1 /*
2 * Copyright 2011 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
8 #include "include/core/SkBitmap.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkPoint3.h"
11 #include "include/core/SkTypes.h"
12 #include "include/effects/SkImageFilters.h"
13 #include "src/core/SkArenaAlloc.h"
14 #include "tests/Test.h"
15
test_drawBitmap(skiatest::Reporter * reporter)16 static void test_drawBitmap(skiatest::Reporter* reporter) {
17 SkBitmap src;
18 src.allocN32Pixels(10, 10);
19 src.eraseColor(SK_ColorWHITE);
20
21 SkBitmap dst;
22 dst.allocN32Pixels(10, 10);
23 dst.eraseColor(SK_ColorTRANSPARENT);
24
25 SkCanvas canvas(dst);
26 SkPaint paint;
27
28 // we are initially transparent
29 REPORTER_ASSERT(reporter, 0 == *dst.getAddr32(5, 5));
30
31 // we see the bitmap drawn
32 canvas.drawBitmap(src, 0, 0, &paint);
33 REPORTER_ASSERT(reporter, 0xFFFFFFFF == *dst.getAddr32(5, 5));
34
35 // reverify we are clear again
36 dst.eraseColor(SK_ColorTRANSPARENT);
37 REPORTER_ASSERT(reporter, 0 == *dst.getAddr32(5, 5));
38
39 // if the bitmap is clipped out, we don't draw it
40 canvas.drawBitmap(src, SkIntToScalar(-10), 0, &paint);
41 REPORTER_ASSERT(reporter, 0 == *dst.getAddr32(5, 5));
42 }
43
test_layers(skiatest::Reporter * reporter)44 static void test_layers(skiatest::Reporter* reporter) {
45 SkCanvas canvas(100, 100);
46
47 SkRect r = SkRect::MakeWH(10, 10);
48 REPORTER_ASSERT(reporter, false == canvas.quickReject(r));
49
50 r.offset(300, 300);
51 REPORTER_ASSERT(reporter, true == canvas.quickReject(r));
52
53 // Test that saveLayer updates quickReject
54 SkRect bounds = SkRect::MakeLTRB(50, 50, 70, 70);
55 canvas.saveLayer(&bounds, nullptr);
56 REPORTER_ASSERT(reporter, true == canvas.quickReject(SkRect::MakeWH(10, 10)));
57 REPORTER_ASSERT(reporter, false == canvas.quickReject(SkRect::MakeWH(60, 60)));
58 }
59
test_quick_reject(skiatest::Reporter * reporter)60 static void test_quick_reject(skiatest::Reporter* reporter) {
61 SkCanvas canvas(100, 100);
62 SkRect r0 = SkRect::MakeLTRB(-50.0f, -50.0f, 50.0f, 50.0f);
63 SkRect r1 = SkRect::MakeLTRB(-50.0f, 110.0f, 50.0f, 120.0f);
64 SkRect r2 = SkRect::MakeLTRB(110.0f, -50.0f, 120.0f, 50.0f);
65 SkRect r3 = SkRect::MakeLTRB(-120.0f, -50.0f, 120.0f, 50.0f);
66 SkRect r4 = SkRect::MakeLTRB(-50.0f, -120.0f, 50.0f, 120.0f);
67 SkRect r5 = SkRect::MakeLTRB(-120.0f, -120.0f, 120.0f, 120.0f);
68 SkRect r6 = SkRect::MakeLTRB(-120.0f, -120.0f, -110.0f, -110.0f);
69 SkRect r7 = SkRect::MakeLTRB(SK_ScalarNaN, -50.0f, 50.0f, 50.0f);
70 SkRect r8 = SkRect::MakeLTRB(-50.0f, SK_ScalarNaN, 50.0f, 50.0f);
71 SkRect r9 = SkRect::MakeLTRB(-50.0f, -50.0f, SK_ScalarNaN, 50.0f);
72 SkRect r10 = SkRect::MakeLTRB(-50.0f, -50.0f, 50.0f, SK_ScalarNaN);
73 REPORTER_ASSERT(reporter, false == canvas.quickReject(r0));
74 REPORTER_ASSERT(reporter, true == canvas.quickReject(r1));
75 REPORTER_ASSERT(reporter, true == canvas.quickReject(r2));
76 REPORTER_ASSERT(reporter, false == canvas.quickReject(r3));
77 REPORTER_ASSERT(reporter, false == canvas.quickReject(r4));
78 REPORTER_ASSERT(reporter, false == canvas.quickReject(r5));
79 REPORTER_ASSERT(reporter, true == canvas.quickReject(r6));
80 REPORTER_ASSERT(reporter, true == canvas.quickReject(r7));
81 REPORTER_ASSERT(reporter, true == canvas.quickReject(r8));
82 REPORTER_ASSERT(reporter, true == canvas.quickReject(r9));
83 REPORTER_ASSERT(reporter, true == canvas.quickReject(r10));
84
85 SkMatrix m = SkMatrix::MakeScale(2.0f);
86 m.setTranslateX(10.0f);
87 m.setTranslateY(10.0f);
88 canvas.setMatrix(m);
89 SkRect r11 = SkRect::MakeLTRB(5.0f, 5.0f, 100.0f, 100.0f);
90 SkRect r12 = SkRect::MakeLTRB(5.0f, 50.0f, 100.0f, 100.0f);
91 SkRect r13 = SkRect::MakeLTRB(50.0f, 5.0f, 100.0f, 100.0f);
92 REPORTER_ASSERT(reporter, false == canvas.quickReject(r11));
93 REPORTER_ASSERT(reporter, true == canvas.quickReject(r12));
94 REPORTER_ASSERT(reporter, true == canvas.quickReject(r13));
95 }
96
DEF_TEST(QuickReject,reporter)97 DEF_TEST(QuickReject, reporter) {
98 test_drawBitmap(reporter);
99 test_layers(reporter);
100 test_quick_reject(reporter);
101 }
102
103 // Regression test to make sure that we keep fIsScaleTranslate up to date on the canvas.
104 // It is possible to set a new matrix on the canvas without calling setMatrix(). This tests
105 // that code path.
DEF_TEST(QuickReject_MatrixState,reporter)106 DEF_TEST(QuickReject_MatrixState, reporter) {
107 SkCanvas canvas(100, 100);
108
109 SkMatrix matrix;
110 matrix.setRotate(45.0f);
111 canvas.setMatrix(matrix);
112
113 SkPaint paint;
114 sk_sp<SkImageFilter> filter = SkImageFilters::DistantLitDiffuse(
115 SkPoint3::Make(1.0f, 1.0f, 1.0f), 0xFF0000FF, 2.0f, 0.5f, nullptr);
116 REPORTER_ASSERT(reporter, filter);
117 paint.setImageFilter(filter);
118 SkCanvas::SaveLayerRec rec;
119 rec.fPaint = &paint;
120 canvas.saveLayer(rec);
121
122 // quickReject() will assert if the matrix is out of sync.
123 canvas.quickReject(SkRect::MakeWH(100.0f, 100.0f));
124 }
125