GitLab

When performing a scroll operation, the previous version of the module
would send all the scroll requests at once, causing the target to
instantly jump to the new position. This new version will split the
operation multiple chunks (with calls to Wimp_Poll / Wimp_PollIdle
inbetween), which allows for:

1. The scroll speed/scale factor to be applied when normal "scroll" wimp
messages are used (i.e. "line scroll" option is enabled). This was
effectively impossible to support in the previous version, because it
requires the module to send a scroll request to the target task, wait
for the target to have acted on it (i.e. wait for the next null poll),
and then read the window state to determine how far it scrolled (so that
future scroll requests can use that value to judge how many scroll
requests must be sent to get the desired motion)

2. Smooth (ish) scrolling for all scroll methods. Currently the code
will attempt to scroll by one half of the remaining distance, per
centisecond. This is enough for the motion to be visible to the user,
while still fast enough to keep the desktop responsive.

Version 0.02. Tagged as 'WindowScroll-0_02'

A BSD-licensed clone of RISCOS Ltd's WindowScroll module, based on the
documentation at
http://www.riscos.com/support/developers/riscos6/input/windowscroll.html

Currently it's a bit basic - future improvements could include:

* Have the "Speed" setting affect line scroll mode (read back the new
window position and estimate how much further we can scroll it before
overshooting - difficult because the scroll/redraw events are buffered
by the Wimp)
* Momentum/acceleration to ease scrolling long distances

Version 0.01. Tagged as 'WindowScroll-0_01'