qprogressdialog.cpp

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qprogressdialog.cpp

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/****************************************************************************

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** $QT_BEGIN_LICENSE:LGPL$

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** packaging of this file. Please review the following information to

** ensure the GNU Lesser General Public License version 3 requirements

** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.

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** General Public License version 2.0 or (at your option) the GNU General

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** $QT_END_LICENSE$

****************************************************************************/

#include "qprogressdialog.h"

#ifndef QT_NO_PROGRESSDIALOG

#include "qshortcut.h"

#include "qpainter.h"

#include "qdrawutil.h"

#include "qlabel.h"

#include "qprogressbar.h"

#include "qapplication.h"

#include "qstyle.h"

#include "qpushbutton.h"

#include "qcursor.h"

#include "qtimer.h"

#include "qelapsedtimer.h"

#include <private/qdialog_p.h>

#include <limits.h>

QT_BEGIN_NAMESPACE

// If the operation is expected to take this long (as predicted by

// progress time), show the progress dialog.

static const int defaultShowTime = 4000;

// Wait at least this long before attempting to make a prediction.

static const int minWaitTime = 50;

class QProgressDialogPrivate : public QDialogPrivate

{

Q_DECLARE_PUBLIC(QProgressDialog)

public:

QProgressDialogPrivate() : label(0), cancel(0), bar(0),

shown_once(false),

cancellation_flag(false),

setValue_called(false),

showTime(defaultShowTime),

#ifndef QT_NO_SHORTCUT

escapeShortcut(0),

#endif

useDefaultCancelText(false)

{

}

void init(const QString &labelText, const QString &cancelText, int min, int max);

void layout();

void retranslateStrings();

void setCancelButtonText(const QString &cancelButtonText);

void adoptChildWidget(QWidget *c);

void ensureSizeIsAtLeastSizeHint();

void _q_disconnectOnClose();

QLabel *label;

QPushButton *cancel;

QProgressBar *bar;

QTimer *forceTimer;

bool shown_once;

bool cancellation_flag;

bool setValue_called;

QElapsedTimer starttime;

#ifndef QT_NO_CURSOR

100

QCursor parentCursor;

#endif

int showTime;

bool autoClose;

bool autoReset;

bool forceHide;

#ifndef QT_NO_SHORTCUT

107

QShortcut *escapeShortcut;

108

#endif

109

bool useDefaultCancelText;

110

QPointer<QObject> receiverToDisconnectOnClose;

111

QByteArray memberToDisconnectOnClose;

112

};

113

114

void QProgressDialogPrivate::init(const QString &labelText, const QString &cancelText,

115

int min, int max)

116

{

117

Q_Q(QProgressDialog);

118

label = new QLabel(labelText, q);

119

bar = new QProgressBar(q);

120

bar->setRange(min, max);

121

int align = q->style()->styleHint(QStyle::SH_ProgressDialog_TextLabelAlignment, 0, q);

122

label->setAlignment(Qt::Alignment(align));

autoClose = true;

autoReset = true;

forceHide = false;

QObject::connect(q, SIGNAL(canceled()), q, SLOT(cancel()));

127

forceTimer = new QTimer(q);

128

QObject::connect(forceTimer, SIGNAL(timeout()), q, SLOT(forceShow()));

129

if (useDefaultCancelText) {

130

retranslateStrings();

131

} else {

132

q->setCancelButtonText(cancelText);

133

}

134

starttime.start();

135

forceTimer->start(showTime);

136

}

137

138

void QProgressDialogPrivate::layout()

139

{

140

Q_Q(QProgressDialog);

141

int sp = q->style()->pixelMetric(QStyle::PM_DefaultLayoutSpacing);

142

int mtb = q->style()->pixelMetric(QStyle::PM_DefaultTopLevelMargin);

143

int mlr = qMin(q->width() / 10, mtb);

144

const bool centered =

145

bool(q->style()->styleHint(QStyle::SH_ProgressDialog_CenterCancelButton, 0, q));

146

147

int additionalSpacing = 0;

148

QSize cs = cancel ? cancel->sizeHint() : QSize(0,0);

149

QSize bh = bar->sizeHint();

int cspc;

int lh = 0;

// Find spacing and sizes that fit. It is important that a progress

154

// dialog can be made very small if the user demands it so.

