openbox/mouse.c

   1 #include "openbox.h"
   2 #include "config.h"
   3 #include "xerror.h"
   4 #include "action.h"
   5 #include "event.h"
   6 #include "client.h"
   7 #include "prop.h"
   8 #include "grab.h"
   9 #include "frame.h"
  10 #include "translate.h"
  11 #include "mouse.h"
  12 #include <glib.h>
  13
  14 typedef struct {
  15     guint state;
  16     guint button;
  17     GSList *actions[OB_NUM_MOUSE_ACTIONS]; /* lists of Action pointers */
  18 } ObMouseBinding;
  19
  20 #define FRAME_CONTEXT(co, cl) ((cl && cl->type != OB_CLIENT_TYPE_DESKTOP) ? \
  21                                co == OB_FRAME_CONTEXT_FRAME : FALSE)
  22 #define CLIENT_CONTEXT(co, cl) ((cl && cl->type == OB_CLIENT_TYPE_DESKTOP) ? \
  23                                 co == OB_FRAME_CONTEXT_DESKTOP : \
  24                                 co == OB_FRAME_CONTEXT_CLIENT)
  25
  26 /* Array of GSList*s of PointerBinding*s. */
  27 static GSList *bound_contexts[OB_FRAME_NUM_CONTEXTS];
  28
  29 void mouse_grab_for_client(ObClient *client, gboolean grab)
  30 {
  31     int i;
  32     GSList *it;
  33
  34     for (i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i)
  35         for (it = bound_contexts[i]; it != NULL; it = g_slist_next(it)) {
  36             /* grab/ungrab the button */
  37             ObMouseBinding *b = it->data;
  38             Window win;
  39             int mode;
  40             unsigned int mask;
  41
  42             if (FRAME_CONTEXT(i, client)) {
  43                 win = client->frame->window;
  44                 mode = GrabModeAsync;
  45                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
  46             } else if (CLIENT_CONTEXT(i, client)) {
  47                 win = client->frame->plate;
  48                 mode = GrabModeSync; /* this is handled in event */
  49                 mask = ButtonPressMask; /* can't catch more than this with Sync
  50                                            mode the release event is
  51                                            manufactured in event() */
  52             } else continue;
  53
  54             if (grab)
  55                 grab_button_full(b->button, b->state, win, mask, mode,
  56                                  OB_CURSOR_NONE);
  57             else
  58                 ungrab_button(b->button, b->state, win);
  59         }
  60 }
  61
  62 static void grab_all_clients(gboolean grab)
  63 {
  64     GList *it;
  65
  66     for (it = client_list; it != NULL; it = it->next)
  67         mouse_grab_for_client(it->data, grab);
  68 }
  69
  70 static void clearall()
  71 {
  72     int i;
  73     GSList *it;
  74
  75     for(i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i) {
  76         for (it = bound_contexts[i]; it != NULL; it = it->next) {
  77             ObMouseBinding *b = it->data;
  78             int j;
  79
  80             for (j = 0; j < OB_NUM_MOUSE_ACTIONS; ++j) {
  81                 GSList *it;
  82
  83                 for (it = b->actions[j]; it; it = it->next)
  84                     action_free(it->data);
  85                 g_slist_free(b->actions[j]);
  86             }
  87             g_free(b);
  88         }
  89         g_slist_free(bound_contexts[i]);
  90         bound_contexts[i] = NULL;
  91     }
  92 }
  93
  94 static gboolean fire_binding(ObMouseAction a, ObFrameContext context,
  95                              ObClient *c, guint state,
  96                              guint button, int x, int y)
  97 {
  98     GSList *it;
  99     ObMouseBinding *b;
 100
 101     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 102         b = it->data;
 103         if (b->state == state && b->button == button)
 104             break;
 105     }
 106     /* if not bound, then nothing to do! */
 107     if (it == NULL) return FALSE;
 108
 109     for (it = b->actions[a]; it; it = it->next)
 110         action_run_mouse(it->data, c, context, state, button, x, y);
 111     return TRUE;
 112 }
 113
 114 void mouse_event(ObClient *client, ObFrameContext context, XEvent *e)
 115 {
 116     static Time ltime;
 117     static guint button = 0, state = 0, lbutton = 0;
 118
 119     static Window lwindow = None;
 120     static int px, py;
 121     gboolean click = FALSE;
 122     gboolean dclick = FALSE;
 123
 124     switch (e->type) {
 125     case ButtonPress:
 126         px = e->xbutton.x_root;
 127         py = e->xbutton.y_root;
 128         button = e->xbutton.button;
 129         state = e->xbutton.state;
 130
 131         fire_binding(OB_MOUSE_ACTION_PRESS, context,
 132                      client, e->xbutton.state,
 133                      e->xbutton.button,
 134                      e->xbutton.x_root, e->xbutton.y_root);
 135
 136         if (CLIENT_CONTEXT(context, client)) {
 137             /* Replay the event, so it goes to the client*/
 138             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 139             /* Fall through to the release case! */
 140         } else
 141             break;
 142
 143     case ButtonRelease:
 144         if (e->xbutton.button == button) {
 145             /* clicks are only valid if its released over the window */
