qstatusbar.cpp

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39 -

40 #include "qstatusbar.h" -

41 #ifndef QT_NO_STATUSBAR -

42 -

43 #include "qlist.h" -

44 #include "qdebug.h" -

45 #include "qevent.h" -

46 #include "qlayout.h" -

47 #include "qpainter.h" -

48 #include "qtimer.h" -

49 #include "qstyle.h" -

50 #include "qstyleoption.h" -

51 #include "qsizegrip.h" -

52 #include "qmainwindow.h" -

53 -

54 #ifndef QT_NO_ACCESSIBILITY -

55 #include "qaccessible.h" -

56 #endif -

57 -

58 #include <private/qlayoutengine_p.h> -

59 #include <private/qwidget_p.h> -

60 -

61 QT_BEGIN_NAMESPACE -

62 -

63 class QStatusBarPrivate : public QWidgetPrivate -

64 { -

65 Q_DECLARE_PUBLIC(QStatusBar) -

66 public: -

67 QStatusBarPrivate() {} -

68 -

69 struct SBItem { -

70 SBItem(QWidget* widget, int stretch, bool permanent) -

71 : s(stretch), w(widget), p(permanent) {} -

72 int s; -

73 QWidget * w; -

74 bool p; -

75 }; -

76 -

77 QList<SBItem *> items; -

78 QString tempItem; -

79 -

80 QBoxLayout * box; -

81 QTimer * timer; -

82 -

83 #ifndef QT_NO_SIZEGRIP -

84 QSizeGrip * resizer; -

85 bool showSizeGrip; -

86 #endif -

87 -

88 int savedStrut; -

89 -

90 #ifdef Q_DEAD_CODE_FROM_QT4_MAC -

91 QPoint dragStart; -

92 #endif -

93 -

94 int indexToLastNonPermanentWidget() const -

95 { -

96 int i = items.size() - 1; -

97 for (; i >= 0; --i) { -

98 SBItem *item = items.at(i); -

99 if (!(item && item->p)) -

100 break; -

101 } -

102 return i; -

103 } -

104 -

105 #ifndef QT_NO_SIZEGRIP -

106 void tryToShowSizeGrip() -

107 { -

108 if (!showSizeGrip) -

109 return; -

110 showSizeGrip = false; -

111 if (!resizer || resizer->isVisible()) -

112 return; -

113 resizer->setAttribute(Qt::WA_WState_ExplicitShowHide, false); -

114 QMetaObject::invokeMethod(resizer, "_q_showIfNotHidden", Qt::DirectConnection); -

115 resizer->setAttribute(Qt::WA_WState_ExplicitShowHide, false); -

116 } -

117 #endif -

118 -

119 QRect messageRect() const; -

120 }; -

121 -

122 -

123 QRect QStatusBarPrivate::messageRect() const -

124 { -

125 Q_Q(const QStatusBar); -

126 bool rtl = q->layoutDirection() == Qt::RightToLeft; -

127 -

128 int left = 6; -

129 int right = q->width() - 12; -

130 -

131 #ifndef QT_NO_SIZEGRIP -

132 if (resizer && resizer->isVisible()) { -

133 if (rtl) -

134 left = resizer->x() + resizer->width(); -

135 else -

136 right = resizer->x(); -

137 } -

138 #endif -

139 -

140 for (int i=0; i<items.size(); ++i) { -

141 QStatusBarPrivate::SBItem* item = items.at(i); -

142 if (!item) -

143 break; -

144 if (item->p && item->w->isVisible()) { -

145 if (item->p) { -

146 if (rtl) -

147 left = qMax(left, item->w->x() + item->w->width() + 2); -

148 else -

149 right = qMin(right, item->w->x() - 2); -

150 } -

151 break; -

152 } -

153 } -

154 return QRect(left, 0, right-left, q->height()); -

155 } -

156 -

157 -

158 /*! -

159 \class QStatusBar -

160 \brief The QStatusBar class provides a horizontal bar suitable for -

161 presenting status information. -

162 -

163 \ingroup mainwindow-classes -

164 \ingroup helpsystem -

165 \inmodule QtWidgets -

166 -

167 Each status indicator falls into one of three categories: -

168 -

169 \list -

170 \li \e Temporary - briefly occupies most of the status bar. Used -

171 to explain tool tip texts or menu entries, for example. -

172 \li \e Normal - occupies part of the status bar and may be hidden -

173 by temporary messages. Used to display the page and line -

174 number in a word processor, for example. -

175 \li \e Permanent - is never hidden. Used for important mode -

