text-input v3 : 入力メソッドからのテキスト入力

$ cc -o test p02_textinput.c client.c imagebuf.c \
 text-input-unstable-v3-protocol.c -lwayland-client -lrt

/******************************
 * text-input-unstable-v3
 ******************************/

#include <stdio.h>
#include <string.h>
#include <linux/input.h>

#include <wayland-client.h>
#include "text-input-unstable-v3-client-protocol.h"

#include "client.h"
#include "imagebuf.h"


//-------------

struct zwp_text_input_manager_v3 *g_input_manager = NULL;
struct zwp_text_input_v3 *g_text_input;

#define INPUTBOX_X 10
#define INPUTBOX_Y 10
#define INPUTBOX_W 200
#define INPUTBOX_H 60

//-------------


//-----------------------
// zwp_text_input_v3
//-----------------------


/* enter */

static void _input_enter(void *data, struct zwp_text_input_v3 *text_input,
    struct wl_surface *surface)
{
    printf("text_input # enter\n");

    zwp_text_input_v3_enable(text_input);

    zwp_text_input_v3_set_cursor_rectangle(text_input,
        INPUTBOX_X, INPUTBOX_Y, INPUTBOX_W, INPUTBOX_H);

    zwp_text_input_v3_commit(text_input);
}

/* leave */

static void _input_leave(void *data, struct zwp_text_input_v3 *text_input,
    struct wl_surface *surface)
{
    printf("text_input # leave\n");

    zwp_text_input_v3_disable(text_input);
    zwp_text_input_v3_commit(text_input);
}

/* preedit_string */

static void _input_preedit_string(void *data, struct zwp_text_input_v3 *text_input,
    const char *text, int32_t cursor_begin, int32_t cursor_end)
{
    printf("text_input # preedit_string | text:\"%s\", cursor_begin:%d, cursor_end:%d\n",
        text, cursor_begin, cursor_end);
}

/* commit_string */

static void _input_commit_string(void *data, struct zwp_text_input_v3 *text_input,
    const char *text)
{
    printf("text_input # commit_string | text:\"%s\"\n", text);
}

/* delete_surrounding_text */

static void _input_delete_surrounding_text(void *data,
    struct zwp_text_input_v3 *text_input,
    uint32_t before_length, uint32_t after_length)
{
    printf("text_input # delete_surrounding_text | before_length:%u, after_length:%u\n",
        before_length, after_length);
}

/* done */

static void _input_done(void *data, struct zwp_text_input_v3 *text_input,
    uint32_t serial)
{
    printf("text_input # done | serial:%u\n", serial);

#if 0
    //周囲のテキストセット
    
    zwp_text_input_v3_set_surrounding_text(text_input,
        "[text]", 1, 5);

    zwp_text_input_v3_set_text_change_cause(text_input,
        ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_INPUT_METHOD);

    zwp_text_input_v3_commit(text_input);
#endif
}


static const struct zwp_text_input_v3_listener g_text_input_listener = {
    _input_enter, _input_leave, _input_preedit_string,
    _input_commit_string, _input_delete_surrounding_text, _input_done
};


//-----------------------
// wl_keyboard
//-----------------------


static void _keyboard_keymap(void *data, struct wl_keyboard *keyboard,
    uint32_t format, int32_t fd, uint32_t size)
{
}

static void _keyboard_enter(void *data, struct wl_keyboard *keyboard,
    uint32_t serial, struct wl_surface *surface, struct wl_array *keys)
{
    printf("wl_keyboard # enter\n");
}

static void _keyboard_leave(void *data, struct wl_keyboard *keyboard,
    uint32_t serial, struct wl_surface *surface)
{
    printf("wl_keyboard # leave\n");
}

