gm/fontcache.cpp

 /*
  * 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 "SkGraphics.h"
 #include "SkTypeface.h"
 
 // GM to stress the GPU font cache
 
-const char* gFamilyNames[] = {
-    "sans-serif", "serif"
-};
-
-const SkTypeface::Style gStyles[] = {
-    SkTypeface::kNormal, SkTypeface::kItalic, SkTypeface::kBold
-};
-
-const SkScalar gTextSizes[] = {
-    192, 194, 196, 198, 200, 202, 204, 206
-};
-
-#define TYPEFACE_COUNT (SK_ARRAY_COUNT(gFamilyNames)*SK_ARRAY_COUNT(gStyles))
-
 static SkScalar draw_string(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 FontCacheGM : public skiagm::GM {
 public:
     FontCacheGM() {
-        for (size_t i = 0; i < TYPEFACE_COUNT; ++i) {
-            fTypefaces[i] = NULL;
-        }
+        fTypefaces[0] = NULL;
+        fTypefaces[1] = NULL;
     }
 
     virtual ~FontCacheGM() {
-        for (size_t i = 0; i < TYPEFACE_COUNT; ++i) {
-            SkSafeUnref(fTypefaces[i]);
-        }
+        SkSafeUnref(fTypefaces[0]);
+        SkSafeUnref(fTypefaces[1]);
     }
 
 protected:
     SkString onShortName() SK_OVERRIDE {
         return SkString("fontcache");
     }
 
     SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(1280, 640);
     }
 
     void onOnceBeforeDraw() SK_OVERRIDE {
-        int typefaceCount = 0;
-        for (size_t i = 0; i < SK_ARRAY_COUNT(gFamilyNames); ++i) {
-            for (size_t j = 0; j < SK_ARRAY_COUNT(gStyles); ++j) {
-                fTypefaces[typefaceCount++] = sk_tool_utils::create_portable_typeface(gFamilyNames[i],
-                                                                               gStyles[j]);
-            }
-        }
+        fTypefaces[0] = sk_tool_utils::create_portable_typeface("serif", SkTypeface::kItalic);
+        fTypefaces[1] = sk_tool_utils::create_portable_typeface("sans-serif", SkTypeface::kItalic);
     }
 
     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
-        SkScalar y = 32;
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setLCDRenderText(true);
         paint.setSubpixelText(true);
+        paint.setTypeface(fTypefaces[0]);
+        paint.setTextSize(192);
 
-        SkString text("H");
-
-        // draw enough to overflow the cache
-        for (size_t i = 0; i < TYPEFACE_COUNT; ++i) {
-            paint.setTypeface(fTypefaces[i]);
-            SkScalar x = 20;
-
-            for (size_t j = 0; j < SK_ARRAY_COUNT(gTextSizes); ++j) {
-                paint.setTextSize(gTextSizes[j]);
-                x = draw_string(canvas, text, x, y, paint) + 10;
-            }
-            y += 128;
-        }
-
+        SkScalar x = 20;
+        SkScalar y = 128;
+        SkString text("ABCDEFGHIJ");
+        draw_string(canvas, text, x, y, paint);
+        y += 100;
+        SkString text2("KLMNOPQRS");
+        draw_string(canvas, text2, x, y, paint);
+        y += 100;
+        SkString text3("TUVWXYZ012");
+        draw_string(canvas, text3, x, y, paint);
+        y += 100;
+        paint.setTypeface(fTypefaces[1]);
+        draw_string(canvas, text, x, y, paint);
+        y += 100;
+        draw_string(canvas, text2, x, y, paint);
+        y += 100;
+        draw_string(canvas, text3, x, y, paint);
+        y += 100;
     }
 
 private:
-    SkTypeface* fTypefaces[TYPEFACE_COUNT];
+    SkTypeface* fTypefaces[2];
     typedef GM INHERITED;
 };
 
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return SkNEW(FontCacheGM); )