const QVector<int> Q3PlotAxis::tickPositions() const
{
QVector<int> tickPositions(ticks_.count());
for (int i = 0; i < ticks_.count(); ++i) {
tickPositions[i] = coordinateToPixel(ticks_[i]);
}
return tickPositions;
}
void Q3PlotAxis::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
QPainter painter;
painter.begin(this);
painter.setPen(Qt::white);
QFontMetrics fm(font());
QVector<int> tp = tickPositions();
int margin = Q3PlotFrameContainer::Margin;
switch (position_) {
case Q3PlotFrame::PositionLeft:
if (labelsVisible_) {
for (int i = 0; i < ticks_.count(); ++i) {
if (tp[i] + margin - fm.height() / 3. < 0
|| tp[i] + margin + fm.height() / 3. > height()) {
continue;
}
painter.drawText(QPointF(width() - margin - fm.width(labels_[i]) - 1,
tp[i] + margin + fm.height() / 3),
labels_[i]);
}
}
break;
case Q3PlotFrame::PositionTop:
if (labelsVisible_) {
for (int i = 0; i < ticks_.count(); ++i) {
if (tp[i] + margin - fm.width(labels_[i]) / 2 < 0
|| tp[i] + margin + fm.width(labels_[i]) / 2 > width()) {
continue;
}
painter.drawText(QPointF(tp[i] + margin - fm.width(labels_[i]) / 2,
height() - margin - 1), labels_[i]);
}
}
break;
case Q3PlotFrame::PositionRight:
if (labelsVisible_) {
for (int i = 0; i < ticks_.count(); ++i) {
if (tp[i] + margin - fm.height() / 3. < 0
|| tp[i] + margin + fm.height() / 3. > height()) {
continue;
}
painter.drawText(QPointF(margin, tp[i] + margin + fm.height() / 3),
labels_[i]);
}
}
break;
case Q3PlotFrame::PositionBottom:
if (labelsVisible_) {
for (int i = 0; i < ticks_.count(); ++i) {
if (tp[i] + margin - fm.width(labels_[i]) / 2 < 0
|| tp[i] + margin + fm.width(labels_[i]) / 2 > width()) {
continue;
}
painter.drawText(QPointF(tp[i] + margin - fm.width(labels_[i]) / 2,
margin + 2. / 3. * fm.height()), labels_[i]);
}
}
break;
}
painter.end();
}
double MSLabelOut::tickPosition(unsigned index_) const
{
int len=tickPositions().length();
return tickPositions()(index_<len?index_:index_%len);
}
