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
16 namespace skiagm {
17
18 class LcdTextGM : public GM {
19 public:
LcdTextGM()20 LcdTextGM() {
21 const int pointSize = 36;
22 textHeight = SkIntToScalar(pointSize);
23 }
24
25 protected:
26
onShortName()27 SkString onShortName() {
28 return SkString("lcdtext");
29 }
30
onISize()31 SkISize onISize() { return make_isize(640, 480); }
32
onDraw(SkCanvas * canvas)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
drawText(SkCanvas * canvas,const SkString & string,bool subpixelTextEnabled,bool lcdRenderTextEnabled)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
60 private:
61 typedef GM INHERITED;
62 SkScalar y, textHeight;
63 };
64
65 ///////////////////////////////////////////////////////////////////////////////
66
MyFactory(void *)67 static GM* MyFactory(void*) { return new LcdTextGM; }
68 static GMRegistry reg(MyFactory);
69
70 }
71