X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Ftrace.cpp;h=ee0a4f0e921630b986a090bbdca494fb3849010f;hp=05054d4927001c260d271d713ba88bbc14433029;hb=086f4df565d8e70328f3c4bbc92949e0817dc6d4;hpb=99af6802961b0a5ec7ec7d3ff2215c8eb6925ca3

diff --git a/pv/view/trace.cpp b/pv/view/trace.cpp
index 05054d49..ee0a4f0e 100644
--- a/pv/view/trace.cpp
+++ b/pv/view/trace.cpp
@@ -41,8 +41,12 @@ namespace view {
 const QPen Trace::AxisPen(QColor(128, 128, 128, 64));
 const int Trace::LabelHitPadding = 2;
 
+const QColor Trace::DarkBGColour(235, 235, 235);    // Quite light grey
+const QColor Trace::BrightBGColour(245, 245, 245);  // Very light grey
+
 Trace::Trace(QString name) :
 	name_(name),
+	coloured_bg_(true), // Default setting is set in MainWindow::setup_ui()
 	popup_(nullptr),
 	popup_form_(nullptr)
 {
@@ -71,6 +75,32 @@ void Trace::set_colour(QColor colour)
 	bgcolour_.setAlpha(20);
 }
 
+void Trace::set_coloured_bg(bool state)
+{
+	coloured_bg_ = state;
+}
+
+bool Trace::is_draggable() const
+{
+	const View *const view = owner_->view();
+	assert(view);
+
+	QPoint cursor_pos = view->mapFromGlobal(QCursor::pos());
+
+	// The signal is draggable only in the header area
+	return (cursor_pos.x() <= view->header_size().width());
+}
+
+void Trace::select(bool select)
+{
+	// Trace can only be selected if the mouse cursor is in the header area;
+	// as is_draggable() checks the same thing, we re-use it here
+	if (is_draggable() && select)
+		selected_ = true;
+	else
+		selected_ = false;
+}
+
 void Trace::paint_label(QPainter &p, const QRect &rect, bool hover)
 {
 	const int y = get_visual_y();
@@ -175,8 +205,12 @@ QRectF Trace::hit_box_rect(const ViewItemPaintParams &pp) const
 
 void Trace::paint_back(QPainter &p, const ViewItemPaintParams &pp)
 {
+	if (coloured_bg_)
+		p.setBrush(bgcolour_);
+	else
+		p.setBrush(bgcolour_state_ ? BrightBGColour : DarkBGColour);
+
 	p.setPen(QPen(Qt::NoPen));
-	p.setBrush(bgcolour_);
 
 	const std::pair<int, int> extents = v_extents();