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
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkPaint.h"
#include "SkPoint.h"
#include "SkTextBlob.h"
#include "Test.h"
class TextBlobTester {
public:
// This unit test feeds an SkTextBlobBuilder various runs then checks to see if
// the result contains the provided data and merges runs when appropriate.
static void TestBuilder(skiatest::Reporter* reporter) {
SkTextBlobBuilder builder;
// empty run set
RunBuilderTest(reporter, builder, NULL, 0, NULL, 0);
RunDef set1[] = {
{ 128, SkTextBlob::kDefault_Positioning, 100, 100 },
};
RunBuilderTest(reporter, builder, set1, SK_ARRAY_COUNT(set1), set1, SK_ARRAY_COUNT(set1));
RunDef set2[] = {
{ 128, SkTextBlob::kHorizontal_Positioning, 100, 100 },
};
RunBuilderTest(reporter, builder, set2, SK_ARRAY_COUNT(set2), set2, SK_ARRAY_COUNT(set2));
RunDef set3[] = {
{ 128, SkTextBlob::kFull_Positioning, 100, 100 },
};
RunBuilderTest(reporter, builder, set3, SK_ARRAY_COUNT(set3), set3, SK_ARRAY_COUNT(set3));
RunDef set4[] = {
{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
};
RunBuilderTest(reporter, builder, set4, SK_ARRAY_COUNT(set4), set4, SK_ARRAY_COUNT(set4));
RunDef set5[] = {
{ 128, SkTextBlob::kHorizontal_Positioning, 100, 150 },
{ 128, SkTextBlob::kHorizontal_Positioning, 200, 150 },
{ 128, SkTextBlob::kHorizontal_Positioning, 300, 250 },
};
RunDef mergedSet5[] = {
{ 256, SkTextBlob::kHorizontal_Positioning, 0, 150 },
{ 128, SkTextBlob::kHorizontal_Positioning, 0, 250 },
};
RunBuilderTest(reporter, builder, set5, SK_ARRAY_COUNT(set5), mergedSet5,
SK_ARRAY_COUNT(mergedSet5));
RunDef set6[] = {
{ 128, SkTextBlob::kFull_Positioning, 100, 100 },
{ 128, SkTextBlob::kFull_Positioning, 200, 200 },
{ 128, SkTextBlob::kFull_Positioning, 300, 300 },
};
RunDef mergedSet6[] = {
{ 384, SkTextBlob::kFull_Positioning, 0, 0 },
};
RunBuilderTest(reporter, builder, set6, SK_ARRAY_COUNT(set6), mergedSet6,
SK_ARRAY_COUNT(mergedSet6));
RunDef set7[] = {
{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
{ 128, SkTextBlob::kHorizontal_Positioning, 100, 150 },
{ 128, SkTextBlob::kHorizontal_Positioning, 200, 150 },
{ 128, SkTextBlob::kFull_Positioning, 400, 350 },
{ 128, SkTextBlob::kFull_Positioning, 400, 350 },
{ 128, SkTextBlob::kDefault_Positioning, 100, 450 },
{ 128, SkTextBlob::kDefault_Positioning, 100, 450 },
{ 128, SkTextBlob::kHorizontal_Positioning, 100, 550 },
{ 128, SkTextBlob::kHorizontal_Positioning, 200, 650 },
{ 128, SkTextBlob::kFull_Positioning, 400, 750 },
{ 128, SkTextBlob::kFull_Positioning, 400, 850 },
};
RunDef mergedSet7[] = {
{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
{ 128, SkTextBlob::kDefault_Positioning, 100, 150 },
{ 256, SkTextBlob::kHorizontal_Positioning, 0, 150 },
{ 256, SkTextBlob::kFull_Positioning, 0, 0 },
{ 128, SkTextBlob::kDefault_Positioning, 100, 450 },
{ 128, SkTextBlob::kDefault_Positioning, 100, 450 },
{ 128, SkTextBlob::kHorizontal_Positioning, 0, 550 },
{ 128, SkTextBlob::kHorizontal_Positioning, 0, 650 },
{ 256, SkTextBlob::kFull_Positioning, 0, 0 },
};
RunBuilderTest(reporter, builder, set7, SK_ARRAY_COUNT(set7), mergedSet7,
SK_ARRAY_COUNT(mergedSet7));
}
// This unit test verifies blob bounds computation.
static void TestBounds(skiatest::Reporter* reporter) {
SkTextBlobBuilder builder;
SkPaint font;
font.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
// Explicit bounds.
