1 /*
2 * Copyright 2015 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 "SkCanvas.h"
9 #include "SkDrawFilter.h"
10 #include "SkSurface.h"
11 #include "Test.h"
12
13 #ifdef SK_SUPPORT_LEGACY_DRAWFILTER
14
15 namespace {
16 class TestFilter : public SkDrawFilter {
17 public:
filter(SkPaint * p,Type)18 bool filter(SkPaint* p, Type) override {
19 return true;
20 }
21 };
22 }
23
24 /**
25 * canvas.setDrawFilter is defined to be local to the save/restore block, such that if you
26 * do the following: save / modify-drawfilter / restore, the current drawfilter should be what
27 * it was before the save.
28 */
test_saverestore(skiatest::Reporter * reporter)29 static void test_saverestore(skiatest::Reporter* reporter) {
30 SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(10, 10));
31 SkCanvas* canvas = surface->getCanvas();
32
33 SkAutoTUnref<TestFilter> df(new TestFilter);
34
35 REPORTER_ASSERT(reporter, nullptr == canvas->getDrawFilter());
36
37 canvas->save();
38 canvas->setDrawFilter(df);
39 REPORTER_ASSERT(reporter, nullptr != canvas->getDrawFilter());
40 canvas->restore();
41
42 REPORTER_ASSERT(reporter, nullptr == canvas->getDrawFilter());
43 }
44
DEF_TEST(DrawFilter,reporter)45 DEF_TEST(DrawFilter, reporter) {
46 test_saverestore(reporter);
47 }
48
49 #endif
50