epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2011 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | #include "SkView.h" |
| 9 | #include "SkCanvas.h" |
| 10 | |
| 11 | //////////////////////////////////////////////////////////////////////// |
| 12 | |
| 13 | SkView::SkView(uint32_t flags) : fFlags(SkToU8(flags)) |
| 14 | { |
| 15 | fWidth = fHeight = 0; |
| 16 | fLoc.set(0, 0); |
| 17 | fParent = fFirstChild = fNextSibling = fPrevSibling = NULL; |
reed@google.com | f03bb56 | 2011-11-11 21:42:12 +0000 | [diff] [blame^] | 18 | fMatrix.setIdentity(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 19 | fContainsFocus = 0; |
| 20 | } |
| 21 | |
| 22 | SkView::~SkView() |
| 23 | { |
| 24 | this->detachAllChildren(); |
| 25 | } |
| 26 | |
| 27 | void SkView::setFlags(uint32_t flags) |
| 28 | { |
| 29 | SkASSERT((flags & ~kAllFlagMasks) == 0); |
| 30 | |
| 31 | uint32_t diff = fFlags ^ flags; |
| 32 | |
| 33 | if (diff & kVisible_Mask) |
| 34 | this->inval(NULL); |
| 35 | |
| 36 | fFlags = SkToU8(flags); |
| 37 | |
| 38 | if (diff & kVisible_Mask) |
| 39 | { |
| 40 | this->inval(NULL); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | void SkView::setVisibleP(bool pred) |
| 45 | { |
| 46 | this->setFlags(SkSetClearShift(fFlags, pred, kVisible_Shift)); |
| 47 | } |
| 48 | |
| 49 | void SkView::setEnabledP(bool pred) |
| 50 | { |
| 51 | this->setFlags(SkSetClearShift(fFlags, pred, kEnabled_Shift)); |
| 52 | } |
| 53 | |
| 54 | void SkView::setFocusableP(bool pred) |
| 55 | { |
| 56 | this->setFlags(SkSetClearShift(fFlags, pred, kFocusable_Shift)); |
| 57 | } |
| 58 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 59 | void SkView::setClipToBounds(bool pred) { |
| 60 | this->setFlags(SkSetClearShift(fFlags, !pred, kNoClip_Shift)); |
| 61 | } |
| 62 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 63 | void SkView::setSize(SkScalar width, SkScalar height) |
| 64 | { |
| 65 | width = SkMaxScalar(0, width); |
| 66 | height = SkMaxScalar(0, height); |
| 67 | |
| 68 | if (fWidth != width || fHeight != height) |
| 69 | { |
| 70 | this->inval(NULL); |
| 71 | fWidth = width; |
| 72 | fHeight = height; |
| 73 | this->inval(NULL); |
| 74 | this->onSizeChange(); |
| 75 | this->invokeLayout(); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | void SkView::setLoc(SkScalar x, SkScalar y) |
| 80 | { |
| 81 | if (fLoc.fX != x || fLoc.fY != y) |
| 82 | { |
| 83 | this->inval(NULL); |
| 84 | fLoc.set(x, y); |
reed@google.com | f03bb56 | 2011-11-11 21:42:12 +0000 | [diff] [blame^] | 85 | this->inval(NULL); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 86 | } |
| 87 | } |
| 88 | |
| 89 | void SkView::offset(SkScalar dx, SkScalar dy) |
| 90 | { |
| 91 | if (dx || dy) |
| 92 | this->setLoc(fLoc.fX + dx, fLoc.fY + dy); |
| 93 | } |
| 94 | |
reed@google.com | f03bb56 | 2011-11-11 21:42:12 +0000 | [diff] [blame^] | 95 | void SkView::setLocalMatrix(const SkMatrix& matrix) |
| 96 | { |
| 97 | this->inval(NULL); |
| 98 | fMatrix = matrix; |
| 99 | this->inval(NULL); |
| 100 | } |
| 101 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 102 | void SkView::draw(SkCanvas* canvas) |
| 103 | { |
| 104 | if (fWidth && fHeight && this->isVisible()) |
| 105 | { |
| 106 | SkRect r; |
