xref: /openbmc/qemu/ui/input-legacy.c (revision 0ed93f4c) 
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 "qapi/qapi-commands-ui.h"
27 #include "ui/console.h"
28 #include "keymaps.h"
29 #include "ui/input.h"
30 
31 struct QEMUPutMouseEntry {
32     QEMUPutMouseEvent *qemu_put_mouse_event;
33     void *qemu_put_mouse_event_opaque;
34     int qemu_put_mouse_event_absolute;
35 
36     /* new input core */
37     QemuInputHandler h;
38     QemuInputHandlerState *s;
39     int axis[INPUT_AXIS__MAX];
40     int buttons;
41 };
42 
43 struct QEMUPutKbdEntry {
44     QEMUPutKBDEvent *put_kbd;
45     void *opaque;
46     QemuInputHandlerState *s;
47 };
48 
49 struct QEMUPutLEDEntry {
50     QEMUPutLEDEvent *put_led;
51     void *opaque;
52     QTAILQ_ENTRY(QEMUPutLEDEntry) next;
53 };
54 
55 static QTAILQ_HEAD(, QEMUPutLEDEntry) led_handlers =
56     QTAILQ_HEAD_INITIALIZER(led_handlers);
57 
58 int index_from_key(const char *key, size_t key_length)
59 {
60     int i;
61 
62     for (i = 0; i < Q_KEY_CODE__MAX; i++) {
63         if (!strncmp(key, QKeyCode_str(i), key_length) &&
64             !QKeyCode_str(i)[key_length]) {
65             break;
66         }
67     }
68 
69     /* Return Q_KEY_CODE__MAX if the key is invalid */
70     return i;
71 }
72 
73 static KeyValue *copy_key_value(KeyValue *src)
74 {
75     KeyValue *dst = g_new(KeyValue, 1);
76     memcpy(dst, src, sizeof(*src));
77     if (dst->type == KEY_VALUE_KIND_NUMBER) {
78         QKeyCode code = qemu_input_key_number_to_qcode(dst->u.number.data);
79         dst->type = KEY_VALUE_KIND_QCODE;
80         dst->u.qcode.data = code;
81     }
82     return dst;
83 }
84 
85 void qmp_send_key(KeyValueList *keys, bool has_hold_time, int64_t hold_time,
86                   Error **errp)
87 {
88     KeyValueList *p;
89     KeyValue **up = NULL;
90     int count = 0;
91 
92     if (!has_hold_time) {
93         hold_time = 0; /* use default */
94     }
95 
96     for (p = keys; p != NULL; p = p->next) {
97         qemu_input_event_send_key(NULL, copy_key_value(p->value), true);
98         qemu_input_event_send_key_delay(hold_time);
99         up = g_realloc(up, sizeof(*up) * (count+1));
100         up[count] = copy_key_value(p->value);
101         count++;
102     }
103     while (count) {
104         count--;
105         qemu_input_event_send_key(NULL, up[count], false);
106         qemu_input_event_send_key_delay(hold_time);
107     }
108     g_free(up);
109 }
110 
111 static void legacy_kbd_event(DeviceState *dev, QemuConsole *src,
112                              InputEvent *evt)
113 {
114     QEMUPutKbdEntry *entry = (QEMUPutKbdEntry *)dev;
115     int scancodes[3], i, count;
116     InputKeyEvent *key = evt->u.key.data;
117 
118     if (!entry || !entry->put_kbd) {
119         return;
120     }
121     count = qemu_input_key_value_to_scancode(key->key,
122                                              key->down,
123                                              scancodes);
124     for (i = 0; i < count; i++) {
125         entry->put_kbd(entry->opaque, scancodes[i]);
126     }
127 }
128 
129 static QemuInputHandler legacy_kbd_handler = {
130     .name  = "legacy-kbd",
131     .mask  = INPUT_EVENT_MASK_KEY,
132     .event = legacy_kbd_event,
133 };
134 
135 QEMUPutKbdEntry *qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
136 {
137     QEMUPutKbdEntry *entry;
138 
139     entry = g_new0(QEMUPutKbdEntry, 1);
140     entry->put_kbd = func;
141     entry->opaque = opaque;
142     entry->s = qemu_input_handler_register((DeviceState *)entry,
143                                            &legacy_kbd_handler);
144     qemu_input_handler_activate(entry->s);
145     return entry;
146 }
147 
148 static void legacy_mouse_event(DeviceState *dev, QemuConsole *src,
149                                InputEvent *evt)
150 {
151     static const int bmap[INPUT_BUTTON__MAX] = {
152         [INPUT_BUTTON_LEFT]   = MOUSE_EVENT_LBUTTON,
153         [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
