Fixed issue 311: Angle of rotation value isn't updated when the rotation is made with the handle. Also made opacity options hide while dragging slider

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@878 eee81c28-f429-11dd-99c0-75d572ba1ddd

editor/images/polygon.svg

@@ -12,7 +12,6 @@
    sodipodi:docname="draw-polygon.svg"
    sodipodi:docbase="/home/andreas/projekt/tango/22"
    inkscape:version="0.42"
-   sodipodi:version="0.32"
    id="svg8728"
    height="22.000000px"
    width="22.000000px"

editor/svg-editor.js

@@ -583,7 +583,14 @@ function svg_edit_setup() {
 		changeOpacity(false, perc);
 	});
 	
+	// For slider usage, see: http://jqueryui.com/demos/slider/ 
 	$("#opac_slider").slider({
+		start: function() {
+			$('#opacity_dropdown li:not(.special)').hide();
+		},
+		stop: function() {
+			$('#opacity_dropdown li').show();
+		},
 		slide: function(evt, ui){
 			changeOpacity(ui);
 		}

editor/svgcanvas.js

@@ -4610,8 +4610,10 @@ function BatchCommand(text) {
 		} // for each elem
 		svgroot.unsuspendRedraw(handle);	
 
-		// Calling changed here will cause the toolbar to be updated too many times
-// 		call("changed", elems);
+		// Only call "changed" if really necessary, as it updates the toolbar each time
+		if(current_mode == 'rotate') {
+			call("changed", elems);
+		}
 	};
 	
 	// This function returns a BatchCommand object which summarizes the