| 107 | r.set(fLoc.fX, fLoc.fY, fLoc.fX + fWidth, fLoc.fY + fHeight); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 108 | if (this->isClipToBounds() && |
| 109 | canvas->quickReject(r, SkCanvas::kBW_EdgeType)) { |
| 110 | return; |
| 111 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 112 | |
| 113 | SkAutoCanvasRestore as(canvas, true); |
| 114 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 115 | if (this->isClipToBounds()) { |
| 116 | canvas->clipRect(r); |
| 117 | } |
reed@google.com | f03bb56 | 2011-11-11 21:42:12 +0000 | [diff] [blame^] | 118 | |
| 119 | canvas->translate(fLoc.fX, fLoc.fY); |
| 120 | canvas->concat(fMatrix); |
| 121 | |
reed@android.com | 6c5f6f2 | 2009-08-14 16:08:38 +0000 | [diff] [blame] | 122 | if (fParent) { |
| 123 | fParent->beforeChild(this, canvas); |
| 124 | } |
reed@android.com | 562ea92 | 2010-02-08 21:45:03 +0000 | [diff] [blame] | 125 | |
| 126 | int sc = canvas->save(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 127 | this->onDraw(canvas); |
reed@android.com | 562ea92 | 2010-02-08 21:45:03 +0000 | [diff] [blame] | 128 | canvas->restoreToCount(sc); |
| 129 | |
reed@android.com | 6c5f6f2 | 2009-08-14 16:08:38 +0000 | [diff] [blame] | 130 | if (fParent) { |
| 131 | fParent->afterChild(this, canvas); |
| 132 | } |
| 133 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 134 | B2FIter iter(this); |
| 135 | SkView* child; |
| 136 | |
| 137 | SkCanvas* childCanvas = this->beforeChildren(canvas); |
| 138 | |
| 139 | while ((child = iter.next()) != NULL) |
| 140 | child->draw(childCanvas); |
| 141 | |
| 142 | this->afterChildren(canvas); |
| 143 | } |
| 144 | } |
| 145 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 146 | void SkView::inval(SkRect* rect) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 147 | SkView* view = this; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 148 | SkRect storage; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 149 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 150 | for (;;) { |
| 151 | if (!view->isVisible()) { |
| 152 | return; |
| 153 | } |
| 154 | if (view->isClipToBounds()) { |
| 155 | SkRect bounds; |
| 156 | view->getLocalBounds(&bounds); |
| 157 | if (rect && !bounds.intersect(*rect)) { |
| 158 | return; |
| 159 | } |
| 160 | storage = bounds; |
| 161 | rect = &storage; |
| 162 | } |
| 163 | if (view->handleInval(rect)) { |
| 164 | return; |
| 165 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 166 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 167 | SkView* parent = view->fParent; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 168 | if (parent == NULL) { |
| 169 | return; |
| 170 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 171 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 172 | if (rect) { |
| 173 | rect->offset(view->fLoc.fX, view->fLoc.fY); |
| 174 | } |
| 175 | view = parent; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 176 | } |
| 177 | } |
| 178 | |
| 179 | //////////////////////////////////////////////////////////////////////////// |
| 180 | |
| 181 | bool SkView::setFocusView(SkView* fv) |
| 182 | { |
| 183 | SkView* view = this; |
| 184 | |
| 185 | do { |
| 186 | if (view->onSetFocusView(fv)) |
| 187 | return true; |
| 188 | } while ((view = view->fParent) != NULL); |
| 189 | return false; |
| 190 | } |