 146             int junk1, junk2;
 147             Window wjunk;
 148             guint ujunk, b, w, h;
 149             xerror_set_ignore(TRUE);
 150             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 151                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 152             xerror_set_ignore(FALSE);
 153             if (junk1) {
 154                 if (e->xbutton.x >= (signed)-b &&
 155                     e->xbutton.y >= (signed)-b &&
 156                     e->xbutton.x < (signed)(w+b) &&
 157                     e->xbutton.y < (signed)(h+b)) {
 158                     click = TRUE;
 159                     /* double clicks happen if there were 2 in a row! */
 160                     if (lbutton == button &&
 161                         lwindow == e->xbutton.window &&
 162                         e->xbutton.time - config_mouse_dclicktime <=
 163                         ltime) {
 164                         dclick = TRUE;
 165                         lbutton = 0;
 166                     } else {
 167                         lbutton = button;
 168                         lwindow = e->xbutton.window;
 169                     }
 170                 } else {
 171                     lbutton = 0;
 172                     lwindow = None;
 173                 }
 174             }
 175
 176             button = 0;
 177             state = 0;
 178             ltime = e->xbutton.time;
 179         }
 180         fire_binding(OB_MOUSE_ACTION_RELEASE, context,
 181                      client, e->xbutton.state,
 182                      e->xbutton.button,
 183                      e->xbutton.x_root, e->xbutton.y_root);
 184         if (click)
 185             fire_binding(OB_MOUSE_ACTION_CLICK, context,
 186                          client, e->xbutton.state,
 187                          e->xbutton.button,
 188                          e->xbutton.x_root,
 189                          e->xbutton.y_root);
 190         if (dclick)
 191             fire_binding(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 192                          client, e->xbutton.state,
 193                          e->xbutton.button,
 194                          e->xbutton.x_root,
 195                          e->xbutton.y_root);
 196         break;
 197
 198     case MotionNotify:
 199         if (button) {
 200             if (ABS(e->xmotion.x_root - px) >=
 201                 config_mouse_threshold ||
 202                 ABS(e->xmotion.y_root - py) >=
 203                 config_mouse_threshold) {
 204
 205                 /* You can't drag on buttons */
 206                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 207                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 208                     context == OB_FRAME_CONTEXT_SHADE ||
 209                     context == OB_FRAME_CONTEXT_ICONIFY ||
 210                     context == OB_FRAME_CONTEXT_ICON ||
 211                     context == OB_FRAME_CONTEXT_CLOSE)
 212                     break;
 213
 214                 fire_binding(OB_MOUSE_ACTION_MOTION, context,
 215                              client, state, button, px, py);
 216                 button = 0;
 217                 state = 0;
 218             }
 219         }
 220         break;
 221
 222     default:
 223         g_assert_not_reached();
 224     }
 225 }
 226
 227 gboolean mouse_bind(char *buttonstr, char *contextstr, ObMouseAction mact,
 228                     ObAction *action)
 229 {
 230     guint state, button;
 231     ObFrameContext context;
 232     ObMouseBinding *b;
 233     GSList *it;
 234
 235     if (!translate_button(buttonstr, &state, &button)) {
 236         g_warning("invalid button '%s'", buttonstr);
 237         return FALSE;
 238     }
 239
 240     contextstr = g_ascii_strdown(contextstr, -1);
 241     context = frame_context_from_string(contextstr);
 242     if (!context) {
 243         g_warning("invalid context '%s'", contextstr);
 244         g_free(contextstr);
 245         return FALSE;
 246     }
 247     g_free(contextstr);
 248
 249     for (it = bound_contexts[context]; it != NULL; it = it->next){
 250         b = it->data;
 251         if (b->state == state && b->button == button) {
 252             b->actions[mact] = g_slist_append(b->actions[mact], action);
 253             return TRUE;
 254         }
 255     }
 256
 257     /* when there are no modifiers in the binding, then the action cannot
 258        be interactive */
 259     if (!state && action->data.any.interactive) {
 260         action->data.any.interactive = FALSE;
 261         action->data.inter.final = TRUE;
 262     }
 263
 264     /* add the binding */
 265     b = g_new0(ObMouseBinding, 1);
 266     b->state = state;
 267     b->button = button;
 268     b->actions[mact] = g_slist_append(NULL, action);
 269     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 270
 271     return TRUE;
 272 }
 273
 274 void mouse_startup(gboolean reconfig)
 275 {
 276     grab_all_clients(TRUE);
 277 }
 278
 279 void mouse_shutdown(gboolean reconfig)
 280 {
 281     grab_all_clients(FALSE);
 282     clearall();
 283 }