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Fix potential crash at startup

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Strangely enough, on the system I build this, I don't see the crash. But
when I create a DMG and run it on a different Mac, it crashes if
updateTicks() is called but scene() still returns 0.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2014-01-25 07:25:03 -08:00
parent c4c7d85fb5
commit f4a2ce1017
1 changed files with 2 additions and 1 deletions
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3
qt-ui/profile/divecartesianaxis.cpp
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@ -56,6 +56,8 @@ QColor DiveCartesianAxis::colorForValue(double value)
void DiveCartesianAxis::updateTicks() void DiveCartesianAxis::updateTicks()
{ {
if (!scene())
return;
QLineF m = line(); QLineF m = line();
// unused so far: // unused so far:
// QGraphicsView *view = scene()->views().first(); // QGraphicsView *view = scene()->views().first();
@ -124,7 +126,6 @@ void DiveCartesianAxis::updateTicks()
} }
labels.push_back(label); labels.push_back(label);
if (orientation == RightToLeft || orientation == LeftToRight) { if (orientation == RightToLeft || orientation == LeftToRight) {
if(showText){ if(showText){
label->setAlignment(Qt::AlignBottom | Qt::AlignHCenter); label->setAlignment(Qt::AlignBottom | Qt::AlignHCenter);
label->setPos(scene()->sceneRect().width() + 10, m.y1() + tickSize); // position it outside of the scene); label->setPos(scene()->sceneRect().width() + 10, m.y1() + tickSize); // position it outside of the scene);