qcolumnview.cpp

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39 -

40 #include <qglobal.h> -

41 -

42 #ifndef QT_NO_COLUMNVIEW -

43 -

44 #include "qcolumnview.h" -

45 #include "qcolumnview_p.h" -

46 #include "qcolumnviewgrip_p.h" -

47 -

48 #include <qlistview.h> -

49 #include <qabstractitemdelegate.h> -

50 #include <qscrollbar.h> -

51 #include <qpainter.h> -

52 #include <qdebug.h> -

53 -

54 QT_BEGIN_NAMESPACE -

55 -

56 #define ANIMATION_DURATION_MSEC 150 -

57 -

58 /*! -

59 \since 4.3 -

60 \class QColumnView -

61 \brief The QColumnView class provides a model/view implementation of a column view. -

62 \ingroup model-view -

63 \ingroup advanced -

64 \inmodule QtWidgets -

65 -

66 QColumnView displays a model in a number of QListViews, one for each -

67 hierarchy in the tree. This is sometimes referred to as a cascading list. -

68 -

69 The QColumnView class is one of the \l{Model/View Classes} -

70 and is part of Qt's \l{Model/View Programming}{model/view framework}. -

71 -

72 QColumnView implements the interfaces defined by the -

73 QAbstractItemView class to allow it to display data provided by -

74 models derived from the QAbstractItemModel class. -

75 -

76 \image qcolumnview.png -

77 -

78 \sa {Model/View Programming} -

79 */ -

80 -

81 /*! -

82 Constructs a column view with a \a parent to represent a model's -

83 data. Use setModel() to set the model. -

84 -

85 \sa QAbstractItemModel -

86 */ -

87 QColumnView::QColumnView(QWidget * parent) -

88 : QAbstractItemView(*new QColumnViewPrivate, parent) -

89 { -

90 Q_D(QColumnView); -

91 d->initialize(); -

92 } -

93 -

94 /*! -

95 \internal -

96 */ -

97 QColumnView::QColumnView(QColumnViewPrivate & dd, QWidget * parent) -

98 : QAbstractItemView(dd, parent) -

99 { -

100 Q_D(QColumnView); -

101 d->initialize(); -

102 } -

103 -

104 void QColumnViewPrivate::initialize() -

105 { -

106 Q_Q(QColumnView); -

107 q->setTextElideMode(Qt::ElideMiddle); -

108 #ifndef QT_NO_ANIMATION -

109 QObject::connect(&currentAnimation, SIGNAL(finished()), q, SLOT(_q_changeCurrentColumn())); -

110 currentAnimation.setDuration(ANIMATION_DURATION_MSEC); -

111 currentAnimation.setTargetObject(hbar); -

112 currentAnimation.setPropertyName("value"); -

113 currentAnimation.setEasingCurve(QEasingCurve::InOutQuad); -

114 #endif //QT_NO_ANIMATION -

115 delete itemDelegate; -

116 q->setItemDelegate(new QColumnViewDelegate(q)); -

117 } -

118 -

119 /*! -

120 Destroys the column view. -

121 */ -

122 QColumnView::~QColumnView() -

123 { -

124 } -

125 -

126 /*! -

127 \property QColumnView::resizeGripsVisible -

128 \brief the way to specify if the list views gets resize grips or not -

129 -

130 By default, \c visible is set to true -

131 -

132 \sa setRootIndex() -

133 */ -

134 void QColumnView::setResizeGripsVisible(bool visible) -

135 { -

136 Q_D(QColumnView); -

137 if (d->showResizeGrips == visible) -

138 return; -

139 d->showResizeGrips = visible; -

140 for (int i = 0; i < d->columns.count(); ++i) { -

141 QAbstractItemView *view = d->columns[i]; -

142 if (visible) { -

143 QColumnViewGrip *grip = new QColumnViewGrip(view); -

144 view->setCornerWidget(grip); -

145 connect(grip, SIGNAL(gripMoved(int)), this, SLOT(_q_gripMoved(int))); -

146 } else { -

147 QWidget *widget = view->cornerWidget(); -

148 view->setCornerWidget(0); -

149 widget->deleteLater(); -

150 } -

151 } -

152 } -

153 -

154 bool QColumnView::resizeGripsVisible() const -

155 { -

156 Q_D(const QColumnView); -

157 return d->showResizeGrips; -

158 } -

159 -

160 /*! -

161 \reimp -

162 */ -

163 void QColumnView::setModel(QAbstractItemModel *model) -

164 { -

165 Q_D(QColumnView); -

166 if (model == d->model) -

167 return; -

168 d->closeColumns(); -

169 QAbstractItemView::setModel(model); -

170 } -

171 -

172 /*! -

173 \reimp -

174 */ -

175 void QColumnView::setRootIndex(const QModelIndex &index) -

176 { -

177 Q_D(QColumnView); -

178 if (!model()) -

179 return; -

180 -

181 d->closeColumns(); -

182 Q_ASSERT(d->columns.count() == 0); -

183 -

184 QAbstractItemView *view = d->createColumn(index, true); -

185 if (view->selectionModel()) -

186 view->selectionModel()->deleteLater(); -

187 if (view->model()) -

188 view->setSelectionModel(selectionModel()); -

189 -

190 QAbstractItemView::setRootIndex(index); -

191 d->updateScrollbars(); -

192 } -

193 -

194 /*! -

195 \reimp -

196 */ -

197 bool QColumnView::isIndexHidden(const QModelIndex &index) const -

198 { -

199 Q_UNUSED(index); -

200 return false; -

201 } -

202 -

203 /*! -

204 \reimp -

205 */ -

206 QModelIndex QColumnView::indexAt(const QPoint &point) const -

207 { -

208 Q_D(const QColumnView); -

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

210 QPoint topLeft = d->columns.at(i)->frameGeometry().topLeft(); -

211 QPoint adjustedPoint(point.x() - topLeft.x(), point.y() - topLeft.y()); -

212 QModelIndex index = d->columns.at(i)->indexAt(adjustedPoint); -

213 if (index.isValid()) -

214 return index; -

215 } -

216 return QModelIndex(); -

217 } -

218 -

219 /*! -

220 \reimp -

221 */ -

222 QRect QColumnView::visualRect(const QModelIndex &index) const -

223 { -

224 if (!index.isValid()) -

225 return QRect(); -

226 -

