QListWidget's strings get truncated in dialog

[alxobr]

Hi all,

Though I have tried many things, I always get a tiny dialog with strings truncated. I can't figure out what happens. I have much more complex layouts and QListWidget's in the main window where it all works like a breeze.

Could someone tell me what I*overlooked ?

DiskList::DiskList( QWidget *parent, const char *name)
  : QListWidget(parent)
{
  setObjectName(name);
  setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  int nb_entries=read_entries() ;
  setSelectionMode(QAbstractItemView::ExtendedSelection);
  setResizeMode(QListView::Adjust);
      for (int i = 0; i< nb_entries; i++)
	addItem(new QListWidgetItem(QString(entries[i]->mntpnt) + tr(" (removable drive)")));
}
 
GetUpdateList::GetUpdateList( QWidget *parent)
  : QDialog( parent)
{
  QVBoxLayout * whole = new QVBoxLayout;
  whole->setObjectName("whole");
  whole->setMargin(DIALOG_MARGIN);
  whole->addWidget( disklist= new DiskList( this, "disklist"), 0, 0);
  whole->addSpacing(DIALOG_SPACING);
  QHBoxLayout *buttons = new QHBoxLayout();
  update = new QPushButton( tr("&Update"), this );
  connect( update, SIGNAL(clicked()),  SLOT(updatedb()) );
  buttons->addWidget(update, 0, 0);
  done = new QPushButton( tr("&Done"), this );
  connect( done, SIGNAL(clicked()), SLOT(accept()) );
  buttons->addWidget(done, 0, 0);
  whole->addLayout(buttons);
  setLayout(whole);
}

DiskList::DiskList( QWidget *parent, const char *name)
  : QListWidget(parent)
{
  setObjectName(name);
  setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  int nb_entries=read_entries() ;
  setSelectionMode(QAbstractItemView::ExtendedSelection);
  setResizeMode(QListView::Adjust);
      for (int i = 0; i< nb_entries; i++)
	addItem(new QListWidgetItem(QString(entries[i]->mntpnt) + tr(" (removable drive)")));
}

GetUpdateList::GetUpdateList( QWidget *parent)
  : QDialog( parent)
{
  QVBoxLayout * whole = new QVBoxLayout;
  whole->setObjectName("whole");
  whole->setMargin(DIALOG_MARGIN);
  whole->addWidget( disklist= new DiskList( this, "disklist"), 0, 0);
  whole->addSpacing(DIALOG_SPACING);
  QHBoxLayout *buttons = new QHBoxLayout();
  update = new QPushButton( tr("&Update"), this );
  connect( update, SIGNAL(clicked()),  SLOT(updatedb()) );
  buttons->addWidget(update, 0, 0);
  done = new QPushButton( tr("&Done"), this );
  connect( done, SIGNAL(clicked()), SLOT(accept()) );
  buttons->addWidget(done, 0, 0);
  whole->addLayout(buttons);
  setLayout(whole);
}

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Cheers,

Alexandre

-- added after 15*minutes
Hi again,

Even such instructions like:

setMinimumWidth(contentsRect().width() * 2 );[/QTCLASS]
 
do not solve the issue. Actually even the dialog's caption is truncated...
 
Alexandre
 
[hr]Added after 22 minutes:[/hr]
 
I found an ugly workaround:
[QTCLASS]void DiskList::showEvent ( QShowEvent * ) 
{
  setMinimumWidth(2 * contentsRect().width() + 2 * frameWidth());
}

setMinimumWidth(contentsRect().width() * 2 );[/QTCLASS]

do not solve the issue. Actually even the dialog's caption is truncated...

Alexandre

[hr]Added after 22 minutes:[/hr]

I found an ugly workaround:
[QTCLASS]void DiskList::showEvent ( QShowEvent * ) 
{
  setMinimumWidth(2 * contentsRect().width() + 2 * frameWidth());
}

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Maybe I*should rather use the width of the QListWidgetItems. However I can't believe this has to be so far fetched to get such a straightforward behavior.

Alexandre

[ChrisW67]

The code below (which is essentially yours) produces a reasonable default size of dialog (Linux). Is yours substantially different? In any case, you can add a call to QWidget::resize() at the end of the constructor to dictate a larger starting size for the dialog.