154         [INPUT_BUTTON_RIGHT]  = MOUSE_EVENT_RBUTTON,
155     };
156     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
157     InputBtnEvent *btn;
158     InputMoveEvent *move;
159 
160     switch (evt->type) {
161     case INPUT_EVENT_KIND_BTN:
162         btn = evt->u.btn.data;
163         if (btn->down) {
164             s->buttons |= bmap[btn->button];
165         } else {
166             s->buttons &= ~bmap[btn->button];
167         }
168         if (btn->down && btn->button == INPUT_BUTTON_WHEEL_UP) {
169             s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
170                                     s->axis[INPUT_AXIS_X],
171                                     s->axis[INPUT_AXIS_Y],
172                                     -1,
173                                     s->buttons);
174         }
175         if (btn->down && btn->button == INPUT_BUTTON_WHEEL_DOWN) {
176             s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
177                                     s->axis[INPUT_AXIS_X],
178                                     s->axis[INPUT_AXIS_Y],
179                                     1,
180                                     s->buttons);
181         }
182         break;
183     case INPUT_EVENT_KIND_ABS:
184         move = evt->u.abs.data;
185         s->axis[move->axis] = move->value;
186         break;
187     case INPUT_EVENT_KIND_REL:
188         move = evt->u.rel.data;
189         s->axis[move->axis] += move->value;
190         break;
191     default:
192         break;
193     }
194 }
195 
196 static void legacy_mouse_sync(DeviceState *dev)
197 {
198     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
199 
200     s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
201                             s->axis[INPUT_AXIS_X],
202                             s->axis[INPUT_AXIS_Y],
203                             0,
204                             s->buttons);
205 
206     if (!s->qemu_put_mouse_event_absolute) {
207         s->axis[INPUT_AXIS_X] = 0;
208         s->axis[INPUT_AXIS_Y] = 0;
209     }
210 }
211 
212 QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
213                                                 void *opaque, int absolute,
214                                                 const char *name)
215 {
216     QEMUPutMouseEntry *s;
217 
218     s = g_new0(QEMUPutMouseEntry, 1);
219 
220     s->qemu_put_mouse_event = func;
221     s->qemu_put_mouse_event_opaque = opaque;
222     s->qemu_put_mouse_event_absolute = absolute;
223 
224     s->h.name = name;
225     s->h.mask = INPUT_EVENT_MASK_BTN |
226         (absolute ? INPUT_EVENT_MASK_ABS : INPUT_EVENT_MASK_REL);
227     s->h.event = legacy_mouse_event;
228     s->h.sync = legacy_mouse_sync;
229     s->s = qemu_input_handler_register((DeviceState *)s,
230                                        &s->h);
231 
232     return s;
233 }
234 
235 void qemu_activate_mouse_event_handler(QEMUPutMouseEntry *entry)
236 {
237     qemu_input_handler_activate(entry->s);
238 }
239 
240 void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry)
241 {
242     qemu_input_handler_unregister(entry->s);
243 
244     g_free(entry);
245 }
246 
247 QEMUPutLEDEntry *qemu_add_led_event_handler(QEMUPutLEDEvent *func,
248                                             void *opaque)
249 {
250     QEMUPutLEDEntry *s;
251 
252     s = g_new0(QEMUPutLEDEntry, 1);
253 
254     s->put_led = func;
255     s->opaque = opaque;
256     QTAILQ_INSERT_TAIL(&led_handlers, s, next);
257     return s;
258 }
259 
260 void qemu_remove_led_event_handler(QEMUPutLEDEntry *entry)
261 {
262     if (entry == NULL)
263         return;
264     QTAILQ_REMOVE(&led_handlers, entry, next);
265     g_free(entry);
266 }
267 
268 void kbd_put_ledstate(int ledstate)
269 {
270     QEMUPutLEDEntry *cursor;
271 
272     QTAILQ_FOREACH(cursor, &led_handlers, next) {
273         cursor->put_led(cursor->opaque, ledstate);
274     }
275 }
276