1: # The LearningOnline Network with CAPA
2: # Quick Student Grades Display
3: #
4: # $Id: lonquickgrades.pm,v 1.98 2011/06/02 01:34:34 www 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::lonquickgrades;
30:
31: use strict;
32: use Apache::Constants qw(:common :http);
33: use POSIX;
34: use Apache::loncommon;
35: use Apache::lonlocal;
36: use Apache::lonnet;
37: use Apache::grades;
38: use Time::HiRes;
39: my $time=0;
40:
41: sub tim {
42: my ($label)=@_;
43: my $tt=&Time::HiRes::time();
44: my $dt=$tt-$time;
45: &Apache::lonnet::logthis("qg $label ".$dt);
46: $time=$tt;
47: }
48:
49:
50: sub handler {
51: my $r = shift;
52: return real_handler($r);
53: }
54:
55: sub real_handler {
56: my $r = shift;
57:
58: &Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
59:
60: # Handle header-only request
61: if ($env{'browser.mathml'}) {
62: &Apache::loncommon::content_type($r,'text/xml');
63: } else {
64: &Apache::loncommon::content_type($r,'text/html');
65: }
66: if ($r->header_only) {
67: $r->send_http_header;
68: return OK;
69: }
70:
71: # Send header, don't cache this page
72: &Apache::loncommon::no_cache($r);
73: $r->send_http_header;
74:
75: my $showPoints =
76: (($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'standard')
77: || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'categories'));
78: my $notshowSPRSlink =
79: (($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'external')
80: || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals'));
81: my $notshowTotals=
82: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals';
83: my $showCategories=
84: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'categories';
85:
86:
87: my $title = "Grading and Statistics";#$showPoints ? "Points Display" : "Completed Problems Display";
88: my $brcrum = [{href=>"/adm/quickgrades",text => "Points Display"}];
89: $r->print(&Apache::loncommon::start_page($title,undef,
90: {'bread_crumbs' => $brcrum})
91: );
92:
93: &startGradeScreen($r,'quick');
94:
95: my $cangrade=&Apache::lonnet::allowed('mgr');
96: #
97: # Pick student
98: #
99: my $uname;
100: my $udom;
101: my $stdid;
102: if ($cangrade) {
103: if ($env{'form.uname'}) { $uname=$env{'form.uname'}; }
104: if ($env{'form.udom'}) { $udom=$env{'form.udom'}; }
105: if ($env{'form.id'}) { $stdid=$env{'form.id'}; }
106: if (($stdid) && ($udom)) {
107: $uname=(&Apache::lonnet::idget($udom,$stdid))[1];
108: }
109: if (($stdid) && (!$uname)) {
110: $r->print('<p><span class="LC_warning">'.&mt("Unknown Student/Employee ID: [_1]",$stdid).'</span></p>');
111: $stdid='';
112: }
113: $r->print('<form method="post" name="quickform" action="/adm/quickgrades">');
114: my $chooseopt=&Apache::loncommon::select_dom_form($udom,'udom').' '.
115: &Apache::loncommon::selectstudent_link('quickform','uname','udom');
116: $r->print("<p>\n".&Apache::loncommon::studentbrowser_javascript()."\n");
117: $r->print(&mt('For User [_1] or Student/Employee ID [_2] at Domain [_3]'
118: ,'<input type="text" value="'.$uname.'" size="12" name="uname" />'
119: ,'<input type="text" value="'.$stdid.'" size="12" name="id" /> '
120: ,$chooseopt).'<br />'.
121: '<input type="submit" name="display" value="'.&mt('Update Display').'" /></p>');
122: if (($uname) && ($udom)) {
123: $r->print('<p>'.&mt('Full Name: [_1]',&Apache::loncommon::plainname($uname,$udom)).'</p>');
124: }
125: }
126: $r->rflush();
127:
128: my ($navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted)=
129: &getData($showPoints,$uname,$udom);
130:
131: if ($showCategories) {
132: &outputCategories($r,$showPoints,$notshowTotals,
133: $navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted);
134: } else {
135: &outputTable($r,$showPoints,$notshowTotals,
136: $navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted);
137: }
138: if ($cangrade) { $r->print("\n</form>\n"); }
139: &endGradeScreen($r);
140: return OK;
141:
142: }
143:
144: sub startGradeScreen {
145: my ($r,$mode)=@_;
146:
147: my $showPoints =
148: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'standard';
149: my $notshowSPRSlink =
150: (($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'external')
151: || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals')
152: || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'categories'));
153: my $notshowTotals=
154: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals';
155: my $showCategories=
156: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'categories';
157:
158: my $allowed_to_view = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
159: my $allowed_to_edit = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
160:
161: if ($allowed_to_view) {
162: my @notes;
163: push(@notes,&mt('Students do not see total points.')) if ($notshowTotals);
164: push(@notes,&mt('Students do not see link to spreadsheet.')) if ($notshowSPRSlink);
165: push(@notes,&mt('Students will see points based on problem weights.')) if ($showPoints);
166: push(@notes,&mt('Students will see points based on categories.')) if ($showCategories);
167: push(@notes, &Apache::lonhtmlcommon::coursepreflink(&mt('Grade display settings'),'grading'));
168: $r->print(&Apache::loncommon::head_subbox(join(' ',@notes)));
169: }
170:
171:
172: $r->print("\n".'<ul class="LC_TabContentBigger" id="main">');
173: $r->print("\n".'<li'.($mode eq 'quick'?' class="active"':'').'><a href="/adm/quickgrades"><b> '.
174: ($showPoints?&mt('Individual Points Overview'):($showCategories?&mt('Grades Overview'):&mt('Completion Overview'))).
175: ' </b></a></li>');
176:
177: if (!($showPoints || $notshowSPRSlink) || ($allowed_to_view)) {
178: $r->print("\n".'<li'.($mode eq 'spreadsheet'?' class="active"':'').'><a href="/adm/'.($allowed_to_view?'classcalc':'studentcalc').'"><b>'.
