/**
* \brief Sets the drop properties
*/
void dropEvent(QDropEvent* event)
{
// Find the output location
drop_index = owner->indexAt(event->pos());
if ( drop_index == -1 )
drop_index = palette.count();
// Gather up the color
if ( event->mimeData()->hasColor() )
{
drop_color = event->mimeData()->colorData().value<QColor>();
}
else if ( event->mimeData()->hasText() )
{
drop_color = QColor(event->mimeData()->text());
}
drop_overwrite = false;
QRectF drop_rect = indexRect(drop_index);
if ( drop_index < palette.count() && drop_rect.isValid() )
{
// 1 column => vertical style
if ( palette.columns() == 1 || forced_columns == 1 )
{
// Dragged to the last quarter of the size of the square, add after
if ( event->posF().y() >= drop_rect.top() + drop_rect.height() * 3.0 / 4 )
drop_index++;
// Dragged to the middle of the square, overwrite existing color
else if ( event->posF().x() > drop_rect.top() + drop_rect.height() / 4 &&
( event->dropAction() != Qt::MoveAction || event->source() != owner ||
palette.colorAt(drop_index) == emptyColor ) )
drop_overwrite = true;
}
else
{
// Dragged to the last quarter of the size of the square, add after
if ( event->posF().x() >= drop_rect.left() + drop_rect.width() * 3.0 / 4 )
drop_index++;
// Dragged to the middle of the square, overwrite existing color
else if ( event->posF().x() > drop_rect.left() + drop_rect.width() / 4 &&
( event->dropAction() != Qt::MoveAction || event->source() != owner ||
palette.colorAt(drop_index) == emptyColor ) )
drop_overwrite = true;
}
}
owner->update();
}
/**
* \brief Number of rows/columns in the palette
*/
QSize rowcols()
{
int count = palette.count();
if ( count == 0 )
return QSize();
if ( forced_rows )
return QSize(std::ceil( float(count) / forced_rows ), forced_rows);
int columns = palette.columns();
if ( forced_columns )
columns = forced_columns;
else if ( columns == 0 )
columns = qMin(palette.count(), owner->width() / color_size.width());
int rows = std::ceil( float(count) / columns );
return QSize(columns, rows);
}