void Spectrogram::createLabels()
{
clearLabels();
QwtValueList levels = contourLevels();
const int numLevels = levels.size();
for (int l = 0; l < numLevels; l++){
PlotMarker *m = new PlotMarker(l, d_labels_angle);
QwtText t = QwtText(QString::number(levels[l]));
t.setColor(d_labels_color);
t.setFont(d_labels_font);
if (d_white_out_labels)
t.setBackgroundBrush(QBrush(Qt::white));
else
t.setBackgroundBrush(QBrush(Qt::transparent));
m->setLabel(t);
int x_axis = xAxis();
int y_axis = yAxis();
m->setAxis(x_axis, y_axis);
if (d_graph && d_show_labels)
m->attach(d_graph);
d_labels_list << m;
}
}
void QwtHistogram::loadLabels()
{
clearLabels();
int size = this->dataSize();
if (!size)
return;
QwtPlot *d_plot = plot();
if (!d_plot)
return;
int index = 0;
for (int i = 0; i < size; i++){
PlotMarker *m = new PlotMarker(index, d_labels_angle);
QwtText t = QwtText(QString::number(y(i)));
t.setColor(d_labels_color);
t.setFont(d_labels_font);
if (d_white_out_labels)
t.setBackgroundBrush(QBrush(Qt::white));
else
t.setBackgroundBrush(QBrush(Qt::transparent));
m->setLabel(t);
int x_axis = xAxis();
int y_axis = yAxis();
m->setAxis(x_axis, y_axis);
QSize size = t.textSize();
int dx = int(d_labels_x_offset*0.01*size.height());
int dy = -int((d_labels_y_offset*0.01 + 0.5)*size.height());
int x2 = d_plot->transform(x_axis, x(index)) + dx;
int y2 = d_plot->transform(y_axis, y(index)) + dy;
switch(d_labels_align){
case Qt::AlignLeft:
break;
case Qt::AlignHCenter:
x2 -= size.width()/2;
break;
case Qt::AlignRight:
x2 -= size.width();
break;
}
m->setXValue(d_plot->invTransform(x_axis, x2));
m->setYValue(d_plot->invTransform(y_axis, y2));
m->attach(d_plot);
d_labels_list << m;
index++;
}
d_show_labels = true;
}
QwtText CurveTracker::trackerTextF( const QPointF &pos ) const
{
QwtText trackerText;
trackerText.setColor( Qt::black );
QColor c( "#333333" );
trackerText.setBorderPen( QPen( c, 2 ) );
c.setAlpha( 200 );
trackerText.setBackgroundBrush( c );
QString info;
const QwtPlotItemList curves =
plot()->itemList( QwtPlotItem::Rtti_PlotCurve );
for ( int i = 0; i < curves.size(); i++ )
{
const QString curveInfo = curveInfoAt(
static_cast<const QwtPlotCurve *>( curves[i] ), pos );
if ( !curveInfo.isEmpty() )
{
if ( !info.isEmpty() )
info += "<br>";
info += curveInfo;
}
}
trackerText.setText( info );
return trackerText;
}
//将位置转换成字符串
QwtText RectPicker::trackerTextF(const QPointF &pos) const
{
QwtText text;
const QPolygon points = selection();//选择的点
if (!points.isEmpty())
{
QString num;
QPoint point = points[0];
QPointF point2 = invTransform(point);
num = QString("(%1,%2),(,)").arg(point2.x()).arg(point2.y());
QColor bg(Qt::white);
bg.setAlpha(200);
if (points.size() == 2)
{
QPointF point0 = invTransform(points[0]);
QPointF point1 = invTransform(points[1]);
num = QString("(%1,%2),(%3,%4)").arg(point0.x()).arg(point0.y()).arg(point1.x()).arg(point1.y());
}
text.setBackgroundBrush(QBrush(bg));
text.setText(num);
}
return text;
}
virtual QwtText trackerTextF(const QPointF &pos) const
{
QColor bg(Qt::white);
QwtText text = QwtPlotZoomer::trackerTextF(pos);
text.setBackgroundBrush( QBrush( bg ));
return text;
}
virtual QwtText trackerText(const QwtDoublePoint &pos) const
{
QColor bg(Qt::white);
