5c561cb8d8
git-svn-id: http://skia.googlecode.com/svn/trunk@10340 2bbb7eff-a529-9590-31e7-b0007b416f81
79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
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/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Test.h"
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#include "SkColorMatrixFilter.h"
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#include "SkColorFilterImageFilter.h"
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#include "SkRect.h"
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class ImageFilterTest {
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public:
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static SkImageFilter* make_scale(float amount, SkImageFilter* input = NULL) {
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SkScalar s = SkFloatToScalar(amount);
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SkScalar matrix[20] = { s, 0, 0, 0, 0,
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0, s, 0, 0, 0,
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0, 0, s, 0, 0,
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0, 0, 0, s, 0 };
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SkAutoTUnref<SkColorFilter> filter(new SkColorMatrixFilter(matrix));
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return SkColorFilterImageFilter::Create(filter, input);
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}
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static SkImageFilter* make_grayscale(SkImageFilter* input = NULL, const SkIRect* cropRect = NULL) {
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SkScalar matrix[20];
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memset(matrix, 0, 20 * sizeof(SkScalar));
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matrix[0] = matrix[5] = matrix[10] = SkFloatToScalar(0.2126f);
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matrix[1] = matrix[6] = matrix[11] = SkFloatToScalar(0.7152f);
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matrix[2] = matrix[7] = matrix[12] = SkFloatToScalar(0.0722f);
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matrix[18] = SkFloatToScalar(1.0f);
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SkAutoTUnref<SkColorFilter> filter(new SkColorMatrixFilter(matrix));
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return SkColorFilterImageFilter::Create(filter, input, cropRect);
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}
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static SkImageFilter* make_mode_blue(SkImageFilter* input = NULL) {
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SkAutoTUnref<SkColorFilter> filter(
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SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode));
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return SkColorFilterImageFilter::Create(filter, input);
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}
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static void Test(skiatest::Reporter* reporter) {
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{
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// Check that two non-clipping color matrices concatenate into a single filter.
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SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f));
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SkAutoTUnref<SkImageFilter> quarterBrightness(make_scale(0.5f, halfBrightness));
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REPORTER_ASSERT(reporter, NULL == quarterBrightness->getInput(0));
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}
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{
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// Check that a clipping color matrix followed by a grayscale does not concatenate into a single filter.
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SkAutoTUnref<SkImageFilter> doubleBrightness(make_scale(2.0f));
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SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f, doubleBrightness));
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REPORTER_ASSERT(reporter, NULL != halfBrightness->getInput(0));
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}
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{
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// Check that a color filter image filter without a crop rect can be
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// expressed as a color filter.
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SkAutoTUnref<SkImageFilter> gray(make_grayscale());
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REPORTER_ASSERT(reporter, true == gray->asColorFilter(NULL));
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}
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{
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// Check that a color filter image filter with a crop rect cannot
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// be expressed as a color filter.
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SkIRect cropRect = SkIRect::MakeXYWH(0, 0, 100, 100);
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SkAutoTUnref<SkImageFilter> grayWithCrop(make_grayscale(NULL, &cropRect));
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REPORTER_ASSERT(reporter, false == grayWithCrop->asColorFilter(NULL));
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}
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}
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};
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#include "TestClassDef.h"
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DEFINE_TESTCLASS("ImageFilterTest", ImageFilterTestClass, ImageFilterTest::Test)
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