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
|
/*
* 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 "SkCanvas.h"
#include "SkColorShader.h"
#include "SkEmptyShader.h"
#include "SkGradientShader.h"
#include "SkShader.h"
#include "SkTemplates.h"
#include "Test.h"
struct GradRec {
int fColorCount;
const SkColor* fColors;
const SkScalar* fPos;
const SkPoint* fPoint; // 2
const SkScalar* fRadius; // 2
SkShader::TileMode fTileMode;
void gradCheck(skiatest::Reporter* reporter, SkShader* shader,
SkShader::GradientInfo* info,
SkShader::GradientType gt) const {
SkAutoTMalloc<SkColor> colorStorage(fColorCount);
SkAutoTMalloc<SkScalar> posStorage(fColorCount);
info->fColorCount = fColorCount;
info->fColors = colorStorage;
info->fColorOffsets = posStorage.get();
REPORTER_ASSERT(reporter, shader->asAGradient(info) == gt);
REPORTER_ASSERT(reporter, info->fColorCount == fColorCount);
REPORTER_ASSERT(reporter,
!memcmp(info->fColors, fColors, fColorCount * sizeof(SkColor)));
REPORTER_ASSERT(reporter,
!memcmp(info->fColorOffsets, fPos, fColorCount * sizeof(SkScalar)));
REPORTER_ASSERT(reporter, fTileMode == info->fTileMode);
}
};
static void none_gradproc(skiatest::Reporter* reporter, const GradRec&) {
SkAutoTUnref<SkShader> s(new SkEmptyShader);
REPORTER_ASSERT(reporter, SkShader::kNone_GradientType == s->asAGradient(NULL));
}
static void color_gradproc(skiatest::Reporter* reporter, const GradRec& rec) {
SkAutoTUnref<SkShader> s(new SkColorShader(rec.fColors[0]));
REPORTER_ASSERT(reporter, SkShader::kColor_GradientType == s->asAGradient(NULL));
SkShader::GradientInfo info;
info.fColors = NULL;
info.fColorCount = 0;
s->asAGradient(&info);
REPORTER_ASSERT(reporter, 1 == info.fColorCount);
}
static void linear_gradproc(skiatest::Reporter* reporter, const GradRec& rec) {
SkAutoTUnref<SkShader> s(SkGradientShader::CreateLinear(rec.fPoint,
rec.fColors,
rec.fPos,
rec.fColorCount,
rec.fTileMode));
SkShader::GradientInfo info;
rec.gradCheck(reporter, s, &info, SkShader::kLinear_GradientType);
REPORTER_ASSERT(reporter, !memcmp(info.fPoint, rec.fPoint, 2 * sizeof(SkPoint)));
}
static void radial_gradproc(skiatest::Reporter* reporter, const GradRec& rec) {
SkAutoTUnref<SkShader> s(SkGradientShader::CreateRadial(rec.fPoint[0],
rec.fRadius[0],
rec.fColors,
rec.fPos,
rec.fColorCount,
rec.fTileMode));
SkShader::GradientInfo info;
rec.gradCheck(reporter, s, &info, SkShader::kRadial_GradientType);
REPORTER_ASSERT(reporter, info.fPoint[0] == rec.fPoint[0]);
REPORTER_ASSERT(reporter, info.fRadius[0] == rec.fRadius[0]);
}
static void radial2_gradproc(skiatest::Reporter* reporter, const GradRec& rec) {
SkAutoTUnref<SkShader> s(SkGradientShader::CreateTwoPointRadial(rec.fPoint[0],
rec.fRadius[0],
rec.fPoint[1],
rec.fRadius[1],
rec.fColors,
rec.fPos,
rec.fColorCount,
rec.fTileMode));
SkShader::GradientInfo info;
rec.gradCheck(reporter, s, &info, SkShader::kRadial2_GradientType);
REPORTER_ASSERT(reporter, !memcmp(info.fPoint, rec.fPoint, 2 * sizeof(SkPoint)));
REPORTER_ASSERT(reporter, !memcmp(info.fRadius, rec.fRadius, 2 * sizeof(SkScalar)));
}
static void sweep_gradproc(skiatest::Reporter* reporter, const GradRec& rec) {
SkAutoTUnref<SkShader> s(SkGradientShader::CreateSweep(rec.fPoint[0].fX,
rec.fPoint[0].fY,
rec.fColors,
rec.fPos,
rec.fColorCount));
SkShader::GradientInfo info;
rec.gradCheck(reporter, s, &info, SkShader::kSweep_GradientType);
REPORTER_ASSERT(reporter, info.fPoint[0] == rec.fPoint[0]);
}
static void conical_gradproc(skiatest::Reporter* reporter, const GradRec& rec) {
SkAutoTUnref<SkShader> s(SkGradientShader::CreateTwoPointConical(rec.fPoint[0],
rec.fRadius[0],
rec.fPoint[1],
rec.fRadius[1],
rec.fColors,
rec.fPos,
rec.fColorCount,
rec.fTileMode));
SkShader::GradientInfo info;
rec.gradCheck(reporter, s, &info, SkShader::kConical_GradientType);
REPORTER_ASSERT(reporter, !memcmp(info.fPoint, rec.fPoint, 2 * sizeof(SkPoint)));
REPORTER_ASSERT(reporter, !memcmp(info.fRadius, rec.fRadius, 2 * sizeof(SkScalar)));
}
// Ensure that repeated color gradients behave like drawing a single color
static void TestConstantGradient(skiatest::Reporter*) {
const SkPoint pts[] = {
{ 0, 0 },
{ SkIntToScalar(10), 0 }
};
SkColor colors[] = { SK_ColorBLUE, SK_ColorBLUE };
const SkScalar pos[] = { 0, SK_Scalar1 };
SkAutoTUnref<SkShader> s(SkGradientShader::CreateLinear(pts,
colors,
pos,
2,
SkShader::kClamp_TileMode));
SkBitmap outBitmap;
outBitmap.allocN32Pixels(10, 1);
SkPaint paint;
paint.setShader(s.get());
SkCanvas canvas(outBitmap);
canvas.drawPaint(paint);
SkAutoLockPixels alp(outBitmap);
for (int i = 0; i < 10; i++) {
// The following is commented out because it currently fails
// Related bug: https://code.google.com/p/skia/issues/detail?id=1098
// REPORTER_ASSERT(reporter, SK_ColorBLUE == outBitmap.getColor(i, 0));
}
}
typedef void (*GradProc)(skiatest::Reporter* reporter, const GradRec&);
static void TestGradientShaders(skiatest::Reporter* reporter) {
static const SkColor gColors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
static const SkScalar gPos[] = { 0, SK_ScalarHalf, SK_Scalar1 };
static const SkPoint gPts[] = {
{ 0, 0 },
{ SkIntToScalar(10), SkIntToScalar(20) }
};
static const SkScalar gRad[] = { SkIntToScalar(1), SkIntToScalar(2) };
GradRec rec;
rec.fColorCount = SK_ARRAY_COUNT(gColors);
rec.fColors = gColors;
rec.fPos = gPos;
rec.fPoint = gPts;
rec.fRadius = gRad;
rec.fTileMode = SkShader::kClamp_TileMode;
static const GradProc gProcs[] = {
none_gradproc,
color_gradproc,
linear_gradproc,
radial_gradproc,
radial2_gradproc,
sweep_gradproc,
conical_gradproc,
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gProcs); ++i) {
gProcs[i](reporter, rec);
}
}
DEF_TEST(Gradient, reporter) {
TestGradientShaders(reporter);
TestConstantGradient(reporter);
}
|
