1: # The LearningOnline Network with CAPA
2: # Quick Student Grades Display
3: #
4: # $Id: lonquickgrades.pm,v 1.97 2011/06/01 21:32:50 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:
39: sub handler {
40: my $r = shift;
41: return real_handler($r);
42: }
43:
44: sub real_handler {
45: my $r = shift;
46:
47: &Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
48:
49: # Handle header-only request
50: if ($env{'browser.mathml'}) {
51: &Apache::loncommon::content_type($r,'text/xml');
52: } else {
53: &Apache::loncommon::content_type($r,'text/html');
54: }
55: if ($r->header_only) {
56: $r->send_http_header;
57: return OK;
58: }
59:
60: # Send header, don't cache this page
61: &Apache::loncommon::no_cache($r);
62: $r->send_http_header;
63:
64: my $showPoints =
65: (($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'standard')
66: || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'categories'));
67: my $notshowSPRSlink =
68: (($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'external')
69: || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals'));
70: my $notshowTotals=
71: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals';
72: my $showCategories=
73: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'categories';
74:
75:
76: my $title = "Grading and Statistics";#$showPoints ? "Points Display" : "Completed Problems Display";
77: my $brcrum = [{href=>"/adm/quickgrades",text => "Points Display"}];
78: $r->print(&Apache::loncommon::start_page($title,undef,
79: {'bread_crumbs' => $brcrum})
80: );
81:
82: &startGradeScreen($r,'quick');
83:
84: my $cangrade=&Apache::lonnet::allowed('mgr');
85: #
86: # Pick student
87: #
88: my $uname;
89: my $udom;
90: my $stdid;
91: if ($cangrade) {
92: if ($env{'form.uname'}) { $uname=$env{'form.uname'}; }
93: if ($env{'form.udom'}) { $udom=$env{'form.udom'}; }
94: if ($env{'form.id'}) { $stdid=$env{'form.id'}; }
95: if (($stdid) && ($udom)) {
96: $uname=(&Apache::lonnet::idget($udom,$stdid))[1];
97: }
98: if (($stdid) && (!$uname)) {
99: $r->print('<p><span class="LC_warning">'.&mt("Unknown Student/Employee ID: [_1]",$stdid).'</span></p>');
100: $stdid='';
101: }
102: $r->print('<form method="post" name="quickform" action="/adm/quickgrades">');
103: my $chooseopt=&Apache::loncommon::select_dom_form($udom,'udom').' '.
104: &Apache::loncommon::selectstudent_link('quickform','uname','udom');
105: $r->print("<p>\n".&Apache::loncommon::studentbrowser_javascript()."\n");
106: $r->print(&mt('For User [_1] or Student/Employee ID [_2] at Domain [_3]'
107: ,'<input type="text" value="'.$uname.'" size="12" name="uname" />'
108: ,'<input type="text" value="'.$stdid.'" size="12" name="id" /> '
109: ,$chooseopt).'<br />'.
110: '<input type="submit" name="display" value="'.&mt('Update Display').'" /></p>');
111: if (($uname) && ($udom)) {
112: $r->print('<p>'.&mt('Full Name: [_1]',&Apache::loncommon::plainname($uname,$udom)).'</p>');
113: }
114: }
115: $r->rflush();
116:
117: my ($navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted)=
118: &getData($showPoints,$uname,$udom);
119:
120: if ($showCategories) {
121: &outputCategories($r,$showPoints,$notshowTotals,
122: $navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted);
123: } else {
124: &outputTable($r,$showPoints,$notshowTotals,
125: $navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted);
126: }
127: if ($cangrade) { $r->print("\n</form>\n"); }
128: &endGradeScreen($r);
129: return OK;
130:
131: }
132:
133: sub startGradeScreen {
134: my ($r,$mode)=@_;
135:
136: my $showPoints =
137: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'standard';
138: my $notshowSPRSlink =
139: (($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'external')
140: || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals')
141: || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'categories'));
142: my $notshowTotals=
143: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals';
144: my $showCategories=
145: $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'categories';
146:
147: my $allowed_to_view = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
148: my $allowed_to_edit = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
149:
150: if ($allowed_to_view) {
151: my @notes;
152: push(@notes,&mt('Students do not see total points.')) if ($notshowTotals);
153: push(@notes,&mt('Students do not see link to spreadsheet.')) if ($notshowSPRSlink);
154: push(@notes,&mt('Students will see points based on problem weights.')) if ($showPoints);
155: push(@notes,&mt('Students will see points based on categories.')) if ($showCategories);
156: push(@notes, &Apache::lonhtmlcommon::coursepreflink(&mt('Grade display settings'),'grading'));
157: $r->print(&Apache::loncommon::head_subbox(join(' ',@notes)));
158: }
159:
160:
161: $r->print("\n".'<ul class="LC_TabContentBigger" id="main">');
162: $r->print("\n".'<li'.($mode eq 'quick'?' class="active"':'').'><a href="/adm/quickgrades"><b> '.
163: ($showPoints?&mt('Individual Points Overview'):($showCategories?&mt('Grades Overview'):&mt('Completion Overview'))).
164: ' </b></a></li>');
165:
166: if (!($showPoints || $notshowSPRSlink) || ($allowed_to_view)) {
167: $r->print("\n".'<li'.($mode eq 'spreadsheet'?' class="active"':'').'><a href="/adm/'.($allowed_to_view?'classcalc':'studentcalc').'"><b>'.
168: &mt('Spreadsheet (Detailed)').'</b></a></li>');
169: }
170: if ($allowed_to_view) {
171: $r->print("\n".'<li'.($mode eq 'statistics'?' class="active"':'').'><a href="/adm/statistics"><b>'.
