/*!
Paint event handler
\param event Paint event
*/
void QwtThermo::paintEvent( QPaintEvent *event )
{
QPainter painter( this );
painter.setClipRegion( event->region() );
QStyleOption opt;
opt.init(this);
style()->drawPrimitive(QStyle::PE_Widget, &opt, &painter, this);
const QRect tRect = pipeRect();
if ( !tRect.contains( event->rect() ) )
{
if ( d_data->scalePosition != QwtThermo::NoScale )
scaleDraw()->draw( &painter, palette() );
}
const int bw = d_data->borderWidth;
const QBrush brush = palette().brush( QPalette::Base );
qDrawShadePanel( &painter,
tRect.adjusted( -bw, -bw, bw, bw ),
palette(), true, bw,
d_data->autoFillPipe ? &brush : NULL );
drawLiquid( &painter, tRect );
}
/*!
Recalculate the QwtThermo geometry and layout based on
pipeRect() and the fonts.
\param update_geometry notify the layout system and call update
to redraw the scale
*/
void QwtThermo::layoutThermo( bool update_geometry )
{
const QRect tRect = pipeRect();
const int bw = d_data->borderWidth + d_data->spacing;
const bool inverted = ( upperBound() < lowerBound() );
int from, to;
if ( d_data->orientation == Qt::Horizontal )
{
from = tRect.left();
to = tRect.right();
if ( d_data->rangeFlags & QwtInterval::ExcludeMinimum )
{
if ( inverted )
to++;
else
from--;
}
if ( d_data->rangeFlags & QwtInterval::ExcludeMaximum )
{
if ( inverted )
from--;
else
to++;
}
if ( d_data->scalePosition == QwtThermo::TrailingScale )
{
scaleDraw()->setAlignment( QwtScaleDraw::TopScale );
scaleDraw()->move( from, tRect.top() - bw );
}
else
{
scaleDraw()->setAlignment( QwtScaleDraw::BottomScale );
scaleDraw()->move( from, tRect.bottom() + bw );
}
scaleDraw()->setLength( qMax( to - from, 0 ) );
}
else // Qt::Vertical
{
from = tRect.top();
to = tRect.bottom();
if ( d_data->rangeFlags & QwtInterval::ExcludeMinimum )
{
if ( inverted )
from--;
else
to++;
}
if ( d_data->rangeFlags & QwtInterval::ExcludeMaximum )
{
if ( inverted )
to++;
else
from--;
}
if ( d_data->scalePosition == QwtThermo::LeadingScale )
{
scaleDraw()->setAlignment( QwtScaleDraw::RightScale );
scaleDraw()->move( tRect.right() + bw, from );
}
else
{
scaleDraw()->setAlignment( QwtScaleDraw::LeftScale );
scaleDraw()->move( tRect.left() - bw, from );
}
scaleDraw()->setLength( qMax( to - from, 0 ) );
}
if ( update_geometry )
{
updateGeometry();
update();
}
}
/*!
Recalculate the QwtThermo geometry and layout based on
the QwtThermo::contentsRect() and the fonts.
\param update_geometry notify the layout system and call update
to redraw the scale
*/
void QwtThermo::layoutThermo( bool update_geometry )
{
const QRect tRect = pipeRect();
const int bw = d_data->borderWidth + d_data->spacing;
const bool inverted = ( maxValue() < minValue() );
int from, to;
if ( d_data->orientation == Qt::Horizontal )
{
from = tRect.left();
to = tRect.right();
if ( d_data->rangeFlags & QwtInterval::ExcludeMinimum )
{
if ( inverted )
to++;
else
from--;
}
if ( d_data->rangeFlags & QwtInterval::ExcludeMaximum )
{
if ( inverted )
from--;
else
to++;
}
switch ( d_data->scalePos )
{
case TopScale:
{
scaleDraw()->setAlignment( QwtScaleDraw::TopScale );
scaleDraw()->move( from, tRect.top() - bw );
scaleDraw()->setLength( to - from );
break;
}
case BottomScale:
case NoScale:
default:
{
scaleDraw()->setAlignment( QwtScaleDraw::BottomScale );
scaleDraw()->move( from, tRect.bottom() + bw );
scaleDraw()->setLength( to - from );
break;
}
}
d_data->map.setPaintInterval( from, to );
}
else // Qt::Vertical
{
from = tRect.top();
to = tRect.bottom();
if ( d_data->rangeFlags & QwtInterval::ExcludeMinimum )
{
if ( inverted )
from--;
else
to++;
}
if ( d_data->rangeFlags & QwtInterval::ExcludeMaximum )
{
if ( inverted )
to++;
else
from--;
}
switch ( d_data->scalePos )
{
case RightScale:
{
scaleDraw()->setAlignment( QwtScaleDraw::RightScale );
scaleDraw()->move( tRect.right() + bw, from );
scaleDraw()->setLength( to - from );
break;
}
case LeftScale:
case NoScale:
default:
{
scaleDraw()->setAlignment( QwtScaleDraw::LeftScale );
scaleDraw()->move( tRect.left() - bw, from );
scaleDraw()->setLength( to - from );
break;
}
}
d_data->map.setPaintInterval( to, from );
}
if ( update_geometry )
{
updateGeometry();
update();
}
}
