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:
onGetFlags() const22 virtual uint32_t onGetFlags() const SK_OVERRIDE {
23 return kSkipTiled_Flag;
24 }
25
onShortName()26 virtual SkString onShortName() {
27 return SkString("fontscaler");
28 }
29
onISize()30 virtual SkISize onISize() {
31 return SkISize::Make(1450, 750);
32 }
33
rotate_about(SkCanvas * canvas,SkScalar degrees,SkScalar px,SkScalar py)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
onDraw(SkCanvas * canvas)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 SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromName("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 int index = 0;
76 for (int ps = 6; ps <= 22; ps++) {
77 paint.setTextSize(SkIntToScalar(ps));
78 canvas->drawText(text, textLen, x, y, paint);
79 y += paint.getFontMetrics(NULL);
80 index += 1;
81 }
82 }
83 canvas->translate(0, SkIntToScalar(360));
84 paint.setSubpixelText(true);
85 }
86 }
87
88 private:
89 typedef GM INHERITED;
90 };
91
92 //////////////////////////////////////////////////////////////////////////////
93
MyFactory(void *)94 static GM* MyFactory(void*) { return new FontScalerGM; }
95 static GMRegistry reg(MyFactory);
96
97 }
98