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 "error.h"
  30 #include "qmp-commands.h"
  31
  32 static QEMUPutKBDEvent *qemu_put_kbd_event;
  33 static void *qemu_put_kbd_event_opaque;
  34 static QTAILQ_HEAD(, QEMUPutLEDEntry) led_handlers = QTAILQ_HEAD_INITIALIZER(led_handlers);
  35 static QTAILQ_HEAD(, QEMUPutMouseEntry) mouse_handlers =
  36     QTAILQ_HEAD_INITIALIZER(mouse_handlers);
  37 static NotifierList mouse_mode_notifiers =
  38     NOTIFIER_LIST_INITIALIZER(mouse_mode_notifiers);
  39
  40 void qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
  41 {
  42     qemu_put_kbd_event_opaque = opaque;
  43     qemu_put_kbd_event = func;
  44 }
  45
  46 void qemu_remove_kbd_event_handler(void)
  47 {
  48     qemu_put_kbd_event_opaque = NULL;
  49     qemu_put_kbd_event = NULL;
  50 }
  51
  52 static void check_mode_change(void)
  53 {
  54     static int current_is_absolute, current_has_absolute;
  55     int is_absolute;
  56     int has_absolute;
  57
  58     is_absolute = kbd_mouse_is_absolute();
  59     has_absolute = kbd_mouse_has_absolute();
  60
  61     if (is_absolute != current_is_absolute ||
  62         has_absolute != current_has_absolute) {
  63         notifier_list_notify(&mouse_mode_notifiers, NULL);
  64     }
  65
  66     current_is_absolute = is_absolute;
  67     current_has_absolute = has_absolute;
  68 }
  69
  70 QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
  71                                                 void *opaque, int absolute,
  72                                                 const char *name)
  73 {
  74     QEMUPutMouseEntry *s;
  75     static int mouse_index = 0;
  76
  77     s = g_malloc0(sizeof(QEMUPutMouseEntry));
  78
  79     s->qemu_put_mouse_event = func;
  80     s->qemu_put_mouse_event_opaque = opaque;
  81     s->qemu_put_mouse_event_absolute = absolute;
  82     s->qemu_put_mouse_event_name = g_strdup(name);
  83     s->index = mouse_index++;
  84
  85     QTAILQ_INSERT_TAIL(&mouse_handlers, s, node);
  86
  87     check_mode_change();
  88
  89     return s;
  90 }
  91
  92 void qemu_activate_mouse_event_handler(QEMUPutMouseEntry *entry)
  93 {
  94     QTAILQ_REMOVE(&mouse_handlers, entry, node);
  95     QTAILQ_INSERT_HEAD(&mouse_handlers, entry, node);
  96
  97     check_mode_change();
  98 }
  99
 100 void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry)
 101 {
 102     QTAILQ_REMOVE(&mouse_handlers, entry, node);
 103
 104     g_free(entry->qemu_put_mouse_event_name);
 105     g_free(entry);
 106
 107     check_mode_change();
 108 }
 109
 110 QEMUPutLEDEntry *qemu_add_led_event_handler(QEMUPutLEDEvent *func,
 111                                             void *opaque)
 112 {
 113     QEMUPutLEDEntry *s;
 114
 115     s = g_malloc0(sizeof(QEMUPutLEDEntry));
 116
 117     s->put_led = func;
 118     s->opaque = opaque;
 119     QTAILQ_INSERT_TAIL(&led_handlers, s, next);
 120     return s;
 121 }
 122
 123 void qemu_remove_led_event_handler(QEMUPutLEDEntry *entry)
 124 {
 125     if (entry == NULL)
 126         return;
 127     QTAILQ_REMOVE(&led_handlers, entry, next);
 128     g_free(entry);
 129 }
 130
 131 void kbd_put_keycode(int keycode)
 132 {
 133     if (qemu_put_kbd_event) {
 134         qemu_put_kbd_event(qemu_put_kbd_event_opaque, keycode);
 135     }
 136 }
 137
 138 void kbd_put_ledstate(int ledstate)
 139 {
 140     QEMUPutLEDEntry *cursor;
 141
 142     QTAILQ_FOREACH(cursor, &led_handlers, next) {
 143         cursor->put_led(cursor->opaque, ledstate);
 144     }
 145 }
 146
 147 void kbd_mouse_event(int dx, int dy, int dz, int buttons_state)
 148 {
 149     QEMUPutMouseEntry *entry;