227 Q_D(const QColumnView); -

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

229 QRect rect = d->columns.at(i)->visualRect(index); -

230 if (!rect.isNull()) { -

231 rect.translate(d->columns.at(i)->frameGeometry().topLeft()); -

232 return rect; -

233 } -

234 } -

235 return QRect(); -

236 } -

237 -

238 /*! -

239 \reimp -

240 */ -

241 void QColumnView::scrollContentsBy(int dx, int dy) -

242 { -

243 Q_D(QColumnView); -

244 if (d->columns.isEmpty() || dx == 0) -

245 return; -

246 -

247 dx = isRightToLeft() ? -dx : dx; -

248 for (int i = 0; i < d->columns.count(); ++i) -

249 d->columns.at(i)->move(d->columns.at(i)->x() + dx, 0); -

250 d->offset += dx; -

251 QAbstractItemView::scrollContentsBy(dx, dy); -

252 } -

253 -

254 /*! -

255 \reimp -

256 */ -

257 void QColumnView::scrollTo(const QModelIndex &index, ScrollHint hint) -

258 { -

259 Q_D(QColumnView); -

260 Q_UNUSED(hint); -

261 if (!index.isValid() || d->columns.isEmpty()) -

262 return; -

263 -

264 #ifndef QT_NO_ANIMATION -

265 if (d->currentAnimation.state() == QPropertyAnimation::Running) -

266 return; -

267 -

268 d->currentAnimation.stop(); -

269 #endif //QT_NO_ANIMATION -

270 -

271 // Fill up what is needed to get to index -

272 d->closeColumns(index, true); -

273 -

274 QModelIndex indexParent = index.parent(); -

275 // Find the left edge of the column that contains index -

276 int currentColumn = 0; -

277 int leftEdge = 0; -

278 while (currentColumn < d->columns.size()) { -

279 if (indexParent == d->columns.at(currentColumn)->rootIndex()) -

280 break; -

281 leftEdge += d->columns.at(currentColumn)->width(); -

282 ++currentColumn; -

283 } -

284 -

285 // Don't let us scroll above the root index -

286 if (currentColumn == d->columns.size()) -

287 return; -

288 -

289 int indexColumn = currentColumn; -

290 // Find the width of what we want to show (i.e. the right edge) -

291 int visibleWidth = d->columns.at(currentColumn)->width(); -

292 // We want to always try to show two columns -

293 if (currentColumn + 1 < d->columns.size()) { -

294 ++currentColumn; -

295 visibleWidth += d->columns.at(currentColumn)->width(); -

296 } -

297 -

298 int rightEdge = leftEdge + visibleWidth; -

299 if (isRightToLeft()) { -

300 leftEdge = viewport()->width() - leftEdge; -

301 rightEdge = leftEdge - visibleWidth; -

302 qSwap(rightEdge, leftEdge); -

303 } -

304 -

305 // If it is already visible don't animate -

306 if (leftEdge > -horizontalOffset() -

307 && rightEdge <= ( -horizontalOffset() + viewport()->size().width())) { -

308 d->columns.at(indexColumn)->scrollTo(index); -

309 d->_q_changeCurrentColumn(); -

310 return; -

311 } -

312 -

313 int newScrollbarValue = 0; -

314 if (isRightToLeft()) { -

315 if (leftEdge < 0) { -

316 // scroll to the right -

317 newScrollbarValue = viewport()->size().width() - leftEdge; -

318 } else { -

319 // scroll to the left -

320 newScrollbarValue = rightEdge + horizontalOffset(); -

321 } -

322 } else { -

323 if (leftEdge > -horizontalOffset()) { -

324 // scroll to the right -

325 newScrollbarValue = rightEdge - viewport()->size().width(); -

326 } else { -

327 // scroll to the left -

328 newScrollbarValue = leftEdge; -

329 } -

330 } -

331 -

332 #ifndef QT_NO_ANIMATION -

333 if (style()->styleHint(QStyle::SH_Widget_Animate, 0, this)) { -

334 d->currentAnimation.setEndValue(newScrollbarValue); -

335 d->currentAnimation.start(); -

336 } else -

337 #endif //QT_NO_ANIMATION -

338 { -

339 horizontalScrollBar()->setValue(newScrollbarValue); -

340 } -

341 } -

342 -

343 /*! -

344 \reimp -

345 Move left should go to the parent index -

346 Move right should go to the child index or down if there is no child -

347 */ -

348 QModelIndex QColumnView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers) -

349 { -

350 // the child views which have focus get to deal with this first and if -

351 // they don't accept it then it comes up this view and we only grip left/right -

352 Q_UNUSED(modifiers); -

353 if (!model()) -

354 return QModelIndex(); -

355 -

356 QModelIndex current = currentIndex(); -

357 if (isRightToLeft()) { -

358 if (cursorAction == MoveLeft) -

359 cursorAction = MoveRight; -

360 else if (cursorAction == MoveRight) -

361 cursorAction = MoveLeft; -

362 } -

363 switch (cursorAction) { -

364 case MoveLeft: -

365 if (current.parent().isValid() && current.parent() != rootIndex()) -

366 return (current.parent()); -

367 else -

368 return current; -

369 -

370 case MoveRight: -

371 if (model()->hasChildren(current)) -

372 return model()->index(0, 0, current); -

373 else -

374 return current.sibling(current.row() + 1, current.column()); -

375 -

376 default: -

377 break; -

378 } -

379 -

380 return QModelIndex(); -

381 } -

382 -

383 /*! -

384 \reimp -

385 */ -

386 void QColumnView::resizeEvent(QResizeEvent *event) -

387 { -

388 Q_D(QColumnView); -

389 d->doLayout(); -

390 d->updateScrollbars(); -

391 if (!isRightToLeft()) { -

392 int diff = event->oldSize().width() - event->size().width(); -

393 if (diff < 0 && horizontalScrollBar()->isVisible() -

394 && horizontalScrollBar()->value() == horizontalScrollBar()->maximum()) { -

395 horizontalScrollBar()->setMaximum(horizontalScrollBar()->maximum() + diff); -

