Matt Sarett | a9fd106 | 2016-10-28 13:25:40 -0400 | [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 | |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 8 | #include "gm/gm.h" |
| 9 | #include "include/core/SkBitmap.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 10 | #include "include/core/SkCanvas.h" |
| 11 | #include "include/core/SkColor.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 12 | #include "include/core/SkColorFilter.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 13 | #include "include/core/SkImageInfo.h" |
| 14 | #include "include/core/SkPaint.h" |
| 15 | #include "include/core/SkSize.h" |
| 16 | #include "include/core/SkString.h" |
Matt Sarett | a9fd106 | 2016-10-28 13:25:40 -0400 | [diff] [blame] | 17 | |
| 18 | class ColorFilterAlpha8 : public skiagm::GM { |
| 19 | public: |
| 20 | ColorFilterAlpha8() {} |
| 21 | |
| 22 | protected: |
| 23 | SkString onShortName() override { |
| 24 | return SkString("colorfilteralpha8"); |
| 25 | } |
| 26 | |
| 27 | SkISize onISize() override { |
| 28 | return SkISize::Make(400, 400); |
| 29 | } |
| 30 | |
| 31 | void onDraw(SkCanvas* canvas) override { |
| 32 | canvas->clear(SK_ColorRED); |
| 33 | |
| 34 | SkBitmap bitmap; |
| 35 | SkImageInfo info = SkImageInfo::MakeA8(200, 200); |
| 36 | bitmap.allocPixels(info); |
| 37 | bitmap.eraseColor(0x88FFFFFF); |
| 38 | |
| 39 | SkPaint paint; |
| 40 | float opaqueGrayMatrix[20] = { |
| 41 | 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, |
| 42 | 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, |
| 43 | 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, |
Mike Reed | e869a1e | 2019-04-30 12:18:54 -0400 | [diff] [blame] | 44 | 0.0f, 0.0f, 0.0f, 0.0f, 1.0f |
Matt Sarett | a9fd106 | 2016-10-28 13:25:40 -0400 | [diff] [blame] | 45 | }; |
Mike Reed | e869a1e | 2019-04-30 12:18:54 -0400 | [diff] [blame] | 46 | paint.setColorFilter(SkColorFilters::Matrix(opaqueGrayMatrix)); |
Matt Sarett | a9fd106 | 2016-10-28 13:25:40 -0400 | [diff] [blame] | 47 | |
| 48 | canvas->drawBitmap(bitmap, 100.0f, 100.0f, &paint); |
| 49 | } |
| 50 | |
| 51 | private: |
| 52 | typedef skiagm::GM INHERITED; |
| 53 | }; |
| 54 | DEF_GM( return new ColorFilterAlpha8; ) |