TVPlot::TVPlot( QWidget *parent ):
QwtPlot( parent )
{
setTitle( "Watching TV during a weekend" );
QwtPlotCanvas *canvas = new QwtPlotCanvas();
canvas->setPalette( Qt::gray );
canvas->setBorderRadius( 10 );
setCanvas( canvas );
plotLayout()->setAlignCanvasToScales( true );
setAxisTitle( QwtPlot::yLeft, "Number of People" );
setAxisTitle( QwtPlot::xBottom, "Number of Hours" );
QwtLegend *legend = new QwtLegend;
legend->setDefaultItemMode( QwtLegendData::Checkable );
insertLegend( legend, QwtPlot::RightLegend );
populate();
connect( legend, SIGNAL( checked( const QVariant &, bool, int ) ),
SLOT( showItem( const QVariant &, bool ) ) );
replot(); // creating the legend items
QwtPlotItemList items = itemList( QwtPlotItem::Rtti_PlotHistogram );
for ( int i = 0; i < items.size(); i++ )
{
if ( i == 0 )
{
const QVariant itemInfo = itemToInfo( items[i] );
QwtLegendLabel *legendLabel =
qobject_cast<QwtLegendLabel *>( legend->legendWidget( itemInfo ) );
if ( legendLabel )
legendLabel->setChecked( true );
items[i]->setVisible( true );
}
else
{
items[i]->setVisible( false );
}
}
setAutoReplot( true );
}
void CpuPlot::showCurve( QwtPlotItem *item, bool on ) {
item->setVisible( on );
QwtLegend *lgd = qobject_cast<QwtLegend *>( legend() );
QList<QWidget *> legendWidgets =
lgd->legendWidgets( itemToInfo( item ) );
if ( legendWidgets.size() == 1 ) {
QwtLegendLabel *legendLabel =
qobject_cast<QwtLegendLabel *>( legendWidgets[0] );
if ( legendLabel )
legendLabel->setChecked( on );
}
replot();
}
void Graph::initLegend()
{
QwtLegend *legend = new QwtLegend;
legend->setDefaultItemMode(QwtLegendData::Checkable);
insertLegend(legend, QwtPlot::BottomLegend);
connect(legend, SIGNAL(checked(QVariant,bool,int)), SLOT(showCurve(QVariant,bool,int)));
QwtPlotItemList l = this->itemList(QwtPlotItem::Rtti_PlotCurve);
for(int i = 0; i < l.size(); ++i)
{
QwtPlotItem *curve = l[i];
QVariant info = itemToInfo(curve);
QWidget *w = legend->legendWidget(info);
if(w && w->inherits("QwtLegendLabel"))
((QwtLegendLabel*)w)->setChecked(curve->isVisible());
}
}
void Graph::showCurve(GraphCurve *curve, bool show)
{
showCurve(itemToInfo(curve), show, -1);
}
void caStripPlot::setLegendAttribute(QColor c, QFont f, LegendAtttribute SW)
{
int i;
#if QWT_VERSION < 0x060100
for(i=0; i < NumberOfCurves; i++) {
switch (SW) {
case TEXT:
if(thisLegendshow) {
QwtText text;
text.setText(legendText(i));
qobject_cast<QwtLegendItem*>(this->legend()->find(curve[i]))->setText(text);
}
break;
case FONT:
if(getLegendEnabled()) {
if(legend() != (QwtLegend*) 0) {
QList<QWidget *> list = legend()->legendItems();
for (QList<QWidget*>::iterator it = list.begin(); it != list.end(); ++it ) {
QWidget *w = *it;
w->setFont(f);
}
}
}
break;
case COLOR:
if(legend() != (QwtLegend*) 0) {
QList<QWidget *> list = legend()->legendItems();
for (QList<QWidget*>::iterator it = list.begin(); it != list.end(); ++it ) {
QWidget *w = *it;
QPalette palette = w->palette();
palette.setColor( QPalette::WindowText, c); // for ticks
palette.setColor( QPalette::Text, c); // for ticks' labels
w->setPalette (palette);
w->setFont(f);
}
}
break;
}
}
#else
i=0;
foreach (QwtPlotItem *plt_item, itemList()) {
if ( plt_item->rtti() == QwtPlotItem::Rtti_PlotCurve ) {
QwtLegend *lgd = qobject_cast<QwtLegend *>(legend());
QList<QWidget *> legendWidgets = lgd->legendWidgets(itemToInfo(plt_item));
if ( legendWidgets.size() == 1 ) {
QwtLegendLabel *b = qobject_cast<QwtLegendLabel *>(legendWidgets[0]);
switch (SW) {
case TEXT:
if(thisLegendshow) {
QwtText text;
text.setText(legendText(i++));
//printf("%s %s\n", b->plainText().toAscii().constData(), legendText(i-1).toAscii().constData());
b->setText(text);
b->update();
}
break;
case FONT:
//printf("%s %s\n", b->plainText().toAscii().constData(), legendText(i-1).toAscii().constData());
b->setFont(f);
b->update();
break;
case COLOR:
//printf("%s %s\n", b->plainText().toAscii().constData(), legendText(i-1).toAscii().constData());
QPalette palette = b->palette();
palette.setColor( QPalette::WindowText, c); // for ticks
palette.setColor( QPalette::Text, c); // for ticks' labels
b->setPalette(palette);
b->update();
break;
}
}
}
}
#endif
}