--- zogiLib/zogiLib.py	2004/06/02 21:53:15	1.21
+++ zogiLib/zogiLib.py	2004/06/03 18:05:57	1.22
@@ -569,6 +569,21 @@ class zogiLib(Folder):
         """mark image"""
         return sendFile(self, 'images/urechts.gif', 'image/gif')
 
+    def up_img(self):
+        """mark image"""
+        return sendFile(self, 'images/up.gif', 'image/gif')
+
+    def down_img(self):
+        """mark image"""
+        return sendFile(self, 'images/down.gif', 'image/gif')
+
+    def left_img(self):
+        """mark image"""
+        return sendFile(self, 'images/left.gif', 'image/gif')
+
+    def right_img(self):
+        """mark image"""
+        return sendFile(self, 'images/right.gif', 'image/gif')
 
 
             
@@ -614,7 +629,7 @@ class zogiLib(Folder):
 	    print "ZOGILIB: have to store query!!"
 	    storeQuery(self)
         
-    def getDLParam(self,param):
+    def getDLParam(self, param):
         """returns parameter"""
         try:
             return self.REQUEST.SESSION['query'][param]
@@ -697,7 +712,6 @@ class zogiLib(Folder):
             return int(ws)+1
         else:
             return 2
-
         
     def getSmallerWS(self):
         """ws-1"""
@@ -725,7 +739,28 @@ class zogiLib(Folder):
         pn = self.getPN()
         return (pn > 1)
 
-   
+    def canMoveLeft(self):
+        """returns if its possible to move left"""
+        wx = float(self.getDLParam('wx') or 0)
+        return (wx > 0)
+
+    def canMoveRight(self):
+        """returns if its possible to move right"""
+        wx = float(self.getDLParam('wx') or 0)
+        ww = float(self.getDLParam('ww') or 1)
+        return (wx + ww < 1)
+
+    def canMoveUp(self):
+        """returns if its possible to move up"""
+        wy = float(self.getDLParam('wy') or 0)
+        return (wy > 0)
+
+    def canMoveDown(self):
+        """returns if its possible to move down"""
+        wy = float(self.getDLParam('wy') or 0)
+        wh = float(self.getDLParam('wh') or 1)
+        return (wy + wh < 1)
+
         
     def dl_HMirror(self):
         """mirror action"""
@@ -747,6 +782,66 @@ class zogiLib(Folder):
 
         return self.display()
 
+    def dl_Zoom(self, z):
+        """general zoom action"""
+        ww1 = float(self.getDLParam('ww') or 1)
+        wh1 = float(self.getDLParam('wh') or 1)
+        wx = float(self.getDLParam('wx') or 0)
+        wy = float(self.getDLParam('wy') or 0)
+        ww2 = ww1 * z
+        wh2 = wh1 * z
+        wx += (ww1 - ww2) / 2
+        wy += (wh1 - wh2) / 2
+        ww2 = max(min(ww2, 1), 0)
+        wh2 = max(min(wh2, 1), 0)
+        wx = max(min(wx, 1), 0)
+        wy = max(min(wy, 1), 0)
+        self.setDLParam('ww', ww2)
+        self.setDLParam('wh', wh2)
+        self.setDLParam('wx', wx)
+        self.setDLParam('wy', wy)
+        return self.display()
+        
+    def dl_ZoomIn(self):
+        """zoom in action"""
+        z = 0.7071
+        return self.dl_Zoom(z)
+
+    def dl_ZoomOut(self):
+        """zoom out action"""
+        z = 1.4142
+        return self.dl_Zoom(z)
+
+    def dl_Move(self, dx, dy):
+        """general move action"""
+        ww = float(self.getDLParam('ww') or 1)
+        wh = float(self.getDLParam('wh') or 1)
+        wx = float(self.getDLParam('wx') or 0)
+        wy = float(self.getDLParam('wy') or 0)
+        wx += dx * 0.5 * ww
+        wy += dy * 0.5 * wh
+        wx = max(min(wx, 1), 0)
+        wy = max(min(wy, 1), 0)
+        self.setDLParam('wx', wx)
+        self.setDLParam('wy', wy)
+        return self.display()
+        
+    def dl_MoveLeft(self):
+        """move left action"""
+        return self.dl_Move(-1, 0)
+    
+    def dl_MoveRight(self):
+        """move left action"""
+        return self.dl_Move(1, 0)
+    
+    def dl_MoveUp(self):
+        """move left action"""
+        return self.dl_Move(0, -1)
+    
+    def dl_MoveDown(self):
+        """move left action"""
+        return self.dl_Move(0, 1)
+    
     def dl_WholePage(self):
         """zoom out action"""
         self.setDLParam('ww', 1)