--- loncom/homework/imagechoice.pm 2004/01/14 22:59:18 1.3 +++ loncom/homework/imagechoice.pm 2009/02/18 07:06:12 1.16 @@ -1,4 +1,4 @@ -# $Id: imagechoice.pm,v 1.3 2004/01/14 22:59:18 albertel Exp $ +# $Id: imagechoice.pm,v 1.16 2009/02/18 07:06:12 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,55 +25,75 @@ package Apache::imagechoice; use strict; use Apache::Constants qw(:common :http); - +use Apache::lonnet; +use Apache::lonlocal; +use LONCAPA; + sub deletedata { my ($id)=@_; - &Apache::lonnet::delenv("imagechoice\\.$id\\.coords"); + &Apache::lonnet::delenv('imagechoice.'.$id.'.coords'); } sub closewindow { - my ($r,$output,$filename)=@_; - $r->print(<<"ENDSUBM"); - - - +ENDSUBM + + my $start_page = + &Apache::loncommon::start_page('Close Window',$js, + {'bgcolor' => '#FFFFFF', + 'only_body' => 1, + 'add_entries' => { + onload => 'submitthis();'},}); + + my $end_page = + &Apache::loncommon::end_page(); + + $r->print(<<"ENDSUBM"); +$start_page

Position Selected

- - - +$display +$needimage +$end_page ENDSUBM } sub storedata { my ($r,$type,$filename,$id)=@_; - my (undef,@coords)=split(':',$ENV{"imagechoice.$id.coords"}); + my (undef,@coords)=split(':',$env{"imagechoice.$id.coords"}); - my $output; + my ($output,$needimage); - if ($ENV{"imagechoice.$id.formwidth"}) { - $output.='opener.document.forms.'.$ENV{"imagechoice.$id.formname"}.'.'.$ENV{"imagechoice.$id.formwidth"}.'.value=document.pickimg.width;'; + if ($env{"imagechoice.$id.formwidth"}) { + $output.='opener.document.forms.'.$env{"imagechoice.$id.formname"}.'.'.$env{"imagechoice.$id.formwidth"}.'.value=document.pickimg.width;'; + $needimage=1; } - if ($ENV{"imagechoice.$id.formheight"}) { - $output.='opener.document.forms.'.$ENV{"imagechoice.$id.formname"}.'.'.$ENV{"imagechoice.$id.formheight"}.'.value=document.pickimg.height;'; + if ($env{"imagechoice.$id.formheight"}) { + $output.='opener.document.forms.'.$env{"imagechoice.$id.formname"}.'.'.$env{"imagechoice.$id.formheight"}.'.value=document.pickimg.height;'; + $needimage=1; } - if ((defined($ENV{"imagechoice.$id.x"})) && (defined($ENV{"imagechoice.$id.y"})) && - ($type ne 'pairtwo') && ($type ne 'pairthree')) { - my $output=''; - if ($ENV{"imagechoice.$id.formx"}) { - $output.='opener.document.forms.'.$ENV{"imagechoice.$id.formname"}.'.'.$ENV{"imagechoice.$id.formx"}. - '.value='.$ENV{"imagechoice.$id.x"}.';'; + my $display; + if ($type eq 'point') { + my (undef,$x,$y)=split(':',$env{"imagechoice.$id.coords"}); + if ($env{"imagechoice.$id.formx"}) { + $output.='opener.document.forms.'.$env{"imagechoice.$id.formname"}.'.'.$env{"imagechoice.$id.formx"}.'.value='.$x.';'; + $display.="

The X coordinate is $x

\n"; } - if ($ENV{"imagechoice.$id.formy"}) { - $output.='opener.document.forms.'.$ENV{"imagechoice.$id.formname"}.'.'.$ENV{"imagechoice.$id.formy"}. - '.value='.$ENV{"imagechoice.$id.y"}.';'; + if ($env{"imagechoice.$id.formy"}) { + $output.='opener.document.forms.'.$env{"imagechoice.$id.formname"}.'.'.$env{"imagechoice.$id.formy"}.'.value='.$y.';'; + $display.="

The Y coordinate is $y

\n"; } } elsif ($type eq 'polygon' or $type eq 'box') { my $coordstr; @@ -81,148 +101,166 @@ sub storedata { $coordstr.='('.shift(@coords).','.shift(@coords).')-'; } chop($coordstr); - $output.='opener.document.forms.'.$ENV{"imagechoice.$id.formname"}.'.'.$ENV{"imagechoice.$id.formcoord"}.'.value="'.$coordstr.'";'; + $display.="

The selected coordinates are $coordstr

\n"; + $output.='opener.document.forms.'.$env{"imagechoice.$id.formname"}.'.'.$env{"imagechoice.$id.formcoord"}.'.value="'.$coordstr.'";'; + } + if ($display) { + $display.="

If this window fails to close you may need to manually replace the old coordinates with the above value.

