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
|
/*
* 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 "gm.h"
#include "Resources.h"
#include "SkBitmapProcState.h"
#include "SkBitmapScaler.h"
#include "SkGradientShader.h"
#include "SkImageDecoder.h"
#include "SkImageEncoder.h"
#include "SkStream.h"
#include "SkTypeface.h"
static SkSize computeSize(const SkBitmap& bm, const SkMatrix& mat) {
SkRect bounds = SkRect::MakeWH(SkIntToScalar(bm.width()),
SkIntToScalar(bm.height()));
mat.mapRect(&bounds);
return SkSize::Make(bounds.width(), bounds.height());
}
static void draw_cell(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx,
SkFilterQuality lvl) {
SkPaint paint;
paint.setFilterQuality(lvl);
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(dx, 0);
canvas->concat(mat);
canvas->drawBitmap(bm, 0, 0, &paint);
}
static void draw_row(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx) {
draw_cell(canvas, bm, mat, 0 * dx, kNone_SkFilterQuality);
draw_cell(canvas, bm, mat, 1 * dx, kLow_SkFilterQuality);
draw_cell(canvas, bm, mat, 2 * dx, kMedium_SkFilterQuality);
draw_cell(canvas, bm, mat, 3 * dx, kHigh_SkFilterQuality);
}
class FilterIndiaBoxGM : public skiagm::GM {
void onOnceBeforeDraw() override {
this->makeBitmap();
SkScalar cx = SkScalarHalf(fBM.width());
SkScalar cy = SkScalarHalf(fBM.height());
float vertScale = 30.0f/55.0f;
float horizScale = 150.0f/200.0f;
fMatrix[0].setScale(horizScale, vertScale);
fMatrix[1].setRotate(30, cx, cy); fMatrix[1].postScale(horizScale, vertScale);
}
public:
SkBitmap fBM;
SkMatrix fMatrix[2];
SkString fName;
FilterIndiaBoxGM() {
this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
}
FilterIndiaBoxGM(const char filename[]) : fFilename(filename) {
fName.printf("filterindiabox");
}
protected:
SkString onShortName() override {
return fName;
}
SkISize onISize() override {
return SkISize::Make(1024, 768);
}
void onDraw(SkCanvas* canvas) override {
canvas->translate(10, 10);
for (size_t i = 0; i < SK_ARRAY_COUNT(fMatrix); ++i) {
SkSize size = computeSize(fBM, fMatrix[i]);
size.fWidth += 20;
size.fHeight += 20;
draw_row(canvas, fBM, fMatrix[i], size.fWidth);
canvas->translate(0, size.fHeight);
}
}
protected:
SkString fFilename;
int fSize;
SkScalar getScale() {
return 192.f/fSize;
}
void makeBitmap() {
SkImageDecoder* codec = NULL;
SkString resourcePath = GetResourcePath(fFilename.c_str());
SkFILEStream stream(resourcePath.c_str());
if (stream.isValid()) {
codec = SkImageDecoder::Factory(&stream);
}
if (codec) {
stream.rewind();
codec->decode(&stream, &fBM, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
SkDELETE(codec);
} else {
fBM.allocN32Pixels(1, 1);
*(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
}
fSize = fBM.height();
}
private:
typedef skiagm::GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new FilterIndiaBoxGM("box.gif"); )
|