176 indications, for example, some applications put a Caps Lock -

177 indicator in the status bar. -

178 \endlist -

179 -

180 QStatusBar lets you display all three types of indicators. -

181 -

182 Typically, a request for the status bar functionality occurs in -

183 relation to a QMainWindow object. QMainWindow provides a main -

184 application window, with a menu bar, tool bars, dock widgets \e -

185 and a status bar around a large central widget. The status bar can -

186 be retrieved using the QMainWindow::statusBar() function, and -

187 replaced using the QMainWindow::setStatusBar() function. -

188 -

189 Use the showMessage() slot to display a \e temporary message: -

190 -

191 \snippet mainwindows/dockwidgets/mainwindow.cpp 8 -

192 -

193 To remove a temporary message, use the clearMessage() slot, or set -

194 a time limit when calling showMessage(). For example: -

195 -

196 \snippet mainwindows/dockwidgets/mainwindow.cpp 3 -

197 -

198 Use the currentMessage() function to retrieve the temporary -

199 message currently shown. The QStatusBar class also provide the -

200 messageChanged() signal which is emitted whenever the temporary -

201 status message changes. -

202 -

203 \target permanent message -

204 \e Normal and \e Permanent messages are displayed by creating a -

205 small widget (QLabel, QProgressBar or even QToolButton) and then -

206 adding it to the status bar using the addWidget() or the -

207 addPermanentWidget() function. Use the removeWidget() function to -

208 remove such messages from the status bar. -

209 -

210 \snippet code/src_gui_widgets_qstatusbar.cpp 0 -

211 -

212 By default QStatusBar provides a QSizeGrip in the lower-right -

213 corner. You can disable it using the setSizeGripEnabled() -

214 function. Use the isSizeGripEnabled() function to determine the -

215 current status of the size grip. -

216 -

217 \image fusion-statusbar-sizegrip.png A status bar shown in the Fusion widget style -

218 -

219 \sa QMainWindow, QStatusTipEvent, {fowler}{GUI Design Handbook: -

220 Status Bar}, {Application Example} -

221 */ -

222 -

223 -

224 /*! -

225 Constructs a status bar with a size grip and the given \a parent. -

226 -

227 \sa setSizeGripEnabled() -

228 */ -

229 QStatusBar::QStatusBar(QWidget * parent) -

230 : QWidget(*new QStatusBarPrivate, parent, 0) -

231 { -

232 Q_D(QStatusBar); -

233 d->box = 0; -

234 d->timer = 0; -

235 -

236 #ifndef QT_NO_SIZEGRIP -

237 d->resizer = 0; -

238 setSizeGripEnabled(true); // causes reformat() -

239 #else -

240 reformat(); -

241 #endif -

242 } -

243 -

244 /*! -

245 Destroys this status bar and frees any allocated resources and -

246 child widgets. -

247 */ -

248 QStatusBar::~QStatusBar() -

249 { -

250 Q_D(QStatusBar); -

251 while (!d->items.isEmpty()) -

252 delete d->items.takeFirst(); -

253 } -

254 -

255 -

256 /*! -

257 Adds the given \a widget to this status bar, reparenting the -

258 widget if it isn't already a child of this QStatusBar object. The -

259 \a stretch parameter is used to compute a suitable size for the -

260 given \a widget as the status bar grows and shrinks. The default -

261 stretch factor is 0, i.e giving the widget a minimum of space. -

262 -

263 The widget is located to the far left of the first permanent -

264 widget (see addPermanentWidget()) and may be obscured by temporary -

265 messages. -

266 -

267 \sa insertWidget(), removeWidget(), addPermanentWidget() -

268 */ -

269 -

270 void QStatusBar::addWidget(QWidget * widget, int stretch) -

271 { -

272 if (!widget) -

273 return; -

274 insertWidget(d_func()->indexToLastNonPermanentWidget() + 1, widget, stretch); -

