SplitView: fix resized item jumping in size when an item is hiddenHEADdev

The logic that handles the item to the left of the handle being resized
incorrectly used a hidden handle as the leftEdge. This would cause the
item to get more space than it should because it thought it had more
space to consume.

Before the fix, leftEdge is 10 and accumulated is 0, so:

    //          390         400    0             10
    const qreal rightStop = size - accumulated - pressedHandleSize;

    //    110             10        110
    qreal leftStop = qMax(leftEdge, pressedHandlePos);

    //          110                   110       110               390
    const qreal newHandlePos = qBound(leftStop, pressedHandlePos, rightStop);

    //          100           110            10
    const qreal newItemSize = newHandlePos - leftEdge;

After the fix, leftEdge is 60 and accumulated is 0, so:

    //          390         400    0             10
    const qreal rightStop = size - accumulated - pressedHandleSize;

    //    110             60        110
    qreal leftStop = qMax(leftEdge, pressedHandlePos);

    //          110                   110       110               390
    const qreal newHandlePos = qBound(leftStop, pressedHandlePos, rightStop);

    //          50            110            60
    const qreal newItemSize = newHandlePos - leftEdge;

Fixes: QTBUG-125049
Pick-to: 6.5 6.7
Change-Id: I3cdf57693c71c1f367780eda0ff6794fea02d546
Reviewed-by: Kaj Grönholm <kaj.gronholm@qt.io>

0 files changed, 0 insertions, 0 deletions