gtk2_ardour/group_tabs.cc

   1 /*
   2     Copyright (C) 2009 Paul Davis
   3
   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.
   8
   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.
  13
  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.
  17
  18 */
  19
  20 #include <gtkmm/stock.h>
  21 #include "ardour/session.h"
  22 #include "ardour/route_group.h"
  23 #include "ardour/route.h"
  24
  25 #include "gui_thread.h"
  26 #include "route_group_dialog.h"
  27 #include "group_tabs.h"
  28 #include "keyboard.h"
  29 #include "i18n.h"
  30
  31 using namespace std;
  32 using namespace Gtk;
  33 using namespace ARDOUR;
  34 using Gtkmm2ext::Keyboard;
  35
  36 GroupTabs::GroupTabs (Editor* e)
  37         : EditorComponent (e),
  38           _dragging (0),
  39           _dragging_new_tab (0)
  40 {
  41
  42 }
  43
  44 void
  45 GroupTabs::set_session (Session* s)
  46 {
  47         EditorComponent::set_session (s);
  48
  49         if (_session) {
  50                 _session->RouteGroupChanged.connect (_session_connections, invalidator (*this), boost::bind (&GroupTabs::set_dirty, this), gui_context());
  51         }
  52 }
  53
  54
  55 /** Handle a size request.
  56  *  @param req GTK requisition
  57  */
  58 void
  59 GroupTabs::on_size_request (Gtk::Requisition *req)
  60 {
  61         /* Use a dummy, small width and the actual height that we want */
  62         req->width = 16;
  63         req->height = 16;
  64 }
  65
  66 bool
  67 GroupTabs::on_button_press_event (GdkEventButton* ev)
  68 {
  69         using namespace Menu_Helpers;
  70
  71         double const p = primary_coordinate (ev->x, ev->y);
  72
  73         list<Tab>::iterator prev;
  74         list<Tab>::iterator next;
  75         Tab* t = click_to_tab (p, &prev, &next);
  76
  77         _drag_min = prev != _tabs.end() ? prev->to : 0;
  78         _drag_max = next != _tabs.end() ? next->from : extent ();
  79
  80         if (ev->button == 1) {
  81
  82                 if (t == 0) {
  83                         Tab n;
  84                         n.from = n.to = p;
  85                         _dragging_new_tab = true;
  86
  87                         if (next == _tabs.end()) {
  88                                 _tabs.push_back (n);
  89                                 t = &_tabs.back ();
  90                         } else {
  91                                 list<Tab>::iterator j = _tabs.insert (next, n);
  92                                 t = &(*j);
  93                         }
  94
  95                 } else {
  96                         _dragging_new_tab = false;
  97                 }
  98
  99                 _dragging = t;
 100                 _drag_moved = false;
 101                 _drag_first = p;
 102
 103                 double const h = (t->from + t->to) / 2;
 104                 if (p < h) {
 105                         _drag_moving = t->from;
 106                         _drag_fixed = t->to;
 107                         _drag_offset = p - t->from;
 108                 } else {
 109                         _drag_moving = t->to;
 110                         _drag_fixed = t->from;
 111                         _drag_offset = p - t->to;
 112                 }
 113
 114         } else if (ev->button == 3) {
 115
 116                 RouteGroup* g = t ? t->group : 0;
 117                 Menu* m = get_menu (g);
 118                 if (m) {
 119                         m->popup (ev->button, ev->time);
 120                 }
 121
 122         }
 123
 124         return true;
 125 }
 126
 127
 128 bool
 129 GroupTabs::on_motion_notify_event (GdkEventMotion* ev)
 130 {
 131         if (_dragging == 0) {
 132                 return false;
 133         }
 134
 135         double const p = primary_coordinate (ev->x, ev->y);
 136
 137         if (p != _drag_first) {
 138                 _drag_moved = true;
 139         }
 140
 141         _drag_moving = p - _drag_offset;
 142
 143         _dragging->from = min (_drag_moving, _drag_fixed);
 144         _dragging->to = max (_drag_moving, _drag_fixed);
 145
 146         _dragging->from = max (_dragging->from, _drag_min);
 147         _dragging->to = min (_dragging->to, _drag_max);
 148
 149         set_dirty ();
 150         queue_draw ();
 151
 152         return true;
 153 }
 154
 155
 156 bool
