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input: key mapping helpers
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1#include "sysemu/sysemu.h"
2#include "qapi-types.h"
e842c68d 3#include "qmp-commands.h"
c43ce551 4#include "trace.h"
c8b405b6 5#include "ui/input.h"
c43ce551 6#include "ui/console.h"
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7
8struct QemuInputHandlerState {
9 DeviceState *dev;
10 QemuInputHandler *handler;
11 int id;
12 int events;
13 QTAILQ_ENTRY(QemuInputHandlerState) node;
14};
15static QTAILQ_HEAD(, QemuInputHandlerState) handlers =
16 QTAILQ_HEAD_INITIALIZER(handlers);
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17static NotifierList mouse_mode_notifiers =
18 NOTIFIER_LIST_INITIALIZER(mouse_mode_notifiers);
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19
20QemuInputHandlerState *qemu_input_handler_register(DeviceState *dev,
21 QemuInputHandler *handler)
22{
23 QemuInputHandlerState *s = g_new0(QemuInputHandlerState, 1);
24 static int id = 1;
25
26 s->dev = dev;
27 s->handler = handler;
28 s->id = id++;
29 QTAILQ_INSERT_TAIL(&handlers, s, node);
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30
31 qemu_input_check_mode_change();
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32 return s;
33}
34
35void qemu_input_handler_activate(QemuInputHandlerState *s)
36{
37 QTAILQ_REMOVE(&handlers, s, node);
38 QTAILQ_INSERT_HEAD(&handlers, s, node);
4a33f45e 39 qemu_input_check_mode_change();
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40}
41
42void qemu_input_handler_unregister(QemuInputHandlerState *s)
43{
44 QTAILQ_REMOVE(&handlers, s, node);
45 g_free(s);
4a33f45e 46 qemu_input_check_mode_change();
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47}
48
49static QemuInputHandlerState*
50qemu_input_find_handler(uint32_t mask)
51{
52 QemuInputHandlerState *s;
53
54 QTAILQ_FOREACH(s, &handlers, node) {
55 if (mask & s->handler->mask) {
56 return s;
57 }
58 }
59 return NULL;
60}
61
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62static void qemu_input_transform_abs_rotate(InputEvent *evt)
63{
64 switch (graphic_rotate) {
65 case 90:
66 if (evt->abs->axis == INPUT_AXIS_X) {
67 evt->abs->axis = INPUT_AXIS_Y;
68 } else if (evt->abs->axis == INPUT_AXIS_Y) {
69 evt->abs->axis = INPUT_AXIS_X;
70 evt->abs->value = INPUT_EVENT_ABS_SIZE - 1 - evt->abs->value;
71 }
72 break;
73 case 180:
74 evt->abs->value = INPUT_EVENT_ABS_SIZE - 1 - evt->abs->value;
75 break;
76 case 270:
77 if (evt->abs->axis == INPUT_AXIS_X) {
78 evt->abs->axis = INPUT_AXIS_Y;
79 evt->abs->value = INPUT_EVENT_ABS_SIZE - 1 - evt->abs->value;
80 } else if (evt->abs->axis == INPUT_AXIS_Y) {
81 evt->abs->axis = INPUT_AXIS_X;
82 }
83 break;
84 }
85}
86
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87static void qemu_input_event_trace(QemuConsole *src, InputEvent *evt)
88{
89 const char *name;
90 int idx = -1;
91
92 if (src) {
93 idx = qemu_console_get_index(src);
94 }
95 switch (evt->kind) {
96 case INPUT_EVENT_KIND_KEY:
97 switch (evt->key->key->kind) {
98 case KEY_VALUE_KIND_NUMBER:
99 trace_input_event_key_number(idx, evt->key->key->number,
100 evt->key->down);
101 break;
102 case KEY_VALUE_KIND_QCODE:
103 name = QKeyCode_lookup[evt->key->key->qcode];
104 trace_input_event_key_qcode(idx, name, evt->key->down);
105 break;
106 case KEY_VALUE_KIND_MAX:
107 /* keep gcc happy */
108 break;
109 }
110 break;
111 case INPUT_EVENT_KIND_BTN:
112 name = InputButton_lookup[evt->btn->button];
113 trace_input_event_btn(idx, name, evt->btn->down);
114 break;
115 case INPUT_EVENT_KIND_REL:
116 name = InputAxis_lookup[evt->rel->axis];
117 trace_input_event_rel(idx, name, evt->rel->value);
