chiark - git - mdw - disorder/blob - disobedience/choose-menu.c

   1 /*
   2  * This file is part of DisOrder
   3  * Copyright (C) 2008 Richard Kettlewell
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18 #include "disobedience.h"
  19 #include "popup.h"
  20 #include "choose.h"
  21
  22 /** @brief Popup menu */
  23 static GtkWidget *choose_menu;
  24
  25 /** @brief Recursion step for choose_get_visible()
  26  * @param parent A visible node, or NULL for the root
  27  * @param callback Called for each visible node
  28  * @param userdata Passed to @p callback
  29  *
  30  * If @p callback returns nonzero, the walk stops immediately.
  31  */
  32 static int choose_visible_recurse(GtkTreeIter *parent,
  33                                   int (*callback)(GtkTreeIter *it,
  34                                                   int isfile,
  35                                                   void *userdata),
  36                                   void *userdata) {
  37   int expanded;
  38   if(parent) {
  39     /* Skip placeholders */
  40     if(choose_is_placeholder(parent))
  41       return 0;
  42     const int isfile = choose_is_file(parent);
  43     if(callback(parent, isfile, userdata))
  44       return 1;
  45     if(isfile)
  46       return 0;                 /* Files never have children */
  47     GtkTreePath *parent_path
  48       = gtk_tree_model_get_path(GTK_TREE_MODEL(choose_store),
  49                                 parent);
  50     expanded = gtk_tree_view_row_expanded(GTK_TREE_VIEW(choose_view),
  51                                           parent_path);
  52     gtk_tree_path_free(parent_path);
  53   } else
  54     expanded = 1;
  55   /* See if parent is expanded */
  56   if(expanded) {
  57     /* Parent is expanded, visit all its children */
  58     GtkTreeIter it[1];
  59     gboolean itv = gtk_tree_model_iter_children(GTK_TREE_MODEL(choose_store),
  60                                                 it,
  61                                                 parent);
  62     while(itv) {
  63       if(choose_visible_recurse(it, callback, userdata))
  64         return TRUE;
  65       itv = gtk_tree_model_iter_next(GTK_TREE_MODEL(choose_store), it);
  66     }
  67   }
  68   return 0;
  69 }
  70
  71 static void choose_visible_visit(int (*callback)(GtkTreeIter *it,
  72                                                  int isfile,
  73                                                  void *userdata),
  74                                  void *userdata) {
  75   choose_visible_recurse(NULL, callback, userdata);
  76 }
  77
  78 static int choose_selectall_sensitive_callback
  79    (GtkTreeIter attribute((unused)) *it,
  80      int isfile,
  81      void *userdata) {
  82   if(isfile) {
  83     *(int *)userdata = 1;
  84     return 1;
  85   }
  86   return 0;
  87 }
  88
  89 /** @brief Should 'select all' be sensitive?
  90  *
  91  * Yes if there are visible files.
  92  */
  93 static int choose_selectall_sensitive(void attribute((unused)) *extra) {
  94   int files = 0;
  95   choose_visible_visit(choose_selectall_sensitive_callback, &files);
  96   return files > 0;
  97 }
  98
  99 static int choose_selectall_activate_callback
 100     (GtkTreeIter *it,
 101      int isfile,
 102      void attribute((unused)) *userdata) {
 103   if(isfile)
 104     gtk_tree_selection_select_iter(choose_selection, it);
 105   else
 106     gtk_tree_selection_unselect_iter(choose_selection, it);
 107   return 0;
 108 }
 109
 110 /** @brief Activate select all
 111  *
 112  * Selects all files and deselects everything else.
 113  */
 114 static void choose_selectall_activate(GtkMenuItem attribute((unused)) *item,
 115                                       gpointer attribute((unused)) userdata) {
 116   choose_visible_visit(choose_selectall_activate_callback, 0);
 117 }
 118
 119 /** @brief Should 'select none' be sensitive
 120  *
 121  * Yes if anything is selected.
