xref: /openbmc/qemu/ui/input-legacy.c (revision 406d2aa2) 
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; i < Q_KEY_CODE__MAX; i++) {
65         if (!strncmp(key, QKeyCode_str(i), key_length) &&
66             !QKeyCode_str(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     if (dst->type == KEY_VALUE_KIND_NUMBER) {
80         QKeyCode code = qemu_input_key_number_to_qcode(dst->u.number.data);
81         dst->type = KEY_VALUE_KIND_QCODE;
82         dst->u.qcode.data = code;
83     }
84     return dst;
85 }
86 
87 void qmp_send_key(KeyValueList *keys, bool has_hold_time, int64_t hold_time,
88                   Error **errp)
89 {
90     KeyValueList *p;
91     KeyValue **up = NULL;
92     int count = 0;
93 
94     if (!has_hold_time) {
95         hold_time = 0; /* use default */
96     }
97 
98     for (p = keys; p != NULL; p = p->next) {
99         qemu_input_event_send_key(NULL, copy_key_value(p->value), true);
100         qemu_input_event_send_key_delay(hold_time);
101         up = g_realloc(up, sizeof(*up) * (count+1));
102         up[count] = copy_key_value(p->value);
103         count++;
104     }
105     while (count) {
106         count--;
107         qemu_input_event_send_key(NULL, up[count], false);
108         qemu_input_event_send_key_delay(hold_time);
109     }
110     g_free(up);
111 }
112 
113 static void legacy_kbd_event(DeviceState *dev, QemuConsole *src,
114                              InputEvent *evt)
115 {
116     QEMUPutKbdEntry *entry = (QEMUPutKbdEntry *)dev;
117     int scancodes[3], i, count;
118     InputKeyEvent *key = evt->u.key.data;
119 
120     if (!entry || !entry->put_kbd) {
121         return;
122     }
123     count = qemu_input_key_value_to_scancode(key->key,
124                                              key->down,
125                                              scancodes);
126     for (i = 0; i < count; i++) {
127         entry->put_kbd(entry->opaque, scancodes[i]);
128     }
129 }
130 
131 static QemuInputHandler legacy_kbd_handler = {
132     .name  = "legacy-kbd",
133     .mask  = INPUT_EVENT_MASK_KEY,
134     .event = legacy_kbd_event,
135 };
136 
137 QEMUPutKbdEntry *qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
138 {
139     QEMUPutKbdEntry *entry;
140 
141     entry = g_new0(QEMUPutKbdEntry, 1);
142     entry->put_kbd = func;
143     entry->opaque = opaque;
144     entry->s = qemu_input_handler_register((DeviceState *)entry,
145                                            &legacy_kbd_handler);
146     qemu_input_handler_activate(entry->s);
147     return entry;
148 }
149 
150 static void legacy_mouse_event(DeviceState *dev, QemuConsole *src,
151                                InputEvent *evt)
152 {
153     static const int bmap[INPUT_BUTTON__MAX] = {
154         [INPUT_BUTTON_LEFT]   = MOUSE_EVENT_LBUTTON,
155         [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
156         [INPUT_BUTTON_RIGHT]  = MOUSE_EVENT_RBUTTON,
157     };
158     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
159     InputBtnEvent *btn;
160     InputMoveEvent *move;
161 
162     switch (evt->type) {
163     case INPUT_EVENT_KIND_BTN:
164         btn = evt->u.btn.data;
165         if (btn->down) {
166             s->buttons |= bmap[btn->button];
167         } else {
168             s->buttons &= ~bmap[btn->button];
169         }
170         if (btn->down && btn->button == INPUT_BUTTON_WHEEL_UP) {
171             s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
172                                     s->axis[INPUT_AXIS_X],
173                                     s->axis[INPUT_AXIS_Y],
174                                     -1,
175                                     s->buttons);
176         }
177         if (btn->down && btn->button == INPUT_BUTTON_WHEEL_DOWN) {
178             s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
179                                     s->axis[INPUT_AXIS_X],
180                                     s->axis[INPUT_AXIS_Y],
181                                     1,
182                                     s->buttons);
183         }
184         break;
185     case INPUT_EVENT_KIND_ABS:
186         move = evt->u.abs.data;
187         s->axis[move->axis] = move->value;
188         break;
189     case INPUT_EVENT_KIND_REL:
190         move = evt->u.rel.data;
191         s->axis[move->axis] += move->value;
192         break;
193     default:
194         break;
195     }
196 }
197 
198 static void legacy_mouse_sync(DeviceState *dev)
199 {
200     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
201 
202     s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
203                             s->axis[INPUT_AXIS_X],
204                             s->axis[INPUT_AXIS_Y],
205                             0,
206                             s->buttons);
207 
208     if (!s->qemu_put_mouse_event_absolute) {
209         s->axis[INPUT_AXIS_X] = 0;
210         s->axis[INPUT_AXIS_Y] = 0;
211     }
212 }
213 
214 QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
215                                                 void *opaque, int absolute,
216                                                 const char *name)
217 {
218     QEMUPutMouseEntry *s;
219 
220     s = g_new0(QEMUPutMouseEntry, 1);
221 
222     s->qemu_put_mouse_event = func;
223     s->qemu_put_mouse_event_opaque = opaque;
224     s->qemu_put_mouse_event_absolute = absolute;
225 
226     s->h.name = name;
227     s->h.mask = INPUT_EVENT_MASK_BTN |
228         (absolute ? INPUT_EVENT_MASK_ABS : INPUT_EVENT_MASK_REL);
229     s->h.event = legacy_mouse_event;
230     s->h.sync = legacy_mouse_sync;
231     s->s = qemu_input_handler_register((DeviceState *)s,
232                                        &s->h);
233 
234     return s;
235 }
236 
237 void qemu_activate_mouse_event_handler(QEMUPutMouseEntry *entry)
238 {
239     qemu_input_handler_activate(entry->s);
240 }
241 
242 void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry)
243 {
244     qemu_input_handler_unregister(entry->s);
245 
246     g_free(entry);
247 }
248 
249 QEMUPutLEDEntry *qemu_add_led_event_handler(QEMUPutLEDEvent *func,
250                                             void *opaque)
251 {
252     QEMUPutLEDEntry *s;
253 
254     s = g_new0(QEMUPutLEDEntry, 1);
255 
256     s->put_led = func;
257     s->opaque = opaque;
258     QTAILQ_INSERT_TAIL(&led_handlers, s, next);
259     return s;
260 }
261 
262 void qemu_remove_led_event_handler(QEMUPutLEDEntry *entry)
263 {
264     if (entry == NULL)
265         return;
266     QTAILQ_REMOVE(&led_handlers, entry, next);
267     g_free(entry);
268 }
269 
270 void kbd_put_ledstate(int ledstate)
271 {
272     QEMUPutLEDEntry *cursor;
273 
274     QTAILQ_FOREACH(cursor, &led_handlers, next) {
275         cursor->put_led(cursor->opaque, ledstate);
276     }
277 }
278