From fb9c403518fc6f0996185eac00a7f15da2f586fc Mon Sep 17 00:00:00 2001 From: Kai Uwe Broulik Date: Mon, 30 Jun 2014 13:56:45 +0200 Subject: [PATCH] Add support for high-precision touchpad scrolling REVIEW: 119001 --- src/kitemviews/kitemlistcontainer.cpp | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/src/kitemviews/kitemlistcontainer.cpp b/src/kitemviews/kitemlistcontainer.cpp index 765b366d1a..5e45a1766e 100644 --- a/src/kitemviews/kitemlistcontainer.cpp +++ b/src/kitemviews/kitemlistcontainer.cpp @@ -185,11 +185,15 @@ void KItemListContainer::wheelEvent(QWheelEvent* event) KItemListSmoothScroller* smoothScroller = scrollHorizontally ? m_horizontalSmoothScroller : m_verticalSmoothScroller; - const int numDegrees = event->delta() / 8; - const int numSteps = numDegrees / 15; - const QScrollBar* scrollBar = smoothScroller->scrollBar(); - smoothScroller->scrollTo(scrollBar->value() - numSteps * scrollBar->pageStep() / 4); + if (!event->pixelDelta().isNull()) { + const int numPixels = event->pixelDelta().y(); + smoothScroller->scrollTo(scrollBar->value() - numPixels); + } else { + const int numDegrees = event->angleDelta().y() / 8; + const int numSteps = numDegrees / 15; + smoothScroller->scrollTo(scrollBar->value() - numSteps * scrollBar->pageStep() / 4); + } event->accept(); }