1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #include "Test.h"
9 #include "SkPath.h"
10 #include "SkPaint.h"
11 #include "SkLayerDrawLooper.h"
12 #include "SkBlurMaskFilter.h"
13
test_copy(skiatest::Reporter * reporter)14 static void test_copy(skiatest::Reporter* reporter) {
15 SkPaint paint;
16 // set a few member variables
17 paint.setStyle(SkPaint::kStrokeAndFill_Style);
18 paint.setTextAlign(SkPaint::kLeft_Align);
19 paint.setStrokeWidth(SkIntToScalar(2));
20 // set a few pointers
21 SkLayerDrawLooper* looper = new SkLayerDrawLooper();
22 paint.setLooper(looper)->unref();
23 SkMaskFilter* mask = SkBlurMaskFilter::Create(1, SkBlurMaskFilter::kNormal_BlurStyle);
24 paint.setMaskFilter(mask)->unref();
25
26 // copy the paint using the copy constructor and check they are the same
27 SkPaint copiedPaint = paint;
28 REPORTER_ASSERT(reporter, paint == copiedPaint);
29
30 #ifdef SK_BUILD_FOR_ANDROID
31 // the copy constructor should preserve the Generation ID
32 int32_t paintGenID = paint.getGenerationID();
33 int32_t copiedPaintGenID = copiedPaint.getGenerationID();
34 REPORTER_ASSERT(reporter, paintGenID == copiedPaintGenID);
35 REPORTER_ASSERT(reporter, !memcmp(&paint, &copiedPaint, sizeof(paint)));
36 #endif
37
38 // copy the paint using the equal operator and check they are the same
39 copiedPaint = paint;
40 REPORTER_ASSERT(reporter, paint == copiedPaint);
41
42 #ifdef SK_BUILD_FOR_ANDROID
43 // the equals operator should increment the Generation ID
44 REPORTER_ASSERT(reporter, paint.getGenerationID() == paintGenID);
45 REPORTER_ASSERT(reporter, copiedPaint.getGenerationID() != copiedPaintGenID);
46 copiedPaintGenID = copiedPaint.getGenerationID(); // reset to the new value
47 REPORTER_ASSERT(reporter, memcmp(&paint, &copiedPaint, sizeof(paint)));
48 #endif
49
50 // clean the paint and check they are back to their initial states
51 SkPaint cleanPaint;
52 paint.reset();
53 copiedPaint.reset();
54 REPORTER_ASSERT(reporter, cleanPaint == paint);
55 REPORTER_ASSERT(reporter, cleanPaint == copiedPaint);
56
57 #ifdef SK_BUILD_FOR_ANDROID
58 // the reset function should increment the Generation ID
59 REPORTER_ASSERT(reporter, paint.getGenerationID() != paintGenID);
60 REPORTER_ASSERT(reporter, copiedPaint.getGenerationID() != copiedPaintGenID);
61 REPORTER_ASSERT(reporter, memcmp(&cleanPaint, &paint, sizeof(cleanPaint)));
62 REPORTER_ASSERT(reporter, memcmp(&cleanPaint, &copiedPaint, sizeof(cleanPaint)));
63 #endif
64 }
65
66 // found and fixed for webkit: mishandling when we hit recursion limit on
67 // mostly degenerate cubic flatness test
regression_cubic(skiatest::Reporter * reporter)68 static void regression_cubic(skiatest::Reporter* reporter) {
69 SkPath path, stroke;
70 SkPaint paint;
71
72 path.moveTo(SkFloatToFixed(460.2881309415525f),
73 SkFloatToFixed(303.250847066498));
74 path.cubicTo(SkFloatToFixed(463.36378422175284),
75 SkFloatToFixed(302.1169735073363),
76 SkFloatToFixed(456.32239330810046),
77 SkFloatToFixed(304.720354932878),
78 SkFloatToFixed(453.15255460013304),
79 SkFloatToFixed(305.788586869862));
80
81 SkRect fillR, strokeR;
82 fillR = path.getBounds();
83
84 paint.setStyle(SkPaint::kStroke_Style);
85 paint.setStrokeWidth(SkIntToScalar(2));
86 paint.getFillPath(path, &stroke);
87 strokeR = stroke.getBounds();
88
89 SkRect maxR = fillR;
90 SkScalar miter = SkMaxScalar(SK_Scalar1, paint.getStrokeMiter());
91 SkScalar inset = paint.getStrokeJoin() == SkPaint::kMiter_Join ?
92 SkScalarMul(paint.getStrokeWidth(), miter) :
93 paint.getStrokeWidth();
94 maxR.inset(-inset, -inset);
95
96 // test that our stroke didn't explode
97 REPORTER_ASSERT(reporter, maxR.contains(strokeR));
98 }
99
TestPaint(skiatest::Reporter * reporter)100 static void TestPaint(skiatest::Reporter* reporter) {
101 // TODO add general paint tests
102 test_copy(reporter);
103
104 // regression tests
105 regression_cubic(reporter);
106 }
107
108 #include "TestClassDef.h"
109 DEFINE_TESTCLASS("Paint", TestPaintClass, TestPaint)
110