obt/xevent.c (raw)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 |
/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*- obt/xevent.c for the Openbox window manager Copyright (c) 2007 Dana Jansens This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. See the COPYING file for a copy of the GNU General Public License. */ #include "obt/xevent.h" #include "obt/mainloop.h" #include "obt/util.h" typedef struct _ObtXEventBinding ObtXEventBinding; struct _ObtXEventHandler { gint ref; ObtMainLoop *loop; /* An array of hash tables where the key is the window, and the value is the ObtXEventBinding */ GHashTable **bindings; gint num_event_types; /* the length of the bindings array */ }; struct _ObtXEventBinding { Window win; ObtXEventCallback func; gpointer data; }; static void xevent_handler(const XEvent *e, gpointer data); static guint window_hash(Window *w) { return *w; } static gboolean window_comp(Window *w1, Window *w2) { return *w1 == *w2; } static void binding_free(gpointer b); ObtXEventHandler* xevent_new(void) { ObtXEventHandler *h; h = g_slice_new0(ObtXEventHandler); h->ref = 1; return h; } void xevent_ref(ObtXEventHandler *h) { ++h->ref; } void xevent_unref(ObtXEventHandler *h) { if (h && --h->ref == 0) { gint i; if (h->loop) obt_main_loop_x_remove(h->loop, xevent_handler); for (i = 0; i < h->num_event_types; ++i) g_hash_table_destroy(h->bindings[i]); g_free(h->bindings); g_slice_free(ObtXEventHandler, h); } } void xevent_register(ObtXEventHandler *h, ObtMainLoop *loop) { h->loop = loop; obt_main_loop_x_add(loop, xevent_handler, h, NULL); } void xevent_set_handler(ObtXEventHandler *h, gint type, Window win, ObtXEventCallback func, gpointer data) { ObtXEventBinding *b; g_assert(func); /* make sure we have a spot for the event */ if (type + 1 < h->num_event_types) { gint i; h->bindings = g_renew(GHashTable*, h->bindings, type + 1); for (i = h->num_event_types; i < type + 1; ++i) h->bindings[i] = g_hash_table_new_full((GHashFunc)window_hash, (GEqualFunc)window_comp, NULL, binding_free); h->num_event_types = type + 1; } b = g_slice_new(ObtXEventBinding); b->win = win; b->func = func; b->data = data; g_hash_table_replace(h->bindings[type], &b->win, b); } static void binding_free(gpointer b) { g_slice_free(ObtXEventBinding, b); } void xevent_remove_handler(ObtXEventHandler *h, gint type, Window win) { g_assert(type < h->num_event_types); g_assert(win); g_hash_table_remove(h->bindings[type], &win); } static void xevent_handler(const XEvent *e, gpointer data) { ObtXEventHandler *h; ObtXEventBinding *b; h = data; if (e->type < h->num_event_types) { const gint all = OBT_XEVENT_ALL_WINDOWS; /* run the all_windows handler first */ b = g_hash_table_lookup(h->bindings[e->xany.type], &all); if (b) b->func(e, b->data); /* then run the per-window handler */ b = g_hash_table_lookup(h->bindings[e->xany.type], &e->xany.window); if (b) b->func(e, b->data); } else g_message("Unhandled X Event type %d", e->xany.type); } |