input.c

   1 /*
   2  * QEMU System Emulator
   3  *
   4  * Copyright (c) 2003-2008 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "sysemu.h"
  26 #include "net.h"
  27 #include "monitor.h"
  28 #include "console.h"
  29 #include "qjson.h"
  30
  31 static QEMUPutKBDEvent *qemu_put_kbd_event;
  32 static void *qemu_put_kbd_event_opaque;
  33 static QTAILQ_HEAD(, QEMUPutLEDEntry) led_handlers = QTAILQ_HEAD_INITIALIZER(led_handlers);
  34 static QTAILQ_HEAD(, QEMUPutMouseEntry) mouse_handlers =
  35     QTAILQ_HEAD_INITIALIZER(mouse_handlers);
  36 static NotifierList mouse_mode_notifiers =
  37     NOTIFIER_LIST_INITIALIZER(mouse_mode_notifiers);
  38
  39 void qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
  40 {
  41     qemu_put_kbd_event_opaque = opaque;
  42     qemu_put_kbd_event = func;
  43 }
  44
  45 static void check_mode_change(void)
  46 {
  47     static int current_is_absolute, current_has_absolute;
  48     int is_absolute;
  49     int has_absolute;
  50
  51     is_absolute = kbd_mouse_is_absolute();
  52     has_absolute = kbd_mouse_has_absolute();
  53
  54     if (is_absolute != current_is_absolute ||
  55         has_absolute != current_has_absolute) {
  56         notifier_list_notify(&mouse_mode_notifiers);
  57     }
  58
  59     current_is_absolute = is_absolute;
  60     current_has_absolute = has_absolute;
  61 }
  62
  63 QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
  64                                                 void *opaque, int absolute,
  65                                                 const char *name)
  66 {
  67     QEMUPutMouseEntry *s;
  68     static int mouse_index = 0;
  69
  70     s = qemu_mallocz(sizeof(QEMUPutMouseEntry));
  71
  72     s->qemu_put_mouse_event = func;
  73     s->qemu_put_mouse_event_opaque = opaque;
  74     s->qemu_put_mouse_event_absolute = absolute;
  75     s->qemu_put_mouse_event_name = qemu_strdup(name);
  76     s->index = mouse_index++;
  77
  78     QTAILQ_INSERT_TAIL(&mouse_handlers, s, node);
  79
  80     check_mode_change();
  81
  82     return s;
  83 }
  84
  85 void qemu_activate_mouse_event_handler(QEMUPutMouseEntry *entry)
  86 {
  87     QTAILQ_REMOVE(&mouse_handlers, entry, node);
  88     QTAILQ_INSERT_HEAD(&mouse_handlers, entry, node);
  89
  90     check_mode_change();
  91 }
  92
  93 void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry)
  94 {
  95     QTAILQ_REMOVE(&mouse_handlers, entry, node);
  96
  97     qemu_free(entry->qemu_put_mouse_event_name);
  98     qemu_free(entry);
  99
 100     check_mode_change();
 101 }
 102
 103 QEMUPutLEDEntry *qemu_add_led_event_handler(QEMUPutLEDEvent *func,
 104                                             void *opaque)
 105 {
 106     QEMUPutLEDEntry *s;
 107
 108     s = qemu_mallocz(sizeof(QEMUPutLEDEntry));
 109
 110     s->put_led = func;
 111     s->opaque = opaque;
 112     QTAILQ_INSERT_TAIL(&led_handlers, s, next);
 113     return s;
 114 }
 115
 116 void qemu_remove_led_event_handler(QEMUPutLEDEntry *entry)
 117 {
 118     if (entry == NULL)
 119         return;
 120     QTAILQ_REMOVE(&led_handlers, entry, next);
 121     qemu_free(entry);
 122 }
 123
 124 void kbd_put_keycode(int keycode)
 125 {
 126     if (qemu_put_kbd_event) {
 127         qemu_put_kbd_event(qemu_put_kbd_event_opaque, keycode);
 128     }
 129 }
 130
 131 void kbd_put_ledstate(int ledstate)
 132 {
 133     QEMUPutLEDEntry *cursor;
 134
 135     QTAILQ_FOREACH(cursor, &led_handlers, next) {
 136         cursor->put_led(cursor->opaque, ledstate);
 137     }
 138 }
 139
 140 void kbd_mouse_event(int dx, int dy, int dz, int buttons_state)
 141 {
 142     QEMUPutMouseEntry *entry;
 143     QEMUPutMouseEvent *mouse_event;
 144     void *mouse_event_opaque;
 145     int width;
 146
 147     if (QTAILQ_EMPTY(&mouse_handlers)) {
 148         return;
 149     }
 150
 151     entry = QTAILQ_FIRST(&mouse_handlers);
 152
 153     mouse_event = entry->qemu_put_mouse_event;
 154     mouse_event_opaque = entry->qemu_put_mouse_event_opaque;
 155
 156     if (mouse_event) {
 157         if (graphic_rotate) {
 158             if (entry->qemu_put_mouse_event_absolute)
 159                 width = 0x7fff;
 160             else
 161                 width = graphic_width - 1;