155

for (int attempt=5; attempt--;) {

156

cspc = cancel ? cs.height() + sp : 0;

157

lh = qMax(0, q->height() - mtb - bh.height() - sp - cspc);

158

159

if (lh < q->height()/4) {

// Getting cramped

sp /= 2;

mtb /= 2;

if (cancel) {

cs.setHeight(qMax(4,cs.height()-sp-2));

165

}

166

bh.setHeight(qMax(4,bh.height()-sp-1));

} else {

break;

}

}

if (cancel) {

cancel->setGeometry(

centered ? q->width()/2 - cs.width()/2 : q->width() - mlr - cs.width(),

175

q->height() - mtb - cs.height(),

176

cs.width(), cs.height());

}

if (label)

label->setGeometry(mlr, additionalSpacing, q->width() - mlr * 2, lh);

181

bar->setGeometry(mlr, lh + sp + additionalSpacing, q->width() - mlr * 2, bh.height());

182

}

183

184

void QProgressDialogPrivate::retranslateStrings()

185

{

186

if (useDefaultCancelText)

187

setCancelButtonText(QProgressDialog::tr("Cancel"));

188

}

189

190

void QProgressDialogPrivate::_q_disconnectOnClose()

191

{

192

Q_Q(QProgressDialog);

193

if (receiverToDisconnectOnClose) {

194

QObject::disconnect(q, SIGNAL(canceled()), receiverToDisconnectOnClose,

195

memberToDisconnectOnClose);

196

receiverToDisconnectOnClose = 0;

197

}

198

memberToDisconnectOnClose.clear();

}

/*!

\class QProgressDialog

203

\brief The QProgressDialog class provides feedback on the progress of a slow operation.

204

\ingroup standard-dialogs

\inmodule QtWidgets

A progress dialog is used to give the user an indication of how long

209

an operation is going to take, and to demonstrate that the

210

application has not frozen. It can also give the user an opportunity

211

to abort the operation.

212

213

A common problem with progress dialogs is that it is difficult to know

214

when to use them; operations take different amounts of time on different

215

hardware. QProgressDialog offers a solution to this problem:

216

it estimates the time the operation will take (based on time for

217

steps), and only shows itself if that estimate is beyond minimumDuration()

218

(4 seconds by default).

219

220

Use setMinimum() and setMaximum() or the constructor to set the number of

221

"steps" in the operation and call setValue() as the operation

222

progresses. The number of steps can be chosen arbitrarily. It can be the

223

number of files copied, the number of bytes received, the number of

224

iterations through the main loop of your algorithm, or some other

225

suitable unit. Progress starts at the value set by setMinimum(),

226

and the progress dialog shows that the operation has finished when

227

you call setValue() with the value set by setMaximum() as its argument.

228

229

The dialog automatically resets and hides itself at the end of the

230

operation. Use setAutoReset() and setAutoClose() to change this

231

behavior. Note that if you set a new maximum (using setMaximum() or

232

setRange()) that equals your current value(), the dialog will not

233

close regardless.

234

235

There are two ways of using QProgressDialog: modal and modeless.

236

237

Compared to a modeless QProgressDialog, a modal QProgressDialog is simpler

238

to use for the programmer. Do the operation in a loop, call \l setValue() at

239

intervals, and check for cancellation with wasCanceled(). For example:

240

241

\snippet dialogs/dialogs.cpp 3

242

243

A modeless progress dialog is suitable for operations that take

244

place in the background, where the user is able to interact with the

245

application. Such operations are typically based on QTimer (or

246

QObject::timerEvent()), QSocketNotifier, or QUrlOperator; or performed

247

in a separate thread. A QProgressBar in the status bar of your main window

248

is often an alternative to a modeless progress dialog.

