GToolkit
/* $Id$ */
/* Copyright (c) 2020 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Graphics GToolkit */
/* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#include <stdarg.h>
#include <stdlib.h>
#include "common.h"
/* GWidget */
/* private */
/* types */
typedef void (*GWidgetHandlerSelf)(void * self);
struct _GWidget
{
GWidget * gwidget;
/* GWidget */
void * self;
/* handlers */
GWidgetHandlerSelf handler_hide;
GWidgetHandlerSelf handler_show;
};
/* public */
/* functions */
/* gwidget_new */
GWidget * gwidget_new(void)
{
GWidget * gwidget;
if((gwidget = malloc(sizeof(*gwidget))) == NULL)
return NULL;
gwidget->gwidget = gwidget;
gwidget->self = NULL;
gwidget->handler_hide = NULL;
gwidget->handler_show = NULL;
return gwidget;
}
/* gwidget_delete */
void gwidget_delete(GWidget * gwidget)
{
free(gwidget);
}
/* accessors */
/* gwidget_set_handler */
void gwidget_set_handler(GWidget * gwidget, GWidgetHandler handler, ...)
{
va_list ap;
va_start(ap, handler);
switch(handler)
{
case GWIDGET_HANDLER_HIDE:
gwidget->handler_hide = va_arg(ap, GWidgetHandlerSelf);
break;
case GWIDGET_HANDLER_SHOW:
gwidget->handler_show = va_arg(ap, GWidgetHandlerSelf);
break;
}
va_end(ap);
}
/* gwidget_set_self */
void gwidget_set_self(GWidget * gwidget, void * self)
{
gwidget->self = self;
}
/* useful */
/* gwidget_hide */
void gwidget_hide(GWidget * gwidget)
{
if(gwidget->gwidget != gwidget)
gwidget = gwidget->gwidget;
if(gwidget->handler_hide != NULL)
gwidget->handler_hide(gwidget->self);
}
/* gwidget_show */
void gwidget_show(GWidget * gwidget)
{
if(gwidget->gwidget != gwidget)
gwidget = gwidget->gwidget;
if(gwidget->handler_show != NULL)
gwidget->handler_show(gwidget->self);
}