396 } -

397 } -

398 QAbstractItemView::resizeEvent(event); -

399 } -

400 -

401 /*! -

402 \internal -

403 */ -

404 void QColumnViewPrivate::updateScrollbars() -

405 { -

406 Q_Q(QColumnView); -

407 #ifndef QT_NO_ANIMATION -

408

if (currentAnimation.state() == QPropertyAnimation::Running)

currentAnimati...ation::Running	Description
TRUE	never evaluated
FALSE	never evaluated

409

return;

never executed: return;

410 #endif //QT_NO_ANIMATION -

411 -

412 // find the total horizontal length of the laid out columns -

413 int horizontalLength = 0; -

414

if (!columns.isEmpty()) {

!columns.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

415 horizontalLength = (columns.lastconstLast()->x() + columns.lastconstLast()->width()) - columns.firstconstFirst()->x(); -

416

if (horizontalLength <= 0) // reverse mode

horizontalLength <= 0	Description
TRUE	never evaluated
FALSE	never evaluated

417

horizontalLength = (columns.firstconstFirst()->x() + columns.firstconstFirst()->width()) - columns.lastconstLast()->x();

never executed: horizontalLength = (columns.constFirst()->x() + columns.constFirst()->width()) - columns.constLast()->x();

418

}

never executed: end of block

419 -

420 QSize viewportSize = viewport->size(); -

421

if (horizontalLength < viewportSize.width() && hbar->value() == 0) {

horizontalLeng...rtSize.width()	Description
TRUE	never evaluated
FALSE	never evaluated

hbar->value() == 0	Description
TRUE	never evaluated
FALSE	never evaluated

422 hbar->setRange(0, 0); -

423

} else {

never executed: end of block

424 int visibleLength = qMin(horizontalLength + q->horizontalOffset(), viewportSize.width()); -

425 int hiddenLength = horizontalLength - visibleLength; -

426

if (hiddenLength != hbar->maximum())

hiddenLength !...bar->maximum()	Description
TRUE	never evaluated
FALSE	never evaluated

427

hbar->setRange(0, hiddenLength);

never executed: hbar->setRange(0, hiddenLength);

428

}

never executed: end of block

429

if (!columns.isEmpty()) {

!columns.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

430 int pageStepSize = columns.at(0)->width(); -

431

if (pageStepSize != hbar->pageStep())

pageStepSize !...ar->pageStep()	Description
TRUE	never evaluated
FALSE	never evaluated

432

hbar->setPageStep(pageStepSize);

never executed: hbar->setPageStep(pageStepSize);

433

}

never executed: end of block

434 bool visible = (hbar->maximum() > 0); -

435

if (visible != hbar->isVisible())

visible != hbar->isVisible()	Description
TRUE	never evaluated
FALSE	never evaluated

436

hbar->setVisible(visible);

never executed: hbar->setVisible(visible);

437

}

never executed: end of block

438 -

439 /*! -

440 \reimp -

441 */ -

442 int QColumnView::horizontalOffset() const -

443 { -

444 Q_D(const QColumnView); -

445 return d->offset; -

446 } -

447 -

448 /*! -

449 \reimp -

450 */ -

451 int QColumnView::verticalOffset() const -

452 { -

453 return 0; -

454 } -

455 -

456 /*! -

457 \reimp -

458 */ -

459 QRegion QColumnView::visualRegionForSelection(const QItemSelection &selection) const -

460 { -

461 int ranges = selection.count(); -

462 -

463 if (ranges == 0) -

464 return QRect(); -

465 -

466 // Note that we use the top and bottom functions of the selection range -

467 // since the data is stored in rows. -

468 int firstRow = selection.at(0).top(); -

469 int lastRow = selection.at(0).top(); -

470 for (int i = 0; i < ranges; ++i) { -

471 firstRow = qMin(firstRow, selection.at(i).top()); -

472 lastRow = qMax(lastRow, selection.at(i).bottom()); -

473 } -

474 -

475 QModelIndex firstIdx = model()->index(qMin(firstRow, lastRow), 0, rootIndex()); -

476 QModelIndex lastIdx = model()->index(qMax(firstRow, lastRow), 0, rootIndex()); -

477 -

478 if (firstIdx == lastIdx) -

479 return visualRect(firstIdx); -

480 -

481 QRegion firstRegion = visualRect(firstIdx); -

482 QRegion lastRegion = visualRect(lastIdx); -

483 return firstRegion.united(lastRegion); -

484 } -

485 -

486 /*! -

487 \reimp -

488 */ -

489 void QColumnView::setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags command) -

490 { -

491 Q_UNUSED(rect); -

492 Q_UNUSED(command); -

493 } -

494 -

495 /*! -

496 \reimp -

497 */ -

498 void QColumnView::setSelectionModel(QItemSelectionModel *newSelectionModel) -