179: &mt('Spreadsheet (Detailed)').'</b></a></li>');
180: }
181: if ($allowed_to_view) {
182: $r->print("\n".'<li'.($mode eq 'statistics'?' class="active"':'').'><a href="/adm/statistics"><b>'.
183: &mt('Statistics and Reports').'</b></a></li>');
184:
185: $r->print("\n".'<li'.($mode eq 'chart'?' class="active"':'').'><a href="/adm/statistics?reportSelected=student_assessment"><b>'.
186: &mt('Assessment Overview Chart').'</b></a></li>');
187:
188: }
189: if ($allowed_to_edit) {
190: $r->print("\n".'<li'.($mode eq 'grading'?' class="active"':'').'><a href="/adm/grades"><b> '.
191: &mt('Content Grading').' </b></a></li>');
192: if ($env{'form.symb'}) {
193: $r->print("\n".'<li'.($mode eq 'probgrading'?' class="active"':'').'><a href="/adm/grades?symb='.
194: &Apache::lonhtmlcommon::entity_encode($env{'form.symb'}).
195: '&command=gradingmenu"><b> '.
196: &mt('Problem Grading').' </b></a></li>');
197:
198: }
199: }
200: $r->print("\n".'</ul>'."\n");
201: $r->print('<div class="LC_Box" style="clear:both;margin:0;"><div id="maincoursedoc" style="margin:0 0;padding:0 0;"><div class="LC_ContentBox" id="mainCourseDocuments" style="display: block;">');
202: }
203:
204: sub endGradeScreen {
205: my ($r)=@_;
206: $r->print('</div></div></div>'.&Apache::loncommon::end_page());
207: }
208:
209:
210: sub getData {
211:
212: my ($showPoints,$uname,$udom)=@_;
213:
214: # Create the nav map
215: my $navmap = Apache::lonnavmaps::navmap->new($uname,$udom);
216:
217: my $res = $navmap->firstResource(); # temp resource to access constants
218:
219: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
220: my $depth = 1;
221: $iterator->next(); # ignore first BEGIN_MAP
222: my $curRes = $iterator->next();
223:
224: # General overview of the following: Walk along the course resources.
225: # For every problem in the resource, tell its parent maps how many
226: # parts and how many parts correct it has. After that, each map will
227: # have a count of the total parts underneath it, correct and otherwise.
228: # After that, we will walk through the course again and read off
229: # maps in order, with their data.
230: # (If in the future people decide not to be cumulative, only add
231: # the counts to the parent map.)
232: # For convenience, "totalParts" is also "totalPoints" when we're looking
233: # at points; I can't come up with a variable name that makes sense
234: # equally for both cases.
235:
236: my $totalParts = 0; my $totalPossible = 0; my $totalRight = 0;
237: my $totalAttempted = 0;
238: my $now = time();
239: my $topLevelParts = 0; my $topLevelRight = 0; my $topLevelAttempted = 0;
240:
241: # Pre-run: Count parts correct
242: while ( $depth > 0 ) {
243: if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
244: if ($curRes == $iterator->END_MAP()) { $depth--; }
245:
246: if (ref($curRes) && $curRes->is_problem() && !$curRes->randomout)
247: {
248: # Get number of correct, incorrect parts
249: my $parts = $curRes->parts();
250: my $partsRight = 0;
251: my $partsCount = 0;
252: my $partsAttempted = 0;
253: my $stack = $iterator->getStack();
254:
255: for my $part (@{$parts}) {
256: my $dateStatus = $curRes->getDateStatus($part);
257: my $weight = $curRes->weight($part);
258: my $problemstatus = $curRes->problemstatus($part);
259:
260: if ($curRes->solved($part) eq 'excused') {
261: next;
262: }
263: if ($showPoints) {
264: my $score = 0;
265: # If we're not telling status and the answer date isn't passed yet,
266: # it's an "attempted" point
267: if ((($problemstatus eq 'no') ||
268: ($problemstatus eq 'no_feedback_ever')) &&
269: ($dateStatus != $curRes->ANSWER_OPEN)) {
270: my $status = $curRes->simpleStatus($part);
271: if ($status == $curRes->ATTEMPTED) {
272: $partsAttempted += $weight;
273: $totalAttempted += $partsAttempted;
274: }
275: } else {
276: $score = &Apache::grades::compute_points($weight, $curRes->awarded($part));
277: }
278: $partsRight += $score;
279: $totalRight += $score;
280: $partsCount += $weight;
281:
282: $curRes->{DATA}->{PROB_SCORE} += $score;
283: $curRes->{DATA}->{PROB_WEIGHT} += $weight;
284:
285: if ($curRes->opendate($part) < $now) {
286: $totalPossible += $weight;
287: $curRes->{DATA}->{PROB_POSSIBLE} += $weight;
288: }
289: $totalParts += $weight;
290: } else {
291: my $status = $curRes->simpleStatus($part);
292: my $thisright = 0;
293: $partsCount++;
294: if ($status == $curRes->CORRECT ||
295: $status == $curRes->PARTIALLY_CORRECT ) {
296: $partsRight++;
297: $totalRight++;
298: $thisright = 1;
299: }
300:
301: if ($status == $curRes->ATTEMPTED) {
302: $partsAttempted++;
303: $totalAttempted++;
304: }
305:
306: $totalParts++;
307: if ($curRes->opendate($part) < $now) {
308: $totalPossible++;
309: }
310: }
311: }
312:
313: if ($depth == 1) { # in top-level only
314: $topLevelParts += $partsCount;
315: $topLevelRight += $partsRight;
316: $topLevelAttempted += $partsAttempted;
317: }
318:
319: # Crawl down stack and record parts correct and total
320: for my $res (@{$stack}) {
321: if (ref($res) && $res->is_map()) {
322: if (!defined($res->{DATA}->{CHILD_PARTS})) {
323: $res->{DATA}->{CHILD_PARTS} = 0;
324: $res->{DATA}->{CHILD_CORRECT} = 0;
325: $res->{DATA}->{CHILD_ATTEMPTED} = 0;
326: }
327:
328: $res->{DATA}->{CHILD_PARTS} += $partsCount;
329: $res->{DATA}->{CHILD_CORRECT} += $partsRight;
330: $res->{DATA}->{CHILD_ATTEMPTED} += $partsAttempted;
331: }
332: }
333: }
334: $curRes = $iterator->next();
335: }
336: return ($navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted);
337: }
338:
339: #
340: # Outputting everything.
