2020-05-05 10:12:05 +02:00

94 lines
3.0 KiB
C++

/* TODO! short description */
#include "SlsQt1DZoomer.h"
#include "SlsQt1DPlot.h"
#include <iostream>
#include <qwt_plot.h>
#include <qwt_scale_div.h>
void SlsQt1DZoomer::ResetZoomBase() {
SetZoomBase(x0, y0, x1 - x0,
y1 - y0); // for going between log and nonlog plots
}
void SlsQt1DZoomer::SetZoomBase(double xmin, double ymin, double x_width,
double y_width) {
if (xIsLog && xmin <= 0) {
double xmax = xmin + x_width;
xmin = firstXgt0 * 0.98;
if (xmax <= xmin)
x_width = firstXgt0;
else
x_width = xmax - xmin;
}
if (yIsLog && ymin <= 0) {
double ymax = ymin + y_width;
ymin = firstYgt0 * 0.98;
if (ymax <= ymin)
y_width = firstYgt0;
else
y_width = ymax - ymin;
}
if (plot()) {
if (xIsLog) {
double xmin_curr =
plot()->axisScaleDiv(QwtPlot::xBottom).lowerBound();
double xmax_curr =
plot()->axisScaleDiv(QwtPlot::xBottom).upperBound();
if (xmin_curr < xmin)
xmin_curr = xmin;
if (xmax_curr > xmin + x_width)
xmax_curr = xmin + x_width;
plot()->setAxisScale(QwtPlot::xBottom, xmin_curr, xmax_curr);
}
if (yIsLog) {
double ymin_curr =
plot()->axisScaleDiv(QwtPlot::yLeft).lowerBound();
double ymax_curr =
plot()->axisScaleDiv(QwtPlot::yLeft).upperBound();
if (ymin_curr < ymin)
ymin_curr = ymin;
if (ymax_curr > ymin + y_width)
ymax_curr = ymin + y_width;
plot()->setAxisScale(QwtPlot::yLeft, ymin_curr, ymax_curr);
}
plot()->replot();
}
setZoomBase(QRectF(xmin, ymin, x_width, y_width));
}
void SlsQt1DZoomer::SetZoomBase(SlsQtH1D *h) {
x0 = h->GetXMin() < 0 ? h->GetXMin() * 1.02 : h->GetXMin() / 1.02;
x1 = h->GetXMax() < 0 ? h->GetXMax() / 1.02 : h->GetXMax() * 1.02;
y0 = h->GetYMin() < 0 ? h->GetYMin() * 1.02 : h->GetYMin() / 1.02;
y1 = h->GetYMax() < 0 ? h->GetYMax() / 1.02 : h->GetYMax() * 1.02;
firstXgt0 = h->GetFirstXgtZero(); // for log plots
firstYgt0 = h->GetFirstYgtZero(); // for log plots
ResetZoomBase();
}
void SlsQt1DZoomer::ExtendZoomBase(SlsQtH1D *h) {
double h_x0 = h->GetXMin() < 0 ? h->GetXMin() * 1.02 : h->GetXMin() / 1.02;
double h_x1 = h->GetXMax() < 0 ? h->GetXMax() / 1.02 : h->GetXMax() * 1.02;
double h_y0 = h->GetYMin() < 0 ? h->GetYMin() * 1.02 : h->GetYMin() / 1.02;
double h_y1 = h->GetYMax() < 0 ? h->GetYMax() / 1.02 : h->GetYMax() * 1.02;
if (h_x0 < x0)
x0 = h_x0;
if (h_x1 > x1)
x1 = h_x1;
if (h_y0 < y0)
y0 = h_y0;
if (h_y1 > y1)
y1 = h_y1;
if (h->GetFirstXgtZero() < firstXgt0)
firstXgt0 = h->GetFirstXgtZero();
if (h->GetFirstYgtZero() < firstYgt0)
firstYgt0 = h->GetFirstYgtZero();
ResetZoomBase();
}