499 { -

500 Q_D(const QColumnView); -

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

502 if (d->columns.at(i)->selectionModel() == selectionModel()) { -

503 d->columns.at(i)->setSelectionModel(newSelectionModel); -

504 break; -

505 } -

506 } -

507 QAbstractItemView::setSelectionModel(newSelectionModel); -

508 } -

509 -

510 /*! -

511 \reimp -

512 */ -

513 QSize QColumnView::sizeHint() const -

514 { -

515 Q_D(const QColumnView); -

516 QSize sizeHint; -

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

518 sizeHint += d->columns.at(i)->sizeHint(); -

519 } -

520 return sizeHint.expandedTo(QAbstractItemView::sizeHint()); -

521 } -

522 -

523 /*! -

524 \internal -

525 Move all widgets from the corner grip and to the right -

526 */ -

527 void QColumnViewPrivate::_q_gripMoved(int offset) -

528 { -

529 Q_Q(QColumnView); -

530 -

531 QObject *grip = q->sender(); -

532 Q_ASSERT(grip); -

533 -

534 if (q->isRightToLeft()) -

535 offset = -1 * offset; -

536 -

537 bool found = false; -

538 for (int i = 0; i < columns.size(); ++i) { -

539 if (!found && columns.at(i)->cornerWidget() == grip) { -

540 found = true; -

541 columnSizes[i] = columns.at(i)->width(); -

542 if (q->isRightToLeft()) -

543 columns.at(i)->move(columns.at(i)->x() + offset, 0); -

544 continue; -

545 } -

546 if (!found) -

547 continue; -

548 -

549 int currentX = columns.at(i)->x(); -

550 columns.at(i)->move(currentX + offset, 0); -

551 } -

552 -

553 updateScrollbars(); -

554 } -

555 -

556 /*! -

557 \internal -

558 -

559 Find where the current columns intersect parent's columns -

560 -

561 Delete any extra columns and insert any needed columns. -

562 */ -

563 void QColumnViewPrivate::closeColumns(const QModelIndex &parent, bool build) -

564 { -

565

if (columns.isEmpty())

columns.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

566

return;

never executed: return;

567 -

568 bool clearAll = !parent.isValid(); -

569 bool passThroughRoot = false; -

570 -

571 QListQVector<QModelIndex> dirsToAppend; -

572 -

573 // Find the last column that matches the parent's tree -

574 int currentColumn = -1; -

575 QModelIndex parentIndex = parent; -

576

while (currentColumn == -1 && parentIndex.isValid()) {

currentColumn == -1	Description
TRUE	never evaluated
FALSE	never evaluated

parentIndex.isValid()	Description
TRUE	never evaluated
FALSE	never evaluated

577

if (columns.isEmpty())

columns.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

578

break;

never executed: break;

579 parentIndex = parentIndex.parent(); -

580

if (root == parentIndex)

root == parentIndex	Description
TRUE	never evaluated
FALSE	never evaluated

581

passThroughRoot = true;

never executed: passThroughRoot = true;

582

if (!parentIndex.isValid())

!parentIndex.isValid()	Description
TRUE	never evaluated
FALSE	never evaluated

583

break;

never executed: break;

584

for (int i = columns.size() - 1; i >= 0; --i) {

i >= 0	Description
TRUE	never evaluated
FALSE	never evaluated

585

if (columns.at(i)->rootIndex() == parentIndex) {

columns.at(i)-...== parentIndex	Description
TRUE	never evaluated
FALSE	never evaluated

586 currentColumn = i; -

587

break;

never executed: break;

588 } -

589

}

never executed: end of block

590

if (currentColumn == -1)

currentColumn == -1	Description
TRUE	never evaluated
FALSE	never evaluated

591

dirsToAppend.append(parentIndex);

never executed: dirsToAppend.append(parentIndex);

592

}

never executed: end of block

593 -

594 // Someone wants to go to an index that can be reached without changing -

595 // the root index, don't allow them -

596

if (!clearAll && !passThroughRoot && currentColumn == -1)

!clearAll	Description
TRUE	never evaluated
FALSE	never evaluated

!passThroughRoot	Description
TRUE	never evaluated
FALSE	never evaluated

currentColumn == -1	Description
TRUE	never evaluated
FALSE	never evaluated

597

return;

never executed: return;

598 -

599

if (currentColumn == -1 && parent.isValid())

currentColumn == -1	Description
TRUE	never evaluated
FALSE	never evaluated

parent.isValid()	Description
TRUE	never evaluated
FALSE	never evaluated

600

currentColumn = 0;

never executed: currentColumn = 0;

601 -

602 // Optimization so we don't go deleting and then creating the same thing -

603 bool alreadyExists = false; -

604

if (build && columns.size() > currentColumn + 1) {

build	Description
TRUE	never evaluated
FALSE	never evaluated

columns.size()...rentColumn + 1	Description
TRUE	never evaluated
FALSE	never evaluated

605 bool viewingParent = (columns.at(currentColumn + 1)->rootIndex() == parent); -

606

bool viewingChild = (!model->hasChildren(parent)

!model->hasChildren(parent)	Description
TRUE	never evaluated
FALSE	never evaluated

607

&& !columns.at(currentColumn + 1)->rootIndex().isValid());

!columns.at(cu...ex().isValid()	Description
TRUE	never evaluated
FALSE	never evaluated

608

if (viewingParent || viewingChild) {

viewingParent	Description
TRUE	never evaluated
FALSE	never evaluated

viewingChild	Description
TRUE	never evaluated
FALSE	never evaluated

609 currentColumn++; -

610 alreadyExists = true; -

611

}

never executed: end of block

612

}

never executed: end of block

613 -

614 // Delete columns that don't match our path -

615

for (int i = columns.size() - 1; i > currentColumn; --i) {

i > currentColumn	Description
TRUE	never evaluated
FALSE	never evaluated

616 QAbstractItemView* notShownAnymore = columns.at(i); -

617 columns.removeAt(i); -

618 notShownAnymore->setVisible(false); -

619

if (notShownAnymore != previewColumn)

notShownAnymor... previewColumn	Description
TRUE	never evaluated
FALSE	never evaluated

620

notShownAnymore->deleteLater();

never executed: notShownAnymore->deleteLater();

621

}

never executed: end of block

622 -

623

if (columns.isEmpty()) {

columns.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

624 offset = 0; -

625 updateScrollbars(); -

626

}

never executed: end of block

627 -

628 // Now fill in missing columns -

629

while (!dirsToAppend.isEmpty()) {

!dirsToAppend.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

630 QAbstractItemView *newView = createColumn(dirsToAppend.takeLast(), true); -

631

if (!dirsToAppend.isEmpty())

!dirsToAppend.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

632

newView->setCurrentIndex(dirsToAppend.lastconstLast());

never executed: newView->setCurrentIndex(dirsToAppend.constLast());

