1/* 2 * Copyright 2012 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 9#include "gm.h" 10#include "SkCanvas.h" 11#include "SkAAClip.h" 12 13namespace skiagm { 14 15static void paint_rgn(SkCanvas* canvas, const SkAAClip& clip, 16 const SkPaint& paint) { 17 SkMask mask; 18 SkBitmap bm; 19 20 clip.copyToMask(&mask); 21 22 SkAutoMaskFreeImage amfi(mask.fImage); 23 24 bm.installMaskPixels(mask); 25 26 // need to copy for deferred drawing test to work 27 SkBitmap bm2; 28 29 bm.deepCopyTo(&bm2); 30 31 canvas->drawBitmap(bm2, 32 SK_Scalar1 * mask.fBounds.fLeft, 33 SK_Scalar1 * mask.fBounds.fTop, 34 &paint); 35} 36 37////////////////////////////////////////////////////////////////////////////// 38/* 39 * This GM tests anti aliased single operation booleans with SkAAClips, 40 * SkRect and SkPaths. 41 */ 42class SimpleClipGM : public GM { 43public: 44 enum SkGeomTypes { 45 kRect_GeomType, 46 kPath_GeomType, 47 kAAClip_GeomType 48 }; 49 50 SimpleClipGM(SkGeomTypes geomType) 51 : fGeomType(geomType) { 52 53 // offset the rects a bit so we get anti-aliasing in the rect case 54 fBase.set(100.65f, 55 100.65f, 56 150.65f, 57 150.65f); 58 fRect = fBase; 59 fRect.inset(5, 5); 60 fRect.offset(25, 25); 61 62 fBasePath.addRoundRect(fBase, SkIntToScalar(5), SkIntToScalar(5)); 63 fRectPath.addRoundRect(fRect, SkIntToScalar(5), SkIntToScalar(5)); 64 INHERITED::setBGColor(0xFFDDDDDD); 65 } 66 67protected: 68 void buildRgn(SkAAClip* clip, SkRegion::Op op) { 69 clip->setPath(fBasePath, NULL, true); 70 71 SkAAClip clip2; 72 clip2.setPath(fRectPath, NULL, true); 73 clip->op(clip2, op); 74 } 75 76 void drawOrig(SkCanvas* canvas) { 77 SkPaint paint; 78 79 paint.setStyle(SkPaint::kStroke_Style); 80 paint.setColor(SK_ColorBLACK); 81 82 canvas->drawRect(fBase, paint); 83 canvas->drawRect(fRect, paint); 84 } 85 86 void drawRgnOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) { 87 88 SkAAClip clip; 89 90 this->buildRgn(&clip, op); 91 this->drawOrig(canvas); 92 93 SkPaint paint; 94 paint.setColor(color); 95 paint_rgn(canvas, clip, paint); 96 } 97 98 void drawPathsOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) { 99 100 this->drawOrig(canvas); 101 102 canvas->save(); 103 104 // create the clip mask with the supplied boolean op 105 if (kPath_GeomType == fGeomType) { 106 // path-based case 107 canvas->clipPath(fBasePath, SkRegion::kReplace_Op, true); 108 canvas->clipPath(fRectPath, op, true); 109 } else { 110 // rect-based case 111 canvas->clipRect(fBase, SkRegion::kReplace_Op, true); 112 canvas->clipRect(fRect, op, true); 113 } 114 115 // draw a rect that will entirely cover the clip mask area 116 SkPaint paint; 117 paint.setColor(color); 118 119 SkRect r = SkRect::MakeLTRB(SkIntToScalar(90), SkIntToScalar(90), 120 SkIntToScalar(180), SkIntToScalar(180)); 121 122 canvas->drawRect(r, paint); 123 124 canvas->restore(); 125 } 126 127 virtual SkString onShortName() { 128 SkString str; 129 str.printf("simpleaaclip_%s", 130 kRect_GeomType == fGeomType ? "rect" : 131 (kPath_GeomType == fGeomType ? "path" : 132 "aaclip")); 133 return str; 134 } 135 136 virtual SkISize onISize() { 137 return SkISize::Make(640, 480); 138 } 139 140 virtual void onDraw(SkCanvas* canvas) { 141 142 static const struct { 143 SkColor fColor; 144 const char* fName; 145 SkRegion::Op fOp; 146 } gOps[] = { 147 { SK_ColorBLACK, "Difference", SkRegion::kDifference_Op }, 148 { SK_ColorRED, "Intersect", SkRegion::kIntersect_Op }, 149 { 0xFF008800, "Union", SkRegion::kUnion_Op }, 150 { SK_ColorGREEN, "Rev Diff", SkRegion::kReverseDifference_Op }, 151 { SK_ColorYELLOW, "Replace", SkRegion::kReplace_Op }, 152 { SK_ColorBLUE, "XOR", SkRegion::kXOR_Op }, 153 }; 154 155 SkPaint textPaint; 156 textPaint.setAntiAlias(true); 157 sk_tool_utils::set_portable_typeface(&textPaint); 158 textPaint.setTextSize(SK_Scalar1*24); 159 int xOff = 0; 160 161 for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); op++) { 162 canvas->drawText(gOps[op].fName, strlen(gOps[op].fName), 163 SkIntToScalar(75), SkIntToScalar(50), 164 textPaint); 165 166 if (kAAClip_GeomType == fGeomType) { 167 this->drawRgnOped(canvas, gOps[op].fOp, gOps[op].fColor); 168 } else { 169 this->drawPathsOped(canvas, gOps[op].fOp, gOps[op].fColor); 170 } 171 172 if (xOff >= 400) { 173 canvas->translate(SkIntToScalar(-400), SkIntToScalar(250)); 174 xOff = 0; 175 } else { 176 canvas->translate(SkIntToScalar(200), 0); 177 xOff += 200; 178 } 179 } 180 } 181private: 182 183 SkGeomTypes fGeomType; 184 185 SkRect fBase; 186 SkRect fRect; 187 188 SkPath fBasePath; // fBase as a round rect 189 SkPath fRectPath; // fRect as a round rect 190 191 typedef GM INHERITED; 192}; 193 194////////////////////////////////////////////////////////////////////////////// 195 196// rects 197DEF_GM( return new SimpleClipGM(SimpleClipGM::kRect_GeomType); ) 198DEF_GM( return new SimpleClipGM(SimpleClipGM::kPath_GeomType); ) 199DEF_GM( return new SimpleClipGM(SimpleClipGM::kAAClip_GeomType); ) 200 201} 202