X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fslider.cpp;h=7123458c0e41b7268ce44b7c556543dfd2af9aa1;hb=754751fd474c6eac073fa7e89a18142fc89cb4fb;hp=0b1d8b066ee2e992644d9cc0254dc672a6ac8db5;hpb=8f6f543758fb1b2b17ae2db519198d420eb9982d;p=libs%2Fgltk.git

diff --git a/source/slider.cpp b/source/slider.cpp
index 0b1d8b0..7123458 100644
--- a/source/slider.cpp
+++ b/source/slider.cpp
@@ -1,67 +1,79 @@
-/* $Id$
-
-This file is part of libmspgltk
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #include "slider.h"
 
 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;
+	double old_value = value;
 
 	if(v<min)
-		value=min;
+		value = min;
 	else if(v>max)
-		value=max;
+		value = max;
 	else
 	{
-		unsigned steps=static_cast<unsigned>((v-min)/step+0.5);
-		value=min+steps*step;
+		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::start_drag(int p)
+{
+	dragging = true;
+	drag_start_pos = p;
+	drag_start_value = value;
+	set_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;
+	clear_state(ACTIVE);
+}
+
 
 Slider::Loader::Loader(Slider &s):
-	Widget::Loader(s)
+	DataFile::DerivedObjectLoader<Slider, Widget::Loader>(s)
 {
 	add("range", &Slider::min, &Slider::max);
 	add("step",  &Slider::step);
 	add("value", &Slider::value);
 }
 
-Slider &Slider::Loader::get_object() const
-{
-	return static_cast<Slider &>(wdg);
-}
-
 } // namespace GLtk
 } // namespace Msp