172: &mt('Statistics and Reports').'</b></a></li>');
173:
174: $r->print("\n".'<li'.($mode eq 'chart'?' class="active"':'').'><a href="/adm/statistics?reportSelected=student_assessment"><b>'.
175: &mt('Assessment Overview Chart').'</b></a></li>');
176:
177: }
178: if ($allowed_to_edit) {
179: $r->print("\n".'<li'.($mode eq 'grading'?' class="active"':'').'><a href="/adm/grades"><b> '.
180: &mt('Content Grading').' </b></a></li>');
181: if ($env{'form.symb'}) {
182: $r->print("\n".'<li'.($mode eq 'probgrading'?' class="active"':'').'><a href="/adm/grades?symb='.
183: &Apache::lonhtmlcommon::entity_encode($env{'form.symb'}).
184: '&command=gradingmenu"><b> '.
185: &mt('Problem Grading').' </b></a></li>');
186:
187: }
188: }
189: $r->print("\n".'</ul>'."\n");
190: $r->print('<div class="LC_Box" style="clear:both;margin:0;"><div id="maincoursedoc" style="margin:0 0;padding:0 0;"><div class="LC_ContentBox" id="mainCourseDocuments" style="display: block;">');
191: }
192:
193: sub endGradeScreen {
194: my ($r)=@_;
195: $r->print('</div></div></div>'.&Apache::loncommon::end_page());
196: }
197:
198:
199: sub getData {
200:
201: my ($showPoints,$uname,$udom)=@_;
202:
203: # Create the nav map
204: my $navmap = Apache::lonnavmaps::navmap->new($uname,$udom);
205:
206: my $res = $navmap->firstResource(); # temp resource to access constants
207:
208: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
209: my $depth = 1;
210: $iterator->next(); # ignore first BEGIN_MAP
211: my $curRes = $iterator->next();
212:
213: # General overview of the following: Walk along the course resources.
214: # For every problem in the resource, tell its parent maps how many
215: # parts and how many parts correct it has. After that, each map will
216: # have a count of the total parts underneath it, correct and otherwise.
217: # After that, we will walk through the course again and read off
218: # maps in order, with their data.
219: # (If in the future people decide not to be cumulative, only add
220: # the counts to the parent map.)
221: # For convenience, "totalParts" is also "totalPoints" when we're looking
222: # at points; I can't come up with a variable name that makes sense
223: # equally for both cases.
224:
225: my $totalParts = 0; my $totalPossible = 0; my $totalRight = 0;
226: my $totalAttempted = 0;
227: my $now = time();
228: my $topLevelParts = 0; my $topLevelRight = 0; my $topLevelAttempted = 0;
229:
230: # Pre-run: Count parts correct
231: while ( $depth > 0 ) {
232: if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
233: if ($curRes == $iterator->END_MAP()) { $depth--; }
234:
235: if (ref($curRes) && $curRes->is_problem() && !$curRes->randomout)
236: {
237: # Get number of correct, incorrect parts
238: my $parts = $curRes->parts();
239: my $partsRight = 0;
240: my $partsCount = 0;
241: my $partsAttempted = 0;
242: my $stack = $iterator->getStack();
243:
244: for my $part (@{$parts}) {
245: my $completionStatus = $curRes->getCompletionStatus($part);
246: my $dateStatus = $curRes->getDateStatus($part);
247: my $weight = $curRes->weight($part);
248: my $problemstatus = $curRes->problemstatus($part);
249:
250: if ($completionStatus == $curRes->EXCUSED()) {
251: next;
252: }
253: if ($showPoints) {
254: my $score = 0;
255: # If we're not telling status and the answer date isn't passed yet,
256: # it's an "attempted" point
257: if ((($problemstatus eq 'no') ||
258: ($problemstatus eq 'no_feedback_ever')) &&
259: ($dateStatus != $curRes->ANSWER_OPEN)) {
260: my $status = $curRes->simpleStatus($part);
261: if ($status == $curRes->ATTEMPTED) {
262: $partsAttempted += $weight;
263: $totalAttempted += $partsAttempted;
264: }
265: } else {
266: $score = &Apache::grades::compute_points($weight, $curRes->awarded($part));
267: }
268: $partsRight += $score;
269: $totalRight += $score;
270: $partsCount += $weight;
271:
272: $curRes->{DATA}->{PROB_SCORE} += $score;
273: $curRes->{DATA}->{PROB_WEIGHT} += $weight;
274:
275: if ($curRes->opendate($part) < $now) {
276: $totalPossible += $weight;
277: $curRes->{DATA}->{PROB_POSSIBLE} += $weight;
278: }
279: $totalParts += $weight;
280: } else {
281: my $status = $curRes->simpleStatus($part);
282: my $thisright = 0;
283: $partsCount++;
284: if ($status == $curRes->CORRECT ||
285: $status == $curRes->PARTIALLY_CORRECT ) {
286: $partsRight++;
287: $totalRight++;
288: $thisright = 1;
289: }
290:
291: if ($status == $curRes->ATTEMPTED) {
292: $partsAttempted++;
293: $totalAttempted++;
294: }
295:
296: $totalParts++;
297: if ($curRes->opendate($part) < $now) {
298: $totalPossible++;
299: }
300: }
301: }
302:
303: if ($depth == 1) { # in top-level only
304: $topLevelParts += $partsCount;
305: $topLevelRight += $partsRight;
306: $topLevelAttempted += $partsAttempted;
307: }
308:
309: # Crawl down stack and record parts correct and total
310: for my $res (@{$stack}) {
311: if (ref($res) && $res->is_map()) {
312: if (!defined($res->{DATA}->{CHILD_PARTS})) {
313: $res->{DATA}->{CHILD_PARTS} = 0;
314: $res->{DATA}->{CHILD_CORRECT} = 0;
315: $res->{DATA}->{CHILD_ATTEMPTED} = 0;
316: }
317:
318: $res->{DATA}->{CHILD_PARTS} += $partsCount;
319: $res->{DATA}->{CHILD_CORRECT} += $partsRight;
320: $res->{DATA}->{CHILD_ATTEMPTED} += $partsAttempted;
321: }
322: }
323: }
324: $curRes = $iterator->next();
325: }
326: return ($navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted);
327: }
328:
329: #
330: # Outputting everything.