 150     QEMUPutMouseEvent *mouse_event;
 151     void *mouse_event_opaque;
 152     int width, height;
 153
 154     if (QTAILQ_EMPTY(&mouse_handlers)) {
 155         return;
 156     }
 157
 158     entry = QTAILQ_FIRST(&mouse_handlers);
 159
 160     mouse_event = entry->qemu_put_mouse_event;
 161     mouse_event_opaque = entry->qemu_put_mouse_event_opaque;
 162
 163     if (mouse_event) {
 164         if (entry->qemu_put_mouse_event_absolute) {
 165             width = 0x7fff;
 166             height = 0x7fff;
 167         } else {
 168             width = graphic_width - 1;
 169             height = graphic_height - 1;
 170         }
 171
 172         switch (graphic_rotate) {
 173         case 0:
 174             mouse_event(mouse_event_opaque,
 175                         dx, dy, dz, buttons_state);
 176             break;
 177         case 90:
 178             mouse_event(mouse_event_opaque,
 179                         width - dy, dx, dz, buttons_state);
 180             break;
 181         case 180:
 182             mouse_event(mouse_event_opaque,
 183                         width - dx, height - dy, dz, buttons_state);
 184             break;
 185         case 270:
 186             mouse_event(mouse_event_opaque,
 187                         dy, height - dx, dz, buttons_state);
 188             break;
 189         }
 190     }
 191 }
 192
 193 int kbd_mouse_is_absolute(void)
 194 {
 195     if (QTAILQ_EMPTY(&mouse_handlers)) {
 196         return 0;
 197     }
 198
 199     return QTAILQ_FIRST(&mouse_handlers)->qemu_put_mouse_event_absolute;
 200 }
 201
 202 int kbd_mouse_has_absolute(void)
 203 {
 204     QEMUPutMouseEntry *entry;
 205
 206     QTAILQ_FOREACH(entry, &mouse_handlers, node) {
 207         if (entry->qemu_put_mouse_event_absolute) {
 208             return 1;
 209         }
 210     }
 211
 212     return 0;
 213 }
 214
 215 MouseInfoList *qmp_query_mice(Error **errp)
 216 {
 217     MouseInfoList *mice_list = NULL;
 218     QEMUPutMouseEntry *cursor;
 219     bool current = true;
 220
 221     QTAILQ_FOREACH(cursor, &mouse_handlers, node) {
 222         MouseInfoList *info = g_malloc0(sizeof(*info));
 223         info->value = g_malloc0(sizeof(*info->value));
 224         info->value->name = g_strdup(cursor->qemu_put_mouse_event_name);
 225         info->value->index = cursor->index;
 226         info->value->absolute = !!cursor->qemu_put_mouse_event_absolute;
 227         info->value->current = current;
 228
 229         current = false;
 230
 231         info->next = mice_list;
 232         mice_list = info;
 233     }
 234
 235     return mice_list;
 236 }
 237
 238 void do_mouse_set(Monitor *mon, const QDict *qdict)
 239 {
 240     QEMUPutMouseEntry *cursor;
 241     int index = qdict_get_int(qdict, "index");
 242     int found = 0;
 243
 244     if (QTAILQ_EMPTY(&mouse_handlers)) {
 245         monitor_printf(mon, "No mouse devices connected\n");
 246         return;
 247     }
 248
 249     QTAILQ_FOREACH(cursor, &mouse_handlers, node) {
 250         if (cursor->index == index) {
 251             found = 1;
 252             qemu_activate_mouse_event_handler(cursor);
 253             break;
 254         }
 255     }
 256
 257     if (!found) {
 258         monitor_printf(mon, "Mouse at given index not found\n");
 259     }
 260
 261     check_mode_change();
 262 }
 263
 264 void qemu_add_mouse_mode_change_notifier(Notifier *notify)
 265 {
 266     notifier_list_add(&mouse_mode_notifiers, notify);
 267 }
 268
 269 void qemu_remove_mouse_mode_change_notifier(Notifier *notify)
 270 {
 271     notifier_list_remove(&mouse_mode_notifiers, notify);
 272 }