1
2/*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10/* Tests text rendering with LCD and subpixel rendering turned on and off.
11 */
12
13#include "gm.h"
14#include "SkCanvas.h"
15
16namespace skiagm {
17
18class LcdTextGM : public GM {
19public:
20    LcdTextGM() {
21        const int pointSize = 36;
22        textHeight = SkIntToScalar(pointSize);
23    }
24
25protected:
26
27    SkString onShortName() {
28        return SkString("lcdtext");
29    }
30
31    SkISize onISize() { return SkISize::Make(640, 480); }
32
33    virtual void onDraw(SkCanvas* canvas) {
34
35        y = textHeight;
36        drawText(canvas, SkString("TEXT: SubpixelTrue LCDRenderTrue"),
37                 true,  true);
38        drawText(canvas, SkString("TEXT: SubpixelTrue LCDRenderFalse"),
39                 true,  false);
40        drawText(canvas, SkString("TEXT: SubpixelFalse LCDRenderTrue"),
41                 false, true);
42        drawText(canvas, SkString("TEXT: SubpixelFalse LCDRenderFalse"),
43                 false, false);
44    }
45
46    void drawText(SkCanvas* canvas, const SkString& string,
47                  bool subpixelTextEnabled, bool lcdRenderTextEnabled) {
48        SkPaint paint;
49        paint.setColor(SK_ColorBLACK);
50        paint.setDither(true);
51        paint.setAntiAlias(true);
52        paint.setSubpixelText(subpixelTextEnabled);
53        paint.setLCDRenderText(lcdRenderTextEnabled);
54        paint.setTextSize(textHeight);
55
56        canvas->drawText(string.c_str(), string.size(), 0, y, paint);
57        y += textHeight;
58    }
59
60private:
61    typedef GM INHERITED;
62    SkScalar y, textHeight;
63};
64
65///////////////////////////////////////////////////////////////////////////////
66
67static GM* MyFactory(void*) { return new LcdTextGM; }
68static GMRegistry reg(MyFactory);
69
70}
71