/*
 *
 *  This file is part of the XForms library package.
 *
 * XForms is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1, or
 * (at your option) any later version.
 *
 * XForms is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with XForms; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA.
 *
 */


/**
 * \file lightbut.c
 *.
 *  This file is part of the XForms library package.
 *  Copyright (c) 1996-2002  T.C. Zhao and Mark Overmars
 *  All rights reserved.
 *.
 *
 *
 */

#if defined F_ID || defined DEBUG
char *fl_id_lbut = "$Id: lightbut.c,v 1.10 2008/04/13 10:44:18 jtt Exp $";
#endif

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <sys/types.h>
#include "include/forms.h"
#include "flinternal.h"


typedef FL_BUTTON_STRUCT SPEC;


/***************************************
 * Draws the lightbutton
 ***************************************/

static void
draw_lightbutton( FL_OBJECT * ob )
{
    int c1,
		c2,
		libox;
    FL_Coord xx,
		     yy,
		     ww,
		     hh,
		     absbw = FL_abs( ob->bw ),
		     bw2;
    SPEC *sp = ob->spec;

    c1 = ob->belowmouse ? FL_LIGHTBUTTON_MCOL : FL_LIGHTBUTTON_TOPCOL;
    c2 = sp->val ? ob->col2 : ob->col1;

    fl_drw_box( ob->boxtype, ob->x, ob->y, ob->w, ob->h, c1, ob->bw );

    if ( ob->boxtype == FL_NO_BOX || ob->boxtype == FL_FLAT_BOX )
		absbw = FL_abs( FL_BOUND_WIDTH );

    /* otherwise too close to the edge */

    if ( absbw < 3 )
		absbw = 3;

    /* Calculate and draw the light */

	hh = FL_max( ob->h - 3 * absbw - 1, FL_LIGHTBUTTON_MINSIZE );

    ww = FL_max( hh / 2, FL_LIGHTBUTTON_MINSIZE );
    if ( ww > ob->w / 6 )
		ww = ob->w / 6;

    xx = ob->x + 1.5 * absbw + 1;
    yy = ob->y + ob->h / 2 - hh / 2;

    absbw = FL_abs( ob->bw );

    /* adjustment for non-rectangular boxes */

    if (    ob->boxtype == FL_ROUNDED3D_UPBOX
		 || ob->boxtype == FL_ROUNDED3D_DOWNBOX )
    {
		hh -= 2;
		yy += 1;
		xx += 3 + ob->w * 0.01;
		ww -= 1;
    }
    else if ( ob->boxtype == FL_RSHADOW_BOX )
    {
		hh -= 1;
		xx += 1;
    }

    switch ( ob->boxtype )
    {
		case FL_UP_BOX:
		case FL_ROUNDED3D_UPBOX:
			libox = FL_DOWN_BOX;
			break;

		case FL_DOWN_BOX:
		case FL_ROUNDED3D_DOWNBOX:
			libox = FL_DOWN_BOX;
			break;

		case FL_FRAME_BOX:
		case FL_EMBOSSED_BOX:
		case FL_ROUNDED_BOX:
			libox = ob->boxtype;
			break;

		case FL_RFLAT_BOX:
			libox = FL_ROUNDED_BOX;
			break;

		case FL_RSHADOW_BOX:
			libox = FL_ROUNDED_BOX;
			break;

		default:
			libox = FL_BORDER_BOX;
			break;
    }

    bw2 = absbw > 2 ? absbw - 1 : absbw;
    fl_drw_box( libox, xx, yy, ww, hh, c2, bw2 );

    /* Draw the label */

    if ( ( ob->align & ~ FL_ALIGN_INSIDE ) == FL_ALIGN_CENTER )
		fl_drw_text( FL_ALIGN_LEFT, xx + ww + 1, ob->y, ob->w - ww - 3,
					 ob->h, ob->lcol, ob->lstyle, ob->lsize, ob->label );
    else
		fl_draw_object_label( ob );

    ww = 0.75f * ob->h;
    if ( ww < absbw + 1 )
		ww = absbw + 1;

    if ( ob->type == FL_RETURN_BUTTON )
		fl_drw_text( 0, ob->x + ob->w - ww, ob->y + 0.2 * ob->h,
					 0.6 * ob->h, 0.6 * ob->h,
					 ob->lcol, 0, 0, "@returnarrow" );
}


/***************************************
 * creates an object
 ***************************************/

FL_OBJECT *
fl_create_lightbutton( int          type,
					   FL_Coord     x,
					   FL_Coord     y,
					   FL_Coord     w,
					   FL_Coord     h,
					   const char * label )
{
    FL_OBJECT *ob;

    fl_add_button_class( FL_LIGHTBUTTON, draw_lightbutton, NULL );
    ob = fl_create_generic_button( FL_LIGHTBUTTON, type, x, y, w, h, label );

    ob->boxtype = FL_LIGHTBUTTON_BOXTYPE;
    ob->col1    = FL_LIGHTBUTTON_COL1;
    ob->col2    = FL_LIGHTBUTTON_COL2;
    ob->align   = FL_LIGHTBUTTON_ALIGN;
    ob->lcol    = FL_LIGHTBUTTON_LCOL;

    return ob;
}


/***************************************
 * Adds an object
 ***************************************/

FL_OBJECT *
fl_add_lightbutton( int          type,
					FL_Coord     x,
					FL_Coord     y,
					FL_Coord     w,
					FL_Coord     h,
					const char * label )
{
    FL_OBJECT *ob = fl_create_lightbutton( type, x, y, w, h, label );

    fl_add_object( fl_current_form, ob );
    return ob;
}