118 break;
119 case INPUT_EVENT_KIND_ABS:
120 name = InputAxis_lookup[evt->abs->axis];
121 trace_input_event_abs(idx, name, evt->abs->value);
122 break;
123 case INPUT_EVENT_KIND_MAX:
124 /* keep gcc happy */
125 break;
126 }
127}
128
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129void qemu_input_event_send(QemuConsole *src, InputEvent *evt)
130{
131 QemuInputHandlerState *s;
132
133 if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
134 return;
135 }
136
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137 qemu_input_event_trace(src, evt);
138
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139 /* pre processing */
140 if (graphic_rotate && (evt->kind == INPUT_EVENT_KIND_ABS)) {
141 qemu_input_transform_abs_rotate(evt);
142 }
143
144 /* send event */
c8b405b6 145 s = qemu_input_find_handler(1 << evt->kind);
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146 if (!s) {
147 return;
148 }
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149 s->handler->event(s->dev, src, evt);
150 s->events++;
151}
152
153void qemu_input_event_sync(void)
154{
155 QemuInputHandlerState *s;
156
157 if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
158 return;
159 }
160
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161 trace_input_event_sync();
162
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163 QTAILQ_FOREACH(s, &handlers, node) {
164 if (!s->events) {
165 continue;
166 }
167 if (s->handler->sync) {
168 s->handler->sync(s->dev);
169 }
170 s->events = 0;
171 }
172}
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173
174InputEvent *qemu_input_event_new_key(KeyValue *key, bool down)
175{
176 InputEvent *evt = g_new0(InputEvent, 1);
177 evt->key = g_new0(InputKeyEvent, 1);
178 evt->kind = INPUT_EVENT_KIND_KEY;
179 evt->key->key = key;
180 evt->key->down = down;
181 return evt;
182}
183
184void qemu_input_event_send_key(QemuConsole *src, KeyValue *key, bool down)
185{
186 InputEvent *evt;
187 evt = qemu_input_event_new_key(key, down);
188 qemu_input_event_send(src, evt);
189 qemu_input_event_sync();
190 qapi_free_InputEvent(evt);
191}
192
193void qemu_input_event_send_key_number(QemuConsole *src, int num, bool down)
194{
195 KeyValue *key = g_new0(KeyValue, 1);
196 key->kind = KEY_VALUE_KIND_NUMBER;
197 key->number = num;
198 qemu_input_event_send_key(src, key, down);
199}
200
201void qemu_input_event_send_key_qcode(QemuConsole *src, QKeyCode q, bool down)
202{
203 KeyValue *key = g_new0(KeyValue, 1);
204 key->kind = KEY_VALUE_KIND_QCODE;
205 key->qcode = q;
206 qemu_input_event_send_key(src, key, down);
207}
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208
209InputEvent *qemu_input_event_new_btn(InputButton btn, bool down)
210{
211 InputEvent *evt = g_new0(InputEvent, 1);
212 evt->btn = g_new0(InputBtnEvent, 1);
213 evt->kind = INPUT_EVENT_KIND_BTN;
214 evt->btn->button = btn;
215 evt->btn->down = down;
216 return evt;
217}
218
219void qemu_input_queue_btn(QemuConsole *src, InputButton btn, bool down)
220{
221 InputEvent *evt;
222 evt = qemu_input_event_new_btn(btn, down);
223 qemu_input_event_send(src, evt);
224 qapi_free_InputEvent(evt);
225}
226
227void qemu_input_update_buttons(QemuConsole *src, uint32_t *button_map,
228 uint32_t button_old, uint32_t button_new)
229{
230 InputButton btn;
231 uint32_t mask;
232
233 for (btn = 0; btn < INPUT_BUTTON_MAX; btn++) {
234 mask = button_map[btn];
235 if ((button_old & mask) == (button_new & mask)) {
236 continue;
237 }
238 qemu_input_queue_btn(src, btn, button_new & mask);
239 }
240}
241
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242bool qemu_input_is_absolute(void)
243{
244 QemuInputHandlerState *s;
