fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [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" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 9 | #include "include/core/SkCanvas.h" |
| 10 | #include "include/core/SkColor.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 11 | #include "include/core/SkImage.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 12 | #include "include/core/SkPaint.h" |
| 13 | #include "include/core/SkPoint.h" |
| 14 | #include "include/core/SkRect.h" |
| 15 | #include "include/core/SkRefCnt.h" |
| 16 | #include "include/core/SkScalar.h" |
| 17 | #include "include/core/SkSize.h" |
| 18 | #include "include/core/SkString.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 19 | #include "include/core/SkSurface.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 20 | #include "include/core/SkTypes.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 21 | #include "include/private/SkTArray.h" |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 22 | |
| 23 | class ImageScaleAlignedGM : public skiagm::GM { |
| 24 | protected: |
| 25 | void onOnceBeforeDraw() override { |
| 26 | const SkVector vectors[] = { { 1, 0 }, { 0, 1 } }; |
| 27 | |
| 28 | for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) { |
| 29 | auto& set = fSets.push_back(); |
| 30 | |
| 31 | set.fVector = vectors[i]; |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 32 | set.fImages.push_back() = MakeImage(vectors[i], SK_ColorGREEN); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 33 | set.fScales.push_back() = 1; |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 34 | set.fImages.push_back() = MakeImage(vectors[i], SK_ColorRED); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 35 | set.fScales.push_back() = kStretchFactor; |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 36 | set.fImages.push_back() = MakeImage(vectors[i], SK_ColorGREEN); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 37 | set.fScales.push_back() = 1; |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | SkString onShortName() override { |
| 42 | return SkString("image_scale_aligned"); |
| 43 | } |
| 44 | |
| 45 | SkISize onISize() override { |
fmalita | aed4d32 | 2015-12-15 06:48:48 -0800 | [diff] [blame] | 46 | return SkISize::Make(580, 780); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | void onDraw(SkCanvas* canvas) override { |
| 50 | struct { |
| 51 | SkPoint offset; |
fmalita | aed4d32 | 2015-12-15 06:48:48 -0800 | [diff] [blame] | 52 | SkVector scale; |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 53 | } cfgs[] = { |
fmalita | aed4d32 | 2015-12-15 06:48:48 -0800 | [diff] [blame] | 54 | {{ 10, 10 }, { 1, 1 }}, |
| 55 | {{ 300.5f, 10 }, { 1, 1 }}, |
| 56 | {{ 10, 200.5f }, { 1, 1 }}, |
| 57 | {{ 300.5f, 200.5f }, { 1, 1 }}, |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 58 | |
fmalita | aed4d32 | 2015-12-15 06:48:48 -0800 | [diff] [blame] | 59 | {{ 10.5f, 400.5f }, { 1, 1 }}, |
| 60 | {{ 550.5f, 400.5f }, { -1, 1 }}, |
| 61 | {{ 10.5f, 750.5f }, { 1, -1 }}, |
| 62 | {{ 550.5f, 750.5f }, { -1, -1 }}, |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 63 | }; |
| 64 | |
| 65 | for (size_t i = 0; i < SK_ARRAY_COUNT(cfgs); ++i) { |
| 66 | SkAutoCanvasRestore acr(canvas, true); |
| 67 | canvas->translate(cfgs[i].offset.x(), cfgs[i].offset.y()); |
fmalita | aed4d32 | 2015-12-15 06:48:48 -0800 | [diff] [blame] | 68 | canvas->scale(cfgs[i].scale.x(), cfgs[i].scale.y()); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 69 | drawSets(canvas); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | private: |
| 74 | struct ImageSet { |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 75 | SkSTArray<3, sk_sp<SkImage>, true> fImages; |
| 76 | SkSTArray<3, SkScalar> fScales; |
| 77 | SkVector fVector; |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 78 | }; |
| 79 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 80 | static sk_sp<SkImage> MakeImage(const SkVector& vec, SkColor color) { |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 81 | const SkPoint start = SkPoint::Make(vec.y() * kSegLen / 2, vec.x() * kSegLen / 2); |
| 82 | const SkPoint end = SkPoint::Make(start.x() + vec.x() * (kSegLen - 1), |
| 83 | start.y() + vec.y() * (kSegLen - 1)); |
