X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=signal.h;h=edab476deb7d31c22f0b16929c2221e82e05cb1a;hp=ee051dca62d315ebe307ea1d51ce520c4a5858b5;hb=ecda6ca9b83e5ed9988c64ed9fc4e4a33b8a5457;hpb=e3f65ace22c6bcd371967302f8d01d0769e3a23f

diff --git a/signal.h b/signal.h
index ee051dca..edab476d 100644
--- a/signal.h
+++ b/signal.h
@@ -21,6 +21,7 @@
 #include <boost/shared_ptr.hpp>
 
 #include <QGLWidget>
+#include <QPainter>
 #include <QRect>
 #include <QString>
 
@@ -30,15 +31,46 @@ class SignalData;
 
 class Signal
 {
+private:
+	static const QSizeF LabelPadding;
+
 protected:
-	Signal(QString name, boost::shared_ptr<SignalData> data);
+	Signal(QString name);
 
 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 seconds per pixel.
+	 * @param offset the time to show at the left hand edge of
+	 *   the view in seconds.
+	 **/
+	virtual void paint(QGLWidget &widget, const QRect &rect,
+		double scale, double offset) = 0;
+
+	/**
+	 * Paints the signal label into a QGLWidget.
+	 * @param p the QPainter to paint into.
+	 * @param rect the rectangular area to draw the label into.
+	 */
+	virtual void paint_label(QPainter &p, const QRect &rect);
+
+protected:
+
+	/**
+	 * Get the colour of the logic signal
+	 */
+	virtual QColor get_colour() const = 0;
+
+	/**
+	 * When painting into the rectangle, calculate the y
+	 * offset of the zero point.
+	 **/
+	virtual int get_nominal_offset(const QRect &rect) const = 0;
 
 protected:
 	QString _name;
-	boost::shared_ptr<SignalData> _data;
 };