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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 "editor_component.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 EditorComponent
{
public:
GroupTabs (Editor *);
void connect_to_session (ARDOUR::Session *);
protected:
struct Tab {
Tab () : group (0) {}
double from;
double to;
Gdk::Color colour; ///< colour
ARDOUR::RouteGroup* group; ///< route group
};
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;
virtual ARDOUR::RouteList routes_for_tab (Tab const * t) const = 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;
virtual ARDOUR::RouteGroup* new_route_group () const = 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, std::list<Tab>::iterator *, std::list<Tab>::iterator *);
std::list<Tab> _tabs; ///< current list of tabs
Tab* _dragging; ///< tab being dragged, or 0
bool _dragging_new_tab; ///< true if we're dragging a new tab
bool _drag_moved; ///< true if there has been movement during any current drag
double _drag_fixed; ///< the position of the fixed end of the tab being dragged
double _drag_moving; ///< the position of the moving end of the tab being dragged
double _drag_offset; ///< offset from the mouse to the end of the tab being dragged
double _drag_min; ///< minimum position for drag
double _drag_max; ///< maximum position for drag
double _drag_first; ///< first mouse pointer position during drag
};
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