2 Copyright (C) 2009 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <gtkmm/menu.h>
21 #include "cairo_widget.h"
30 /** Parent class for tabs which represent route groups as coloured tabs;
31 * Currently used on the left-hand side of the editor and at the top of the mixer.
33 class GroupTabs : public CairoWidget
38 void set_session (ARDOUR::Session *);
43 double from; ///< start coordinate
44 double to; ///< end coordinate
45 Gdk::Color colour; ///< colour
46 ARDOUR::RouteGroup* group; ///< route group
47 double first_ui_size; ///< GUI size of the first route in the group
48 double last_ui_size; ///< GUI size of the last route in the group
51 ARDOUR::Session* _session; ///< our session
54 /** Compute all the tabs for this widget.
57 virtual std::list<Tab> compute_tabs () const = 0;
60 * @param cr Cairo context.
63 virtual void draw_tab (cairo_t* cr, Tab const & t) const = 0;
65 /** @param x x coordinate
66 * @param y y coordinate
67 * @return x or y, depending on which is the primary coordinate for this widget.
69 virtual double primary_coordinate (double, double) const = 0;
71 /** Take a list of tabs and alter the route groups to reflect the tabs.
74 virtual void reflect_tabs (std::list<Tab> const & tabs) = 0;
76 /** @return Size of the widget along the primary axis */
77 virtual double extent () const = 0;
79 /** @param g Route group.
80 * @return Menu to be popped up on right-click over the given route group.
82 virtual Gtk::Menu* get_menu (ARDOUR::RouteGroup* g) = 0;
84 void render (cairo_t *);
85 void on_size_request (Gtk::Requisition *);
86 bool on_button_press_event (GdkEventButton *);
87 bool on_motion_notify_event (GdkEventMotion *);
88 bool on_button_release_event (GdkEventButton *);
90 Tab * click_to_tab (double, Tab**, Tab**);
92 std::list<Tab> _tabs; ///< current list of tabs
93 Tab* _dragging; ///< tab being dragged, or 0
94 bool _drag_moved; ///< true if there has been movement during any current drag
95 bool _drag_from; ///< true if the drag is of the `from' end of the tab, otherwise it's the `to' end
96 double _drag_last; ///< last mouse pointer position during drag
97 double _drag_limit; ///< limit of the current drag