Robert van der Kamp <[EMAIL PROTECTED]> writes:
| Hi Lyxers!
|
| Back on the list again (after aprox. 3 years).
| Downloaded lyx 1.0.3. I can see you've been quite busy.
| For the moment I don't have concrete developing plans with Lyx,
| I'll just watch this list for a while...
|
| Anyway, here's a small patch for BufferView.C, method
| BufferView::WorkAreaButtonPress(), line 986, where buttons
| 4 and 5 (the scroll wheel) are handled. Added acceleration support:
| the faster the wheel is turned, the faster the screen is scrolled.
| Something I also added to Xemacs, works really nice.
I used your patch and did it slightly different. My way seems much
more responsive.
// I am not quite sure if this is the correct place to put
this,
// but it will not cause any harm.
// Patch from Mark Huang ([EMAIL PROTECTED]) to make LyX
recognise
// button 4 and 5. This enables LyX use use the scrollwhell on
// certain mice for something useful. (Lgb)
// Added wheel acceleration detection code. (Rvdk)
static Time lastTime = 0;
if (ev->xbutton.button == 5){
int diff = ev->xbutton.time - lastTime;
int scroll = int(1.0 + (4.0/(abs(diff)+1.0))*200.0);
ScrollUp(scroll);
lastTime = ev->xbutton.time;
return 0;
}
if (ev->xbutton.button == 4){
int diff = ev->xbutton.time - lastTime;
int scroll = int(1.0 + (4.0/(abs(diff)+1.0))*200.0);
ScrollDown(scroll);
lastTime = ev->xbutton.time;
return 0;
}
Note also that I reversed the scroll-wheel. Logically it was backwards.
(it is not a flight-stick you know ... )
I have no idea on how the "function" I use for scroll handles on other
systems. So comments are welcome.
Lgb