249

250

You need to have an event loop to be running, connect the

251

canceled() signal to a slot that stops the operation, and call \l

252

setValue() at intervals. For example:

253

254

\snippet dialogs/dialogs.cpp 4

255

\codeline

256

\snippet dialogs/dialogs.cpp 5

257

\codeline

258

\snippet dialogs/dialogs.cpp 6

259

260

In both modes the progress dialog may be customized by

261

replacing the child widgets with custom widgets by using setLabel(),

262

setBar(), and setCancelButton().

263

The functions setLabelText() and setCancelButtonText()

264

set the texts shown.

265

266

\image fusion-progressdialog.png A progress dialog shown in the Fusion widget style.

267

268

\sa QDialog, QProgressBar, {fowler}{GUI Design Handbook: Progress Indicator},

269

{Find Files Example}, {Pixelator Example}

/*!

Constructs a progress dialog.

Default settings:

\list

\li The label text is empty.

279

\li The cancel button text is (translated) "Cancel".

\li minimum is 0;

\li maximum is 100

\endlist

The \a parent argument is dialog's parent widget. The widget flags, \a f, are

285

passed to the QDialog::QDialog() constructor.

286

287

\sa setLabelText(), setCancelButtonText(), setCancelButton(),

288

setMinimum(), setMaximum()

289

290

291

QProgressDialog::QProgressDialog(QWidget *parent, Qt::WindowFlags f)

292

: QDialog(*(new QProgressDialogPrivate), parent, f)

293

{

294

Q_D(QProgressDialog);

295

d->useDefaultCancelText = true;

296

d->init(QString::fromLatin1(""), QString(), 0, 100);

}

/*!

Constructs a progress dialog.

301

302

The \a labelText is the text used to remind the user what is progressing.

303

304

The \a cancelButtonText is the text to display on the cancel button. If

305

QString() is passed then no cancel button is shown.

306

307

The \a minimum and \a maximum is the number of steps in the operation for

308

which this progress dialog shows progress. For example, if the

309

operation is to examine 50 files, this value minimum value would be 0,

310

and the maximum would be 50. Before examining the first file, call

311

setValue(0). As each file is processed call setValue(1), setValue(2),

312

etc., finally calling setValue(50) after examining the last file.

313

314

The \a parent argument is the dialog's parent widget. The parent, \a parent, and

315

widget flags, \a f, are passed to the QDialog::QDialog() constructor.

316

317

\sa setLabelText(), setLabel(), setCancelButtonText(), setCancelButton(),

318

setMinimum(), setMaximum()

319

320

321

QProgressDialog::QProgressDialog(const QString &labelText,

322

const QString &cancelButtonText,

323

int minimum, int maximum,

324

QWidget *parent, Qt::WindowFlags f)

325

: QDialog(*(new QProgressDialogPrivate), parent, f)

326

{

327

Q_D(QProgressDialog);

328

d->init(labelText, cancelButtonText, minimum, maximum);

}

/*!

Destroys the progress dialog.

334

335

336

QProgressDialog::~QProgressDialog()

{

}

/*!

\fn void QProgressDialog::canceled()

342

343

This signal is emitted when the cancel button is clicked.

344

It is connected to the cancel() slot by default.

\sa wasCanceled()

/*!

Sets the label to \a label. The progress dialog resizes to fit. The

352

label becomes owned by the progress dialog and will be deleted when

353

necessary, so do not pass the address of an object on the stack.

\sa setLabelText()

void QProgressDialog::setLabel(QLabel *label)

359

{

360

Q_D(QProgressDialog);

361

if (label == d->label) {

label == d->label	Description
TRUE	never evaluated
FALSE	never evaluated

362

if (Q_UNLIKELY(label)))

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

363

qWarning("QProgressDialog::setLabel: Attempt to set the same label again");

never executed:

QMessageLogger(__FILE__, 363, __PRETTY_FUNCTION__).warning("QProgressDialog::setLabel: Attempt to set the same label again");

364

return;

never executed: return;

}

delete d->label;

d->label = label;

d->adoptChildWidget(label);

369

}

never executed: end of block

/*!

