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
13 years ago
committed by
Kristian Høgsberg
parent
9d1d32bdd0
commit
e9fba2b737
@ -0,0 +1,338 @@ |
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/*
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* Copyright © 2012 Intel Corporation |
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* |
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* Permission to use, copy, modify, distribute, and sell this software and |
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* its documentation for any purpose is hereby granted without fee, provided |
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* that the above copyright notice appear in all copies and that both that |
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* copyright notice and this permission notice appear in supporting |
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* documentation, and that the name of the copyright holders not be used in |
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* advertising or publicity pertaining to distribution of the software |
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* without specific, written prior permission. The copyright holders make |
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* no representations about the suitability of this software for any |
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* purpose. It is provided "as is" without express or implied warranty. |
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* |
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS |
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF |
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <linux/input.h> |
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#include "window.h" |
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#include "keyboard-utils.h" |
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#include "input-method-client-protocol.h" |
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enum compose_state { |
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state_normal, |
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state_compose |
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}; |
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struct compose_seq { |
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uint32_t keys[4]; |
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const char *text; |
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}; |
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struct simple_im { |
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struct input_method *input_method; |
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struct input_method_context *context; |
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struct display *display; |
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struct wl_keyboard *keyboard; |
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struct keyboard_input *keyboard_input; |
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enum compose_state compose_state; |
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struct compose_seq compose_seq; |
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}; |
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static const struct compose_seq compose_seqs[] = { |
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{ { XKB_KEY_quotedbl, XKB_KEY_A, 0 }, "Ä" }, |
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{ { XKB_KEY_quotedbl, XKB_KEY_O, 0 }, "Ö" }, |
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{ { XKB_KEY_quotedbl, XKB_KEY_U, 0 }, "Ü" }, |
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{ { XKB_KEY_quotedbl, XKB_KEY_a, 0 }, "ä" }, |
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{ { XKB_KEY_quotedbl, XKB_KEY_o, 0 }, "ö" }, |
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{ { XKB_KEY_quotedbl, XKB_KEY_u, 0 }, "ü" }, |
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{ { XKB_KEY_apostrophe, XKB_KEY_A, 0 }, "Á" }, |
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{ { XKB_KEY_apostrophe, XKB_KEY_a, 0 }, "á" }, |
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{ { XKB_KEY_O, XKB_KEY_C, 0 }, "©" }, |
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{ { XKB_KEY_O, XKB_KEY_R, 0 }, "®" }, |
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{ { XKB_KEY_s, XKB_KEY_s, 0 }, "ß" }, |
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}; |
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static const uint32_t ignore_keys_on_compose[] = { |
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XKB_KEY_Shift_L, |
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XKB_KEY_Shift_R |
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}; |
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static void |
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input_method_context_surrounding_text(void *data, |
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struct input_method_context *context, |
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const char *text, |
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uint32_t cursor, |
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uint32_t anchor) |
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{ |
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fprintf(stderr, "Surrounding text updated: %s\n", text); |
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} |
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static void |
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input_method_context_reset(void *data, |
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struct input_method_context *context) |
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{ |
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struct simple_im *keyboard = data; |
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fprintf(stderr, "Reset pre-edit buffer\n"); |
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keyboard->compose_state = state_normal; |
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} |
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static const struct input_method_context_listener input_method_context_listener = { |
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input_method_context_surrounding_text, |
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input_method_context_reset |
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}; |
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static void |
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input_method_keyboard_keymap(void *data, |
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struct wl_keyboard *wl_keyboard, |
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uint32_t format, |
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int32_t fd, |
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uint32_t size) |
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{ |
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struct simple_im *keyboard = data; |
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keyboard_input_handle_keymap(keyboard->keyboard_input, format, fd, size); |
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} |
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static void |
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input_method_keyboard_key(void *data, |
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struct wl_keyboard *wl_keyboard, |
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uint32_t serial, |
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uint32_t time, |
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uint32_t key, |
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uint32_t state_w) |
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{ |
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struct simple_im *keyboard = data; |
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keyboard_input_handle_key(keyboard->keyboard_input, serial, |
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time, key, state_w); |
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} |
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static void |
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input_method_keyboard_modifiers(void *data, |
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struct wl_keyboard *wl_keyboard, |
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uint32_t serial, |
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uint32_t mods_depressed, |
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uint32_t mods_latched, |
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uint32_t mods_locked, |
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uint32_t group) |
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{ |
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struct simple_im *keyboard = data; |
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struct input_method_context *context = keyboard->context; |
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keyboard_input_handle_modifiers(keyboard->keyboard_input, serial, |
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mods_depressed, mods_latched, mods_locked, group); |
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input_method_context_modifiers(context, serial, |
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mods_depressed, mods_depressed, |
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mods_latched, group); |
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} |
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static const struct wl_keyboard_listener input_method_keyboard_listener = { |
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input_method_keyboard_keymap, |
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NULL, /* enter */ |
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NULL, /* leave */ |
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input_method_keyboard_key, |
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input_method_keyboard_modifiers |
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}; |
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static void |
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input_method_activate(void *data, |
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struct input_method *input_method, |
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struct input_method_context *context) |
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{ |
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struct simple_im *keyboard = data; |
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if (keyboard->context) |
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input_method_context_destroy(keyboard->context); |
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keyboard->compose_state = state_normal; |
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keyboard->context = context; |
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input_method_context_add_listener(context, |
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&input_method_context_listener, |
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keyboard); |
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keyboard->keyboard = input_method_context_grab_keyboard(context); |
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wl_keyboard_add_listener(keyboard->keyboard, |
