xref: /openbmc/qemu/ui/input-legacy.c (revision 87c9b5e0) 
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 "qemu/osdep.h"
26 #include "sysemu/sysemu.h"
27 #include "ui/console.h"
28 #include "qmp-commands.h"
29 #include "qapi-types.h"
30 #include "ui/keymaps.h"
31 #include "ui/input.h"
32 
33 struct QEMUPutMouseEntry {
34     QEMUPutMouseEvent *qemu_put_mouse_event;
35     void *qemu_put_mouse_event_opaque;
36     int qemu_put_mouse_event_absolute;
37 
38     /* new input core */
39     QemuInputHandler h;
40     QemuInputHandlerState *s;
41     int axis[INPUT_AXIS__MAX];
42     int buttons;
43 };
44 
45 struct QEMUPutKbdEntry {
46     QEMUPutKBDEvent *put_kbd;
47     void *opaque;
48     QemuInputHandlerState *s;
49 };
50 
51 struct QEMUPutLEDEntry {
52     QEMUPutLEDEvent *put_led;
53     void *opaque;
54     QTAILQ_ENTRY(QEMUPutLEDEntry) next;
55 };
56 
57 static QTAILQ_HEAD(, QEMUPutLEDEntry) led_handlers =
58     QTAILQ_HEAD_INITIALIZER(led_handlers);
59 
60 int index_from_key(const char *key, size_t key_length)
61 {
62     int i;
63 
64     for (i = 0; QKeyCode_lookup[i] != NULL; i++) {
65         if (!strncmp(key, QKeyCode_lookup[i], key_length) &&
66             !QKeyCode_lookup[i][key_length]) {
67             break;
68         }
69     }
70 
71     /* Return Q_KEY_CODE__MAX if the key is invalid */
72     return i;
73 }
74 
75 static KeyValue *copy_key_value(KeyValue *src)
76 {
77     KeyValue *dst = g_new(KeyValue, 1);
78     memcpy(dst, src, sizeof(*src));
79     return dst;
80 }
81 
82 void qmp_send_key(KeyValueList *keys, bool has_hold_time, int64_t hold_time,
83                   Error **errp)
84 {
85     KeyValueList *p;
86     KeyValue **up = NULL;
87     int count = 0;
88 
89     if (!has_hold_time) {
90         hold_time = 0; /* use default */
91     }
92 
93     for (p = keys; p != NULL; p = p->next) {
94         qemu_input_event_send_key(NULL, copy_key_value(p->value), true);
95         qemu_input_event_send_key_delay(hold_time);
96         up = g_realloc(up, sizeof(*up) * (count+1));
97         up[count] = copy_key_value(p->value);
98         count++;
99     }
100     while (count) {
101         count--;
102         qemu_input_event_send_key(NULL, up[count], false);
103         qemu_input_event_send_key_delay(hold_time);
104     }
105     g_free(up);
106 }
107 
108 static void legacy_kbd_event(DeviceState *dev, QemuConsole *src,
109                              InputEvent *evt)
110 {
111     QEMUPutKbdEntry *entry = (QEMUPutKbdEntry *)dev;
112     int scancodes[3], i, count;
113 
114     if (!entry || !entry->put_kbd) {
115         return;
116     }
117     count = qemu_input_key_value_to_scancode(evt->u.key->key,
118                                              evt->u.key->down,
119                                              scancodes);
120     for (i = 0; i < count; i++) {
121         entry->put_kbd(entry->opaque, scancodes[i]);
122     }
123 }
124 
125 static QemuInputHandler legacy_kbd_handler = {
126     .name  = "legacy-kbd",
127     .mask  = INPUT_EVENT_MASK_KEY,
128     .event = legacy_kbd_event,
129 };
130 
131 QEMUPutKbdEntry *qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
132 {
133     QEMUPutKbdEntry *entry;
134 
135     entry = g_new0(QEMUPutKbdEntry, 1);
136     entry->put_kbd = func;
137     entry->opaque = opaque;
138     entry->s = qemu_input_handler_register((DeviceState *)entry,
139                                            &legacy_kbd_handler);
140     qemu_input_handler_activate(entry->s);
141     return entry;
142 }
143 
144 static void legacy_mouse_event(DeviceState *dev, QemuConsole *src,
145                                InputEvent *evt)
146 {
147     static const int bmap[INPUT_BUTTON__MAX] = {
148         [INPUT_BUTTON_LEFT]   = MOUSE_EVENT_LBUTTON,
149         [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