331: #
332:
333: sub outputTable {
334:
335: my ($r,$showPoints,$notshowTotals,
336: $navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted)=@_;
337:
338: my @start = (255, 255, 192);
339: my @end = (0, 192, 0);
340:
341: my $indentString = ' ';
342:
343: # Second pass: Print the maps.
344: $r->print(&Apache::loncommon::start_data_table()
345: .&Apache::loncommon::start_data_table_header_row()
346: .'<th>'.&mt('Folder').'</th>');
347: my $title = &mt($showPoints ? "Points Scored" : "Done");
348: if ($totalAttempted) {
349: $title .= " / " . &mt("Attempted");
350: }
351: $r->print("<th>$title".($notshowTotals?'':" / ".&mt('Total')).'</th>'
352: .&Apache::loncommon::end_data_table_header_row());
353: #
354: # Output of folder scores
355: #
356:
357: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
358: my $depth = 1;
359: $iterator->next(); # ignore first BEGIN_MAP
360: my $curRes = $iterator->next();
361:
362: while ($depth > 0) {
363: if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
364: if ($curRes == $iterator->END_MAP()) { $depth--; }
365:
366: if (ref($curRes) && $curRes->is_map()) {
367: my $title = $curRes->compTitle();
368:
369: my $correct = $curRes->{DATA}->{CHILD_CORRECT};
370: my $total = $curRes->{DATA}->{CHILD_PARTS};
371: my $attempted = $curRes->{DATA}->{CHILD_ATTEMPTED};
372:
373: if ($total > 0) {
374: my $ratio;
375: $ratio = $correct / $total;
376: my $color = &mixColors(\@start, \@end, $ratio);
377: $r->print(&Apache::loncommon::start_data_table_row()
378: .'<td style="background-color:'.$color.';">');
379:
380: my $thisIndent = '';
381: for (my $i = 1; $i < $depth; $i++) { $thisIndent .= $indentString; }
382:
383: $r->print("$thisIndent$title</td>");
384: if ($totalAttempted) {
385: $r->print('<td valign="top">'
386: .$thisIndent
387: .'<span class="LC_nobreak">'
388: .$correct.' / '.$attempted.($notshowTotals?'':' / '.$total)
389: .'</span></td>'
390: .&Apache::loncommon::end_data_table_row()
391: );
392: } else {
393: $r->print('<td valign="top">'
394: .$thisIndent
395: .'<span class="LC_nobreak">'
396: .$correct.($notshowTotals?'':' / '.$total)
397: .'</span></td>'
398: .&Apache::loncommon::end_data_table_row());
399: }
400: }
401: }
402:
403: $curRes = $iterator->next();
404: }
405:
406: # If there were any problems at the top level, print an extra "catchall"
407: if ($topLevelParts > 0) {
408: my $ratio = $topLevelRight / $topLevelParts;
409: my $color = &mixColors(\@start, \@end, $ratio);
410: $r->print(&Apache::loncommon::start_data_table_row()
411: .'<td style="background-color:'.$color.';">');
412: $r->print(&mt("Problems Not Contained In A Folder")."</td><td>");
413: $r->print("$topLevelRight / $topLevelParts</td>"
414: .&Apache::loncommon::end_data_table_row());
415: }
416:
417: #
418: # show totals (if applicable), close table
419: #
420: if ($showPoints) {
421: my $maxHelpLink = &Apache::loncommon::help_open_topic("Quick_Grades_Possibly_Correct");
422:
423: $title = $showPoints ? "Points" : "Parts Done";
424: my $totaltitle = $showPoints ? &mt("Awarded Total Points") : &mt("Total Parts Done");
425: $r->print(&Apache::loncommon::start_data_table_row()
426: .'<td colspan="2" align="right">'.$totaltitle.': <b>'.$totalRight.'</b><br />');
427: $r->print(&mt('Max Possible To Date')." $maxHelpLink: <b>$totalPossible</b><br />");
428: $title = $showPoints ? "Points" : "Parts";
429: $r->print(&mt("Total $title In Course").': <b>'.$totalParts.'</b></td>'
430: .&Apache::loncommon::end_data_table_row());
431: }
432:
433: $r->print(&Apache::loncommon::end_data_table());
434: }
435:
436: #
437: # === Outputting category-based grades.
438: #
439: # $category{'order'}: output order of categories by id
440: # $category{'all'}: complete list of all categories
441: # $category{$id.'_name'}: display-name of category
442: #
443:
444: sub outputCategories {
445:
446: my ($r,$showPoints,$notshowTotals,
447: $navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted)=@_;
448: # Take care of storing and retrieving categories
449:
450: my $cangrade=&Apache::lonnet::allowed('mgr');
451:
452: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
453: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
454: my %categories=();
455: # Loading old categories
456: %categories=&Apache::lonnet::dump('grading_categories',$cdom,$cnum);
457: # Storing
458: if (($cangrade) && (($env{'form.storechanges'}) || ($env{'form.storemove'} ne '') || ($env{'form.cmd'} ne ''))) {
459: # Process the changes
460: %categories=&process_category_edits($r,$cangrade,%categories);
461: # Actually store
462: &Apache::lonnet::put('grading_categories',\%categories,$cdom,$cnum);
463: }
464: # new categories loaded now
465: &output_category_table($r,$cangrade,$navmap,%categories);
466: #
467: if ($cangrade) {
468: $r->print(&Apache::loncommon::resourcebrowser_javascript().