245
246 s = qemu_input_find_handler(INPUT_EVENT_MASK_REL | INPUT_EVENT_MASK_ABS);
247 return (s != NULL) && (s->handler->mask & INPUT_EVENT_MASK_ABS);
248}
249
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250int qemu_input_scale_axis(int value, int size_in, int size_out)
251{
252 if (size_in < 2) {
253 return size_out / 2;
254 }
255 return (int64_t)value * (size_out - 1) / (size_in - 1);
256}
257
258InputEvent *qemu_input_event_new_move(InputEventKind kind,
259 InputAxis axis, int value)
260{
261 InputEvent *evt = g_new0(InputEvent, 1);
262 InputMoveEvent *move = g_new0(InputMoveEvent, 1);
263
264 evt->kind = kind;
265 evt->data = move;
266 move->axis = axis;
267 move->value = value;
268 return evt;
269}
270
271void qemu_input_queue_rel(QemuConsole *src, InputAxis axis, int value)
272{
273 InputEvent *evt;
274 evt = qemu_input_event_new_move(INPUT_EVENT_KIND_REL, axis, value);
275 qemu_input_event_send(src, evt);
276 qapi_free_InputEvent(evt);
277}
278
279void qemu_input_queue_abs(QemuConsole *src, InputAxis axis, int value, int size)
280{
281 InputEvent *evt;
282 int scaled = qemu_input_scale_axis(value, size, INPUT_EVENT_ABS_SIZE);
283 evt = qemu_input_event_new_move(INPUT_EVENT_KIND_ABS, axis, scaled);
284 qemu_input_event_send(src, evt);
285 qapi_free_InputEvent(evt);
286}
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287
288void qemu_input_check_mode_change(void)
289{
290 static int current_is_absolute;
291 int is_absolute;
292
293 is_absolute = qemu_input_is_absolute();
294
295 if (is_absolute != current_is_absolute) {
a8dfb1c3 296 trace_input_mouse_mode(is_absolute);
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297 notifier_list_notify(&mouse_mode_notifiers, NULL);
298 }
299
300 current_is_absolute = is_absolute;
301}
302
303void qemu_add_mouse_mode_change_notifier(Notifier *notify)
304{
305 notifier_list_add(&mouse_mode_notifiers, notify);
306}
307
308void qemu_remove_mouse_mode_change_notifier(Notifier *notify)
309{
310 notifier_remove(notify);
311}
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312
313MouseInfoList *qmp_query_mice(Error **errp)
314{
315 MouseInfoList *mice_list = NULL;
316 MouseInfoList *info;
317 QemuInputHandlerState *s;
318 bool current = true;
319
320 QTAILQ_FOREACH(s, &handlers, node) {
321 if (!(s->handler->mask &
322 (INPUT_EVENT_MASK_REL | INPUT_EVENT_MASK_ABS))) {
323 continue;
324 }
325
326 info = g_new0(MouseInfoList, 1);
327 info->value = g_new0(MouseInfo, 1);
328 info->value->index = s->id;
329 info->value->name = g_strdup(s->handler->name);
330 info->value->absolute = s->handler->mask & INPUT_EVENT_MASK_ABS;
331 info->value->current = current;
332
333 current = false;
334 info->next = mice_list;
335 mice_list = info;
336 }
337
338 return mice_list;
339}
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340
341void do_mouse_set(Monitor *mon, const QDict *qdict)
342{
343 QemuInputHandlerState *s;
344 int index = qdict_get_int(qdict, "index");
345 int found = 0;
346
347 QTAILQ_FOREACH(s, &handlers, node) {
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348 if (s->id != index) {
349 continue;
70b52f62 350 }
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351 if (!(s->handler->mask & (INPUT_EVENT_MASK_REL |
352 INPUT_EVENT_MASK_ABS))) {
353 error_report("Input device '%s' is not a mouse", s->handler->name);
354 return;
355 }
356 found = 1;
357 qemu_input_handler_activate(s);
358 break;
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359 }
360
361 if (!found) {
0419f78f 362 error_report("Mouse at index '%d' not found", index);
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363 }
364
365 qemu_input_check_mode_change();
366}