wmcliphist/hotkeys.c

   1 #include "wmcliphist.h"
   2 #include <gdk/gdkkeysyms.h>
   3
   4 /* Exec on hotkey? */
   5 int exec_hotkey = 1;
   6
   7 /* hotkeys */
   8 gchar   menukey_str[32] = DEF_MENUKEY;
   9 guint   menukey;
  10 guint   menukey_mask;
  11
  12 gchar   prev_item_key_str[32] = DEF_PREV_ITEM_KEY;
  13 guint   prev_item_key;
  14 guint   prev_item_mask;
  15
  16 gchar   exec_item_key_str[32] = DEF_EXEC_ITEM_KEY;
  17 guint   exec_item_key;
  18 guint   exec_item_mask;
  19
  20 /*
  21  * filter grabbed hotkeys
  22  */
  23 GdkFilterReturn
  24 global_keys_filter(GdkXEvent *gdk_xevent, GdkEvent *event, gpointer data)
  25 {
  26         XEvent  *xevent = (XEvent *)gdk_xevent;
  27
  28         begin_func("global_keys_filter");
  29
  30         if (xevent->type == KeyPress) {
  31                 if (xevent->xkey.keycode ==
  32                                 XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), menukey) &&
  33                                 xevent->xkey.state & menukey_mask) {
  34                         /* popup history menu */
  35                         gtk_menu_popup(GTK_MENU(menu_hist),
  36                                         NULL, NULL,
  37                                         NULL, NULL,
  38                                         0,
  39                                         GDK_CURRENT_TIME);
  40                         return_val(GDK_FILTER_REMOVE);
  41                 } else if (xevent->xkey.keycode ==
  42                                 XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), prev_item_key)
  43                                 && xevent->xkey.state & prev_item_mask) {
  44                         /* switch first two history items */
  45                         GList *second;
  46                         if (history_items == NULL) {
  47                                 return_val(GDK_FILTER_REMOVE);
  48                         }
  49                         second = g_list_first(history_items)->next;
  50                         if (second == NULL) {
  51                                 return_val(GDK_FILTER_REMOVE);
  52                         }
  53
  54                         move_item_to_begin((HISTORY_ITEM *) second->data);
  55
  56                         return_val(GDK_FILTER_REMOVE);
  57                 } else if (xevent->xkey.keycode ==
  58                                 XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), exec_item_key) &&
  59                                 xevent->xkey.state & exec_item_mask) {
  60                         /* exec command on current item */
  61                         if (exec_hotkey) {
  62                                 HISTORY_ITEM *hist_item;
  63                                 hist_item = (HISTORY_ITEM *) g_list_first(history_items)->data;
  64                                 exec_item(hist_item->content, NULL);
  65                         }
  66                         return_val(GDK_FILTER_REMOVE);
  67                 }
  68         }
  69
  70         return_val(GDK_FILTER_CONTINUE);
  71 }
  72
  73
  74 /*
  75  * parse key string
  76  */
  77 int
  78 hotkey_parse(char *hotkey, guint *key, guint *mask)
  79 {
  80         char    c;
  81         char    *tmp = g_new0(char, strlen(hotkey));
  82         int     i, idx = 0;
  83
  84         begin_func("hotkey_parse");
  85
  86         *mask = 0;
  87
  88         for (i = 0; i < strlen(hotkey); i++) {
  89                 c = hotkey[i];
  90                 if (isalpha(c)) {
  91                         tmp[idx++] = c;
  92                         tmp[idx] = '\0';
  93                 } else if (c == '+' || c == '-') {
  94                         idx = 0;
  95                         if (strcasecmp(tmp, "control") == 0 ||
  96                                         strcasecmp(tmp, "ctrl") == 0)
  97                                 *mask |= ControlMask;
  98                         else if (strcasecmp(tmp, "alt") == 0)
  99                                 *mask |= Mod1Mask;
 100                         else if (strcasecmp(tmp, "shift") == 0)
 101                                 *mask |= ShiftMask;
 102                         else {
 103                                 fprintf(stderr, "Invalid key modifier: %s\n",
 104                                                 tmp);
