102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
/*
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* Copyright 2015 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 "SkBitmap.h"
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#include "SkCanvas.h"
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#include "SkColor.h"
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#include "SkColorMatrixFilter.h"
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#include "SkPaint.h"
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#include <stdlib.h>
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static inline void assert_color(skiatest::Reporter* reporter,
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SkColor expected, SkColor actual, int tolerance) {
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REPORTER_ASSERT(reporter, abs((int)(SkColorGetA(expected) - SkColorGetA(actual))) <= tolerance);
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REPORTER_ASSERT(reporter, abs((int)(SkColorGetR(expected) - SkColorGetR(actual))) <= tolerance);
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REPORTER_ASSERT(reporter, abs((int)(SkColorGetG(expected) - SkColorGetG(actual))) <= tolerance);
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REPORTER_ASSERT(reporter, abs((int)(SkColorGetB(expected) - SkColorGetB(actual))) <= tolerance);
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}
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static inline void assert_color(skiatest::Reporter* reporter, SkColor expected, SkColor actual) {
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const int TOLERANCE = 1;
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assert_color(reporter, expected, actual, TOLERANCE);
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}
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/**
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* This test case is a mirror of the Android CTS tests for MatrixColorFilter
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* found in the android.graphics.ColorMatrixColorFilterTest class.
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*/
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static inline void test_colorMatrixCTS(skiatest::Reporter* reporter) {
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SkBitmap bitmap;
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bitmap.allocN32Pixels(1,1);
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SkCanvas canvas(bitmap);
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SkPaint paint;
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SkScalar blueToCyan[20] = {
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1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 1.0f, 1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f, 0.0f };
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paint.setColorFilter(SkColorMatrixFilter::Create(blueToCyan))->unref();
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paint.setColor(SK_ColorBLUE);
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canvas.drawPoint(0, 0, paint);
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assert_color(reporter, SK_ColorCYAN, bitmap.getColor(0, 0));
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paint.setColor(SK_ColorGREEN);
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canvas.drawPoint(0, 0, paint);
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assert_color(reporter, SK_ColorGREEN, bitmap.getColor(0, 0));
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paint.setColor(SK_ColorRED);
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canvas.drawPoint(0, 0, paint);
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assert_color(reporter, SK_ColorRED, bitmap.getColor(0, 0));
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// color components are clipped, not scaled
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paint.setColor(SK_ColorMAGENTA);
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canvas.drawPoint(0, 0, paint);
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assert_color(reporter, SK_ColorWHITE, bitmap.getColor(0, 0));
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SkScalar transparentRedAddBlue[20] = {
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1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f, 64.0f,
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-0.5f, 0.0f, 0.0f, 1.0f, 0.0f
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};
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paint.setColorFilter(SkColorMatrixFilter::Create(transparentRedAddBlue))->unref();
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bitmap.eraseColor(SK_ColorTRANSPARENT);
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paint.setColor(SK_ColorRED);
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canvas.drawPoint(0, 0, paint);
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assert_color(reporter, SkColorSetARGB(128, 255, 0, 64), bitmap.getColor(0, 0), 2);
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paint.setColor(SK_ColorCYAN);
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canvas.drawPoint(0, 0, paint);
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// blue gets clipped
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assert_color(reporter, SK_ColorCYAN, bitmap.getColor(0, 0));
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// change array to filter out green
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REPORTER_ASSERT(reporter, 1.0f == transparentRedAddBlue[6]);
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transparentRedAddBlue[6] = 0.0f;
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// check that changing the array has no effect
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canvas.drawPoint(0, 0, paint);
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assert_color(reporter, SK_ColorCYAN, bitmap.getColor(0, 0));
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// create a new filter with the changed matrix
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paint.setColorFilter(SkColorMatrixFilter::Create(transparentRedAddBlue))->unref();
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canvas.drawPoint(0, 0, paint);
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assert_color(reporter, SK_ColorBLUE, bitmap.getColor(0, 0));
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}
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DEF_TEST(ColorMatrix, reporter) {
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test_colorMatrixCTS(reporter);
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}
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