1/* 2 * Copyright 2011 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 "SkBlurImageFilter.h" 15#include "SkMorphologyImageFilter.h" 16#include "SkColorFilterImageFilter.h" 17#include "SkBitmapSource.h" 18#include "SkMergeImageFilter.h" 19#include "SkOffsetImageFilter.h" 20#include "SkTestImageFilters.h" 21 22/////////////////////////////////////////////////////////////////////////////// 23 24static void draw_paint(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 25 SkPaint paint; 26 paint.setImageFilter(imf); 27 paint.setColor(SK_ColorBLACK); 28 canvas->save(); 29 canvas->clipRect(r); 30 canvas->drawPaint(paint); 31 canvas->restore(); 32} 33 34static void draw_path(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 35 SkPaint paint; 36 paint.setColor(SK_ColorMAGENTA); 37 paint.setImageFilter(imf); 38 paint.setAntiAlias(true); 39 canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint); 40} 41 42static void draw_text(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 43 SkPaint paint; 44 paint.setImageFilter(imf); 45 paint.setColor(SK_ColorGREEN); 46 paint.setAntiAlias(true); 47 sk_tool_utils::set_portable_typeface(&paint); 48 paint.setTextSize(r.height()/2); 49 paint.setTextAlign(SkPaint::kCenter_Align); 50 canvas->drawText("Text", 4, r.centerX(), r.centerY(), paint); 51} 52 53static void draw_bitmap(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 54 SkPaint paint; 55 56 SkIRect bounds; 57 r.roundOut(&bounds); 58 59 SkBitmap bm; 60 bm.allocN32Pixels(bounds.width(), bounds.height()); 61 bm.eraseColor(SK_ColorTRANSPARENT); 62 SkCanvas c(bm); 63 draw_path(&c, r, NULL); 64 65 paint.setImageFilter(imf); 66 canvas->drawBitmap(bm, 0, 0, &paint); 67} 68 69static void draw_sprite(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 70 SkPaint paint; 71 72 SkIRect bounds; 73 r.roundOut(&bounds); 74 75 SkBitmap bm; 76 bm.allocN32Pixels(bounds.width(), bounds.height()); 77 bm.eraseColor(SK_ColorRED); 78 SkCanvas c(bm); 79 80 SkIRect cropRect = SkIRect::MakeXYWH(10, 10, 44, 44); 81 paint.setColor(SK_ColorGREEN); 82 c.drawRect(SkRect::Make(cropRect), paint); 83 84 paint.setImageFilter(imf); 85 SkPoint loc = { r.fLeft, r.fTop }; 86 canvas->getTotalMatrix().mapPoints(&loc, 1); 87 canvas->drawSprite(bm, 88 SkScalarRoundToInt(loc.fX), SkScalarRoundToInt(loc.fY), 89 &paint); 90} 91 92/////////////////////////////////////////////////////////////////////////////// 93 94class ImageFiltersCroppedGM : public skiagm::GM { 95public: 96 ImageFiltersCroppedGM () {} 97 98protected: 99 virtual SkString onShortName() override { 100 return SkString("imagefilterscropped"); 101 } 102 103 virtual SkISize onISize() override { return SkISize::Make(400, 880); } 104 105 void make_checkerboard() { 106 fCheckerboard.allocN32Pixels(80, 80); 107 SkCanvas canvas(fCheckerboard); 108 canvas.clear(SK_ColorTRANSPARENT); 109 SkPaint darkPaint; 110 darkPaint.setColor(0xFF404040); 111 SkPaint lightPaint; 112 lightPaint.setColor(0xFFA0A0A0); 113 for (int y = 0; y < 80; y += 16) { 114 for (int x = 0; x < 80; x += 16) { 115 canvas.save(); 116 canvas.translate(SkIntToScalar(x), SkIntToScalar(y)); 117 canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint); 118 canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint); 119 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint); 120 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint); 121 canvas.restore(); 122 } 123 } 124 } 125 126 void draw_frame(SkCanvas* canvas, const SkRect& r) { 127 SkPaint paint; 128 paint.setStyle(SkPaint::kStroke_Style); 129 paint.setColor(SK_ColorRED); 130 canvas->drawRect(r, paint); 131 } 132 133 virtual void onOnceBeforeDraw() override{ 134 make_checkerboard(); 135 } 136 137 virtual void onDraw(SkCanvas* canvas) override { 138 void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = { 139 draw_sprite, draw_bitmap, draw_path, draw_paint, draw_text 140 }; 141 142 SkAutoTUnref<SkColorFilter> cf( 143 SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode)); 144 SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)), SkImageFilter::CropRect::kHasAll_CropEdge); 145 SkImageFilter::CropRect bogusRect(SkRect::Make(SkIRect::MakeXYWH(-100, -100, 10, 10)), SkImageFilter::CropRect::kHasAll_CropEdge); 146 147 SkAutoTUnref<SkImageFilter> offset(SkOffsetImageFilter::Create( 148 SkIntToScalar(-10), SkIntToScalar(-10))); 149 150 SkAutoTUnref<SkImageFilter> cfOffset(SkColorFilterImageFilter::Create(cf.get(), offset.get())); 151 152 SkAutoTUnref<SkImageFilter> erodeX(SkErodeImageFilter::Create(8, 0, NULL, &cropRect)); 153 SkAutoTUnref<SkImageFilter> erodeY(SkErodeImageFilter::Create(0, 8, NULL, &cropRect)); 154 155 SkImageFilter* filters[] = { 156 NULL, 157 SkColorFilterImageFilter::Create(cf.get(), NULL, &cropRect), 158 SkBlurImageFilter::Create(1.0f, 1.0f, NULL, &cropRect), 159 SkBlurImageFilter::Create(8.0f, 0.0f, NULL, &cropRect), 160 SkBlurImageFilter::Create(0.0f, 8.0f, NULL, &cropRect), 161 SkBlurImageFilter::Create(8.0f, 8.0f, NULL, &cropRect), 162 SkErodeImageFilter::Create(1, 1, NULL, &cropRect), 163 SkErodeImageFilter::Create(8, 0, erodeY, &cropRect), 164 SkErodeImageFilter::Create(0, 8, erodeX, &cropRect), 165 SkErodeImageFilter::Create(8, 8, NULL, &cropRect), 166 SkMergeImageFilter::Create(NULL, cfOffset.get(), SkXfermode::kSrcOver_Mode, &cropRect), 167 SkBlurImageFilter::Create(8.0f, 8.0f, NULL, &bogusRect), 168 SkColorFilterImageFilter::Create(cf.get(), NULL, &bogusRect), 169 }; 170 171 SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64)); 172 SkScalar MARGIN = SkIntToScalar(16); 173 SkScalar DX = r.width() + MARGIN; 174 SkScalar DY = r.height() + MARGIN; 175 176 canvas->translate(MARGIN, MARGIN); 177 for (size_t j = 0; j < SK_ARRAY_COUNT(drawProc); ++j) { 178 canvas->save(); 179 for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { 180 SkPaint paint; 181 canvas->drawBitmap(fCheckerboard, 0, 0); 182 drawProc[j](canvas, r, filters[i]); 183 canvas->translate(0, DY); 184 } 185 canvas->restore(); 186 canvas->translate(DX, 0); 187 } 188 189 for(size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) { 190 SkSafeUnref(filters[j]); 191 } 192 } 193 194private: 195 SkBitmap fCheckerboard; 196 typedef GM INHERITED; 197}; 198 199/////////////////////////////////////////////////////////////////////////////// 200 201static skiagm::GM* MyFactory(void*) { return new ImageFiltersCroppedGM; } 202static skiagm::GMRegistry reg(MyFactory); 203