/* === S Y N F I G ========================================================= */
/*! \file widgets/widget_ruler.h
** \brief Template Header
**
** $Id$
**
** \legal
** ......... ... 2014 Ivan Mahonin
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
** published by the Free Software Foundation; either version 2 of
** the License, or (at your option) any later version.
**
** This package is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** General Public License for more details.
** \endlegal
*/
/* ========================================================================= */
/* === S T A R T =========================================================== */
#ifndef __SYNFIG_STUDIO_WIDGET_RULER_H
#define __SYNFIG_STUDIO_WIDGET_RULER_H
/* === H E A D E R S ======================================================= */
#include <sigc++/sigc++.h>
#include <gtkmm/drawingarea.h>
#include <pangomm/layout.h>
#include <synfig/real.h>
#include <synfig/string.h>
/* === M A C R O S ========================================================= */
/* === T Y P E D E F S ===================================================== */
/* === C L A S S E S & S T R U C T S ======================================= */
namespace studio {
class Widget_Ruler : public Gtk::DrawingArea
{
private:
bool is_vertical;
Glib::RefPtr<Pango::Layout> layout;
synfig::Real min;
synfig::Real max;
synfig::Real position;
void draw_line(
const ::Cairo::RefPtr< ::Cairo::Context>& cr,
synfig::Real position,
synfig::Real size,
const Gdk::RGBA &color,
synfig::Real width,
synfig::Real height );
void draw_text(
const ::Cairo::RefPtr< ::Cairo::Context>& cr,
synfig::Real position,
const synfig::String &text,
int size,
const Gdk::RGBA &color,
synfig::Real offset,
synfig::Real width,
synfig::Real height );
public:
Widget_Ruler(bool is_vertical);
~Widget_Ruler();
synfig::Real get_screen_min() const
{ return 0.0; }
synfig::Real get_screen_max() const
{ return (synfig::Real)(is_vertical ? get_height() : get_width()); }
synfig::Real position_to_screen(synfig::Real value) const
{ return (value - min)/(max - min)*(get_screen_max()-get_screen_min()) + get_screen_min(); }
synfig::Real position_from_screen(synfig::Real value) const
{ return (value - get_screen_min())/(get_screen_max()-get_screen_min())*(max - min) + min; }
synfig::Real distance_to_screen(synfig::Real value) const
{ return value/(max - min)*(get_screen_max()-get_screen_min()); }
synfig::Real distance_from_screen(synfig::Real value) const
{ return value/(get_screen_max()-get_screen_min())*(max - min); }
synfig::Real get_min() const { return min; }
void set_min(synfig::Real value);
synfig::Real get_max() const { return max; }
void set_max(synfig::Real value);
synfig::Real get_position() const { return position; }
void set_position(synfig::Real value);
synfig::Real get_screen_position() const
{ return position_to_screen(get_position()); }
void set_screen_position(synfig::Real value)
{ set_position(position_from_screen(value)); }
bool on_draw(const ::Cairo::RefPtr< ::Cairo::Context>& cr);
}; // END of class Widget_Ruler
}; // END of namespace studio
/* === E N D =============================================================== */
#endif