Blocking mouse wheel in browser when mouse over screen

Code (csharp):

1.  
2. if("Mouse in screen")
3. Application.Call("disableWheel")
4. else
5. Application.Call("enableWheel")
6.  
7.  
8. //Add this javscript to the web page
9.  
10.  
11. function disableWheel() {
12.     /* Gecko */
13.     addHandler(window, 'DOMMouseScroll', wheel);
14.     /* Opera */
15.     addHandler(window, 'mousewheel', wheel);
16.     /* IE */
17.     addHandler(document, 'mousewheel', wheel);
18. }
19.  
20. function enableWheel() {
21.     /* Gecko */
22.     removeHandler(window, 'DOMMouseScroll', wheel);
23.     /* Opera */
24.     removeHandler(window, 'mousewheel', wheel);
25.     /* IE */
26.     removeHandler(document, 'mousewheel', wheel);
27. }
28.  
29. //function for add envent handler
30. function addHandler(object, event, handler, useCapture) {
31.     if (object.addEventListener) {
32.         object.addEventListener(event, handler, useCapture ? useCapture : false);
33.     } else if (object.attachEvent) {
34.         object.attachEvent('on' + event, handler);
35.     } else alert("Add handler is not supported");
36. }
37.  
38. //function for remove envent handler
39. function removeHandler(object, event, handler) {
40.     if (object.removeEventListener) {
41.         object.removeEventListener(event, handler, false);
42.     } else if (object.detachEvent) {
43.         object.detachEvent('on' + event, handler);
44.     } else alert("Remove handler is not supported");
45. }
46.  
47. // Wheel event handler
48. function wheel(event) {
49.     var delta; // Scroll direction
50.     // -1 - scroll down
51.     // 1  - scroll up
52.     event = event || window.event;
53.     // Opera  IE works with property wheelDelta
54.     if (event.wheelDelta) {
55.         delta = event.wheelDelta / 120;
56.         // In Опере value of wheelDelta the same but with opposite sign
57.         if (window.opera) delta = -delta;
58.         // Gecko uses property detail
59.     } else if (event.detail) {
60.         delta = -event.detail / 3;
61.     }
62.     // Disables processing events
63.     if (event.preventDefault) event.preventDefault();
64.     event.returnValue = false;
65.     return delta;
66. }
67.  

 

Great Script!!

I think though that it is Application.ExternalCall()

How do you detect when the mouse is on Screen?

I've detect with making a new Rect(0,0,Screen.width,Screen.height) and then
use the Contains(Input.mousePosition) but I wonder if there is an easier way...

 

Ou! Thank you for this solution, it's really needfull

 

Building on Russian Madman code I made this one that you just need to run once, is Javascript only, and does not require any call from the Unity player:

Code (csharp):

1. // Call this after your unityObject.embedUnity (...) command
2. disableBrowserWheelUnity ();
3.  
4. // Functions
5. // Disable wheel function when mouse is over Unity div
6. function disableBrowserWheelUnity () {
7.     var myUnity = document.getElementById ( 'unityPlayer' ); // Replace with the id of the div containing your player
8.     if ( myUnity === undefined || myUnity === null ) {
9.         // Come back later if embed not ready yet
10.         setTimeout ( disableBrowserWheelUnity, 2000 );
11.         return;
12.     }
13.     /* Gecko */
14.     addHandler ( myUnity, 'DOMMouseScroll', wheel );
15.     /* Opera and IE? Not tested for IE */
16.     addHandler ( myUnity, 'mousewheel', wheel );
17. }
18.  
19. / /function to add event handler
20. function addHandler ( object, event, handler, useCapture ) {
21.     if ( object.addEventListener ) {
22.         object.addEventListener ( event, handler, useCapture ? useCapture : false );
23.     } else if ( object.attachEvent ) {
24.         object.attachEvent ( 'on' + event, handler );
25.     } else alert ( "Add handler is not supported" );
26. }
27.  
28. // Wheel event handler
29. function wheel ( event ) {
30.     var delta; // Scroll direction
31.     // -1 - scroll down
32.     // 1  - scroll up
33.     event = event || window.event;
34.     // Opera  IE works with property wheelDelta
35.     if (event.wheelDelta) {
36.         delta = event.wheelDelta / 120;
37.         // In value of wheelDelta the same but with opposite sign
38.         if ( window.opera ) delta = -delta;
39.         // Gecko uses property detail
40.     } else if ( event.detail ) {
41.         delta = -event.detail / 3;
42.     }
43.     // Disables processing events
44.     if ( event.preventDefault ) event.preventDefault ();
45.     event.returnValue = false;
46.     return delta;
47. }