341: #
342:
343: sub outputTable {
344:
345: my ($r,$showPoints,$notshowTotals,
346: $navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted)=@_;
347:
348: my @start = (255, 255, 192);
349: my @end = (0, 192, 0);
350:
351: my $indentString = ' ';
352:
353: # Second pass: Print the maps.
354: $r->print(&Apache::loncommon::start_data_table()
355: .&Apache::loncommon::start_data_table_header_row()
356: .'<th>'.&mt('Folder').'</th>');
357: my $title = &mt($showPoints ? "Points Scored" : "Done");
358: if ($totalAttempted) {
359: $title .= " / " . &mt("Attempted");
360: }
361: $r->print("<th>$title".($notshowTotals?'':" / ".&mt('Total')).'</th>'
362: .&Apache::loncommon::end_data_table_header_row());
363: #
364: # Output of folder scores
365: #
366:
367: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
368: my $depth = 1;
369: $iterator->next(); # ignore first BEGIN_MAP
370: my $curRes = $iterator->next();
371:
372: while ($depth > 0) {
373: if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
374: if ($curRes == $iterator->END_MAP()) { $depth--; }
375:
376: if (ref($curRes) && $curRes->is_map()) {
377: my $title = $curRes->compTitle();
378:
379: my $correct = $curRes->{DATA}->{CHILD_CORRECT};
380: my $total = $curRes->{DATA}->{CHILD_PARTS};
381: my $attempted = $curRes->{DATA}->{CHILD_ATTEMPTED};
382:
383: if ($total > 0) {
384: my $ratio;
385: $ratio = $correct / $total;
386: my $color = &mixColors(\@start, \@end, $ratio);
387: $r->print(&Apache::loncommon::start_data_table_row()
388: .'<td style="background-color:'.$color.';">');
389:
390: my $thisIndent = '';
391: for (my $i = 1; $i < $depth; $i++) { $thisIndent .= $indentString; }
392:
393: $r->print("$thisIndent$title</td>");
394: if ($totalAttempted) {
395: $r->print('<td valign="top">'
396: .$thisIndent
397: .'<span class="LC_nobreak">'
398: .$correct.' / '.$attempted.($notshowTotals?'':' / '.$total)
399: .'</span></td>'
400: .&Apache::loncommon::end_data_table_row()
401: );
402: } else {
403: $r->print('<td valign="top">'
404: .$thisIndent
405: .'<span class="LC_nobreak">'
406: .$correct.($notshowTotals?'':' / '.$total)
407: .'</span></td>'
408: .&Apache::loncommon::end_data_table_row());
409: }
410: }
411: }
412:
413: $curRes = $iterator->next();
414: }
415:
416: # If there were any problems at the top level, print an extra "catchall"
417: if ($topLevelParts > 0) {
418: my $ratio = $topLevelRight / $topLevelParts;
419: my $color = &mixColors(\@start, \@end, $ratio);
420: $r->print(&Apache::loncommon::start_data_table_row()
421: .'<td style="background-color:'.$color.';">');
422: $r->print(&mt("Problems Not Contained In A Folder")."</td><td>");
423: $r->print("$topLevelRight / $topLevelParts</td>"
424: .&Apache::loncommon::end_data_table_row());
425: }
426:
427: #
428: # show totals (if applicable), close table
429: #
430: if ($showPoints) {
431: my $maxHelpLink = &Apache::loncommon::help_open_topic("Quick_Grades_Possibly_Correct");
432:
433: $title = $showPoints ? "Points" : "Parts Done";
434: my $totaltitle = $showPoints ? &mt("Awarded Total Points") : &mt("Total Parts Done");
435: $r->print(&Apache::loncommon::start_data_table_row()
436: .'<td colspan="2" align="right">'.$totaltitle.': <b>'.$totalRight.'</b><br />');
437: $r->print(&mt('Max Possible To Date')." $maxHelpLink: <b>$totalPossible</b><br />");
438: $title = $showPoints ? "Points" : "Parts";
439: $r->print(&mt("Total $title In Course").': <b>'.$totalParts.'</b></td>'
440: .&Apache::loncommon::end_data_table_row());
441: }
442:
443: $r->print(&Apache::loncommon::end_data_table());
444: }
445:
446: #
447: # === Outputting category-based grades.
448: #
449: # $category{'order'}: output order of categories by id
450: # $category{'all'}: complete list of all categories
451: # $category{$id.'_name'}: display-name of category
452: #
453:
454: sub outputCategories {
455:
456: my ($r,$showPoints,$notshowTotals,
457: $navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted)=@_;
458: # Take care of storing and retrieving categories
459:
460: my $cangrade=&Apache::lonnet::allowed('mgr');
461:
462: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
463: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
464: my %categories=();
465: # Loading old categories
466: %categories=&Apache::lonnet::dump('grading_categories',$cdom,$cnum);
467: # Storing
468: if (($cangrade) && (($env{'form.storechanges'}) || ($env{'form.storemove'} ne '') || ($env{'form.cmd'} ne ''))) {
469: # Process the changes
470: %categories=&process_category_edits($r,$cangrade,%categories);
471: # Actually store
472: &Apache::lonnet::put('grading_categories',\%categories,$cdom,$cnum);
473: }
474: # new categories loaded now
475: &output_category_table($r,$cangrade,$navmap,%categories);
476: #
477: if ($cangrade) {
478: $r->print(&Apache::loncommon::resourcebrowser_javascript().
479: '<input type="hidden" name="storemove" value="" />'.
480: '<input type="hidden" name="cmd" value="" />'.
481: '<input type="hidden" name="resourcesymb" value="" />'.
