Annotation of loncom/homework/drawimage.pm, revision 1.1
1.1 ! albertel 1: # The LearningOnline Network with CAPA
! 2: # programatic image drawing
! 3: #
! 4: # $Id: randomlabel.pm,v 1.53 2003/11/11 00:25:24 albertel Exp $
! 5: #
! 6: # Copyright Michigan State University Board of Trustees
! 7: #
! 8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
! 9: #
! 10: # LON-CAPA is free software; you can redistribute it and/or modify
! 11: # it under the terms of the GNU General Public License as published by
! 12: # the Free Software Foundation; either version 2 of the License, or
! 13: # (at your option) any later version.
! 14: #
! 15: # LON-CAPA is distributed in the hope that it will be useful,
! 16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
! 17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! 18: # GNU General Public License for more details.
! 19: #
! 20: # You should have received a copy of the GNU General Public License
! 21: # along with LON-CAPA; if not, write to the Free Software
! 22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
! 23: #
! 24: # /home/httpd/html/adm/gpl.txt
! 25: #
! 26: # http://www.lon-capa.org/
! 27: #
! 28:
! 29: package Apache::drawimage;
! 30: use strict;
! 31: use Apache::loncommon;
! 32:
! 33: my %args;
! 34: my $cgi_id;
! 35: BEGIN {
! 36: &Apache::lonxml::register('Apache::drawimage',('drawimage'));
! 37: }
! 38:
! 39: sub start_drawimage {
! 40: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 41: &Apache::lonxml::register('Apache::drawimage',('line','rectangle','arc','fill'));
! 42: if ($target eq 'web' || $target eq 'tex') {
! 43: $cgi_id=&Apache::loncommon::get_cgi_id();
! 44: %args=();
! 45: }
! 46: }
! 47:
! 48: sub end_drawimage {
! 49: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 50: my $result;
! 51: if ($target eq 'web' || $target eq 'tex') {
! 52: if ($target eq 'web') {
! 53: my $width =
! 54: &Apache::lonxml::get_param('width',$parstack,$safeeval);
! 55: my $height =
! 56: &Apache::lonxml::get_param('height',$parstack,$safeeval);
! 57: my $bgcolor =
! 58: &Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);
! 59: if (!$width) { $width=300; }
! 60: if (!$height) { $height=300; }
! 61: $result.="<img width='$width' height='$height'
! 62: src='/adm/randomlabel.png?token=$cgi_id' />\n";
! 63: $args{"cgi.$cgi_id.SIZE"}=join(':',($width,$height));
! 64: $args{"cgi.$cgi_id.BGCOLOR"}=join(':',($bgcolor));
! 65: &Apache::lonnet::appenv(%args);
! 66: } elsif ($target eq 'tex') {
! 67: #FIXME generate image some how
! 68: #probably Simple::PostScript
! 69: }
! 70: }
! 71: &Apache::lonxml::deregister('Apache::drawimage',('line','rectangle'));
! 72: return $result;
! 73: }
! 74:
! 75: sub start_line {
! 76: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 77: my $result;
! 78: if ($target eq 'web' || $target eq 'tex') {
! 79: my $x1 = &Apache::lonxml::get_param('x1',$parstack,$safeeval);
! 80: my $y1 = &Apache::lonxml::get_param('y1',$parstack,$safeeval);
! 81: my $x2 = &Apache::lonxml::get_param('x2',$parstack,$safeeval);
! 82: my $y2 = &Apache::lonxml::get_param('y2',$parstack,$safeeval);
! 83: my $color = &Apache::lonxml::get_param('color',$parstack,$safeeval);
! 84: my $thickness = &Apache::lonxml::get_param('thickness',$parstack,$safeeval);
! 85: my $i=(++$args{"cgi.$cgi_id.OBJCOUNT"})-1;
! 86: $args{"cgi.$cgi_id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,$color,$thickness));