| 191 | |
| 192 | SkView* SkView::getFocusView() const |
| 193 | { |
| 194 | SkView* focus = NULL; |
| 195 | const SkView* view = this; |
| 196 | do { |
| 197 | if (view->onGetFocusView(&focus)) |
| 198 | break; |
| 199 | } while ((view = view->fParent) != NULL); |
| 200 | return focus; |
| 201 | } |
| 202 | |
| 203 | bool SkView::hasFocus() const |
| 204 | { |
| 205 | return this == this->getFocusView(); |
| 206 | } |
| 207 | |
| 208 | bool SkView::acceptFocus() |
| 209 | { |
| 210 | return this->isFocusable() && this->setFocusView(this); |
| 211 | } |
| 212 | |
| 213 | /* |
| 214 | Try to give focus to this view, or its children |
| 215 | */ |
| 216 | SkView* SkView::acceptFocus(FocusDirection dir) |
| 217 | { |
| 218 | if (dir == kNext_FocusDirection) |
| 219 | { |
| 220 | if (this->acceptFocus()) |
| 221 | return this; |
| 222 | |
| 223 | B2FIter iter(this); |
| 224 | SkView* child, *focus; |
| 225 | while ((child = iter.next()) != NULL) |
| 226 | if ((focus = child->acceptFocus(dir)) != NULL) |
| 227 | return focus; |
| 228 | } |
| 229 | else // prev |
| 230 | { |
| 231 | F2BIter iter(this); |
| 232 | SkView* child, *focus; |
| 233 | while ((child = iter.next()) != NULL) |
| 234 | if ((focus = child->acceptFocus(dir)) != NULL) |
| 235 | return focus; |
| 236 | |
| 237 | if (this->acceptFocus()) |
| 238 | return this; |
| 239 | } |
| 240 | |
| 241 | return NULL; |
| 242 | } |
| 243 | |
| 244 | SkView* SkView::moveFocus(FocusDirection dir) |
| 245 | { |
| 246 | SkView* focus = this->getFocusView(); |
| 247 | |
| 248 | if (focus == NULL) |
| 249 | { // start with the root |
| 250 | focus = this; |
| 251 | while (focus->fParent) |
| 252 | focus = focus->fParent; |
| 253 | } |
| 254 | |
| 255 | SkView* child, *parent; |
| 256 | |
| 257 | if (dir == kNext_FocusDirection) |
| 258 | { |
| 259 | parent = focus; |
| 260 | child = focus->fFirstChild; |
| 261 | if (child) |
| 262 | goto FIRST_CHILD; |
| 263 | else |
| 264 | goto NEXT_SIB; |
| 265 | |
| 266 | do { |
| 267 | while (child != parent->fFirstChild) |
| 268 | { |
| 269 | FIRST_CHILD: |
| 270 | if ((focus = child->acceptFocus(dir)) != NULL) |
| 271 | return focus; |
| 272 | child = child->fNextSibling; |
| 273 | } |
| 274 | NEXT_SIB: |
| 275 | child = parent->fNextSibling; |
| 276 | parent = parent->fParent; |
| 277 | } while (parent != NULL); |
| 278 | } |
| 279 | else // prevfocus |
| 280 | { |
| 281 | parent = focus->fParent; |
| 282 | if (parent == NULL) // we're the root |
| 283 | return focus->acceptFocus(dir); |
| 284 | else |
| 285 | { |
| 286 | child = focus; |
| 287 | while (parent) |
| 288 | { |
| 289 | while (child != parent->fFirstChild) |
| 290 | { |
| 291 | child = child->fPrevSibling; |
| 292 | if ((focus = child->acceptFocus(dir)) != NULL) |
| 293 | return focus; |
| 294 | } |
| 295 | if (parent->acceptFocus()) |
| 296 | return parent; |
| 297 | |
| 298 | child = parent; |
| 299 | parent = parent->fParent; |
| 300 | } |
| 301 | } |
| 302 | } |
| 303 | return NULL; |
| 304 | } |
| 305 | |
| 306 | void SkView::onFocusChange(bool gainFocusP) |
| 307 | { |
| 308 | this->inval(NULL); |
| 309 | } |
| 310 | |
| 311 | //////////////////////////////////////////////////////////////////////////// |
| 312 | |
| 313 | SkView::Click::Click(SkView* target) |
| 314 | { |
