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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/*
* 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 "SkCanvas.h"
#include "SkAAClip.h"
namespace skiagm {
static void paint_rgn(SkCanvas* canvas, const SkAAClip& clip,
const SkPaint& paint) {
SkMask mask;
SkBitmap bm;
clip.copyToMask(&mask);
SkAutoMaskFreeImage amfi(mask.fImage);
bm.setConfig(SkBitmap::kA8_Config, mask.fBounds.width(),
mask.fBounds.height(), mask.fRowBytes);
bm.setPixels(mask.fImage);
// need to copy for deferred drawing test to work
SkBitmap bm2;
bm.deepCopyTo(&bm2, SkBitmap::kA8_Config);
canvas->drawBitmap(bm2,
SK_Scalar1 * mask.fBounds.fLeft,
SK_Scalar1 * mask.fBounds.fTop,
&paint);
}
//////////////////////////////////////////////////////////////////////////////
/*
* This GM tests anti aliased single operation booleans with SkAAClips,
* SkRect and SkPaths.
*/
class SimpleClipGM : public GM {
public:
enum SkGeomTypes {
kRect_GeomType,
kPath_GeomType,
kAAClip_GeomType
};
SimpleClipGM(SkGeomTypes geomType)
: fGeomType(geomType) {
// offset the rects a bit so we get anti-aliasing in the rect case
fBase.set(SkFloatToScalar(100.5f),
SkFloatToScalar(100.5f),
SkFloatToScalar(150.5f),
SkFloatToScalar(150.5f));
fRect = fBase;
fRect.inset(5, 5);
fRect.offset(25, 25);
fBasePath.addRoundRect(fBase, SkIntToScalar(5), SkIntToScalar(5));
fRectPath.addRoundRect(fRect, SkIntToScalar(5), SkIntToScalar(5));
INHERITED::setBGColor(0xFFDDDDDD);
}
protected:
void buildRgn(SkAAClip* clip, SkRegion::Op op) {
clip->setPath(fBasePath, NULL, true);
SkAAClip clip2;
clip2.setPath(fRectPath, NULL, true);
clip->op(clip2, op);
}
void drawOrig(SkCanvas* canvas) {
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(SK_ColorBLACK);
canvas->drawRect(fBase, paint);
canvas->drawRect(fRect, paint);
}
void drawRgnOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) {
SkAAClip clip;
this->buildRgn(&clip, op);
this->drawOrig(canvas);
SkPaint paint;
paint.setColor(color);
paint_rgn(canvas, clip, paint);
}
void drawPathsOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) {
this->drawOrig(canvas);
canvas->save();
// create the clip mask with the supplied boolean op
if (kPath_GeomType == fGeomType) {
// path-based case
canvas->clipPath(fBasePath, SkRegion::kReplace_Op, true);
canvas->clipPath(fRectPath, op, true);
} else {
// rect-based case
canvas->clipRect(fBase, SkRegion::kReplace_Op, true);
canvas->clipRect(fRect, op, true);
}
// draw a rect that will entirely cover the clip mask area
SkPaint paint;
paint.setColor(color);
SkRect r = SkRect::MakeLTRB(SkIntToScalar(90), SkIntToScalar(90),
SkIntToScalar(180), SkIntToScalar(180));
canvas->drawRect(r, paint);
canvas->restore();
}
virtual SkString onShortName() {
SkString str;
str.printf("simpleaaclip_%s",
kRect_GeomType == fGeomType ? "rect" :
(kPath_GeomType == fGeomType ? "path" :
"aaclip"));
return str;
}
virtual SkISize onISize() {
return make_isize(640, 480);
}
virtual void onDraw(SkCanvas* canvas) {
static const struct {
SkColor fColor;
const char* fName;
SkRegion::Op fOp;
} gOps[] = {
{ SK_ColorBLACK, "Difference", SkRegion::kDifference_Op },
{ SK_ColorRED, "Intersect", SkRegion::kIntersect_Op },
{ 0xFF008800, "Union", SkRegion::kUnion_Op },
{ SK_ColorGREEN, "Rev Diff", SkRegion::kReverseDifference_Op },
{ SK_ColorYELLOW, "Replace", SkRegion::kReplace_Op },
{ SK_ColorBLUE, "XOR", SkRegion::kXOR_Op },
};
SkPaint textPaint;
textPaint.setAntiAlias(true);
textPaint.setTextSize(SK_Scalar1*24);
int xOff = 0;
for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); op++) {
canvas->drawText(gOps[op].fName, strlen(gOps[op].fName),
SkIntToScalar(75), SkIntToScalar(50),
textPaint);
if (kAAClip_GeomType == fGeomType) {
this->drawRgnOped(canvas, gOps[op].fOp, gOps[op].fColor);
} else {
this->drawPathsOped(canvas, gOps[op].fOp, gOps[op].fColor);
}
if (xOff >= 400) {
canvas->translate(SkIntToScalar(-400), SkIntToScalar(250));
xOff = 0;
} else {
canvas->translate(SkIntToScalar(200), 0);
xOff += 200;
}
}
}
private:
SkGeomTypes fGeomType;
SkRect fBase;
SkRect fRect;
SkPath fBasePath; // fBase as a round rect
SkPath fRectPath; // fRect as a round rect
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
// rects
static GM* MyFactory(void*) { return new SimpleClipGM(
SimpleClipGM::kRect_GeomType); }
static GMRegistry reg(MyFactory);
// paths
static GM* MyFactory2(void*) { return new SimpleClipGM(
SimpleClipGM::kPath_GeomType); }
static GMRegistry reg2(MyFactory2);
// aa clip
static GM* MyFactory3(void*) { return new SimpleClipGM(
SimpleClipGM::kAAClip_GeomType); }
static GMRegistry reg3(MyFactory3);
}
|