\n"; } &deletedata($id); - &closewindow($r,$output,$filename); + &closewindow($r,$output,$filename,$needimage,$display); } sub getcoord { my ($r,$type,$filename,$id)=@_; - my $heading='Position'; + my $heading=&mt('Select Position on Image'); my $nextstage=''; if ($type eq 'box') { - my (undef,@coords)=split(':',$ENV{"imagechoice.$id.coords"}); + my (undef,@coords)=split(':',$env{"imagechoice.$id.coords"}); my $step=scalar(@coords)/2; if ($step == 0) { - $heading='First Coordinate'; + $heading=&mt('Select First Coordinate on Image'); #$nextstage=''; } elsif ($step == 1) { - $heading='Second Coordinate'; + $heading=&mt('Select Second Coordinate on Image'); #$nextstage=''; } else { - $heading='Finish or Cancel'; - $nextstage=''; + $heading=&mt('Select Finish to save selection'); + $nextstage=''; } } elsif ($type eq 'polygon') { - $heading='Enter Coordinate or click finish to close Polygon'; - $nextstage=''; + $heading=&mt('Enter Coordinate or click finish to close Polygon'); + $nextstage=''; + } elsif ($type eq 'point') { + $heading=&mt('Click to select a Coordinate or click Finish to save current selection'); + $nextstage=''; } + + my $start_page = + &Apache::loncommon::start_page('Get Coordinates',undef, + {'bgcolor' => '#FFFFFF', + 'only_body' => 1,}); + + my $end_page = + &Apache::loncommon::end_page(); + my $canceltext=&mt('Cancel'); $r->print(<<"END"); - - -

