#include "graphicsview.h"

#include <QGraphicsLinearLayout>
#include <QGraphicsPixmapItem>
#include <QGraphicsProxyWidget>
#include <QGraphicsScene>
#include <QGraphicsWidget>
#include <QPushButton>
#include <QStyleOptionGraphicsItem>

class ColoredBoxItem : public QGraphicsWidget {
public:
    ColoredBoxItem( QColor color ) : m_color( color ) {
        setMinimumSize( 50, 50 );
        setMaximumSize( 50, 50 );
    }
protected:
    void paint( QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget * ) {
        painter->fillRect( option->rect, m_color );
    }
private:
    QColor m_color;
};

GraphicsView::GraphicsView(QWidget *parent)
    : QGraphicsView(parent)
{
    QGraphicsScene* scene = new QGraphicsScene( this );
    setScene( scene );

    m_green = new ColoredBoxItem( Qt::green );

    QGraphicsLinearLayout* layout = new QGraphicsLinearLayout( Qt::Horizontal );
    layout->addStretch();
    layout->addItem( new ColoredBoxItem( Qt::red ) );
    layout->addItem( m_green );
    layout->addItem( new ColoredBoxItem( Qt::blue ) );
    layout->addStretch();

    m_pb = new QPushButton( "Hide" );
    connect( m_pb, SIGNAL( clicked() ), this, SLOT( clicked() ) );

    QGraphicsProxyWidget* proxy = new QGraphicsProxyWidget;
    proxy->setWidget( m_pb );
    layout->addItem( proxy );

    QGraphicsWidget* widget = new QGraphicsWidget;
    widget->setLayout( layout );

    scene->addItem( widget );
}

void GraphicsView::clicked()
{
    if( m_green->isVisible() ) {
        m_pb->setText( "Show" );
        m_green->hide();
    } else {
        m_pb->setText( "Hide" );
        m_green->show();
    }
}

GraphicsView::~GraphicsView()
{

}