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 | |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 8 | #include "gm/gm.h" |
| 9 | #include "include/core/SkCanvas.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 10 | #include "include/core/SkColor.h" |
| 11 | #include "include/core/SkImage.h" |
| 12 | #include "include/core/SkImageFilter.h" |
| 13 | #include "include/core/SkImageInfo.h" |
| 14 | #include "include/core/SkMatrix.h" |
| 15 | #include "include/core/SkPaint.h" |
| 16 | #include "include/core/SkRect.h" |
| 17 | #include "include/core/SkRefCnt.h" |
| 18 | #include "include/core/SkScalar.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 19 | #include "include/core/SkSurface.h" |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 20 | #include "include/effects/SkImageFilters.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 21 | #include "tools/ToolUtils.h" |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 22 | |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 23 | #include <utility> |
| 24 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 25 | static sk_sp<SkImage> make_image(SkCanvas* rootCanvas) { |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 26 | SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); |
Mike Klein | ea3f014 | 2019-03-20 11:12:10 -0500 | [diff] [blame] | 27 | auto surface(ToolUtils::makeSurface(rootCanvas, info)); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 28 | |
| 29 | SkPaint paint; |
| 30 | paint.setAntiAlias(true); |
| 31 | paint.setColor(SK_ColorRED); |
| 32 | surface->getCanvas()->drawCircle(50, 50, 50, paint); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 33 | return surface->makeImageSnapshot(); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 34 | } |
| 35 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 36 | static void show_image(SkCanvas* canvas, SkImage* image, sk_sp<SkImageFilter> filter) { |
| 37 | SkPaint paint; |
| 38 | paint.setStyle(SkPaint::kStroke_Style); |
| 39 | SkRect r = SkRect::MakeIWH(image->width(), image->height()).makeOutset(SK_ScalarHalf, |
| 40 | SK_ScalarHalf); |
| 41 | canvas->drawRect(r, paint); |
| 42 | |
| 43 | paint.setStyle(SkPaint::kFill_Style); |
| 44 | paint.setImageFilter(filter); |
| 45 | canvas->drawImage(image, 0, 0, &paint); |
| 46 | } |
| 47 | |
robertphillips | fc11b0a | 2016-04-05 09:09:36 -0700 | [diff] [blame] | 48 | typedef sk_sp<SkImageFilter> (*ImageFilterFactory)(); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 49 | |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 50 | // Show the effect of localmatriximagefilter with various matrices, on various filters |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 51 | DEF_SIMPLE_GM(localmatriximagefilter, canvas, 640, 640) { |
| 52 | sk_sp<SkImage> image0(make_image(canvas)); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 53 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 54 | const ImageFilterFactory factories[] = { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 55 | []{ return SkImageFilters::Blur(8, 8, nullptr); }, |
| 56 | []{ return SkImageFilters::Dilate(8, 8, nullptr); }, |
| 57 | []{ return SkImageFilters::Erode(8, 8, nullptr); }, |
| 58 | []{ return SkImageFilters::Offset(8, 8, nullptr); }, |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 59 | }; |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 60 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 61 | const SkMatrix matrices[] = { |
| 62 | SkMatrix::MakeScale(SK_ScalarHalf, SK_ScalarHalf), |
| 63 | SkMatrix::MakeScale(2, 2), |
| 64 | SkMatrix::MakeTrans(10, 10) |
| 65 | }; |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 66 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 67 | const SkScalar spacer = image0->width() * 3.0f / 2; |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 68 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 69 | canvas->translate(40, 40); |
| 70 | for (auto&& factory : factories) { |
| 71 | sk_sp<SkImageFilter> filter(factory()); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 72 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 73 | canvas->save(); |
| 74 | show_image(canvas, image0.get(), filter); |
| 75 | for (const auto& matrix : matrices) { |
| 76 | sk_sp<SkImageFilter> localFilter(filter->makeWithLocalMatrix(matrix)); |
| 77 | canvas->translate(spacer, 0); |
| 78 | show_image(canvas, image0.get(), std::move(localFilter)); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 79 | } |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 80 | canvas->restore(); |
| 81 | canvas->translate(0, spacer); |
senorblanco | 20311d4 | 2015-10-14 04:53:31 -0700 | [diff] [blame] | 82 | } |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 83 | } |