Implement set_range and set_step for Slider

[libs/gltk.git] / source / slider.cpp

diff --git a/source/slider.cpp b/source/slider.cpp
index e7f67c111016cd87b3eb348883e4788292b1bb97..11e4c24dc6461c0c49910b030ee18a7a6240a00d 100644 (file)
--- a/source/slider.cpp
+++ b/source/slider.cpp
@@ -9,11 +9,25 @@ Slider::Slider(const Resources &r):
        max(1),
        value(0),
        step(0.1)
+{ }
+
+void Slider::set_range(double a, double b)
+{
+       min=a;
+       max=b;
+       set_value(value);
+}
+
+void Slider::set_step(double s)
 {
+       step=s;
+       set_value(value);
 }
 
 void Slider::set_value(double v)
 {
+       double old_value=value;
+
        if(v<min)
                value=min;
        else if(v>max)
@@ -23,6 +37,9 @@ void Slider::set_value(double v)
                unsigned steps=static_cast<unsigned>((v-min)/step+0.5);
                value=min+steps*step;
        }
+
+       if(value!=old_value)
+               signal_value_changed.emit(value);
 }
 
 } // namespace GLtk