Skip to content

fix: fix wx scrolling #190

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
almarklein merged 3 commits into from
Mar 12, 2026
Merged

fix: fix wx scrolling #190

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
c4f8597
fix: fix wx scrolling
tlambert03 Mar 9, 2026
75f920f
Even simpler
almarklein Mar 12, 2026
677f181
lint
almarklein Mar 12, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
13 changes: 10 additions & 3 deletions rendercanvas/wx.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -458,17 +458,24 @@ def _mouse_event(self, event_type: str, event: wx.MouseEvent, touches: bool = Tr
)

if event_type == "wheel":
delta = event.GetWheelDelta()
axis = event.GetWheelAxis()
rotation = event.GetWheelRotation()

# This is a little magic... it aims to match the scroll speed the Qt
# backend in a cross-platform way... It looks like just using the
# rotation produces a similar scroll experience, except it's rather
# slow/sluggish on MacOS for some reason, so we use a multiplier to
# correct that. Note that the non-linear scrolling on MacOS means
# that the exact gain does not even matter so much ...
gain = 2 if sys.platform == "darwin" else 1

dx = 0
dy = 0

if axis == wx.MOUSE_WHEEL_HORIZONTAL:
dx = delta * rotation
dx = gain * rotation
elif axis == wx.MOUSE_WHEEL_VERTICAL:
dy = delta * rotation
dy = gain * rotation

ev.update({"dx": -dx, "dy": -dy})

Expand Down
Loading