469: '<input type="hidden" name="storemove" value="" />'.
470: '<input type="hidden" name="cmd" value="" />'.
471: '<input type="hidden" name="resourcesymb" value="" />'.
472: '<input type="submit" name="storechanges" value="'.&mt("Save changes to grading categories").'" />'.
473: '<script>function storecmd (cmd) { document.quickform.cmd.value=cmd; document.quickform.submit(); }</script>');
474: }
475: #
476: # Debug
477: #
478: # my %data=&dumpdata($navmap);
479: # foreach (keys(%data)) {
480: # $r->print("\n<br />".$_.'='.$data{$_});
481: # }
482: # my @debugarray=('5:1','4:3','1:1','5:5','6:7');
483: # $r->print("Array: ".join(',',@debugarray).'<br />');
484: # $r->print("0,0,0: ".join(',',&drop(0,0,0,@debugarray)).'<br />');
485: # $r->print("1,0,0: ".join(',',&drop(1,0,0,@debugarray)).'<br />');
486: # $r->print("0,1,0: ".join(',',&drop(0,1,0,@debugarray)).'<br />');
487: # $r->print("1,1,0: ".join(',',&drop(1,1,0,@debugarray)).'<br />');
488: #
489: # $r->print("0,0,2: ".join(',',&drop(0,0,2,@debugarray)).'<br />');
490: # $r->print("1,0,2: ".join(',',&drop(1,0,2,@debugarray)).'<br />');
491: # $r->print("0,1,2: ".join(',',&drop(0,1,2,@debugarray)).'<br />');
492: # $r->print("1,1,2: ".join(',',&drop(1,1,2,@debugarray)).'<br />');
493: #
494: # $r->print("0,0,4: ".join(',',&drop(0,0,4,@debugarray)).'<br />');
495: # $r->print("1,0,4: ".join(',',&drop(1,0,4,@debugarray)).'<br />');
496: # $r->print("0,1,4: ".join(',',&drop(0,1,4,@debugarray)).'<br />');
497: # $r->print("1,1,4: ".join(',',&drop(1,1,4,@debugarray)).'<br />');
498: #
499: # $r->print("0,0,5: ".join(',',&drop(0,0,5,@debugarray)).'<br />');
500: # $r->print("1,0,5: ".join(',',&drop(1,0,5,@debugarray)).'<br />');
501: # $r->print("0,1,5: ".join(',',&drop(0,1,5,@debugarray)).'<br />');
502: # $r->print("1,1,5: ".join(',',&drop(1,1,5,@debugarray)).'<br />');
503: #
504: # $r->print("0,0,7: ".join(',',&drop(0,0,7,@debugarray)).'<br />');
505: # $r->print("1,0,7: ".join(',',&drop(1,0,7,@debugarray)).'<br />');
506: # $r->print("0,1,7: ".join(',',&drop(0,1,7,@debugarray)).'<br />');
507: # $r->print("1,1,7: ".join(',',&drop(1,1,7,@debugarray)).'<br />');
508:
509: }
510:
511: #
512: # Get data for all symbs
513: #
514:
515: sub dumpdata {
516: my ($navmap)=@_;
517: my %returndata=();
518:
519: # Run through the map and get all data
520:
521: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
522: my $depth = 1;
523: $iterator->next(); # ignore first BEGIN_MAP
524: my $curRes = $iterator->next();
525:
526: while ($depth > 0) {
527: if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
528: if ($curRes == $iterator->END_MAP()) { $depth--; }
529: if (ref($curRes)) {
530: if ($curRes->is_map()) {
531: $returndata{$curRes->symb()}='folder:'.$curRes->{DATA}->{CHILD_PARTS}.':'.$curRes->{DATA}->{CHILD_ATTEMPTED}.':'.$curRes->{DATA}->{CHILD_CORRECT};
532: } else {
533: $returndata{$curRes->symb()}='res:'.$curRes->{DATA}->{PROB_WEIGHT}.':'.$curRes->{DATA}->{PROB_POSSIBLE}.':'.$curRes->{DATA}->{PROB_SCORE};
534: }
535: }
536: $curRes = $iterator->next();
537: }
538: return %returndata;
539: }
540:
541: #
542: # Process editing commands, update category hash
543: #
544:
545: sub process_category_edits {
546: my ($r,$cangrade,%categories)=@_;
547: unless ($cangrade) { return %categories; }
548: # First store everything
549: foreach my $id (split(/\,/,$categories{'order'})) {
550: # Set names, types, and weight (there is only one of each per category)
551: %categories=&set_category_name($cangrade,$id,$env{'form.name_'.$id},%categories);
552: %categories=&set_category_total($cangrade,$id,$env{'form.totaltype_'.$id},$env{'form.total_'.$id},%categories);
553: %categories=&set_category_weight($cangrade,$id,$env{'form.weight_'.$id},%categories);
554: %categories=&set_category_displayachieved($cangrade,$id,$env{'form.displayachieved_'.$id},%categories);
555: # Set values for category rules (before names may change)
556: %categories=&set_category_rules($cangrade,$id,%categories);
557: }
558:
559: # Now deal with commands
560: my $cmd=$env{'form.cmd'};
561: if ($cmd eq 'createnewcat') {
562: %categories=&make_new_category($r,$cangrade,undef,%categories);
563: } elsif ($cmd=~/^up\_(.+)$/) {
564: %categories=&move_up_category($1,$cangrade,%categories);
565: } elsif ($cmd=~/^down\_(.+)$/) {
566: %categories=&move_down_category($1,$cangrade,%categories);
567: } elsif ($cmd=~/^delcat\_(.+)$/) {
568: %categories=&del_category($1,$cangrade,%categories);
569: } elsif ($cmd=~/^addcont\_(.+)$/) {
570: %categories=&add_category_content($1,$cangrade,$env{'form.resourcesymb'},%categories);
571: } elsif ($cmd=~/^delcont\_(.+)\_\_\_\_\_\_(.+)$/) {
572: %categories=&del_category_content($1,$cangrade,$2,%categories);
573: } elsif ($cmd=~/^newrule\_(.+)$/) {
574: %categories=&add_calculation_rule($1,$cangrade,':',%categories);
