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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
#ifndef SCLISTBOXPIXMAP_H
#define SCLISTBOXPIXMAP_H
#include <memory>
#include <QApplication>
#include <QDebug>
#include <QPainter>
#include <QPixmap>
#include <QVariant>
#include "scguardedptr.h"
#include "scribusapi.h"
class QVariant;
class ScListBoxDelegate
{
public:
virtual QString text(const QVariant&) const = 0;
virtual ~ScListBoxDelegate() {};
};
template<unsigned int pixWidth, unsigned int pixHeight>
class ScListBoxPixmap : public QAbstractItemDelegate, public ScListBoxDelegate
{
public:
ScListBoxPixmap(void);
virtual QSize sizeHint (const QStyleOptionViewItem & option, const QModelIndex & index ) const;
virtual void paint(QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const;
protected:
static std::auto_ptr<QPixmap> pmap;
// The drawPixmap function must not modify pixmap size
virtual void redraw(const QVariant&) const = 0;
};
template<unsigned int pixWidth, unsigned int pixHeight>
std::auto_ptr<QPixmap> ScListBoxPixmap<pixWidth, pixHeight>::pmap;
template<unsigned int pixWidth, unsigned int pixHeight>
ScListBoxPixmap<pixWidth, pixHeight>::ScListBoxPixmap(void) : QAbstractItemDelegate()
{
if (!pmap.get())
{
pmap.reset( new QPixmap(pixWidth, pixHeight) );
}
};
template<unsigned int pixWidth, unsigned int pixHeight>
QSize ScListBoxPixmap<pixWidth, pixHeight>::sizeHint(const QStyleOptionViewItem & option, const QModelIndex & index) const
{
int h,w;
QFontMetrics metrics(option.font);
const QVariant data(index.data(Qt::DisplayRole));
if ( text(data).isEmpty() )
{
h = pmap->height();
w = pmap->width() + 6;
}
else
{
h = qMax( pmap->height(), metrics.lineSpacing() + 2 );
w = pmap->width() + metrics.width(text(data)) + 6;
}
return QSize(qMax(w, QApplication::globalStrut().width()), qMax( h, QApplication::globalStrut().height()));
};
template<unsigned int pixWidth, unsigned int pixHeight>
void ScListBoxPixmap<pixWidth, pixHeight>::paint(QPainter * qpainter, const QStyleOptionViewItem & option, const QModelIndex & index) const
{
int yPos;
const QVariant data(index.data(Qt::UserRole));
redraw(data);
int itemHeight = sizeHint( option, index ).height();
if (option.state & QStyle::State_Selected)
qpainter->fillRect(option.rect, option.palette.highlight());
qpainter->save();
qpainter->setRenderHint(QPainter::Antialiasing, true);
qpainter->setPen(Qt::NoPen);
if ( !pmap->isNull() ) {
yPos = ( itemHeight - pmap->height() ) / 2;
qpainter->drawPixmap( option.rect.x() + 3, option.rect.y() + yPos, *pmap);
}
if (option.state & QStyle::State_Selected)
qpainter->setBrush(option.palette.highlightedText());
else
qpainter->setBrush(QBrush(Qt::black));
qpainter->setPen(Qt::black);
QString txt = index.data(Qt::DisplayRole).toString();
if ( !txt.isEmpty() ) {
QFontMetrics fm = qpainter->fontMetrics();
yPos = ( ( itemHeight - fm.height() ) / 2 ) + fm.ascent();
qpainter->drawText( option.rect.x() + pmap->width() + 5, option.rect.y() + yPos, txt );
}
qpainter->restore();
};
#endif
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