mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 1 | #include "SampleCode.h" |
| 2 | #include "SkView.h" |
| 3 | #include "SkCanvas.h" |
| 4 | #include "SkGraphics.h" |
| 5 | #include "SkRandom.h" |
| 6 | |
reed@google.com | 2f3dc9d | 2011-05-02 17:33:45 +0000 | [diff] [blame] | 7 | static void test_clearonlayers(SkCanvas* canvas) { |
| 8 | SkCanvas& c = *canvas; |
| 9 | |
| 10 | SkPaint paint; |
| 11 | paint.setColor(SK_ColorBLUE); |
| 12 | paint.setStyle(SkPaint::kStrokeAndFill_Style); |
| 13 | SkRect rect = SkRect::MakeXYWH(25, 25, 50, 50); |
| 14 | c.drawRect(rect, paint); |
| 15 | |
| 16 | c.clipRect(rect); |
| 17 | |
| 18 | c.saveLayer(NULL, NULL); |
| 19 | rect = SkRect::MakeXYWH(50, 10, 40, 80); |
| 20 | c.clipRect(rect, SkRegion::kUnion_Op); |
| 21 | |
| 22 | rect = SkRect::MakeXYWH(50, 0, 50, 100); |
| 23 | // You might draw something here, but it's not necessary. |
| 24 | // paint.setColor(SK_ColorRED); |
| 25 | // c.drawRect(rect, paint); |
| 26 | paint.setXfermodeMode(SkXfermode::kClear_Mode); |
| 27 | c.drawRect(rect, paint); |
| 28 | c.restore(); |
| 29 | } |
| 30 | |
mike@reedtribe.org | a8282ef | 2011-04-14 01:22:45 +0000 | [diff] [blame] | 31 | static void test_strokerect(SkCanvas* canvas, const SkRect& r) { |
| 32 | SkPaint p; |
| 33 | |
| 34 | p.setAntiAlias(true); |
| 35 | p.setStyle(SkPaint::kStroke_Style); |
| 36 | p.setStrokeWidth(4); |
| 37 | |
| 38 | canvas->drawRect(r, p); |
| 39 | |
| 40 | SkPath path; |
| 41 | SkRect r2(r); |
| 42 | r2.offset(18, 0); |
| 43 | path.addRect(r2); |
| 44 | |
| 45 | canvas->drawPath(path, p); |
| 46 | } |
| 47 | |
| 48 | static void test_strokerect(SkCanvas* canvas) { |
| 49 | canvas->drawColor(SK_ColorWHITE); |
| 50 | |
| 51 | SkRect r; |
| 52 | |
| 53 | r.set(10, 10, 14, 14); |
reed@google.com | 261b8e2 | 2011-04-14 17:53:24 +0000 | [diff] [blame] | 54 | r.offset(0.25f, 0.3333f); |
mike@reedtribe.org | a8282ef | 2011-04-14 01:22:45 +0000 | [diff] [blame] | 55 | test_strokerect(canvas, r); |
| 56 | canvas->translate(0, 20); |
| 57 | |
| 58 | r.set(10, 10, 14.5f, 14.5f); |
reed@google.com | 261b8e2 | 2011-04-14 17:53:24 +0000 | [diff] [blame] | 59 | r.offset(0.25f, 0.3333f); |
mike@reedtribe.org | a8282ef | 2011-04-14 01:22:45 +0000 | [diff] [blame] | 60 | test_strokerect(canvas, r); |
| 61 | canvas->translate(0, 20); |
| 62 | |
| 63 | r.set(10, 10, 14.5f, 20); |
reed@google.com | 261b8e2 | 2011-04-14 17:53:24 +0000 | [diff] [blame] | 64 | r.offset(0.25f, 0.3333f); |
mike@reedtribe.org | a8282ef | 2011-04-14 01:22:45 +0000 | [diff] [blame] | 65 | test_strokerect(canvas, r); |
| 66 | canvas->translate(0, 20); |
| 67 | |
| 68 | r.set(10, 10, 20, 14.5f); |
reed@google.com | 261b8e2 | 2011-04-14 17:53:24 +0000 | [diff] [blame] | 69 | r.offset(0.25f, 0.3333f); |
mike@reedtribe.org | a8282ef | 2011-04-14 01:22:45 +0000 | [diff] [blame] | 70 | test_strokerect(canvas, r); |
| 71 | canvas->translate(0, 20); |
| 72 | |
| 73 | r.set(10, 10, 20, 20); |
reed@google.com | 261b8e2 | 2011-04-14 17:53:24 +0000 | [diff] [blame] | 74 | r.offset(0.25f, 0.3333f); |
mike@reedtribe.org | a8282ef | 2011-04-14 01:22:45 +0000 | [diff] [blame] | 75 | test_strokerect(canvas, r); |
| 76 | canvas->translate(0, 20); |
| 77 | |
| 78 | } |
| 79 | |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 80 | class Draw : public SkRefCnt { |
