senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 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" |
Mike Klein | 33d2055 | 2017-03-22 13:47:51 -0400 | [diff] [blame] | 9 | #include "sk_tool_utils.h" |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 10 | |
| 11 | #include "SkPictureImageFilter.h" |
robertphillips@google.com | 770963f | 2014-04-18 18:04:41 +0000 | [diff] [blame] | 12 | #include "SkPictureRecorder.h" |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 13 | |
Mike Reed | 77e487d | 2017-11-09 21:50:20 +0000 | [diff] [blame] | 14 | #include "SkImage.h" |
| 15 | #include "SkImageSource.h" |
| 16 | |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 17 | // This GM exercises the SkPictureImageFilter ImageFilter class. |
| 18 | |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 19 | static void fill_rect_filtered(SkCanvas* canvas, |
| 20 | const SkRect& clipRect, |
| 21 | sk_sp<SkImageFilter> filter) { |
| 22 | SkPaint paint; |
| 23 | paint.setImageFilter(filter); |
| 24 | canvas->save(); |
| 25 | canvas->clipRect(clipRect); |
| 26 | canvas->drawPaint(paint); |
| 27 | canvas->restore(); |
| 28 | } |
| 29 | |
| 30 | static sk_sp<SkPicture> make_picture() { |
| 31 | SkPictureRecorder recorder; |
| 32 | SkCanvas* canvas = recorder.beginRecording(100, 100, nullptr, 0); |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 33 | SkPaint paint; |
| 34 | paint.setAntiAlias(true); |
| 35 | sk_tool_utils::set_portable_typeface(&paint); |
| 36 | paint.setColor(0xFFFFFFFF); |
| 37 | paint.setTextSize(SkIntToScalar(96)); |
| 38 | const char* str = "e"; |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 39 | canvas->drawString(str, SkIntToScalar(20), SkIntToScalar(70), paint); |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 40 | return recorder.finishRecordingAsPicture(); |
| 41 | } |
| 42 | |
robertphillips | 54ef1a7 | 2016-04-13 10:55:07 -0700 | [diff] [blame] | 43 | // Create a picture that will draw LCD text |
| 44 | static sk_sp<SkPicture> make_LCD_picture() { |
| 45 | SkPictureRecorder recorder; |
| 46 | SkCanvas* canvas = recorder.beginRecording(100, 100, nullptr, 0); |
| 47 | canvas->clear(SK_ColorTRANSPARENT); |
| 48 | SkPaint paint; |
| 49 | paint.setLCDRenderText(true); // want LCD |
| 50 | paint.setAntiAlias(true); // need AA for LCD |
| 51 | sk_tool_utils::set_portable_typeface(&paint); |
| 52 | paint.setColor(0xFFFFFFFF); |
| 53 | // this has to be small enough that it doesn't become a path |
| 54 | paint.setTextSize(SkIntToScalar(36)); |
| 55 | const char* str = "e"; |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 56 | canvas->drawString(str, SkIntToScalar(20), SkIntToScalar(70), paint); |
robertphillips | 54ef1a7 | 2016-04-13 10:55:07 -0700 | [diff] [blame] | 57 | return recorder.finishRecordingAsPicture(); |
| 58 | } |
| 59 | |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 60 | class PictureImageFilterGM : public skiagm::GM { |
| 61 | public: |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 62 | PictureImageFilterGM() { } |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 63 | |
| 64 | protected: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 65 | SkString onShortName() override { |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 66 | return SkString("pictureimagefilter"); |
| 67 | } |
| 68 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 69 | SkISize onISize() override { return SkISize::Make(600, 300); } |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 70 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 71 | void onOnceBeforeDraw() override { |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 72 | fPicture = make_picture(); |
robertphillips | 54ef1a7 | 2016-04-13 10:55:07 -0700 | [diff] [blame] | 73 | fLCDPicture = make_LCD_picture(); |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 74 | } |
| 75 | |
Mike Reed | 77e487d | 2017-11-09 21:50:20 +0000 | [diff] [blame] | 76 | sk_sp<SkImageFilter> make(sk_sp<SkPicture> pic, SkRect r, SkFilterQuality fq) { |
| 77 | SkISize dim = { SkScalarRoundToInt(r.width()), SkScalarRoundToInt(r.height()) }; |
| 78 | auto img = SkImage::MakeFromPicture(pic, dim, nullptr, nullptr, |
| 79 | SkImage::BitDepth::kU8, SkColorSpace::MakeSRGB()); |
| 80 | return SkImageSource::Make(img, r, r, fq); |
| 81 | } |
| 82 | sk_sp<SkImageFilter> make(SkFilterQuality fq) { |
| 83 | return make(fPicture, fPicture->cullRect(), fq); |
| 84 | } |
| 85 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 86 | void onDraw(SkCanvas* canvas) override { |