275 } -

276 -

277 /*! -

278 \since 4.2 -

279 -

280 Inserts the given \a widget at the given \a index to this status bar, -

281 reparenting the widget if it isn't already a child of this -

282 QStatusBar object. If \a index is out of range, the widget is appended -

283 (in which case it is the actual index of the widget that is returned). -

284 -

285 The \a stretch parameter is used to compute a suitable size for -

286 the given \a widget as the status bar grows and shrinks. The -

287 default stretch factor is 0, i.e giving the widget a minimum of -

288 space. -

289 -

290 The widget is located to the far left of the first permanent -

291 widget (see addPermanentWidget()) and may be obscured by temporary -

292 messages. -

293 -

294 \sa addWidget(), removeWidget(), addPermanentWidget() -

295 */ -

296 int QStatusBar::insertWidget(int index, QWidget *widget, int stretch) -

297 { -

298

if (!widget)

!widget	Description
TRUE	never evaluated
FALSE	never evaluated

299

return -1;

never executed: return -1;

300 -

301 Q_D(QStatusBar); -

302 QStatusBarPrivate::SBItem* item = new QStatusBarPrivate::SBItem(widget, stretch, false); -

303 -

304 int idx = d->indexToLastNonPermanentWidget(); -

305

if (Q_UNLIKELY(index < 0 || index > d->items.size() || (idx >= 0 && index > idx + 1))))) {

__builtin_expe... + 1)), false)	Description
TRUE	never evaluated
FALSE	never evaluated

306 qWarning("QStatusBar::insertWidget: Index out of range (%d), appending widget", index); -

307 index = idx + 1; -

308

}

never executed: end of block

309 d->items.insert(index, item); -

310 -

311

if (!d->tempItem.isEmpty())

!d->tempItem.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

312

widget->hide();

never executed: widget->hide();

313 -

314 reformat(); -

315

if (!widget->isHidden() || !widget->testAttribute(Qt::WA_WState_ExplicitShowHide))

!widget->isHidden()	Description
TRUE	never evaluated
FALSE	never evaluated

!widget->testA...licitShowHide)	Description
TRUE	never evaluated
FALSE	never evaluated

316

widget->show();

never executed: widget->show();

317 -

318

return index;

never executed: return index;

319 } -

320 -

321 /*! -

322 Adds the given \a widget permanently to this status bar, -

323 reparenting the widget if it isn't already a child of this -

324 QStatusBar object. The \a stretch parameter is used to compute a -

325 suitable size for the given \a widget as the status bar grows and -

326 shrinks. The default stretch factor is 0, i.e giving the widget a -

327 minimum of space. -

328 -

329 Permanently means that the widget may not be obscured by temporary -

330 messages. It is is located at the far right of the status bar. -

331 -

332 \sa insertPermanentWidget(), removeWidget(), addWidget() -

333 */ -

334 -

335 void QStatusBar::addPermanentWidget(QWidget * widget, int stretch) -

336 { -

337 if (!widget) -

338 return; -

339 insertPermanentWidget(d_func()->items.size(), widget, stretch); -

340 } -

341 -

342 -

343 /*! -

344 \since 4.2 -

345 -

346 Inserts the given \a widget at the given \a index permanently to this status bar, -

347 reparenting the widget if it isn't already a child of this -

348 QStatusBar object. If \a index is out of range, the widget is appended -

349 (in which case it is the actual index of the widget that is returned). -

350 -

351 The \a stretch parameter is used to compute a -

352 suitable size for the given \a widget as the status bar grows and -

353 shrinks. The default stretch factor is 0, i.e giving the widget a -

354 minimum of space. -

355 -

356 Permanently means that the widget may not be obscured by temporary -

357 messages. It is is located at the far right of the status bar. -

358 -

359 \sa addPermanentWidget(), removeWidget(), addWidget() -

360 */ -

361 int QStatusBar::insertPermanentWidget(int index, QWidget *widget, int stretch) -

