examples/input-method-keyboard-grab: new example

This commit is contained in:
xdavidwu 2020-07-08 10:48:29 +02:00 committed by Simon Ser
parent 595f324f8b
commit 842df2bd6c
2 changed files with 224 additions and 0 deletions

View file

@ -0,0 +1,217 @@
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
#include <wayland-client.h>
#include <xkbcommon/xkbcommon.h>
#include "input-method-unstable-v2-client-protocol.h"
static struct wl_display *display = NULL;
static struct wl_seat *seat = NULL;
static struct zwp_input_method_manager_v2 *input_method_manager = NULL;
static struct zwp_input_method_v2 *input_method = NULL;
static struct zwp_input_method_keyboard_grab_v2 *kb_grab = NULL;
static bool active = false;
static bool pending_active = false;
static struct xkb_context *xkb_context = NULL;
static struct xkb_keymap *keymap = NULL;
static struct xkb_state *xkb_state = NULL;
static void handle_key(void *data,
struct zwp_input_method_keyboard_grab_v2 *im_keyboard_grab,
uint32_t serial, uint32_t time, uint32_t key, uint32_t state) {
printf("handle_key %u %u %u %u\n", serial, time, key, state);
xkb_keysym_t keysym = xkb_state_key_get_one_sym(xkb_state, key + 8);
char keysym_name[64];
xkb_keysym_get_name(keysym, keysym_name, sizeof(keysym_name));
printf("xkb translated to %s\n", keysym_name);
if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
if (keysym == XKB_KEY_KP_Enter || keysym == XKB_KEY_Return) {
printf("Stopping grab\n");
zwp_input_method_keyboard_grab_v2_release(kb_grab);
kb_grab = NULL;
}
}
}
static void handle_modifiers(void *data,
struct zwp_input_method_keyboard_grab_v2 *im_keyboard_grab,
uint32_t serial, uint32_t mods_depressed, uint32_t mods_latched,
uint32_t mods_locked, uint32_t group) {
printf("handle_modifiers %u %u %u %u %u\n", serial, mods_depressed,
mods_latched, mods_locked, group);
xkb_state_update_mask(xkb_state, mods_depressed, mods_latched,
mods_locked, 0, 0, group);
}
static void handle_keymap(void *data,
struct zwp_input_method_keyboard_grab_v2 *im_keyboard_grab,
uint32_t format, int32_t fd, uint32_t size) {
printf("handle_keymap\n");
char *keymap_string = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
xkb_keymap_unref(keymap);
keymap = xkb_keymap_new_from_string(xkb_context, keymap_string,
XKB_KEYMAP_FORMAT_TEXT_V1, XKB_KEYMAP_COMPILE_NO_FLAGS);
munmap(keymap_string, size);
close(fd);
xkb_state_unref(xkb_state);
xkb_state = xkb_state_new(keymap);
}
static void handle_repeat_info(void *data,
struct zwp_input_method_keyboard_grab_v2 *im_keyboard_grab,
int32_t rate, int32_t delay) {
printf("handle_repeat_info %d %d", rate, delay);
}
static const struct zwp_input_method_keyboard_grab_v2_listener grab_listener = {
.key = handle_key,
.modifiers = handle_modifiers,
.keymap = handle_keymap,
.repeat_info = handle_repeat_info,
};
static void handle_activate(void *data,
struct zwp_input_method_v2 *zwp_input_method_v2) {
pending_active = true;
}
static void handle_deactivate(void *data,
struct zwp_input_method_v2 *zwp_input_method_v2) {
pending_active = false;
}
static void handle_unavailable(void *data,
struct zwp_input_method_v2 *zwp_input_method_v2) {
printf("IM unavailable\n");
zwp_input_method_v2_destroy(zwp_input_method_v2);
input_method = NULL;
}
static void im_activate(void *data,
struct zwp_input_method_v2 *id) {
kb_grab = zwp_input_method_v2_grab_keyboard(input_method);
if (kb_grab == NULL) {
fprintf(stderr, "Failed to grab\n");
exit(EXIT_FAILURE);
}
zwp_input_method_keyboard_grab_v2_add_listener(kb_grab, &grab_listener,
NULL);
printf("Started grab, press enter to stop grab\n");
}
static void im_deactivate(void *data,
struct zwp_input_method_v2 *context) {
if (kb_grab != NULL) {
zwp_input_method_keyboard_grab_v2_release(kb_grab);
kb_grab = NULL;
}
}
static void handle_done(void *data,
struct zwp_input_method_v2 *zwp_input_method_v2) {
bool prev_active = active;
if (active != pending_active) {
printf("Now %s\n", pending_active ? "active" : "inactive");
}
active = pending_active;
if (active && !prev_active) {
im_activate(data, zwp_input_method_v2);
} else if (!active && prev_active) {
im_deactivate(data, zwp_input_method_v2);
}
}
static void handle_surrounding_text(void *data,
struct zwp_input_method_v2 *zwp_input_method_v2,
const char *text, uint32_t cursor, uint32_t anchor) {
// not for this test
}
static void handle_text_change_cause(void *data,
struct zwp_input_method_v2 *zwp_input_method_v2,
uint32_t cause) {
// not for this test
}
static void handle_content_type(void *data,
struct zwp_input_method_v2 *zwp_input_method_v2,
uint32_t hint, uint32_t purpose) {
// not for this test
}
static const struct zwp_input_method_v2_listener im_listener = {
.activate = handle_activate,
.deactivate = handle_deactivate,
.surrounding_text = handle_surrounding_text,
.text_change_cause = handle_text_change_cause,
.content_type = handle_content_type,
.done = handle_done,
.unavailable = handle_unavailable,
};
static void handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version) {
if (strcmp(interface, zwp_input_method_manager_v2_interface.name) == 0) {
input_method_manager = wl_registry_bind(registry, name,
&zwp_input_method_manager_v2_interface, 1);
} else if (strcmp(interface, wl_seat_interface.name) == 0) {
seat = wl_registry_bind(registry, name, &wl_seat_interface, version);
}
}
static void handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name) {
// who cares
}
static const struct wl_registry_listener registry_listener = {
.global = handle_global,
.global_remove = handle_global_remove,
};
int main(int argc, char **argv) {
xkb_context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
if (xkb_context == NULL) {
fprintf(stderr, "Failed to create xkb context\n");
return EXIT_FAILURE;
}
display = wl_display_connect(NULL);
if (display == NULL) {
fprintf(stderr, "Failed to create display\n");
return EXIT_FAILURE;
}
struct wl_registry *registry = wl_display_get_registry(display);
wl_registry_add_listener(registry, &registry_listener, NULL);
wl_display_dispatch(display);
wl_display_roundtrip(display);
if (input_method_manager == NULL) {
fprintf(stderr, "input-method not available\n");
return EXIT_FAILURE;
}
if (seat == NULL) {
fprintf(stderr, "seat not available\n");
return EXIT_FAILURE;
}
input_method = zwp_input_method_manager_v2_get_input_method(
input_method_manager, seat);
zwp_input_method_v2_add_listener(input_method, &im_listener, NULL);
wl_display_roundtrip(display);
while (wl_display_dispatch(display) != -1) {
// This space is intentionally left blank
};
return EXIT_SUCCESS;
}

View file

@ -170,6 +170,13 @@ clients = {
'dep': wlroots,
'proto': ['wlr-virtual-pointer-unstable-v1'],
},
'input-method-keyboard-grab': {
'src': 'input-method-keyboard-grab.c',
'dep': xkbcommon,
'proto': [
'input-method-unstable-v2',
],
},
}
foreach name, info : compositors