575: } elsif ($cmd=~/^delrule\_(.+)\_\_\_\_\_\_(.*)$/) {
576: %categories=&del_calculation_rule($1,$cangrade,$2,%categories);
577: }
578: # Move to a new position
579: my $moveid=$env{'form.storemove'};
580: if ($moveid) {
581: %categories=&move_category($moveid,$cangrade,$env{'form.newpos_'.$moveid},%categories);
582: }
583: return %categories;
584: }
585:
586: #
587: # Output the table
588: #
589:
590: sub output_category_table {
591: my ($r,$cangrade,$navmaps,%categories)=@_;
592:
593: my $totalweight=0;
594: my $totalpoints=0;
595:
596: $r->print(&Apache::loncommon::start_data_table());
597: #
598: &output_category_table_header($r,$cangrade);
599: #
600: my @order=split(/\,/,$categories{'order'});
601: #
602: my %performance=&dumpdata($navmaps);
603: my $maxpos=$#order;
604: for (my $i=0;$i<=$maxpos;$i++) {
605: my ($correct,$possible,$type,$weight)=&output_and_calc_category($r,$cangrade,$navmaps,$order[$i],$i,$maxpos,\%performance,1,%categories);
606: unless ($possible) { next; }
607: $totalpoints+=$weight*$correct/$possible;
608: $totalweight+=$weight;
609: }
610: #
611: my $perc=0;
612: if ($totalweight) { $perc=100.*$totalpoints/$totalweight; }
613:
614: &bottom_line_category($r,$cangrade,$perc);
615: #
616: $r->print(&Apache::loncommon::end_data_table());
617: return $perc;
618: }
619:
620: sub output_category_table_header {
621: my ($r,$cangrade)=@_;
622: $r->print(&Apache::loncommon::start_data_table_header_row());
623: if ($cangrade) {
624: $r->print('<th colspan="2">'.&mt("Move").'</th><th>'.&mt('Action').'</th>');
625: }
626: $r->print('<th>'.&mt('Category').'</th>'.
627: '<th>'.&mt('Contents').'</th>'.
628: '<th>'.&mt('Total Points').'</th>'.
629: '<th>'.&mt('Calculation').'</th>'.
630: '<th>'.&mt('Relative Weight').'</th>'.
631: '<th>'.&mt('Achieved').'</th>');
632: $r->print(&Apache::loncommon::end_data_table_header_row());
633: }
634:
635:
636: #
637: # Output one category to table
638: #
639:
640: sub output_and_calc_category {
641: my ($r,$cangrade,$navmaps,$id,$currentpos,$maxpos,$performance,$output,%categories)=@_;
642:
643: my $iconpath = &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL') . "/");
644: my %lt=&Apache::lonlocal::texthash(
645: 'up' => 'Move Up',
646: 'dw' => 'Move Down');
647: if ($output) { $r->print("\n".&Apache::loncommon::start_data_table_row()); }
648:
649: if ($output && $cangrade) {
650: $r->print(<<ENDMOVE);
651: <td>
652: <div class="LC_docs_entry_move">
653: <a href='javascript:storecmd("up_$id");'>
654: <img src="${iconpath}move_up.gif" alt='$lt{'up'}' class="LC_icon" />
655: </a>
656: </div>
657: <div class="LC_docs_entry_move">
658: <a href='javascript:storecmd("down_$id");'>
659: <img src="${iconpath}move_down.gif" alt='$lt{'dw'}' class="LC_icon" />
660: </a>
661: </div>
662: </td>
663: ENDMOVE
664: $r->print("\n<td>\n<select name='newpos_$id' onchange='this.form.storemove.value=\"$id\";this.form.submit()'>");
665: for (my $i=0;$i<=$maxpos;$i++) {
666: if ($i==$currentpos) {
667: $r->print('<option value="" selected="selected">('.$i.')</option>');
668: } else {
669: $r->print('<option value="'.$i.'">'.$i.'</option>');
670: }
671: }
672: $r->print("\n</select>\n</td>\n");
673: $r->print('<td><a href="javascript:storecmd(\'delcat_'.$id.'\');">'.&mt('Delete').'</a></td>');
674: $r->print('<td><input type="text" name="name_'.$id.
675: '" value="'.&Apache::lonhtmlcommon::entity_encode($categories{$id.'_name'}).'" /></td>');
676: } elsif ($output) {
677: $r->print('<td>'.$categories{$id.'_name'}.'</td>');
678: }
679: # Content display and summing up of points
680: my $totalpossible=0;
681: my $totalcorrect=0;
682: my @individual=();
683: if ($output) { $r->print('<td><ul>'); }
684: foreach my $contentid (split(/\,/,$categories{$id.'_content'})) {
685: my ($type,$possible,$attempted,$correct)=split(/\:/,$$performance{$contentid});
686: $totalpossible+=$possible;
687: $totalcorrect+=$correct;
688: if ($possible>0) { push(@individual,"$possible:$correct"); }
689: if ($output) {
690: $r->print('<li>');
691: $r->print(&Apache::lonnet::gettitle($contentid).' ('.&numberout($correct).'/'.&numberout($possible).')');
692: if ($cangrade) {
693: $r->print(' <a href="javascript:storecmd(\'delcont_'.$id.'______'.$contentid.'\');">'.&mt('Delete').'</a>');
694: }
695: $r->print('</li>');
696: }
697: }
698: if ($output) {
699: $r->print('</ul>');
700: if ($cangrade) {
701: $r->print('<br />'.&Apache::loncommon::selectresource_link('quickform','addcont_'.$id,&mt('Add Problem or Folder')).'<br />');
702: }
703: $r->print('<p><b>'.&mt('Total raw points: [_1]/[_2]',&numberout($totalcorrect),&numberout($totalpossible)).'</b></p>');
704: $r->print('</td>');
705: }
706: # Total
707: if ($output) { $r->print('<td>'); }
708: if ($cangrade) {
709: if ($output) {
710: $r->print(
711: '<select name="totaltype_'.$id.'">'.
