xref: /qemu/ui/sdl2-input.c (revision 85b03694e1843141eaf851fb15300ae12cc76468)
1 /*
2  * QEMU SDL display driver
3  *
4  * Copyright (c) 2003 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 /* Ported SDL 1.2 code to 2.0 by Dave Airlie. */
25 
26 #include "qemu/osdep.h"
27 #include "qemu-common.h"
28 #include "ui/console.h"
29 #include "ui/input.h"
30 #include "ui/sdl2.h"
31 #include "sysemu/sysemu.h"
32 
33 static uint8_t modifiers_state[SDL_NUM_SCANCODES];
34 
35 void sdl2_process_key(struct sdl2_console *scon,
36                       SDL_KeyboardEvent *ev)
37 {
38     int qcode;
39     QemuConsole *con = scon ? scon->dcl.con : NULL;
40 
41     if (ev->keysym.scancode >= qemu_input_map_usb_to_qcode_len) {
42         return;
43     }
44 
45     qcode = qemu_input_map_usb_to_qcode[ev->keysym.scancode];
46 
47     /* modifier state tracking */
48     switch (ev->keysym.scancode) {
49     case SDL_SCANCODE_LCTRL:
50     case SDL_SCANCODE_LSHIFT:
51     case SDL_SCANCODE_LALT:
52     case SDL_SCANCODE_LGUI:
53     case SDL_SCANCODE_RCTRL:
54     case SDL_SCANCODE_RSHIFT:
55     case SDL_SCANCODE_RALT:
56     case SDL_SCANCODE_RGUI:
57         if (ev->type == SDL_KEYUP) {
58             modifiers_state[ev->keysym.scancode] = 0;
59         } else {
60             modifiers_state[ev->keysym.scancode] = 1;
61         }
62         break;
63     default:
64         /* nothing */
65         break;
66     }
67 
68     if (!qemu_console_is_graphic(con)) {
69         bool ctrl = (modifiers_state[SDL_SCANCODE_LCTRL] ||
70                      modifiers_state[SDL_SCANCODE_RCTRL]);
71         if (ev->type == SDL_KEYDOWN) {
72             switch (ev->keysym.scancode) {
73             case SDL_SCANCODE_RETURN:
74                 kbd_put_keysym_console(con, '\n');
75                 break;
76             default:
77                 kbd_put_qcode_console(con, qcode, ctrl);
78                 break;
79             }
80         }
81     } else {
82         qemu_input_event_send_key_qcode(con, qcode,
83                                         ev->type == SDL_KEYDOWN);
84     }
85 }
86