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keymaps: Use multiple key maps, each within the limit of what Xorg can accept.

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Key maps are switched on key press whenever needed.
This commit is contained in:
Dorota Czaplejewicz
2020-09-28 17:29:59 +00:00
parent c686cf7e81
commit e6c136918c
13 changed files with 358 additions and 149 deletions
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59
eek/eek-keyboard.c
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@ -31,30 +31,19 @@
#include "eek-keyboard.h"
void level_keyboard_free(LevelKeyboard *self) {
xkb_keymap_unref(self->keymap);
close(self->keymap_fd);
squeek_layout_free(self->layout);
g_free(self);
/// External linkage for Rust.
/// Don't call multiple times on the same copy, just in Drop.
void eek_key_map_deinit(struct KeyMap *self) {
close(self->fd);
}
LevelKeyboard*
level_keyboard_new (struct squeek_layout *layout)
{
LevelKeyboard *keyboard = g_new0(LevelKeyboard, 1);
if (!keyboard) {
g_error("Failed to create a keyboard");
}
keyboard->layout = layout;
/// External linkage for Rust.
struct KeyMap eek_key_map_from_str(char *keymap_str) {
struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
if (!context) {
g_error("No context created");
}
const gchar *keymap_str = squeek_layout_get_keymap(keyboard->layout);
struct xkb_keymap *keymap = xkb_keymap_new_from_string(context, keymap_str,
XKB_KEYMAP_FORMAT_TEXT_V1, XKB_KEYMAP_COMPILE_NO_FLAGS);
@ -62,10 +51,8 @@ level_keyboard_new (struct squeek_layout *layout)
g_error("Bad keymap:\n%s", keymap_str);
xkb_context_unref(context);
keyboard->keymap = keymap;
keymap_str = xkb_keymap_get_as_string(keymap, XKB_KEYMAP_FORMAT_TEXT_V1);
keyboard->keymap_len = strlen(keymap_str) + 1;
size_t keymap_len = strlen(keymap_str) + 1;
g_autofree char *path = strdup("/eek_keymap-XXXXXX");
char *r = &path[strlen(path) - 6];
@ -79,17 +66,39 @@ level_keyboard_new (struct squeek_layout *layout)
if (keymap_fd < 0) {
g_error("Failed to set up keymap fd");
}
keyboard->keymap_fd = keymap_fd;
shm_unlink(path);
if (ftruncate(keymap_fd, (off_t)keyboard->keymap_len)) {
if (ftruncate(keymap_fd, (off_t)keymap_len)) {
g_error("Failed to increase keymap fd size");
}
char *ptr = mmap(NULL, keyboard->keymap_len, PROT_WRITE, MAP_SHARED,
char *ptr = mmap(NULL, keymap_len, PROT_WRITE, MAP_SHARED,
keymap_fd, 0);
if ((void*)ptr == (void*)-1) {
g_error("Failed to set up mmap");
}
strncpy(ptr, keymap_str, keyboard->keymap_len);
munmap(ptr, keyboard->keymap_len);
strncpy(ptr, keymap_str, keymap_len);
munmap(ptr, keymap_len);
free(keymap_str);
xkb_keymap_unref(keymap);
struct KeyMap km = {
.fd = keymap_fd,
.fd_len = keymap_len,
};
return km;
}
void level_keyboard_free(LevelKeyboard *self) {
squeek_layout_free(self->layout);
g_free(self);
}
LevelKeyboard*
level_keyboard_new (struct squeek_layout *layout)
{
LevelKeyboard *keyboard = g_new0(LevelKeyboard, 1);
if (!keyboard) {
g_error("Failed to create a keyboard");
}
keyboard->layout = layout;
return keyboard;
}