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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_pixfader_h__
#define __gtkmm2ext_pixfader_h__
#include <cmath>
#include <stdint.h>
#include <gtkmm/drawingarea.h>
#include <gtkmm/adjustment.h>
#include <gdkmm.h>
namespace Gtkmm2ext {
class PixFader : public Gtk::DrawingArea
{
public:
PixFader (Glib::RefPtr<Gdk::Pixbuf>, Glib::RefPtr<Gdk::Pixbuf>, Gtk::Adjustment& adjustment, int orientation, int);
virtual ~PixFader ();
void set_fader_length (int);
void set_border_colors (uint32_t rgba_left, uint32_t rgba_right);
void set_default_value (float);
protected:
Gtk::Adjustment& adjustment;
void on_size_request (GtkRequisition*);
bool on_expose_event (GdkEventExpose*);
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);
enum Orientation {
VERT=1,
HORIZ=2,
};
private:
enum State {
NORMAL,
DESENSITISED,
STATES
};
Cairo::RefPtr<Cairo::Context> belt_context[STATES];
Cairo::RefPtr<Cairo::ImageSurface> belt_surface[STATES];
Glib::RefPtr<Gdk::Pixbuf> pixbuf[STATES];
int span, girth;
int _orien;
float left_r;
float left_g;
float left_b;
float right_r;
float right_g;
float right_b;
GdkRectangle view;
GdkWindow* grab_window;
double grab_loc;
double grab_start;
int last_drawn;
bool dragging;
float default_value;
int unity_loc;
void adjustment_changed ();
int display_span ();
void set_adjustment_from_event (GdkEventButton *);
void update_unity_position ();
};
} /* namespace */
#endif /* __gtkmm2ext_pixfader_h__ */
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