-/* $Id$
-
-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),
dragging(false),
- drag_area_size(0)
+ drag_area_size(0),
+ drag_area_offset(0),
+ slider_size(1)
{ }
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);
+ mark_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::click(int p)
+{
+ p -= drag_area_offset;
+ if(p<0 || p>=static_cast<int>(drag_area_size))
+ return;
+
+ int sp = static_cast<int>((drag_area_size-slider_size)*(value-min)/(max-min));
+ if(p<sp)
+ set_value(value-step*10);
+ else if(p>=static_cast<int>(sp+slider_size))
+ set_value(value+step*10);
+ else
+ start_drag(drag_area_offset+p);
+}
+
void Slider::start_drag(int p)
{
- dragging=true;
- drag_start_pos=p;
- drag_start_value=value;
+ 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);
+ set_value(drag_start_value+(p-drag_start_pos)*(max-min)/(drag_area_size-slider_size));
}
void Slider::end_drag()
{
- dragging=false;
+ 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