OLD | NEW |
(Empty) | |
| 1 |
| 2 /* |
| 3 * Copyright 2013 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 |
| 9 #include "Test.h" |
| 10 #include "SkColorMatrixFilter.h" |
| 11 #include "SkColorFilterImageFilter.h" |
| 12 #include "SkRect.h" |
| 13 |
| 14 class ImageFilterTest { |
| 15 public: |
| 16 |
| 17 static SkImageFilter* make_scale(float amount, SkImageFilter* input = NULL)
{ |
| 18 SkScalar s = SkFloatToScalar(amount); |
| 19 SkScalar matrix[20] = { s, 0, 0, 0, 0, |
| 20 0, s, 0, 0, 0, |
| 21 0, 0, s, 0, 0, |
| 22 0, 0, 0, s, 0 }; |
| 23 SkAutoTUnref<SkColorFilter> filter(new SkColorMatrixFilter(matrix)); |
| 24 return SkColorFilterImageFilter::Create(filter, input); |
| 25 } |
| 26 |
| 27 static SkImageFilter* make_grayscale(SkImageFilter* input = NULL, const SkIR
ect* cropRect = NULL) { |
| 28 SkScalar matrix[20]; |
| 29 memset(matrix, 0, 20 * sizeof(SkScalar)); |
| 30 matrix[0] = matrix[5] = matrix[10] = SkFloatToScalar(0.2126f); |
| 31 matrix[1] = matrix[6] = matrix[11] = SkFloatToScalar(0.7152f); |
| 32 matrix[2] = matrix[7] = matrix[12] = SkFloatToScalar(0.0722f); |
| 33 matrix[18] = SkFloatToScalar(1.0f); |
| 34 SkAutoTUnref<SkColorFilter> filter(new SkColorMatrixFilter(matrix)); |
| 35 return SkColorFilterImageFilter::Create(filter, input, cropRect); |
| 36 } |
| 37 |
| 38 static SkImageFilter* make_mode_blue(SkImageFilter* input = NULL) { |
| 39 SkAutoTUnref<SkColorFilter> filter( |
| 40 SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mod
e)); |
| 41 return SkColorFilterImageFilter::Create(filter, input); |
| 42 } |
| 43 |
| 44 static void Test(skiatest::Reporter* reporter) { |
| 45 { |
| 46 // Check that two non-clipping color matrices concatenate into a sin
gle filter. |
| 47 SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f)); |
| 48 SkAutoTUnref<SkImageFilter> quarterBrightness(make_scale(0.5f, halfB
rightness)); |
| 49 REPORTER_ASSERT(reporter, NULL == quarterBrightness->getInput(0)); |
| 50 } |
| 51 |
| 52 { |
| 53 // Check that a clipping color matrix followed by a grayscale does n
ot concatenate into a single filter. |
| 54 SkAutoTUnref<SkImageFilter> doubleBrightness(make_scale(2.0f)); |
| 55 SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f, doubleBr
ightness)); |
| 56 REPORTER_ASSERT(reporter, NULL != halfBrightness->getInput(0)); |
| 57 } |
| 58 |
| 59 { |
| 60 // Check that a color filter image filter without a crop rect can be |
| 61 // expressed as a color filter. |
| 62 SkAutoTUnref<SkImageFilter> gray(make_grayscale()); |
| 63 REPORTER_ASSERT(reporter, true == gray->asColorFilter(NULL)); |
| 64 } |
| 65 |
| 66 { |
| 67 // Check that a color filter image filter with a crop rect cannot |
| 68 // be expressed as a color filter. |
| 69 SkIRect cropRect = SkIRect::MakeXYWH(0, 0, 100, 100); |
| 70 SkAutoTUnref<SkImageFilter> grayWithCrop(make_grayscale(NULL, &cropR
ect)); |
| 71 REPORTER_ASSERT(reporter, false == grayWithCrop->asColorFilter(NULL)
); |
| 72 } |
| 73 } |
| 74 }; |
| 75 |
| 76 |
| 77 #include "TestClassDef.h" |
| 78 DEFINE_TESTCLASS("ImageFilterTest", ImageFilterTestClass, ImageFilterTest::Test) |
OLD | NEW |