482: '<input type="submit" name="storechanges" value="'.&mt("Save changes to grading categories").'" />'.
483: '<script>function storecmd (cmd) { document.quickform.cmd.value=cmd; document.quickform.submit(); }</script>');
484: }
485: #
486: # Debug
487: #
488: # my %data=&dumpdata($navmap);
489: # foreach (keys(%data)) {
490: # $r->print("\n<br />".$_.'='.$data{$_});
491: # }
492: # my @debugarray=('5:1','4:3','1:1','5:5','6:7');
493: # $r->print("Array: ".join(',',@debugarray).'<br />');
494: # $r->print("0,0,0: ".join(',',&drop(0,0,0,@debugarray)).'<br />');
495: # $r->print("1,0,0: ".join(',',&drop(1,0,0,@debugarray)).'<br />');
496: # $r->print("0,1,0: ".join(',',&drop(0,1,0,@debugarray)).'<br />');
497: # $r->print("1,1,0: ".join(',',&drop(1,1,0,@debugarray)).'<br />');
498: #
499: # $r->print("0,0,2: ".join(',',&drop(0,0,2,@debugarray)).'<br />');
500: # $r->print("1,0,2: ".join(',',&drop(1,0,2,@debugarray)).'<br />');
501: # $r->print("0,1,2: ".join(',',&drop(0,1,2,@debugarray)).'<br />');
502: # $r->print("1,1,2: ".join(',',&drop(1,1,2,@debugarray)).'<br />');
503: #
504: # $r->print("0,0,4: ".join(',',&drop(0,0,4,@debugarray)).'<br />');
505: # $r->print("1,0,4: ".join(',',&drop(1,0,4,@debugarray)).'<br />');
506: # $r->print("0,1,4: ".join(',',&drop(0,1,4,@debugarray)).'<br />');
507: # $r->print("1,1,4: ".join(',',&drop(1,1,4,@debugarray)).'<br />');
508: #
509: # $r->print("0,0,5: ".join(',',&drop(0,0,5,@debugarray)).'<br />');
510: # $r->print("1,0,5: ".join(',',&drop(1,0,5,@debugarray)).'<br />');
511: # $r->print("0,1,5: ".join(',',&drop(0,1,5,@debugarray)).'<br />');
512: # $r->print("1,1,5: ".join(',',&drop(1,1,5,@debugarray)).'<br />');
513: #
514: # $r->print("0,0,7: ".join(',',&drop(0,0,7,@debugarray)).'<br />');
515: # $r->print("1,0,7: ".join(',',&drop(1,0,7,@debugarray)).'<br />');
516: # $r->print("0,1,7: ".join(',',&drop(0,1,7,@debugarray)).'<br />');
517: # $r->print("1,1,7: ".join(',',&drop(1,1,7,@debugarray)).'<br />');
518:
519: }
520:
521: #
522: # Get data for all symbs
523: #
524:
525: sub dumpdata {
526: my ($navmap)=@_;
527: my %returndata=();
528:
529: # Run through the map and get all data
530:
531: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
532: my $depth = 1;
533: $iterator->next(); # ignore first BEGIN_MAP
534: my $curRes = $iterator->next();
535:
536: while ($depth > 0) {
537: if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
538: if ($curRes == $iterator->END_MAP()) { $depth--; }
539: if (ref($curRes)) {
540: if ($curRes->is_map()) {
541: $returndata{$curRes->symb()}='folder:'.$curRes->{DATA}->{CHILD_PARTS}.':'.$curRes->{DATA}->{CHILD_ATTEMPTED}.':'.$curRes->{DATA}->{CHILD_CORRECT};
542: } else {
543: $returndata{$curRes->symb()}='res:'.$curRes->{DATA}->{PROB_WEIGHT}.':'.$curRes->{DATA}->{PROB_POSSIBLE}.':'.$curRes->{DATA}->{PROB_SCORE};
544: }
545: }
546: $curRes = $iterator->next();
547: }
548: return %returndata;
549: }
550:
551: #
552: # Process editing commands, update category hash
553: #
554:
555: sub process_category_edits {
556: my ($r,$cangrade,%categories)=@_;
557: unless ($cangrade) { return %categories; }
558: # First store everything
559: foreach my $id (split(/\,/,$categories{'order'})) {
560: # Set names, types, and weight (there is only one of each per category)
561: %categories=&set_category_name($cangrade,$id,$env{'form.name_'.$id},%categories);
562: %categories=&set_category_total($cangrade,$id,$env{'form.totaltype_'.$id},$env{'form.total_'.$id},%categories);
563: %categories=&set_category_weight($cangrade,$id,$env{'form.weight_'.$id},%categories);
564: %categories=&set_category_displayachieved($cangrade,$id,$env{'form.displayachieved_'.$id},%categories);
565: # Set values for category rules (before names may change)
566: %categories=&set_category_rules($cangrade,$id,%categories);
567: }
568:
569: # Now deal with commands
570: my $cmd=$env{'form.cmd'};
571: if ($cmd eq 'createnewcat') {
572: %categories=&make_new_category($r,$cangrade,undef,%categories);
573: } elsif ($cmd=~/^up\_(.+)$/) {
574: %categories=&move_up_category($1,$cangrade,%categories);
575: } elsif ($cmd=~/^down\_(.+)$/) {
576: %categories=&move_down_category($1,$cangrade,%categories);
577: } elsif ($cmd=~/^delcat\_(.+)$/) {
578: %categories=&del_category($1,$cangrade,%categories);
579: } elsif ($cmd=~/^addcont\_(.+)$/) {
580: %categories=&add_category_content($1,$cangrade,$env{'form.resourcesymb'},%categories);
581: } elsif ($cmd=~/^delcont\_(.+)\_\_\_\_\_\_(.+)$/) {
582: %categories=&del_category_content($1,$cangrade,$2,%categories);
583: } elsif ($cmd=~/^newrule\_(.+)$/) {
584: %categories=&add_calculation_rule($1,$cangrade,':',%categories);
585: } elsif ($cmd=~/^delrule\_(.+)\_\_\_\_\_\_(.*)$/) {
586: %categories=&del_calculation_rule($1,$cangrade,$2,%categories);
587: }
588: # Move to a new position
