senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 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" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 9 | #include "include/core/SkBitmap.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 10 | #include "include/core/SkCanvas.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 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/SkImage.h" |
| 14 | #include "include/core/SkImageFilter.h" |
| 15 | #include "include/core/SkPaint.h" |
| 16 | #include "include/core/SkPoint.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 17 | #include "include/core/SkPoint3.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 18 | #include "include/core/SkRect.h" |
| 19 | #include "include/core/SkRefCnt.h" |
| 20 | #include "include/core/SkScalar.h" |
| 21 | #include "include/core/SkShader.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 22 | #include "include/core/SkSurface.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 23 | #include "include/core/SkTileMode.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 24 | #include "include/effects/SkGradientShader.h" |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 25 | #include "include/effects/SkImageFilters.h" |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 26 | |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 27 | #include <utility> |
| 28 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 29 | namespace { |
| 30 | |
| 31 | void make_checkerboard(SkBitmap* bitmap); |
| 32 | sk_sp<SkImage> make_gradient_circle(int width, int height); |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 33 | void draw(SkCanvas* canvas, const SkBitmap& bitmap, const SkIRect& rect, |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 34 | sk_sp<SkImageFilter> filter); |
| 35 | |
| 36 | }; |
| 37 | |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 38 | /////////////////////////////////////////////////////////////////////////////// |
| 39 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 40 | DEF_SIMPLE_GM(imagefilterscropexpand, canvas, 730, 650) { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 41 | SkIRect cropRect = SkIRect::MakeXYWH(10, 10, 44, 44); |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 42 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 43 | sk_sp<SkImage> gradientCircle(make_gradient_circle(64, 64)); |
| 44 | SkBitmap checkerboard; |
| 45 | make_checkerboard(&checkerboard); |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 46 | |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 47 | sk_sp<SkImageFilter> gradientCircleSource(SkImageFilters::Image(std::move(gradientCircle))); |
| 48 | sk_sp<SkImageFilter> noopCropped(SkImageFilters::Offset(0, 0, nullptr, &cropRect)); |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 49 | // This color matrix saturates the green component but only partly increases the opacity. |
| 50 | // For the opaque checkerboard, the opacity boost doesn't matter but it does impact the |
| 51 | // area outside the checkerboard. |
Mike Reed | e869a1e | 2019-04-30 12:18:54 -0400 | [diff] [blame] | 52 | float matrix[20] = { 1, 0, 0, 0, 0, |
| 53 | 0, 1, 0, 0, 1, |
| 54 | 0, 0, 1, 0, 0, |
| 55 | 0, 0, 0, 1, 32.0f/255 }; |
| 56 | sk_sp<SkColorFilter> cfAlphaTrans(SkColorFilters::Matrix(matrix)); |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 57 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 58 | SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64)); |
| 59 | SkScalar MARGIN = SkIntToScalar(12); |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 60 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 61 | SkPoint3 pointLocation = SkPoint3::Make(0, 0, SkIntToScalar(10)); |
| 62 | SkScalar kd = SkIntToScalar(2); |
| 63 | SkScalar surfaceScale = SkIntToScalar(1); |
| 64 | SkIRect bounds; |
| 65 | r.roundOut(&bounds); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 66 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 67 | SkPaint paint; |
| 68 | canvas->translate(MARGIN, MARGIN); |
| 69 | for (int outset = -15; outset <= 20; outset += 5) { |
| 70 | canvas->save(); |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 71 | SkIRect bigRect = cropRect; |
| 72 | bigRect.outset(outset, outset); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 73 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 74 | draw(canvas, checkerboard, bigRect, |
| 75 | SkImageFilters::ColorFilter(cfAlphaTrans, noopCropped, &bigRect)); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 76 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 77 | draw(canvas, checkerboard, bigRect, |
| 78 | SkImageFilters::Blur(0.3f, 0.3f, noopCropped, &bigRect)); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 79 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 80 | draw(canvas, checkerboard, bigRect, |
| 81 | SkImageFilters::Blur(8.0f, 8.0f, noopCropped, &bigRect)); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 82 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 83 | draw(canvas, checkerboard, bigRect, |
| 84 | SkImageFilters::Dilate(2, 2, noopCropped, &bigRect)); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 85 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 86 | draw(canvas, checkerboard, bigRect, |
| 87 | SkImageFilters::Erode(2, 2, noopCropped, &bigRect)); |
