1cc9e08d2f
Add an extra cursor_position, which also allows to change the anchor (for slections). Change the index type to int to allow setting it before the beginning of a commited string. The cursor should not be moved as a direct repsonse to this event but atomically on the next commit_string event. Signed-off-by: Jan Arne Petersen <jpetersen@openismus.com>
515 lines
13 KiB
C
515 lines
13 KiB
C
/*
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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 <unistd.h>
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#include <sys/mman.h>
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#include <linux/input.h>
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#include "window.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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typedef void (*keyboard_input_key_handler_t)(struct simple_im *keyboard,
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uint32_t serial,
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uint32_t time, uint32_t key, uint32_t unicode,
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enum wl_keyboard_key_state state);
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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 wl_display *display;
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struct wl_registry *registry;
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struct wl_keyboard *keyboard;
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enum compose_state compose_state;
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struct compose_seq compose_seq;
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struct xkb_context *xkb_context;
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uint32_t modifiers;
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struct xkb_keymap *keymap;
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struct xkb_state *state;
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xkb_mod_mask_t control_mask;
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xkb_mod_mask_t alt_mask;
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xkb_mod_mask_t shift_mask;
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keyboard_input_key_handler_t key_handler;
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uint32_t serial;
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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_slash, XKB_KEY_O, 0 }, "Ø" },
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{ { XKB_KEY_slash, XKB_KEY_o, 0 }, "ø" },
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{ { XKB_KEY_less, XKB_KEY_3, 0 }, "♥" },
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{ { XKB_KEY_A, XKB_KEY_A, 0 }, "Å" },
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{ { XKB_KEY_A, XKB_KEY_E, 0 }, "Æ" },
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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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{ { XKB_KEY_a, XKB_KEY_e, 0 }, "æ" },
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{ { XKB_KEY_a, XKB_KEY_a, 0 }, "å" },
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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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uint32_t serial)
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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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keyboard->serial = serial;
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}
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static void
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input_method_context_content_type(void *data,
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struct input_method_context *context,
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uint32_t hint,
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uint32_t purpose)
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{
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}
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static void
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input_method_context_invoke_action(void *data,
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struct input_method_context *context,
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uint32_t button,
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uint32_t index)
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{
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}
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static void
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input_method_context_commit(void *data,
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struct input_method_context *context)
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{
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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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input_method_context_content_type,
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input_method_context_invoke_action,
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input_method_context_commit
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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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char *map_str;
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if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
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close(fd);
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return;
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}
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map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
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if (map_str == MAP_FAILED) {
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close(fd);
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return;
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}
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keyboard->keymap =
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xkb_map_new_from_string(keyboard->xkb_context,
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map_str,
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XKB_KEYMAP_FORMAT_TEXT_V1,
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0);
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munmap(map_str, size);
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close(fd);
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if (!keyboard->keymap) {
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fprintf(stderr, "failed to compile keymap\n");
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return;
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}
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keyboard->state = xkb_state_new(keyboard->keymap);
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if (!keyboard->state) {
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fprintf(stderr, "failed to create XKB state\n");
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xkb_map_unref(keyboard->keymap);
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return;
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}
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keyboard->control_mask =
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1 << xkb_map_mod_get_index(keyboard->keymap, "Control");
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keyboard->alt_mask =
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1 << xkb_map_mod_get_index(keyboard->keymap, "Mod1");
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keyboard->shift_mask =
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1 << xkb_map_mod_get_index(keyboard->keymap, "Shift");
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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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uint32_t code;
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uint32_t num_syms;
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const xkb_keysym_t *syms;
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xkb_keysym_t sym;
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enum wl_keyboard_key_state state = state_w;
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if (!keyboard->state)
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return;
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code = key + 8;
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num_syms = xkb_key_get_syms(keyboard->state, code, &syms);
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sym = XKB_KEY_NoSymbol;
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if (num_syms == 1)
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sym = syms[0];
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if (keyboard->key_handler)
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(*keyboard->key_handler)(keyboard, serial, time, key, sym,
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state);
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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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xkb_mod_mask_t mask;
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xkb_state_update_mask(keyboard->state, mods_depressed,
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mods_latched, mods_locked, 0, 0, group);
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mask = xkb_state_serialize_mods(keyboard->state,
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XKB_STATE_DEPRESSED |
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XKB_STATE_LATCHED);
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keyboard->modifiers = 0;
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if (mask & keyboard->control_mask)
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keyboard->modifiers |= MOD_CONTROL_MASK;
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if (mask & keyboard->alt_mask)
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keyboard->modifiers |= MOD_ALT_MASK;
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if (mask & keyboard->shift_mask)
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keyboard->modifiers |= MOD_SHIFT_MASK;
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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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uint32_t serial)
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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->serial = serial;
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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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registry_handle_global(void *data, struct wl_registry *registry,
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uint32_t name, const char *interface, uint32_t version)
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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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wl_registry_bind(registry, name,
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&input_method_interface, 1);
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input_method_add_listener(keyboard->input_method,
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&input_method_listener, keyboard);
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}
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}
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static void
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registry_handle_global_remove(void *data, struct wl_registry *registry,
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uint32_t name)
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{
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}
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static const struct wl_registry_listener registry_listener = {
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registry_handle_global,
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registry_handle_global_remove
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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 simple_im *keyboard,
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uint32_t serial, uint32_t time, uint32_t key, uint32_t sym,
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enum wl_keyboard_key_state state)
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{
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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, serial, 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_cursor(keyboard->context,
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keyboard->serial,
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0);
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input_method_context_preedit_string(keyboard->context,
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keyboard->serial,
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"", "");
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input_method_context_cursor_position(keyboard->context,
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keyboard->serial,
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0, 0);
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input_method_context_commit_string(keyboard->context,
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keyboard->serial,
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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_cursor(keyboard->context,
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keyboard->serial,
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strlen(text));
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input_method_context_preedit_string(keyboard->context,
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keyboard->serial,
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text,
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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_cursor(keyboard->context,
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keyboard->serial,
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0);
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input_method_context_preedit_string(keyboard->context,
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keyboard->serial,
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"", "");
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input_method_context_cursor_position(keyboard->context,
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keyboard->serial,
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0, 0);
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input_method_context_commit_string(keyboard->context,
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keyboard->serial,
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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, serial, 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_cursor_position(keyboard->context,
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keyboard->serial,
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0, 0);
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input_method_context_commit_string(keyboard->context,
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keyboard->serial,
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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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int ret = 0;
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memset(&simple_im, 0, sizeof(simple_im));
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simple_im.display = wl_display_connect(NULL);
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if (simple_im.display == NULL) {
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fprintf(stderr, "failed to connect to server: %m\n");
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return -1;
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}
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simple_im.registry = wl_display_get_registry(simple_im.display);
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wl_registry_add_listener(simple_im.registry,
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®istry_listener, &simple_im);
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wl_display_roundtrip(simple_im.display);
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if (simple_im.input_method == NULL) {
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fprintf(stderr, "No input_method global\n");
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exit(1);
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}
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simple_im.xkb_context = xkb_context_new(0);
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if (simple_im.xkb_context == NULL) {
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fprintf(stderr, "Failed to create XKB context\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.key_handler = simple_im_key_handler;
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while (ret != -1)
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ret = wl_display_dispatch(simple_im.display);
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if (ret == -1) {
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fprintf(stderr, "Dispatch error: %m\n");
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exit(1);
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}
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return 0;
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}
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