589: my $moveid=$env{'form.storemove'};
590: if ($moveid) {
591: %categories=&move_category($moveid,$cangrade,$env{'form.newpos_'.$moveid},%categories);
592: }
593: return %categories;
594: }
595:
596: #
597: # Output the table
598: #
599:
600: sub output_category_table {
601: my ($r,$cangrade,$navmaps,%categories)=@_;
602:
603: my $totalweight=0;
604: my $totalpoints=0;
605:
606: $r->print(&Apache::loncommon::start_data_table());
607: #
608: &output_category_table_header($r,$cangrade);
609: #
610: my @order=split(/\,/,$categories{'order'});
611: #
612: my %performance=&dumpdata($navmaps);
613: my $maxpos=$#order;
614: for (my $i=0;$i<=$maxpos;$i++) {
615: my ($correct,$possible,$type,$weight)=&output_and_calc_category($r,$cangrade,$navmaps,$order[$i],$i,$maxpos,\%performance,1,%categories);
616: unless ($possible) { next; }
617: $totalpoints+=$weight*$correct/$possible;
618: $totalweight+=$weight;
619: }
620: #
621: my $perc=0;
622: if ($totalweight) { $perc=100.*$totalpoints/$totalweight; }
623:
624: &bottom_line_category($r,$cangrade,$perc);
625: #
626: $r->print(&Apache::loncommon::end_data_table());
627: return $perc;
628: }
629:
630: sub output_category_table_header {
631: my ($r,$cangrade)=@_;
632: $r->print(&Apache::loncommon::start_data_table_header_row());
633: if ($cangrade) {
634: $r->print('<th colspan="2">'.&mt("Move").'</th><th>'.&mt('Action').'</th>');
635: }
636: $r->print('<th>'.&mt('Category').'</th>'.
637: '<th>'.&mt('Contents').'</th>'.
638: '<th>'.&mt('Total Points').'</th>'.
639: '<th>'.&mt('Calculation').'</th>'.
640: '<th>'.&mt('Relative Weight').'</th>'.
641: '<th>'.&mt('Achieved').'</th>');
642: $r->print(&Apache::loncommon::end_data_table_header_row());
643: }
644:
645:
646: #
647: # Output one category to table
648: #
649:
650: sub output_and_calc_category {
651: my ($r,$cangrade,$navmaps,$id,$currentpos,$maxpos,$performance,$output,%categories)=@_;
652:
653: my $iconpath = &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL') . "/");
654: my %lt=&Apache::lonlocal::texthash(
655: 'up' => 'Move Up',
656: 'dw' => 'Move Down');
657: if ($output) { $r->print("\n".&Apache::loncommon::start_data_table_row()); }
658:
659: if ($output && $cangrade) {
660: $r->print(<<ENDMOVE);
661: <td>
662: <div class="LC_docs_entry_move">
663: <a href='javascript:storecmd("up_$id");'>
664: <img src="${iconpath}move_up.gif" alt='$lt{'up'}' class="LC_icon" />
665: </a>
666: </div>
667: <div class="LC_docs_entry_move">
668: <a href='javascript:storecmd("down_$id");'>
669: <img src="${iconpath}move_down.gif" alt='$lt{'dw'}' class="LC_icon" />
670: </a>
671: </div>
672: </td>
673: ENDMOVE
674: $r->print("\n<td>\n<select name='newpos_$id' onchange='this.form.storemove.value=\"$id\";this.form.submit()'>");
675: for (my $i=0;$i<=$maxpos;$i++) {
676: if ($i==$currentpos) {
677: $r->print('<option value="" selected="selected">('.$i.')</option>');
678: } else {
679: $r->print('<option value="'.$i.'">'.$i.'</option>');
680: }
681: }
682: $r->print("\n</select>\n</td>\n");
683: $r->print('<td><a href="javascript:storecmd(\'delcat_'.$id.'\');">'.&mt('Delete').'</a></td>');
684: $r->print('<td><input type="text" name="name_'.$id.
685: '" value="'.&Apache::lonhtmlcommon::entity_encode($categories{$id.'_name'}).'" /></td>');
686: } elsif ($output) {
687: $r->print('<td>'.$categories{$id.'_name'}.'</td>');
688: }
689: # Content display and summing up of points
690: my $totalpossible=0;
691: my $totalcorrect=0;
692: my @individual=();
693: if ($output) { $r->print('<td><ul>'); }
694: foreach my $contentid (split(/\,/,$categories{$id.'_content'})) {
695: my ($type,$possible,$attempted,$correct)=split(/\:/,$$performance{$contentid});
696: $totalpossible+=$possible;
697: $totalcorrect+=$correct;
698: if ($possible>0) { push(@individual,"$possible:$correct"); }
699: if ($output) {
700: $r->print('<li>');
701: $r->print(&Apache::lonnet::gettitle($contentid).' ('.&numberout($correct).'/'.&numberout($possible).')');
702: if ($cangrade) {
703: $r->print(' <a href="javascript:storecmd(\'delcont_'.$id.'______'.$contentid.'\');">'.&mt('Delete').'</a>');
704: }
705: $r->print('</li>');
706: }
707: }
708: if ($output) {
709: $r->print('</ul>');
710: if ($cangrade) {
711: $r->print('<br />'.&Apache::loncommon::selectresource_link('quickform','addcont_'.$id,&mt('Add Problem or Folder')).'<br />');
712: }
713: $r->print('<p><b>'.&mt('Total raw points: [_1]/[_2]',&numberout($totalcorrect),&numberout($totalpossible)).'</b></p>');
714: $r->print('</td>');
715: }
716: # Total
717: if ($output) { $r->print('<td>'); }
718: if ($cangrade) {
719: if ($output) {
720: $r->print(
721: '<select name="totaltype_'.$id.'">'.
722: '<option value="default"'.($categories{$id.'_totaltype'} eq 'default'?' selected="selected"':'').'>'.&mt('default').'</option>'.