robertphillips | 54ef1a7 | 2016-04-13 10:55:07 -0700 | [diff] [blame] | 87 | canvas->clear(SK_ColorGRAY); |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 88 | { |
| 89 | SkRect srcRect = SkRect::MakeXYWH(20, 20, 30, 30); |
| 90 | SkRect emptyRect = SkRect::MakeXYWH(20, 20, 0, 0); |
| 91 | SkRect bounds = SkRect::MakeXYWH(0, 0, 100, 100); |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 92 | sk_sp<SkImageFilter> pictureSource(SkPictureImageFilter::Make(fPicture)); |
| 93 | sk_sp<SkImageFilter> pictureSourceSrcRect(SkPictureImageFilter::Make(fPicture, |
| 94 | srcRect)); |
| 95 | sk_sp<SkImageFilter> pictureSourceEmptyRect(SkPictureImageFilter::Make(fPicture, |
| 96 | emptyRect)); |
Mike Reed | 77e487d | 2017-11-09 21:50:20 +0000 | [diff] [blame] | 97 | sk_sp<SkImageFilter> pictureSourceResampled = make(kLow_SkFilterQuality); |
| 98 | sk_sp<SkImageFilter> pictureSourcePixelated = make(kNone_SkFilterQuality); |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 99 | |
Justin Novosad | 5234075 | 2014-12-02 14:50:56 -0500 | [diff] [blame] | 100 | canvas->save(); |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 101 | // Draw the picture unscaled. |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 102 | fill_rect_filtered(canvas, bounds, pictureSource); |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 103 | canvas->translate(SkIntToScalar(100), 0); |
| 104 | |
| 105 | // Draw an unscaled subset of the source picture. |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 106 | fill_rect_filtered(canvas, bounds, pictureSourceSrcRect); |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 107 | canvas->translate(SkIntToScalar(100), 0); |
| 108 | |
| 109 | // Draw the picture to an empty rect (should draw nothing). |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 110 | fill_rect_filtered(canvas, bounds, pictureSourceEmptyRect); |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 111 | canvas->translate(SkIntToScalar(100), 0); |
Justin Novosad | 5234075 | 2014-12-02 14:50:56 -0500 | [diff] [blame] | 112 | |
robertphillips | 54ef1a7 | 2016-04-13 10:55:07 -0700 | [diff] [blame] | 113 | // Draw the LCD picture to a layer |
| 114 | { |
| 115 | SkPaint stroke; |
| 116 | stroke.setStyle(SkPaint::kStroke_Style); |
| 117 | |
| 118 | canvas->drawRect(bounds, stroke); |
| 119 | |
| 120 | SkPaint paint; |
Mike Reed | 77e487d | 2017-11-09 21:50:20 +0000 | [diff] [blame] | 121 | paint.setImageFilter(make(fLCDPicture, fPicture->cullRect(), kNone_SkFilterQuality)); |
robertphillips | 54ef1a7 | 2016-04-13 10:55:07 -0700 | [diff] [blame] | 122 | |
| 123 | canvas->scale(4, 4); |
| 124 | canvas->translate(-0.9f*srcRect.fLeft, -2.45f*srcRect.fTop); |
| 125 | |
| 126 | canvas->saveLayerPreserveLCDTextRequests(&bounds, &paint); |
| 127 | canvas->restore(); |
| 128 | } |
| 129 | |
Justin Novosad | 5234075 | 2014-12-02 14:50:56 -0500 | [diff] [blame] | 130 | canvas->restore(); |
| 131 | |
| 132 | // Draw the picture scaled |
| 133 | canvas->translate(0, SkIntToScalar(100)); |
| 134 | canvas->scale(200 / srcRect.width(), 200 / srcRect.height()); |
| 135 | canvas->translate(-srcRect.fLeft, -srcRect.fTop); |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 136 | fill_rect_filtered(canvas, srcRect, pictureSource); |
Justin Novosad | 5234075 | 2014-12-02 14:50:56 -0500 | [diff] [blame] | 137 | |
| 138 | // Draw the picture scaled, but rasterized at original resolution |
| 139 | canvas->translate(srcRect.width(), 0); |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 140 | fill_rect_filtered(canvas, srcRect, pictureSourceResampled); |
junov | f3c78cc | 2014-12-09 13:07:22 -0800 | [diff] [blame] | 141 | |
| 142 | // Draw the picture scaled, pixelated |
| 143 | canvas->translate(srcRect.width(), 0); |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 144 | fill_rect_filtered(canvas, srcRect, pictureSourcePixelated); |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 145 | } |
| 146 | } |
| 147 | |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 148 | private: |
reed | ca2622b | 2016-03-18 07:25:55 -0700 | [diff] [blame] | 149 | sk_sp<SkPicture> fPicture; |
robertphillips | 54ef1a7 | 2016-04-13 10:55:07 -0700 | [diff] [blame] | 150 | sk_sp<SkPicture> fLCDPicture; |
robertphillips | 5ff17b1 | 2016-03-28 13:13:42 -0700 | [diff] [blame] | 151 | |
senorblanco@chromium.org | 5333300 | 2013-12-12 23:28:52 +0000 | [diff] [blame] | 152 | typedef GM INHERITED; |
| 153 | }; |
| 154 | |
| 155 | /////////////////////////////////////////////////////////////////////////////// |
| 156 | |
| 157 | DEF_GM( return new PictureImageFilterGM; ) |