qskinny/examples/automotive/ButtonBar.cpp

/******************************************************************************
 * QSkinny - Copyright (C) 2016 Uwe Rathmann
 * This file may be used under the terms of the 3-clause BSD License
 *****************************************************************************/

#include "ButtonBar.h"
#include "SkinFactory.h"

#include <QskGraphic.h>
#include <QskGraphicIO.h>
#include <QskGraphicLabel.h>
#include <QskMargins.h>

QSK_SUBCONTROL( ButtonBar, Indicator )

class IndicatorLabel final : public QskGraphicLabel
{
  public:
    IndicatorLabel( QQuickItem* parentItem = nullptr )
        : QskGraphicLabel( parentItem )
    {
        // so the skins are able to colorize them
        setGraphicRole( SkinFactory::Indicator );
    }

    QskAspect::Subcontrol effectiveSubcontrol(
        QskAspect::Subcontrol subControl ) const override
    {
        // so that we can set specific colors in the skin

        if ( subControl == QskGraphicLabel::Graphic )
            return ButtonBar::Indicator;

        return subControl;
    }
};

ButtonBar::ButtonBar( QQuickItem* parentItem )
    : QskLinearBox( parentItem )
{
    QColor c( Qt::black );
    c.setAlphaF( 0.5 );
    setBackgroundColor( c );

    setMargins( QskMargins( 20, 15 ) );
    setSpacing( 20 );

    setSizePolicy( QskSizePolicy::MinimumExpanding, QskSizePolicy::MinimumExpanding );
}

void ButtonBar::addIndicator( const char* name )
{
    auto label = new IndicatorLabel( this );

    /*
        The label should adjust vertically and be stretched horizontally
        according to its aspect ratio.
     */

    label->setSizePolicy( QskSizePolicy::Constrained, QskSizePolicy::Ignored );

    const QString fileName = QString( ":/qvg/%1.qvg" ).arg( name );
    label->setGraphic( QskGraphicIO::read( fileName ) );
}

QSizeF ButtonBar::layoutSizeHint(
    Qt::SizeHint which, const QSizeF& ) const
{
    if ( which == Qt::PreferredSize )
        return QSizeF( -1, 20 );

    return QSizeF();
}