723: '<option value="typein"'.($categories{$id.'_totaltype'} eq 'typein'?' selected="selected"':'').'>'.&mt('Type-in value').'</option>'.
724: '</select>'.
725: '<input type="text" size="4" name="total_'.$id.
726: '" value="'.&Apache::lonhtmlcommon::entity_encode($categories{$id.'_total'}).'" />');
727: }
728: } else {
729: if ($output) {
730: $r->print('<td>'.($categories{$id.'_totaltype'} eq 'default'?&mt('default'):$categories{$id.'_total'}));
731: }
732: }
733: # Adjust total points
734: if ($categories{$id.'_totaltype'} eq 'typein') {
735: $totalpossible=1.*$categories{$id.'_total'};
736: }
737: if ($output) {
738: $r->print('<p><b>'.&mt('Adjusted raw points: [_1]/[_2]',&numberout($totalcorrect),&numberout($totalpossible)).'</b></p>');
739: }
740:
741:
742: # Calculation
743: if ($output) { $r->print('<td><ul>'); }
744: foreach my $calcrule (split(/\,/,$categories{$id.'_calculations'})) {
745: if ($output) { $r->print('<li>'); }
746: my ($code,$value)=split(/\:/,$calcrule);
747: if ($output) { $r->print(&pretty_prt_rule($cangrade,$id,$code,$value)); }
748: if ($cangrade) {
749: if ($output) { $r->print(' <a href="javascript:storecmd(\'delrule_'.$id.'______'.$code.'\');">'.&mt('Delete').'</a>'); }
750: }
751: if ($code eq 'capabove') {
752: if ($totalpossible>0) {
753: if ($totalcorrect/$totalpossible>$value/100.) {
754: $totalcorrect=$totalpossible*$value/100.;
755: }
756: }
757: } elsif ($code eq 'capbelow') {
758: if ($totalpossible>0) {
759: if ($totalcorrect/$totalpossible<$value/100.) {
760: $totalcorrect=$totalpossible*$value/100.;
761: }
762: }
763: } elsif ($code eq 'droplow') {
764: ($totalpossible,$totalcorrect,@individual)=&drop(0,0,$value,@individual);
765: } elsif ($code eq 'drophigh') {
766: ($totalpossible,$totalcorrect,@individual)=&drop(1,0,$value,@individual);
767: } elsif ($code eq 'droplowperc') {
768: ($totalpossible,$totalcorrect,@individual)=&drop(0,1,$value,@individual);
769: } elsif ($code eq 'drophighperc') {
770: ($totalpossible,$totalcorrect,@individual)=&drop(1,1,$value,@individual);
771: }
772: if ($output) { $r->print('</li>'); }
773: }
774: # Re-adjust total points if force total
775: if ($categories{$id.'_totaltype'} eq 'typein') {
776: $totalpossible=1.*$categories{$id.'_total'};
777: }
778:
779: if ($output) {
780: $r->print('</ul>');
781: if ($cangrade) { $r->print('<br />'.&new_calc_rule_form($id)); }
782: $r->print('<p><b>'.&mt('Calculated points: [_1]/[_2]',&numberout($totalcorrect),&numberout($totalpossible)).'</b></p>');
783: $r->print('</td>');
784: }
785: #
786: # Prepare for export
787: #
788: # Weight
789: my $weight=$categories{$id.'_weight'};
790: unless (1.*$weight>0) { $weight=0; }
791: if ($cangrade) {
792: if ($output) {
793: $r->print('<td>'.
794: '<input type="text" size="4" name="weight_'.$id.
795: '" value="'.&Apache::lonhtmlcommon::entity_encode($weight).'" /></td>');
796: }
797: } else {
798: if ($output) {
799: $r->print('<td>'.$weight.'</td>');
800: }
801: }
802: # Achieved
803: my $type=$categories{$id.'_displayachieved'};
804: unless (($type eq 'percent') || ($type eq 'points')) { $type='points'; }
805: if ($output) { $r->print('<td>'); }
806: if ($cangrade) {
807: if ($output) {
808: $r->print('<select name="displayachieved_'.$id.'">'.
809: '<option value="percent"'.($type eq 'percent'?' selected="selected"':'').'>'.&mt('percent').'</option>'.
810: '<option value="points"'.($type eq 'points'?' selected="selected"':'').'>'.&mt('points').'</option>'.