712: '<option value="default"'.($categories{$id.'_totaltype'} eq 'default'?' selected="selected"':'').'>'.&mt('default').'</option>'.
713: '<option value="typein"'.($categories{$id.'_totaltype'} eq 'typein'?' selected="selected"':'').'>'.&mt('Type-in value').'</option>'.
714: '</select>'.
715: '<input type="text" size="4" name="total_'.$id.
716: '" value="'.&Apache::lonhtmlcommon::entity_encode($categories{$id.'_total'}).'" />');
717: }
718: } else {
719: if ($output) {
720: $r->print('<td>'.($categories{$id.'_totaltype'} eq 'default'?&mt('default'):$categories{$id.'_total'}));
721: }
722: }
723: # Adjust total points
724: if ($categories{$id.'_totaltype'} eq 'typein') {
725: $totalpossible=1.*$categories{$id.'_total'};
726: }
727: if ($output) {
728: $r->print('<p><b>'.&mt('Adjusted raw points: [_1]/[_2]',&numberout($totalcorrect),&numberout($totalpossible)).'</b></p>');
729: }
730:
731:
732: # Calculation
733: if ($output) { $r->print('<td><ul>'); }
734: foreach my $calcrule (split(/\,/,$categories{$id.'_calculations'})) {
735: if ($output) { $r->print('<li>'); }
736: my ($code,$value)=split(/\:/,$calcrule);
737: if ($output) { $r->print(&pretty_prt_rule($cangrade,$id,$code,$value)); }
738: if ($cangrade) {
739: if ($output) { $r->print(' <a href="javascript:storecmd(\'delrule_'.$id.'______'.$code.'\');">'.&mt('Delete').'</a>'); }
740: }
741: if ($code eq 'capabove') {
742: if ($totalpossible>0) {
743: if ($totalcorrect/$totalpossible>$value/100.) {
744: $totalcorrect=$totalpossible*$value/100.;
745: }
746: }
747: } elsif ($code eq 'capbelow') {
748: if ($totalpossible>0) {
749: if ($totalcorrect/$totalpossible<$value/100.) {
750: $totalcorrect=$totalpossible*$value/100.;
751: }
752: }
753: } elsif ($code eq 'droplow') {
754: ($totalpossible,$totalcorrect,@individual)=&drop(0,0,$value,@individual);
755: } elsif ($code eq 'drophigh') {
756: ($totalpossible,$totalcorrect,@individual)=&drop(1,0,$value,@individual);
757: } elsif ($code eq 'droplowperc') {
758: ($totalpossible,$totalcorrect,@individual)=&drop(0,1,$value,@individual);
759: } elsif ($code eq 'drophighperc') {
760: ($totalpossible,$totalcorrect,@individual)=&drop(1,1,$value,@individual);
761: }
762: if ($output) { $r->print('</li>'); }
763: }
764: # Re-adjust total points if force total
765: if ($categories{$id.'_totaltype'} eq 'typein') {
766: $totalpossible=1.*$categories{$id.'_total'};
767: }
768:
769: if ($output) {
770: $r->print('</ul>');
771: if ($cangrade) { $r->print('<br />'.&new_calc_rule_form($id)); }
772: $r->print('<p><b>'.&mt('Calculated points: [_1]/[_2]',&numberout($totalcorrect),&numberout($totalpossible)).'</b></p>');
773: $r->print('</td>');
774: }
775: #
776: # Prepare for export
777: #
778: # Weight
779: my $weight=$categories{$id.'_weight'};
780: unless (1.*$weight>0) { $weight=0; }
781: if ($cangrade) {
782: if ($output) {
783: $r->print('<td>'.
784: '<input type="text" size="4" name="weight_'.$id.
785: '" value="'.&Apache::lonhtmlcommon::entity_encode($weight).'" /></td>');
786: }
787: } else {
788: if ($output) {
789: $r->print('<td>'.$weight.'</td>');
790: }
791: }
792: # Achieved
793: my $type=$categories{$id.'_displayachieved'};
794: unless (($type eq 'percent') || ($type eq 'points')) { $type='points'; }
795: if ($output) { $r->print('<td>'); }
796: if ($cangrade) {
797: if ($output) {
798: $r->print('<select name="displayachieved_'.$id.'">'.
799: '<option value="percent"'.($type eq 'percent'?' selected="selected"':'').'>'.&mt('percent').'</option>'.
800: '<option value="points"'.($type eq 'points'?' selected="selected"':'').'>'.&mt('points').'</option>'.
