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text: Add simple compose input method

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Add an input method listening to hardware keyboard input and generating
compose text.

Signed-off-by: Jan Arne Petersen <jpetersen@openismus.com>
dev
Jan Arne Petersen 12 years ago committed by Kristian Høgsberg
parent 9d1d32bdd0
commit e9fba2b737
3 changed files with 349 additions and 1 deletions
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  1. 1
      clients/.gitignore
  2. 11
      clients/Makefile.am
  3. 338
      clients/weston-simple-im.c

1
clients/.gitignore vendored
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@ -34,3 +34,4 @@ weston-tablet-shell
weston-terminal
workspaces-client-protocol.h
workspaces-protocol.c
weston-simple-im

11
clients/Makefile.am
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@ -13,7 +13,8 @@ libexec_PROGRAMS = \
$(tablet_shell) \
$(screenshooter) \
$(screensaver) \
$(keyboard)
$(keyboard) \
weston-simple-im
AM_CFLAGS = $(GCC_CFLAGS)
AM_CPPFLAGS = \
@ -139,6 +140,14 @@ weston_keyboard_SOURCES = \
input-method-client-protocol.h
weston_keyboard_LDADD = $(toolkit_libs)
weston_simple_im_SOURCES = \
weston-simple-im.c \
desktop-shell-client-protocol.h \
desktop-shell-protocol.c \
input-method-protocol.c \
input-method-client-protocol.h
weston_simple_im_LDADD = $(toolkit_libs)
weston_info_SOURCES = \
weston-info.c \
../shared/os-compatibility.c \