Scroggo | d3aed39 | 2011-06-22 13:26:56 +0000 | [diff] [blame] | 315 | SkASSERT(target); |
| 316 | fTargetID = target->getSinkID(); |
| 317 | fType = NULL; |
| 318 | fWeOwnTheType = false; |
| 319 | fOwner = NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 320 | } |
| 321 | |
| 322 | SkView::Click::~Click() |
| 323 | { |
| 324 | this->resetType(); |
| 325 | } |
| 326 | |
| 327 | void SkView::Click::resetType() |
| 328 | { |
| 329 | if (fWeOwnTheType) |
| 330 | { |
| 331 | sk_free(fType); |
| 332 | fWeOwnTheType = false; |
| 333 | } |
| 334 | fType = NULL; |
| 335 | } |
| 336 | |
| 337 | bool SkView::Click::isType(const char type[]) const |
| 338 | { |
| 339 | const char* t = fType; |
| 340 | |
| 341 | if (type == t) |
| 342 | return true; |
| 343 | |
| 344 | if (type == NULL) |
| 345 | type = ""; |
| 346 | if (t == NULL) |
| 347 | t = ""; |
| 348 | return !strcmp(t, type); |
| 349 | } |
| 350 | |
| 351 | void SkView::Click::setType(const char type[]) |
| 352 | { |
| 353 | this->resetType(); |
| 354 | fType = (char*)type; |
| 355 | } |
| 356 | |
| 357 | void SkView::Click::copyType(const char type[]) |
| 358 | { |
| 359 | if (fType != type) |
| 360 | { |
| 361 | this->resetType(); |
| 362 | if (type) |
| 363 | { |
| 364 | size_t len = strlen(type) + 1; |
| 365 | fType = (char*)sk_malloc_throw(len); |
| 366 | memcpy(fType, type, len); |
| 367 | fWeOwnTheType = true; |
| 368 | } |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | SkView::Click* SkView::findClickHandler(SkScalar x, SkScalar y) |
| 373 | { |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 374 | if (x < 0 || y < 0 || x >= fWidth || y >= fHeight) { |
epoger@google.com | 17b7894 | 2011-08-26 14:40:38 +0000 | [diff] [blame] | 375 | return NULL; |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 376 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 377 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 378 | if (this->onSendClickToChildren(x, y)) { |
| 379 | F2BIter iter(this); |
| 380 | SkView* child; |
reed@google.com | f03bb56 | 2011-11-11 21:42:12 +0000 | [diff] [blame^] | 381 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 382 | while ((child = iter.next()) != NULL) |
| 383 | { |
reed@google.com | f03bb56 | 2011-11-11 21:42:12 +0000 | [diff] [blame^] | 384 | SkPoint p; |
| 385 | child->globalToLocal(x, y, &p); |
| 386 | |
| 387 | Click* click = child->findClickHandler(p.fX, p.fY); |
| 388 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 389 | if (click) { |
| 390 | return click; |
| 391 | } |
| 392 | } |
| 393 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 394 | return this->onFindClickHandler(x, y); |
| 395 | } |
| 396 | |
| 397 | void SkView::DoClickDown(Click* click, int x, int y) |
| 398 | { |
| 399 | SkASSERT(click); |
| 400 | |
| 401 | SkView* target = (SkView*)SkEventSink::FindSink(click->fTargetID); |
| 402 | if (target == NULL) |
| 403 | return; |
| 404 | |
| 405 | click->fIOrig.set(x, y); |
| 406 | click->fICurr = click->fIPrev = click->fIOrig; |
| 407 | |
| 408 | click->fOrig.iset(x, y); |
| 409 | target->globalToLocal(&click->fOrig); |
| 410 | click->fPrev = click->fCurr = click->fOrig; |
| 411 | |
| 412 | click->fState = Click::kDown_State; |
| 413 | target->onClick(click); |
| 414 | } |
| 415 | |
