ardour/gtk2_ardour/group_tabs.cc
2010-03-30 15:18:43 +00:00

283 lines
5.5 KiB
C++

/*
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/stock.h>
#include "ardour/session.h"
#include "ardour/route_group.h"
#include "ardour/route.h"
#include "gui_thread.h"
#include "route_group_dialog.h"
#include "group_tabs.h"
#include "keyboard.h"
#include "i18n.h"
using namespace std;
using namespace Gtk;
using namespace ARDOUR;
using Gtkmm2ext::Keyboard;
GroupTabs::GroupTabs (Editor* e)
: EditorComponent (e),
_dragging (0),
_dragging_new_tab (0)
{
}
void
GroupTabs::set_session (Session* s)
{
EditorComponent::set_session (s);
if (_session) {
_session->RouteGroupChanged.connect (_session_connections, invalidator (*this), boost::bind (&GroupTabs::set_dirty, this), gui_context());
}
}
/** Handle a size request.
* @param req GTK requisition
*/
void
GroupTabs::on_size_request (Gtk::Requisition *req)
{
/* Use a dummy, small width and the actual height that we want */
req->width = 16;
req->height = 16;
}
bool
GroupTabs::on_button_press_event (GdkEventButton* ev)
{
using namespace Menu_Helpers;
double const p = primary_coordinate (ev->x, ev->y);
list<Tab>::iterator prev;
list<Tab>::iterator next;
Tab* t = click_to_tab (p, &prev, &next);
_drag_min = prev != _tabs.end() ? prev->to : 0;
_drag_max = next != _tabs.end() ? next->from : extent ();
if (ev->button == 1) {
if (t == 0) {
Tab n;
n.from = n.to = p;
_dragging_new_tab = true;
if (next == _tabs.end()) {
_tabs.push_back (n);
t = &_tabs.back ();
} else {
list<Tab>::iterator j = _tabs.insert (next, n);
t = &(*j);
}
} else {
_dragging_new_tab = false;
}
_dragging = t;
_drag_moved = false;
_drag_first = p;
double const h = (t->from + t->to) / 2;
if (p < h) {
_drag_moving = t->from;
_drag_fixed = t->to;
_drag_offset = p - t->from;
} else {
_drag_moving = t->to;
_drag_fixed = t->from;
_drag_offset = p - t->to;
}
} else if (ev->button == 3) {
RouteGroup* g = t ? t->group : 0;
Menu* m = get_menu (g);
if (m) {
m->popup (ev->button, ev->time);
}
}
return true;
}
bool
GroupTabs::on_motion_notify_event (GdkEventMotion* ev)
{
if (_dragging == 0) {
return false;
}
double const p = primary_coordinate (ev->x, ev->y);
if (p != _drag_first) {
_drag_moved = true;
}
_drag_moving = p - _drag_offset;
_dragging->from = min (_drag_moving, _drag_fixed);
_dragging->to = max (_drag_moving, _drag_fixed);
_dragging->from = max (_dragging->from, _drag_min);
_dragging->to = min (_dragging->to, _drag_max);
set_dirty ();
queue_draw ();
return true;
}
bool
GroupTabs::on_button_release_event (GdkEventButton* ev)
{
if (_dragging == 0) {
return false;
}
if (!_drag_moved) {
if (_dragging->group) {
if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
/* edit */
RouteGroupDialog d (_dragging->group, Gtk::Stock::APPLY);
d.do_run ();
} else {
/* toggle active state */
_dragging->group->set_active (!_dragging->group->is_active (), this);
}
}
} else {
/* finish drag */
RouteList routes = routes_for_tab (_dragging);
if (!routes.empty()) {
if (_dragging_new_tab) {
RouteGroup* g = new_route_group ();
if (g) {
for (RouteList::iterator i = routes.begin(); i != routes.end(); ++i) {
g->add (*i);
}
}
} else {
boost::shared_ptr<RouteList> r = _session->get_routes ();
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
if (find (routes.begin(), routes.end(), *i) == routes.end()) {
/* this route is not on the list of those that should be in _dragging's group */
if ((*i)->route_group() == _dragging->group) {
_dragging->group->remove (*i);
}
} else {
_dragging->group->add (*i);
}
}
}
}
set_dirty ();
queue_draw ();
}
_dragging = 0;
return true;
}
void
GroupTabs::render (cairo_t* cr)
{
if (_dragging == 0) {
_tabs = compute_tabs ();
}
/* background */
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_rectangle (cr, 0, 0, _width, _height);
cairo_fill (cr);
/* tabs */
for (list<Tab>::const_iterator i = _tabs.begin(); i != _tabs.end(); ++i) {
draw_tab (cr, *i);
}
}
/** Convert a click position to a tab.
* @param c Click position.
* @param prev Filled in with the previous tab to the click, or 0.
* @param next Filled in with the next tab after the click, or 0.
* @return Tab under the click, or 0.
*/
GroupTabs::Tab *
GroupTabs::click_to_tab (double c, list<Tab>::iterator* prev, list<Tab>::iterator* next)
{
*prev = *next = _tabs.end ();
Tab* under = 0;
list<Tab>::iterator i = _tabs.begin ();
while (i != _tabs.end()) {
if (i->from > c) {
break;
}
if (i->to < c) {
*prev = i;
++i;
continue;
}
if (i->from <= c && c < i->to) {
under = &(*i);
}
++i;
}
if (i != _tabs.end()) {
*next = i;
if (under) {
*next++;
}
}
return under;
}