811: '</select>');
812: }
813: }
814: if ($output) {
815: $r->print('<p><b>');
816: if ($type eq 'percent') {
817: my $perc='---';
818: if ($totalpossible) {
819: $perc=100.*$totalcorrect/$totalpossible;
820: }
821: $r->print(&mt('[_1] percent',&numberout($perc)));
822: } else {
823: $r->print(&mt('[_1]/[_2] points',&numberout($totalcorrect),&numberout($totalpossible)));
824: }
825: $r->print('</b></p>');
826: }
827: if ($output) { $r->print('</td>'); }
828:
829: return ($totalcorrect,$totalpossible,$type,$weight);
830: }
831:
832: #
833: # Drop folders and problems
834: #
835:
836: sub drop {
837: my ($high,$percent,$n,@individual)=@_;
838: # Sort assignments by points or percent
839: my @newindividual=sort {
840: my ($pa,$ca)=split(/\:/,$a);
841: my ($pb,$cb)=split(/\:/,$b);
842: if ($percent) {
843: my $perca=0;
844: if ($pa>0) { $perca=$ca/$pa; }
845: my $percb=0;
846: if ($pb>0) { $percb=$cb/$pb; }
847: $perca<=>$percb;
848: } else {
849: $ca<=>$cb;
850: }
851: } @individual;
852: # Drop the ones we don't want
853: if ($#newindividual>=$n) {
854: if ($high) {
855: splice(@newindividual,$#newindividual+1-$n,$n);
856: } else {
857: splice(@newindividual,0,$n);
858: }
859: } else {
860: @newindividual=();
861: }
862: # Re-calculate how many points possible and achieved
863: my $newpossible=0;
864: my $newcorrect=0;
865: for my $score (@newindividual) {
866: my ($thispossible,$thiscorrect)=(split(/\:/,$score));
867: $newpossible+=$thispossible;
868: $newcorrect+=$thiscorrect;
869: }
870: return ($newpossible,$newcorrect,@newindividual);
871: }
872: #
873: # Bottom line with grades
874: #
875:
876: sub bottom_line_category {
877: my ($r,$cangrade,$perc)=@_;
878: $r->print(&Apache::loncommon::start_data_table_row());
879: if ($cangrade) {
880: $r->print('<td colspan="3"><a href="javascript:storecmd(\'createnewcat\');">'.&mt('Create New Category').'</a></td>');
881: }
882: $r->print('<td colspan="6"><b>'.&mt('Total: [_1] percent',&numberout($perc)).'</b></td>');
883: }
884:
885: sub numberout {
886: my ($number)=@_;
887: my $printout=sprintf("%.3f", $number);
888: $printout=~s/0+$//;
889: $printout=~s/\.$//;
890: return $printout;
891: }
892: #
893: # Make one new category
894: #
895:
896: sub make_new_category {
897: my ($r,$cangrade,$ordernum,%categories)=@_;
898: unless ($cangrade) { return %categories; }
899: # Generate new ID
900: my $id=time.'_'.$$.'_'.rand(10000);
901: # Add new ID to list of all IDs ever created in this course
902: $categories{'all'}.=','.$id;
903: $categories{'all'}=~s/^\,//;
904: # Add new ID to ordered list of displayed and evaluated categories
905: $categories{'order'}.=','.$id;
906: $categories{'order'}=~s/^\,//;
907: # Move it into desired space
908: if (defined($ordernum)) {
909: %categories=&move_category($id,$cangrade,$ordernum,%categories);
910: }
911: $categories{$id.'_weight'}=0;
912: $categories{$id.'_totaltype'}='default';
913: $categories{$id.'_displayachieved'}='percent';
914: return %categories;
915: }
916:
917:
918: # === Calculation Rule Editing
919:
920: sub category_rule_codes {
921: return &Apache::lonlocal::texthash(
922: 'droplowperc' => 'Drop N lowest grade percentage problems/folders',
923: 'drophighperc' => 'Drop N highest grade percentage problems/folderss',
924: 'droplow' => 'Drop N lowest point problems/folders',
925: 'drophigh' => 'Drop N highest point problems/folders',
926: 'capabove' => 'Cap percentage above N percent',
927: 'capbelow' => 'Cap percentage below N percent');
928: }
929:
930: sub pretty_prt_rule {
931: my ($cangrade,$id,$code,$value)=@_;
932: my $cid=$id.'_'.$code;
933: my %lt=&category_rule_codes();
934: my $ret='<span class="LC_nobreak">';
935: if ($cangrade) {
936: $ret.='<select name="sel_'.$cid.'">';
937: foreach my $calc (''=>'',sort(keys(%lt))) {
938: $ret.='<option value="'.$calc.'"'.($calc eq $code?' selected="selected"':'').' />'.$lt{$calc}.'</input>';
939: }
940: $ret.='</select> N=<input type="text" size="5" name="val_'.$cid.'" value="'.$value.'" /></span>';
941: } else {
942: $ret.=$lt{$code}.'; N='.$value;
943: }
944: $ret.='</span>';
945: return $ret;
946: }
947:
948: sub new_calc_rule_form {
949: my ($id)=@_;
950: return '<a href="javascript:storecmd(\'newrule_'.$id.'\');">'.&mt('New Calculation Rule').'</a>';
951: }
952:
953: #
954: # Add a calculation rule
955: #
956:
957: sub add_calculation_rule {
958: my ($id,$cangrade,$newcontent,%categories)=@_;
959: unless ($cangrade) { return %categories; }
960: my %newcontent=($newcontent => 1);
961: foreach my $current (split(/\,/,$categories{$id.'_calculations'})) {
962: $newcontent{$current}=1;
963: }
964: $categories{$id.'_calculations'}=join(',',sort(keys(%newcontent)));
965: return %categories;
966: }
967:
968: #
969: # Delete a calculation rule
970: #
971:
972: sub del_calculation_rule {
973: my ($id,$cangrade,$delcontent,%categories)=@_;
974: unless ($cangrade) { return %categories; }
975: my @newcontent=();
976: foreach my $current (split(/\,/,$categories{$id.'_calculations'})) {
977: unless ($current=~/^\Q$delcontent\E\:/) {
978: push(@newcontent,$current);
979: }
980: }
981: $categories{$id.'_calculations'}=join(',',@newcontent);
982: return %categories;
983: }
984:
985: sub set_category_rules {
986: my ($cangrade,$id,%categories)=@_;
987: unless ($cangrade) { return %categories; }
988: my %lt=&category_rule_codes();
989: my @newrules=();
990: foreach my $code ('',(keys(%lt))) {
991: if ($env{'form.sel_'.$id.'_'.$code}) {
992: push(@newrules,$env{'form.sel_'.$id.'_'.$code}.':'.$env{'form.val_'.$id.'_'.$code});
993: }
994: }
995: $categories{$id.'_calculations'}=join(',',sort(@newrules));
996: return %categories;
997: }
998:
999:
