spline: minor cleanup

1 files changed, 2 insertions, 3 deletions

diff --git a/spline/spline-widget.hpp b/spline/spline-widget.hpp
index 062db493..711bdb2a 100644
--- a/spline/spline-widget.hpp
+++ b/spline/spline-widget.hpp
@@ -40,7 +40,6 @@ public:
     spline_widget(QWidget *parent = 0);
     ~spline_widget();
 
-    spline* config();
     void setConfig(spline* spl);
 
     QColor colorBezier() const;
@@ -52,8 +51,8 @@ public:
 
     double x_step() { return _x_step; }
     double y_step() { return _y_step; }
-    void set_x_step(double val) { _x_step = val; }
-    void set_y_step(double val) { _y_step = val; }
+    void set_x_step(double val) { _x_step = std::fmax(1., val); }
+    void set_y_step(double val) { _y_step = std::fmax(1., val); }
 
     void set_snap(double x, double y) { snap_x = x; snap_y = y; }
     void get_snap(double& x, double& y) const { x = snap_x; y = snap_y; }