362 { -

363

if (!widget)

!widget	Description
TRUE	never evaluated
FALSE	never evaluated

364

return -1;

never executed: return -1;

365 -

366 Q_D(QStatusBar); -

367 QStatusBarPrivate::SBItem* item = new QStatusBarPrivate::SBItem(widget, stretch, true); -

368 -

369 int idx = d->indexToLastNonPermanentWidget(); -

370

if (Q_UNLIKELY(index < 0 || index > d->items.size() || (idx >= 0 && index <= idx))))) {

__builtin_expe... idx)), false)	Description
TRUE	never evaluated
FALSE	never evaluated

371 qWarning("QStatusBar::insertPermanentWidget: Index out of range (%d), appending widget", index); -

372 index = d->items.size(); -

373

}

never executed: end of block

374 d->items.insert(index, item); -

375 -

376 reformat(); -

377

if (!widget->isHidden() || !widget->testAttribute(Qt::WA_WState_ExplicitShowHide))

!widget->isHidden()	Description
TRUE	never evaluated
FALSE	never evaluated

!widget->testA...licitShowHide)	Description
TRUE	never evaluated
FALSE	never evaluated

378

widget->show();

never executed: widget->show();

379 -

380

return index;

never executed: return index;

381 } -

382 -

383 /*! -

384 Removes the specified \a widget from the status bar. -

385 -

386 \note This function does not delete the widget but \e hides it. -

387 To add the widget again, you must call both the addWidget() and -

388 show() functions. -

389 -

390 \sa addWidget(), addPermanentWidget(), clearMessage() -

391 */ -

392 -

393 void QStatusBar::removeWidget(QWidget *widget) -

394 { -

395 if (!widget) -

396 return; -

397 -

398 Q_D(QStatusBar); -

399 bool found = false; -

400 QStatusBarPrivate::SBItem* item; -

401 for (int i=0; i<d->items.size(); ++i) { -

402 item = d->items.at(i); -

403 if (!item) -

404 break; -

405 if (item->w == widget) { -

406 d->items.removeAt(i); -

407 item->w->hide(); -

408 delete item; -

409 found = true; -

410 break; -

411 } -

412 } -

413 -

414 if (found) -

415 reformat(); -

416 #if defined(QT_DEBUG) -

417 else -

418 qDebug("QStatusBar::removeWidget(): Widget not found."); -

419 #endif -

420 } -

421 -

422 /*! -

423 \property QStatusBar::sizeGripEnabled -

424 -

425 \brief whether the QSizeGrip in the bottom-right corner of the -

426 status bar is enabled -

427 -

428 The size grip is enabled by default. -

429 */ -

430 -

431 bool QStatusBar::isSizeGripEnabled() const -

432 { -

433 #ifdef QT_NO_SIZEGRIP -

434 return false; -

435 #else -

436 Q_D(const QStatusBar); -

437 return !!d->resizer; -

438 #endif -

439 } -

440 -

441 void QStatusBar::setSizeGripEnabled(bool enabled) -

442 { -

443 #ifdef QT_NO_SIZEGRIP -

444 Q_UNUSED(enabled); -

445 #else -

446 Q_D(QStatusBar); -

447 if (!enabled != !d->resizer) { -

448 if (enabled) { -

449 d->resizer = new QSizeGrip(this); -

450 d->resizer->hide(); -

451 d->resizer->installEventFilter(this); -

452 d->showSizeGrip = true; -

453 } else { -

454 delete d->resizer; -

455 d->resizer = 0; -

456 d->showSizeGrip = false; -

457 } -

458 reformat(); -

459 if (d->resizer && isVisible()) -

460 d->tryToShowSizeGrip(); -

461 } -

462 #endif -

463 } -

464 -

465 -

466 /*! -

467 Changes the status bar's appearance to account for item changes. -

468 -

469 Special subclasses may need this function, but geometry management -

470 will usually take care of any necessary rearrangements. -

471 */ -

472 void QStatusBar::reformat() -

473 { -

474 Q_D(QStatusBar); -

475 if (d->box) -

476 delete d->box; -

477 -

478 QBoxLayout *vbox; -

479 #ifndef QT_NO_SIZEGRIP -

480 if (d->resizer) { -

481 d->box = new QHBoxLayout(this); -

482 d->box->setMargin(0); -

483 vbox = new QVBoxLayout; -

484 d->box->addLayout(vbox); -

485 } else -

486 #endif -

487 { -

488 vbox = d->box = new QVBoxLayout(this); -

489 d->box->setMargin(0); -

490 } -

491 vbox->addSpacing(3); -

492 QBoxLayout* l = new QHBoxLayout; -

493 vbox->addLayout(l); -

494 l->addSpacing(2); -

495 l->setSpacing(6); -

496 -

497 int maxH = fontMetrics().height(); -

498 -

499 int i; -

500 QStatusBarPrivate::SBItem* item; -

501 for (i=0,item=0; i<d->items.size(); ++i) { -

502 item = d->items.at(i); -

503 if (!item || item->p) -

504 break; -

505 l->addWidget(item->w, item->s); -

506 int itemH = qMin(qSmartMinSize(item->w).height(), item->w->maximumHeight()); -

507 maxH = qMax(maxH, itemH); -

508 } -

509 -

510 l->addStretch(0); -

511 -

512 for (item=0; i<d->items.size(); ++i) { -

513 item = d->items.at(i); -

514 if (!item) -

515 break; -

516 l->addWidget(item->w, item->s); -

517 int itemH = qMin(qSmartMinSize(item->w).height(), item->w->maximumHeight()); -

