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