| 416 | void SkView::DoClickMoved(Click* click, int x, int y) |
| 417 | { |
| 418 | SkASSERT(click); |
| 419 | |
| 420 | SkView* target = (SkView*)SkEventSink::FindSink(click->fTargetID); |
| 421 | if (target == NULL) |
| 422 | return; |
| 423 | |
| 424 | click->fIPrev = click->fICurr; |
| 425 | click->fICurr.set(x, y); |
| 426 | |
| 427 | click->fPrev = click->fCurr; |
| 428 | click->fCurr.iset(x, y); |
| 429 | target->globalToLocal(&click->fCurr); |
| 430 | |
| 431 | click->fState = Click::kMoved_State; |
| 432 | target->onClick(click); |
| 433 | } |
| 434 | |
| 435 | void SkView::DoClickUp(Click* click, int x, int y) |
| 436 | { |
| 437 | SkASSERT(click); |
| 438 | |
| 439 | SkView* target = (SkView*)SkEventSink::FindSink(click->fTargetID); |
| 440 | if (target == NULL) |
| 441 | return; |
| 442 | |
| 443 | click->fIPrev = click->fICurr; |
| 444 | click->fICurr.set(x, y); |
| 445 | |
| 446 | click->fPrev = click->fCurr; |
| 447 | click->fCurr.iset(x, y); |
| 448 | target->globalToLocal(&click->fCurr); |
| 449 | |
| 450 | click->fState = Click::kUp_State; |
| 451 | target->onClick(click); |
| 452 | } |
| 453 | |
| 454 | ////////////////////////////////////////////////////////////////////// |
| 455 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 456 | void SkView::invokeLayout() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 457 | SkView::Layout* layout = this->getLayout(); |
| 458 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 459 | if (layout) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 460 | layout->layoutChildren(this); |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 461 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 462 | } |
| 463 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 464 | void SkView::onDraw(SkCanvas* canvas) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 465 | Artist* artist = this->getArtist(); |
| 466 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 467 | if (artist) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 468 | artist->draw(this, canvas); |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 469 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 470 | } |
| 471 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 472 | void SkView::onSizeChange() {} |
| 473 | |
| 474 | bool SkView::onSendClickToChildren(SkScalar x, SkScalar y) { |
| 475 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 476 | } |
| 477 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 478 | SkView::Click* SkView::onFindClickHandler(SkScalar x, SkScalar y) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 479 | return NULL; |
| 480 | } |
| 481 | |
reed@android.com | e72fee5 | 2009-11-16 14:52:01 +0000 | [diff] [blame] | 482 | bool SkView::onClick(Click*) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 483 | return false; |
| 484 | } |
| 485 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 486 | bool SkView::handleInval(const SkRect*) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 487 | return false; |
| 488 | } |
| 489 | |
| 490 | ////////////////////////////////////////////////////////////////////// |
| 491 | |
| 492 | void SkView::getLocalBounds(SkRect* bounds) const |
| 493 | { |
| 494 | if (bounds) |
| 495 | bounds->set(0, 0, fWidth, fHeight); |
| 496 | } |
