FitParameterDelegate Class Reference

Description

The FitParameterDelegate class presents the content of SessionModel items in standard QTreeView. Extents base QItemDelegate with possibility to show/edit our custom QVariant's.

Definition at line 24 of file FitParameterDelegate.h.

Inheritance diagram for FitParameterDelegate:

Collaboration diagram for FitParameterDelegate:

Public Slots
void	onCustomEditorDataChanged (const QVariant &)
	Notifies everyone that the editor has completed editing the data. More...

Public Member Functions
	FitParameterDelegate (QObject *parent)
QWidget *	createEditor (QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override
void	paint (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override
void	setEditorData (QWidget *editor, const QModelIndex &index) const override
	Propagates the data change from the model to the editor (if it is still opened). More...
void	setModelData (QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override
	Propagates changed data from the editor to the model. More...
QSize	sizeHint (const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Increases height of the row by 20% wrt the default. More...
void	updateEditorGeometry (QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Makes an editor occupying whole available space in a cell. If cell contains an icon as a decoration (i.e. icon of material property), it will be hidden as soon as editor up and running. More...

Protected Member Functions
virtual QWidget *	createEditorFromIndex (const QModelIndex &index, QWidget *parent) const

Private Member Functions
void	paintCustomLabel (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index, const QString &text) const
	Paints custom text in a a place corresponding given index. More...

Constructor & Destructor Documentation

FitParameterDelegate()

FitParameterDelegate::FitParameterDelegate

(

QObject *

parent

)

Definition at line 22 of file FitParameterDelegate.cpp.

    : QStyledItemDelegate(parent)
{
}

Member Function Documentation

createEditor()

QWidget * FitParameterDelegate::createEditor ( QWidget *  parent, const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

override

Definition at line 37 of file FitParameterDelegate.cpp.

{
    auto* result = createEditorFromIndex(index, parent);
 
    if (auto* customEditor = dynamic_cast<CustomEditor*>(result)) {
        new TabFromFocusProxy(customEditor);
        connect(customEditor, &CustomEditor::dataChanged, this,
                &FitParameterDelegate::onCustomEditorDataChanged);
    }
 
    if (!result) // falling back to default behaviour
        result = QStyledItemDelegate::createEditor(parent, option, index);
 
    return result;
}

References createEditorFromIndex(), CustomEditor::dataChanged(), and onCustomEditorDataChanged().

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createEditorFromIndex()

QWidget * FitParameterDelegate::createEditorFromIndex ( const QModelIndex &  index, QWidget *  parent  ) const

protectedvirtual

Definition at line 103 of file FitParameterDelegate.cpp.

{
    if (index.internalPointer()) {
        auto* item = static_cast<SessionItem*>(index.internalPointer());
        return GUI::View::PropertyEditorFactory::CreateEditor(*item, parent);
    }
    return nullptr;
}

References GUI::View::PropertyEditorFactory::CreateEditor().

Referenced by createEditor().

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onCustomEditorDataChanged

void FitParameterDelegate::onCustomEditorDataChanged ( const QVariant &  )

slot

Notifies everyone that the editor has completed editing the data.

Definition at line 115 of file FitParameterDelegate.cpp.

{
    auto* editor = qobject_cast<CustomEditor*>(sender());
    ASSERT(editor);
    emit commitData(editor);
}

Referenced by createEditor().

paint()

void FitParameterDelegate::paint ( QPainter *  painter, const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

override

Definition at line 27 of file FitParameterDelegate.cpp.

{
    if (GUI::View::PropertyEditorFactory::hasStringRepresentation(index)) {
        QString text = GUI::View::PropertyEditorFactory::toString(index);
        paintCustomLabel(painter, option, index, text);
    } else
        QStyledItemDelegate::paint(painter, option, index);
}

References GUI::View::PropertyEditorFactory::hasStringRepresentation(), paintCustomLabel(), and GUI::View::PropertyEditorFactory::toString().

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paintCustomLabel()

void FitParameterDelegate::paintCustomLabel ( QPainter *  painter, const QStyleOptionViewItem &  option, const QModelIndex &  index, const QString &  text  ) const

private

Paints custom text in a a place corresponding given index.

Definition at line 124 of file FitParameterDelegate.cpp.

{
    QStyleOptionViewItem opt = option;
    initStyleOption(&opt, index); // calling original method to take into accounts colors etc
    opt.text = displayText(text, option.locale); // by overriding text with ours
    const QWidget* widget = opt.widget;
    QStyle* style = widget ? widget->style() : QApplication::style();
    style->drawControl(QStyle::CE_ItemViewItem, &opt, painter, widget);
}

Referenced by paint().

setEditorData()

void FitParameterDelegate::setEditorData ( QWidget *  editor, const QModelIndex &  index  ) const

override

Propagates the data change from the model to the editor (if it is still opened).

Definition at line 70 of file FitParameterDelegate.cpp.

{
    if (!index.isValid())
        return;
 
    if (auto* customEditor = dynamic_cast<CustomEditor*>(editor))
        customEditor->setData(index.data());
    else
        QStyledItemDelegate::setEditorData(editor, index);
}

setModelData()

void FitParameterDelegate::setModelData ( QWidget *  editor, QAbstractItemModel *  model, const QModelIndex &  index  ) const

override

Propagates changed data from the editor to the model.

Definition at line 56 of file FitParameterDelegate.cpp.

{
    if (!index.isValid())
        return;
 
    if (auto* customEditor = dynamic_cast<CustomEditor*>(editor))
        model->setData(index, customEditor->editorData());
    else
        QStyledItemDelegate::setModelData(editor, model, index);
}

sizeHint()

QSize FitParameterDelegate::sizeHint ( const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

override

Increases height of the row by 20% wrt the default.

Definition at line 83 of file FitParameterDelegate.cpp.

{
    QSize result = QStyledItemDelegate::sizeHint(option, index);
    result.setHeight(static_cast<int>(result.height() * 1.2));
    return result;
}

updateEditorGeometry()

void FitParameterDelegate::updateEditorGeometry ( QWidget *  editor, const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

override

Makes an editor occupying whole available space in a cell. If cell contains an icon as a decoration (i.e. icon of material property), it will be hidden as soon as editor up and running.

Definition at line 95 of file FitParameterDelegate.cpp.

{
    QStyledItemDelegate::updateEditorGeometry(editor, option, index);
    editor->setGeometry(option.rect);
}

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The documentation for this class was generated from the following files:

• /home/build/builds/o5h8MZZm/0/mlz/bornagain/GUI/View/Fit/FitParameterDelegate.h
• /home/build/builds/o5h8MZZm/0/mlz/bornagain/GUI/View/Fit/FitParameterDelegate.cpp