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&input_method_keyboard_listener, |
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keyboard); |
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} |
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static void |
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input_method_deactivate(void *data, |
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struct input_method *input_method, |
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struct input_method_context *context) |
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{ |
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struct simple_im *keyboard = data; |
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if (!keyboard->context) |
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return; |
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input_method_context_destroy(keyboard->context); |
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keyboard->context = NULL; |
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} |
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static const struct input_method_listener input_method_listener = { |
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input_method_activate, |
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input_method_deactivate |
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}; |
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static void |
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global_handler(struct display *display, uint32_t name, |
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const char *interface, uint32_t version, void *data) |
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{ |
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struct simple_im *keyboard = data; |
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if (!strcmp(interface, "input_method")) { |
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keyboard->input_method = |
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display_bind(display, name, |
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&input_method_interface, 1); |
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input_method_add_listener(keyboard->input_method, &input_method_listener, keyboard); |
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} |
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} |
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static int |
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compare_compose_keys(const void *c1, const void *c2) |
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{ |
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const struct compose_seq *cs1 = c1; |
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const struct compose_seq *cs2 = c2; |
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int i; |
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for (i = 0; cs1->keys[i] != 0 && cs2->keys[i] != 0; i++) { |
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if (cs1->keys[i] != cs2->keys[i]) |
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return cs1->keys[i] - cs2->keys[i]; |
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} |
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if (cs1->keys[i] == cs2->keys[i] |
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|| cs1->keys[i] == 0) |
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return 0; |
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return cs1->keys[i] - cs2->keys[i]; |
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} |
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static void |
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simple_im_key_handler(struct keyboard_input *keyboard_input, |
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uint32_t time, uint32_t key, uint32_t sym, |
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enum wl_keyboard_key_state state, void *data) |
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{ |
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struct simple_im *keyboard = data; |
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struct input_method_context *context = keyboard->context; |
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char text[64]; |
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if (sym == XKB_KEY_Multi_key && |
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state == WL_KEYBOARD_KEY_STATE_RELEASED && |
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keyboard->compose_state == state_normal) { |
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keyboard->compose_state = state_compose; |
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memset(&keyboard->compose_seq, 0, sizeof(struct compose_seq)); |
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return; |
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} |
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if (keyboard->compose_state == state_compose) { |
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uint32_t i = 0; |
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struct compose_seq *cs; |
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if (state == WL_KEYBOARD_KEY_STATE_PRESSED) |
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return; |
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for (i = 0; i < sizeof(ignore_keys_on_compose) / sizeof(ignore_keys_on_compose[0]); i++) { |
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if (sym == ignore_keys_on_compose[i]) { |
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input_method_context_key(context, display_get_serial(keyboard->display), time, key, state); |
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return; |
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} |
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} |
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for (i = 0; keyboard->compose_seq.keys[i] != 0; i++); |
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keyboard->compose_seq.keys[i] = sym; |
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cs = bsearch (&keyboard->compose_seq, compose_seqs, |
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sizeof(compose_seqs) / sizeof(compose_seqs[0]), |
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sizeof(compose_seqs[0]), compare_compose_keys); |
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if (cs) { |
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if (cs->keys[i + 1] == 0) { |
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input_method_context_preedit_string(keyboard->context, |
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"", 0); |
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input_method_context_commit_string(keyboard->context, |
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cs->text, |
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strlen(cs->text)); |
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keyboard->compose_state = state_normal; |
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} else { |
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uint32_t j = 0, idx = 0; |
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for (; j <= i; j++) { |
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idx += xkb_keysym_to_utf8(cs->keys[j], text + idx, sizeof(text) - idx); |
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} |
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input_method_context_preedit_string(keyboard->context, |
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text, |
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strlen(text)); |
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} |
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} else { |
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uint32_t j = 0, idx = 0; |
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for (; j <= i; j++) { |
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idx += xkb_keysym_to_utf8(keyboard->compose_seq.keys[j], text + idx, sizeof(text) - idx); |
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} |
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input_method_context_preedit_string(keyboard->context, |
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"", 0); |
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input_method_context_commit_string(keyboard->context, |
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text, |
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strlen(text)); |
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keyboard->compose_state = state_normal; |
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} |
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return; |
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} |
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if (xkb_keysym_to_utf8(sym, text, sizeof(text)) <= 0) { |
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input_method_context_key(context, display_get_serial(keyboard->display), time, key, state); |
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return; |
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} |
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if (state == WL_KEYBOARD_KEY_STATE_PRESSED) |
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return; |
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input_method_context_commit_string(keyboard->context, |
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text, |
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strlen(text)); |
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} |
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int |
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main(int argc, char *argv[]) |
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{ |
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struct simple_im simple_im; |
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memset(&simple_im, 0, sizeof(simple_im)); |
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simple_im.display = display_create(argc, argv); |
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if (simple_im.display == NULL) { |
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fprintf(stderr, "failed to create display: %m\n"); |
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return -1; |
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} |
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simple_im.context = NULL; |
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simple_im.keyboard_input = keyboard_input_create(display_get_xkb_context(simple_im.display)); |
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keyboard_input_set_user_data(simple_im.keyboard_input, &simple_im); |
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keyboard_input_set_key_handler(simple_im.keyboard_input, simple_im_key_handler); |
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display_set_user_data(simple_im.display, &simple_im); |
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display_set_global_handler(simple_im.display, global_handler); |
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display_run(simple_im.display); |
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return 0; |
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} |
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