338
clients/weston-simple-im.c
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@ -0,0 +1,338 @@
/*
* Copyright © 2012 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <linux/input.h>
#include "window.h"
#include "keyboard-utils.h"
#include "input-method-client-protocol.h"
enum compose_state {
state_normal,
state_compose
};
struct compose_seq {
uint32_t keys[4];
const char *text;
};
struct simple_im {
struct input_method *input_method;
struct input_method_context *context;
struct display *display;
struct wl_keyboard *keyboard;
struct keyboard_input *keyboard_input;
enum compose_state compose_state;
struct compose_seq compose_seq;
};
static const struct compose_seq compose_seqs[] = {
{ { XKB_KEY_quotedbl, XKB_KEY_A, 0 }, "Ä" },
{ { XKB_KEY_quotedbl, XKB_KEY_O, 0 }, "Ö" },
{ { XKB_KEY_quotedbl, XKB_KEY_U, 0 }, "Ü" },
{ { XKB_KEY_quotedbl, XKB_KEY_a, 0 }, "ä" },
{ { XKB_KEY_quotedbl, XKB_KEY_o, 0 }, "ö" },
{ { XKB_KEY_quotedbl, XKB_KEY_u, 0 }, "ü" },
{ { XKB_KEY_apostrophe, XKB_KEY_A, 0 }, "Á" },
{ { XKB_KEY_apostrophe, XKB_KEY_a, 0 }, "á" },
{ { XKB_KEY_O, XKB_KEY_C, 0 }, "©" },
{ { XKB_KEY_O, XKB_KEY_R, 0 }, "®" },
{ { XKB_KEY_s, XKB_KEY_s, 0 }, "ß" },
};
static const uint32_t ignore_keys_on_compose[] = {
XKB_KEY_Shift_L,
XKB_KEY_Shift_R
};
static void
input_method_context_surrounding_text(void *data,
struct input_method_context *context,
const char *text,
uint32_t cursor,
uint32_t anchor)
{
fprintf(stderr, "Surrounding text updated: %s\n", text);
}
static void
input_method_context_reset(void *data,
struct input_method_context *context)
{
struct simple_im *keyboard = data;
fprintf(stderr, "Reset pre-edit buffer\n");
keyboard->compose_state = state_normal;
}
static const struct input_method_context_listener input_method_context_listener = {
input_method_context_surrounding_text,
input_method_context_reset
};
static void
input_method_keyboard_keymap(void *data,
struct wl_keyboard *wl_keyboard,
uint32_t format,
int32_t fd,
uint32_t size)
{
struct simple_im *keyboard = data;
keyboard_input_handle_keymap(keyboard->keyboard_input, format, fd, size);
}
static void
input_method_keyboard_key(void *data,
struct wl_keyboard *wl_keyboard,
uint32_t serial,
uint32_t time,
uint32_t key,
uint32_t state_w)
{
struct simple_im *keyboard = data;
keyboard_input_handle_key(keyboard->keyboard_input, serial,
time, key, state_w);
}
static void
input_method_keyboard_modifiers(void *data,
struct wl_keyboard *wl_keyboard,
uint32_t serial,
uint32_t mods_depressed,
uint32_t mods_latched,
uint32_t mods_locked,
uint32_t group)
{
struct simple_im *keyboard = data;
struct input_method_context *context = keyboard->context;
keyboard_input_handle_modifiers(keyboard->keyboard_input, serial,
mods_depressed, mods_latched, mods_locked, group);
input_method_context_modifiers(context, serial,
mods_depressed, mods_depressed,
mods_latched, group);
}
static const struct wl_keyboard_listener input_method_keyboard_listener = {
input_method_keyboard_keymap,
NULL, /* enter */
NULL, /* leave */
input_method_keyboard_key,
input_method_keyboard_modifiers
};
static void
input_method_activate(void *data,
struct input_method *input_method,
struct input_method_context *context)
{
struct simple_im *keyboard = data;
if (keyboard->context)
input_method_context_destroy(keyboard->context);
keyboard->compose_state = state_normal;
keyboard->context = context;
input_method_context_add_listener(context,
&input_method_context_listener,
keyboard);
keyboard->keyboard = input_method_context_grab_keyboard(context);
wl_keyboard_add_listener(keyboard->keyboard,
&input_method_keyboard_listener,
keyboard);
}
static void
input_method_deactivate(void *data,
struct input_method *input_method,
struct input_method_context *context)
{
struct simple_im *keyboard = data;
if (!keyboard->context)
return;
input_method_context_destroy(keyboard->context);
keyboard->context = NULL;
}
static const struct input_method_listener input_method_listener = {
input_method_activate,
input_method_deactivate
};
static void
global_handler(struct display *display, uint32_t name,
const char *interface, uint32_t version, void *data)
{
struct simple_im *keyboard = data;
if (!strcmp(interface, "input_method")) {
keyboard->input_method =
display_bind(display, name,
&input_method_interface, 1);
input_method_add_listener(keyboard->input_method, &input_method_listener, keyboard);
}
}
static int
compare_compose_keys(const void *c1, const void *c2)
{
const struct compose_seq *cs1 = c1;
const struct compose_seq *cs2 = c2;
int i;
for (i = 0; cs1->keys[i] != 0 && cs2->keys[i] != 0; i++) {
if (cs1->keys[i] != cs2->keys[i])
return cs1->keys[i] - cs2->keys[i];
}
if (cs1->keys[i] == cs2->keys[i]
|| cs1->keys[i] == 0)
return 0;
return cs1->keys[i] - cs2->keys[i];
}
static void
simple_im_key_handler(struct keyboard_input *keyboard_input,
uint32_t time, uint32_t key, uint32_t sym,
enum wl_keyboard_key_state state, void *data)
{
struct simple_im *keyboard = data;
struct input_method_context *context = keyboard->context;
char text[64];
if (sym == XKB_KEY_Multi_key &&
state == WL_KEYBOARD_KEY_STATE_RELEASED &&
keyboard->compose_state == state_normal) {
keyboard->compose_state = state_compose;
memset(&keyboard->compose_seq, 0, sizeof(struct compose_seq));
return;
}
if (keyboard->compose_state == state_compose) {
uint32_t i = 0;
struct compose_seq *cs;
if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
return;
for (i = 0; i < sizeof(ignore_keys_on_compose) / sizeof(ignore_keys_on_compose[0]); i++) {
if (sym == ignore_keys_on_compose[i]) {
input_method_context_key(context, display_get_serial(keyboard->display), time, key, state);
return;
}
}
for (i = 0; keyboard->compose_seq.keys[i] != 0; i++);
keyboard->compose_seq.keys[i] = sym;
cs = bsearch (&keyboard->compose_seq, compose_seqs,
sizeof(compose_seqs) / sizeof(compose_seqs[0]),
sizeof(compose_seqs[0]), compare_compose_keys);
if (cs) {
if (cs->keys[i + 1] == 0) {
input_method_context_preedit_string(keyboard->context,
"", 0);
input_method_context_commit_string(keyboard->context,
cs->text,
strlen(cs->text));
keyboard->compose_state = state_normal;
} else {
uint32_t j = 0, idx = 0;
for (; j <= i; j++) {
idx += xkb_keysym_to_utf8(cs->keys[j], text + idx, sizeof(text) - idx);
}
input_method_context_preedit_string(keyboard->context,
text,
strlen(text));
}
} else {
uint32_t j = 0, idx = 0;
for (; j <= i; j++) {
idx += xkb_keysym_to_utf8(keyboard->compose_seq.keys[j], text + idx, sizeof(text) - idx);
}
input_method_context_preedit_string(keyboard->context,
"", 0);
input_method_context_commit_string(keyboard->context,
text,
strlen(text));
keyboard->compose_state = state_normal;
}
return;
}
if (xkb_keysym_to_utf8(sym, text, sizeof(text)) <= 0) {
input_method_context_key(context, display_get_serial(keyboard->display), time, key, state);
return;
}
if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
return;
input_method_context_commit_string(keyboard->context,
text,
strlen(text));
}
int
main(int argc, char *argv[])
{
struct simple_im simple_im;
memset(&simple_im, 0, sizeof(simple_im));
simple_im.display = display_create(argc, argv);
if (simple_im.display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
simple_im.context = NULL;
simple_im.keyboard_input = keyboard_input_create(display_get_xkb_context(simple_im.display));
keyboard_input_set_user_data(simple_im.keyboard_input, &simple_im);
keyboard_input_set_key_handler(simple_im.keyboard_input, simple_im_key_handler);
display_set_user_data(simple_im.display, &simple_im);
display_set_global_handler(simple_im.display, global_handler);
display_run(simple_im.display);
return 0;
}
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