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