| 497 | |
| 498 | ////////////////////////////////////////////////////////////////////// |
| 499 | ////////////////////////////////////////////////////////////////////// |
| 500 | |
| 501 | void SkView::detachFromParent_NoLayout() |
| 502 | { |
| 503 | if (fParent == NULL) |
| 504 | return; |
| 505 | |
| 506 | if (fContainsFocus) |
| 507 | (void)this->setFocusView(NULL); |
| 508 | |
| 509 | this->inval(NULL); |
| 510 | |
| 511 | SkView* next = NULL; |
| 512 | |
| 513 | if (fNextSibling != this) // do we have any siblings |
| 514 | { |
| 515 | fNextSibling->fPrevSibling = fPrevSibling; |
| 516 | fPrevSibling->fNextSibling = fNextSibling; |
| 517 | next = fNextSibling; |
| 518 | } |
| 519 | |
| 520 | if (fParent->fFirstChild == this) |
| 521 | fParent->fFirstChild = next; |
| 522 | |
| 523 | fParent = fNextSibling = fPrevSibling = NULL; |
| 524 | |
| 525 | this->unref(); |
| 526 | } |
| 527 | |
| 528 | void SkView::detachFromParent() |
| 529 | { |
| 530 | SkView* parent = fParent; |
| 531 | |
| 532 | if (parent) |
| 533 | { |
| 534 | this->detachFromParent_NoLayout(); |
| 535 | parent->invokeLayout(); |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | SkView* SkView::attachChildToBack(SkView* child) |
| 540 | { |
| 541 | SkASSERT(child != this); |
| 542 | |
| 543 | if (child == NULL || fFirstChild == child) |
| 544 | goto DONE; |
| 545 | |
| 546 | child->ref(); |
| 547 | child->detachFromParent_NoLayout(); |
| 548 | |
| 549 | if (fFirstChild == NULL) |
| 550 | { |
| 551 | child->fNextSibling = child; |
| 552 | child->fPrevSibling = child; |
| 553 | } |
| 554 | else |
| 555 | { |
| 556 | child->fNextSibling = fFirstChild; |
| 557 | child->fPrevSibling = fFirstChild->fPrevSibling; |
| 558 | fFirstChild->fPrevSibling->fNextSibling = child; |
| 559 | fFirstChild->fPrevSibling = child; |
| 560 | } |
| 561 | |
| 562 | fFirstChild = child; |
| 563 | child->fParent = this; |
| 564 | child->inval(NULL); |
| 565 | |
| 566 | this->invokeLayout(); |
| 567 | DONE: |
| 568 | return child; |
| 569 | } |
| 570 | |
| 571 | SkView* SkView::attachChildToFront(SkView* child) |
| 572 | { |
| 573 | SkASSERT(child != this); |
| 574 | |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 575 | if (child == NULL || (fFirstChild && fFirstChild->fPrevSibling == child)) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 576 | goto DONE; |
| 577 | |
| 578 | child->ref(); |
| 579 | child->detachFromParent_NoLayout(); |
| 580 | |
| 581 | if (fFirstChild == NULL) |
| 582 | { |
| 583 | fFirstChild = child; |
| 584 | child->fNextSibling = child; |
| 585 | child->fPrevSibling = child; |
| 586 | } |
| 587 | else |
| 588 | { |
| 589 | child->fNextSibling = fFirstChild; |
| 590 | child->fPrevSibling = fFirstChild->fPrevSibling; |
| 591 | fFirstChild->fPrevSibling->fNextSibling = child; |
| 592 | fFirstChild->fPrevSibling = child; |
| 593 | } |
| 594 | |
| 595 | child->fParent = this; |
| 596 | child->inval(NULL); |
| 597 | |
| 598 | this->invokeLayout(); |
| 599 | DONE: |
| 600 | return child; |
| 601 | } |
| 602 | |
| 603 | void SkView::detachAllChildren() |
| 604 | { |
| 605 | while (fFirstChild) |
| 606 | fFirstChild->detachFromParent_NoLayout(); |
| 607 | } |
| 608 | |
reed@google.com | f03bb56 | 2011-11-11 21:42:12 +0000 | [diff] [blame^] | 609 | void SkView::localToGlobal(SkMatrix* matrix) const |
