Creating Classes, Libraries and Functions for the Common SLS Detector GUI

git-svn-id: file:///afs/psi.ch/project/sls_det_software/svn/slsDetectorGui@1 af1100a4-978c-4157-bff7-07162d2ba061

slsDetectorGui/slsDetectorPlotting/include/SlsQt1DZoomer.h

@@ -0,0 +1,59 @@
+
+/**
+ * @author Ian Johnson
+ * @version 1.0
+ */
+
+#ifndef SLSQT1DZOOMER_H
+#define SLSQT1DZOOMER_H
+
+
+#include <qwt_plot_zoomer.h>
+#include <qwt_plot_panner.h>
+class SlsQtH1D;
+
+class SlsQt1DZoomer:public QwtPlotZoomer{
+ private:
+  double x0,x1,y0,y1;
+  double firstXgt0,firstYgt0;
+  bool xIsLog,yIsLog;
+
+ public:
+  SlsQt1DZoomer(QwtPlotCanvas *canvas):QwtPlotZoomer(canvas){
+    setTrackerMode(AlwaysOn);
+    xIsLog=yIsLog=0;
+  }
+
+  double x() {return x0;}
+  double x_firstGreaterThan0() {return firstXgt0;}
+  double w() {return x1-x0;}
+
+  double y() {return y0;}
+  double y_firstGreaterThan0() {return firstYgt0;}
+  double h() {return y1-y0;}
+
+  void SetZoomBase(double xmin,double ymin,double x_width, double y_width);
+  void SetZoomBase(SlsQtH1D* h);
+  void ExtendZoomBase(SlsQtH1D* h);
+  void ResetZoomBase();
+
+  bool IsLogX(){ return xIsLog;}
+  bool IsLogY(){ return yIsLog;}
+  bool SetLogX(bool yes) { return xIsLog=yes;}
+  bool SetLogY(bool yes) { return yIsLog=yes;}
+
+  virtual QwtText trackerText(const QwtDoublePoint &pos) const{
+    QColor bg(Qt::white);
+#if QT_VERSION >= 0x040300
+    bg.setAlpha(200);
+#endif
+
+    QwtText text = QwtPlotZoomer::trackerText(pos);
+
+    text.setBackgroundBrush( QBrush( bg ));
+    return text;
+  }
+
+};
+
+#endif