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/*
Copyright (C) 2009 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.
*/
#include <gtkmm/menu.h>
#include "cairo_widget.h"
namespace ARDOUR {
class Session;
class RouteGroup;
}
class Editor;
/** Parent class for tabs which represent route groups as coloured tabs;
* Currently used on the left-hand side of the editor and at the top of the mixer.
*/
class GroupTabs : public CairoWidget
{
public:
GroupTabs ();
void set_session (ARDOUR::Session *);
protected:
struct Tab {
double from; ///< start coordinate
double to; ///< end coordinate
Gdk::Color colour; ///< colour
ARDOUR::RouteGroup* group; ///< route group
double first_ui_size; ///< GUI size of the first route in the group
double last_ui_size; ///< GUI size of the last route in the group
};
ARDOUR::Session* _session; ///< our session
private:
/** Compute all the tabs for this widget.
* @return Tabs.
*/
virtual std::list<Tab> compute_tabs () const = 0;
/** Draw a tab.
* @param cr Cairo context.
* @param t Tab.
*/
virtual void draw_tab (cairo_t* cr, Tab const & t) const = 0;
/** @param x x coordinate
* @param y y coordinate
* @return x or y, depending on which is the primary coordinate for this widget.
*/
virtual double primary_coordinate (double, double) const = 0;
/** Take a list of tabs and alter the route groups to reflect the tabs.
* @param tabs.
*/
virtual void reflect_tabs (std::list<Tab> const & tabs) = 0;
/** @return Size of the widget along the primary axis */
virtual double extent () const = 0;
/** @param g Route group, or 0.
* @return Menu to be popped up on right-click over the given route group.
*/
virtual Gtk::Menu* get_menu (ARDOUR::RouteGroup* g) = 0;
void render (cairo_t *);
void on_size_request (Gtk::Requisition *);
bool on_button_press_event (GdkEventButton *);
bool on_motion_notify_event (GdkEventMotion *);
bool on_button_release_event (GdkEventButton *);
Tab * click_to_tab (double, Tab**, Tab**);
std::list<Tab> _tabs; ///< current list of tabs
Tab* _dragging; ///< tab being dragged, or 0
bool _drag_moved; ///< true if there has been movement during any current drag
bool _drag_from; ///< true if the drag is of the `from' end of the tab, otherwise it's the `to' end
double _drag_last; ///< last mouse pointer position during drag
double _drag_limit; ///< limit of the current drag
};
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