X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fviewport.cpp;h=96111875570ee7e53bf0e9773285686acb01e8a8;hp=2dcf9dc78f83ac740b3d3051d639ee8caa88c288;hb=0720481923d46cde06148c8a4aec2f96def66643;hpb=f76af6375b8aea6b7edb2d6ee838e1589c3490f3

diff --git a/pv/view/viewport.cpp b/pv/view/viewport.cpp
index 2dcf9dc7..96111875 100644
--- a/pv/view/viewport.cpp
+++ b/pv/view/viewport.cpp
@@ -21,8 +21,8 @@
 #include "view.h"
 #include "viewport.h"
 
+#include "signal.h"
 #include "../sigsession.h"
-#include "../signal.h"
 
 #include <QMouseEvent>
 
@@ -41,18 +41,21 @@ Viewport::Viewport(View &parent) :
 	setMouseTracking(true);
 	setAutoFillBackground(true);
 	setBackgroundRole(QPalette::Base);
+
+	connect(&_view, SIGNAL(signals_moved()),
+		this, SLOT(on_signals_moved()));
 }
 
 int Viewport::get_total_height() const
 {
-	int height = 0;
+	int h = 0;
 	BOOST_FOREACH(const shared_ptr<Signal> s,
 		_view.session().get_signals()) {
 		assert(s);
-		height += View::SignalHeight;
+		h = max(s->get_v_offset() + View::SignalHeight, h);
 	}
 
-	return height;
+	return h;
 }
 
 void Viewport::paintEvent(QPaintEvent *event)
@@ -66,17 +69,15 @@ void Viewport::paintEvent(QPaintEvent *event)
 	draw_cursors_background(p);
 
 	// Plot the signal
-	int offset = -_view.v_offset();
+	const int v_offset = _view.v_offset();
 	BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
 	{
 		assert(s);
 
-		const QRect signal_rect(0, offset,
+		const QRect signal_rect(0, s->get_v_offset() - v_offset,
 			width(), View::SignalHeight);
 
 		s->paint(p, signal_rect, _view.scale(), _view.offset());
-
-		offset += View::SignalHeight;
 	}
 
 	draw_cursors_foreground(p);
@@ -144,5 +145,10 @@ void Viewport::draw_cursors_foreground(QPainter &p)
 	cursors.second.paint(p, r);
 }
 
+void Viewport::on_signals_moved()
+{
+	update();
+}
+
 } // namespace view
 } // namespace pv