/* キー */

static void _keyboard_key(void *data, struct wl_keyboard *keyboard,
    uint32_t serial, uint32_t time, uint32_t key, uint32_t state)
{
    Client *p = (Client *)data;

    printf("wl_keyboard # key | %s, key:%u\n",
        (state == WL_KEYBOARD_KEY_STATE_PRESSED)? "press":"release", key);

    if(state != WL_KEYBOARD_KEY_STATE_PRESSED) return;

    switch(key)
    {
        //ESC キーで終了
        case KEY_ESC:
            p->finish_loop = 1;
            break;
    }
}

static void _keyboard_modifiers(void *data, struct wl_keyboard *keyboard,
    uint32_t serial, uint32_t mods_depressed, uint32_t mods_latched, uint32_t mods_locked, uint32_t group)
{

}

static void _keyboard_repeat_info(void *data, struct wl_keyboard *keyboard,
    int32_t rate, int32_t delay)
{

}

static const struct wl_keyboard_listener g_keyboard_listener = {
    _keyboard_keymap, _keyboard_enter, _keyboard_leave, _keyboard_key,
    _keyboard_modifiers, _keyboard_repeat_info
};


//------------------------


static void _registry_global(
    void *data,struct wl_registry *reg,uint32_t id,const char *name,uint32_t ver)
{
    if(strcmp(name, "zwp_text_input_manager_v3") == 0)
    {
        g_input_manager = wl_registry_bind(reg, id,
            &zwp_text_input_manager_v3_interface, 1);
    }
}


//---------------


int main(void)
{
    Client *p;
    Window *win;

    p = Client_new(0);

    p->init_flags = INIT_FLAGS_SEAT | INIT_FLAGS_KEYBOARD;
    p->keyboard_listener = &g_keyboard_listener;
    p->registry_global = _registry_global;
    
    Client_init(p);

    if(!g_input_manager)
    {
        printf("[!] not found 'zwp_text_input_manager_v3'\n");
        Client_destroy(p);
        return 1;
    }

    //zwp_text_input

    g_text_input = zwp_text_input_manager_v3_get_text_input(
        g_input_manager, p->seat);

    zwp_text_input_v3_add_listener(g_text_input,
        &g_text_input_listener, p);

    //ウィンドウ

    win = Window_create(p, 256, 256, NULL);

    ImageBuf_fill(win->img, 0xffff0000);

    ImageBuf_box(win->img,
        INPUTBOX_X, INPUTBOX_Y, INPUTBOX_W, INPUTBOX_H,
        0xff000000);
    
    Window_update(win);

    //

    Client_loop_simple(p);

    //解放

    Window_destroy(win);

    zwp_text_input_v3_destroy(g_text_input);
    zwp_text_input_manager_v3_destroy(g_input_manager);

    Client_destroy(p);

    return 0;
}

## zwp_text_input_manager_v3 破棄

void zwp_text_input_manager_v3_destroy(
    struct zwp_text_input_manager_v3 *zwp_text_input_manager_v3);

## zwp_text_input_v3 作成

struct zwp_text_input_v3 *zwp_text_input_manager_v3_get_text_input(
    struct zwp_text_input_manager_v3 *zwp_text_input_manager_v3,
    struct wl_seat *seat);

## ハンドラ設定

int zwp_text_input_v3_add_listener(
    struct zwp_text_input_v3 *zwp_text_input_v3,
    const struct zwp_text_input_v3_listener *listener, void *data);

## zwp_text_input_v3 破棄

void zwp_text_input_v3_destroy(
    struct zwp_text_input_v3 *zwp_text_input_v3);

void (*enter)(void *data, struct zwp_text_input_v3 *zwp_text_input_v3,
    struct wl_surface *surface);

void (*leave)(void *data, struct zwp_text_input_v3 *zwp_text_input_v3,
    struct wl_surface *surface);

void (*preedit_string)(void *data, struct zwp_text_input_v3 *zwp_text_input_v3,
    const char *text, int32_t cursor_begin, int32_t cursor_end);

void (*commit_string)(void *data, struct zwp_text_input_v3 *zwp_text_input_v3,
    const char *text);

void (*delete_surrounding_text)(void *data,
    struct zwp_text_input_v3 *zwp_text_input_v3,
    uint32_t before_length, uint32_t after_length);

void (*done)(void *data, struct zwp_text_input_v3 *zwp_text_input_v3,
    uint32_t serial);