Split signal painting into 3 layers

[pulseview.git] / pv / view / trace.cpp

diff --git a/pv/view/trace.cpp b/pv/view/trace.cpp
index 6c43c4c2238044c572fbe0edc4e7343449c06ba7..ff1fbddbcb5305185ec1abba301cc5e3857b7c19 100644 (file)
--- a/pv/view/trace.cpp
+++ b/pv/view/trace.cpp
@@ -29,6 +29,7 @@
 namespace pv {
 namespace view {
 
+const QPen Trace::AxisPen(QColor(128, 128, 128, 64));
 const int Trace::LabelHitPadding = 2;
 
 Trace::Trace(pv::SigSession &session, QString name) :
@@ -74,6 +75,27 @@ void Trace::set_view(pv::view::View *view)
        _view = view;
 }
 
+void Trace::paint_back(QPainter &p, int left, int right)
+{
+       (void)p;
+       (void)left;
+       (void)right;
+}
+
+void Trace::paint_mid(QPainter &p, int left, int right)
+{
+       (void)p;
+       (void)left;
+       (void)right;
+}
+
+void Trace::paint_fore(QPainter &p, int left, int right)
+{
+       (void)p;
+       (void)left;
+       (void)right;
+}
+
 void Trace::paint_label(QPainter &p, int right, bool hover)
 {
        assert(_view);
@@ -141,6 +163,17 @@ bool Trace::pt_in_label_rect(int left, int right, const QPoint &point)
                        ).contains(point);
 }
 
+int Trace::get_y() const
+{
+       return _v_offset - _view->v_offset();
+}
+
+void Trace::paint_axis(QPainter &p, int y, int left, int right)
+{
+       p.setPen(AxisPen);
+       p.drawLine(QPointF(left, y + 0.5f), QPointF(right, y + 0.5f));
+}
+
 void Trace::compute_text_size(QPainter &p)
 {
        _text_size = QSize(