| |
| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "Test.h" |
| #include "SkColorMatrixFilter.h" |
| #include "SkColorFilterImageFilter.h" |
| #include "SkRect.h" |
| |
| class ImageFilterTest { |
| public: |
| |
| static SkImageFilter* make_scale(float amount, SkImageFilter* input = NULL) { |
| SkScalar s = SkFloatToScalar(amount); |
| SkScalar matrix[20] = { s, 0, 0, 0, 0, |
| 0, s, 0, 0, 0, |
| 0, 0, s, 0, 0, |
| 0, 0, 0, s, 0 }; |
| SkAutoTUnref<SkColorFilter> filter(new SkColorMatrixFilter(matrix)); |
| return SkColorFilterImageFilter::Create(filter, input); |
| } |
| |
| static SkImageFilter* make_grayscale(SkImageFilter* input = NULL, const SkIRect* cropRect = NULL) { |
| SkScalar matrix[20]; |
| memset(matrix, 0, 20 * sizeof(SkScalar)); |
| matrix[0] = matrix[5] = matrix[10] = SkFloatToScalar(0.2126f); |
| matrix[1] = matrix[6] = matrix[11] = SkFloatToScalar(0.7152f); |
| matrix[2] = matrix[7] = matrix[12] = SkFloatToScalar(0.0722f); |
| matrix[18] = SkFloatToScalar(1.0f); |
| SkAutoTUnref<SkColorFilter> filter(new SkColorMatrixFilter(matrix)); |
| return SkColorFilterImageFilter::Create(filter, input, cropRect); |
| } |
| |
| static SkImageFilter* make_mode_blue(SkImageFilter* input = NULL) { |
| SkAutoTUnref<SkColorFilter> filter( |
| SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode)); |
| return SkColorFilterImageFilter::Create(filter, input); |
| } |
| |
| static void Test(skiatest::Reporter* reporter) { |
| { |
| // Check that two non-clipping color matrices concatenate into a single filter. |
| SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f)); |
| SkAutoTUnref<SkImageFilter> quarterBrightness(make_scale(0.5f, halfBrightness)); |
| REPORTER_ASSERT(reporter, NULL == quarterBrightness->getInput(0)); |
| } |
| |
| { |
| // Check that a clipping color matrix followed by a grayscale does not concatenate into a single filter. |
| SkAutoTUnref<SkImageFilter> doubleBrightness(make_scale(2.0f)); |
| SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f, doubleBrightness)); |
| REPORTER_ASSERT(reporter, NULL != halfBrightness->getInput(0)); |
| } |
| |
| { |
| // Check that a color filter image filter without a crop rect can be |
| // expressed as a color filter. |
| SkAutoTUnref<SkImageFilter> gray(make_grayscale()); |
| REPORTER_ASSERT(reporter, true == gray->asColorFilter(NULL)); |
| } |
| |
| { |
| // Check that a color filter image filter with a crop rect cannot |
| // be expressed as a color filter. |
| SkIRect cropRect = SkIRect::MakeXYWH(0, 0, 100, 100); |
| SkAutoTUnref<SkImageFilter> grayWithCrop(make_grayscale(NULL, &cropRect)); |
| REPORTER_ASSERT(reporter, false == grayWithCrop->asColorFilter(NULL)); |
| } |
| } |
| }; |
| |
| |
| #include "TestClassDef.h" |
| DEFINE_TESTCLASS("ImageFilterTest", ImageFilterTestClass, ImageFilterTest::Test) |