diff options
Diffstat (limited to 'src/gui/kernel/qapplication_mac.mm')
| -rw-r--r-- | src/gui/kernel/qapplication_mac.mm | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/src/gui/kernel/qapplication_mac.mm b/src/gui/kernel/qapplication_mac.mm index a95ae9d..f9c8aa3 100644 --- a/src/gui/kernel/qapplication_mac.mm +++ b/src/gui/kernel/qapplication_mac.mm @@ -1708,12 +1708,30 @@ QApplicationPrivate::globalEventProcessor(EventHandlerCallRef er, EventRef event sizeof(axis), 0, &axis); // The 'new' event has acceleration applied by the OS, while the old (on - // Carbon only), has not. So we introduce acceleration here to be consistent: - int scrollFactor = 120 * qMin(5, qAbs(mdelt)); + // Carbon only), has not. So we introduce acceleration here to be consistent. + // The acceleration is trying to respect both pixel based and line scrolling, + // which turns out to be rather difficult. + int linesToScroll = mdelt > 0 ? 1 : -1; + static QTime t; + int elapsed = t.elapsed(); + t.restart(); + if (elapsed < 20) + linesToScroll *= 120; + else if (elapsed < 30) + linesToScroll *= 60; + else if (elapsed < 50) + linesToScroll *= 30; + else if (elapsed < 100) + linesToScroll *= 6; + else if (elapsed < 200) + linesToScroll *= 3; + else if (elapsed < 300) + linesToScroll *= 2; + if (axis == kEventMouseWheelAxisX) - wheel_deltaX = mdelt * scrollFactor; + wheel_deltaX = linesToScroll * 120; else - wheel_deltaY = mdelt * scrollFactor; + wheel_deltaY = linesToScroll * 120; } } |