\property QProgressDialog::labelText

374

\brief the label's text

375

376

The default text is an empty string.

377

378

379

QString QProgressDialog::labelText() const

380

{

381

Q_D(const QProgressDialog);

382

if (d->label)

383

return d->label->text();

return QString();

}

void QProgressDialog::setLabelText(const QString &text)

388

{

389

Q_D(QProgressDialog);

390

if (d->label) {

391

d->label->setText(text);

392

d->ensureSizeIsAtLeastSizeHint();

}

}

/*!

Sets the cancel button to the push button, \a cancelButton. The

399

progress dialog takes ownership of this button which will be deleted

400

when necessary, so do not pass the address of an object that is on

401

the stack, i.e. use new() to create the button. If 0 is passed then

402

no cancel button will be shown.

403

404

\sa setCancelButtonText()

405

406

407

void QProgressDialog::setCancelButton(QPushButton *cancelButton)

408

{

409

Q_D(QProgressDialog);

410

if (d->cancel == cancelButton) {

d->cancel == cancelButton	Description
TRUE	never evaluated
FALSE	never evaluated

411

if (Q_UNLIKELY(cancelButton)))

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

412

qWarning("QProgressDialog::setCancelButton: Attempt to set the same button again");

never executed:

QMessageLogger(__FILE__, 412, __PRETTY_FUNCTION__).warning("QProgressDialog::setCancelButton: Attempt to set the same button again");

413

return;

never executed: return;

414

}

415

delete d->cancel;

416

d->cancel = cancelButton;

417

if (cancelButton) {

cancelButton	Description
TRUE	never evaluated
FALSE	never evaluated

418

connect(d->cancel, SIGNAL(clicked()), this, SIGNAL(canceled()));

419

#ifndef QT_NO_SHORTCUT

420

// FIXME: This only registers the primary key sequence of the cancel action

421

d->escapeShortcut = new QShortcut(QKeySequence::Cancel, this, SIGNAL(canceled()));

422

#endif

423

} else {

never executed: end of block

424

#ifndef QT_NO_SHORTCUT

425

delete d->escapeShortcut;

426

d->escapeShortcut = 0;

427

#endif

428

}

never executed: end of block

429

d->adoptChildWidget(cancelButton);

430

}

never executed: end of block

431

432

/*!

433

Sets the cancel button's text to \a cancelButtonText. If the text

434

is set to QString() then it will cause the cancel button to be

435

hidden and deleted.

436

437

\sa setCancelButton()

438

439

440

void QProgressDialog::setCancelButtonText(const QString &cancelButtonText)

441

{

442

Q_D(QProgressDialog);

443

d->useDefaultCancelText = false;

444

d->setCancelButtonText(cancelButtonText);

445

}

446

447

void QProgressDialogPrivate::setCancelButtonText(const QString &cancelButtonText)

448

{

449

Q_Q(QProgressDialog);

450

451

if (!cancelButtonText.isNull()) {

452

if (cancel) {

453

cancel->setText(cancelButtonText);

454

} else {

455

q->setCancelButton(new QPushButton(cancelButtonText, q));

456

}

457

} else {

458

q->setCancelButton(0);

459

}

460

ensureSizeIsAtLeastSizeHint();

}

/*!

Sets the progress bar widget to \a bar. The progress dialog resizes to

466

fit. The progress dialog takes ownership of the progress \a bar which

467

will be deleted when necessary, so do not use a progress bar

468

allocated on the stack.

