X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fslider.cpp;h=ead5664a303fae8e88ac26c9e0967629a5b02ceb;hb=3f301f9b6f73e886bdbb61565edb2c02667039d0;hp=0b1d8b066ee2e992644d9cc0254dc672a6ac8db5;hpb=8f6f543758fb1b2b17ae2db519198d420eb9982d;p=libs%2Fgltk.git

diff --git a/source/slider.cpp b/source/slider.cpp
index 0b1d8b0..ead5664 100644
--- a/source/slider.cpp
+++ b/source/slider.cpp
@@ -15,7 +15,9 @@ Slider::Slider(const Resources &r):
 	min(0),
 	max(1),
 	value(0),
-	step(0.1)
+	step(0.1),
+	dragging(false),
+	drag_area_size(0)
 { }
 
 void Slider::set_value(double v)
@@ -49,6 +51,26 @@ void Slider::set_step(double s)
 	set_value(value);
 }
 
+void Slider::start_drag(int p)
+{
+	dragging=true;
+	drag_start_pos=p;
+	drag_start_value=value;
+	state|=ACTIVE;
+}
+
+void Slider::drag(int p)
+{
+	if(max>min)
+		set_value(drag_start_value+(p-drag_start_pos)*(max-min)/drag_area_size);
+}
+
+void Slider::end_drag()
+{
+	dragging=false;
+	state&=~ACTIVE;
+}
+
 
 Slider::Loader::Loader(Slider &s):
 	Widget::Loader(s)