senorblanco | 20311d4 | 2015-10-14 04:53:31 -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 "SkCanvas.h" |
| 10 | #include "SkBlurImageFilter.h" |
| 11 | #include "SkColorFilterImageFilter.h" |
| 12 | #include "SkModeColorFilter.h" |
| 13 | #include "SkMorphologyImageFilter.h" |
| 14 | #include "SkOffsetImageFilter.h" |
| 15 | #include "SkSurface.h" |
| 16 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 17 | static sk_sp<SkImage> make_image(SkCanvas* rootCanvas) { |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 18 | SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame^] | 19 | auto surface(rootCanvas->makeSurface(info)); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 20 | if (!surface) { |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame^] | 21 | surface = SkSurface::MakeRaster(info); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 22 | } |
| 23 | |
| 24 | SkPaint paint; |
| 25 | paint.setAntiAlias(true); |
| 26 | paint.setColor(SK_ColorRED); |
| 27 | surface->getCanvas()->drawCircle(50, 50, 50, paint); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 28 | return surface->makeImageSnapshot(); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 29 | } |
| 30 | |
| 31 | typedef SkImageFilter* (*ImageFilterFactory)(); |
| 32 | |
| 33 | // +[]{...} did not work on windows (VS) |
| 34 | // (ImageFilterFactory)[]{...} did not work on linux (gcc) |
| 35 | // hence this cast function |
| 36 | template <typename T> ImageFilterFactory IFCCast(T arg) { return arg; } |
| 37 | |
| 38 | // Show the effect of localmatriximagefilter with various matrices, on various filters |
| 39 | class LocalMatrixImageFilterGM : public skiagm::GM { |
| 40 | public: |
| 41 | LocalMatrixImageFilterGM() {} |
| 42 | |
| 43 | protected: |
| 44 | SkString onShortName() override { |
| 45 | return SkString("localmatriximagefilter"); |
| 46 | } |
| 47 | |
| 48 | SkISize onISize() override { |
| 49 | return SkISize::Make(640, 640); |
| 50 | } |
| 51 | |
| 52 | static void show_image(SkCanvas* canvas, SkImage* image, SkImageFilter* filter) { |
| 53 | SkPaint paint; |
| 54 | paint.setStyle(SkPaint::kStroke_Style); |
| 55 | SkRect r = SkRect::MakeIWH(image->width(), image->height()).makeOutset(SK_ScalarHalf, |
| 56 | SK_ScalarHalf); |
| 57 | canvas->drawRect(r, paint); |
| 58 | |
| 59 | paint.setStyle(SkPaint::kFill_Style); |
| 60 | paint.setImageFilter(filter); |
| 61 | canvas->drawImage(image, 0, 0, &paint); |
| 62 | } |
| 63 | |
| 64 | void onDraw(SkCanvas* canvas) override { |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 65 | sk_sp<SkImage> image0(make_image(canvas)); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 66 | |
| 67 | const ImageFilterFactory factories[] = { |
| 68 | IFCCast([]{ return SkBlurImageFilter::Create(8, 8); }), |
| 69 | IFCCast([]{ return SkDilateImageFilter::Create(8, 8); }), |
| 70 | IFCCast([]{ return SkErodeImageFilter::Create(8, 8); }), |
| 71 | IFCCast([]{ return SkOffsetImageFilter::Create(8, 8); }), |
| 72 | }; |
| 73 | |
| 74 | const SkMatrix matrices[] = { |
| 75 | SkMatrix::MakeScale(SK_ScalarHalf, SK_ScalarHalf), |
| 76 | SkMatrix::MakeScale(2, 2), |
| 77 | SkMatrix::MakeTrans(10, 10) |
| 78 | }; |
| 79 | |
| 80 | const SkScalar spacer = image0->width() * 3.0f / 2; |
| 81 | |
| 82 | canvas->translate(40, 40); |
| 83 | for (auto&& factory : factories) { |
| 84 | SkAutoTUnref<SkImageFilter> filter(factory()); |
| 85 | |
| 86 | canvas->save(); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 87 | show_image(canvas, image0.get(), filter); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 88 | for (const auto& matrix : matrices) { |
reed | 94dd7a5 | 2015-10-14 07:49:35 -0700 | [diff] [blame] | 89 | SkAutoTUnref<SkImageFilter> localFilter(filter->newWithLocalMatrix(matrix)); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 90 | canvas->translate(spacer, 0); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 91 | show_image(canvas, image0.get(), localFilter); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 92 | } |
| 93 | canvas->restore(); |
| 94 | canvas->translate(0, spacer); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | private: |
| 99 | typedef GM INHERITED; |
| 100 | }; |
| 101 | DEF_GM( return new LocalMatrixImageFilterGM; ) |
| 102 | |