| 84 | |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 85 | auto surface(SkSurface::MakeRasterN32Premul(kSegLen, kSegLen)); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 86 | surface->getCanvas()->clear(SK_ColorTRANSPARENT); |
| 87 | |
| 88 | SkPaint paint; |
| 89 | paint.setAntiAlias(true); |
fmalita | aed4d32 | 2015-12-15 06:48:48 -0800 | [diff] [blame] | 90 | const SkRect border = SkRect::MakeIWH(kSegLen, kSegLen).makeInset(.5f, .5f); |
| 91 | paint.setColor(SK_ColorBLUE); |
| 92 | paint.setStyle(SkPaint::kStroke_Style); |
| 93 | surface->getCanvas()->drawRect(border, paint); |
| 94 | |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 95 | paint.setColor(SK_ColorBLACK); |
Hal Canary | 23e474c | 2017-05-15 13:35:35 -0400 | [diff] [blame] | 96 | surface->getCanvas()->drawLine(start, end, paint); |
Mike Reed | 3661bc9 | 2017-02-22 13:21:42 -0500 | [diff] [blame] | 97 | |
| 98 | paint.reset(); |
| 99 | paint.setColor(color); |
| 100 | const SkPoint pts[] = { start, end }; |
| 101 | surface->getCanvas()->drawPoints(SkCanvas::kPoints_PointMode, 2, pts, paint); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 102 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 103 | return surface->makeImageSnapshot(); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | void drawSets(SkCanvas* canvas) const { |
| 107 | SkAutoCanvasRestore acr(canvas, true); |
| 108 | |
Mike Reed | 07c5f52 | 2021-01-23 12:23:23 -0500 | [diff] [blame] | 109 | const SkSamplingOptions samplings[] = { |
| 110 | SkSamplingOptions(SkFilterMode::kNearest), |
| 111 | SkSamplingOptions(SkFilterMode::kLinear), |
| 112 | SkSamplingOptions(SkFilterMode::kLinear, SkMipmapMode::kLinear), |
Mike Reed | f3ac2af | 2021-02-05 12:55:38 -0500 | [diff] [blame] | 113 | SkSamplingOptions(SkCubicResampler::Mitchell()), |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 114 | }; |
| 115 | const bool AAs[] = { false, true }; |
| 116 | |
| 117 | SkPaint paint; |
| 118 | for (int i = 0; i < fSets.count(); ++i) { |
| 119 | auto& set = fSets[i]; |
| 120 | SkPoint lastPt; |
| 121 | for (size_t j = 0; j < SK_ARRAY_COUNT(AAs); ++j) { |
| 122 | paint.setAntiAlias(AAs[j]); |
Mike Reed | 07c5f52 | 2021-01-23 12:23:23 -0500 | [diff] [blame] | 123 | for (size_t k = 0; k < SK_ARRAY_COUNT(samplings); ++k) { |
| 124 | lastPt = drawSet(canvas, set, samplings[k], paint); |
fmalita | aed4d32 | 2015-12-15 06:48:48 -0800 | [diff] [blame] | 125 | canvas->translate((kSegLen + 4) * set.fVector.y(), |
| 126 | (kSegLen + 4) * set.fVector.x()); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 127 | } |
| 128 | } |
| 129 | canvas->translate(lastPt.x() + kSegLen, |
Mike Reed | 07c5f52 | 2021-01-23 12:23:23 -0500 | [diff] [blame] | 130 | - SkIntToScalar(kSegLen + 4) * SK_ARRAY_COUNT(samplings) * SK_ARRAY_COUNT(AAs)); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 131 | } |
| 132 | } |
| 133 | |
Mike Reed | 07c5f52 | 2021-01-23 12:23:23 -0500 | [diff] [blame] | 134 | SkPoint drawSet(SkCanvas* canvas, const ImageSet& set, const SkSamplingOptions& sampling, |
| 135 | const SkPaint& paint) const { |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 136 | SkASSERT(set.fImages.count() == set.fScales.count()); |
| 137 | |
| 138 | SkPoint pt = SkPoint::Make(0, 0); |
| 139 | for (int i = 0; i < set.fImages.count(); ++i) { |
| 140 | auto& img = set.fImages[i]; |
| 141 | const SkRect dst = |
| 142 | SkRect::MakeXYWH(pt.x(), pt.y(), |
| 143 | img->width() * (1 + (set.fScales[i] - 1) * set.fVector.x()), |
| 144 | img->height() * (1 + (set.fScales[i] - 1) * set.fVector.y())); |
| 145 | |
Mike Reed | 07c5f52 | 2021-01-23 12:23:23 -0500 | [diff] [blame] | 146 | canvas->drawImageRect(img.get(), dst, sampling, &paint); |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 147 | pt.offset(dst.width() * set.fVector.x(), dst.height() * set.fVector.y()); |
| 148 | } |
| 149 | |
| 150 | return pt; |
| 151 | } |
| 152 | |
mtklein | dbfd7ab | 2016-09-01 11:24:54 -0700 | [diff] [blame] | 153 | static constexpr unsigned kSegLen = 15; |
| 154 | static constexpr unsigned kStretchFactor = 4; |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 155 | SkSTArray<2, ImageSet> fSets; |
| 156 | |
John Stiles | 7571f9e | 2020-09-02 22:42:33 -0400 | [diff] [blame] | 157 | using INHERITED = GM; |
fmalita | cad54b5 | 2015-12-11 11:03:27 -0800 | [diff] [blame] | 158 | }; |
| 159 | |
| 160 | DEF_GM(return new ImageScaleAlignedGM();) |