633

}

never executed: end of block

634 -

635

if (build && !alreadyExists)

build	Description
TRUE	never evaluated
FALSE	never evaluated

!alreadyExists	Description
TRUE	never evaluated
FALSE	never evaluated

636

createColumn(parent, false);

never executed: createColumn(parent, false);

637

}

never executed: end of block

638 -

639 void QColumnViewPrivate::_q_clicked(const QModelIndex &index) -

640 { -

641 Q_Q(QColumnView); -

642 QModelIndex parent = index.parent(); -

643 QAbstractItemView *columnClicked = 0; -

644 for (int column = 0; column < columns.count(); ++column) { -

645 if (columns.at(column)->rootIndex() == parent) { -

646 columnClicked = columns[column]; -

647 break; -

648 } -

649 } -

650 if (q->selectionModel() && columnClicked) { -

651 QItemSelectionModel::SelectionFlags flags = QItemSelectionModel::Current; -

652 if (columnClicked->selectionModel()->isSelected(index)) -

653 flags |= QItemSelectionModel::Select; -

654 q->selectionModel()->setCurrentIndex(index, flags); -

655 } -

656 } -

657 -

658 /*! -

659 \internal -

660 Create a new column for \a index. A grip is attached if requested and it is shown -

661 if requested. -

662 -

663 Return the new view -

664 -

665 \sa createColumn(), setPreviewWidget() -

666 \sa doLayout() -

667 */ -

668 QAbstractItemView *QColumnViewPrivate::createColumn(const QModelIndex &index, bool show) -

669 { -

670 Q_Q(QColumnView); -

671 QAbstractItemView *view = 0; -

672

if (model->hasChildren(index)) {

model->hasChildren(index)	Description
TRUE	never evaluated
FALSE	never evaluated

673 view = q->createColumn(index); -

674 q->connect(view, SIGNAL(clicked(QModelIndex)), -

675 q, SLOT(_q_clicked(QModelIndex))); -

676

} else {

never executed: end of block

677

if (!previewColumn)

!previewColumn	Description
TRUE	never evaluated
FALSE	never evaluated

678

setPreviewWidget(new QWidget(q));

never executed: setPreviewWidget(new QWidget(q));

679 view = previewColumn; -

680 view->setMinimumWidth(qMax(view->minimumWidth(), previewWidget->minimumWidth())); -

681

}

never executed: end of block

682 -

683 q->connect(view, SIGNAL(activated(QModelIndex)), -

684 q, SIGNAL(activated(QModelIndex))); -

685 q->connect(view, SIGNAL(clicked(QModelIndex)), -

686 q, SIGNAL(clicked(QModelIndex))); -

687 q->connect(view, SIGNAL(doubleClicked(QModelIndex)), -

688 q, SIGNAL(doubleClicked(QModelIndex))); -

689 q->connect(view, SIGNAL(entered(QModelIndex)), -

690 q, SIGNAL(entered(QModelIndex))); -

691 q->connect(view, SIGNAL(pressed(QModelIndex)), -

692 q, SIGNAL(pressed(QModelIndex))); -

693 -

694 view->setFocusPolicy(Qt::NoFocus); -

695 view->setParent(viewport); -

696 Q_ASSERT(view); -

697 -

698 // Setup corner grip -

699

if (showResizeGrips) {

showResizeGrips	Description
TRUE	never evaluated
FALSE	never evaluated

700 QColumnViewGrip *grip = new QColumnViewGrip(view); -

701 view->setCornerWidget(grip); -

702 q->connect(grip, SIGNAL(gripMoved(int)), q, SLOT(_q_gripMoved(int))); -

703

}

never executed: end of block

704 -

705

if (columnSizes.count() > columns.count()) {

columnSizes.co...olumns.count()	Description
TRUE	never evaluated
FALSE	never evaluated

706 view->setGeometry(0, 0, columnSizes.at(columns.count()), viewport->height()); -

707

} else {

never executed: end of block

708 int initialWidth = view->sizeHint().width(); -

709

if (q->isRightToLeft())

q->isRightToLeft()	Description
TRUE	never evaluated
FALSE	never evaluated

710

view->setGeometry(viewport->width() - initialWidth, 0, initialWidth, viewport->height());

never executed: view->setGeometry(viewport->width() - initialWidth, 0, initialWidth, viewport->height());

711 else -

712

view->setGeometry(0, 0, initialWidth, viewport->height());

never executed: view->setGeometry(0, 0, initialWidth, viewport->height());

713 columnSizes.resize(qMax(columnSizes.count(), columns.count() + 1)); -

714 columnSizes[columns.count()] = initialWidth; -

715

}

never executed: end of block

716

if (!columns.isEmpty() && columns.lastconstLast()->isHidden())

!columns.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

columns.constL...()->isHidden()	Description
TRUE	never evaluated
FALSE	never evaluated

717

columns.lastconstLast()->setVisible(true);

never executed: columns.constLast()->setVisible(true);

718 -

719 columns.append(view); -

720 doLayout(); -

721 updateScrollbars(); -

722

if (show && view->isHidden())

show	Description
TRUE	never evaluated
FALSE	never evaluated

view->isHidden()	Description
TRUE	never evaluated
FALSE	never evaluated

723

view->setVisible(true);

never executed: view->setVisible(true);

724

return view;

never executed: return view;

