xref: /openbmc/qemu/ui/spice-input.c (revision 4a09d0bb)
1 /*
2  * Copyright (C) 2010 Red Hat, Inc.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 or
7  * (at your option) version 3 of the License.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #include "qemu/osdep.h"
19 
20 #include <spice.h>
21 #include <spice/enums.h>
22 
23 #include "qemu-common.h"
24 #include "ui/qemu-spice.h"
25 #include "ui/console.h"
26 #include "ui/keymaps.h"
27 #include "ui/input.h"
28 
29 /* keyboard bits */
30 
31 typedef struct QemuSpiceKbd {
32     SpiceKbdInstance sin;
33     int ledstate;
34     bool emul0;
35 } QemuSpiceKbd;
36 
37 static void kbd_push_key(SpiceKbdInstance *sin, uint8_t frag);
38 static uint8_t kbd_get_leds(SpiceKbdInstance *sin);
39 static void kbd_leds(void *opaque, int l);
40 
41 static const SpiceKbdInterface kbd_interface = {
42     .base.type          = SPICE_INTERFACE_KEYBOARD,
43     .base.description   = "qemu keyboard",
44     .base.major_version = SPICE_INTERFACE_KEYBOARD_MAJOR,
45     .base.minor_version = SPICE_INTERFACE_KEYBOARD_MINOR,
46     .push_scan_freg     = kbd_push_key,
47     .get_leds           = kbd_get_leds,
48 };
49 
50 static void kbd_push_key(SpiceKbdInstance *sin, uint8_t scancode)
51 {
52     QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
53     int keycode;
54     bool up;
55 
56     if (scancode == SCANCODE_EMUL0) {
57         kbd->emul0 = true;
58         return;
59     }
60     keycode = scancode & ~SCANCODE_UP;
61     up = scancode & SCANCODE_UP;
62     if (kbd->emul0) {
63         kbd->emul0 = false;
64         keycode |= SCANCODE_GREY;
65     }
66 
67     qemu_input_event_send_key_number(NULL, keycode, !up);
68 }
69 
70 static uint8_t kbd_get_leds(SpiceKbdInstance *sin)
71 {
72     QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
73     return kbd->ledstate;
74 }
75 
76 static void kbd_leds(void *opaque, int ledstate)
77 {
78     QemuSpiceKbd *kbd = opaque;
79 
80     kbd->ledstate = 0;
81     if (ledstate & QEMU_SCROLL_LOCK_LED) {
82         kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_SCROLL_LOCK;
83     }
84     if (ledstate & QEMU_NUM_LOCK_LED) {
85         kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_NUM_LOCK;
86     }
87     if (ledstate & QEMU_CAPS_LOCK_LED) {
88         kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_CAPS_LOCK;
89     }
90     spice_server_kbd_leds(&kbd->sin, ledstate);
91 }
92 
93 /* mouse bits */
94 
95 typedef struct QemuSpicePointer {
96     SpiceMouseInstance  mouse;
97     SpiceTabletInstance tablet;
98     int width, height;
99     uint32_t last_bmask;
100     Notifier mouse_mode;
101     bool absolute;
102 } QemuSpicePointer;
103 
104 static void spice_update_buttons(QemuSpicePointer *pointer,
105                                  int wheel, uint32_t button_mask)
106 {
107     static uint32_t bmap[INPUT_BUTTON__MAX] = {
108         [INPUT_BUTTON_LEFT]        = 0x01,
109         [INPUT_BUTTON_MIDDLE]      = 0x04,
110         [INPUT_BUTTON_RIGHT]       = 0x02,
111         [INPUT_BUTTON_WHEEL_UP]    = 0x10,
112         [INPUT_BUTTON_WHEEL_DOWN]  = 0x20,
113     };
114 
115     if (wheel < 0) {
116         button_mask |= 0x10;
117     }
118     if (wheel > 0) {
119         button_mask |= 0x20;
120     }
121 
122     if (pointer->last_bmask == button_mask) {
123         return;
124     }
125     qemu_input_update_buttons(NULL, bmap, pointer->last_bmask, button_mask);
126     pointer->last_bmask = button_mask;
127 }
128 
129 static void mouse_motion(SpiceMouseInstance *sin, int dx, int dy, int dz,
130                          uint32_t buttons_state)
131 {
132     QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, mouse);
133     spice_update_buttons(pointer, dz, buttons_state);
134     qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
135     qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