! 87: $args{"cgi.$cgi_id.OBJTYPE"}.='LINE:';
! 88: }
! 89: return $result;
! 90: }
! 91:
! 92: sub end_line {
! 93: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 94: my $result;
! 95: return $result;
! 96: }
! 97:
! 98: sub start_rectangle {
! 99: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 100: my $result;
! 101: if ($target eq 'web' || $target eq 'tex') {
! 102: my $x1 = &Apache::lonxml::get_param('x1',$parstack,$safeeval);
! 103: my $y1 = &Apache::lonxml::get_param('y1',$parstack,$safeeval);
! 104: my $x2 = &Apache::lonxml::get_param('x2',$parstack,$safeeval);
! 105: my $y2 = &Apache::lonxml::get_param('y2',$parstack,$safeeval);
! 106: my $color = &Apache::lonxml::get_param('color',$parstack,$safeeval);
! 107: my $thickness = &Apache::lonxml::get_param('thickness',$parstack,
! 108: $safeeval);
! 109: my $filled = &Apache::lonxml::get_param('filled',$parstack,
! 110: $safeeval);
! 111: my $i=(++$args{"cgi.$cgi_id.OBJCOUNT"})-1;
! 112: $args{"cgi.$cgi_id.OBJ$i"}=
! 113: join(':',($x1,$y1,$x2,$y2,$color,$thickness,$filled));
! 114: $args{"cgi.$cgi_id.OBJTYPE"}.='RECTANGLE:';
! 115: }
! 116: return $result;
! 117: }
! 118:
! 119: sub end_rectangle {
! 120: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 121: my $result;
! 122: return $result;
! 123: }
! 124:
! 125: sub start_arc {
! 126: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 127: my $result;
! 128: if ($target eq 'web' || $target eq 'tex') {
! 129: my $x = &Apache::lonxml::get_param('x',$parstack,$safeeval);
! 130: my $y = &Apache::lonxml::get_param('y',$parstack,$safeeval);
! 131: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval);
! 132: my $height = &Apache::lonxml::get_param('height',$parstack,$safeeval);
! 133: my $start = &Apache::lonxml::get_param('start',$parstack,$safeeval);
! 134: my $end = &Apache::lonxml::get_param('end',$parstack,$safeeval);
! 135: my $color = &Apache::lonxml::get_param('color',$parstack,$safeeval);
! 136: my $thickness = &Apache::lonxml::get_param('thickness',$parstack,$safeeval);
! 137: my $filled = &Apache::lonxml::get_param('filled',$parstack,$safeeval);
! 138: my $i=(++$args{"cgi.$cgi_id.OBJCOUNT"})-1;
! 139: $args{"cgi.$cgi_id.OBJ$i"}=
! 140: join(':',($x,$y,$width,$height,$start,$end,$color,$thickness,
! 141: $filled));
! 142: $args{"cgi.$cgi_id.OBJTYPE"}.='ARC:';
! 143: }
! 144: return $result;
! 145: }
! 146:
! 147: sub end_arc {
! 148: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 149: my $result;
! 150: return $result;
! 151: }
! 152:
! 153: sub start_arc {
! 154: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 155: my $result;
! 156: if ($target eq 'web' || $target eq 'tex') {
! 157: my $x = &Apache::lonxml::get_param('x',$parstack,$safeeval);
! 158: my $y = &Apache::lonxml::get_param('y',$parstack,$safeeval);
! 159: my $color = &Apache::lonxml::get_param('color',$parstack,$safeeval);
! 160: my $i=(++$args{"cgi.$cgi_id.OBJCOUNT"})-1;
! 161: $args{"cgi.$cgi_id.OBJ$i"}=join(':',($x,$y,$color));
! 162: $args{"cgi.$cgi_id.OBJTYPE"}.='FILL:';
! 163: }
! 164: return $result;
! 165: }
! 166:
! 167: sub end_arc {
! 168: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 169: my $result;
! 170: return $result;
! 171: }
! 172:
! 173:
! 174: 1;
! 175: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to drawimage.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework