added a reset View feature in view menu that resets the view to the l…

…ast save position since students kept loosing their curcuits in the workspace. COuld improve by making it auto fit the current cricuit but this was a quicker fix and works fine for now

src/com/modsim/gui/GUI.java

@@ -265,7 +265,10 @@ public void zoomOutToView()
 		view.zoomOut(view.getWidth()/2,view.getHeight()/2);
 	}
 
-
+	public void resetView()
+	{
+		view.resetView();
+	} 
 
 
 	/**

src/com/modsim/gui/Menu.java

@@ -83,6 +83,7 @@ private void addViewMenu() {
         JMenu view = new JMenu("View");
         view.setMnemonic(KeyEvent.VK_V);
         view.add(Ops.toggleAA);
+        view.add(Ops.resetView);
         app_menu.add(view);
     }
 

src/com/modsim/gui/view/View.java

@@ -21,13 +21,16 @@
  */
 public class View extends JPanel {
 
-    public int zoomI = 3;
+	public int init_zoomI = 3;
+	public double init_camX = 0, init_camY = 0;
+
+    public int zoomI = init_zoomI;
     public double zoom = zoomI * ZOOM_MULTIPLIER;
 
     public static final double ZOOM_MULTIPLIER = 0.15;
     public static final int ZOOM_LIMIT = 12;
 
-    public double camX = 0, camY = 0;
+    public double camX = init_camX, camY = init_camY;
     public AffineTransform wToV = new AffineTransform();
 
     private static final long serialVersionUID = 1L;
@@ -250,4 +253,13 @@ public void zoomOut(int x, int y) {
         }
     }
 
+	public void resetView() {
+		//center view
+		camX = init_camX;
+		camY = init_camY;
+		//reset zoom
+		zoomI = init_zoomI;
+	    zoom = zoomI * ZOOM_MULTIPLIER;
+	}
+
 }

src/com/modsim/operations/Ops.java

@@ -136,7 +136,7 @@ public static void fileNew() {
     // Core application actions
     public static final DesignAction undo, redo, copy, paste, delete, rotateCW, rotateCCW, rotate180,
             labelEdit, labelBig, labelSmall,
-            pause, run, step, toggleRun, zoomIn, zoomOut, toggleAA, open, save, saveAs, fileNew, quit;
+            pause, run, step, toggleRun, zoomIn, zoomOut, resetView, toggleAA, open, save, saveAs, fileNew, quit;
 
     static {
         // Keyboard shortcuts
@@ -248,7 +248,7 @@ public static void fileNew() {
         //Zoom controls
         zoomIn = new DesignAction(event -> Main.ui.zoomInToView(), "Zoom In");
         zoomOut = new DesignAction(event -> Main.ui.zoomOutToView(), "Zoom Out");
-
+        resetView = new DesignAction(event -> Main.ui.resetView(), "Reset View");
 
         // View controls
         toggleAA = new DesignAction(event -> Main.ui.view.useAA = !Main.ui.view.useAA,

src/com/modsim/util/XMLReader.java

@@ -44,9 +44,9 @@ public static void readFile(File xmlFile) {
             // View load
             Element view = (Element) doc.getElementsByTagName("view").item(0);
             View v = Main.ui.view;
-            v.camX = Double.parseDouble(view.getAttribute("camX"));
-            v.camY = Double.parseDouble(view.getAttribute("camY"));
-            v.zoomI = Integer.parseInt(view.getAttribute("zoom"));
+            v.init_camX = v.camX = Double.parseDouble(view.getAttribute("camX"));
+            v.init_camY = v.camY = Double.parseDouble(view.getAttribute("camY"));
+            v.init_zoomI = v.zoomI = Integer.parseInt(view.getAttribute("zoom"));
             v.zoom = View.ZOOM_MULTIPLIER * v.zoomI;
             v.calcXForm();