rt-thread/components/rtgui/widgets/title.c

/*
 * File      : title.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rt-thread.org/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2009-10-16     Bernard      first version
 */
#include <rtgui/widgets/title.h>
#include <rtgui/rtgui_system.h>

/* there is no event handler in wintitle but handle the event on topwin of server */
static void _rtgui_wintitle_constructor(rtgui_wintitle_t *wintitle)
{
    wintitle->title = RT_NULL;
    RTGUI_WIDGET(wintitle)->flag = RTGUI_WIDGET_FLAG_DEFAULT;
    RTGUI_WIDGET_TEXTALIGN(wintitle) = RTGUI_ALIGN_CENTER_VERTICAL;
}

static void _rtgui_wintitle_deconstructor(rtgui_wintitle_t *wintitle)
{
    if (wintitle->title != RT_NULL)
        rt_free(wintitle->title);
    wintitle->title = RT_NULL;
}

DEFINE_CLASS_TYPE(wintitle, "wintitle",
                  RTGUI_WIDGET_TYPE,
                  _rtgui_wintitle_constructor,
                  _rtgui_wintitle_deconstructor,
                  sizeof(struct rtgui_wintitle));

rtgui_wintitle_t *rtgui_wintitle_create(struct rtgui_win *window, const char *title)
{
    rtgui_wintitle_t *wintitle;

    wintitle = (rtgui_wintitle_t *)rtgui_widget_create(RTGUI_WINTITLE_TYPE);
    if (wintitle != RT_NULL)
    {
        rtgui_wintitle_set_title(wintitle, title);
        RTGUI_WIDGET(wintitle)->toplevel = window;
    }

    return wintitle;
}

void rtgui_wintitle_destroy(rtgui_wintitle_t *wintitle)
{
    rtgui_widget_destroy(RTGUI_WIDGET(wintitle));
}

void rtgui_wintitle_set_title(rtgui_wintitle_t *wintitle, const char *title)
{
    RT_ASSERT(wintitle != RT_NULL);

    if (wintitle->title != RT_NULL)
    {
        rt_free(wintitle->title);
    }

    if (title != RT_NULL) wintitle->title = (char *)rt_strdup((const char *)title);
    else wintitle->title = RT_NULL;
}

char *rtgui_wintitle_get_title(rtgui_wintitle_t *wintitle)
{
    RT_ASSERT(wintitle != RT_NULL);

    return wintitle->title;
}