| 81 | public: |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 82 | Draw() : fFlags(0) {} |
| 83 | |
| 84 | enum Flags { |
| 85 | kSelected_Flag = 1 << 0 |
| 86 | }; |
| 87 | int getFlags() const { return fFlags; } |
| 88 | void setFlags(int flags); |
| 89 | |
| 90 | bool isSelected() const { return SkToBool(fFlags & kSelected_Flag); } |
| 91 | void setSelected(bool pred) { |
| 92 | if (pred) { |
| 93 | fFlags |= kSelected_Flag; |
| 94 | } else { |
| 95 | fFlags &= ~kSelected_Flag; |
| 96 | } |
| 97 | } |
| 98 | |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 99 | void draw(SkCanvas* canvas) { |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 100 | int sc = canvas->save(); |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 101 | this->onDraw(canvas); |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 102 | canvas->restoreToCount(sc); |
| 103 | |
| 104 | if (this->isSelected()) { |
| 105 | this->drawSelection(canvas); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | void drawSelection(SkCanvas* canvas) { |
| 110 | int sc = canvas->save(); |
| 111 | this->onDrawSelection(canvas); |
| 112 | canvas->restoreToCount(sc); |
| 113 | } |
| 114 | |
| 115 | void getBounds(SkRect* bounds) { |
| 116 | this->onGetBounds(bounds); |
| 117 | } |
| 118 | |
| 119 | bool hitTest(SkScalar x, SkScalar y) { |
| 120 | return this->onHitTest(x, y); |
| 121 | } |
| 122 | |
| 123 | void offset(SkScalar dx, SkScalar dy) { |
| 124 | if (dx || dy) { |
| 125 | this->onOffset(dx, dy); |
| 126 | } |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | protected: |
| 130 | virtual void onDraw(SkCanvas*) = 0; |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 131 | virtual void onGetBounds(SkRect*) = 0; |
| 132 | virtual void onOffset(SkScalar dx, SkScalar dy) = 0; |
| 133 | virtual void onDrawSelection(SkCanvas* canvas) { |
| 134 | SkRect r; |
| 135 | this->getBounds(&r); |
| 136 | SkPaint paint; |
| 137 | SkPoint pts[4]; |
| 138 | r.toQuad(pts); |
| 139 | paint.setStrokeWidth(SkIntToScalar(10)); |
| 140 | paint.setColor(0x80FF8844); |
| 141 | paint.setStrokeCap(SkPaint::kRound_Cap); |
| 142 | canvas->drawPoints(SkCanvas::kPoints_PointMode, 4, pts, paint); |
| 143 | } |
| 144 | virtual bool onHitTest(SkScalar x, SkScalar y) { |
| 145 | SkRect bounds; |
| 146 | this->getBounds(&bounds); |
| 147 | return bounds.contains(x, y); |
| 148 | } |
| 149 | |
| 150 | private: |
| 151 | int fFlags; |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 152 | }; |
| 153 | |
| 154 | class RDraw : public Draw { |
| 155 | public: |
| 156 | enum Style { |
| 157 | kRect_Style, |
| 158 | kOval_Style, |
mike@reedtribe.org | a8282ef | 2011-04-14 01:22:45 +0000 | [diff] [blame] | 159 | kRRect_Style, |
| 160 | kFrame_Style |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 161 | }; |
| 162 | |
| 163 | RDraw(const SkRect& r, Style s) : fRect(r), fStyle(s) {} |
| 164 | |
| 165 | void setRect(const SkRect& r) { |
| 166 | fRect = r; |
| 167 | } |
| 168 | |
| 169 | void setPaint(const SkPaint& p) { |
| 170 | fPaint = p; |
| 171 | } |
| 172 | |
| 173 | protected: |
| 174 | virtual void onDraw(SkCanvas* canvas) { |
| 175 | switch (fStyle) { |
| 176 | case kRect_Style: |
| 177 | canvas->drawRect(fRect, fPaint); |
| 178 | break; |
| 179 | case kOval_Style: |
