void PlotZoomer::zoom(int up)
{
// FIXME: Save the current zoom window in case it's been panned.
int zoomIndex = zoomRectIndex();
if (zoomIndex > 0)
{
QStack<QRectF> stack = zoomStack();
if (zoomIndex < stack.size())
{
QRectF r = scaleRect();
stack[zoomIndex] = r;
setZoomStack(stack, zoomIndex);
}
}
Super::zoom(up);
if (zoomRectIndex() == 0)
{
if (QwtPlot *plotter = plot())
{
plotter->setAxisAutoScale(AxisX);
plotter->setAxisAutoScale(AxisY);
plotter->updateAxes();
}
}
}
void PlotZoomer::saveSettings(QSettings &settings)
{
settings.beginGroup("zoom");
settings.setValue("mode", int(_zoomMode));
settings.setValue("index", zoomRectIndex());
settings.beginWriteArray("stack", zoomStack().size());
int i = 0;
for (const QRectF &zoom : zoomStack())
{
settings.setArrayIndex(i++);
write(settings, zoom);
}
settings.endArray();
settings.endGroup();
}
LogPlotZoomer::LogPlotZoomer(QWidget *canvas) :
QwtPlotZoomer(canvas)
#else
LogPlotZoomer::LogPlotZoomer(QwtPlotCanvas *canvas):
QwtPlotZoomer(canvas)
#endif
{}
#if QWT_VERSION > 0x060000
QwtText LogPlotZoomer::trackerTextF(const QwtDoublePoint &pos) const
#else
QwtText LogPlotZoomer::trackerText(const QwtDoublePoint &pos) const
#endif
{
switch (rubberBand())
{
case HLineRubberBand:
return QString().sprintf("%.4g", pos.y());
case VLineRubberBand:
return QString().sprintf("%.4g", pos.x());
default:
return QString().sprintf("%.4g, %.4g", pos.x(), pos.y());
}
return QwtText(); // make some dumb compilers happy
}
/*void QwtPlotZoomer::move(double x, double y)
{
x = qwtMax(x, zoomBase().left());
x = qwtMin(x, zoomBase().right() - zoomRect().width());
y = qwtMax(y, zoomBase().top());
y = qwtMin(y, zoomBase().bottom() - zoomRect().height());
if (x != zoomRect().left() || y != zoomRect().top())
{
d_data->zoomStack[d_data->zoomRectIndex].moveTo(x, y);
rescale();
}
}*/
#if QWT_VERSION > 0x060000
void LogPlotZoomer::moveTo(const QPointF & pos)
{
double x = pos.x();
double y = pos.y();
#else
void LogPlotZoomer::move(double x, double y)
{
#endif
//QwtPlotZoomer::move(x,y);
x = qwtMax(x, (double)zoomBase().left());
x = qwtMin(x, (double)(zoomBase().right() - zoomRect().width()));
y = qwtMax(y, (double)zoomBase().top());
y = qwtMin(y, (double)(zoomBase().bottom() - zoomRect().height()));
if (x != zoomRect().left() || y != zoomRect().top())
{
//zoomStack()[zoomRectIndex()].moveTo(x, y);
QwtDoubleRect & rect = const_cast<QwtDoubleRect &>(zoomStack()[zoomRectIndex()]);
//handle x axis
const int xAxis = QwtPlotZoomer::xAxis();
const QwtScaleEngine *sex = plot()->axisScaleEngine(xAxis);
#if QWT_VERSION > 0x060000
if (dynamic_cast<const QwtLogScaleEngine*>(sex))
#else
if (dynamic_cast<const QwtLog10ScaleEngine*>(sex))
#endif
{
//logarithmic
double factor = rect.right() / rect.left();
rect.setRight(x * factor);
rect.setLeft(x);
}
else
{
rect.moveLeft(x);
}
const int yAxis = QwtPlotZoomer::yAxis();
const QwtScaleEngine *sey = plot()->axisScaleEngine(yAxis);
#if QWT_VERSION > 0x060000
if (dynamic_cast<const QwtLogScaleEngine*>(sey))
#else
if (dynamic_cast<const QwtLog10ScaleEngine*>(sey))
#endif
{
//logarithmic
double factor = rect.bottom() / rect.top();
rect.setBottom(y * factor);
rect.setTop(y);
}
else
{
rect.moveTop(y);
}
//zoomStack()[zoomRectIndex()].moveTo(x, y);
rescale();
}
}