518 maxH = qMax(maxH, itemH); -

519 } -

520 #ifndef QT_NO_SIZEGRIP -

521 if (d->resizer) { -

522 maxH = qMax(maxH, d->resizer->sizeHint().height()); -

523 d->box->addSpacing(1); -

524 d->box->addWidget(d->resizer, 0, Qt::AlignBottom); -

525 } -

526 #endif -

527 l->addStrut(maxH); -

528 d->savedStrut = maxH; -

529 vbox->addSpacing(2); -

530 d->box->activate(); -

531 update(); -

532 } -

533 -

534 /*! -

535 -

536 Hides the normal status indications and displays the given \a -

537 message for the specified number of milli-seconds (\a{timeout}). If -

538 \a{timeout} is 0 (default), the \a {message} remains displayed until -

539 the clearMessage() slot is called or until the showMessage() slot is -

540 called again to change the message. -

541 -

542 Note that showMessage() is called to show temporary explanations of -

543 tool tip texts, so passing a \a{timeout} of 0 is not sufficient to -

544 display a \l{permanent message}{permanent message}. -

545 -

546 \sa messageChanged(), currentMessage(), clearMessage() -

547 */ -

548 void QStatusBar::showMessage(const QString &message, int timeout) -

549 { -

550 Q_D(QStatusBar); -

551 -

552 if (timeout > 0) { -

553 if (!d->timer) { -

554 d->timer = new QTimer(this); -

555 connect(d->timer, SIGNAL(timeout()), this, SLOT(clearMessage())); -

556 } -

557 d->timer->start(timeout); -

558 } else if (d->timer) { -

559 delete d->timer; -

560 d->timer = 0; -

561 } -

562 if (d->tempItem == message) -

563 return; -

564 d->tempItem = message; -

565 -

566 hideOrShow(); -

567 } -

568 -

569 /*! -

570 Removes any temporary message being shown. -

571 -

572 \sa currentMessage(), showMessage(), removeWidget() -

573 */ -

574 -

575 void QStatusBar::clearMessage() -

576 { -

577 Q_D(QStatusBar); -

578 if (d->tempItem.isEmpty()) -

579 return; -

580 if (d->timer) { -

581 qDeleteInEventHandler(d->timer); -

582 d->timer = 0; -

583 } -

584 d->tempItem.clear(); -

585 hideOrShow(); -

586 } -

587 -

588 /*! -

589 Returns the temporary message currently shown, -

590 or an empty string if there is no such message. -

591 -

592 \sa showMessage() -

593 */ -

594 QString QStatusBar::currentMessage() const -

595 { -

596 Q_D(const QStatusBar); -

597 return d->tempItem; -

598 } -

599 -

600 /*! -

601 \fn QStatusBar::messageChanged(const QString &message) -

602 -

603 This signal is emitted whenever the temporary status message -

604 changes. The new temporary message is passed in the \a message -

605 parameter which is a null-string when the message has been -

