xref: /openbmc/qemu/ui/input-legacy.c (revision 0b2ff2ce) 
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 
61 int index_from_key(const char *key)
62 {
63     int i;
64 
65     for (i = 0; QKeyCode_lookup[i] != NULL; i++) {
66         if (!strcmp(key, QKeyCode_lookup[i])) {
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->key->key,
118                                              evt->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->kind) {
155     case INPUT_EVENT_KIND_BTN:
156         if (evt->btn->down) {
157             s->buttons |= bmap[evt->btn->button];
158         } else {
159             s->buttons &= ~bmap[evt->btn->button];
160         }
161         if (evt->btn->down && evt->btn->button == INPUT_BUTTON_WHEEL_UP) {
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->btn->down && evt->btn->button == INPUT_BUTTON_WHEEL_DOWN) {
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         break;
176     case INPUT_EVENT_KIND_ABS:
177         s->axis[evt->abs->axis] = evt->abs->value;
178         break;
179     case INPUT_EVENT_KIND_REL:
180         s->axis[evt->rel->axis] += evt->rel->value;
181         break;
182     default:
183         break;
184     }
185 }
186 
187 static void legacy_mouse_sync(DeviceState *dev)
188 {
189     QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
190 
191     s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
192                             s->axis[INPUT_AXIS_X],
193                             s->axis[INPUT_AXIS_Y],
194                             0,
195                             s->buttons);
196 
197     if (!s->qemu_put_mouse_event_absolute) {
198         s->axis[INPUT_AXIS_X] = 0;
199         s->axis[INPUT_AXIS_Y] = 0;
200     }
201 }
202 
203 QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
204                                                 void *opaque, int absolute,
205                                                 const char *name)
206 {
207     QEMUPutMouseEntry *s;
208 
209     s = g_malloc0(sizeof(QEMUPutMouseEntry));
210 
211     s->qemu_put_mouse_event = func;
212     s->qemu_put_mouse_event_opaque = opaque;
213     s->qemu_put_mouse_event_absolute = absolute;
214 
215     s->h.name = name;
216     s->h.mask = INPUT_EVENT_MASK_BTN |
217         (absolute ? INPUT_EVENT_MASK_ABS : INPUT_EVENT_MASK_REL);
218     s->h.event = legacy_mouse_event;
219     s->h.sync = legacy_mouse_sync;
220     s->s = qemu_input_handler_register((DeviceState *)s,
221                                        &s->h);
222 
223     return s;
224 }
225 
226 void qemu_activate_mouse_event_handler(QEMUPutMouseEntry *entry)
227 {
228     qemu_input_handler_activate(entry->s);
229 }
230 
231 void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry)
232 {
233     qemu_input_handler_unregister(entry->s);
234 
235     g_free(entry);
236 }
237 
238 QEMUPutLEDEntry *qemu_add_led_event_handler(QEMUPutLEDEvent *func,
239                                             void *opaque)
240 {
241     QEMUPutLEDEntry *s;
242 
243     s = g_malloc0(sizeof(QEMUPutLEDEntry));
244 
245     s->put_led = func;
246     s->opaque = opaque;
247     QTAILQ_INSERT_TAIL(&led_handlers, s, next);
248     return s;
249 }
250 
251 void qemu_remove_led_event_handler(QEMUPutLEDEntry *entry)
252 {
253     if (entry == NULL)
254         return;
255     QTAILQ_REMOVE(&led_handlers, entry, next);
256     g_free(entry);
257 }
258 
259 void kbd_put_ledstate(int ledstate)
260 {
261     QEMUPutLEDEntry *cursor;
262 
263     QTAILQ_FOREACH(cursor, &led_handlers, next) {
264         cursor->put_led(cursor->opaque, ledstate);
265     }
266 }
267