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 | |
| 8 | #include "gm.h" |
| 9 | #include "SkCanvas.h" |
| 10 | #include "SkColorFilter.h" |
| 11 | #include "SkColorPriv.h" |
| 12 | #include "SkShader.h" |
| 13 | |
| 14 | #include "SkBitmapSource.h" |
| 15 | #include "SkBlurImageFilter.h" |
| 16 | #include "SkColorMatrixFilter.h" |
| 17 | #include "SkDisplacementMapEffect.h" |
| 18 | #include "SkDropShadowImageFilter.h" |
| 19 | #include "SkGradientShader.h" |
| 20 | #include "SkMorphologyImageFilter.h" |
| 21 | #include "SkColorFilterImageFilter.h" |
| 22 | #include "SkMergeImageFilter.h" |
| 23 | #include "SkOffsetImageFilter.h" |
| 24 | |
| 25 | /////////////////////////////////////////////////////////////////////////////// |
| 26 | |
| 27 | class ImageFiltersCropExpandGM : public skiagm::GM { |
| 28 | public: |
| 29 | ImageFiltersCropExpandGM () {} |
| 30 | |
| 31 | protected: |
| 32 | |
| 33 | virtual SkString onShortName() { |
| 34 | return SkString("imagefilterscropexpand"); |
| 35 | } |
| 36 | |
| 37 | virtual SkISize onISize() { return SkISize::Make(570, 650); } |
| 38 | |
| 39 | void make_checkerboard(SkBitmap* bitmap) { |
| 40 | bitmap->allocN32Pixels(64, 64); |
| 41 | SkCanvas canvas(*bitmap); |
| 42 | canvas.clear(0xFFFF0000); |
| 43 | SkPaint darkPaint; |
| 44 | darkPaint.setColor(0xFF404040); |
| 45 | SkPaint lightPaint; |
| 46 | lightPaint.setColor(0xFFA0A0A0); |
| 47 | for (int y = 8; y < 48; y += 16) { |
| 48 | for (int x = 8; x < 48; x += 16) { |
| 49 | canvas.save(); |
| 50 | canvas.translate(SkIntToScalar(x), SkIntToScalar(y)); |
| 51 | canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint); |
| 52 | canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint); |
| 53 | canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint); |
| 54 | canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint); |
| 55 | canvas.restore(); |
| 56 | } |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | void make_gradient_circle(int width, int height, SkBitmap* bitmap) { |
| 61 | SkScalar x = SkIntToScalar(width / 2); |
| 62 | SkScalar y = SkIntToScalar(height / 2); |
| 63 | SkScalar radius = SkMinScalar(x, y) * 0.8f; |
| 64 | bitmap->allocN32Pixels(width, height); |
| 65 | SkCanvas canvas(*bitmap); |
| 66 | canvas.clear(0x00000000); |
| 67 | SkColor colors[2]; |
| 68 | colors[0] = SK_ColorWHITE; |
| 69 | colors[1] = SK_ColorBLACK; |
| 70 | SkAutoTUnref<SkShader> shader( |
| 71 | SkGradientShader::CreateRadial(SkPoint::Make(x, y), radius, colors, NULL, 2, |
| 72 | SkShader::kClamp_TileMode) |
| 73 | ); |
| 74 | SkPaint paint; |
| 75 | paint.setShader(shader); |
| 76 | canvas.drawCircle(x, y, radius, paint); |
| 77 | } |
| 78 | |
| 79 | static void draw(SkCanvas* canvas, const SkBitmap& bitmap, const SkRect& rect, SkImageFilter* filter) { |
| 80 | SkPaint paint; |
| 81 | paint.setImageFilter(filter)->unref(); |
| 82 | canvas->saveLayer(&rect, &paint); |
| 83 | canvas->drawBitmap(bitmap, 0, 0); |
| 84 | canvas->restore(); |
| 85 | |
| 86 | SkPaint strokePaint; |
| 87 | strokePaint.setColor(0xFFFF0000); |
| 88 | strokePaint.setStyle(SkPaint::kStroke_Style); |
| 89 | canvas->drawRect(rect, strokePaint); |
| 90 | |
| 91 | canvas->translate(SkIntToScalar(80), 0); |
| 92 | } |
| 93 | |
