X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=pv%2Fview%2Fviewport.cpp;h=96111875570ee7e53bf0e9773285686acb01e8a8;hb=8d44d030c3923055f2ea81d5334d3a3bce7900c2;hp=c1490fc82725c2ab739ebab53e3a5af79f558f6c;hpb=51e77110d4316fd0106f8306f5e1f0523c5bf7d7;p=pulseview.git

diff --git a/pv/view/viewport.cpp b/pv/view/viewport.cpp
index c1490fc8..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)
@@ -61,21 +64,24 @@ void Viewport::paintEvent(QPaintEvent *event)
 		_view.session().get_signals();
 
 	QPainter p(this);
+	p.setRenderHint(QPainter::Antialiasing);
+
+	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);
+
 	p.end();
 }
 
@@ -111,5 +117,38 @@ void Viewport::wheelEvent(QWheelEvent *event)
 	_view.zoom(event->delta() / 120, event->x());
 }
 
+void Viewport::draw_cursors_background(QPainter &p)
+{
+	if(!_view.cursors_shown())
+		return;
+
+	p.setPen(Qt::NoPen);
+	p.setBrush(QBrush(View::CursorAreaColour));
+
+	const pair<Cursor, Cursor> &c = _view.cursors();
+	const float x1 = (c.first.time() - _view.offset()) / _view.scale();
+	const float x2 = (c.second.time() - _view.offset()) / _view.scale();
+	const int l = (int)max(min(x1, x2), 0.0f);
+	const int r = (int)min(max(x1, x2), (float)width());
+
+	p.drawRect(l, 0, r - l, height());
+}
+
+void Viewport::draw_cursors_foreground(QPainter &p)
+{
+	if(!_view.cursors_shown())
+		return;
+
+	const QRect r = rect();
+	pair<Cursor, Cursor> &cursors = _view.cursors();
+	cursors.first.paint(p, r);
+	cursors.second.paint(p, r);
+}
+
+void Viewport::on_signals_moved()
+{
+	update();
+}
+
 } // namespace view
 } // namespace pv