[sc-dev] SF.net SVN: supercollider:[8144] trunk/build/Help/GUI/SCUserViewSubclassing /SCUserViewTutorial.sc

[jmfuo@xxxxxxxxxxxxxxxxxxxxx]

Revision: 8144
          http://supercollider.svn.sourceforge.net/supercollider/?rev=8144&view=rev
Author:   jmfuo
Date:     2008-12-15 14:04:29 +0000 (Mon, 15 Dec 2008)

Log Message:
-----------
improved SCUserView tutorial template

Modified Paths:
--------------
    trunk/build/Help/GUI/SCUserViewSubclassing/SCUserViewTutorial.sc

Modified: trunk/build/Help/GUI/SCUserViewSubclassing/SCUserViewTutorial.sc
===================================================================
--- trunk/build/Help/GUI/SCUserViewSubclassing/SCUserViewTutorial.sc	2008-12-15 13:58:40 UTC (rev 8143)
+++ trunk/build/Help/GUI/SCUserViewSubclassing/SCUserViewTutorial.sc	2008-12-15 14:04:29 UTC (rev 8144)
@@ -1,5 +1,5 @@
 // How to subclass SCUserView to make custom GUI interfaces
-// For many purposes you can use this as a template, and simply adjust the methods
+// For many purposes you can use this as a template, and simply adjust the methods. -  by jostM
 
 MyWidget : SCUserView {
 
@@ -59,27 +59,33 @@
 	
 	
 	// (6) override mouseActions
-	mouseDown{arg x, y, modifiers, buttonNumber, clickCount;
-		
+	mouseDown{ arg x, y, modifiers, buttonNumber, clickCount;
+		var newVal;
 		// this allows for user defined mouseDownAction
 		mouseDownAction.value(this, x, y, modifiers, buttonNumber, clickCount); 
 
 		// set the value and do the action
 		(modifiers == 256).if{ // restrict to no modifier
-			this.valueAction_( (x).linlin(this.bounds.left,this.bounds.left+this.bounds.width,0,1)); 
+		
+			newVal= x.linlin(this.bounds.left,this.bounds.left+this.bounds.width,0,1); 
 			// translates the mouse position in pixels to a relative value between 0 and 1
+			
+			if (newVal != value) {this.valueAction_(newVal)}; // only do something if the value changed
 		};
 	}
 	
-	mouseMove{arg x, y, modifiers, buttonNumber, clickCount;
-	
+	mouseMove{ arg x, y, modifiers, buttonNumber, clickCount;
+		var newVal;  
 		// this allows for user defined mouseMoveAction
 		mouseMoveAction.value(this, x, y, modifiers, buttonNumber, clickCount);
 		
 		// set the value and do the action
 		(modifiers == 256).if{ // restrict to no modifier
-			this.valueAction_( (x).linlin(this.bounds.left,this.bounds.left+this.bounds.width,0,1)); 
+		
+			newVal= x.linlin(this.bounds.left,this.bounds.left+this.bounds.width,0,1); 
 			// translates the mouse position in pixels to a relative value between 0 and 1
+			
+			if (newVal != value) {this.valueAction_(newVal)}; // only do something if the value changed
 		};
 		
 	}


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