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Remove only the Uneeded Ticks / Labels when a update is requested.

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This patch makes the updateTicks method not remove / readd everything
when it's triggered, but to only remove the ticks / labels that
are no longer needed on the current display.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Tomaz Canabrava 2014-01-14 16:22:53 -02:00 • committed by Dirk Hohndel
parent 49f4052c67
commit ca979044d0
1 changed files with 8 additions and 38 deletions
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46
qt-ui/profile/divecartesianaxis.cpp
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@ -44,48 +44,18 @@ void DiveCartesianAxis::setOrientation(Qt::Orientation o)
void DiveCartesianAxis::updateTicks()
{
qDeleteAll(ticks);
ticks.clear();
qDeleteAll(labels);
labels.clear();
QLineF m = line();
DiveLineItem *item = NULL;
DiveTextItem *label = NULL;
QGraphicsView *view = scene()->views().first();
double steps = (max - min) / interval;
qreal pos;
double currValue = min;
if (orientation == Qt::Horizontal) {
double stepSize = (m.x2() - m.x1()) / steps;
for (pos = m.x1(); pos <= m.x2(); pos += stepSize, currValue += interval) {
item = new DiveLineItem(this);
item->setLine(pos, m.y1(), pos, m.y1() + tickSize);
item->setPen(pen());
ticks.push_back(item);
label = new DiveTextItem(this);
label->setText(QString::number(currValue));
label->setBrush(QBrush(textColor));
label->setFlag(ItemIgnoresTransformations);
label->setPos(pos - label->boundingRect().width()/2, m.y1() + tickSize + 5);
labels.push_back(label);
}
} else {
double stepSize = (m.y2() - m.y1()) / steps;
for (pos = m.y1(); pos <= m.y2(); pos += stepSize, currValue += interval) {
item = new DiveLineItem(this);
item->setLine(m.x1(), pos, m.x1() - tickSize, pos);
item->setPen(pen());
ticks.push_back(item);
label = new DiveTextItem(this);
label->setText(get_depth_string(currValue, false, false));
label->setBrush(QBrush(textColor));
label->setFlag(ItemIgnoresTransformations);
label->setPos(m.x2() - 80, pos);
labels.push_back(label);
// Remove the uneeded Ticks / Texts.
if (ticks.size() > steps){
while (ticks.size() > steps){
DiveLineItem *removedLine = ticks.takeLast();
removedLine->animatedHide();
DiveTextItem *removedText = labels.takeLast();
removedText->animatedHide();
}
}
}