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Scroll by page if Shift Key is pressed

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If shift key is pressed along with scroll, scroll up/down by whole page.

REVIEW: 123596
This commit is contained in:
Ashish Bansal 2015-05-06 15:47:18 +05:30
parent c1a2c0f1a7
commit 1fe148805d
1 changed files with 12 additions and 2 deletions
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14
src/kitemviews/kitemlistcontainer.cpp
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@ -186,11 +186,21 @@ void KItemListContainer::wheelEvent(QWheelEvent* event)
const QScrollBar* scrollBar = smoothScroller->scrollBar();
if (!event->pixelDelta().isNull()) {
const int numPixels = event->pixelDelta().y();
smoothScroller->scrollTo(scrollBar->value() - numPixels);
if (event->modifiers().testFlag(Qt::ShiftModifier)) {
const int scrollingDirection = numPixels > 0 ? 1 : -1;
smoothScroller->scrollTo(scrollBar->value() - scrollBar->pageStep() * scrollingDirection);
} else {
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);
if (event->modifiers().testFlag(Qt::ShiftModifier)) {
const int scrollingDirection = numSteps > 0 ? 1 : -1;
smoothScroller->scrollTo(scrollBar->value() - scrollBar->pageStep() * scrollingDirection);
} else {
smoothScroller->scrollTo(scrollBar->value() - numSteps * scrollBar->pageStep() / 4);
}
}
event->accept();