X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fsignal.cpp;h=091dd8d4406ef62dfc56b325c96f770890342323;hp=1a11cfeec1909d39c7a2ffeca54c24b91899dc80;hb=ed6f0f4f84a26aadacfd4d3a745a8d7f1094efc5;hpb=3b258424833cc681b7f3a0571a00dcc42df6192f

diff --git a/pv/signal.cpp b/pv/signal.cpp
index 1a11cfee..091dd8d4 100644
--- a/pv/signal.cpp
+++ b/pv/signal.cpp
@@ -25,6 +25,7 @@
 namespace pv {
 
 const QSizeF Signal::LabelPadding(4, 0);
+const int Signal::LabelHitPadding = 2;
 
 Signal::Signal(QString name) :
 	_name(name)
@@ -36,29 +37,15 @@ QString Signal::get_name() const
 	return _name;
 }
 
-QRectF Signal::get_label_rect(QPainter &p, const QRect &rect)
-{
-	const QSizeF text_size = p.boundingRect(
-		QRectF(0, 0, rect.width(), 0), 0, _name).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;
-	return QRectF(
-		rect.right() - label_arrow_length - label_size.width(),
-		nominal_offset - label_size.height() / 2,
-		label_size.width(), label_size.height());
-}
-
-void Signal::paint_label(QPainter &p, const QRect &rect)
+void Signal::paint_label(QPainter &p, const QRect &rect, bool hover)
 {
 	p.setBrush(get_colour());
 
 	const QColor colour = get_colour();
 	const float nominal_offset = get_nominal_offset(rect);
-	const QRectF label_rect = get_label_rect(p, rect);
+
+	compute_text_size(p);
+	const QRectF label_rect = get_label_rect(rect);
 
 	// Paint the label
 	const QPointF points[] = {
@@ -78,7 +65,7 @@ void Signal::paint_label(QPainter &p, const QRect &rect)
 	};
 
 	p.setPen(Qt::transparent);
-	p.setBrush(colour);
+	p.setBrush(hover ? colour.lighter() : colour);
 	p.drawPolygon(points, countof(points));
 
 	p.setPen(colour.lighter());
@@ -94,4 +81,33 @@ void Signal::paint_label(QPainter &p, const QRect &rect)
 	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