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