xref: /openbmc/qemu/ui/input-legacy.c (revision 47451466) 
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 "sysemu/sysemu.h"
28 #include "ui/console.h"
29 #include "keymaps.h"
30 #include "ui/input.h"
31 
32 struct QEMUPutMouseEntry {
33     QEMUPutMouseEvent *qemu_put_mouse_event;
34     void *qemu_put_mouse_event_opaque;
35     int qemu_put_mouse_event_absolute;
36 
37     /* new input core */
38     QemuInputHandler h;
39     QemuInputHandlerState *s;
40     int axis[INPUT_AXIS__MAX];
41     int buttons;
42 };
43 
44 struct QEMUPutKbdEntry {
45     QEMUPutKBDEvent *put_kbd;
46     void *opaque;
47     QemuInputHandlerState *s;
48 };
49 
50 struct QEMUPutLEDEntry {
51     QEMUPutLEDEvent *put_led;
52     void *opaque;
53     QTAILQ_ENTRY(QEMUPutLEDEntry) next;
54 };
55 
56 static QTAILQ_HEAD(, QEMUPutLEDEntry) led_handlers =
57     QTAILQ_HEAD_INITIALIZER(led_handlers);
58 
59 int index_from_key(const char *key, size_t key_length)
60 {
61     int i;
62 
63     for (i = 0; i < Q_KEY_CODE__MAX; i++) {
64         if (!strncmp(key, QKeyCode_str(i), key_length) &&
65             !QKeyCode_str(i)[key_length]) {
66             break;
67         }
68     }
69 
70     /* Return Q_KEY_CODE__MAX if the key is invalid */
71     return i;
72 }
73 
74 static KeyValue *copy_key_value(KeyValue *src)
75 {
76     KeyValue *dst = g_new(KeyValue, 1);
77     memcpy(dst, src, sizeof(*src));
78     if (dst->type == KEY_VALUE_KIND_NUMBER) {
79         QKeyCode code = qemu_input_key_number_to_qcode(dst->u.number.data);
80         dst->type = KEY_VALUE_KIND_QCODE;
81         dst->u.qcode.data = code;
82     }
83     return dst;
84 }
85 
86 void qmp_send_key(KeyValueList *keys, bool has_hold_time, int64_t hold_time,
87                   Error **errp)
88 {
89     KeyValueList *p;
90     KeyValue **up = NULL;
91     int count = 0;
92 
93     if (!has_hold_time) {
94         hold_time = 0; /* use default */
95     }
96 
97     for (p = keys; p != NULL; p = p->next) {
98         qemu_input_event_send_key(NULL, copy_key_value(p->value), true);
99         qemu_input_event_send_key_delay(hold_time);
100         up = g_realloc(up, sizeof(*up) * (count+1));
101         up[count] = copy_key_value(p->value);
102         count++;
103     }
104     while (count) {
105         count--;
106         qemu_input_event_send_key(NULL, up[count], false);
107         qemu_input_event_send_key_delay(hold_time);
108     }
109     g_free(up);
110 }
111 
112 static void legacy_kbd_event(DeviceState *dev, QemuConsole *src,
113                              InputEvent *evt)
114 {
115     QEMUPutKbdEntry *entry = (QEMUPutKbdEntry *)dev;
116     int scancodes[3], i, count;
117     InputKeyEvent *key = evt->u.key.data;
118 
119     if (!entry || !entry->put_kbd) {
120         return;
121     }
122     count = qemu_input_key_value_to_scancode(key->key,
123                                              key->down,
124                                              scancodes);
125     for (i = 0; i < count; i++) {
126         entry->put_kbd(entry->opaque, scancodes[i]);
127     }
128 }
129 
130 static QemuInputHandler legacy_kbd_handler = {
131     .name  = "legacy-kbd",
132     .mask  = INPUT_EVENT_MASK_KEY,
133     .event = legacy_kbd_event,
134 };
135 
136 QEMUPutKbdEntry *qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
137 {
138     QEMUPutKbdEntry *entry;
139 
140     entry = g_new0(QEMUPutKbdEntry, 1);
141     entry->put_kbd = func;
142     entry->opaque = opaque;
143     entry->s = qemu_input_handler_register((DeviceState *)entry,
144                                            &legacy_kbd_handler);
145     qemu_input_handler_activate(entry->s);
146     return entry;
147 }
148 
149 static void legacy_mouse_event(DeviceState *dev, QemuConsole *src,
150                                InputEvent *evt)
151 {