725 } -

726 -

727 /*! -

728 \fn void QColumnView::updatePreviewWidget(const QModelIndex &index) -

729 -

730 This signal is emitted when the preview widget should be updated to -

731 provide rich information about \a index -

732 -

733 \sa previewWidget() -

734 */ -

735 -

736 /*! -

737 To use a custom widget for the final column when you select -

738 an item overload this function and return a widget. -

739 \a index is the root index that will be assigned to the view. -

740 -

741 Return the new view. QColumnView will automatically take ownership of the widget. -

742 -

743 \sa setPreviewWidget() -

744 */ -

745 QAbstractItemView *QColumnView::createColumn(const QModelIndex &index) -

746 { -

747 QListView *view = new QListView(viewport()); -

748 -

749 initializeColumn(view); -

750 -

751 view->setRootIndex(index); -

752 if (model()->canFetchMore(index)) -

753 model()->fetchMore(index); -

754 -

755 return view; -

756 } -

757 -

758 /*! -

759 Copies the behavior and options of the column view and applies them to -

760 the \a column such as the iconSize(), textElideMode() and -

761 alternatingRowColors(). This can be useful when reimplementing -

762 createColumn(). -

763 -

764 \since 4.4 -

765 \sa createColumn() -

766 */ -

767 void QColumnView::initializeColumn(QAbstractItemView *column) const -

768 { -

769 Q_D(const QColumnView); -

770 -

771 column->setFrameShape(QFrame::NoFrame); -

772 column->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); -

773 column->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn); -

774 column->setMinimumWidth(100); -

775 column->setAttribute(Qt::WA_MacShowFocusRect, false); -

776 -

777 #ifndef QT_NO_DRAGANDDROP -

778 column->setDragDropMode(dragDropMode()); -

779 column->setDragDropOverwriteMode(dragDropOverwriteMode()); -

780 column->setDropIndicatorShown(showDropIndicator()); -

781 #endif -

782 column->setAlternatingRowColors(alternatingRowColors()); -

783 column->setAutoScroll(hasAutoScroll()); -

784 column->setEditTriggers(editTriggers()); -

785 column->setHorizontalScrollMode(horizontalScrollMode()); -

786 column->setIconSize(iconSize()); -

787 column->setSelectionBehavior(selectionBehavior()); -

788 column->setSelectionMode(selectionMode()); -

789 column->setTabKeyNavigation(tabKeyNavigation()); -

790 column->setTextElideMode(textElideMode()); -

791 column->setVerticalScrollMode(verticalScrollMode()); -

792 -

793 column->setModel(model()); -

794 -

795 // Copy the custom delegate per row -

796

QMapIterator<int, QPointer<QAbstractItemDelegate> > ifor (auto i = d->rowDelegates);

i != end	Description
TRUE	never evaluated
FALSE	never evaluated

while (i

i != end	Description
TRUE	never evaluated
FALSE	never evaluated

.hasNext()) {

i != end	Description
TRUE	never evaluated
FALSE	never evaluated

i != end	Description
TRUE	never evaluated
FALSE	never evaluated

cbegin(), end = d->rowDelegates.nextcend(); i != end; ++i)

i != end	Description
TRUE	never evaluated
FALSE	never evaluated

797

column->setItemDelegateForRow(i.key(), i.value());

never executed: column->setItemDelegateForRow(i.key(), i.value());

798 -

799 }// set the delegate to be the columnview delegate -

800 QAbstractItemDelegate *delegate = column->itemDelegate(); -

801 column->setItemDelegate(d->itemDelegate); -

802 delete delegate; -

803

}

never executed: end of block

804 -

805 /*! -

806 Returns the preview widget, or 0 if there is none. -

807 -

808 \sa setPreviewWidget(), updatePreviewWidget() -

809 */ -

810 QWidget *QColumnView::previewWidget() const -

811 { -

812 Q_D(const QColumnView); -

813 return d->previewWidget; -

814 } -

815 -

816 /*! -

817 Sets the preview \a widget. -

818 -

819 The \a widget becomes a child of the column view, and will be -

820 destroyed when the column area is deleted or when a new widget is -

821 set. -

822 -

823 \sa previewWidget(), updatePreviewWidget() -

824 */ -

825 void QColumnView::setPreviewWidget(QWidget *widget) -

826 { -

827 Q_D(QColumnView); -

828 d->setPreviewWidget(widget); -

829 } -

830 -

831 /*! -

832 \internal -

833 */ -

834 void QColumnViewPrivate::setPreviewWidget(QWidget *widget) -

835 { -

836 Q_Q(QColumnView); -

837

if (previewColumn) {

previewColumn	Description
TRUE	never evaluated
FALSE	never evaluated

838

if (!columns.isEmpty() && columns.lastconstLast() == previewColumn)

!columns.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

columns.constL... previewColumn	Description
TRUE	never evaluated
FALSE	never evaluated

839

columns.removeLast();

never executed: columns.removeLast();

840 previewColumn->deleteLater(); -

841

}

never executed: end of block

842 QColumnViewPreviewColumn *column = new QColumnViewPreviewColumn(q); -

843 column->setPreviewWidget(widget); -

844 previewColumn = column; -

845 previewColumn->hide(); -

846 previewColumn->setFrameShape(QFrame::NoFrame); -

847 previewColumn->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn); -

848 previewColumn->setSelectionMode(QAbstractItemView::NoSelection); -

849 previewColumn->setMinimumWidth(qMax(previewColumn->verticalScrollBar()->width(), -

850 previewColumn->minimumWidth())); -

851 previewWidget = widget; -

852 previewWidget->setParent(previewColumn->viewport()); -

853

}

never executed: end of block

854 -

855 /*! -

856 Sets the column widths to the values given in the \a list. Extra values in the list are -

857 kept and used when the columns are created. -

858 -

859 If list contains too few values, only width of the rest of the columns will not be modified. -

860 -

861 \sa columnWidths(), createColumn() -

862 */ -

863 void QColumnView::setColumnWidths(const QList<int> &list) -

864 { -

865 Q_D(QColumnView); -

866 int i = 0; -

867 const int listCount = list.count(); -

868 const int count = qMin(listCount, d->columns.count()); -

869 for (; i < count; ++i) { -

870 d->columns.at(i)->resize(list.at(i), d->columns.at(i)->height()); -

871 d->columnSizes[i] = list.at(i); -

872 } -

873 -

874 d->columnSizes.reserve(listCount); -

875 for (; i < listCount; ++i) -

876 d->columnSizes.append(list.at(i)); -

877 } -

878 -

879 /*! -

880 Returns a list of the width of all the columns in this view. -

881 -

882 \sa setColumnWidths() -

883 */ -

884 QList<int> QColumnView::columnWidths() const -

885 { -

886 Q_D(const QColumnView); -

887 QList<int> list; -

888 const int columnCount = d->columns.count(); -

889 list.reserve(columnCount); -

890 for (int i = 0; i < columnCount; ++i) -

891 list.append(d->columnSizes.at(i)); -

892 return list; -

893 } -

894 -

895 /*! -

896 \reimp -

897 */ -

898 void QColumnView::rowsInserted(const QModelIndex &parent, int start, int end) -