| 180 | canvas->drawOval(fRect, fPaint); |
| 181 | break; |
| 182 | case kRRect_Style: { |
| 183 | SkScalar rx = fRect.width() / 5; |
| 184 | SkScalar ry = fRect.height() / 5; |
| 185 | if (rx < ry) { |
| 186 | ry = rx; |
| 187 | } else { |
| 188 | rx = ry; |
| 189 | } |
| 190 | canvas->drawRoundRect(fRect, rx, ry, fPaint); |
| 191 | break; |
| 192 | } |
mike@reedtribe.org | a8282ef | 2011-04-14 01:22:45 +0000 | [diff] [blame] | 193 | case kFrame_Style: { |
| 194 | SkPath path; |
| 195 | path.addOval(fRect, SkPath::kCW_Direction); |
| 196 | SkRect r = fRect; |
| 197 | r.inset(fRect.width()/6, 0); |
| 198 | path.addOval(r, SkPath::kCCW_Direction); |
| 199 | canvas->drawPath(path, fPaint); |
| 200 | break; |
| 201 | } |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 202 | } |
| 203 | } |
| 204 | |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 205 | virtual void onGetBounds(SkRect* bounds) { |
| 206 | *bounds = fRect; |
| 207 | } |
| 208 | |
| 209 | virtual void onOffset(SkScalar dx, SkScalar dy) { |
| 210 | fRect.offset(dx, dy); |
| 211 | } |
| 212 | |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 213 | private: |
| 214 | SkRect fRect; |
| 215 | SkPaint fPaint; |
| 216 | Style fStyle; |
| 217 | }; |
| 218 | |
| 219 | class DrawFactory { |
| 220 | public: |
| 221 | DrawFactory() { |
| 222 | fPaint.setAntiAlias(true); |
| 223 | } |
| 224 | |
| 225 | const SkPaint& getPaint() const { return fPaint; } |
| 226 | |
| 227 | void setPaint(const SkPaint& p) { |
| 228 | fPaint = p; |
| 229 | } |
| 230 | |
| 231 | virtual Draw* create(const SkPoint&, const SkPoint&) = 0; |
| 232 | |
| 233 | private: |
| 234 | SkPaint fPaint; |
| 235 | }; |
| 236 | |
| 237 | class RectFactory : public DrawFactory { |
| 238 | public: |
| 239 | virtual Draw* create(const SkPoint& p0, const SkPoint& p1) { |
| 240 | SkRect r; |
| 241 | r.set(p0.x(), p0.y(), p1.x(), p1.y()); |
| 242 | r.sort(); |
| 243 | |
mike@reedtribe.org | a8282ef | 2011-04-14 01:22:45 +0000 | [diff] [blame] | 244 | // RDraw* d = new RDraw(r, RDraw::kRRect_Style); |
| 245 | RDraw* d = new RDraw(r, RDraw::kFrame_Style); |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 246 | d->setPaint(this->getPaint()); |
| 247 | return d; |
| 248 | } |
| 249 | }; |
| 250 | |
| 251 | class DrawView : public SkView { |
| 252 | Draw* fDraw; |
| 253 | DrawFactory* fFactory; |
| 254 | SkRandom fRand; |
| 255 | SkTDArray<Draw*> fList; |
| 256 | |
| 257 | public: |
| 258 | DrawView() : fDraw(NULL) { |
| 259 | fFactory = new RectFactory; |
| 260 | } |
| 261 | |
| 262 | virtual ~DrawView() { |
| 263 | fList.unrefAll(); |
| 264 | SkSafeUnref(fDraw); |
reed@google.com | 1d5aaa8 | 2011-05-31 15:35:54 +0000 | [diff] [blame^] | 265 | delete fFactory; |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | Draw* setDraw(Draw* d) { |
| 269 | SkRefCnt_SafeAssign(fDraw, d); |
| 270 | return d; |
| 271 | } |
| 272 | |
| 273 | SkColor randColor() { |
| 274 | return (SkColor)fRand.nextU() | 0xFF000000; |
| 275 | } |
| 276 | |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 277 | Draw* hitTestList(SkScalar x, SkScalar y) const { |
| 278 | Draw** first = fList.begin(); |
| 279 | for (Draw** iter = fList.end(); iter > first;) { |
| 280 | --iter; |
| 281 | if ((*iter)->hitTest(x, y)) { |
| 282 | return *iter; |
| 283 | } |