152     static const int bmap[INPUT_BUTTON__MAX] = {
153         [INPUT_BUTTON_LEFT]   = MOUSE_EVENT_LBUTTON,
154         [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
155         [INPUT_BUTTON_RIGHT]  = MOUSE_EVENT_RBUTTON,
156     };
157     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
158     InputBtnEvent *btn;
159     InputMoveEvent *move;
160 
161     switch (evt->type) {
162     case INPUT_EVENT_KIND_BTN:
163         btn = evt->u.btn.data;
164         if (btn->down) {
165             s->buttons |= bmap[btn->button];
166         } else {
167             s->buttons &= ~bmap[btn->button];
168         }
169         if (btn->down && btn->button == INPUT_BUTTON_WHEEL_UP) {
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         if (btn->down && btn->button == INPUT_BUTTON_WHEEL_DOWN) {
177             s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
178                                     s->axis[INPUT_AXIS_X],
179                                     s->axis[INPUT_AXIS_Y],
180                                     1,
181                                     s->buttons);
182         }
183         break;
184     case INPUT_EVENT_KIND_ABS:
185         move = evt->u.abs.data;
186         s->axis[move->axis] = move->value;
187         break;
188     case INPUT_EVENT_KIND_REL:
189         move = evt->u.rel.data;
190         s->axis[move->axis] += move->value;
191         break;
192     default:
193         break;
194     }
195 }
196 
197 static void legacy_mouse_sync(DeviceState *dev)
198 {
199     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
200 
201     s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
202                             s->axis[INPUT_AXIS_X],
203                             s->axis[INPUT_AXIS_Y],
204                             0,
205                             s->buttons);
206 
207     if (!s->qemu_put_mouse_event_absolute) {
208         s->axis[INPUT_AXIS_X] = 0;
209         s->axis[INPUT_AXIS_Y] = 0;
210     }
211 }
212 
213 QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
214                                                 void *opaque, int absolute,
215                                                 const char *name)
216 {
217     QEMUPutMouseEntry *s;
218 
219     s = g_new0(QEMUPutMouseEntry, 1);
220 
221     s->qemu_put_mouse_event = func;
222     s->qemu_put_mouse_event_opaque = opaque;
223     s->qemu_put_mouse_event_absolute = absolute;
224 
225     s->h.name = name;
226     s->h.mask = INPUT_EVENT_MASK_BTN |
227         (absolute ? INPUT_EVENT_MASK_ABS : INPUT_EVENT_MASK_REL);
228     s->h.event = legacy_mouse_event;
229     s->h.sync = legacy_mouse_sync;
230     s->s = qemu_input_handler_register((DeviceState *)s,
231                                        &s->h);
232 
233     return s;
234 }
235 
236 void qemu_activate_mouse_event_handler(QEMUPutMouseEntry *entry)
237 {
238     qemu_input_handler_activate(entry->s);
239 }
240 
241 void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry)
242 {
243     qemu_input_handler_unregister(entry->s);
244 
245     g_free(entry);
246 }
247 
248 QEMUPutLEDEntry *qemu_add_led_event_handler(QEMUPutLEDEvent *func,
249                                             void *opaque)
250 {
251     QEMUPutLEDEntry *s;
252 
253     s = g_new0(QEMUPutLEDEntry, 1);
254 
255     s->put_led = func;
256     s->opaque = opaque;
257     QTAILQ_INSERT_TAIL(&led_handlers, s, next);
258     return s;
259 }
260 
261 void qemu_remove_led_event_handler(QEMUPutLEDEntry *entry)
262 {
263     if (entry == NULL)
264         return;
265     QTAILQ_REMOVE(&led_handlers, entry, next);
266     g_free(entry);
267 }
268 
269 void kbd_put_ledstate(int ledstate)
270 {
271     QEMUPutLEDEntry *cursor;
272 
273     QTAILQ_FOREACH(cursor, &led_handlers, next) {
274         cursor->put_led(cursor->opaque, ledstate);
275     }
276 }
277