 122  */
 123 static int choose_selectnone_sensitive(void attribute((unused)) *extra) {
 124   return gtk_tree_selection_count_selected_rows(choose_selection) > 0;
 125 }
 126
 127 /** @brief Activate select none */
 128 static void choose_selectnone_activate(GtkMenuItem attribute((unused)) *item,
 129                                        gpointer attribute((unused)) userdata) {
 130   gtk_tree_selection_unselect_all(choose_selection);
 131 }
 132
 133 static void choose_play_sensitive_callback(GtkTreeModel attribute((unused)) *model,
 134                                            GtkTreePath attribute((unused)) *path,
 135                                            GtkTreeIter *iter,
 136                                            gpointer data) {
 137   int *filesp = data;
 138
 139   if(*filesp == -1)
 140     return;
 141   if(choose_is_dir(iter))
 142     *filesp = -1;
 143   else if(choose_is_file(iter))
 144     ++*filesp;
 145 }
 146
 147 /** @brief Should 'play' be sensitive?
 148  *
 149  * Yes if tracks are selected and no directories are */
 150 static int choose_play_sensitive(void attribute((unused)) *extra) {
 151   int files = 0;
 152
 153   gtk_tree_selection_selected_foreach(choose_selection,
 154                                       choose_play_sensitive_callback,
 155                                       &files);
 156   return files > 0;
 157 }
 158
 159 static void choose_gather_selected_files_callback(GtkTreeModel attribute((unused)) *model,
 160                                                   GtkTreePath attribute((unused)) *path,
 161                                                   GtkTreeIter *iter,
 162                                                   gpointer data) {
 163   struct vector *v = data;
 164
 165   if(choose_is_file(iter))
 166     vector_append(v, choose_get_track(iter));
 167 }
 168
 169
 170 static void choose_play_activate(GtkMenuItem attribute((unused)) *item,
 171                                  gpointer attribute((unused)) userdata) {
 172   struct vector v[1];
 173   vector_init(v);
 174   gtk_tree_selection_selected_foreach(choose_selection,
 175                                       choose_gather_selected_files_callback,
 176                                       v);
 177   for(int n = 0; n < v->nvec; ++n)
 178     disorder_eclient_play(client, v->vec[n], choose_play_completed, 0);
 179 }
 180
 181 static int choose_properties_sensitive(void *extra) {
 182   return choose_play_sensitive(extra);
 183 }
 184
 185 static void choose_properties_activate(GtkMenuItem attribute((unused)) *item,
 186                                        gpointer attribute((unused)) userdata) {
 187   struct vector v[1];
 188   vector_init(v);
 189   gtk_tree_selection_selected_foreach(choose_selection,
 190                                       choose_gather_selected_files_callback,
 191                                       v);
 192   properties(v->nvec, (const char **)v->vec);
 193 }
 194
 195 /** @brief Pop-up menu for choose */
 196 static struct menuitem choose_menuitems[] = {
 197   {
 198     "Play track",
 199     choose_play_activate,
 200     choose_play_sensitive,
 201     0,
 202     0
 203   },
 204   {
 205     "Track properties",
 206     choose_properties_activate,
 207     choose_properties_sensitive,
 208     0,
 209     0
 210   },
 211   {
 212     "Select all tracks",
 213     choose_selectall_activate,
 214     choose_selectall_sensitive,
 215     0,
 216     0
 217   },
 218   {
 219     "Deselect all tracks",
 220     choose_selectnone_activate,
 221     choose_selectnone_sensitive,
 222     0,
 223     0
 224   },
 225 };
 226
 227 const struct tabtype choose_tabtype = {
 228   choose_properties_sensitive,
 229   choose_selectall_sensitive,
 230   choose_selectnone_sensitive,
 231   choose_properties_activate,
 232   choose_selectall_activate,
 233   choose_selectnone_activate,
 234   0,
 235   0
 236 };
 237
 238 /** @brief Called when a mouse button is pressed or released */
 239 gboolean choose_button_event(GtkWidget attribute((unused)) *widget,
 240                              GdkEventButton *event,
 241                              gpointer attribute((unused)) user_data) {
 242   if(event->type == GDK_BUTTON_RELEASE && event->button == 2) {
 243     /* Middle click release - play track */
 244     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 245     choose_play_activate(NULL, NULL);
 246   } else if(event->type == GDK_BUTTON_PRESS && event->button == 3) {
 247     /* Right click press - pop up the menu */
 248     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 249     popup(&choose_menu, event,
 250           choose_menuitems, sizeof choose_menuitems / sizeof *choose_menuitems,
 251           0);
 252     return TRUE;
 253   }
 254   return FALSE;
 255 }
 256
 257 /*
 258 Local Variables:
 259 c-basic-offset:2
 260 comment-column:40
 261 fill-column:79
 262 indent-tabs-mode:nil
 263 End:
 264 */