X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=signal.h;h=edab476deb7d31c22f0b16929c2221e82e05cb1a;hp=ac23a3fa214a81255855934d13cb2f64430e9b07;hb=0b02e0578cf750906b20848d98e73b21c23eda42;hpb=fb0d32cb540e2ae39d80f7eab02779fb965d9f46

diff --git a/signal.h b/signal.h
index ac23a3fa..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>
 
@@ -30,6 +31,9 @@ class SignalData;
 
 class Signal
 {
+private:
+	static const QSizeF LabelPadding;
+
 protected:
 	Signal(QString name);
 
@@ -47,6 +51,26 @@ public:
 	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;
 };