aboutsummaryrefslogtreecommitdiffhomepage
path: root/samplecode/SampleFontScalerTest.cpp
blob: 8494e7556e88453510206044ca6aba691b176214 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

/*
 * Copyright 2011 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkTypeface.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "Sk1DPathEffect.h"
#include "SkCornerPathEffect.h"
#include "SkPathMeasure.h"
#include "SkRandom.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkDither.h"

static const struct {
    const char* fName;
    SkTypeface::Style   fStyle;
} gFaces[] = {
    { NULL, SkTypeface::kNormal },
    { NULL, SkTypeface::kBold },
    { "serif", SkTypeface::kNormal },
    { "serif", SkTypeface::kBold },
    { "serif", SkTypeface::kItalic },
    { "serif", SkTypeface::kBoldItalic },
    { "monospace", SkTypeface::kNormal }
};

static const int gFaceCount = SK_ARRAY_COUNT(gFaces);

class FontScalerTestView : public SampleView {
    SkTypeface* fFaces[gFaceCount];

public:
    FontScalerTestView() {
        for (int i = 0; i < gFaceCount; i++) {
            fFaces[i] = SkTypeface::CreateFromName(gFaces[i].fName,
                                                   gFaces[i].fStyle);
        }
//        this->setBGColor(0xFFDDDDDD);
    }

    virtual ~FontScalerTestView() {
        for (int i = 0; i < gFaceCount; i++) {
            SkSafeUnref(fFaces[i]);
        }
    }

protected:
    // overrides from SkEventSink
    virtual bool onQuery(SkEvent* evt) {
        if (SampleCode::TitleQ(*evt)) {
            SampleCode::TitleR(evt, "FontScaler Test");
            return true;
        }
        return this->INHERITED::onQuery(evt);
    }

    static void rotate_about(SkCanvas* canvas, SkScalar degrees, SkScalar px, SkScalar py) {
        canvas->translate(px, py);
        canvas->rotate(degrees);
        canvas->translate(-px, -py);
    }

    virtual void onDrawContent(SkCanvas* canvas) {
        SkPaint paint;

        // test handling of obscene cubic values (currently broken)
        if (false) {
            SkPoint pts[4];
            pts[0].set(1.61061274e+09f, 6291456);
            pts[1].set(SkFloatToScalar(-7.18397061e+15f),
                       SkFloatToScalar(-1.53091184e+13f));
            pts[2].set(SkFloatToScalar(-1.30077315e+16f),
                       SkFloatToScalar(-2.77196141e+13f));
            pts[3].set(SkFloatToScalar(-1.30077315e+16f),
                       SkFloatToScalar(-2.77196162e+13f));

            SkPath path;
            path.moveTo(pts[0]);
            path.cubicTo(pts[1], pts[2], pts[3]);
            canvas->drawPath(path, paint);
        }

//        paint.setSubpixelText(true);
        paint.setAntiAlias(true);
        paint.setLCDRenderText(true);
        SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromName("Times Roman", SkTypeface::kNormal)));

//        const char* text = "abcdefghijklmnopqrstuvwxyz";
        const char* text = "Hamburgefons ooo mmm";
        const size_t textLen = strlen(text);

        for (int j = 0; j < 2; ++j) {
            for (int i = 0; i < 6; ++i) {
                SkScalar x = SkIntToScalar(10);
                SkScalar y = SkIntToScalar(20);

                SkAutoCanvasRestore acr(canvas, true);
                canvas->translate(SkIntToScalar(50 + i * 230),
                                  SkIntToScalar(20));
                rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10);

                {
                    SkPaint p;
                    p.setAntiAlias(true);
                    SkRect r;
                    r.set(x-3, 15, x-1, 280);
                    canvas->drawRect(r, p);
                }

                int index = 0;
                for (int ps = 6; ps <= 22; ps++) {
                    paint.setTextSize(SkIntToScalar(ps));
                    canvas->drawText(text, textLen, x, y, paint);
                    y += paint.getFontMetrics(NULL);
                    index += 1;
                }
            }
            canvas->translate(0, 400);
            paint.setSubpixelText(true);
        }
    }

private:
    typedef SkView INHERITED;
};

//////////////////////////////////////////////////////////////////////////////

static SkView* MyFactory() { return new FontScalerTestView; }
static SkViewRegister reg(MyFactory);