| 610 | { |
| 611 | if (matrix) { |
| 612 | matrix->reset(); |
| 613 | const SkView* view = this; |
| 614 | while (view) |
| 615 | { |
| 616 | matrix->preConcat(view->getLocalMatrix()); |
| 617 | matrix->preTranslate(-view->fLoc.fX, -view->fLoc.fY); |
| 618 | view = view->fParent; |
| 619 | } |
| 620 | } |
| 621 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 622 | void SkView::globalToLocal(SkScalar x, SkScalar y, SkPoint* local) const |
| 623 | { |
| 624 | SkASSERT(this); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 625 | if (local) |
| 626 | { |
reed@google.com | f03bb56 | 2011-11-11 21:42:12 +0000 | [diff] [blame^] | 627 | SkMatrix m; |
| 628 | this->localToGlobal(&m); |
| 629 | SkPoint p; |
| 630 | m.invert(&m); |
| 631 | m.mapXY(x, y, &p); |
| 632 | local->set(p.fX, p.fY); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 633 | } |
| 634 | } |
| 635 | |
| 636 | ////////////////////////////////////////////////////////////////// |
| 637 | |
| 638 | /* Even if the subclass overrides onInflate, they should always be |
| 639 | sure to call the inherited method, so that we get called. |
| 640 | */ |
| 641 | void SkView::onInflate(const SkDOM& dom, const SkDOM::Node* node) |
| 642 | { |
| 643 | SkScalar x, y; |
| 644 | |
| 645 | x = this->locX(); |
| 646 | y = this->locY(); |
| 647 | (void)dom.findScalar(node, "x", &x); |
| 648 | (void)dom.findScalar(node, "y", &y); |
| 649 | this->setLoc(x, y); |
| 650 | |
| 651 | x = this->width(); |
| 652 | y = this->height(); |
| 653 | (void)dom.findScalar(node, "width", &x); |
| 654 | (void)dom.findScalar(node, "height", &y); |
| 655 | this->setSize(x, y); |
| 656 | |
| 657 | // inflate the flags |
| 658 | |
| 659 | static const char* gFlagNames[] = { |
| 660 | "visible", "enabled", "focusable", "flexH", "flexV" |
| 661 | }; |
| 662 | SkASSERT(SK_ARRAY_COUNT(gFlagNames) == kFlagShiftCount); |
| 663 | |
| 664 | bool b; |
| 665 | uint32_t flags = this->getFlags(); |
| 666 | for (unsigned i = 0; i < SK_ARRAY_COUNT(gFlagNames); i++) |
| 667 | if (dom.findBool(node, gFlagNames[i], &b)) |
| 668 | flags = SkSetClearShift(flags, b, i); |
| 669 | this->setFlags(flags); |
| 670 | } |
| 671 | |
| 672 | void SkView::inflate(const SkDOM& dom, const SkDOM::Node* node) |
| 673 | { |
| 674 | this->onInflate(dom, node); |
| 675 | } |
| 676 | |
| 677 | void SkView::onPostInflate(const SkTDict<SkView*>&) |
| 678 | { |
| 679 | // override in subclass as needed |
| 680 | } |
| 681 | |
| 682 | void SkView::postInflate(const SkTDict<SkView*>& dict) |
| 683 | { |
| 684 | this->onPostInflate(dict); |
| 685 | |
| 686 | B2FIter iter(this); |
| 687 | SkView* child; |
| 688 | while ((child = iter.next()) != NULL) |
| 689 | child->postInflate(dict); |
| 690 | } |
| 691 | |
| 692 | ////////////////////////////////////////////////////////////////// |
| 693 | |
| 694 | SkView* SkView::sendEventToParents(const SkEvent& evt) |
| 695 | { |
| 696 | SkView* parent = fParent; |
reed@android.com | 34245c7 | 2009-11-03 04:00:48 +0000 | [diff] [blame] | 697 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 698 | while (parent) |
| 699 | { |
| 700 | if (parent->doEvent(evt)) |
| 701 | return parent; |
| 702 | parent = parent->fParent; |
| 703 | } |
| 704 | return NULL; |