801: '</select>');
802: }
803: }
804: if ($output) {
805: $r->print('<p><b>');
806: if ($type eq 'percent') {
807: my $perc='---';
808: if ($totalpossible) {
809: $perc=100.*$totalcorrect/$totalpossible;
810: }
811: $r->print(&mt('[_1] percent',&numberout($perc)));
812: } else {
813: $r->print(&mt('[_1]/[_2] points',&numberout($totalcorrect),&numberout($totalpossible)));
814: }
815: $r->print('</b></p>');
816: }
817: if ($output) { $r->print('</td>'); }
818:
819: return ($totalcorrect,$totalpossible,$type,$weight);
820: }
821:
822: #
823: # Drop folders and problems
824: #
825:
826: sub drop {
827: my ($high,$percent,$n,@individual)=@_;
828: # Sort assignments by points or percent
829: my @newindividual=sort {
830: my ($pa,$ca)=split(/\:/,$a);
831: my ($pb,$cb)=split(/\:/,$b);
832: if ($percent) {
833: my $perca=0;
834: if ($pa>0) { $perca=$ca/$pa; }
835: my $percb=0;
836: if ($pb>0) { $percb=$cb/$pb; }
837: $perca<=>$percb;
838: } else {
839: $ca<=>$cb;
840: }
841: } @individual;
842: # Drop the ones we don't want
843: if ($#newindividual>=$n) {
844: if ($high) {
845: splice(@newindividual,$#newindividual+1-$n,$n);
846: } else {
847: splice(@newindividual,0,$n);
848: }
849: } else {
850: @newindividual=();
851: }
852: # Re-calculate how many points possible and achieved
853: my $newpossible=0;
854: my $newcorrect=0;
855: for my $score (@newindividual) {
856: my ($thispossible,$thiscorrect)=(split(/\:/,$score));
857: $newpossible+=$thispossible;
858: $newcorrect+=$thiscorrect;
859: }
860: return ($newpossible,$newcorrect,@newindividual);
861: }
862: #
863: # Bottom line with grades
864: #
865:
866: sub bottom_line_category {
867: my ($r,$cangrade,$perc)=@_;
868: $r->print(&Apache::loncommon::start_data_table_row());
869: if ($cangrade) {
870: $r->print('<td colspan="3"><a href="javascript:storecmd(\'createnewcat\');">'.&mt('Create New Category').'</a></td>');
871: }
872: $r->print('<td colspan="6"><b>'.&mt('Total: [_1] percent',&numberout($perc)).'</b></td>');
873: }
874:
875: sub numberout {
876: my ($number)=@_;
877: my $printout=sprintf("%.3f", $number);
878: $printout=~s/0+$//;
879: $printout=~s/\.$//;
880: return $printout;
881: }
882: #
883: # Make one new category
884: #
885:
886: sub make_new_category {
887: my ($r,$cangrade,$ordernum,%categories)=@_;
888: unless ($cangrade) { return %categories; }
889: # Generate new ID
890: my $id=time.'_'.$$.'_'.rand(10000);
891: # Add new ID to list of all IDs ever created in this course
892: $categories{'all'}.=','.$id;
893: $categories{'all'}=~s/^\,//;
894: # Add new ID to ordered list of displayed and evaluated categories
895: $categories{'order'}.=','.$id;
896: $categories{'order'}=~s/^\,//;
897: # Move it into desired space
898: if (defined($ordernum)) {
899: %categories=&move_category($id,$cangrade,$ordernum,%categories);
900: }
901: $categories{$id.'_weight'}=0;
902: $categories{$id.'_totaltype'}='default';
903: $categories{$id.'_displayachieved'}='percent';
904: return %categories;
905: }
906:
907:
908: # === Calculation Rule Editing
909:
910: sub category_rule_codes {
911: return &Apache::lonlocal::texthash(
912: 'droplowperc' => 'Drop N lowest grade percentage problems/folders',
913: 'drophighperc' => 'Drop N highest grade percentage problems/folderss',
914: 'droplow' => 'Drop N lowest point problems/folders',
915: 'drophigh' => 'Drop N highest point problems/folders',
916: 'capabove' => 'Cap percentage above N percent',
917: 'capbelow' => 'Cap percentage below N percent');
918: }
919:
920: sub pretty_prt_rule {
921: my ($cangrade,$id,$code,$value)=@_;
922: my $cid=$id.'_'.$code;
923: my %lt=&category_rule_codes();
924: my $ret='<span class="LC_nobreak">';
925: if ($cangrade) {
926: $ret.='<select name="sel_'.$cid.'">';
927: foreach my $calc (''=>'',sort(keys(%lt))) {
928: $ret.='<option value="'.$calc.'"'.($calc eq $code?' selected="selected"':'').' />'.$lt{$calc}.'</input>';
929: }
930: $ret.='</select> N=<input type="text" size="5" name="val_'.$cid.'" value="'.$value.'" /></span>';
931: } else {
932: $ret.=$lt{$code}.'; N='.$value;
933: }
934: $ret.='</span>';
935: return $ret;
936: }
937:
938: sub new_calc_rule_form {
939: my ($id)=@_;
940: return '<a href="javascript:storecmd(\'newrule_'.$id.'\');">'.&mt('New Calculation Rule').'</a>';
941: }
942:
943: #
944: # Add a calculation rule
945: #
946:
947: sub add_calculation_rule {
948: my ($id,$cangrade,$newcontent,%categories)=@_;
949: unless ($cangrade) { return %categories; }
950: my %newcontent=($newcontent => 1);
951: foreach my $current (split(/\,/,$categories{$id.'_calculations'})) {
952: $newcontent{$current}=1;
953: }
954: $categories{$id.'_calculations'}=join(',',sort(keys(%newcontent)));
955: return %categories;
956: }
957:
958: #
959: # Delete a calculation rule
960: #
961:
962: sub del_calculation_rule {
963: my ($id,$cangrade,$delcontent,%categories)=@_;
964: unless ($cangrade) { return %categories; }
965: my @newcontent=();
966: foreach my $current (split(/\,/,$categories{$id.'_calculations'})) {