 157 GroupTabs::on_button_release_event (GdkEventButton* ev)
 158 {
 159         if (_dragging == 0) {
 160                 return false;
 161         }
 162
 163         if (!_drag_moved) {
 164
 165                 if (_dragging->group) {
 166
 167                         if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 168
 169                                 /* edit */
 170                                 RouteGroupDialog d (_dragging->group, Gtk::Stock::APPLY);
 171                                 d.do_run ();
 172
 173                         } else {
 174
 175                                 /* toggle active state */
 176                                 _dragging->group->set_active (!_dragging->group->is_active (), this);
 177
 178                         }
 179                 }
 180
 181         } else {
 182                 /* finish drag */
 183                 RouteList routes = routes_for_tab (_dragging);
 184
 185                 if (!routes.empty()) {
 186                         if (_dragging_new_tab) {
 187                                 RouteGroup* g = new_route_group ();
 188                                 if (g) {
 189                                         for (RouteList::iterator i = routes.begin(); i != routes.end(); ++i) {
 190                                                 g->add (*i);
 191                                         }
 192                                 }
 193                         } else {
 194                                 boost::shared_ptr<RouteList> r = _session->get_routes ();
 195                                 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
 196
 197                                         if (find (routes.begin(), routes.end(), *i) == routes.end()) {
 198                                                 /* this route is not on the list of those that should be in _dragging's group */
 199                                                 if ((*i)->route_group() == _dragging->group) {
 200                                                         _dragging->group->remove (*i);
 201                                                 }
 202                                         } else {
 203                                                 _dragging->group->add (*i);
 204                                         }
 205                                 }
 206                         }
 207                 }
 208
 209                 set_dirty ();
 210                 queue_draw ();
 211         }
 212
 213         _dragging = 0;
 214
 215         return true;
 216 }
 217
 218 void
 219 GroupTabs::render (cairo_t* cr)
 220 {
 221         if (_dragging == 0) {
 222                 _tabs = compute_tabs ();
 223         }
 224
 225         /* background */
 226
 227         cairo_set_source_rgb (cr, 0, 0, 0);
 228         cairo_rectangle (cr, 0, 0, _width, _height);
 229         cairo_fill (cr);
 230
 231         /* tabs */
 232
 233         for (list<Tab>::const_iterator i = _tabs.begin(); i != _tabs.end(); ++i) {
 234                 draw_tab (cr, *i);
 235         }
 236 }
 237
 238
 239 /** Convert a click position to a tab.
 240  *  @param c Click position.
 241  *  @param prev Filled in with the previous tab to the click, or 0.
 242  *  @param next Filled in with the next tab after the click, or 0.
 243  *  @return Tab under the click, or 0.
 244  */
 245
 246 GroupTabs::Tab *
 247 GroupTabs::click_to_tab (double c, list<Tab>::iterator* prev, list<Tab>::iterator* next)
 248 {
 249         *prev = *next = _tabs.end ();
 250         Tab* under = 0;
 251
 252         list<Tab>::iterator i = _tabs.begin ();
 253         while (i != _tabs.end()) {
 254
 255                 if (i->from > c) {
 256                         break;
 257                 }
 258
 259                 if (i->to < c) {
 260                         *prev = i;
 261                         ++i;
 262                         continue;
 263                 }
 264
 265                 if (i->from <= c && c < i->to) {
 266                         under = &(*i);
 267                 }
 268
 269                 ++i;
 270         }
 271
 272         if (i != _tabs.end()) {
 273                 *next = i;
 274
 275                 if (under) {
 276                         *next++;
 277                 }
 278         }
 279
 280         return under;
 281 }
 282