QPushbutton movable Dynamically

[Apeksha]

@Wieland

ui->contentWidget->setStyleSheet("QWidget {background-color:#C0C0C0;}");
ui->contentWidget->setMinimumSize( 820, 150 );
QHBoxLayout *ConfigurationLayout = new QHBoxLayout;
QScrollArea *scrollArea = new QScrollArea;
// scrollArea->setStyleSheet("QScrollArea {background-color:#C0C0C0;}");
scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
scrollArea->setWidget(ui->contentWidget);
scrollArea->setWidgetResizable(true);
ConfigurationLayout->addWidget(scrollArea);
mainBoxLayout->addLayout(ConfigurationLayout);

This is my part of code where button movable is required, I had widget and scrollArea and some buttons.
So when my app is minimized, one of the button position should change, when gui is minized it have to display on top of widget. I hope you got my requirement.

[Apeksha]

@mrjj

Yes, it always say false?

[mrjj]

@Apeksha

ok didnt check it lately , i assume its because the NewSize from event has not yep been applied.

I think i get your use case now
the button show sort of go to next col if there is no room to be below.
So its not on top of the other but on top in new col?
like this

[Apeksha]

@mrjj

So what to do now? what is the solution?

[mrjj]

@Apeksha
you can use
const QSize &QResizeEvent::oldSize() const
const QSize &QResizeEvent::size() const
to check what size window has and had.

Based on those numbers , you can do the right thing, store button pos
or to restore the button to old pos.

you can use qDebug() << "size" << event.oldSize() << " to " << event.Size();

to get an idea of what numbers you will see.

You can use
http://doc.qt.io/qt-5/qdesktopwidget.html#availableGeometry

to get how big screen is.

[Apeksha]

@mrjj

I understood saving of old position and new position, but how to restore i.e hoe to set button old position to restore?

[jsulm]

@Apeksha Like this maybe?

ui->pushButton->move(oldX, oldY);

[Apeksha]

@jsulm

I have used the same, but it's not working.

void MainWindow::resizeEvent(QResizeEvent* event)
{
qDebug() << "old size" << event->oldSize() << " to " << event->size();
int oldx,oldy;
oldpos=ui->pushButton->geometry();
oldx=oldpos.x();
oldy=oldpos.y();
qDebug()<<"oldpos x is"<<oldx<<"oldpos y is:"<<oldy;
if (!firstTime) {
ui->pushButton->move(50,100);
}

    else {
         ui->pushButton->move(oldx,oldy);
           firstTime = false;

    }

    QMainWindow::resizeEvent(event);

}

[jsulm]

@Apeksha "it's not working" doesn't help to solve the problem.
Did you analyse why it is not working? You can print out the values oldX, oldY for example.

[Apeksha]

@jsulm

void MainWindow::resizeEvent(QResizeEvent* event)
{
qDebug() << "old size" << event->oldSize() << " to " << event->size();
int oldx,oldy;
oldpos=ui->pushButton->geometry();
oldx=oldpos.x();
oldy=oldpos.y();
qDebug()<<"oldpos x is"<<oldx<<"oldpos y is:"<<oldy;
if (!firstTime) {
ui->pushButton->move(50,100);
}

else {
     ui->pushButton->move(oldx,oldy);
       firstTime = false;

}

QMainWindow::resizeEvent(event);

}

[Apeksha]

Hi,

please can anybody help me to solve this issue?

Thanks in advance.

[jsulm]

@Apeksha Your current resizeEvent is wrong: you read CURRENT button geometry and use it as OLD geometry! You need to store the old posx/posy before and restore it later when needed.

[Apeksha]

@jsulm

K i uderstood , Initially I will save oldx and oldy in constructor and where actually i have to use this oldx and oldy to restore. In above code If I use this oldx and oldy , its not restoring. I am attaching code:

void MainWindow::resizeEvent(QResizeEvent* event)
{
if (!firstTime) {
ui->pushButton->move(50,100);
}

    else {             
        ui->pushButton->move(oldx,oldy);  ---->This oldx and oldy Iam  storing in constructor.
           firstTime = false;
    }

    QMainWindow::resizeEvent(event);

}

[jsulm]

@Apeksha Did you verify the else block was executed? Did you check the oldx/oldy values?

[Apeksha]

@jsulm

Very first time it was executing, when I am resizing it was not executing.

[dsba]

@Apeksha

I think, Problem seems to be with enabling of flag "firsttime".

CAN YOU TRY THIS?

int oldX,oldY,fstFlag=1;

void MainWindow::resizeEvent(QResizeEvent *event)
{
if(!fstFlag)
{
oldX=0;
oldY=0;
fstFlag=1;
}
else
{
fstFlag=0;
oldX=50;
oldY=100;
}
ui->pushbutton->move(oldX,oldY);
}

[Apeksha]

@dsba

Thanks a lot.
Its fine, but when I am resizing my app slowly button is blinking.