150         [INPUT_BUTTON_RIGHT]  = MOUSE_EVENT_RBUTTON,
151     };
152     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
153 
154     switch (evt->type) {
155     case INPUT_EVENT_KIND_BTN:
156         if (evt->u.btn->down) {
157             s->buttons |= bmap[evt->u.btn->button];
158         } else {
159             s->buttons &= ~bmap[evt->u.btn->button];
160         }
161         if (evt->u.btn->down && evt->u.btn->button == INPUT_BUTTON_WHEELUP) {
162             s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
163                                     s->axis[INPUT_AXIS_X],
164                                     s->axis[INPUT_AXIS_Y],
165                                     -1,
166                                     s->buttons);
167         }
168         if (evt->u.btn->down &&
169             evt->u.btn->button == INPUT_BUTTON_WHEELDOWN) {
170             s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
171                                     s->axis[INPUT_AXIS_X],
172                                     s->axis[INPUT_AXIS_Y],
173                                     1,
174                                     s->buttons);
175         }
176         break;
177     case INPUT_EVENT_KIND_ABS:
178         s->axis[evt->u.abs->axis] = evt->u.abs->value;
179         break;
180     case INPUT_EVENT_KIND_REL:
181         s->axis[evt->u.rel->axis] += evt->u.rel->value;
182         break;
183     default:
184         break;
185     }
186 }
187 
188 static void legacy_mouse_sync(DeviceState *dev)
189 {
190     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
191 
192     s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
193                             s->axis[INPUT_AXIS_X],
194                             s->axis[INPUT_AXIS_Y],
195                             0,
196                             s->buttons);
197 
198     if (!s->qemu_put_mouse_event_absolute) {
199         s->axis[INPUT_AXIS_X] = 0;
200         s->axis[INPUT_AXIS_Y] = 0;
201     }
202 }
203 
204 QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
205                                                 void *opaque, int absolute,
206                                                 const char *name)
207 {
208     QEMUPutMouseEntry *s;
209 
210     s = g_new0(QEMUPutMouseEntry, 1);
211 
212     s->qemu_put_mouse_event = func;
213     s->qemu_put_mouse_event_opaque = opaque;
214     s->qemu_put_mouse_event_absolute = absolute;
215 
216     s->h.name = name;
217     s->h.mask = INPUT_EVENT_MASK_BTN |
218         (absolute ? INPUT_EVENT_MASK_ABS : INPUT_EVENT_MASK_REL);
219     s->h.event = legacy_mouse_event;
220     s->h.sync = legacy_mouse_sync;
221     s->s = qemu_input_handler_register((DeviceState *)s,
222                                        &s->h);
223 
224     return s;
225 }
226 
227 void qemu_activate_mouse_event_handler(QEMUPutMouseEntry *entry)
228 {
229     qemu_input_handler_activate(entry->s);
230 }
231 
232 void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry)
233 {
234     qemu_input_handler_unregister(entry->s);
235 
236     g_free(entry);
237 }
238 
239 QEMUPutLEDEntry *qemu_add_led_event_handler(QEMUPutLEDEvent *func,
240                                             void *opaque)
241 {
242     QEMUPutLEDEntry *s;
243 
244     s = g_new0(QEMUPutLEDEntry, 1);
245 
246     s->put_led = func;
247     s->opaque = opaque;
248     QTAILQ_INSERT_TAIL(&led_handlers, s, next);
249     return s;
250 }
251 
252 void qemu_remove_led_event_handler(QEMUPutLEDEntry *entry)
253 {
254     if (entry == NULL)
255         return;
256     QTAILQ_REMOVE(&led_handlers, entry, next);
257     g_free(entry);
258 }
259 
260 void kbd_put_ledstate(int ledstate)
261 {
262     QEMUPutLEDEntry *cursor;
263 
264     QTAILQ_FOREACH(cursor, &led_handlers, next) {
265         cursor->put_led(cursor->opaque, ledstate);
266     }
267 }
268