 105                                 g_free(tmp);
 106                                 return_val(-1);
 107                         }
 108                 }
 109         }
 110
 111         if ((*key = gdk_keyval_from_name(tmp)) == GDK_KEY_VoidSymbol) {
 112                 g_free(tmp);
 113                 return_val(-1);
 114         }
 115
 116         g_free(tmp);
 117         return_val(0);
 118 }
 119
 120
 121
 122 #define grab_key(keysym, basemask) \
 123         XGrabKey(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), keysym), \
 124                         basemask, GDK_ROOT_WINDOW(), True, GrabModeAsync, \
 125                         GrabModeAsync); \
 126         XGrabKey(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), keysym), \
 127                         basemask | LockMask, GDK_ROOT_WINDOW(), True, \
 128                         GrabModeAsync, GrabModeAsync); \
 129         XGrabKey(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), keysym), \
 130                         basemask | Mod2Mask, GDK_ROOT_WINDOW(), True, \
 131                         GrabModeAsync, GrabModeAsync); \
 132         XGrabKey(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), keysym), \
 133                         basemask | Mod2Mask | LockMask, GDK_ROOT_WINDOW(), \
 134                         True, GrabModeAsync, GrabModeAsync);
 135
 136
 137 #define ungrab_key(keysym, basemask) \
 138         XUngrabKey(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), keysym), \
 139                         basemask, GDK_ROOT_WINDOW()); \
 140         XUngrabKey(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), keysym), \
 141                         basemask | LockMask, GDK_ROOT_WINDOW()); \
 142         XUngrabKey(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), keysym), \
 143                         basemask | Mod2Mask, GDK_ROOT_WINDOW()); \
 144         XUngrabKey(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), XKeysymToKeycode(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), keysym), \
 145                         basemask | Mod2Mask | LockMask, GDK_ROOT_WINDOW());
 146
 147
 148 /*
 149  * initialize hotkeys
 150  */
 151 void
 152 hotkeys_init()
 153 {
 154         char    msg_str[128];
 155
 156         begin_func("hotkeys_init");
 157
 158         if (hotkey_parse(menukey_str, &menukey, &menukey_mask) != 0) {
 159                 sprintf(msg_str, "Invalid menu hotkey '%s'.\nFalling back to "
 160                                 "default (" DEF_MENUKEY ")\n", menukey_str);
 161                 show_message(msg_str, "Warning", "OK", NULL, NULL);
 162                 strcpy(menukey_str, DEF_MENUKEY);
 163                 hotkey_parse(menukey_str, &menukey, &menukey_mask);
 164         }
 165         if (hotkey_parse(prev_item_key_str, &prev_item_key, &prev_item_mask) != 0) {
 166                 sprintf(msg_str, "Invalid previous item hotkey '%s'.\n"
 167                                 "Falling back to default (" DEF_PREV_ITEM_KEY
 168                                 ")\n", prev_item_key_str);
 169                 show_message(msg_str, "Warning", "OK", NULL, NULL);
 170                 hotkey_parse(DEF_PREV_ITEM_KEY, &prev_item_key,
 171                                 &prev_item_mask);
 172         }
 173         if (hotkey_parse(exec_item_key_str, &exec_item_key, &exec_item_mask) != 0) {
 174                 sprintf(msg_str, "Invalid exec hotkey '%s'.\n"
 175                                 "Falling back to default (" DEF_EXEC_ITEM_KEY
 176                                 ")\n", exec_item_key_str);
 177                 show_message(msg_str, "Warning", "OK", NULL, NULL);
 178                 hotkey_parse(DEF_EXEC_ITEM_KEY, &exec_item_key,
 179                                 &exec_item_mask);
 180         }
 181         gdk_window_add_filter(gdk_get_default_root_window(), global_keys_filter, NULL);
 182         grab_key(menukey, menukey_mask);
 183         grab_key(prev_item_key, prev_item_mask);
 184         grab_key(exec_item_key, exec_item_mask);
 185
 186         return_void();
 187 }
 188
 189 /*
 190  * disable hotkeys
 191  */
 192 void
 193 hotkeys_done()
 194 {
 195         begin_func("hotkeys_done");
 196         ungrab_key(menukey, menukey_mask);
 197         return_void();
 198 }