xref: /qemu/ui/sdl2-input.c (revision 6b3913e0) 
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_reset_keys(struct sdl2_console *scon)
36 {
37     QemuConsole *con = scon ? scon->dcl.con : NULL;
38     int i;
39 
40     for (i = 0 ;
41          i < SDL_NUM_SCANCODES && i < qemu_input_map_usb_to_qcode_len ;
42          i++) {
43         if (modifiers_state[i]) {
44             int qcode = qemu_input_map_usb_to_qcode[i];
45             qemu_input_event_send_key_qcode(con, qcode, false);
46             modifiers_state[i] = 0;
47         }
48     }
49 }
50 
51 void sdl2_process_key(struct sdl2_console *scon,
52                       SDL_KeyboardEvent *ev)
53 {
54     int qcode;
55     QemuConsole *con = scon ? scon->dcl.con : NULL;
56 
57     if (ev->keysym.scancode >= qemu_input_map_usb_to_qcode_len) {
58         return;
59     }
60 
61     qcode = qemu_input_map_usb_to_qcode[ev->keysym.scancode];
62 
63     /* modifier state tracking */
64     switch (ev->keysym.scancode) {
65     case SDL_SCANCODE_LCTRL:
66     case SDL_SCANCODE_LSHIFT:
67     case SDL_SCANCODE_LALT:
68     case SDL_SCANCODE_LGUI:
69     case SDL_SCANCODE_RCTRL:
70     case SDL_SCANCODE_RSHIFT:
71     case SDL_SCANCODE_RALT:
72     case SDL_SCANCODE_RGUI:
73         if (ev->type == SDL_KEYUP) {
74             modifiers_state[ev->keysym.scancode] = 0;
75         } else {
76             modifiers_state[ev->keysym.scancode] = 1;
77         }
78         break;
79     default:
80         /* nothing */
81         break;
82     }
83 
84     if (!qemu_console_is_graphic(con)) {
85         bool ctrl = (modifiers_state[SDL_SCANCODE_LCTRL] ||
86                      modifiers_state[SDL_SCANCODE_RCTRL]);
87         if (ev->type == SDL_KEYDOWN) {
88             switch (ev->keysym.scancode) {
89             case SDL_SCANCODE_RETURN:
90                 kbd_put_keysym_console(con, '\n');
91                 break;
92             default:
93                 kbd_put_qcode_console(con, qcode, ctrl);
94                 break;
95             }
96         }
97     } else {
98         qemu_input_event_send_key_qcode(con, qcode,
99                                         ev->type == SDL_KEYDOWN);
100     }
101 }
102