mirror of https://gitee.com/openkylin/qemu.git
273 lines
8.0 KiB
C
273 lines
8.0 KiB
C
/*
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* QEMU keysym to keycode conversion using rdesktop keymaps
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*
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* Copyright (c) 2004 Johannes Schindelin
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "keymaps.h"
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#include "trace.h"
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#include "qemu/ctype.h"
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#include "qemu/error-report.h"
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#include "qapi/error.h"
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#include "ui/input.h"
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struct keysym2code {
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uint32_t count;
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uint16_t keycodes[4];
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};
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struct kbd_layout_t {
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GHashTable *hash;
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};
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static int get_keysym(const name2keysym_t *table,
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const char *name)
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{
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const name2keysym_t *p;
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for(p = table; p->name != NULL; p++) {
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if (!strcmp(p->name, name)) {
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return p->keysym;
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}
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}
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if (name[0] == 'U' && strlen(name) == 5) { /* try unicode Uxxxx */
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char *end;
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int ret = (int)strtoul(name + 1, &end, 16);
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if (*end == '\0' && ret > 0) {
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return ret;
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}
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}
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return 0;
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}
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static void add_keysym(char *line, int keysym, int keycode, kbd_layout_t *k)
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{
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struct keysym2code *keysym2code;
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keysym2code = g_hash_table_lookup(k->hash, GINT_TO_POINTER(keysym));
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if (keysym2code) {
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if (keysym2code->count < ARRAY_SIZE(keysym2code->keycodes)) {
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keysym2code->keycodes[keysym2code->count++] = keycode;
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} else {
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warn_report("more than %zd keycodes for keysym %d",
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ARRAY_SIZE(keysym2code->keycodes), keysym);
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}
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return;
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}
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keysym2code = g_new0(struct keysym2code, 1);
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keysym2code->keycodes[0] = keycode;
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keysym2code->count = 1;
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g_hash_table_replace(k->hash, GINT_TO_POINTER(keysym), keysym2code);
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trace_keymap_add(keysym, keycode, line);
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}
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static int parse_keyboard_layout(kbd_layout_t *k,
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const name2keysym_t *table,
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const char *language, Error **errp)
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{
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int ret;
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FILE *f;
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char * filename;
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char line[1024];
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char keyname[64];
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int len;
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filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
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trace_keymap_parse(filename);
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f = filename ? fopen(filename, "r") : NULL;
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g_free(filename);
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if (!f) {
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error_setg(errp, "could not read keymap file: '%s'", language);
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return -1;
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}
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for(;;) {
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if (fgets(line, 1024, f) == NULL) {
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break;
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}
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len = strlen(line);
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if (len > 0 && line[len - 1] == '\n') {
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line[len - 1] = '\0';
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}
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if (line[0] == '#') {
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continue;
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}
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if (!strncmp(line, "map ", 4)) {
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continue;
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}
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if (!strncmp(line, "include ", 8)) {
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error_setg(errp, "keymap include files are not supported any more");
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ret = -1;
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goto out;
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} else {
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int offset = 0;
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while (line[offset] != 0 &&
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line[offset] != ' ' &&
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offset < sizeof(keyname) - 1) {
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keyname[offset] = line[offset];
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offset++;
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}
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keyname[offset] = 0;
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if (strlen(keyname)) {
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int keysym;
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keysym = get_keysym(table, keyname);
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if (keysym == 0) {
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/* warn_report("unknown keysym %s", line);*/
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} else {
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const char *rest = line + offset + 1;
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int keycode = strtol(rest, NULL, 0);
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if (strstr(rest, "shift")) {
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keycode |= SCANCODE_SHIFT;
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}
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if (strstr(rest, "altgr")) {
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keycode |= SCANCODE_ALTGR;
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}
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if (strstr(rest, "ctrl")) {
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keycode |= SCANCODE_CTRL;
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}
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add_keysym(line, keysym, keycode, k);
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if (strstr(rest, "addupper")) {
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char *c;
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for (c = keyname; *c; c++) {
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*c = qemu_toupper(*c);
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}
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keysym = get_keysym(table, keyname);
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if (keysym) {
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add_keysym(line, keysym,
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keycode | SCANCODE_SHIFT, k);
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}
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}
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}
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}
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}
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}
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ret = 0;
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out:
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fclose(f);
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return ret;
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}
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kbd_layout_t *init_keyboard_layout(const name2keysym_t *table,
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const char *language, Error **errp)
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{
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kbd_layout_t *k;
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k = g_new0(kbd_layout_t, 1);
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k->hash = g_hash_table_new(NULL, NULL);
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if (parse_keyboard_layout(k, table, language, errp) < 0) {
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g_hash_table_unref(k->hash);
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g_free(k);
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return NULL;
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}
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return k;
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}
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int keysym2scancode(kbd_layout_t *k, int keysym,
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QKbdState *kbd, bool down)
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{
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static const uint32_t mask =
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SCANCODE_SHIFT | SCANCODE_ALTGR | SCANCODE_CTRL;
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uint32_t mods, i;
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struct keysym2code *keysym2code;
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#ifdef XK_ISO_Left_Tab
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if (keysym == XK_ISO_Left_Tab) {
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keysym = XK_Tab;
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}
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#endif
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keysym2code = g_hash_table_lookup(k->hash, GINT_TO_POINTER(keysym));
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if (!keysym2code) {
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trace_keymap_unmapped(keysym);
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warn_report("no scancode found for keysym %d", keysym);
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return 0;
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}
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if (keysym2code->count == 1) {
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return keysym2code->keycodes[0];
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}
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/* We have multiple keysym -> keycode mappings. */
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if (down) {
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/*
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* On keydown: Check whenever we find one mapping where the
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* modifier state of the mapping matches the current user
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* interface modifier state. If so, prefer that one.
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*/
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mods = 0;
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if (kbd && qkbd_state_modifier_get(kbd, QKBD_MOD_SHIFT)) {
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mods |= SCANCODE_SHIFT;
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}
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if (kbd && qkbd_state_modifier_get(kbd, QKBD_MOD_ALTGR)) {
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mods |= SCANCODE_ALTGR;
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}
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if (kbd && qkbd_state_modifier_get(kbd, QKBD_MOD_CTRL)) {
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mods |= SCANCODE_CTRL;
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}
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for (i = 0; i < keysym2code->count; i++) {
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if ((keysym2code->keycodes[i] & mask) == mods) {
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return keysym2code->keycodes[i];
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}
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}
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} else {
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/*
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* On keyup: Try find a key which is actually down.
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*/
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for (i = 0; i < keysym2code->count; i++) {
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QKeyCode qcode = qemu_input_key_number_to_qcode
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(keysym2code->keycodes[i]);
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if (kbd && qkbd_state_key_get(kbd, qcode)) {
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return keysym2code->keycodes[i];
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}
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}
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}
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return keysym2code->keycodes[0];
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}
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int keycode_is_keypad(kbd_layout_t *k, int keycode)
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{
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if (keycode >= 0x47 && keycode <= 0x53) {
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return true;
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}
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return false;
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}
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int keysym_is_numlock(kbd_layout_t *k, int keysym)
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{
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switch (keysym) {
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case 0xffb0 ... 0xffb9: /* KP_0 .. KP_9 */
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case 0xffac: /* KP_Separator */
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case 0xffae: /* KP_Decimal */
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return true;
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}
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return false;
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}
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