QSizePolicy::Maximum on QScrollArea puts Scrollbar on top of containing Widget

[mrjj]

hi
this seems to align perfectly
ui->widget->setGeometry(0,0, ui->scrollArea->viewport()->width(), 200 );

Note the viewport thing.

[ModelTech]

Not in my case... I tried:

MyWidget->setGeometry(ScrollArea->x(),ScrollArea->y(), ScrollArea->viewport()->width(), ScrollArea->height());

All works fine except for the width. This makes it actually worse...

[mrjj]

@ModelTech said:

ScrollArea->x(),ScrollArea->y()

should that not be 0,0 ?

else it should be
MyWidget->setGeometry(ScrollArea->x(),ScrollArea->y(), ScrollArea->viewport()->width() - ScrollArea->x(), ScrollArea-height());

since you offset widget into the viewport. ( if not 0)
so the WIDTH should be adjusted as if widget x is not zero

[ModelTech]

Unfortunately, that does not help either. Also using 0,0 as x and Y does not change the result. The result is the same as in my previous answer: worse than without the setGeometry call.

[mrjj]

@ModelTech
ok that is strange
here it makes it fit perfect, with or without scrollbars

[ModelTech]

Not sure how to post pictures here, but this is the effect without the setGeometry call:

http://i513.photobucket.com/albums/t333/bmc-parts/modeltech/Without_zpsosb3dxgy.png

and this is the effect with the setGeometry call:

http://i513.photobucket.com/albums/t333/bmc-parts/modeltech/With_zpscpluqazz.png

[mrjj]

@ModelTech
well u cant post images so what u did was the right way.

The area above the profile button with the lineedits?

im not sure what MyWidget refers to, when looking at the images.

[ModelTech]

MyWidget is the content of the ScrollArea under 'Profiles'/'Time'/'Weight'. The Widget is built up as a QGridLayout where the first two columns are QLineEdit's and the last column is a QToolButton (this last column is partly invisible due to the scrollbar being drawn over it. The QLineEdits have a fixed width of 80, so have the 'Time' and 'Weight' QLabels.

[mrjj]

@ModelTech
ok, i see.
must be something to do with layout.
I didnt apply one as i was just scaling widget to fit.

so mywidget is the scrollAreaWidgetContents ?

[ModelTech]

I guess it's maybe easier to give the concrete code, which is part of the constructor for basically the whole widget below the horizontal line.

    QLabel *Label = new QLabel(tr("Profiles"));

    QLabel *TimeLabel = new QLabel(tr("Time"));
    TimeLabel->setFixedWidth(80);
    QLabel *WeightLabel = new QLabel(tr("Weight"));
    WeightLabel->setFixedWidth(80);

    QHBoxLayout *Heading = new QHBoxLayout;
    Heading->setSpacing(2);
    Heading->addWidget(TimeLabel);
    Heading->addWidget(WeightLabel);
    Heading->addStretch();

    QWidget *Profiles = new QWidget;
    QGridLayout *ProfilesGrid = new QGridLayout;
    ProfilesGrid->setSpacing(2);
    ProfilesGrid->setContentsMargins(0, 0, 0, 0);
    for (int i = 0; i != Specification->numberOfProfiles(); i++) {
        QLineEdit *TimeEditor = new QLineEdit(QString("%1").arg(Specification->profile(i)->time()));
        TimeEditor->setFixedWidth(80);
        ProfilesGrid->addWidget(TimeEditor, i, 0);
        QLineEdit *WeightEditor = new QLineEdit(QString("%1").arg(Specification->profile(i)->weight()));
        WeightEditor->setFixedWidth(80);
        ProfilesGrid->addWidget(WeightEditor, i, 1);
        QToolButton *DeleteButton = new QToolButton;
        DeleteButton->setIcon(QIcon(":/icons/delete.png"));
        ProfilesGrid->addWidget(DeleteButton, i, 2);
    }
    Profiles->setLayout(ProfilesGrid);

    QScrollArea *ScrollArea = new QScrollArea;
    ScrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    ScrollArea->setWidget(Profiles);
    ScrollArea->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Preferred);
    ScrollArea->verticalScrollBar()->setSingleStep(Profiles->height() / Specification->numberOfProfiles());
//    Profiles->setGeometry(0,0, ScrollArea->viewport()->width(), ScrollArea->height());

    QPushButton *Button = new QPushButton(tr("Add Profile"));
    Button->setFixedWidth(80);

    QVBoxLayout *Layout = new QVBoxLayout;
    Layout->addWidget(Label);
    Layout->addLayout(Heading);
    Layout->addWidget(ScrollArea);
    Layout->addWidget(Button);
    setLayout(Layout);