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/*
Copyright (C) 2006 Paul Davis
This program 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 program 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __gtkmm2ext_fader_h__
#define __gtkmm2ext_fader_h__
#include <cmath>
#include <stdint.h>
#include <gtkmm/adjustment.h>
#include <gdkmm.h>
#include <gtkmm2ext/binding_proxy.h>
#include "gtkmm2ext/cairo_widget.h"
#include <boost/shared_ptr.hpp>
#include "gtkmm2ext/visibility.h"
namespace Gtkmm2ext {
class LIBGTKMM2EXT_API Fader : public CairoWidget
{
public:
Fader (Gtk::Adjustment& adjustment,
const Glib::RefPtr<Gdk::Pixbuf>& face_pixbuf,
const Glib::RefPtr<Gdk::Pixbuf>& active_face_pixbuf,
const Glib::RefPtr<Gdk::Pixbuf>& underlay_pixbuf,
const Glib::RefPtr<Gdk::Pixbuf>& handle_pixbuf,
const Glib::RefPtr<Gdk::Pixbuf>& active_handle_pixbuf,
int min_pos_x,
int min_pos_y,
int max_pos_x,
int max_pos_y,
bool read_only);
virtual ~Fader ();
void set_controllable (boost::shared_ptr<PBD::Controllable> c) { binding_proxy.set_controllable (c); }
void set_default_value (float);
void set_touch_cursor (const Glib::RefPtr<Gdk::Pixbuf>& touch_cursor);
void get_image_scales (double &x_scale, double &y_scale);
protected:
void get_handle_position (double& x, double& y);
void on_size_request (GtkRequisition*);
void on_size_allocate (Gtk::Allocation& alloc);
void render (cairo_t* cr, cairo_rectangle_t*);
bool on_button_press_event (GdkEventButton*);
bool on_button_release_event (GdkEventButton*);
bool on_motion_notify_event (GdkEventMotion*);
bool on_scroll_event (GdkEventScroll* ev);
bool on_enter_notify_event (GdkEventCrossing* ev);
bool on_leave_notify_event (GdkEventCrossing* ev);
protected:
Gtk::Adjustment& adjustment;
BindingProxy binding_proxy;
private:
const Glib::RefPtr<Gdk::Pixbuf> _face_pixbuf;
const Glib::RefPtr<Gdk::Pixbuf> _active_face_pixbuf;
const Glib::RefPtr<Gdk::Pixbuf> _underlay_pixbuf;
const Glib::RefPtr<Gdk::Pixbuf> _handle_pixbuf;
const Glib::RefPtr<Gdk::Pixbuf> _active_handle_pixbuf;
int _min_pos_x;
int _min_pos_y;
int _max_pos_x;
int _max_pos_y;
bool _hovering;
GdkWindow* _grab_window;
Gdk::Cursor *_touch_cursor;
double _grab_start_mouse_x;
double _grab_start_mouse_y;
double _grab_start_handle_x;
double _grab_start_handle_y;
double _last_drawn_x;
double _last_drawn_y;
bool _dragging;
float _default_value;
bool _read_only;
void adjustment_changed ();
void update_unity_position ();
};
} /* namespace */
#endif /* __gtkmm2ext_fader_h__ */
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