| 284 | } |
| 285 | return NULL; |
| 286 | } |
| 287 | |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 288 | protected: |
| 289 | // overrides from SkEventSink |
| 290 | virtual bool onQuery(SkEvent* evt) { |
| 291 | if (SampleCode::TitleQ(*evt)) { |
| 292 | SampleCode::TitleR(evt, "Draw"); |
| 293 | return true; |
| 294 | } |
| 295 | return this->INHERITED::onQuery(evt); |
| 296 | } |
| 297 | |
| 298 | void drawBG(SkCanvas* canvas) { |
| 299 | canvas->drawColor(0xFFDDDDDD); |
| 300 | // canvas->drawColor(SK_ColorWHITE); |
| 301 | } |
| 302 | |
| 303 | virtual void onDraw(SkCanvas* canvas) { |
| 304 | this->drawBG(canvas); |
reed@google.com | 2f3dc9d | 2011-05-02 17:33:45 +0000 | [diff] [blame] | 305 | test_clearonlayers(canvas); return; |
| 306 | // test_strokerect(canvas); return; |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 307 | |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 308 | for (Draw** iter = fList.begin(); iter < fList.end(); iter++) { |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 309 | (*iter)->draw(canvas); |
| 310 | } |
| 311 | if (fDraw) { |
| 312 | fDraw->draw(canvas); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) { |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 317 | for (Draw** iter = fList.begin(); iter < fList.end(); iter++) { |
| 318 | (*iter)->setSelected(false); |
| 319 | } |
| 320 | |
| 321 | Click* c = new Click(this); |
| 322 | Draw* d = this->hitTestList(x, y); |
| 323 | if (d) { |
| 324 | d->setSelected(true); |
| 325 | c->setType("dragger"); |
| 326 | } else { |
| 327 | c->setType("maker"); |
| 328 | } |
| 329 | return c; |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | virtual bool onClick(Click* click) { |
| 333 | if (Click::kUp_State == click->fState) { |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 334 | if (click->isType("maker")) { |
| 335 | if (SkPoint::Distance(click->fOrig, click->fCurr) > SkIntToScalar(3)) { |
| 336 | *fList.append() = fDraw; |
| 337 | } else { |
| 338 | fDraw->unref(); |
| 339 | } |
| 340 | fDraw = NULL; |
| 341 | } |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 342 | return true; |
| 343 | } |
| 344 | |
| 345 | if (Click::kDown_State == click->fState) { |
| 346 | SkPaint p = fFactory->getPaint(); |
| 347 | p.setColor(this->randColor()); |
| 348 | fFactory->setPaint(p); |
| 349 | } |
mike@reedtribe.org | dd0cd34 | 2011-03-21 00:53:39 +0000 | [diff] [blame] | 350 | |
| 351 | if (click->isType("maker")) { |
| 352 | this->setDraw(fFactory->create(click->fOrig, click->fCurr))->unref(); |
| 353 | } else if (click->isType("dragger")) { |
| 354 | for (Draw** iter = fList.begin(); iter < fList.end(); iter++) { |
| 355 | if ((*iter)->isSelected()) { |
| 356 | (*iter)->offset(click->fCurr.x() - click->fPrev.x(), |
| 357 | click->fCurr.y() - click->fPrev.y()); |
| 358 | } |
| 359 | } |
| 360 | } |
mike@reedtribe.org | b7d956d | 2011-03-20 20:19:16 +0000 | [diff] [blame] | 361 | this->inval(NULL); |
| 362 | return true; |
| 363 | } |
| 364 | |
| 365 | private: |
| 366 | typedef SkView INHERITED; |
| 367 | }; |
| 368 | |
| 369 | ////////////////////////////////////////////////////////////////////////////// |
| 370 | |
| 371 | static SkView* MyFactory() { return new DrawView; } |
| 372 | static SkViewRegister reg(MyFactory); |
| 373 | |