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, nullptr); 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 /////////////////////////////////////////////////////////////////////////////// 71 72 class DropShadowImageFilterGM : public skiagm::GM { 73 public: 74 DropShadowImageFilterGM () {} 75 76 protected: 77 78 virtual SkString onShortName() { 79 return SkString("dropshadowimagefilter"); 80 } 81 82 virtual SkISize onISize() { return SkISize::Make(400, 656); } 83 84 void draw_frame(SkCanvas* canvas, const SkRect& r) { 85 SkPaint paint; 86 paint.setStyle(SkPaint::kStroke_Style); 87 paint.setColor(SK_ColorRED); 88 canvas->drawRect(r, paint); 89 } 90 91 virtual void onDraw(SkCanvas* canvas) { 92 void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = { 93 draw_bitmap, draw_path, draw_paint, draw_text 94 }; 95 96 SkAutoTUnref<SkColorFilter> cf( 97 SkColorFilter::CreateModeFilter(SK_ColorMAGENTA, SkXfermode::kSrcIn_Mode)); 98 SkAutoTUnref<SkImageFilter> cfif(SkColorFilterImageFilter::Create(cf.get())); 99 SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)), 100 SkImageFilter::CropRect::kHasAll_CropEdge); 101 SkImageFilter::CropRect bogusRect(SkRect::Make(SkIRect::MakeXYWH(-100, -100, 10, 10)), 102 SkImageFilter::CropRect::kHasAll_CropEdge); 103 104 SkImageFilter* filters[] = { 105 nullptr, 106 SkDropShadowImageFilter::Create(7.0f, 0.0f, 0.0f, 3.0f, SK_ColorBLUE, 107 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode), 108 SkDropShadowImageFilter::Create(0.0f, 7.0f, 3.0f, 0.0f, SK_ColorBLUE, 109 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode), 110 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 111 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode), 112 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 113 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, cfif, nullptr), 114 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 115 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, nullptr, &cropRect), 116 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 117 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, nullptr, &bogusRect), 118 SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 119 SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode), 120 }; 121 122 SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64)); 123 SkScalar MARGIN = SkIntToScalar(16); 124 SkScalar DX = r.width() + MARGIN; 125 SkScalar DY = r.height() + MARGIN; 126 127 canvas->translate(MARGIN, MARGIN); 128 for (size_t j = 0; j < SK_ARRAY_COUNT(drawProc); ++j) { 129 canvas->save(); 130 for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { 131 drawProc[j](canvas, r, filters[i]); 132 canvas->translate(0, DY); 133 } 134 canvas->restore(); 135 canvas->translate(DX, 0); 136 } 137 138 for(size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) { 139 SkSafeUnref(filters[j]); 140 } 141 } 142 143 private: 144 typedef GM INHERITED; 145 }; 146 147 /////////////////////////////////////////////////////////////////////////////// 148 149 DEF_GM( return new DropShadowImageFilterGM; ) 150
