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 /** @file disobedience/choose-menu.c
  19  * @brief Popup menu for choose screen
  20  */
  21 #include "disobedience.h"
  22 #include "popup.h"
  23 #include "choose.h"
  24
  25 /** @brief Popup menu */
  26 static GtkWidget *choose_menu;
  27
  28 /** @brief Recursion step for choose_get_visible()
  29  * @param parent A visible node, or NULL for the root
  30  * @param callback Called for each visible node
  31  * @param userdata Passed to @p callback
  32  *
  33  * If @p callback returns nonzero, the walk stops immediately.
  34  */
  35 static int choose_visible_recurse(GtkTreeIter *parent,
  36                                   int (*callback)(GtkTreeIter *it,
  37                                                   int isfile,
  38                                                   void *userdata),
  39                                   void *userdata) {
  40   int expanded;
  41   if(parent) {
  42     /* Skip placeholders */
  43     if(choose_is_placeholder(parent))
  44       return 0;
  45     const int isfile = choose_is_file(parent);
  46     if(callback(parent, isfile, userdata))
  47       return 1;
  48     if(isfile)
  49       return 0;                 /* Files never have children */
  50     GtkTreePath *parent_path
  51       = gtk_tree_model_get_path(GTK_TREE_MODEL(choose_store),
  52                                 parent);
  53     expanded = gtk_tree_view_row_expanded(GTK_TREE_VIEW(choose_view),
  54                                           parent_path);
  55     gtk_tree_path_free(parent_path);
  56   } else
  57     expanded = 1;
  58   /* See if parent is expanded */
  59   if(expanded) {
  60     /* Parent is expanded, visit all its children */
  61     GtkTreeIter it[1];
  62     gboolean itv = gtk_tree_model_iter_children(GTK_TREE_MODEL(choose_store),
  63                                                 it,
  64                                                 parent);
  65     while(itv) {
  66       if(choose_visible_recurse(it, callback, userdata))
  67         return TRUE;
  68       itv = gtk_tree_model_iter_next(GTK_TREE_MODEL(choose_store), it);
  69     }
  70   }
  71   return 0;
  72 }
  73
  74 static void choose_visible_visit(int (*callback)(GtkTreeIter *it,
  75                                                  int isfile,
  76                                                  void *userdata),
  77                                  void *userdata) {
  78   choose_visible_recurse(NULL, callback, userdata);
  79 }
  80
  81 static int choose_selectall_sensitive_callback
  82    (GtkTreeIter attribute((unused)) *it,
  83      int isfile,
  84      void *userdata) {
  85   if(isfile) {
  86     *(int *)userdata = 1;
  87     return 1;
  88   }
  89   return 0;
  90 }
  91
  92 /** @brief Should 'select all' be sensitive?
  93  *
  94  * Yes if there are visible files.
  95  */
  96 static int choose_selectall_sensitive(void attribute((unused)) *extra) {
  97   int files = 0;
  98   choose_visible_visit(choose_selectall_sensitive_callback, &files);
  99   return files > 0;
 100 }
 101
 102 static int choose_selectall_activate_callback
 103     (GtkTreeIter *it,
 104      int isfile,
 105      void attribute((unused)) *userdata) {
 106   if(isfile)
 107     gtk_tree_selection_select_iter(choose_selection, it);
 108   else
 109     gtk_tree_selection_unselect_iter(choose_selection, it);
 110   return 0;
 111 }
 112
 113 /** @brief Activate select all
 114  *
 115  * Selects all files and deselects everything else.
 116  */
 117 static void choose_selectall_activate(GtkMenuItem attribute((unused)) *item,
 118                                       gpointer attribute((unused)) userdata) {
 119   choose_visible_visit(choose_selectall_activate_callback, 0);
 120 }
 121
 122 /** @brief Should 'select none' be sensitive
 123  *
 124  * Yes if anything is selected.