899 { -

900 QAbstractItemView::rowsInserted(parent, start, end); -

901 d_func()->checkColumnCreation(parent); -

902 } -

903 -

904 /*! -

905 \reimp -

906 */ -

907 void QColumnView::currentChanged(const QModelIndex &current, const QModelIndex &previous) -

908 { -

909 Q_D(QColumnView); -

910 if (!current.isValid()) { -

911 QAbstractItemView::currentChanged(current, previous); -

912 return; -

913 } -

914 -

915 QModelIndex currentParent = current.parent(); -

916 // optimize for just moving up/down in a list where the child view doesn't change -

917 if (currentParent == previous.parent() -

918 && model()->hasChildren(current) && model()->hasChildren(previous)) { -

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

920 if (currentParent == d->columns.at(i)->rootIndex()) { -

921 if (d->columns.size() > i + 1) { -

922 QAbstractItemView::currentChanged(current, previous); -

923 return; -

924 } -

925 break; -

926 } -

927 } -

928 } -

929 -

930 // Scrolling to the right we need to have an empty spot -

931 bool found = false; -

932 if (currentParent == previous) { -

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

934 if (currentParent == d->columns.at(i)->rootIndex()) { -

935 found = true; -

936 if (d->columns.size() < i + 2) { -

937 d->createColumn(current, false); -

938 } -

939 break; -

940 } -

941 } -

942 } -

943 if (!found) -

944 d->closeColumns(current, true); -

945 -

946 if (!model()->hasChildren(current)) -

947 emit updatePreviewWidget(current); -

948 -

949 QAbstractItemView::currentChanged(current, previous); -

950 } -

951 -

952 /* -

953 We have change the current column and need to update focus and selection models -

954 on the new current column. -

955 */ -

956 void QColumnViewPrivate::_q_changeCurrentColumn() -

957 { -

958 Q_Q(QColumnView); -

959

if (columns.isEmpty())

columns.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

960

return;

never executed: return;

961 -

962 QModelIndex current = q->currentIndex(); -

963

if (!current.isValid())

!current.isValid()	Description
TRUE	never evaluated
FALSE	never evaluated

964

return;

never executed: return;

965 -

966 // We might have scrolled far to the left so we need to close all of the children -

967 closeColumns(current, true); -

968 -

969 // Set up the "current" column with focus -

970 int currentColumn = qMax(0, columns.size() - 2); -

971 QAbstractItemView *parentColumn = columns.at(currentColumn); -

972

if (q->hasFocus())

q->hasFocus()	Description
TRUE	never evaluated
FALSE	never evaluated

973

parentColumn->setFocus(Qt::OtherFocusReason);

never executed: parentColumn->setFocus(Qt::OtherFocusReason);

974 q->setFocusProxy(parentColumn); -

975 -

976 // find the column that is our current selection model and give it a new one. -

977

for (int i = 0; i < columns.size(); ++i) {

i < columns.size()	Description
TRUE	never evaluated
FALSE	never evaluated

978

if (columns.at(i)->selectionModel() == q->selectionModel()) {

columns.at(i)-...lectionModel()	Description
TRUE	never evaluated
FALSE	never evaluated

979 QItemSelectionModel *replacementSelectionModel = -

980 new QItemSelectionModel(parentColumn->model()); -

981 replacementSelectionModel->setCurrentIndex( -

982 q->selectionModel()->currentIndex(), QItemSelectionModel::Current); -

983 replacementSelectionModel->select( -

984 q->selectionModel()->selection(), QItemSelectionModel::Select); -

985 QAbstractItemView *view = columns.at(i); -

986 view->setSelectionModel(replacementSelectionModel); -

987 view->setFocusPolicy(Qt::NoFocus); -

988

if (columns.size() > i + 1) {

columns.size() > i + 1	Description
TRUE	never evaluated
FALSE	never evaluated

989 const QModelIndex newRootIndex = columns.at(i + 1)->rootIndex(); -

990

if (newRootIndex.isValid())

newRootIndex.isValid()	Description
TRUE	never evaluated
FALSE	never evaluated

991

view->setCurrentIndex(newRootIndex);

never executed: view->setCurrentIndex(newRootIndex);

992

}

never executed: end of block

993

break;

never executed: break;

994 } -

995

}

never executed: end of block

996 parentColumn->selectionModel()->deleteLater(); -

997 parentColumn->setFocusPolicy(Qt::StrongFocus); -

998 parentColumn->setSelectionModel(q->selectionModel()); -

999 // We want the parent selection to stay highlighted (but dimmed depending upon the color theme) -

1000

if (currentColumn > 0) {

currentColumn > 0	Description
TRUE	never evaluated
FALSE	never evaluated

1001 parentColumn = columns.at(currentColumn - 1); -

1002

if (parentColumn->currentIndex() != current.parent())

parentColumn->...rrent.parent()	Description
TRUE	never evaluated
FALSE	never evaluated

1003

parentColumn->setCurrentIndex(current.parent());

never executed: parentColumn->setCurrentIndex(current.parent());

1004

}

never executed: end of block

1005 -

1006

if (columns.lastconstLast()->isHidden()) {

columns.constL...()->isHidden()	Description
TRUE	never evaluated
FALSE	never evaluated

1007 columns.lastconstLast()->setVisible(true); -

1008

}

never executed: end of block

1009

if (columns.lastconstLast()->selectionModel())

columns.constL...lectionModel()	Description
TRUE	never evaluated
FALSE	never evaluated

1010

columns.lastconstLast()->selectionModel()->clear();

never executed: columns.constLast()->selectionModel()->clear();

