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Posts: 1
Registered: ‎10-05-2012
My Device: 9780, 9800
My Carrier: None

Incorrect mouse coordinates on touch event (9800)

Hello fellow developers,


I have really strange problem which breaks all html laws out there. I made an app for the dutch radio station FunX.


Here is a link to download and test the app: http://bbapp.tunin.fm/bb_jar/funx/test/FunX.jad


The problem that I face is a wrong detection of the mouse coordinates tested on BB 9800. 


Here is the problematic area:

FunX Menu


We have 6 buttons, 4 for screen navigation and 2 for changing the pages of the current screen (in this case the stations list).


This is how I dettect the click event: 


tfm.container.controls.delegate('a', tfm.clickEvent, function (e) {

var s = 'X=' + e.pageX + ' Y=' + e.pageY ;



 Now, the problem comes when I touch the area below the menu (the 5 purple pixels), especially to the left and right corners. Instead of doing nothing (because there is nothing just a background in this purple area) or because it is really small and it could detect it that I am pressing the button above (stations or information), what it really happens is that it throws a click event on the arrow buttons on the top.


That is why I put this alert to track the exact coordinates of the touch, because i decided i have made some kind of mistake with the divs and anchors size and positioning, but the test for me showed that whenever I touch this purple area in the bottom of the screen (directly below the arrow buttons), the alert tells me that I am pressing everytime exactly the same Y pixel which actually is on the top of the arrow buttons (e.g. the height of the screen is 480px, the purple area is 475-480px, I press there and the alert shows always Y=406px.


Have you met such a problem? Do you have any ideas why it accures? Could you advise me something? 


The workarrounds that I figure it out are to remove this purple area and to bind the menu to the bottom, or to put something invisible there to handles the false click events, but I am really interested in finding the nature of the problem.


Thank you,

Boyan Lazarov.