Create new lcdtext page within gm

http://codereview.appspot.com/4654071



git-svn-id: http://skia.googlecode.com/svn/trunk@1736 2bbb7eff-a529-9590-31e7-b0007b416f81

gm/lcdtext.cpp

@@ -0,0 +1,82 @@
+/*
+    Copyright 2011 Google Inc.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+ */
+
+/* Tests text rendering with LCD and subpixel rendering turned on and off.
+ */
+
+#include "gm.h"
+#include "SkCanvas.h"
+
+namespace skiagm {
+
+class LcdTextGM : public GM {
+public:
+    LcdTextGM() {
+        const int pointSize = 36;
+        textHeight = SkIntToScalar(pointSize);
+    }
+
+protected:
+
+    SkString onShortName() {
+        return SkString("lcdtext");
+    }
+
+    SkISize onISize() { return make_isize(640, 480); }
+
+    void drawBG(SkCanvas* canvas) {
+        canvas->drawColor(SK_ColorWHITE);
+    }
+
+    virtual void onDraw(SkCanvas* canvas) {
+        this->drawBG(canvas);
+
+        y = textHeight;
+        drawText(canvas, SkString("TEXT: SubpixelTrue LCDRenderTrue"),
+                 true,  true);
+        drawText(canvas, SkString("TEXT: SubpixelTrue LCDRenderFalse"),
+                 true,  false);
+        drawText(canvas, SkString("TEXT: SubpixelFalse LCDRenderTrue"),
+                 false, true);
+        drawText(canvas, SkString("TEXT: SubpixelFalse LCDRenderFalse"),
+                 false, false);
+    }
+
+    void drawText(SkCanvas* canvas, const SkString& string,
+                  bool subpixelTextEnabled, bool lcdRenderTextEnabled) {
+        SkPaint paint;
+        paint.setColor(SK_ColorBLACK);
+        paint.setDither(true);
+        paint.setAntiAlias(true);
+        paint.setSubpixelText(subpixelTextEnabled);
+        paint.setLCDRenderText(lcdRenderTextEnabled);
+        paint.setTextSize(textHeight);
+
+        canvas->drawText(string.c_str(), string.size(), 0, y, paint);
+        y += textHeight;
+    }
+
+private:
+    typedef GM INHERITED;
+    SkScalar y, textHeight;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+static GM* MyFactory(void*) { return new LcdTextGM; }
+static GMRegistry reg(MyFactory);
+
+}

gyp/gm.gyp

@@ -13,6 +13,7 @@
         '../gm/blurs.cpp',
         '../gm/filltypes.cpp',
         '../gm/gradients.cpp',
+        '../gm/lcdtext.cpp',
         '../gm/nocolorbleed.cpp',
         '../gm/pathfill.cpp',
         '../gm/points.cpp',