| 705 | } |
| 706 | |
reed@android.com | 34245c7 | 2009-11-03 04:00:48 +0000 | [diff] [blame] | 707 | SkView* SkView::sendQueryToParents(SkEvent* evt) { |
| 708 | SkView* parent = fParent; |
| 709 | |
| 710 | while (parent) { |
| 711 | if (parent->doQuery(evt)) { |
| 712 | return parent; |
| 713 | } |
| 714 | parent = parent->fParent; |
| 715 | } |
| 716 | return NULL; |
| 717 | } |
| 718 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 719 | ////////////////////////////////////////////////////////////////// |
| 720 | ////////////////////////////////////////////////////////////////// |
| 721 | |
| 722 | SkView::F2BIter::F2BIter(const SkView* parent) |
| 723 | { |
| 724 | fFirstChild = parent ? parent->fFirstChild : NULL; |
| 725 | fChild = fFirstChild ? fFirstChild->fPrevSibling : NULL; |
| 726 | } |
| 727 | |
| 728 | SkView* SkView::F2BIter::next() |
| 729 | { |
| 730 | SkView* curr = fChild; |
| 731 | |
| 732 | if (fChild) |
| 733 | { |
| 734 | if (fChild == fFirstChild) |
| 735 | fChild = NULL; |
| 736 | else |
| 737 | fChild = fChild->fPrevSibling; |
| 738 | } |
| 739 | return curr; |
| 740 | } |
| 741 | |
| 742 | SkView::B2FIter::B2FIter(const SkView* parent) |
| 743 | { |
| 744 | fFirstChild = parent ? parent->fFirstChild : NULL; |
| 745 | fChild = fFirstChild; |
| 746 | } |
| 747 | |
| 748 | SkView* SkView::B2FIter::next() |
| 749 | { |
| 750 | SkView* curr = fChild; |
| 751 | |
| 752 | if (fChild) |
| 753 | { |
| 754 | SkView* next = fChild->fNextSibling; |
| 755 | if (next == fFirstChild) |
| 756 | next = NULL; |
| 757 | fChild = next; |
| 758 | } |
| 759 | return curr; |
| 760 | } |
| 761 | |
| 762 | ////////////////////////////////////////////////////////////////// |
| 763 | ////////////////////////////////////////////////////////////////// |
| 764 | |
| 765 | #ifdef SK_DEBUG |
| 766 | |
| 767 | static inline void show_if_nonzero(const char name[], SkScalar value) |
| 768 | { |
| 769 | if (value) |
| 770 | SkDebugf("%s=\"%g\"", name, value/65536.); |
| 771 | } |
| 772 | |
| 773 | static void tab(int level) |
| 774 | { |
| 775 | for (int i = 0; i < level; i++) |
| 776 | SkDebugf(" "); |
| 777 | } |
| 778 | |
| 779 | static void dumpview(const SkView* view, int level, bool recurse) |
| 780 | { |
| 781 | tab(level); |
| 782 | |
| 783 | SkDebugf("<view"); |
| 784 | show_if_nonzero(" x", view->locX()); |
| 785 | show_if_nonzero(" y", view->locY()); |
| 786 | show_if_nonzero(" width", view->width()); |
| 787 | show_if_nonzero(" height", view->height()); |
| 788 | |
| 789 | if (recurse) |
| 790 | { |
| 791 | SkView::B2FIter iter(view); |
| 792 | SkView* child; |
| 793 | bool noChildren = true; |
| 794 | |
| 795 | while ((child = iter.next()) != NULL) |
| 796 | { |
| 797 | if (noChildren) |
| 798 | SkDebugf(">\n"); |
| 799 | noChildren = false; |
| 800 | dumpview(child, level + 1, true); |
| 801 | } |
| 802 | |
| 803 | if (!noChildren) |
| 804 | { |
| 805 | tab(level); |
| 806 | SkDebugf("</view>\n"); |
| 807 | } |
| 808 | else |
| 809 | goto ONELINER; |
| 810 | } |
| 811 | else |
| 812 | { |
| 813 | ONELINER: |
| 814 | SkDebugf(" />\n"); |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | void SkView::dump(bool recurse) const |
| 819 | { |
| 820 | dumpview(this, 0, recurse); |
| 821 | } |
| 822 | |
| 823 | #endif |