606 removed. -

607 -

608 \sa showMessage(), clearMessage() -

609 */ -

610 -

611 /*! -

612 Ensures that the right widgets are visible. -

613 -

614 Used by the showMessage() and clearMessage() functions. -

615 */ -

616 void QStatusBar::hideOrShow() -

617 { -

618 Q_D(QStatusBar); -

619 bool haveMessage = !d->tempItem.isEmpty(); -

620 -

621 QStatusBarPrivate::SBItem* item = 0; -

622 for (int i=0; i<d->items.size(); ++i) { -

623 item = d->items.at(i); -

624 if (!item || item->p) -

625 break; -

626 if (haveMessage && item->w->isVisible()) { -

627 item->w->hide(); -

628 item->w->setAttribute(Qt::WA_WState_ExplicitShowHide, false); -

629 } else if (!haveMessage && !item->w->testAttribute(Qt::WA_WState_ExplicitShowHide)) { -

630 item->w->show(); -

631 } -

632 } -

633 -

634 emit messageChanged(d->tempItem); -

635 -

636 #ifndef QT_NO_ACCESSIBILITY -

637 if (QAccessible::isActive()) { -

638 QAccessibleEvent event(this, QAccessible::NameChanged); -

639 QAccessible::updateAccessibility(&event); -

640 } -

641 #endif -

642 -

643 repaint(d->messageRect()); -

644 } -

645 -

646 /*! -

647 \reimp -

648 */ -

649 void QStatusBar::showEvent(QShowEvent *) -

650 { -

651 #ifndef QT_NO_SIZEGRIP -

652 Q_D(QStatusBar); -

653 if (d->resizer && d->showSizeGrip) -

654 d->tryToShowSizeGrip(); -

655 #endif -

656 } -

657 -

658 /*! -

659 \reimp -

660 \fn void QStatusBar::paintEvent(QPaintEvent *event) -

661 -

662 Shows the temporary message, if appropriate, in response to the -

663 paint \a event. -

664 */ -

665 void QStatusBar::paintEvent(QPaintEvent *event) -

666 { -

667 Q_D(QStatusBar); -

668 bool haveMessage = !d->tempItem.isEmpty(); -

669 -

670 QPainter p(this); -

671 QStyleOption opt; -

672 opt.initFrom(this); -

673 style()->drawPrimitive(QStyle::PE_PanelStatusBar, &opt, &p, this); -

674 -

675 for (int i=0; i<d->items.size(); ++i) { -

676 QStatusBarPrivate::SBItem* item = d->items.at(i); -

677 if (item && item->w->isVisible() && (!haveMessage || item->p)) { -

678 QRect ir = item->w->geometry().adjusted(-2, -1, 2, 1); -

679 if (event->rect().intersects(ir)) { -

680 QStyleOption opt(0); -

681 opt.rect = ir; -

682 opt.palette = palette(); -

683 opt.state = QStyle::State_None; -

684 style()->drawPrimitive(QStyle::PE_FrameStatusBarItem, &opt, &p, item->w); -

685 } -

686 } -

687 } -

688 if (haveMessage) { -

689 p.setPen(palette().foreground().color()); -

690 p.drawText(d->messageRect(), Qt::AlignLeading | Qt::AlignVCenter | Qt::TextSingleLine, d->tempItem); -