469

470

471

void QProgressDialog::setBar(QProgressBar *bar)

472

{

473

Q_D(QProgressDialog);

474

if (Q_UNLIKELY(!bar))) {

__builtin_expe...(!bar), false)	Description
TRUE	never evaluated
FALSE	never evaluated

475

qWarning("QProgressDialog::setBar: Cannot set a null progress bar");

476

return;

never executed: return;

477

}

478

#ifndef QT_NO_DEBUG

479

if (Q_UNLIKELY(value() > 0)))

__builtin_expe...) > 0), false)	Description
TRUE	never evaluated
FALSE	never evaluated

480

qWarning("QProgressDialog::setBar: Cannot set a new progress bar "

never executed:

QMessageLogger(__FILE__, 480, __PRETTY_FUNCTION__).warning("QProgressDialog::setBar: Cannot set a new progress bar " "while the old one is active");

481

"while the old one is active");

never executed:

QMessageLogger(__FILE__, 480, __PRETTY_FUNCTION__).warning("QProgressDialog::setBar: Cannot set a new progress bar " "while the old one is active");

482

#endif

483

if (Q_UNLIKELY(bar == d->bar))) {

__builtin_expe...->bar), false)	Description
TRUE	never evaluated
FALSE	never evaluated

484

qWarning("QProgressDialog::setBar: Attempt to set the same progress bar again");

485

return;

never executed: return;

}

delete d->bar;

d->bar = bar;

d->adoptChildWidget(bar);

490

}

never executed: end of block

491

492

void QProgressDialogPrivate::adoptChildWidget(QWidget *c)

493

{

494

Q_Q(QProgressDialog);

495

496

if (c) {

497

if (c->parentWidget() == q)

498

c->hide(); // until after ensureSizeIsAtLeastSizeHint()

else

c->setParent(q, 0);

}

ensureSizeIsAtLeastSizeHint();

if (c)

c->show();

}

void QProgressDialogPrivate::ensureSizeIsAtLeastSizeHint()

508

{

509

Q_Q(QProgressDialog);

510

511

QSize size = q->sizeHint();

512

if (q->isVisible())

513

size = size.expandedTo(q->size());

q->resize(size);

}

/*!

\property QProgressDialog::wasCanceled

520

\brief whether the dialog was canceled

521

522

523

bool QProgressDialog::wasCanceled() const

524

{

525

Q_D(const QProgressDialog);

526

return d->cancellation_flag;

}

/*!

\property QProgressDialog::maximum

532

\brief the highest value represented by the progress bar

The default is 100.

\sa minimum, setRange()

537

538

539

int QProgressDialog::maximum() const

540

{

541

Q_D(const QProgressDialog);

542

return d->bar->maximum();

543

}

544

545

void QProgressDialog::setMaximum(int maximum)

546

{

547

Q_D(QProgressDialog);

548

d->bar->setMaximum(maximum);

}

/*!

\property QProgressDialog::minimum

553

\brief the lowest value represented by the progress bar

The default is 0.

\sa maximum, setRange()

558

559

560

int QProgressDialog::minimum() const

561

{

562

Q_D(const QProgressDialog);

563

return d->bar->minimum();

564

}

565

566

void QProgressDialog::setMinimum(int minimum)

567

{

568

Q_D(QProgressDialog);

569

d->bar->setMinimum(minimum);

}

/*!

Sets the progress dialog's minimum and maximum values

574

to \a minimum and \a maximum, respectively.

575

576

If \a maximum is smaller than \a minimum, \a minimum becomes the only

577

legal value.

578

579

If the current value falls outside the new range, the progress

580

dialog is reset with reset().

\sa minimum, maximum

void QProgressDialog::setRange(int minimum, int maximum)

585

{

586

Q_D(QProgressDialog);

587

d->bar->setRange(minimum, maximum);

}

/*!

Resets the progress dialog.

593

The progress dialog becomes hidden if autoClose() is true.

