namespace pv {
const QSizeF Signal::LabelPadding(4, 0);
+const int Signal::LabelHitPadding = 2;
Signal::Signal(QString name) :
_name(name)
return _name;
}
-void Signal::paint_label(QPainter &p, const QRect &rect)
+void Signal::set_name(QString name)
+{
+ _name = name;
+}
+
+void Signal::paint_label(QPainter &p, const QRect &rect, bool hover)
{
p.setBrush(get_colour());
- const QString text(_name);
const QColor colour = get_colour();
-
- const QSizeF text_size = p.boundingRect(
- QRectF(0, 0, rect.width(), 0), 0, text).size();
-
const float nominal_offset = get_nominal_offset(rect);
- const QSizeF label_size(
- text_size.width() + LabelPadding.width() * 2,
- text_size.height() + LabelPadding.height() * 2);
- const float label_arrow_length = label_size.height() / 2;
- const QRectF label_rect(
- rect.right() - label_arrow_length - label_size.width(),
- nominal_offset - label_size.height() / 2,
- label_size.width(), label_size.height());
+
+ compute_text_size(p);
+ const QRectF label_rect = get_label_rect(rect);
// Paint the label
const QPointF points[] = {
};
p.setPen(Qt::transparent);
- p.setBrush(colour);
+ p.setBrush(hover ? colour.lighter() : colour);
p.drawPolygon(points, countof(points));
p.setPen(colour.lighter());
// Paint the text
p.setPen((colour.lightness() > 64) ? Qt::black : Qt::white);
- p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, text);
+ p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, _name);
+}
+
+bool Signal::pt_in_label_rect(const QRect &rect, const QPoint &point)
+{
+ const QRectF label = get_label_rect(rect);
+ return QRectF(
+ QPointF(label.left() - LabelHitPadding,
+ label.top() - LabelHitPadding),
+ QPointF(rect.right(),
+ label.bottom() + LabelHitPadding)
+ ).contains(point);
+}
+
+void Signal::compute_text_size(QPainter &p)
+{
+ _text_size = p.boundingRect(QRectF(), 0, _name).size();
+}
+
+QRectF Signal::get_label_rect(const QRect &rect)
+{
+ const float nominal_offset = get_nominal_offset(rect);
+ const QSizeF label_size(
+ _text_size.width() + LabelPadding.width() * 2,
+ _text_size.height() + LabelPadding.height() * 2);
+ const float label_arrow_length = label_size.height() / 2;
+ return QRectF(
+ rect.right() - label_arrow_length - label_size.width(),
+ nominal_offset - label_size.height() / 2,
+ label_size.width(), label_size.height());
}
} // namespace pv