Select $heading on Image

+$start_page +

$heading

$nextstage - +
- - +$end_page END } sub savecoord { - my ($id)=@_; - if (defined($ENV{"form.image.x"}) && defined($ENV{"form.image.y"})) { - my $data=join(':',($ENV{"imagechoice.$id.coords"},$ENV{"form.image.x"}, - $ENV{"form.image.y"})); - &Apache::lonnet::appenv("imagechoice.$id.coords"=>$data); + my ($id,$type)=@_; + if (defined($env{"form.image.x"}) && defined($env{"form.image.y"})) { + my $data; + if ($type eq 'point') { + $data=join(':',(undef,$env{"form.image.x"},$env{"form.image.y"})); + } else { + $data=join(':',($env{"imagechoice.$id.coords"}, + $env{"form.image.x"},$env{"form.image.y"})); + } + &Apache::lonnet::appenv({"imagechoice.$id.coords"=>$data}); } - return int(scalar(split(':',$ENV{"imagechoice.$id.coords"}))/2); + return int(scalar(split(':',$env{"imagechoice.$id.coords"}))/2); +} + +sub add_obj { + my ($x,$id,$type,$args,$extra)=@_; + + $$x{"cgi.$id.OBJTYPE"}.=$type.':'; + my $i=$$x{"cgi.$id.OBJCOUNT"}++; + $$x{"cgi.$id.OBJ$i"}=$args; + if (defined($extra)) { $$x{"cgi.$id.OBJEXTRA$i"}=$extra; } } sub drawX { - my ($imid,$x,$y)=@_; - my %x; - $x{"cgi.$imid.LINECOUNT"}=4; + my ($data,$imid,$x,$y)=@_; my $length = 6; my $width = 1; my $extrawidth = 2; - $x{"cgi.$imid.LINE0"}= - join(':',(($x-$length),($y-$length),($x+$length),($y+$length), - "FFFFFF",($width+$extrawidth))); - $x{"cgi.$imid.LINE1"}= + &add_obj($data,$imid,'LINE', + join(':',(($x-$length),($y-$length),($x+$length),($y+$length), + "FFFFFF",($width+$extrawidth)))); + &add_obj($data,$imid,'LINE', join(':',(($x-$length),($y+$length),($x+$length),($y-$length), - "FFFFFF",($width+$extrawidth))); - $x{"cgi.$imid.LINE2"}= + "FFFFFF",($width+$extrawidth)))); + &add_obj($data,$imid,'LINE', join(':',(($x-$length),($y-$length),($x+$length),($y+$length), - "FF0000",($width))); - $x{"cgi.$imid.LINE3"}= + "FF0000",($width)))); + &add_obj($data,$imid,'LINE', join(':',(($x-$length),($y+$length),($x+$length),($y-$length), - "FF0000",($width))); - return %x; + "FF0000",($width)))); } sub drawPolygon { - my ($id,$imid)=@_; - my (undef,@coords)=split(':',$ENV{"imagechoice.$id.coords"}); + my ($data,$id,$imid)=@_; + my (undef,@coords)=split(':',$env{"imagechoice.$id.coords"}); my $coordstr; while (@coords) { $coordstr.='('.shift(@coords).','.shift(@coords).')-'; } chop($coordstr); - my %x; my $width = 1; my $extrawidth = 2; - my $i=$x{"cgi.$imid.POLYCOUNT"}++; - $x{"cgi.$imid.POLYOPT$i"}=join(':',("FFFFFF",($width+$extrawidth)),'1'); - $x{"cgi.$imid.POLY$i"}=$coordstr; - $i=$x{"cgi.$imid.POLYCOUNT"}++; - $x{"cgi.$imid.POLYOPT$i"}=join(':',("00FF00",$width),'1'); - $x{"cgi.$imid.POLY$i"}=$coordstr; - return %x; + &add_obj($data,$imid,'POLYGON', + join(':',("FFFFFF",($width+$extrawidth)),'1'),$coordstr); + &add_obj($data,$imid,'POLYGON', + join(':',("00FF00",($width)),'1'),$coordstr); } sub drawBox { - my ($id,$imid)=@_; - my (undef,@coords)=split(':',$ENV{"imagechoice.$id.coords"}); - my %x; - if (scalar(@coords) < 4) { return %x; } + my ($data,$id,$imid)=@_; + my (undef,@coords)=split(':',$env{"imagechoice.$id.coords"}); + if (scalar(@coords) < 4) { return ''; } my $width = 1; my $extrawidth = 2; - my $i=$x{"cgi.$imid.BOXCOUNT"}++; - $x{"cgi.$imid.BOX$i"}=join(':',(@coords,"FFFFFF",($width+$extrawidth))); - $i=$x{"cgi.$imid.BOXCOUNT"}++; - $x{"cgi.$imid.BOX$i"}=join(':',(@coords,"00FF00",$width)); - return %x; + &add_obj($data,$imid,'RECTANGLE', + join(':',(@coords,"FFFFFF",($width+$extrawidth)))); + &add_obj($data,$imid,'RECTANGLE',join(':',(@coords,"00FF00",$width))); } sub drawimage { my ($r,$type,$filename,$id)=@_; my $imid=&Apache::loncommon::get_cgi_id(); - my (undef,@coords)=split(':',$ENV{"imagechoice.$id.coords"}); + my (undef,@coords)=split(':',$env{"imagechoice.$id.coords"}); if (scalar(@coords) < 2) { return &Apache::lonnet::hreflocation('',$filename); } my %data; $data{"cgi.$imid.BGIMG"}=$filename; my $x=$coords[-2]; my $y=$coords[-1]; - %data=(%data,&drawX($imid,$x,$y)); - if ($type eq "polygon") { %data=(%data,&drawPolygon($id,$imid)); } - if ($type eq "box") { %data=(%data,&drawBox($id,$imid)); } - &Apache::lonnet::appenv(%data); + &drawX(\%data,$imid,$x,$y); + if ($type eq "polygon") { &drawPolygon(\%data,$id,$imid); } + if ($type eq "box") { &drawBox(\%data,$id,$imid); } + &Apache::lonnet::appenv(\%data); return "/adm/randomlabel.png?token=$imid" } sub handler { my ($r)=@_; - $r->content_type('text/html'); + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; my %data; my (undef,$id) = split(/=/,$ENV{'QUERY_STRING'}); - my $filename = &Apache::lonnet::unescape($ENV{"imagechoice.$id.file"}); - my $formname = $ENV{"imagechoice.$id.formname"}; - if ($ENV{'form.cancel'} eq 'Cancel') { + my $filename = &unescape($env{"imagechoice.$id.file"}); + my $formname = $env{"imagechoice.$id.formname"}; + if ($env{'form.cancel'} eq &mt('Cancel')) { &deletedata($id); &closewindow($r,'',$filename); return OK; } - my $type=$ENV{"imagechoice.$id.type"}; - if (defined($ENV{'form.type'})) { $type=$ENV{'form.type'}; } - my $numcoords=&savecoord($id); - &Apache::lonnet::logthis("num coords is $numcoords"); + my $type=$env{"imagechoice.$id.type"}; + if (defined($env{'form.type'})) { $type=$env{'form.type'}; } + my $numcoords=&savecoord($id,$type); my $imurl=&drawimage($r,$type,$filename,$id); - if (($ENV{'form.finish'} eq 'Finish')) { + if ($env{'form.finish'} eq &mt('Finish')) { &storedata($r,$type,$imurl,$id); } else { &getcoord($r,$type,$imurl,$id);