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 #include "SampleCode.h"
9 #include "SkView.h"
10 #include "SkCanvas.h"
11 #include "SkTypeface.h"
12 #include "SkPath.h"
13 #include "SkRegion.h"
14 #include "SkShader.h"
15 #include "SkUtils.h"
16 #include "Sk1DPathEffect.h"
17 #include "SkCornerPathEffect.h"
18 #include "SkPathMeasure.h"
19 #include "SkRandom.h"
20 #include "SkColorPriv.h"
21 #include "SkColorFilter.h"
22 #include "SkDither.h"
23
24 static const struct {
25 const char* fName;
26 SkTypeface::Style fStyle;
27 } gFaces[] = {
28 { nullptr, SkTypeface::kNormal },
29 { nullptr, SkTypeface::kBold },
30 { "serif", SkTypeface::kNormal },
31 { "serif", SkTypeface::kBold },
32 { "serif", SkTypeface::kItalic },
33 { "serif", SkTypeface::kBoldItalic },
34 { "monospace", SkTypeface::kNormal }
35 };
36
37 static const int gFaceCount = SK_ARRAY_COUNT(gFaces);
38
39 class FontScalerTestView : public SampleView {
40 SkTypeface* fFaces[gFaceCount];
41
42 public:
FontScalerTestView()43 FontScalerTestView() {
44 for (int i = 0; i < gFaceCount; i++) {
45 fFaces[i] = SkTypeface::CreateFromName(gFaces[i].fName,
46 gFaces[i].fStyle);
47 }
48 // this->setBGColor(0xFFDDDDDD);
49 }
50
~FontScalerTestView()51 virtual ~FontScalerTestView() {
52 for (int i = 0; i < gFaceCount; i++) {
53 SkSafeUnref(fFaces[i]);
54 }
55 }
56
57 protected:
58 // overrides from SkEventSink
onQuery(SkEvent * evt)59 virtual bool onQuery(SkEvent* evt) {
60 if (SampleCode::TitleQ(*evt)) {
61 SampleCode::TitleR(evt, "FontScaler Test");
62 return true;
63 }
64 return this->INHERITED::onQuery(evt);
65 }
66
rotate_about(SkCanvas * canvas,SkScalar degrees,SkScalar px,SkScalar py)67 static void rotate_about(SkCanvas* canvas, SkScalar degrees, SkScalar px, SkScalar py) {
68 canvas->translate(px, py);
69 canvas->rotate(degrees);
70 canvas->translate(-px, -py);
71 }
72
onDrawContent(SkCanvas * canvas)73 virtual void onDrawContent(SkCanvas* canvas) {
74 SkPaint paint;
75
76 // test handling of obscene cubic values (currently broken)
77 if (false) {
78 SkPoint pts[4];
79 pts[0].set(1.61061274e+09f, 6291456);
80 pts[1].set(-7.18397061e+15f,
81 -1.53091184e+13f);
82 pts[2].set(-1.30077315e+16f,
83 -2.77196141e+13f);
84 pts[3].set(-1.30077315e+16f,
85 -2.77196162e+13f);
86
87 SkPath path;
88 path.moveTo(pts[0]);
89 path.cubicTo(pts[1], pts[2], pts[3]);
90 canvas->drawPath(path, paint);
91 }
92
93 // paint.setSubpixelText(true);
94 paint.setAntiAlias(true);
95 paint.setLCDRenderText(true);
96 SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromName("Times Roman", SkTypeface::kNormal)));
97
98 // const char* text = "abcdefghijklmnopqrstuvwxyz";
99 const char* text = "Hamburgefons ooo mmm";
100 const size_t textLen = strlen(text);
101
102 for (int j = 0; j < 2; ++j) {
103 for (int i = 0; i < 6; ++i) {
104 SkScalar x = SkIntToScalar(10);
105 SkScalar y = SkIntToScalar(20);
106
107 SkAutoCanvasRestore acr(canvas, true);
108 canvas->translate(SkIntToScalar(50 + i * 230),
109 SkIntToScalar(20));
110 rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10);
111
112 {
113 SkPaint p;
114 p.setAntiAlias(true);
115 SkRect r;
116 r.set(x-3, 15, x-1, 280);
117 canvas->drawRect(r, p);
118 }
119
120 int index = 0;
121 for (int ps = 6; ps <= 22; ps++) {
122 paint.setTextSize(SkIntToScalar(ps));
123 canvas->drawText(text, textLen, x, y, paint);
124 y += paint.getFontMetrics(nullptr);
125 index += 1;
126 }
127 }
128 canvas->translate(0, 400);
129 paint.setSubpixelText(true);
130 }
131 }
132
133 private:
134 typedef SkView INHERITED;
135 };
136
137 //////////////////////////////////////////////////////////////////////////////
138
MyFactory()139 static SkView* MyFactory() { return new FontScalerTestView; }
140 static SkViewRegister reg(MyFactory);
141