#include <QtGui>
#include <QDebug>
 
const int DIALOG_MARGIN = 10;
const int DIALOG_SPACING = 10;
 
class DiskList: public QListWidget {
    Q_OBJECT
public:
    DiskList( QWidget *parent, const char *name) : QListWidget(parent) {
        setObjectName(name);
        setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
        int nb_entries = 10;
        setSelectionMode(QAbstractItemView::ExtendedSelection);
        setResizeMode(QListView::Adjust);
        for (int i = 0; i< nb_entries; i++)
            addItem(new QListWidgetItem(QString("Entry %1").arg(i) + tr(" (removable drive)")));
    }
};
 
class GetUpdateList: public QDialog  {
    Q_OBJECT
    DiskList *disklist;
    QPushButton *update;
    QPushButton *done;
public:
    GetUpdateList( QWidget *parent = 0) : QDialog( parent) {
        QVBoxLayout * whole = new QVBoxLayout;
        whole->setObjectName("whole");
        whole->setMargin(DIALOG_MARGIN);
        whole->addWidget( disklist= new DiskList( this, "disklist"), 0, 0);
        whole->addSpacing(DIALOG_SPACING);
        QHBoxLayout *buttons = new QHBoxLayout();
        update = new QPushButton( tr("&Update"), this );
        connect( update, SIGNAL(clicked()), SLOT(updatedb()) );
        buttons->addWidget(update, 0, 0);
        done = new QPushButton( tr("&Done"), this );
        connect( done, SIGNAL(clicked()), SLOT(accept()) );
        buttons->addWidget(done, 0, 0);
        whole->addLayout(buttons);
        setLayout(whole);
 
        // Want to force a particular starting size?
        // resize(800, 600);
    }
};
 
 
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
 
    GetUpdateList gul;
    gul.show();
    return app.exec();
}
#include "main.moc"

#include <QtGui>
#include <QDebug>

const int DIALOG_MARGIN = 10;
const int DIALOG_SPACING = 10;

class DiskList: public QListWidget {
    Q_OBJECT
public:
    DiskList( QWidget *parent, const char *name) : QListWidget(parent) {
        setObjectName(name);
        setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
        int nb_entries = 10;
        setSelectionMode(QAbstractItemView::ExtendedSelection);
        setResizeMode(QListView::Adjust);
        for (int i = 0; i< nb_entries; i++)
            addItem(new QListWidgetItem(QString("Entry %1").arg(i) + tr(" (removable drive)")));
    }
};

class GetUpdateList: public QDialog  {
    Q_OBJECT
    DiskList *disklist;
    QPushButton *update;
    QPushButton *done;
public:
    GetUpdateList( QWidget *parent = 0) : QDialog( parent) {
        QVBoxLayout * whole = new QVBoxLayout;
        whole->setObjectName("whole");
        whole->setMargin(DIALOG_MARGIN);
        whole->addWidget( disklist= new DiskList( this, "disklist"), 0, 0);
        whole->addSpacing(DIALOG_SPACING);
        QHBoxLayout *buttons = new QHBoxLayout();
        update = new QPushButton( tr("&Update"), this );
        connect( update, SIGNAL(clicked()), SLOT(updatedb()) );
        buttons->addWidget(update, 0, 0);
        done = new QPushButton( tr("&Done"), this );
        connect( done, SIGNAL(clicked()), SLOT(accept()) );
        buttons->addWidget(done, 0, 0);
        whole->addLayout(buttons);
        setLayout(whole);

        // Want to force a particular starting size?
        // resize(800, 600);
    }
};


int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    GetUpdateList gul;
    gul.show();
    return app.exec();
}
#include "main.moc"

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dialog.png

[alxobr]

Hi all,

The code below (which is essentially yours) produces a reasonable default size of dialog (Linux). Is yours substantially different?

Thanks a lot Chris for you help.

Hopefully I went back to the site! Having selected Subscription "Instantly, using email", I thought I'd be warned by email, and I wasn't.

I do have a substantially smaller dialog if I remove the showEvent workaround (I began to use showEvent some time ago because resize in the constructor sometimes did not work as I expected, if I remember well).

Now you can see the difference on the attached screenshot.
The code you kindly sent works fine:
addItem(new QListWidgetItem(QString("Entry %1").arg(i) + tr(" (very nice removable drive)")));
and begins to truncate the strings only when they get very large:
addItem(new QListWidgetItem(QString("Entry %1").arg(i) + tr(" (very nice removable drive which should be displayed in full)")));

My dialog already truncates much smaller strings. Parenting to 0 does not help...

Cheers,

Alexandre