 162             mouse_event(mouse_event_opaque,
 163                         width - dy, dx, dz, buttons_state);
 164         } else
 165             mouse_event(mouse_event_opaque,
 166                         dx, dy, dz, buttons_state);
 167     }
 168 }
 169
 170 int kbd_mouse_is_absolute(void)
 171 {
 172     if (QTAILQ_EMPTY(&mouse_handlers)) {
 173         return 0;
 174     }
 175
 176     return QTAILQ_FIRST(&mouse_handlers)->qemu_put_mouse_event_absolute;
 177 }
 178
 179 int kbd_mouse_has_absolute(void)
 180 {
 181     QEMUPutMouseEntry *entry;
 182
 183     QTAILQ_FOREACH(entry, &mouse_handlers, node) {
 184         if (entry->qemu_put_mouse_event_absolute) {
 185             return 1;
 186         }
 187     }
 188
 189     return 0;
 190 }
 191
 192 static void info_mice_iter(QObject *data, void *opaque)
 193 {
 194     QDict *mouse;
 195     Monitor *mon = opaque;
 196
 197     mouse = qobject_to_qdict(data);
 198     monitor_printf(mon, "%c Mouse #%" PRId64 ": %s%s\n",
 199                   (qdict_get_bool(mouse, "current") ? '*' : ' '),
 200                    qdict_get_int(mouse, "index"), qdict_get_str(mouse, "name"),
 201                    qdict_get_bool(mouse, "absolute") ? " (absolute)" : "");
 202 }
 203
 204 void do_info_mice_print(Monitor *mon, const QObject *data)
 205 {
 206     QList *mice_list;
 207
 208     mice_list = qobject_to_qlist(data);
 209     if (qlist_empty(mice_list)) {
 210         monitor_printf(mon, "No mouse devices connected\n");
 211         return;
 212     }
 213
 214     qlist_iter(mice_list, info_mice_iter, mon);
 215 }
 216
 217 /**
 218  * do_info_mice(): Show VM mice information
 219  *
 220  * Each mouse is represented by a QDict, the returned QObject is a QList of
 221  * all mice.
 222  *
 223  * The mouse QDict contains the following:
 224  *
 225  * - "name": mouse's name
 226  * - "index": mouse's index
 227  * - "current": true if this mouse is receiving events, false otherwise
 228  * - "absolute": true if the mouse generates absolute input events
 229  *
 230  * Example:
 231  *
 232  * [ { "name": "QEMU Microsoft Mouse", "index": 0, "current": false, "absolute": false },
 233  *   { "name": "QEMU PS/2 Mouse", "index": 1, "current": true, "absolute": true } ]
 234  */
 235 void do_info_mice(Monitor *mon, QObject **ret_data)
 236 {
 237     QEMUPutMouseEntry *cursor;
 238     QList *mice_list;
 239     int current;
 240
 241     mice_list = qlist_new();
 242
 243     if (QTAILQ_EMPTY(&mouse_handlers)) {
 244         goto out;
 245     }
 246
 247     current = QTAILQ_FIRST(&mouse_handlers)->index;
 248
 249     QTAILQ_FOREACH(cursor, &mouse_handlers, node) {
 250         QObject *obj;
 251         obj = qobject_from_jsonf("{ 'name': %s,"
 252                                  "  'index': %d,"
 253                                  "  'current': %i,"
 254                                  "  'absolute': %i }",
 255                                  cursor->qemu_put_mouse_event_name,
 256                                  cursor->index,
 257                                  cursor->index == current,
 258                                  !!cursor->qemu_put_mouse_event_absolute);
 259         qlist_append_obj(mice_list, obj);
 260     }
 261
 262 out:
 263     *ret_data = QOBJECT(mice_list);
 264 }
 265
 266 void do_mouse_set(Monitor *mon, const QDict *qdict)
 267 {
 268     QEMUPutMouseEntry *cursor;
 269     int index = qdict_get_int(qdict, "index");
 270     int found = 0;
 271
 272     if (QTAILQ_EMPTY(&mouse_handlers)) {
 273         monitor_printf(mon, "No mouse devices connected\n");
 274         return;
 275     }
 276
 277     QTAILQ_FOREACH(cursor, &mouse_handlers, node) {
 278         if (cursor->index == index) {
 279             found = 1;
 280             qemu_activate_mouse_event_handler(cursor);
 281             break;
 282         }
 283     }
 284
 285     if (!found) {
 286         monitor_printf(mon, "Mouse at given index not found\n");
 287     }
 288
 289     check_mode_change();
 290 }
 291
 292 void qemu_add_mouse_mode_change_notifier(Notifier *notify)
 293 {
 294     notifier_list_add(&mouse_mode_notifiers, notify);
 295 }
 296
 297 void qemu_remove_mouse_mode_change_notifier(Notifier *notify)
 298 {
 299     notifier_list_remove(&mouse_mode_notifiers, notify);
 300 }