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/*
Copyright (C) 2008 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_scroomer_h__
#define __gtkmm2ext_scroomer_h__
#include <gtkmm/drawingarea.h>
#include <gtkmm/adjustment.h>
#include <gdkmm.h>
#include "gtkmm2ext/visibility.h"
namespace Gtkmm2ext {
class LIBGTKMM2EXT_API Scroomer : public Gtk::DrawingArea
{
public:
enum Component {
TopBase = 0,
Handle1 = 1,
Slider = 2,
Handle2 = 3,
BottomBase = 4,
Total = 5,
None = 6
};
Scroomer(Gtk::Adjustment& adjustment);
~Scroomer();
bool on_motion_notify_event (GdkEventMotion*);
bool on_button_press_event (GdkEventButton*);
bool on_button_release_event (GdkEventButton*);
bool on_scroll_event (GdkEventScroll*);
virtual void on_size_allocate (Gtk::Allocation&);
void set_comp_rect(GdkRectangle&, Component) const;
Component point_in(double point) const;
void set_min_page_size(double page_size);
int get_handle_size() { return handle_size; }
inline int position_of(Component comp) { return position[comp]; }
sigc::signal0<void> DragStarting;
sigc::signal0<void> DragFinishing;
sigc::signal0<void> DoubleClicked;
protected:
Gtk::Adjustment& adj;
private:
struct UpdateRect {
GdkRectangle rect;
Component first_comp;
};
void update();
void adjustment_changed ();
int position[6];
int old_pos[6];
int handle_size;
double min_page_size;
GdkWindow* grab_window;
Component grab_comp;
double grab_y;
double unzoomed_val;
double unzoomed_page;
bool pinch;
};
} // namespace
#endif /* __gtkmm2ext_scroomer_h__ */
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