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/*
* Copyright © 2004 Keith Packard
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
* The Original Code is the cairo graphics library.
*
* The Initial Developer of the Original Code is Keith Packard
*
* Contributor(s):
* Keith Packard <keithp@keithp.com>
*/
autoimport Cairo;
typedef foreign cairo_t;
void draw (cairo_t cr)
{
file f = open_event (cr);
bool down = false;
real x, y;
real ox, oy;
void transform_inplace (&real x, &real y)
{
point_t a = device_to_user (cr, (point_t) { x = x, y = y });
x = a.x;
y = a.y;
}
while (!File::end (f))
{
string line = File::fgets (f);
file l = File::string_read (line);
File::fscanf (l, "%d %s", &(int time), &(string name));
switch (name) {
case "press":
File::fscanf (l, "%d %d %d", &(int button), &ox, &oy);
transform_inplace (&ox, &oy);
switch (button) {
case 1:
down = true;
break;
case 2:
save (cr);
set_source_rgb (cr, 1, 0, 0);
move_to (cr, ox - 10, oy - 10);
line_to (cr, ox + 10, oy + 10);
move_to (cr, ox - 10, oy + 10);
line_to (cr, ox + 10, oy - 10);
stroke (cr);
restore (cr);
break;
case 3:
save (cr);
identity_matrix (cr);
set_source_rgb (cr, 1, 1, 1);
move_to (cr, 0, 0);
line_to (cr, width(cr), 0);
line_to (cr, width(cr), height(cr));
line_to (cr, 0, height (cr));
fill (cr);
restore (cr);
break;
}
break;
case "motion":
File::fscanf (l, "%d %d", &x, &y);
transform_inplace (&x, &y);
if (down) {
move_to (cr, ox, oy);
line_to (cr, x, y);
stroke (cr);
}
ox = x;
oy = y;
break;
case "release":
File::fscanf (l, "%d %d %d", &(int button), &ox, &oy);
transform_inplace (&ox, &oy);
if (button == 1)
down = false;
break;
case "delete":
exit (0);
break;
default:
printf ("unknown event %s\n", name);
break;
}
}
}
void main ()
{
cairo_t cr = new ();
draw (cr);
}
if (dim(argv) > 0) main();
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