reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015 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 "gm.h" |
| 9 | #include "SkImageFilter.h" |
| 10 | #include "SkColorMatrixFilter.h" |
| 11 | |
| 12 | /** |
| 13 | * Test drawing a primitive w/ an imagefilter (in this case, just matrix w/ identity) to see |
| 14 | * that we apply the xfermode *after* the image has been created and filtered, and not during |
| 15 | * the creation step (i.e. before it is filtered). |
| 16 | * |
| 17 | * see skbug.com/3741 |
| 18 | */ |
| 19 | class ImageFilterXfermodeTestGM : public skiagm::GM { |
| 20 | protected: |
| 21 | SkString onShortName() override { |
| 22 | return SkString("imagefilters_xfermodes"); |
| 23 | } |
| 24 | |
| 25 | SkISize onISize() override { return SkISize::Make(480, 480); } |
| 26 | |
| 27 | void doDraw(SkCanvas* canvas, SkXfermode::Mode mode, SkImageFilter* imf) { |
| 28 | SkPaint paint; |
| 29 | paint.setAntiAlias(true); |
| 30 | |
| 31 | SkRect r0 = SkRect::MakeXYWH(10, 60, 200, 100); |
| 32 | SkRect r1 = SkRect::MakeXYWH(60, 10, 100, 200); |
| 33 | |
| 34 | paint.setColor(SK_ColorRED); |
| 35 | canvas->drawOval(r0, paint); |
| 36 | |
| 37 | paint.setColor(0x800000FF); |
| 38 | paint.setImageFilter(imf); |
| 39 | paint.setXfermodeMode(mode); |
| 40 | canvas->drawOval(r1, paint); |
| 41 | } |
| 42 | |
| 43 | void onDraw(SkCanvas* canvas) override { |
| 44 | // just need an imagefilter to trigger the code-path (which creates a tmp layer) |
| 45 | SkAutoTUnref<SkImageFilter> imf(SkImageFilter::CreateMatrixFilter(SkMatrix::I(), |
| 46 | kNone_SkFilterQuality)); |
| 47 | |
| 48 | const SkXfermode::Mode modes[] = { |
| 49 | SkXfermode::kSrcATop_Mode, SkXfermode::kDstIn_Mode |
| 50 | }; |
| 51 | |
| 52 | for (size_t i = 0; i < SK_ARRAY_COUNT(modes); ++i) { |
| 53 | canvas->save(); |
| 54 | this->doDraw(canvas, modes[i], NULL); |
| 55 | canvas->translate(250, 0); |
| 56 | this->doDraw(canvas, modes[i], imf); |
| 57 | canvas->restore(); |
| 58 | |
| 59 | canvas->translate(0, 250); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | private: |
| 64 | typedef GM INHERITED; |
| 65 | }; |
| 66 | DEF_GM( return new ImageFilterXfermodeTestGM; ) |
| 67 | |