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 #include "SkColorFilter.h" 10 11 #include "SkColorFilterImageFilter.h" 12 #include "SkDropShadowImageFilter.h" 13 14 /////////////////////////////////////////////////////////////////////////////// 15 16 static void draw_paint(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 17 SkPaint paint; 18 paint.setImageFilter(imf); 19 paint.setColor(SK_ColorBLACK); 20 canvas->save(); 21 canvas->clipRect(r); 22 canvas->drawPaint(paint); 23 canvas->restore(); 24 } 25 26 static void draw_path(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 27 SkPaint paint; 28 paint.setColor(SK_ColorGREEN); 29 paint.setImageFilter(imf); 30 paint.setAntiAlias(true); 31 canvas->save(); 32 canvas->clipRect(r); 33 canvas->drawCircle(r.centerX(), r.centerY(), r.width()/3, paint); 34 canvas->restore(); 35 } 36 37 static void draw_text(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 38 SkPaint paint; 39 paint.setImageFilter(imf); 40 paint.setColor(SK_ColorGREEN); 41 paint.setAntiAlias(true); 42 sk_tool_utils::set_portable_typeface(&paint); 43 paint.setTextSize(r.height()/2); 44 paint.setTextAlign(SkPaint::kCenter_Align); 45 canvas->save(); 46 canvas->clipRect(r); 47 canvas->drawText("Text", 4, r.centerX(), r.centerY(), paint); 48 canvas->restore(); 49 } 50 51 static void draw_bitmap(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 52 SkPaint paint; 53 54 SkIRect bounds; 55 r.roundOut(&bounds); 56 57 SkBitmap bm; 58 bm.allocN32Pixels(bounds.width(), bounds.height()); 59 bm.eraseColor(SK_ColorTRANSPARENT); 60 SkCanvas c(bm); 61 draw_path(&c, r, NULL); 62 63 paint.setImageFilter(imf); 64 canvas->save(); 65 canvas->clipRect(r); 66 canvas->drawBitmap(bm, 0, 0, &paint); 67 canvas->restore(); 68 } 69 70 static void draw_sprite(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { 71 SkPaint paint; 72 73 SkIRect bounds; 74 r.roundOut(&bounds); 75 76 SkBitmap bm; 77 bm.allocN32Pixels(bounds.width(), bounds.height()); 78 bm.eraseColor(SK_ColorRED); 79 SkCanvas c(bm); 80 81 SkIRect cropRect = SkIRect::MakeXYWH(10, 10, 44, 44); 82 paint.setColor(SK_ColorGREEN); 83 c.drawRect(SkRect::Make(cropRect), paint); 84 85 paint.setImageFilter(imf); 86 SkPoint loc = { r.fLeft, r.fTop }; 87 canvas->getTotalMatrix().mapPoints(&loc, 1); 88 canvas->drawSprite(bm, 89 SkScalarRoundToInt(loc.fX), SkScalarRoundToInt(loc.fY), 90 &paint); 91 } 92 93 /////////////////////////////////////////////////////////////////////////////// 94 95 class DropShadowImageFilterGM : public skiagm::GM { 96 public: 97 DropShadowImageFilterGM () {} 98 99 protected: 100 101 virtual SkString onShortName() { 102 return SkString("dropshadowimagefilter"); 103 } 104 105 virtual SkISize onISize() { return SkISize::Make(400, 656); } 106 107 void draw_frame(SkCanvas* canvas, const SkRect& r) { 108 SkPaint paint; 109 paint.setStyle(SkPaint::kStroke_Style); 110 paint.setColor(SK_ColorRED); 111 canvas->drawRect(r, paint); 112 } 113 114 virtual void onDraw(SkCanvas* canvas) { 115 void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = { 116 draw_sprite, draw_bitmap, draw_path, draw_paint, draw_text 117 }; 118 119 SkAutoTUnref<SkColorFilter> cf( 120 SkColorFilter::CreateModeFilter(SK_ColorMAGENTA, SkXfermode::kSrcIn_Mode)); 121 SkAutoTUnref<SkImageFilter> cfif(SkColorFilterImageFilter::Create(cf.get())); 122 SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)), 123 SkImageFilter::CropRect::kHasAll_CropEdge); 124 SkImageFilter::CropRect bogusRect(SkRect::Make(SkIRect::MakeXYWH(-100, -100, 10, 10)), 125 SkImageFilter::CropRect::kHasAll_CropEdge); 126 127 SkImageFilter* filters[] = { 128 NULL, 129 SkDropShadowImageFilter::Create(7.0f, 0.0f, 0.0f, 3.0f, SK_ColorBLUE, 130 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode), 131 SkDropShadowImageFilter::Create(0.0f, 7.0f, 3.0f, 0.0f, SK_ColorBLUE, 132 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode), 133 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 134 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode), 135 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 136 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, cfif, NULL), 137 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 138 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, NULL, &cropRect), 139 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 140 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, NULL, &bogusRect), 141 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 142 SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode), 143 }; 144 145 SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64)); 146 SkScalar MARGIN = SkIntToScalar(16); 147 SkScalar DX = r.width() + MARGIN; 148 SkScalar DY = r.height() + MARGIN; 149 150 canvas->translate(MARGIN, MARGIN); 151 for (size_t j = 0; j < SK_ARRAY_COUNT(drawProc); ++j) { 152 canvas->save(); 153 for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { 154 drawProc[j](canvas, r, filters[i]); 155 canvas->translate(0, DY); 156 } 157 canvas->restore(); 158 canvas->translate(DX, 0); 159 } 160 161 for(size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) { 162 SkSafeUnref(filters[j]); 163 } 164 } 165 166 private: 167 typedef GM INHERITED; 168 }; 169 170 /////////////////////////////////////////////////////////////////////////////// 171 172 static skiagm::GM* MyFactory(void*) { return new DropShadowImageFilterGM; } 173 static skiagm::GMRegistry reg(MyFactory); 174
