added shortcut setShowZeroAxes() to JKQTBasePlotter and JKQTPlotter

lib/jkqtplotter/jkqtpbaseplotter.cpp

@@ -304,7 +304,16 @@ JKQTBasePlotter::~JKQTBasePlotter(){
 void JKQTBasePlotter::setGrid(bool val) {
     xAxis->setDrawGrid(val);
     yAxis->setDrawGrid(val);
-};
+}
+
+void JKQTBasePlotter::setShowZeroAxes(bool showX, bool showY) {
+    getXAxis()->setShowZeroAxis(showX);
+    getYAxis()->setShowZeroAxis(showY);
+}
+
+void JKQTBasePlotter::setShowZeroAxes(bool showXY) {
+    setShowZeroAxes(showXY,showXY);
+}
 
 void JKQTBasePlotter::useExternalDatastore(JKQTPDatastore* newStore){
     if (datastoreInternal && datastore!=nullptr) {

lib/jkqtplotter/jkqtpbaseplotter.h

@@ -1434,6 +1434,18 @@ class JKQTP_LIB_EXPORT JKQTBasePlotter: public QObject {
         /** \brief sets whether to plot grid lines or not */
         void setGrid(bool val);
 
+        /** \brief switches the visibility of the zero-axes associated with the x- and y-axis
+         *
+         * \param showX indicates whether to show the zero-axis associated with the x-axis (i.e. x==0 or the vertical zero-axis)
+         * \param showY indicates whether to show the zero-axis associated with the y-axis (i.e. y==0 or the horizontal zero-axis)
+         * */
+        void setShowZeroAxes(bool showX, bool showY);
+        /** \brief switches the visibility of the zero-axes associated with the x- and y-axis
+         *
+         * \param showXY indicates whether to show the zero-axis associated with the x- and y-axis
+         * */
+        void setShowZeroAxes(bool showXY);
+
         /** \brief save the current plot as a pixel image image (PNG ...), if filename is empty a file selection dialog is displayed */
         void saveAsPixelImage(const QString& filename=QString(""), bool displayPreview=true, const QByteArray &outputFormat=QByteArray());
 

lib/jkqtplotter/jkqtplotter.h

@@ -926,6 +926,22 @@ class JKQTP_LIB_EXPORT JKQTPlotter: public QWidget {
             plotter->setGrid(val);
         }
 
+        /** \brief switches the visibility of the zero-axes associated with the x- and y-axis
+         *
+         * \param showX indicates whether to show the zero-axis associated with the x-axis (i.e. x==0 or the vertical zero-axis)
+         * \param showY indicates whether to show the zero-axis associated with the y-axis (i.e. y==0 or the horizontal zero-axis)
+         * */
+        inline void setShowZeroAxes(bool showX, bool showY) {
+            plotter->setShowZeroAxes(showX, showY);
+        }
+        /** \brief switches the visibility of the zero-axes associated with the x- and y-axis
+         *
+         * \param showXY indicates whether to show the zero-axis associated with the x- and y-axis
+         * */
+        inline void setShowZeroAxes(bool showXY) {
+            plotter->setShowZeroAxes(showXY);
+        }
+
         /** \brief save the current plot as an image file, with the current widget aspect ratio, if filename is empty a file selection dialog is displayed.
         *          The image format is extracted from the file extension (jpeg, tiff, png, pdf, ...) */
         inline void saveImage(const QString& filename=QString(""), bool displayPreview=true) {