void tst_QAbstractScrollArea::setScrollBars2()
{
QAbstractScrollArea scrollArea;
scrollArea.resize(300, 300);
QScrollBar *hbar = new QScrollBar;
scrollArea.setHorizontalScrollBar(hbar);
qApp->processEvents();
QCOMPARE(scrollArea.horizontalScrollBar(), hbar);
QScrollBar *vbar = new QScrollBar;
scrollArea.setVerticalScrollBar(vbar);
qApp->processEvents();
QCOMPARE(scrollArea.verticalScrollBar(), vbar);
scrollArea.horizontalScrollBar()->setRange(0, 100);
scrollArea.verticalScrollBar()->setRange(0, 100);
scrollArea.show();
// Make sure scroll bars are not explicitly hidden by QAbstractScrollArea itself.
QVERIFY(hbar->isVisible());
QVERIFY(vbar->isVisible());
// Hide the OLD scroll bar and ensure that the NEW one is hidden.
hbar->hide();
scrollArea.setHorizontalScrollBar(new QScrollBar);
qApp->processEvents();
QVERIFY(!scrollArea.horizontalScrollBar()->isVisible());
vbar->hide();
scrollArea.setVerticalScrollBar(new QScrollBar);
qApp->processEvents();
QVERIFY(!scrollArea.verticalScrollBar()->isVisible());
scrollArea.verticalScrollBar()->show();
scrollArea.horizontalScrollBar()->show();
// Hide the NEW scroll bar and ensure that it's visible
// (because the OLD one is visible).
hbar = new QScrollBar;
hbar->hide();
scrollArea.setHorizontalScrollBar(hbar);
qApp->processEvents();
QVERIFY(hbar->isVisible());
vbar = new QScrollBar;
vbar->hide();
scrollArea.setVerticalScrollBar(vbar);
qApp->processEvents();
QVERIFY(vbar->isVisible());
vbar->setRange(0, 0);
qApp->processEvents();
QVERIFY(!vbar->isVisible());
hbar->setRange(0, 0);
qApp->processEvents();
QVERIFY(!hbar->isVisible());
}
QScrollBar *ZLQtViewWidget::addScrollBar(QGridLayout *layout, Qt::Orientation orientation, int x, int y) {
QScrollBar *scrollBar = new MyQScrollBar(orientation, myFrame);
layout->addWidget(scrollBar, x, y);
scrollBar->hide();
if (orientation == Qt::Vertical) {
connect(scrollBar, SIGNAL(sliderMoved(int)), this, SLOT(onVerticalSliderMoved(int)));
connect(scrollBar, SIGNAL(actionTriggered(int)), this, SLOT(onVerticalSliderClicked(int)));
} else {
QScrollBar *ZLQtViewWidget::addScrollBar(QGridLayout *layout, Qt::Orientation orientation, int x, int y) {
QScrollBar *scrollBar = new QScrollBar(orientation, myFrame);
layout->addWidget(scrollBar, x, y);
scrollBar->hide();
if (orientation == Qt::Vertical) {
connect(scrollBar, SIGNAL(sliderMoved(int)), this, SLOT(onVerticalSliderMoved(int)));
connect(scrollBar, SIGNAL(nextLine()), this, SLOT(onVerticalSliderStepNext()));
connect(scrollBar, SIGNAL(nextPage()), this, SLOT(onVerticalSliderPageNext()));
connect(scrollBar, SIGNAL(prevLine()), this, SLOT(onVerticalSliderStepPrevious()));
connect(scrollBar, SIGNAL(prevPage()), this, SLOT(onVerticalSliderPagePrevious()));
} else {
void MainWindow::updateScrollBar( bool blockSignals )
{
QScrollBar* sb = ui->horizontalScrollBar;
if ( PlotsArea==NULL || !PlotsArea->isZoomed() )
{
sb->hide();
}
else
{
const FrameInterval intv = PlotsArea->visibleFrames();
sb->blockSignals( blockSignals );
sb->setRange( 0, PlotsArea->numFrames() - intv.count() + 1 );
sb->setValue( intv.from );
sb->setPageStep( intv.count() );
sb->setSingleStep( intv.count() );
sb->blockSignals( false );
sb->show();
}
}
