Layout of item in QListWidget

[Dragoon]

I'm a newbie in Qt and I need to create a list of combined widgets to manage a drone pre-flight checklist.
I decided to use the QListWidget. I defined the widgets compound (testwidget.cpp) trough QT Designer in this way:

I needed to customize the constructor of the compound in this way:

TestWidget::TestWidget(QTest *test, QWidget *parent)
    : TestWidget(parent)
{
    mTest = test;

    ui->lblName->setText(test->label());
    ui->lblDescription->setText(test->description());
}

Then I placed a QListWidget item in my main form and tried to populate it with some items trough this code:

void MainWindow::initUI() {
  setPageControls(ui->droneStack->currentIndex());

  // Initalize checklist
  initCheckList();
}

void MainWindow::initCheckList() {
    addTest("Test motor 1", "Execute motor1 test", ui->droneTestList);
    addTest("Test motor 2", "Execute motor2 test", ui->droneTestList);
    addTest("Test motor 3", "Execute motor3 test", ui->droneTestList);
    addTest("Test motor 4", "Execute motor4 test", ui->droneTestList);
}

void MainWindow::addTest(QString name, QString description, QListWidget* list) {
    QListWidgetItem *_item = new QListWidgetItem(list);

    list->addItem(_item);

    QTest* _test = new QTest(name, description);

    TestWidget *_widget= new TestWidget(_test);

    _item->setSizeHint(_widget->sizeHint());

    list->setItemWidget(_item, _widget);
}

When I run the app this's the result:

It looks like the list item is not vertically adjusted to fit the content.
How can I fix it? I thought this line of code should do the magic (as suggested in some sample code):

_item->setSizeHint(_widget->sizeHint());

But it doesn't seem to have any effect.

[SGaist]

Hi,

Why are you using a QListWidget since you don't even make use of the model view part of it ?

A QScrollArea would suffice for this task.

[jsulm]

@Dragoon said in Layout of item in QListWidget:

Then I placed a QListWidget item in my main form

How? In the designer? Is it in a layout?

[Dragoon]

@jsulm yes the QListWidget is placed in the tab of a QTabWidget and the layout of the page is set as a vertical layout.

<widget class="QWidget" name="uav1checkList">
    <property name="font">
        <font>
               <pointsize>11</pointsize>
               <bold>false</bold>
          </font>
     </property>
     <attribute name="title">
          <string>Check List</string>
      </attribute>
      <layout class="QVBoxLayout" name="verticalLayout_9">
          <item>
               <widget class="QListWidget" name="uav1TestList"/>
          </item>
       </layout>
</widget>

[jsulm]

@Dragoon said in Layout of item in QListWidget:

the QListWidget is placed in the tab of a QTabWidget

and is uav1checkList also in a layout? Does it resize when you're resizing the tab?

[Dragoon]

@jsulm uav1checkList is just one of the page of the container QTabWidget (that's part of a more complex hierarchy).
At run time it seems that all the widgets are resized correctly.

<item>
    <widget class="QTabWidget" name="uav1Stack">
        <property name="font"> ... </property>
        <property name="styleSheet">... </property> 
        <property name="tabPosition">... </property> 
        <property name="currentIndex">... </property> 
        <property name="iconSize">... </property> 
        <widget class="QWidget" name="uav1home">
        <widget class="QWidget" name="uav1checkList">
        <widget class="QWidget" name="uav1manualControl">
        <widget class="QWidget" name="uav1video">
    </widget>
</item>

[jsulm]

This post is deleted!

[SGaist]

Hi,

Why are you using a QListWidget since you don't even make use of the model view part of it ?

A QScrollArea would suffice for this task.

[Dragoon]

@SGaist because I cannot find QScrollArea examples while I found many QListWidget ones.

uhm ... it doesn't seem to look the way I meant...:

void MainWindow::addTestItem(QString name, QString description,
                             QScrollArea *list) {
  QTest *_test = new QTest(name, description);

  TestWidget *_widget = new TestWidget(_test);

  list->setWidget(_widget);
}

[jsulm]

@Dragoon said in Layout of item in QListWidget:

because I cannot find QScrollArea examples

https://doc.qt.io/qt-6/qtwidgets-widgets-imageviewer-example.html

[Dragoon]

@jsulm uhm... it doesn't seems to make what I need... this example is an appplication that loads one image inside the window and will manage scrolling bars if needed.
If you load a second image it just replace the first one, or at least that's what it seems to happen from the user point of view...
I haven't digged much on that code since it seems to lack the basic requirement I need.
I need to add several different istances of the same compound of widgets (TestWidget) to a TabWidget page.
I don't doubt that QScrollArea can do it but I'm guessing how much effort it needs in comparision of QListWidget?

[Dragoon]

@SGaist I found a possibile solution using QScrollArea.. I needed to add a VerticalLayout into ScrollAreaContentWidget and then add the compound widget to such layout:

void MainWindow::addTestItem(QString name, QString description,
                            QVBoxLayout *layout) {
 QTest *_test = new QTest(name, description);

 TestWidget *_widget = new TestWidget(_test);

 layout->addWidget(_widget);
}

Now it seems to display correctly: