ajuma | 77b6ba3 | 2016-01-08 14:58:35 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 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 "SkGradientShader.h" |
| 10 | #include "SkPaintImageFilter.h" |
| 11 | #include "SkShader.h" |
| 12 | #include "Test.h" |
| 13 | |
| 14 | static void test_unscaled(skiatest::Reporter* reporter) { |
| 15 | int w = 10, h = 10; |
| 16 | SkRect r = SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h)); |
| 17 | |
| 18 | SkBitmap filterResult, paintResult; |
| 19 | |
| 20 | filterResult.allocN32Pixels(w, h); |
| 21 | SkCanvas canvasFilter(filterResult); |
| 22 | canvasFilter.clear(0x00000000); |
| 23 | |
| 24 | paintResult.allocN32Pixels(w, h); |
| 25 | SkCanvas canvasPaint(paintResult); |
| 26 | canvasPaint.clear(0x00000000); |
| 27 | |
| 28 | SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5)); |
| 29 | SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN}; |
| 30 | SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1}; |
| 31 | SkScalar radius = SkIntToScalar(5); |
| 32 | |
reed | 9283d20 | 2016-03-13 13:01:57 -0700 | [diff] [blame] | 33 | SkPaint gradientPaint; |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 34 | gradientPaint.setShader(SkGradientShader::MakeRadial( |
| 35 | center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode)); |
ajuma | 77b6ba3 | 2016-01-08 14:58:35 -0800 | [diff] [blame] | 36 | |
| 37 | // Test using the image filter |
| 38 | { |
| 39 | SkPaint paint; |
| 40 | SkImageFilter::CropRect cr(r); |
robertphillips | 372177e | 2016-03-30 07:32:28 -0700 | [diff] [blame] | 41 | paint.setImageFilter(SkPaintImageFilter::Make(gradientPaint, &cr)); |
ajuma | 77b6ba3 | 2016-01-08 14:58:35 -0800 | [diff] [blame] | 42 | canvasFilter.drawRect(r, paint); |
| 43 | } |
| 44 | |
| 45 | // Test using the paint directly |
| 46 | { |
| 47 | canvasPaint.drawRect(r, gradientPaint); |
| 48 | } |
| 49 | |
| 50 | // Assert that both paths yielded the same result |
| 51 | for (int y = 0; y < r.height(); ++y) { |
| 52 | const SkPMColor* filterPtr = filterResult.getAddr32(0, y); |
| 53 | const SkPMColor* paintPtr = paintResult.getAddr32(0, y); |
| 54 | for (int x = 0; x < r.width(); ++x, ++filterPtr, ++paintPtr) { |
| 55 | REPORTER_ASSERT(reporter, *filterPtr == *paintPtr); |
| 56 | } |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | static void test_scaled(skiatest::Reporter* reporter) { |
| 61 | int w = 10, h = 10; |
| 62 | SkRect r = SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h)); |
| 63 | |
| 64 | SkBitmap filterResult, paintResult; |
| 65 | |
| 66 | filterResult.allocN32Pixels(w, h); |
| 67 | SkCanvas canvasFilter(filterResult); |
| 68 | canvasFilter.clear(0x00000000); |
| 69 | |
| 70 | paintResult.allocN32Pixels(w, h); |
| 71 | SkCanvas canvasPaint(paintResult); |
| 72 | canvasPaint.clear(0x00000000); |
| 73 | |
| 74 | SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5)); |
| 75 | SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN}; |
| 76 | SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1}; |
| 77 | SkScalar radius = SkIntToScalar(5); |
| 78 | |
reed | 9283d20 | 2016-03-13 13:01:57 -0700 | [diff] [blame] | 79 | SkPaint gradientPaint; |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 80 | gradientPaint.setShader(SkGradientShader::MakeRadial( |
| 81 | center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode)); |
ajuma | 77b6ba3 | 2016-01-08 14:58:35 -0800 | [diff] [blame] | 82 | |
| 83 | // Test using the image filter |
| 84 | { |
| 85 | SkPaint paint; |
| 86 | SkImageFilter::CropRect cr(r); |
robertphillips | 372177e | 2016-03-30 07:32:28 -0700 | [diff] [blame] | 87 | paint.setImageFilter(SkPaintImageFilter::Make(gradientPaint, &cr)); |
ajuma | 77b6ba3 | 2016-01-08 14:58:35 -0800 | [diff] [blame] | 88 | canvasFilter.scale(SkIntToScalar(2), SkIntToScalar(2)); |
| 89 | canvasFilter.drawRect(r, paint); |
| 90 | } |
| 91 | |
| 92 | // Test using the paint directly |
| 93 | { |
| 94 | canvasPaint.scale(SkIntToScalar(2), SkIntToScalar(2)); |
| 95 | canvasPaint.drawRect(r, gradientPaint); |
| 96 | } |
| 97 | |
| 98 | // Assert that both paths yielded the same result |
| 99 | for (int y = 0; y < r.height(); ++y) { |
| 100 | const SkPMColor* filterPtr = filterResult.getAddr32(0, y); |
| 101 | const SkPMColor* paintPtr = paintResult.getAddr32(0, y); |
| 102 | for (int x = 0; x < r.width(); ++x, ++filterPtr, ++paintPtr) { |
| 103 | REPORTER_ASSERT(reporter, *filterPtr == *paintPtr); |
| 104 | } |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | DEF_TEST(PaintImageFilter, reporter) { |
| 109 | test_unscaled(reporter); |
| 110 | test_scaled(reporter); |
| 111 | } |