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

/*
 * File      : groupbox.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006 - 2012, 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
 * 2012-07-29     Bernard      first version
 */
#include <rtgui/dc.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/rtgui_theme.h>
#include <rtgui/widgets/groupbox.h>

static void _rtgui_groupbox_constructor(rtgui_groupbox_t *box)
{
    /* init widget and set event handler */
    rtgui_object_set_event_handler(RTGUI_OBJECT(box), rtgui_groupbox_event_handler);

    /* set field */
    box->box = RT_NULL;
    box->label = RT_NULL;
    box->selected = RT_NULL;

    box->on_selected = RT_NULL;
}

DEFINE_CLASS_TYPE(groupbox, "groupbox",
                  RTGUI_PANEL_TYPE,
                  _rtgui_groupbox_constructor,
                  RT_NULL,
                  sizeof(struct rtgui_groupbox));

rt_bool_t rtgui_groupbox_event_handler(struct rtgui_object *object, struct rtgui_event *event)
{
    struct rtgui_groupbox *box;

    box = RTGUI_GROUPBOX(object);
    switch (event->type)
    {
    case RTGUI_EVENT_PAINT:
    {
        rtgui_panel_event_handler(RTGUI_OBJECT(box), event);

        /* dispatch paint event to child */
        rtgui_container_dispatch_event(RTGUI_CONTAINER(box), event);
    }
    break;
    default:
        return rtgui_container_event_handler(object, event);
    }

    return RT_FALSE;
}

rtgui_groupbox_t *rtgui_groupbox_create(const char *label, struct rtgui_rect *rect,
                                        int style, widget_select_t select_func)
{
    struct rtgui_groupbox *box;

    RT_ASSERT(select_func != RT_NULL);

    box = (struct rtgui_groupbox *) rtgui_widget_create(RTGUI_GROUPBOX_TYPE);
    if (box != RT_NULL)
    {
        rtgui_widget_set_rect(RTGUI_WIDGET(box), rect);

        if (label != RT_NULL)
        {
            box->label = rt_strdup(label);
        }

        /* create layout box */
        box->box = rtgui_box_create(style, RTGUI_WIDGET_DEFAULT_MARGIN + 1);
        rtgui_container_set_box(RTGUI_CONTAINER(box), box->box);

        rtgui_panel_set_border(RTGUI_PANEL(box), RTGUI_BORDER_NONE);

        box->select_func = select_func;
    }

    return box;
}

void rtgui_groupbox_destroy(rtgui_groupbox_t *groupbox)
{
    rtgui_object_destroy(RTGUI_OBJECT(groupbox));
}

void rtgui_groupbox_select_widget(struct rtgui_groupbox *box, struct rtgui_widget *widget)
{
    struct rtgui_event event;

    RT_ASSERT(box != RT_NULL);
    RT_ASSERT(widget != RT_NULL);

    if (box->selected != widget)
    {
        if (box->selected != RT_NULL)
        {
            box->select_func(box->selected, RT_FALSE);
            if (box->on_selected != RT_NULL)
            {
                RTGUI_EVENT_INIT(&event, RTGUI_EVENT_UNSELECTED);
                box->on_selected(RTGUI_OBJECT(widget), &event);
            }
            rtgui_widget_update(widget);
        }
        box->selected = widget;
    }

    box->select_func(box->selected, RT_TRUE);

    if (box->on_selected != RT_NULL)
    {
        RTGUI_EVENT_INIT(&event, RTGUI_EVENT_SELECTED);
        box->on_selected(RTGUI_OBJECT(widget), &event);
    }
}

struct rtgui_widget *rtgui_groupbox_get_selected(struct rtgui_groupbox *box)
{
    RT_ASSERT(box != RT_NULL);

    return box->selected;
}

void rtgui_groupbox_add_widget(struct rtgui_groupbox *box, struct rtgui_widget *widget)
{
    widget->user_data = (rt_uint32_t)box;
    rtgui_container_add_child(RTGUI_CONTAINER(box), widget);
    RTGUI_WIDGET_ALIGN(widget) = RTGUI_ALIGN_CENTER;
    RTGUI_WIDGET_BACKGROUND(widget) = RTGUI_WIDGET_BACKGROUND(box);
}

void rtgui_groupbox_layout(struct rtgui_groupbox *box)
{
    if (RTGUI_PANEL(box)->border_style != RTGUI_BORDER_NONE)
    {
        rtgui_box_layout(box->box);
    }
    else
    {
        struct rtgui_rect extent;

        RT_ASSERT(box != RT_NULL);
        rtgui_widget_get_extent(RTGUI_WIDGET(box), &extent);
        rtgui_rect_inflate(&extent, -RTGUI_WIDGET_DEFAULT_MARGIN);
        rtgui_box_layout_rect(box->box, &extent);
    }
}