LiveCode Forums.

I was wondering if there was a way to make a player object receive the scroll messages from a mouse with a scroll wheel or from a two finger scroll gesture on a Mac Book Pro track pad.

The Quicktime Player application and a quicktime player in a web page does receive these so you can scrub back and forth in the video with the scroll button or on the track pad. I have tried this with a player in revolution and it does not work.

Martin

the scrollweel emits rawkeydown messages, so you can catch that, and do anything you want, like increasing or decreasing playloudness, the currentime, or the playrate.

Thanks for the tip.

I managed to trap the rawkeydown messages and have them change the player's current time by putting the handlers I have listed below in the player's script, but, now when I scroll the mouse wheel up and down the slider in the movie controller moves accordingly but the movie does not redraw. If I click on a step button or push play then the movie will refresh and show the next frame. Is there another command that I need to make it redraw?

I don't have this problem in other situations where I set the currenttime of the player. It jumps to a new location and the movie display is updated. Is it because it is such a small increment?



on rawKeyDown theKeyNumber
if theKeyNumber is 65308 then stepforward -- mouse wheel down
else if theKeyNumber is 65309 then stepbackward -- mouse wheel up
else pass rawKeyDown
end rawKeyDown


on stepforward
set the currenttime of me to (the currenttime of me) + ((the timescale of me / 4))
end stepforward

on stepbackward
set the currenttime of me to (the currenttime of me) - ((the timescale of me / 4))
end stepbackward

Martin Koob

Hi Martin,

Try changing your code to this:

locking/unlocking the screen worked on my end. Also adding round() to the calculation is necessary for movies that don't have a timescale of 600 (mp4 and mpg for example).