1000: # === Category Editing
1001:
1002: #
1003: # Add to category content
1004: #
1005:
1006: sub add_category_content {
1007: my ($id,$cangrade,$newcontent,%categories)=@_;
1008: unless ($cangrade) { return %categories; }
1009: &Apache::lonnet::logthis("In here $newcontent");
1010: my %newcontent=($newcontent => 1);
1011: foreach my $current (split(/\,/,$categories{$id.'_content'})) {
1012: $newcontent{$current}=1;
1013: }
1014: $categories{$id.'_content'}=join(',',sort(keys(%newcontent)));
1015: return %categories;
1016: }
1017:
1018: #
1019: # Delete from category content
1020: #
1021:
1022: sub del_category_content {
1023: my ($id,$cangrade,$delcontent,%categories)=@_;
1024: unless ($cangrade) { return %categories; }
1025: my @newcontent=();
1026: foreach my $current (split(/\,/,$categories{$id.'_content'})) {
1027: unless ($current eq $delcontent) {
1028: push(@newcontent,$current);
1029: }
1030: }
1031: $categories{$id.'_content'}=join(',',@newcontent);
1032: return %categories;
1033: }
1034:
1035: #
1036: # Delete category
1037: #
1038:
1039: sub del_category {
1040: my ($id,$cangrade,%categories)=@_;
1041: unless ($cangrade) { return %categories; }
1042: my @neworder=();
1043: foreach my $currentid (split(/\,/,$categories{'order'})) {
1044: unless ($currentid eq $id) {
1045: push(@neworder,$currentid);
1046: }
1047: }
1048: $categories{'order'}=join(',',@neworder);
1049: return %categories;
1050: }
1051:
1052: #
1053: # Move category up
1054: #
1055:
1056: sub move_up_category {
1057: my ($id,$cangrade,%categories)=@_;
1058: my $currentpos=¤t_pos_category($id,%categories);
1059: if ($currentpos<1) { return %categories; }
1060: return &move_category($id,$cangrade,$currentpos-1,%categories);
1061: }
1062:
1063: #
1064: # Move category down
1065: #
1066:
1067: sub move_down_category {
1068: my ($id,$cangrade,%categories)=@_;
1069: my $currentpos=¤t_pos_category($id,%categories);
1070: my @order=split(/\,/,$categories{'order'});
1071: if ($currentpos>=$#order) { return %categories; }
1072: return &move_category($id,$cangrade,$currentpos+1,%categories);
1073: }
1074:
1075: #
1076: # Move a category to a desired position n the display order
1077: #
1078:
1079: sub move_category {
1080: my ($id,$cangrade,$ordernum,%categories)=@_;
1081: unless ($cangrade) { return %categories; }
1082: my @order=split(/\,/,$categories{'order'});
1083: # Where is the index currently?
1084: my $currentpos=¤t_pos_category($id,%categories);
1085: if (defined($currentpos)) {
1086: if ($currentpos<$ordernum) {
1087: # This is moving to a higher index
1088: # ....X1234....
1089: # ....1234X....
1090: for (my $i=$currentpos;$i<$ordernum;$i++) {
1091: $order[$i]=$order[$i+1];
1092: }
1093: $order[$ordernum]=$id;
1094: }
1095: if ($currentpos>$ordernum) {
1096: # This is moving to a lower index
1097: # ....1234X....
1098: # ....X1234....
1099: for (my $i=$currentpos;$i>$ordernum;$i--) {
1100: $order[$i]=$order[$i-1];
1101: }
1102: $order[$ordernum]=$id;
1103: }
1104: }
1105: $categories{'order'}=join(',',@order);
1106: return %categories;
1107: }
1108:
1109: #
1110: # Find current postion of a category in the order
1111: #
1112:
1113: sub current_pos_category {
1114: my ($id,%categories)=@_;
1115: my @order=split(/\,/,$categories{'order'});
1116: for (my $i=0;$i<=$#order;$i++) {
1117: if ($order[$i] eq $id) { return $i; }
1118: }
1119: # not found
1120: return undef;
1121: }
1122:
1123: #
1124: # Set name of a category
1125: #
1126: sub set_category_name {
1127: my ($cangrade,$id,$name,%categories)=@_;
1128: unless ($cangrade) { return %categories; }
1129: $categories{$id.'_name'}=$name;
1130: return %categories;
1131: }
1132:
1133: #
1134: # Set total of a category
1135: #
1136: sub set_category_total {
1137: my ($cangrade,$id,$totaltype,$total,%categories)=@_;
1138: unless ($cangrade) { return %categories; }
1139: if (($categories{$id.'_total'} eq '') && ($total=~/\d/)) {
1140: $totaltype='typein';
1141: }
1142: $categories{$id.'_totaltype'}=$totaltype;
1143: if ($totaltype eq 'default') {
1144: $categories{$id.'_total'}='';
1145: } else {
1146: $total=~s/\D//gs;
1147: unless ($total) { $total=0; }
1148: $categories{$id.'_total'}=$total;
1149: }
1150: return %categories;
1151: }
1152:
1153: sub set_category_weight {
1154: my ($cangrade,$id,$weight,%categories)=@_;
1155: unless ($cangrade) { return %categories; }
1156: $weight=~s/\D//gs;
1157: unless ($weight) { $weight=0; }
1158: $categories{$id.'_weight'}=$weight;
1159: return %categories;
1160: }
1161:
1162: sub set_category_displayachieved {
1163: my ($cangrade,$id,$value,%categories)=@_;
1164: unless ($cangrade) { return %categories; }
1165: unless (($value eq 'percent') || ($value eq 'points')) { $value='percent'; }
1166: $categories{$id.'_displayachieved'}=$value;
1167: return %categories;
1168: }
1169:
1170:
1171: #
1172: # === end category-related
1173: #
1174: #
1175: # Pass this two refs to arrays for the start and end color, and a number
1176: # from 0 to 1 for how much of the latter you want to mix in. It will
1177: # return a string ready to show ("#FFC309");
1178:
1179: sub mixColors {
1180: my $start = shift;
1181: my $end = shift;
1182: my $ratio = shift;
1183:
1184: my ($a,$b);
1185: my $final = "";
1186: $a = $start->[0]; $b = $end->[0];
1187: my $mix1 = POSIX::floor((1-$ratio)*$a + $ratio*$b);
1188: $a = $start->[1]; $b = $end->[1];
1189: my $mix2 = POSIX::floor((1-$ratio)*$a + $ratio*$b);
1190: $a = $start->[2]; $b = $end->[2];
1191: my $mix3 = POSIX::floor((1-$ratio)*$a + $ratio*$b);
1192:
1193: $final = sprintf "%02x%02x%02x", $mix1, $mix2, $mix3;
1194: return "#" . $final;
1195: }
1196:
1197: 1;
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