1/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7#include "gm.h"
8#include "SkTypeface.h"
9
10namespace skiagm {
11
12class FontScalerGM : public GM {
13public:
14    FontScalerGM() {
15        this->setBGColor(0xFFFFFFFF);
16    }
17
18    virtual ~FontScalerGM() {
19    }
20
21protected:
22    virtual uint32_t onGetFlags() const SK_OVERRIDE {
23        return kSkipTiled_Flag;
24    }
25
26    virtual SkString onShortName() {
27        return SkString("fontscaler");
28    }
29
30    virtual SkISize onISize() {
31        return SkISize::Make(1450, 750);
32    }
33
34    static void rotate_about(SkCanvas* canvas,
35                             SkScalar degrees,
36                             SkScalar px, SkScalar py) {
37        canvas->translate(px, py);
38        canvas->rotate(degrees);
39        canvas->translate(-px, -py);
40    }
41
42    virtual void onDraw(SkCanvas* canvas) {
43        SkPaint paint;
44
45        paint.setAntiAlias(true);
46        paint.setLCDRenderText(true);
47        //With freetype the default (normal hinting) can be really ugly.
48        //Most distros now set slight (vertical hinting only) in any event.
49        paint.setHinting(SkPaint::kSlight_Hinting);
50        sk_tool_utils::set_portable_typeface(&paint, "Times Roman", SkTypeface::kNormal);
51
52        const char* text = "Hamburgefons ooo mmm";
53        const size_t textLen = strlen(text);
54
55        for (int j = 0; j < 2; ++j) {
56            // This used to do 6 iterations but it causes the N4 to crash in the MSAA4 config.
57            for (int i = 0; i < 5; ++i) {
58                SkScalar x = SkIntToScalar(10);
59                SkScalar y = SkIntToScalar(20);
60
61                SkAutoCanvasRestore acr(canvas, true);
62                canvas->translate(SkIntToScalar(50 + i * 230),
63                                  SkIntToScalar(20));
64                rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10);
65
66                {
67                    SkPaint p;
68                    p.setAntiAlias(true);
69                    SkRect r;
70                    r.set(x - SkIntToScalar(3), SkIntToScalar(15),
71                          x - SkIntToScalar(1), SkIntToScalar(280));
72                    canvas->drawRect(r, p);
73                }
74
75                for (int ps = 6; ps <= 22; ps++) {
76                    paint.setTextSize(SkIntToScalar(ps));
77                    canvas->drawText(text, textLen, x, y, paint);
78                    y += paint.getFontMetrics(NULL);
79                }
80            }
81            canvas->translate(0, SkIntToScalar(360));
82            paint.setSubpixelText(true);
83        }
84    }
85
86private:
87    typedef GM INHERITED;
88};
89
90//////////////////////////////////////////////////////////////////////////////
91
92static GM* MyFactory(void*) { return new FontScalerGM; }
93static GMRegistry reg(MyFactory);
94
95}
96