xref: /openbmc/qemu/ui/input-legacy.c (revision 93f7c4f0) 
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/sysemu.h"
26 #include "monitor/monitor.h"
27 #include "ui/console.h"
28 #include "qapi/error.h"
29 #include "qmp-commands.h"
30 #include "qapi-types.h"
31 #include "ui/keymaps.h"
32 #include "ui/input.h"
33 
34 struct QEMUPutMouseEntry {
35     QEMUPutMouseEvent *qemu_put_mouse_event;
36     void *qemu_put_mouse_event_opaque;
37     int qemu_put_mouse_event_absolute;
38 
39     /* new input core */
40     QemuInputHandler h;
41     QemuInputHandlerState *s;
42     int axis[INPUT_AXIS_MAX];
43     int buttons;
44 };
45 
46 struct QEMUPutKbdEntry {
47     QEMUPutKBDEvent *put_kbd;
48     void *opaque;
49     QemuInputHandlerState *s;
50 };
51 
52 struct QEMUPutLEDEntry {
53     QEMUPutLEDEvent *put_led;
54     void *opaque;
55     QTAILQ_ENTRY(QEMUPutLEDEntry) next;
56 };
57 
58 static QTAILQ_HEAD(, QEMUPutLEDEntry) led_handlers =
59     QTAILQ_HEAD_INITIALIZER(led_handlers);
60 static QTAILQ_HEAD(, QEMUPutMouseEntry) mouse_handlers =
61     QTAILQ_HEAD_INITIALIZER(mouse_handlers);
62 
63 int index_from_key(const char *key)
64 {
65     int i;
66 
67     for (i = 0; QKeyCode_lookup[i] != NULL; i++) {
68         if (!strcmp(key, QKeyCode_lookup[i])) {
69             break;
70         }
71     }
72 
73     /* Return Q_KEY_CODE_MAX if the key is invalid */
74     return i;
75 }
76 
77 static KeyValue *copy_key_value(KeyValue *src)
78 {
79     KeyValue *dst = g_new(KeyValue, 1);
80     memcpy(dst, src, sizeof(*src));
81     return dst;
82 }
83 
84 void qmp_send_key(KeyValueList *keys, bool has_hold_time, int64_t hold_time,
85                   Error **errp)
86 {
87     KeyValueList *p;
88     KeyValue **up = NULL;
89     int count = 0;
90 
91     if (!has_hold_time) {
92         hold_time = 0; /* use default */
93     }
94 
95     for (p = keys; p != NULL; p = p->next) {
96         qemu_input_event_send_key(NULL, copy_key_value(p->value), true);
97         qemu_input_event_send_key_delay(hold_time);
98         up = g_realloc(up, sizeof(*up) * (count+1));
99         up[count] = copy_key_value(p->value);
100         count++;
101     }
102     while (count) {
103         count--;
104         qemu_input_event_send_key(NULL, up[count], false);
105         qemu_input_event_send_key_delay(hold_time);
106     }
107     g_free(up);
108 }
109 
110 static void legacy_kbd_event(DeviceState *dev, QemuConsole *src,
111                              InputEvent *evt)
112 {
113     QEMUPutKbdEntry *entry = (QEMUPutKbdEntry *)dev;
114     int scancodes[3], i, count;
115 
116     if (!entry || !entry->put_kbd) {
117         return;
118     }
119     count = qemu_input_key_value_to_scancode(evt->key->key,
120                                              evt->key->down,
121                                              scancodes);
122     for (i = 0; i < count; i++) {
123         entry->put_kbd(entry->opaque, scancodes[i]);
124     }
125 }
126 
127 static QemuInputHandler legacy_kbd_handler = {
128     .name  = "legacy-kbd",
129     .mask  = INPUT_EVENT_MASK_KEY,
130     .event = legacy_kbd_event,
131 };
132 
133 QEMUPutKbdEntry *qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
134 {
135     QEMUPutKbdEntry *entry;
136 
137     entry = g_new0(QEMUPutKbdEntry, 1);
138     entry->put_kbd = func;
139     entry->opaque = opaque;
140     entry->s = qemu_input_handler_register((DeviceState *)entry,
141                                            &legacy_kbd_handler);
142     qemu_input_handler_activate(entry->s);
143     return entry;
144 }
145 
146 static void legacy_mouse_event(DeviceState *dev, QemuConsole *src,
147                                InputEvent *evt)
148 {
149     static const int bmap[INPUT_BUTTON_MAX] = {
150         [INPUT_BUTTON_LEFT]   = MOUSE_EVENT_LBUTTON,
151         [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
152         [INPUT_BUTTON_RIGHT]  = MOUSE_EVENT_RBUTTON,
153     };
154     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
155 
156     switch (evt->kind) {
157     case INPUT_EVENT_KIND_BTN:
158         if (evt->btn->down) {
159             s->buttons |= bmap[evt->btn->button];
160         } else {
161             s->buttons &= ~bmap[evt->btn->button];
162         }
163         if (evt->btn->down && evt->btn->button == INPUT_BUTTON_WHEEL_UP) {
164             s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
165                                     s->axis[INPUT_AXIS_X],
166                                     s->axis[INPUT_AXIS_Y],
167                                     -1,
168                                     s->buttons);
169         }
170         if (evt->btn->down && evt->btn->button == INPUT_BUTTON_WHEEL_DOWN) {
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         break;
178     case INPUT_EVENT_KIND_ABS:
179         s->axis[evt->abs->axis] = evt->abs->value;
180         break;
181     case INPUT_EVENT_KIND_REL:
182         s->axis[evt->rel->axis] += evt->rel->value;
183         break;
184     default:
185         break;
186     }
187 }
188 
189 static void legacy_mouse_sync(DeviceState *dev)
190 {
191     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
192 
193     s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
194                             s->axis[INPUT_AXIS_X],
195                             s->axis[INPUT_AXIS_Y],
196                             0,
197                             s->buttons);
198 
199     if (!s->qemu_put_mouse_event_absolute) {
200         s->axis[INPUT_AXIS_X] = 0;
201         s->axis[INPUT_AXIS_Y] = 0;
202     }
203 }
204 
205 QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
206                                                 void *opaque, int absolute,
207                                                 const char *name)
208 {
209     QEMUPutMouseEntry *s;
210 
211     s = g_malloc0(sizeof(QEMUPutMouseEntry));
212 
213     s->qemu_put_mouse_event = func;
214     s->qemu_put_mouse_event_opaque = opaque;
215     s->qemu_put_mouse_event_absolute = absolute;
216 
217     s->h.name = name;
218     s->h.mask = INPUT_EVENT_MASK_BTN |
219         (absolute ? INPUT_EVENT_MASK_ABS : INPUT_EVENT_MASK_REL);
220     s->h.event = legacy_mouse_event;
221     s->h.sync = legacy_mouse_sync;
222     s->s = qemu_input_handler_register((DeviceState *)s,
223                                        &s->h);
224 
225     return s;
226 }
227 
228 void qemu_activate_mouse_event_handler(QEMUPutMouseEntry *entry)
229 {
230     qemu_input_handler_activate(entry->s);
231 }
232 
233 void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry)
234 {
235     qemu_input_handler_unregister(entry->s);
236 
237     g_free(entry);
238 }
239 
240 QEMUPutLEDEntry *qemu_add_led_event_handler(QEMUPutLEDEvent *func,
241                                             void *opaque)
242 {
243     QEMUPutLEDEntry *s;
244 
245     s = g_malloc0(sizeof(QEMUPutLEDEntry));
246 
247     s->put_led = func;
248     s->opaque = opaque;
249     QTAILQ_INSERT_TAIL(&led_handlers, s, next);
250     return s;
251 }
252 
253 void qemu_remove_led_event_handler(QEMUPutLEDEntry *entry)
254 {
255     if (entry == NULL)
256         return;
257     QTAILQ_REMOVE(&led_handlers, entry, next);
258     g_free(entry);
259 }
260 
261 void kbd_put_ledstate(int ledstate)
262 {
263     QEMUPutLEDEntry *cursor;
264 
265     QTAILQ_FOREACH(cursor, &led_handlers, next) {
266         cursor->put_led(cursor->opaque, ledstate);
267     }
268 }
269