senorblanco | 84f0e74 | 2016-02-16 13:26:56 -0800 | [diff] [blame] | 88 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 89 | draw(canvas, checkerboard, bigRect, |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 90 | SkImageFilters::DropShadow(10, 10, 3, 3, SK_ColorBLUE, noopCropped, &bigRect)); |
robertphillips | 51a315e | 2016-03-31 09:05:49 -0700 | [diff] [blame] | 91 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 92 | draw(canvas, checkerboard, bigRect, |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 93 | SkImageFilters::DisplacementMap(SkColorChannel::kR, SkColorChannel::kR, 12, |
| 94 | gradientCircleSource, noopCropped, &bigRect)); |
robertphillips | 51a315e | 2016-03-31 09:05:49 -0700 | [diff] [blame] | 95 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 96 | draw(canvas, checkerboard, bigRect, |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 97 | SkImageFilters::Offset(SkIntToScalar(-8), SkIntToScalar(16), noopCropped, &bigRect)); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 98 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 99 | draw(canvas, checkerboard, bigRect, |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 100 | SkImageFilters::PointLitDiffuse(pointLocation, SK_ColorWHITE, surfaceScale, kd, |
| 101 | noopCropped, &bigRect)); |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 102 | |
| 103 | canvas->restore(); |
| 104 | canvas->translate(0, SkIntToScalar(80)); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 105 | } |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 106 | } |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 107 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 108 | namespace { |
| 109 | void make_checkerboard(SkBitmap* bitmap) { |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 110 | bitmap->allocN32Pixels(64, 64); |
| 111 | SkCanvas canvas(*bitmap); |
| 112 | canvas.clear(0xFFFF0000); |
| 113 | SkPaint darkPaint; |
Mike Klein | d46dce3 | 2018-08-16 10:17:03 -0400 | [diff] [blame] | 114 | darkPaint.setColor(0xFF404040); |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 115 | SkPaint lightPaint; |
Mike Klein | d46dce3 | 2018-08-16 10:17:03 -0400 | [diff] [blame] | 116 | lightPaint.setColor(0xFFA0A0A0); |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 117 | for (int y = 8; y < 48; y += 16) { |
| 118 | for (int x = 8; x < 48; x += 16) { |
| 119 | canvas.save(); |
| 120 | canvas.translate(SkIntToScalar(x), SkIntToScalar(y)); |
| 121 | canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint); |
| 122 | canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint); |
| 123 | canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint); |
| 124 | canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint); |
| 125 | canvas.restore(); |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | |
Stephen White | 930f69e | 2017-01-12 17:15:50 -0500 | [diff] [blame] | 130 | sk_sp<SkImage> make_gradient_circle(int width, int height) { |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 131 | SkScalar x = SkIntToScalar(width / 2); |
| 132 | SkScalar y = SkIntToScalar(height / 2); |
Brian Osman | 116b33e | 2020-02-05 13:34:09 -0500 | [diff] [blame] | 133 | SkScalar radius = std::min(x, y) * 0.8f; |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 134 | auto surface(SkSurface::MakeRasterN32Premul(width, height)); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 135 | SkCanvas* canvas = surface->getCanvas(); |
| 136 | canvas->clear(0x00000000); |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 137 | SkColor colors[2]; |
| 138 | colors[0] = SK_ColorWHITE; |
| 139 | colors[1] = SK_ColorBLACK; |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 140 | SkPaint paint; |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 141 | paint.setShader(SkGradientShader::MakeRadial(SkPoint::Make(x, y), radius, colors, nullptr, |
Mike Reed | fae8fce | 2019-04-03 10:27:45 -0400 | [diff] [blame] | 142 | 2, SkTileMode::kClamp)); |
fmalita | 5598b63 | 2015-09-15 11:26:13 -0700 | [diff] [blame] | 143 | canvas->drawCircle(x, y, radius, paint); |
| 144 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 145 | return surface->makeImageSnapshot(); |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 146 | } |
| 147 | |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 148 | void draw(SkCanvas* canvas, const SkBitmap& bitmap, const SkIRect& layerRect, |
robertphillips | 51a315e | 2016-03-31 09:05:49 -0700 | [diff] [blame] | 149 | sk_sp<SkImageFilter> filter) { |
Michael Ludwig | bf8439d | 2019-08-05 10:24:49 -0400 | [diff] [blame] | 150 | // Convert SkIRect to SkRect since that's what saveLayer and drawRect need |
| 151 | SkRect rect = SkRect::Make(layerRect); |
| 152 | |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 153 | SkPaint paint; |
robertphillips | 51a315e | 2016-03-31 09:05:49 -0700 | [diff] [blame] | 154 | paint.setImageFilter(std::move(filter)); |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 155 | canvas->saveLayer(&rect, &paint); |
| 156 | canvas->drawBitmap(bitmap, 0, 0); |
| 157 | canvas->restore(); |
skia.committer@gmail.com | f0f9f5f | 2014-03-15 03:02:32 +0000 | [diff] [blame] | 158 | |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 159 | SkPaint strokePaint; |
| 160 | strokePaint.setColor(0xFFFF0000); |
| 161 | strokePaint.setStyle(SkPaint::kStroke_Style); |
| 162 | canvas->drawRect(rect, strokePaint); |
| 163 | |
| 164 | canvas->translate(SkIntToScalar(80), 0); |
| 165 | } |
senorblanco@chromium.org | 1182529 | 2014-03-14 17:44:41 +0000 | [diff] [blame] | 166 | }; |