X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fslider.cpp;h=7123458c0e41b7268ce44b7c556543dfd2af9aa1;hb=a778810b6fa6feff8aff06bdf632623e7923537a;hp=11e4c24dc6461c0c49910b030ee18a7a6240a00d;hpb=bcdbb414c5f1abe860cad6bb67fd5da7c0122cfd;p=libs%2Fgltk.git

diff --git a/source/slider.cpp b/source/slider.cpp
index 11e4c24..7123458 100644
--- a/source/slider.cpp
+++ b/source/slider.cpp
@@ -3,43 +3,76 @@
 namespace Msp {
 namespace GLtk {
 
-Slider::Slider(const Resources &r):
-	Widget(r),
+Slider::Slider():
 	min(0),
 	max(1),
 	value(0),
-	step(0.1)
+	step(0.1),
+	dragging(false),
+	drag_area_size(0)
 { }
 
+void Slider::set_value(double v)
+{
+	double old_value = value;
+
+	if(v<min)
+		value = min;
+	else if(v>max)
+		value = max;
+	else
+	{
+		unsigned steps = static_cast<unsigned>((v-min)/step+0.5);
+		value = min+steps*step;
+	}
+
+	if(value!=old_value)
+	{
+		signal_value_changed.emit(value);
+		rebuild();
+	}
+}
+
 void Slider::set_range(double a, double b)
 {
-	min=a;
-	max=b;
+	min = a;
+	max = b;
 	set_value(value);
 }
 
 void Slider::set_step(double s)
 {
-	step=s;
+	step = s;
 	set_value(value);
 }
 
-void Slider::set_value(double v)
+void Slider::start_drag(int p)
 {
-	double old_value=value;
+	dragging = true;
+	drag_start_pos = p;
+	drag_start_value = value;
+	set_state(ACTIVE);
+}
 
-	if(v<min)
-		value=min;
-	else if(v>max)
-		value=max;
-	else
-	{
-		unsigned steps=static_cast<unsigned>((v-min)/step+0.5);
-		value=min+steps*step;
-	}
+void Slider::drag(int p)
+{
+	if(max>min)
+		set_value(drag_start_value+(p-drag_start_pos)*(max-min)/drag_area_size);
+}
 
-	if(value!=old_value)
-		signal_value_changed.emit(value);
+void Slider::end_drag()
+{
+	dragging = false;
+	clear_state(ACTIVE);
+}
+
+
+Slider::Loader::Loader(Slider &s):
+	DataFile::DerivedObjectLoader<Slider, Widget::Loader>(s)
+{
+	add("range", &Slider::min, &Slider::max);
+	add("step",  &Slider::step);
+	add("value", &Slider::value);
 }
 
 } // namespace GLtk