bg.setAlpha(200);
QwtText text = QwtPlotZoomer::trackerText(pos);
text.setBackgroundBrush( QBrush( bg ));
return text;
}
QwtText
Zoomer::trackerTextF( const QPointF &pos ) const
{
QColor bg( Qt::white );
bg.setAlpha( 128 );
QwtText text;
if ( tracker2_ && ( p1_.x() || p1_.y() ) ) { // has 1st point
text = tracker2_( invTransform( p1_ ), pos );
} else if ( tracker1_ ) {
text = tracker1_( pos );
} else {
text = QwtPlotZoomer::trackerTextF( pos );
}
text.setBackgroundBrush( QBrush( bg ) );
return text;
}
virtual QwtText trackerTextF( const QPointF &pos ) const
{
// the white text is hard to see over a light canvas background
QColor bg( Qt::darkGray );
bg.setAlpha( 160 );
QwtText text;
const int idx = dynamic_cast<const Plot*>( plot() )->frameAt( pos.x() );
if ( idx >= 0 )
{
text = infoText( idx );
text.setBackgroundBrush( QBrush( bg ) );
}
return text;
}
virtual QwtText trackerTextF( const QPointF &pos ) const
{
QwtText text;
const QPolygon points = selection();
if ( !points.isEmpty() )
{
QString num;
num.setNum( QLineF( pos, invTransform( points[0] ) ).length() );
QColor bg( Qt::green );
bg.setAlpha( 200 );
text.setBackgroundBrush( QBrush( bg ) );
text.setText( num );
}
return text;
}
virtual QwtText trackerText(const QPoint& pos) const
{
// find all points near cursor
QSet<uint> nearbySampleIds = GetNearbySamples(pos);
QString tooltipStr;
if(nearbySampleIds.size() != 0)
{
foreach(uint id, nearbySampleIds)
tooltipStr += m_samples->GetSample(id).GetName() + QString(", ");
tooltipStr = tooltipStr.left(tooltipStr.size()-2);
}
QwtText tooltipText;
if(!tooltipStr.isEmpty())
{
tooltipText.setText(tooltipStr);
tooltipText.setBackgroundBrush(QBrush(QColor(255,255,255,192)));
}
return tooltipText;
}
void DataCurve::loadLabels()
{
if (!validCurveType())
return;
clearLabels();
int xcol = d_table->colIndex(d_x_column);
int ycol = d_table->colIndex(title().text());
int labelsCol = d_table->colIndex(d_labels_column);
int cols = d_table->numCols();
if (xcol < 0 || ycol < 0 || labelsCol < 0 ||
xcol >= cols || ycol >= cols || labelsCol >= cols)
return;
QwtPlot *d_plot = plot();
if (!d_plot)
return;
int index = 0;
for (int i = d_start_row; i <= d_end_row; i++) {
if (d_table->text(i, xcol).isEmpty() ||
d_table->text(i, ycol).isEmpty())
continue;
PlotMarker *m = new PlotMarker(index, d_labels_angle);
QwtText t = QwtText(d_table->text(i, labelsCol));
t.setColor(d_labels_color);
t.setFont(d_labels_font);
if (d_white_out_labels)
t.setBackgroundBrush(QBrush(Qt::white));
else
t.setBackgroundBrush(QBrush(Qt::transparent));
m->setLabel(t);
int x_axis = xAxis();
int y_axis = yAxis();
m->setAxis(x_axis, y_axis);
QSize size = t.textSize();
int dx = int(d_labels_x_offset*0.01*size.height());
int dy = -int((d_labels_y_offset*0.01 + 0.5)*size.height());
int x2 = d_plot->transform(x_axis, x(index)) + dx;
int y2 = d_plot->transform(y_axis, y(index)) + dy;
switch(d_labels_align) {
case Qt::AlignLeft:
break;
case Qt::AlignHCenter:
x2 -= size.width()/2;
break;
case Qt::AlignRight:
x2 -= size.width();
break;
}
m->setXValue(d_plot->invTransform(x_axis, x2));
m->setYValue(d_plot->invTransform(y_axis, y2));
m->attach(d_plot);
d_labels_list << m;
index++;
}
d_show_labels = true;
}