594

595

\sa setAutoClose(), setAutoReset()

596

597

598

void QProgressDialog::reset()

599

{

600

Q_D(QProgressDialog);

#ifndef QT_NO_CURSOR

if (value() >= 0) {

if (parentWidget())

parentWidget()->setCursor(d->parentCursor);

605

}

606

#endif

607

if (d->autoClose || d->forceHide)

608

hide();

609

d->bar->reset();

610

d->cancellation_flag = false;

611

d->shown_once = false;

612

d->setValue_called = false;

613

d->forceTimer->stop();

614

615

616

I wish we could disconnect the user slot provided to open() here but

617

unfortunately reset() is usually called before the slot has been invoked.

618

(reset() is itself invoked when canceled() is emitted.)

619

620

if (d->receiverToDisconnectOnClose)

621

QMetaObject::invokeMethod(this, "_q_disconnectOnClose", Qt::QueuedConnection);

}

/*!

Resets the progress dialog. wasCanceled() becomes true until

626

the progress dialog is reset.

627

The progress dialog becomes hidden.

628

629

630

void QProgressDialog::cancel()

631

{

632

Q_D(QProgressDialog);

633

d->forceHide = true;

634

reset();

635

d->forceHide = false;

636

d->cancellation_flag = true;

}

int QProgressDialog::value() const

641

{

642

Q_D(const QProgressDialog);

643

return d->bar->value();

}

/*!

\property QProgressDialog::value

648

\brief the current amount of progress made.

649

650

For the progress dialog to work as expected, you should initially set

651

this property to QProgressDialog::minimum() and finally set it to

652

QProgressDialog::maximum(); you can call setValue() any number of times

653

in-between.

654

655

\warning If the progress dialog is modal

656

(see QProgressDialog::QProgressDialog()),

657

setValue() calls QApplication::processEvents(), so take care that

658

this does not cause undesirable re-entrancy in your code. For example,

659

don't use a QProgressDialog inside a paintEvent()!

\sa minimum, maximum

void QProgressDialog::setValue(int progress)

664

{

665

Q_D(QProgressDialog);

666

if (d->setValue_called && progress == d->bar->value())

667

return;

668

669

d->bar->setValue(progress);

if (d->shown_once) {

if (isModal())

QApplication::processEvents();

674

} else {

675

if ((!d->setValue_called && progress == 0 /* for compat with Qt < 5.4 */) || progress == minimum()) {

676

d->starttime.start();

677

d->forceTimer->start(d->showTime);

678

d->setValue_called = true;

679

return;

680

} else {

681

d->setValue_called = true;

682

bool need_show;

683

int elapsed = d->starttime.elapsed();

684

if (elapsed >= d->showTime) {

685

need_show = true;

686

} else {

687

if (elapsed > minWaitTime) {

688

int estimate;

689

int totalSteps = maximum() - minimum();

690

int myprogress = progress - minimum();

691

if (myprogress == 0) myprogress = 1;

692

if ((totalSteps - myprogress) >= INT_MAX / elapsed)

693

estimate = (totalSteps - myprogress) / myprogress * elapsed;

694

else

695

estimate = elapsed * (totalSteps - myprogress) / myprogress;

696

need_show = estimate >= d->showTime;

} else {

need_show = false;

}

}

if (need_show) {

d->ensureSizeIsAtLeastSizeHint();

703

show();

704

d->shown_once = true;

}

}

}

if (progress == d->bar->maximum() && d->autoReset)

reset();

}

/*!

Returns a size that fits the contents of the progress dialog.

715

The progress dialog resizes itself as required, so you should not

716

need to call this yourself.

717

718

719

QSize QProgressDialog::sizeHint() const

720

{

721

Q_D(const QProgressDialog);

722

QSize sh = d->label ? d->label->sizeHint() : QSize(0, 0);

723

QSize bh = d->bar->sizeHint();

724

int margin = style()->pixelMetric(QStyle::PM_DefaultTopLevelMargin);

725

int spacing = style()->pixelMetric(QStyle::PM_DefaultLayoutSpacing);

726

int h = margin * 2 + bh.height() + sh.height() + spacing;

727

if (d->cancel)

728

h += d->cancel->sizeHint().height() + spacing;

729

return QSize(qMax(200, sh.width() + 2 * margin), h);

}

/*!\reimp

void QProgressDialog::resizeEvent(QResizeEvent *)

735

{

736

Q_D(QProgressDialog);

d->layout();

}

/*!