| 94 | virtual void onDraw(SkCanvas* canvas) { |
| 95 | SkAutoTUnref<SkColorFilter> cf( |
| 96 | SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode)); |
| 97 | SkImageFilter::CropRect crop_rect( |
| 98 | SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)), |
| 99 | SkImageFilter::CropRect::kHasAll_CropEdge); |
| 100 | |
| 101 | SkBitmap gradient_circle, checkerboard; |
| 102 | make_gradient_circle(64, 64, &gradient_circle); |
| 103 | make_checkerboard(&checkerboard); |
| 104 | |
| 105 | SkAutoTUnref<SkImageFilter> gradient_circle_source( |
| 106 | SkBitmapSource::Create(gradient_circle)); |
| 107 | SkAutoTUnref<SkImageFilter> noop_cropped( |
| 108 | SkOffsetImageFilter::Create(0, 0, NULL, &crop_rect)); |
| 109 | SkScalar sk255 = SkIntToScalar(255); |
| 110 | SkScalar matrix[20] = { 1, 0, 0, 0, 0, |
| 111 | 0, 1, 0, 0, sk255, |
| 112 | 0, 0, 1, 0, 0, |
| 113 | 0, 0, 0, 0, sk255 }; |
| 114 | SkAutoTUnref<SkColorFilter> cf_alpha_trans(SkColorMatrixFilter::Create(matrix)); |
| 115 | |
| 116 | SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64)); |
| 117 | SkScalar MARGIN = SkIntToScalar(12); |
| 118 | |
| 119 | SkIRect bounds; |
| 120 | r.roundOut(&bounds); |
| 121 | |
| 122 | SkPaint paint; |
| 123 | canvas->translate(MARGIN, MARGIN); |
| 124 | for (int outset = -15; outset <= 20; outset += 5) { |
| 125 | canvas->save(); |
| 126 | SkRect rect = crop_rect.rect(); |
| 127 | rect.outset(SkIntToScalar(outset), |
| 128 | SkIntToScalar(outset)); |
| 129 | SkImageFilter::CropRect big_rect(rect, SkImageFilter::CropRect::kHasAll_CropEdge); |
| 130 | |
| 131 | draw(canvas, checkerboard, rect, SkColorFilterImageFilter::Create( |
| 132 | cf_alpha_trans, noop_cropped.get(), &big_rect)); |
| 133 | |
| 134 | draw(canvas, checkerboard, rect, SkBlurImageFilter::Create( |
| 135 | 8.0f, 8.0f, noop_cropped.get(), &big_rect)); |
| 136 | |
| 137 | draw(canvas, checkerboard, rect, SkDilateImageFilter::Create( |
| 138 | 2, 2, noop_cropped.get(), &big_rect)); |
| 139 | |
| 140 | draw(canvas, checkerboard, rect, SkErodeImageFilter::Create( |
| 141 | 2, 2, noop_cropped.get(), &big_rect)); |
| 142 | |
| 143 | draw(canvas, checkerboard, rect, SkDropShadowImageFilter::Create( |
| 144 | SkIntToScalar(10), SkIntToScalar(10), SkIntToScalar(3), SkIntToScalar(3), |
| 145 | SK_ColorBLUE, noop_cropped.get(), &big_rect)); |
| 146 | |
| 147 | draw(canvas, checkerboard, rect, SkDisplacementMapEffect::Create( |
| 148 | SkDisplacementMapEffect::kR_ChannelSelectorType, |
| 149 | SkDisplacementMapEffect::kR_ChannelSelectorType, |
| 150 | SkIntToScalar(12), |
| 151 | gradient_circle_source.get(), |
| 152 | noop_cropped.get(), |
| 153 | &big_rect)); |
| 154 | |
| 155 | draw(canvas, checkerboard, rect, SkOffsetImageFilter::Create( |
| 156 | SkIntToScalar(-8), SkIntToScalar(16), noop_cropped.get(), &big_rect)); |
| 157 | |
| 158 | canvas->restore(); |
| 159 | canvas->translate(0, SkIntToScalar(80)); |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | private: |
| 164 | typedef GM INHERITED; |
| 165 | }; |
| 166 | |
| 167 | /////////////////////////////////////////////////////////////////////////////// |
| 168 | |
| 169 | static skiagm::GM* MyFactory(void*) { return new ImageFiltersCropExpandGM; } |
| 170 | static skiagm::GMRegistry reg(MyFactory); |