Upstream version 9.38.198.0
[platform/framework/web/crosswalk.git] / src / third_party / skia / tests / PathOpsTightBoundsTest.cpp
1 /*
2  * Copyright 2013 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 #include "PathOpsExtendedTest.h"
8 #include "PathOpsThreadedCommon.h"
9 #include "SkCanvas.h"
10 #include "SkRandom.h"
11 #include "SkTArray.h"
12 #include "SkTSort.h"
13 #include "Test.h"
14
15 static void testTightBoundsLines(PathOpsThreadState* data) {
16     SkRandom ran;
17     for (int index = 0; index < 1000; ++index) {
18         SkPath path;
19         int contourCount = ran.nextRangeU(1, 10);
20         for (int cIndex = 0; cIndex < contourCount; ++cIndex) {
21             int lineCount = ran.nextRangeU(1, 10);
22             path.moveTo(ran.nextRangeF(-1000, 1000), ran.nextRangeF(-1000, 1000));
23             for (int lIndex = 0; lIndex < lineCount; ++lIndex) {
24                 path.lineTo(ran.nextRangeF(-1000, 1000), ran.nextRangeF(-1000, 1000));
25             }
26             if (ran.nextBool()) {
27                 path.close();
28             }
29         }
30         SkRect classicBounds = path.getBounds();
31         SkRect tightBounds;
32         REPORTER_ASSERT(data->fReporter, TightBounds(path, &tightBounds));
33         REPORTER_ASSERT(data->fReporter, classicBounds == tightBounds);
34     }
35 }
36
37 DEF_TEST(PathOpsTightBoundsLines, reporter) {
38     int threadCount = initializeTests(reporter, "tightBoundsLines");
39     PathOpsThreadedTestRunner testRunner(reporter, threadCount);
40     int outerCount = reporter->allowExtendedTest() ? 100 : 1;
41     for (int index = 0; index < outerCount; ++index) {
42         for (int idx2 = 0; idx2 < 10; ++idx2) {
43             *testRunner.fRunnables.append() = SkNEW_ARGS(PathOpsThreadedRunnable,
44                     (&testTightBoundsLines, 0, 0, 0, 0, &testRunner));
45         }
46     }
47     testRunner.render();
48 }
49
50 static void testTightBoundsQuads(PathOpsThreadState* data) {
51     SkRandom ran;
52     const int bitWidth = 32;
53     const int bitHeight = 32;
54     const float pathMin = 1;
55     const float pathMax = (float) (bitHeight - 2);
56     SkBitmap& bits = *data->fBitmap;
57     if (bits.width() == 0) {
58         bits.allocN32Pixels(bitWidth, bitHeight);
59     }
60     SkCanvas canvas(bits);
61     SkPaint paint;
62     for (int index = 0; index < 100; ++index) {
63         SkPath path;
64         int contourCount = ran.nextRangeU(1, 10);
65         for (int cIndex = 0; cIndex < contourCount; ++cIndex) {
66             int lineCount = ran.nextRangeU(1, 10);
67             path.moveTo(ran.nextRangeF(1, pathMax), ran.nextRangeF(pathMin, pathMax));
68             for (int lIndex = 0; lIndex < lineCount; ++lIndex) {
69                 if (ran.nextBool()) {
70                     path.lineTo(ran.nextRangeF(pathMin, pathMax), ran.nextRangeF(pathMin, pathMax));
71                 } else {
72                     path.quadTo(ran.nextRangeF(pathMin, pathMax), ran.nextRangeF(pathMin, pathMax),
73                             ran.nextRangeF(pathMin, pathMax), ran.nextRangeF(pathMin, pathMax));
74                 }
75             }
76             if (ran.nextBool()) {
77                 path.close();
78             }
79         }
80         SkRect classicBounds = path.getBounds();
81         SkRect tightBounds;
82         REPORTER_ASSERT(data->fReporter, TightBounds(path, &tightBounds));
83         REPORTER_ASSERT(data->fReporter, classicBounds.contains(tightBounds));
84         canvas.drawColor(SK_ColorWHITE);
85         canvas.drawPath(path, paint);
86         SkIRect bitsWritten = {31, 31, 0, 0};
87         for (int y = 0; y < bitHeight; ++y) {
88             uint32_t* addr1 = data->fBitmap->getAddr32(0, y);
89             bool lineWritten = false;
90             for (int x = 0; x < bitWidth; ++x) {
91                 if (addr1[x] == (uint32_t) -1) {
92                     continue;
93                 }
94                 lineWritten = true;
95                 bitsWritten.fLeft = SkTMin(bitsWritten.fLeft, x);
96                 bitsWritten.fRight = SkTMax(bitsWritten.fRight, x);
97             }
98             if (!lineWritten) {
99                 continue;
100             }
101             bitsWritten.fTop = SkTMin(bitsWritten.fTop, y);
102             bitsWritten.fBottom = SkTMax(bitsWritten.fBottom, y);
103         }
104         if (!bitsWritten.isEmpty()) {
105             SkIRect tightOut;
106             tightBounds.roundOut(&tightOut);
107             REPORTER_ASSERT(data->fReporter, tightOut.contains(bitsWritten));
108         }
109     }
110 }
111
112 DEF_TEST(PathOpsTightBoundsQuads, reporter) {
113     int threadCount = initializeTests(reporter, "tightBoundsQuads");
114     PathOpsThreadedTestRunner testRunner(reporter, threadCount);
115     int outerCount = reporter->allowExtendedTest() ? 100 : 1;
116     for (int index = 0; index < outerCount; ++index) {
117         for (int idx2 = 0; idx2 < 10; ++idx2) {
118             *testRunner.fRunnables.append() = SkNEW_ARGS(PathOpsThreadedRunnable,
119                     (&testTightBoundsQuads, 0, 0, 0, 0, &testRunner));
120         }
121     }
122     testRunner.render();
123 }