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fix smooth scrolling on macOS #7904

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merged 2 commits into from
Jan 31, 2021
Merged

fix smooth scrolling on macOS #7904

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c3e5f02
fix smooth scrolling on macOS
lhietal Jan 17, 2021
c9fb587
Change scrolling speed on macOS
lhietal Jan 30, 2021
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5 changes: 5 additions & 0 deletions src/gui/gtk.c
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Original file line number Diff line number Diff line change
Expand Up @@ -654,8 +654,13 @@ gboolean dt_gui_get_scroll_unit_deltas(const GdkEventScroll *event, int *delta_x
// accumulate trackpad/touch scrolls until they make a unit
// scroll, and only then tell caller that there is a scroll to
// handle
#ifdef GDK_WINDOWING_QUARTZ // on macOS deltas need to be scaled
acc_x += event->delta_x / 50;
acc_y += event->delta_y / 50;
#else
acc_x += event->delta_x;
acc_y += event->delta_y;
#endif
const gdouble amt_x = trunc(acc_x);
const gdouble amt_y = trunc(acc_y);
if(amt_x != 0 || amt_y != 0)
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