1011 updateScrollbars(); -

1012

}

never executed: end of block

1013 -

1014 /*! -

1015 \reimp -

1016 */ -

1017 void QColumnView::selectAll() -

1018 { -

1019 if (!model() || !selectionModel()) -

1020 return; -

1021 -

1022 QModelIndexList indexList = selectionModel()->selectedIndexes(); -

1023 QModelIndex parent = rootIndex(); -

1024 QItemSelection selection; -

1025 if (indexList.count() >= 1) -

1026 parent = indexList.at(0).parent(); -

1027 if (indexList.count() == 1) { -

1028 parent = indexList.at(0); -

1029 if (!model()->hasChildren(parent)) -

1030 parent = parent.parent(); -

1031 else -

1032 selection.append(QItemSelectionRange(parent, parent)); -

1033 } -

1034 -

1035 QModelIndex tl = model()->index(0, 0, parent); -

1036 QModelIndex br = model()->index(model()->rowCount(parent) - 1, -

1037 model()->columnCount(parent) - 1, -

1038 parent); -

1039 selection.append(QItemSelectionRange(tl, br)); -

1040 selectionModel()->select(selection, QItemSelectionModel::ClearAndSelect); -

1041 } -

1042 -

1043 /* -

1044 * private object implementation -

1045 */ -

1046 QColumnViewPrivate::QColumnViewPrivate() -

1047 : QAbstractItemViewPrivate() -

1048 ,showResizeGrips(true) -

1049 ,offset(0) -

1050 ,previewWidget(0) -

1051 ,previewColumn(0) -

1052 { -

1053 } -

1054 -

1055 QColumnViewPrivate::~QColumnViewPrivate() -

1056 { -

1057 } -

1058 -

1059 /*! -

1060 \internal -

1061 -

1062 */ -

1063 void QColumnViewPrivate::_q_columnsInserted(const QModelIndex &parent, int start, int end) -

1064 { -

1065 QAbstractItemViewPrivate::_q_columnsInserted(parent, start, end); -

1066 checkColumnCreation(parent); -

1067 } -

1068 -

1069 /*! -

1070 \internal -

1071 -

1072 Makes sure we create a corresponding column as a result of changing the model. -

1073 -

1074 */ -

1075 void QColumnViewPrivate::checkColumnCreation(const QModelIndex &parent) -

1076 { -

1077 if (parent == q_func()->currentIndex() && model->hasChildren(parent)) { -

1078 //the parent has children and is the current -

1079 //let's try to find out if there is already a mapping that is good -

1080 for (int i = 0; i < columns.count(); ++i) { -

1081 QAbstractItemView *view = columns.at(i); -

1082 if (view->rootIndex() == parent) { -

1083 if (view == previewColumn) { -

1084 //let's recreate the parent -

1085 closeColumns(parent, false); -

1086 createColumn(parent, true /*show*/); -

1087 } -

1088 break; -

1089 } -

1090 } -

1091 } -

1092 } -

1093 -

1094 /*! -

1095 \internal -

1096 Place all of the columns where they belong inside of the viewport, resize as necessary. -

1097 */ -

1098 void QColumnViewPrivate::doLayout() -

1099 { -

1100 Q_Q(QColumnView); -

1101 if (!model || columns.isEmpty()) -

1102 return; -

1103 -

1104 int viewportHeight = viewport->height(); -

1105 int x = columns.at(0)->x(); -

1106 -

1107 if (q->isRightToLeft()) { -

1108 x = viewport->width() + q->horizontalOffset(); -

1109 for (int i = 0; i < columns.size(); ++i) { -

1110 QAbstractItemView *view = columns.at(i); -

1111 x -= view->width(); -

1112 if (x != view->x() || viewportHeight != view->height()) -

1113 view->setGeometry(x, 0, view->width(), viewportHeight); -

1114 } -

1115 } else { -

1116 for (int i = 0; i < columns.size(); ++i) { -

1117 QAbstractItemView *view = columns.at(i); -

1118 int currentColumnWidth = view->width(); -

1119 if (x != view->x() || viewportHeight != view->height()) -

1120 view->setGeometry(x, 0, currentColumnWidth, viewportHeight); -

1121 x += currentColumnWidth; -

1122 } -

1123 } -

1124 } -

1125 -

1126 /*! -

1127 \internal -

1128 -

1129 Draws a delegate with a > if an object has children. -

1130 -

1131 \sa {Model/View Programming}, QItemDelegate -

1132 */ -

1133 void QColumnViewDelegate::paint(QPainter *painter, -

1134 const QStyleOptionViewItem &option, -

1135 const QModelIndex &index) const -

1136 { -

1137 drawBackground(painter, option, index ); -

1138 -

1139 bool reverse = (option.direction == Qt::RightToLeft); -

1140 int width = ((option.rect.height() * 2) / 3); -

1141 // Modify the options to give us room to add an arrow -

1142 QStyleOptionViewItem opt = option; -

1143 if (reverse) -

1144 opt.rect.adjust(width,0,0,0); -

1145 else -

1146 opt.rect.adjust(0,0,-width,0); -

1147 -

1148 if (!(index.model()->flags(index) & Qt::ItemIsEnabled)) { -

1149 opt.showDecorationSelected = true; -

1150 opt.state |= QStyle::State_Selected; -

1151 } -

1152 -

1153 QItemDelegate::paint(painter, opt, index); -

1154 -

1155 if (reverse) -

1156 opt.rect = QRect(option.rect.x(), option.rect.y(), width, option.rect.height()); -

1157 else -

1158 opt.rect = QRect(option.rect.x() + option.rect.width() - width, option.rect.y(), -

1159 width, option.rect.height()); -

1160 -

1161 // Draw > -

1162 if (index.model()->hasChildren(index)) { -

1163 const QWidget *view = opt.widget; -

1164 QStyle *style = view ? view->style() : QApplication::style(); -

1165 style->drawPrimitive(QStyle::PE_IndicatorColumnViewArrow, &opt, painter, view); -

1166 } -

1167 } -

1168 -

1169 QT_END_NAMESPACE -

1170 -

1171 #include "moc_qcolumnview.cpp" -

1172 -

1173 #endif // QT_NO_COLUMNVIEW -

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