libfbx-box.c

libfxb是linux下只写操作framebuffer的一个轻量级的库。

/*
 *  libfbx-box.c -- GUI box routines for libfbx
 *  (C)opyright 2001 U4X Labs
 *
 *  Written by:	Michael Bourgeous <[e-mail]>
 *
 *  $Id: libfbx-box.c,v 1.5 2001/01/22 07:04:08 nitroglycerine Exp $
 *
 *  	This is the place for all the GUI functions responsible for
 *  drawing boxes.
 *
 *  See ChangeLog for modifications, CREDITS for credits.
 *
 *  All source herein is copyright U4X Labs and its original author. 
 *  Any code modifications or additions are (C)opyright the original 
 *  author and U4X Labs respectively.
 *
 *  libfbx 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 of 
 *  the License, or (at your option) any later version.
 *
 *  libfbx 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 libfbx; if not, write to the Free Software 
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 *  USA
 */
#include <libfbx/libfbx.h>
#include <libfbx/libfbx-gui.h>

/*
 * Function:    fb_box_proc()
 * Arguments:	Message, dialog, argument
 * Returns:	GUI status
 * Description:	Draws a simple box with an outline 
 * 		color and a fill color.  Should never
 * 		be called by user, but instead
 * 		assigned to the behavior function
 * 		pointer in an fb_dialog struct.
 */
int fb_box_proc(int msg, fb_dialog *d, int c)
{
	int fg_r, fg_g, fg_b;
	
	switch(msg)
	{
		case FB_MSG_DRAW:
			/* TODO: handle disabled drawing */
			fg_r = d->fg_r;
			fg_g = d->fg_g;
			fg_b = d->fg_g;

			fb_draw_box(d->x + 1, d->y + 1, d->x + d->width - 2, d->y + d->height - 2, 
				     d->bg_r, d->bg_g, d->bg_b,
				     fb_screen);
			fb_rect(d->x, d->y, d->x + d->width - 1, d->y + d->height - 1,
				fg_r, fg_g, fg_b, 
				fb_screen);
			break;
	}

	return FB_DIALOG_OK;
}

/*
 * Function:    fb_shadow_box_proc()
 * Arguments:	Message, dialog, argument
 * Returns:	GUI status
 * Description:	Draws a simple box, in the style of
 * 		fb_box_proc, with the addition of a
 * 		shadow.  Should never be called by
 * 		the user.
 */
int fb_shadow_box_proc(int msg, fb_dialog *d, int c)
{
	int fg_r = 0, fg_g = 0, fg_b = 0;
	
	switch(msg)
	{
		case FB_MSG_DRAW:
			fb_fill_rect(d->x + 1, d->y + 1, d->x + d->width - 3, d->y + d->height - 3,
				     d->bg_r, d->bg_g, d->bg_b,
				     fb_screen);
		
			fb_rect(d->x, d->y, d->x + d->width - 2, d->y + d->height - 2,
				fg_r, fg_g, fg_b,
				fb_screen);

			fb_line(d->x + d->width - 1, d->y + 1, 
				d->x + d->width - 1, d->y + d->height - 1, 
				0, 0, 0,
				fb_screen);

			fb_line(d->x + 1, d->y + d->height - 1,
				d->x + d->width - 1, d->y + d->height - 1,
				0, 0, 0,
				fb_screen);
			break;
	}
	
	return FB_DIALOG_OK;
}