 125  */
 126 static int choose_selectnone_sensitive(void attribute((unused)) *extra) {
 127   return gtk_tree_selection_count_selected_rows(choose_selection) > 0;
 128 }
 129
 130 /** @brief Activate select none */
 131 static void choose_selectnone_activate(GtkMenuItem attribute((unused)) *item,
 132                                        gpointer attribute((unused)) userdata) {
 133   gtk_tree_selection_unselect_all(choose_selection);
 134 }
 135
 136 static void choose_play_sensitive_callback(GtkTreeModel attribute((unused)) *model,
 137                                            GtkTreePath attribute((unused)) *path,
 138                                            GtkTreeIter *iter,
 139                                            gpointer data) {
 140   int *filesp = data;
 141
 142   if(*filesp == -1)
 143     return;
 144   if(choose_is_dir(iter))
 145     *filesp = -1;
 146   else if(choose_is_file(iter))
 147     ++*filesp;
 148 }
 149
 150 /** @brief Should 'play' be sensitive?
 151  *
 152  * Yes if tracks are selected and no directories are */
 153 static int choose_play_sensitive(void attribute((unused)) *extra) {
 154   int files = 0;
 155
 156   gtk_tree_selection_selected_foreach(choose_selection,
 157                                       choose_play_sensitive_callback,
 158                                       &files);
 159   return files > 0;
 160 }
 161
 162 static void choose_gather_selected_files_callback(GtkTreeModel attribute((unused)) *model,
 163                                                   GtkTreePath attribute((unused)) *path,
 164                                                   GtkTreeIter *iter,
 165                                                   gpointer data) {
 166   struct vector *v = data;
 167
 168   if(choose_is_file(iter))
 169     vector_append(v, choose_get_track(iter));
 170 }
 171
 172
 173 static void choose_play_activate(GtkMenuItem attribute((unused)) *item,
 174                                  gpointer attribute((unused)) userdata) {
 175   struct vector v[1];
 176   vector_init(v);
 177   gtk_tree_selection_selected_foreach(choose_selection,
 178                                       choose_gather_selected_files_callback,
 179                                       v);
 180   for(int n = 0; n < v->nvec; ++n)
 181     disorder_eclient_play(client, v->vec[n], choose_play_completed, 0);
 182 }
 183
 184 static int choose_properties_sensitive(void *extra) {
 185   return choose_play_sensitive(extra);
 186 }
 187
 188 static void choose_properties_activate(GtkMenuItem attribute((unused)) *item,
 189                                        gpointer attribute((unused)) userdata) {
 190   struct vector v[1];
 191   vector_init(v);
 192   gtk_tree_selection_selected_foreach(choose_selection,
 193                                       choose_gather_selected_files_callback,
 194                                       v);
 195   properties(v->nvec, (const char **)v->vec);
 196 }
 197
 198 /** @brief Pop-up menu for choose */
 199 static struct menuitem choose_menuitems[] = {
 200   {
 201     "Play track",
 202     choose_play_activate,
 203     choose_play_sensitive,
 204     0,
 205     0
 206   },
 207   {
 208     "Track properties",
 209     choose_properties_activate,
 210     choose_properties_sensitive,
 211     0,
 212     0
 213   },
 214   {
 215     "Select all tracks",
 216     choose_selectall_activate,
 217     choose_selectall_sensitive,
 218     0,
 219     0
 220   },
 221   {
 222     "Deselect all tracks",
 223     choose_selectnone_activate,
 224     choose_selectnone_sensitive,
 225     0,
 226     0
 227   },
 228 };
 229
 230 const struct tabtype choose_tabtype = {
 231   choose_properties_sensitive,
 232   choose_selectall_sensitive,
 233   choose_selectnone_sensitive,
 234   choose_properties_activate,
 235   choose_selectall_activate,
 236   choose_selectnone_activate,
 237   0,
 238   0
 239 };
 240
 241 /** @brief Called when a mouse button is pressed or released */
 242 gboolean choose_button_event(GtkWidget attribute((unused)) *widget,
 243                              GdkEventButton *event,
 244                              gpointer attribute((unused)) user_data) {
 245   if(event->type == GDK_BUTTON_RELEASE && event->button == 2) {
 246     /* Middle click release - play track */
 247     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 248     choose_play_activate(NULL, NULL);
 249   } else if(event->type == GDK_BUTTON_PRESS && event->button == 3) {
 250     /* Right click press - pop up the menu */
 251     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 252     popup(&choose_menu, event,
 253           choose_menuitems, sizeof choose_menuitems / sizeof *choose_menuitems,
 254           0);
 255     return TRUE;
 256   }
 257   return FALSE;
 258 }
 259
 260 /*
 261 Local Variables:
 262 c-basic-offset:2
 263 comment-column:40
 264 fill-column:79
 265 indent-tabs-mode:nil
 266 End:
 267 */