{
SkAutoTUnref<const SkTextBlob> blob(builder.build());
REPORTER_ASSERT(reporter, blob->bounds().isEmpty());
}
{
SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
builder.allocRun(font, 16, 0, 0, &r1);
SkAutoTUnref<const SkTextBlob> blob(builder.build());
REPORTER_ASSERT(reporter, blob->bounds() == r1);
}
{
SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
builder.allocRunPosH(font, 16, 0, &r1);
SkAutoTUnref<const SkTextBlob> blob(builder.build());
REPORTER_ASSERT(reporter, blob->bounds() == r1);
}
{
SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
builder.allocRunPos(font, 16, &r1);
SkAutoTUnref<const SkTextBlob> blob(builder.build());
REPORTER_ASSERT(reporter, blob->bounds() == r1);
}
{
SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
SkRect r2 = SkRect::MakeXYWH(15, 20, 50, 50);
SkRect r3 = SkRect::MakeXYWH(0, 5, 10, 5);
builder.allocRun(font, 16, 0, 0, &r1);
builder.allocRunPosH(font, 16, 0, &r2);
builder.allocRunPos(font, 16, &r3);
SkAutoTUnref<const SkTextBlob> blob(builder.build());
REPORTER_ASSERT(reporter, blob->bounds() == SkRect::MakeXYWH(0, 5, 65, 65));
}
{
// Verify empty blob bounds after building some non-empty blobs.
SkAutoTUnref<const SkTextBlob> blob(builder.build());
REPORTER_ASSERT(reporter, blob->bounds().isEmpty());
}
// Implicit bounds
// FIXME: not supported yet.
}
private:
struct RunDef {
unsigned count;
SkTextBlob::GlyphPositioning pos;
SkScalar x, y;
};
static void RunBuilderTest(skiatest::Reporter* reporter, SkTextBlobBuilder& builder,
const RunDef in[], unsigned inCount,
const RunDef out[], unsigned outCount) {
SkPaint font;
font.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
unsigned glyphCount = 0;
unsigned posCount = 0;
for (unsigned i = 0; i < inCount; ++i) {
AddRun(font, in[i].count, in[i].pos, SkPoint::Make(in[i].x, in[i].y), builder);
glyphCount += in[i].count;
posCount += in[i].count * in[i].pos;
}
SkAutoTUnref<const SkTextBlob> blob(builder.build());
SkTextBlob::RunIterator it(blob);
for (unsigned i = 0; i < outCount; ++i) {
REPORTER_ASSERT(reporter, !it.done());
REPORTER_ASSERT(reporter, out[i].pos == it.positioning());
REPORTER_ASSERT(reporter, out[i].count == it.glyphCount());
if (SkTextBlob::kDefault_Positioning == out[i].pos) {
REPORTER_ASSERT(reporter, out[i].x == it.offset().x());
REPORTER_ASSERT(reporter, out[i].y == it.offset().y());
} else if (SkTextBlob::kHorizontal_Positioning == out[i].pos) {
REPORTER_ASSERT(reporter, out[i].y == it.offset().y());
}
for (unsigned k = 0; k < it.glyphCount(); ++k) {
REPORTER_ASSERT(reporter, k % 128 == it.glyphs()[k]);
if (SkTextBlob::kHorizontal_Positioning == it.positioning()) {
REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k]);
} else if (SkTextBlob::kFull_Positioning == it.positioning()) {
REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k * 2]);
REPORTER_ASSERT(reporter, -SkIntToScalar(k % 128) == it.pos()[k * 2 + 1]);
}
}
it.next();
}
REPORTER_ASSERT(reporter, it.done());
}
static void AddRun(const SkPaint& font, int count, SkTextBlob::GlyphPositioning pos,
const SkPoint& offset, SkTextBlobBuilder& builder,
const SkRect* bounds = NULL) {
switch (pos) {
case SkTextBlob::kDefault_Positioning: {
const SkTextBlobBuilder::RunBuffer& rb = builder.allocRun(font, count, offset.x(),
offset.y(), bounds);
for (int i = 0; i < count; ++i) {
rb.glyphs[i] = i;
}
} break;
case SkTextBlob::kHorizontal_Positioning: {
const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPosH(font, count, offset.y(),
bounds);
for (int i = 0; i < count; ++i) {
rb.glyphs[i] = i;
rb.pos[i] = SkIntToScalar(i);
}
} break;
case SkTextBlob::kFull_Positioning: {
const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPos(font, count, bounds);
for (int i = 0; i < count; ++i) {
rb.glyphs[i] = i;
rb.pos[i * 2] = SkIntToScalar(i);
rb.pos[i * 2 + 1] = -SkIntToScalar(i);
}
} break;
default:
SkFAIL("unhandled positioning value");
}
}
};
DEF_TEST(TextBlob_builder, reporter) {
TextBlobTester::TestBuilder(reporter);
TextBlobTester::TestBounds(reporter);
}
|
