Fix #719 by calculating the decoder trace height dynamically

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

diff --git a/pv/view/trace.cpp b/pv/view/trace.cpp
index f7bba9ff31506e5a5fa68abaacfe1fe3163e321e..ee0a4f0e921630b986a090bbdca494fb3849010f 100644 (file)
--- a/pv/view/trace.cpp
+++ b/pv/view/trace.cpp
@@ -80,6 +80,27 @@ void Trace::set_coloured_bg(bool state)
        coloured_bg_ = state;
 }
 
+bool Trace::is_draggable() const
+{
+       const View *const view = owner_->view();
+       assert(view);
+
+       QPoint cursor_pos = view->mapFromGlobal(QCursor::pos());
+
+       // The signal is draggable only in the header area
+       return (cursor_pos.x() <= view->header_size().width());
+}
+
+void Trace::select(bool select)
+{
+       // Trace can only be selected if the mouse cursor is in the header area;
+       // as is_draggable() checks the same thing, we re-use it here
+       if (is_draggable() && select)
+               selected_ = true;
+       else
+               selected_ = false;
+}
+
 void Trace::paint_label(QPainter &p, const QRect &rect, bool hover)
 {
        const int y = get_visual_y();