\reimp

void QProgressDialog::changeEvent(QEvent *ev)

744

{

745

Q_D(QProgressDialog);

746

if (ev->type() == QEvent::StyleChange) {

747

d->layout();

748

} else if (ev->type() == QEvent::LanguageChange) {

749

d->retranslateStrings();

750

}

751

QDialog::changeEvent(ev);

}

/*!

\property QProgressDialog::minimumDuration

756

\brief the time that must pass before the dialog appears

757

758

If the expected duration of the task is less than the

759

minimumDuration, the dialog will not appear at all. This prevents

760

the dialog popping up for tasks that are quickly over. For tasks

761

that are expected to exceed the minimumDuration, the dialog will

762

pop up after the minimumDuration time or as soon as any progress

763

is set.

764

765

If set to 0, the dialog is always shown as soon as any progress is

766

set. The default is 4000 milliseconds.

767

768

void QProgressDialog::setMinimumDuration(int ms)

769

{

770

Q_D(QProgressDialog);

771

d->showTime = ms;

772

if (d->bar->value() == d->bar->minimum()) {

773

d->forceTimer->stop();

774

d->forceTimer->start(ms);

}

}

int QProgressDialog::minimumDuration() const

779

{

780

Q_D(const QProgressDialog);

return d->showTime;

}

/*!

\reimp

void QProgressDialog::closeEvent(QCloseEvent *e)

790

{

791

emit canceled();

792

QDialog::closeEvent(e);

}

/*!

\property QProgressDialog::autoReset

797

\brief whether the progress dialog calls reset() as soon as value() equals maximum()

The default is true.

\sa setAutoClose()

void QProgressDialog::setAutoReset(bool b)

805

{

806

Q_D(QProgressDialog);

d->autoReset = b;

}

bool QProgressDialog::autoReset() const

811

{

812

Q_D(const QProgressDialog);

return d->autoReset;

}

/*!

\property QProgressDialog::autoClose

818

\brief whether the dialog gets hidden by reset()

The default is true.

\sa setAutoReset()

void QProgressDialog::setAutoClose(bool close)

826

{

827

Q_D(QProgressDialog);

828

d->autoClose = close;

829

}

830

831

bool QProgressDialog::autoClose() const

832

{

833

Q_D(const QProgressDialog);

return d->autoClose;

}

/*!

\reimp

void QProgressDialog::showEvent(QShowEvent *e)

842

{

843

Q_D(QProgressDialog);

844

QDialog::showEvent(e);

845

d->ensureSizeIsAtLeastSizeHint();

846

d->forceTimer->stop();

}

/*!

Shows the dialog if it is still hidden after the algorithm has been started

851

and minimumDuration milliseconds have passed.

852

853

\sa setMinimumDuration()

854

855

856

void QProgressDialog::forceShow()

857

{

858

Q_D(QProgressDialog);

859

d->forceTimer->stop();

860

if (d->shown_once || d->cancellation_flag)

return;

show();

d->shown_once = true;

}

/*!

\since 4.5

\overload

Opens the dialog and connects its canceled() signal to the slot specified

872

by \a receiver and \a member.

873

874

The signal will be disconnected from the slot when the dialog is closed.

875

876

void QProgressDialog::open(QObject *receiver, const char *member)

877

{

878

Q_D(QProgressDialog);

879

connect(this, SIGNAL(canceled()), receiver, member);

880

d->receiverToDisconnectOnClose = receiver;

881

d->memberToDisconnectOnClose = member;

QDialog::open();

}

QT_END_NAMESPACE

#include "moc_qprogressdialog.cpp"

888

889

#endif // QT_NO_PROGRESSDIALOG

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