691 } -

692 } -

693 -

694 /*! -

695 \reimp -

696 */ -

697 void QStatusBar::resizeEvent(QResizeEvent * e) -

698 { -

699 QWidget::resizeEvent(e); -

700 } -

701 -

702 /*! -

703 \reimp -

704 */ -

705 -

706 bool QStatusBar::event(QEvent *e) -

707 { -

708 Q_D(QStatusBar); -

709 -

710 if (e->type() == QEvent::LayoutRequest -

711 ) { -

712 // Calculate new strut height and call reformat() if it has changed -

713 int maxH = fontMetrics().height(); -

714 -

715 QStatusBarPrivate::SBItem* item = 0; -

716 for (int i=0; i<d->items.size(); ++i) { -

717 item = d->items.at(i); -

718 if (!item) -

719 break; -

720 int itemH = qMin(qSmartMinSize(item->w).height(), item->w->maximumHeight()); -

721 maxH = qMax(maxH, itemH); -

722 } -

723 -

724 #ifndef QT_NO_SIZEGRIP -

725 if (d->resizer) -

726 maxH = qMax(maxH, d->resizer->sizeHint().height()); -

727 #endif -

728 -

729 if (maxH != d->savedStrut) -

730 reformat(); -

731 else -

732 update(); -

733 } -

734 if (e->type() == QEvent::ChildRemoved) { -

735 QStatusBarPrivate::SBItem* item = 0; -

736 for (int i=0; i<d->items.size(); ++i) { -

737 item = d->items.at(i); -

738 if (!item) -

739 break; -

740 if (item->w == ((QChildEvent*)e)->child()) { -

741 d->items.removeAt(i); -

742 delete item; -

743 } -

744 } -

745 } -

746 -

747 // On Mac OS X Leopard it is possible to drag the window by clicking -

748 // on the tool bar on most applications. -

749 #ifndef Q_DEAD_CODE_FROM_QT4_MAC -

750 return QWidget::event(e); -

751 #else -

752 if (QSysInfo::MacintoshVersion <= QSysInfo::MV_10_4) -

753 return QWidget::event(e); -

754 -

755 // Enable drag-click only if the status bar is the status bar for a -

756 // QMainWindow with a unifed toolbar. -

757 if (parent() == 0 || qobject_cast<QMainWindow *>(parent()) == 0 || -

758 qobject_cast<QMainWindow *>(parent())->unifiedTitleAndToolBarOnMac() == false ) -

759 return QWidget::event(e); -

760 -

761 // Check for mouse events. -

762 QMouseEvent *mouseEvent; -

763 if (e->type() == QEvent::MouseButtonPress || -

764 e->type() == QEvent::MouseMove || -

765 e->type() == QEvent::MouseButtonRelease) { -

766 mouseEvent = static_cast <QMouseEvent*>(e); -

767 } else { -

768 return QWidget::event(e); -

769 } -

770 -

771 // The following is a standard mouse drag handler. -

772 if (e->type() == QEvent::MouseButtonPress && (mouseEvent->button() == Qt::LeftButton)) { -

773 d->dragStart = mouseEvent->pos(); -

774 } else if (e->type() == QEvent::MouseMove){ -

775 if (d->dragStart == QPoint()) -

776 return QWidget::event(e); -

777 QPoint pos = mouseEvent->pos(); -

778 QPoint delta = (pos - d->dragStart); -

779 window()->move(window()->pos() + delta); -

780 } else if (e->type() == QEvent::MouseButtonRelease && (mouseEvent->button() == Qt::LeftButton)){ -

781 d->dragStart = QPoint(); -

782 } else { -

783 return QWidget::event(e); -

784 } -

785 -

786 return true; -

787 #endif -

788 } -

789 -

790 QT_END_NAMESPACE -

791 -

792 #include "moc_qstatusbar.cpp" -

793 -

794 #endif -

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