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Commit 8b11365c authored by Huon Imberger's avatar Huon Imberger

Fix scrolling with touchpad when in Image view and mouse wheel behaviour set to Browse

Summary:
Similar to zooming using Ctrl+touchpad two-finger scroll, using touchpad scrolling
in image view when mouse wheel behaviour is set to Browse, browsing images is way
too fast.
This implements the same fix in {D7744} for this case.

BUG: 388353

Test Plan:
  # Settings > Image View > Mouse wheel behaviour = Browse
  # Open folder with a bunch of images, switch to Image view
  # Enable thumbnail bar
  # With mouse over image, scroll with the touchpad

Reviewers: #gwenview, ngraham, rkflx

Reviewed By: #gwenview, ngraham, rkflx

Subscribers: mart

Differential Revision: https://phabricator.kde.org/D11200
parent 0a01215f
......@@ -594,11 +594,14 @@ void DocumentView::wheelEvent(QGraphicsSceneWheelEvent* event)
}
if (GwenviewConfig::mouseWheelBehavior() == MouseWheelBehavior::Browse
&& event->modifiers() == Qt::NoModifier) {
d->controlWheelAccumulatedDelta += event->delta();
// Browse with mouse wheel
if (event->delta() > 0) {
if (d->controlWheelAccumulatedDelta >= QWheelEvent::DefaultDeltasPerStep) {
previousImageRequested();
} else {
d->controlWheelAccumulatedDelta = 0;
} else if (d->controlWheelAccumulatedDelta <= -QWheelEvent::DefaultDeltasPerStep) {
nextImageRequested();
d->controlWheelAccumulatedDelta = 0;
}
return;
}
......
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