136     qemu_input_event_sync();
137 }
138 
139 static void mouse_buttons(SpiceMouseInstance *sin, uint32_t buttons_state)
140 {
141     QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, mouse);
142     spice_update_buttons(pointer, 0, buttons_state);
143     qemu_input_event_sync();
144 }
145 
146 static const SpiceMouseInterface mouse_interface = {
147     .base.type          = SPICE_INTERFACE_MOUSE,
148     .base.description   = "mouse",
149     .base.major_version = SPICE_INTERFACE_MOUSE_MAJOR,
150     .base.minor_version = SPICE_INTERFACE_MOUSE_MINOR,
151     .motion             = mouse_motion,
152     .buttons            = mouse_buttons,
153 };
154 
155 static void tablet_set_logical_size(SpiceTabletInstance* sin, int width, int height)
156 {
157     QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
158 
159     if (height < 16) {
160         height = 16;
161     }
162     if (width < 16) {
163         width = 16;
164     }
165     pointer->width  = width;
166     pointer->height = height;
167 }
168 
169 static void tablet_position(SpiceTabletInstance* sin, int x, int y,
170                             uint32_t buttons_state)
171 {
172     QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
173 
174     spice_update_buttons(pointer, 0, buttons_state);
175     qemu_input_queue_abs(NULL, INPUT_AXIS_X, x, pointer->width);
176     qemu_input_queue_abs(NULL, INPUT_AXIS_Y, y, pointer->height);
177     qemu_input_event_sync();
178 }
179 
180 
181 static void tablet_wheel(SpiceTabletInstance* sin, int wheel,
182                          uint32_t buttons_state)
183 {
184     QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
185 
186     spice_update_buttons(pointer, wheel, buttons_state);
187     qemu_input_event_sync();
188 }
189 
190 static void tablet_buttons(SpiceTabletInstance *sin,
191                            uint32_t buttons_state)
192 {
193     QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
194 
195     spice_update_buttons(pointer, 0, buttons_state);
196     qemu_input_event_sync();
197 }
198 
199 static const SpiceTabletInterface tablet_interface = {
200     .base.type          = SPICE_INTERFACE_TABLET,
201     .base.description   = "tablet",
202     .base.major_version = SPICE_INTERFACE_TABLET_MAJOR,
203     .base.minor_version = SPICE_INTERFACE_TABLET_MINOR,
204     .set_logical_size   = tablet_set_logical_size,
205     .position           = tablet_position,
206     .wheel              = tablet_wheel,
207     .buttons            = tablet_buttons,
208 };
209 
210 static void mouse_mode_notifier(Notifier *notifier, void *data)
211 {
212     QemuSpicePointer *pointer = container_of(notifier, QemuSpicePointer, mouse_mode);
213     bool is_absolute  = qemu_input_is_absolute();
214 
215     if (pointer->absolute == is_absolute) {
216         return;
217     }
218 
219     if (is_absolute) {
220         qemu_spice_add_interface(&pointer->tablet.base);
221     } else {
222         spice_server_remove_interface(&pointer->tablet.base);
223     }
224     pointer->absolute = is_absolute;
225 }
226 
227 void qemu_spice_input_init(void)
228 {
229     QemuSpiceKbd *kbd;
230     QemuSpicePointer *pointer;
231 
232     kbd = g_malloc0(sizeof(*kbd));
233     kbd->sin.base.sif = &kbd_interface.base;
234     qemu_spice_add_interface(&kbd->sin.base);
235     qemu_add_led_event_handler(kbd_leds, kbd);
236 
237     pointer = g_malloc0(sizeof(*pointer));
238     pointer->mouse.base.sif  = &mouse_interface.base;
239     pointer->tablet.base.sif = &tablet_interface.base;
240     qemu_spice_add_interface(&pointer->mouse.base);
241 
242     pointer->absolute = false;
243     pointer->mouse_mode.notify = mouse_mode_notifier;
244     qemu_add_mouse_mode_change_notifier(&pointer->mouse_mode);
245     mouse_mode_notifier(&pointer->mouse_mode, NULL);
246 }
247