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
|
/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "sk_tool_utils.h"
#include "SkMorphologyImageFilter.h"
#define WIDTH 700
#define HEIGHT 560
namespace skiagm {
class MorphologyGM : public GM {
public:
MorphologyGM() {
this->setBGColor(0xFF000000);
}
protected:
SkString onShortName() override {
return SkString("morphology");
}
void onOnceBeforeDraw() override {
fBitmap.allocN32Pixels(135, 135);
SkCanvas canvas(fBitmap);
canvas.clear(0x0);
SkPaint paint;
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
const char* str1 = "ABC";
const char* str2 = "XYZ";
paint.setColor(0xFFFFFFFF);
paint.setTextSize(64);
canvas.drawString(str1, 10, 55, paint);
canvas.drawString(str2, 10, 110, paint);
}
SkISize onISize() override {
return SkISize::Make(WIDTH, HEIGHT);
}
void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x, int y) {
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
canvas->clipRect(SkRect::MakeWH(
SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
canvas->drawBitmap(fBitmap, 0, 0, &paint);
canvas->restore();
}
void onDraw(SkCanvas* canvas) override {
struct {
int fWidth, fHeight;
int fRadiusX, fRadiusY;
} samples[] = {
{ 140, 140, 0, 0 },
{ 140, 140, 0, 2 },
{ 140, 140, 2, 0 },
{ 140, 140, 2, 2 },
{ 24, 24, 25, 25 },
};
SkPaint paint;
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(25, 20, 100, 80));
for (unsigned j = 0; j < 4; ++j) {
for (unsigned i = 0; i < SK_ARRAY_COUNT(samples); ++i) {
const SkImageFilter::CropRect* cr = j & 0x02 ? &cropRect : nullptr;
if (j & 0x01) {
paint.setImageFilter(SkErodeImageFilter::Make(samples[i].fRadiusX,
samples[i].fRadiusY,
nullptr,
cr));
} else {
paint.setImageFilter(SkDilateImageFilter::Make(samples[i].fRadiusX,
samples[i].fRadiusY,
nullptr,
cr));
}
this->drawClippedBitmap(canvas, paint, i * 140, j * 140);
}
}
}
private:
SkBitmap fBitmap;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new MorphologyGM;)
}
|
