ModelView::DefaultCellDecorator Class Reference

Generates default cell decorations for Qt trees and tables. More...

Inheritance diagram for ModelView::DefaultCellDecorator:

Collaboration diagram for ModelView::DefaultCellDecorator:

Public Member Functions
bool	hasCustomDecoration (const QModelIndex &index) const override
void	initStyleOption (QStyleOptionViewItem *option, const QModelIndex &index) override

Protected Member Functions
virtual std::optional< std::string >	cellText (const QModelIndex &index) const

Detailed Description

Generates default cell decorations for Qt trees and tables.

Definition at line 25 of file defaultcelldecorator.h.

Member Function Documentation

cellText()

std::optional< std::string > DefaultCellDecorator::cellText ( const QModelIndex &  index ) const

protectedvirtual

Definition at line 31 of file defaultcelldecorator.cpp.

{
    auto variant = index.data();
 
    if (Utils::IsComboVariant(variant))
        return std::optional<std::string>{variant.value<ComboProperty>().label()};
 
    else if (Utils::IsBoolVariant(variant))
        return variant.value<bool>() ? std::optional<std::string>{"True"}
                                     : std::optional<std::string>{"False"};
 
    else if (Utils::IsExtPropertyVariant(variant))
        return std::optional<std::string>{variant.value<ExternalProperty>().text()};
 
    else if (Utils::IsColorVariant(variant))
        return std::optional<std::string>{std::string()};
 
    else if (Utils::IsDoubleVariant(variant))
        return std::optional<std::string>{
            ScientificSpinBox::toString(index.data(Qt::EditRole).value<double>(),
                                        Constants::default_double_decimals)
                .toStdString()};
 
    return {};
}

References ModelView::Constants::default_double_decimals, ModelView::Utils::IsBoolVariant(), ModelView::Utils::IsColorVariant(), ModelView::Utils::IsComboVariant(), ModelView::Utils::IsDoubleVariant(), ModelView::Utils::IsExtPropertyVariant(), ModelView::ScientificSpinBox::toString(), and ModelView::ComboProperty::value().

Referenced by hasCustomDecoration(), and initStyleOption().

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hasCustomDecoration()

bool DefaultCellDecorator::hasCustomDecoration ( const QModelIndex &  index ) const

overridevirtual

Implements ModelView::CellDecoratorInterface.

Definition at line 26 of file defaultcelldecorator.cpp.

{
    return cellText(index).has_value();
}

References cellText().

Referenced by initStyleOption().

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initStyleOption()

void DefaultCellDecorator::initStyleOption ( QStyleOptionViewItem *  option, const QModelIndex &  index  )

overridevirtual

Implements ModelView::CellDecoratorInterface.

Definition at line 57 of file defaultcelldecorator.cpp.

{
    if (!hasCustomDecoration(index))
        return;
 
    auto value = cellText(index).value();
    option->text = QString::fromStdString(value);
    if (value.empty())
        option->features &= ~QStyleOptionViewItem::HasDisplay;
}

References cellText(), and hasCustomDecoration().

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

• /home/www/ba/mvvm/viewmodel/mvvm/viewmodel/defaultcelldecorator.h
• /home/www/ba/mvvm/viewmodel/mvvm/viewmodel/defaultcelldecorator.cpp