From 3b18c57d8f224791481e0b768065bd4d11a3d79e Mon Sep 17 00:00:00 2001
From: Joel Holdsworth <joel@airwebreathe.org.uk>
Date: Tue, 5 Jun 2012 11:20:06 +0100
Subject: [PATCH] Added view scale and offset

---
 logicsignal.cpp |  3 ++-
 logicsignal.h   | 11 ++++++++++-
 signal.h        | 11 ++++++++++-
 sigview.cpp     |  6 ++++--
 sigview.h       |  3 +++
 5 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/logicsignal.cpp b/logicsignal.cpp
index 7a86b7c..09a65af 100644
--- a/logicsignal.cpp
+++ b/logicsignal.cpp
@@ -28,7 +28,8 @@ LogicSignal::LogicSignal(QString name, boost::shared_ptr<SignalData> data,
 	assert(_probe_index >= 0);
 }
 
-void LogicSignal::paint(QGLWidget &widget, const QRect &rect)
+void LogicSignal::paint(QGLWidget &widget, const QRect &rect,
+	uint64_t scale, int64_t offset)
 {
 	glColor3f(1,0,0);
 	glBegin(GL_POLYGON);
diff --git a/logicsignal.h b/logicsignal.h
index 91c70ab..28c8247 100644
--- a/logicsignal.h
+++ b/logicsignal.h
@@ -30,7 +30,16 @@ public:
 	LogicSignal(QString name, boost::shared_ptr<SignalData> data,
 		int probe_index);
 
-	void paint(QGLWidget &widget, const QRect &rect);
+	/**
+	 * Paints the signal into a QGLWidget.
+	 * @param widget the QGLWidget to paint into.
+	 * @param rect the rectangular area to draw the trace into.
+	 * @param scale the scale in femtoseconds per pixel.
+	 * @param offset the time to show at the left hand edge of
+	 *   the view in femtoseconds.
+	 **/
+	void paint(QGLWidget &widget, const QRect &rect, uint64_t scale,
+		int64_t offset);
 
 private:
 	int _probe_index;
diff --git a/signal.h b/signal.h
index ee051dc..2cec129 100644
--- a/signal.h
+++ b/signal.h
@@ -36,7 +36,16 @@ protected:
 public:
 	QString get_name() const;
 
-	virtual void paint(QGLWidget &widget, const QRect &rect) = 0;
+	/**
+	 * Paints the signal into a QGLWidget.
+	 * @param widget the QGLWidget to paint into.
+	 * @param rect the rectangular area to draw the trace into.
+	 * @param scale the scale in femtoseconds per pixel.
+	 * @param offset the time to show at the left hand edge of
+	 *   the view in femtoseconds.
+	 **/
+	virtual void paint(QGLWidget &widget, const QRect &rect,
+		uint64_t scale, int64_t offset) = 0;
 
 protected:
 	QString _name;
diff --git a/sigview.cpp b/sigview.cpp
index 565e67e..53fbdea 100644
--- a/sigview.cpp
+++ b/sigview.cpp
@@ -32,7 +32,9 @@ const int SigView::SignalHeight = 50;
 
 SigView::SigView(SigSession &session, QWidget *parent) :
 	QGLWidget(parent),
-        _session(session)
+        _session(session),
+	_scale(1000000000ULL),
+	_offset(0)
 {
 	connect(&_session, SIGNAL(dataUpdated()),
 		this, SLOT(dataUpdated()));
@@ -70,7 +72,7 @@ void SigView::paintGL()
 	BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
 	{
 		assert(s);
-		s->paint(*this, rect);
+		s->paint(*this, rect, _scale, _offset);
 		rect.translate(0, SignalHeight);
 	}
 }
diff --git a/sigview.h b/sigview.h
index b43ae9a..2c7ba1d 100644
--- a/sigview.h
+++ b/sigview.h
@@ -49,6 +49,9 @@ private slots:
 
 private:
 	SigSession &_session;
+
+	uint64_t _scale;
+	int64_t _offset;
 };
 
 #endif // SIGVIEW_H
-- 
2.30.2