967: unless ($current=~/^\Q$delcontent\E\:/) {
968: push(@newcontent,$current);
969: }
970: }
971: $categories{$id.'_calculations'}=join(',',@newcontent);
972: return %categories;
973: }
974:
975: sub set_category_rules {
976: my ($cangrade,$id,%categories)=@_;
977: unless ($cangrade) { return %categories; }
978: my %lt=&category_rule_codes();
979: my @newrules=();
980: foreach my $code ('',(keys(%lt))) {
981: if ($env{'form.sel_'.$id.'_'.$code}) {
982: push(@newrules,$env{'form.sel_'.$id.'_'.$code}.':'.$env{'form.val_'.$id.'_'.$code});
983: }
984: }
985: $categories{$id.'_calculations'}=join(',',sort(@newrules));
986: return %categories;
987: }
988:
989:
990: # === Category Editing
991:
992: #
993: # Add to category content
994: #
995:
996: sub add_category_content {
997: my ($id,$cangrade,$newcontent,%categories)=@_;
998: unless ($cangrade) { return %categories; }
999: &Apache::lonnet::logthis("In here $newcontent");
1000: my %newcontent=($newcontent => 1);
1001: foreach my $current (split(/\,/,$categories{$id.'_content'})) {
1002: $newcontent{$current}=1;
1003: }
1004: $categories{$id.'_content'}=join(',',sort(keys(%newcontent)));
1005: return %categories;
1006: }
1007:
1008: #
1009: # Delete from category content
1010: #
1011:
1012: sub del_category_content {
1013: my ($id,$cangrade,$delcontent,%categories)=@_;
1014: unless ($cangrade) { return %categories; }
1015: my @newcontent=();
1016: foreach my $current (split(/\,/,$categories{$id.'_content'})) {
1017: unless ($current eq $delcontent) {
1018: push(@newcontent,$current);
1019: }
1020: }
1021: $categories{$id.'_content'}=join(',',@newcontent);
1022: return %categories;
1023: }
1024:
1025: #
1026: # Delete category
1027: #
1028:
1029: sub del_category {
1030: my ($id,$cangrade,%categories)=@_;
1031: unless ($cangrade) { return %categories; }
1032: my @neworder=();
1033: foreach my $currentid (split(/\,/,$categories{'order'})) {
1034: unless ($currentid eq $id) {
1035: push(@neworder,$currentid);
1036: }
1037: }
1038: $categories{'order'}=join(',',@neworder);
1039: return %categories;
1040: }
1041:
1042: #
1043: # Move category up
1044: #
1045:
1046: sub move_up_category {
1047: my ($id,$cangrade,%categories)=@_;
1048: my $currentpos=¤t_pos_category($id,%categories);
1049: if ($currentpos<1) { return %categories; }
1050: return &move_category($id,$cangrade,$currentpos-1,%categories);
1051: }
1052:
1053: #
1054: # Move category down
1055: #
1056:
1057: sub move_down_category {
1058: my ($id,$cangrade,%categories)=@_;
1059: my $currentpos=¤t_pos_category($id,%categories);
1060: my @order=split(/\,/,$categories{'order'});
1061: if ($currentpos>=$#order) { return %categories; }
1062: return &move_category($id,$cangrade,$currentpos+1,%categories);
1063: }
1064:
1065: #
1066: # Move a category to a desired position n the display order
1067: #
1068:
1069: sub move_category {
1070: my ($id,$cangrade,$ordernum,%categories)=@_;
1071: unless ($cangrade) { return %categories; }
1072: my @order=split(/\,/,$categories{'order'});
1073: # Where is the index currently?
1074: my $currentpos=¤t_pos_category($id,%categories);
1075: if (defined($currentpos)) {
1076: if ($currentpos<$ordernum) {
1077: # This is moving to a higher index
1078: # ....X1234....
1079: # ....1234X....
1080: for (my $i=$currentpos;$i<$ordernum;$i++) {
1081: $order[$i]=$order[$i+1];
1082: }
1083: $order[$ordernum]=$id;
1084: }
1085: if ($currentpos>$ordernum) {
1086: # This is moving to a lower index
1087: # ....1234X....
1088: # ....X1234....
1089: for (my $i=$currentpos;$i>$ordernum;$i--) {
1090: $order[$i]=$order[$i-1];
1091: }
1092: $order[$ordernum]=$id;
1093: }
1094: }
1095: $categories{'order'}=join(',',@order);
1096: return %categories;
1097: }
1098:
1099: #
1100: # Find current postion of a category in the order
1101: #
1102:
1103: sub current_pos_category {
1104: my ($id,%categories)=@_;
1105: my @order=split(/\,/,$categories{'order'});
1106: for (my $i=0;$i<=$#order;$i++) {
1107: if ($order[$i] eq $id) { return $i; }
1108: }
1109: # not found
1110: return undef;
1111: }
1112:
1113: #
1114: # Set name of a category
1115: #
1116: sub set_category_name {
1117: my ($cangrade,$id,$name,%categories)=@_;
1118: unless ($cangrade) { return %categories; }
1119: $categories{$id.'_name'}=$name;
1120: return %categories;
1121: }
1122:
1123: #
1124: # Set total of a category
1125: #
1126: sub set_category_total {
1127: my ($cangrade,$id,$totaltype,$total,%categories)=@_;
1128: unless ($cangrade) { return %categories; }
1129: if (($categories{$id.'_total'} eq '') && ($total=~/\d/)) {
1130: $totaltype='typein';
1131: }
1132: $categories{$id.'_totaltype'}=$totaltype;
1133: if ($totaltype eq 'default') {
1134: $categories{$id.'_total'}='';
1135: } else {
1136: $total=~s/\D//gs;
1137: unless ($total) { $total=0; }
1138: $categories{$id.'_total'}=$total;
1139: }
1140: return %categories;
1141: }
1142:
1143: sub set_category_weight {
1144: my ($cangrade,$id,$weight,%categories)=@_;
1145: unless ($cangrade) { return %categories; }
1146: $weight=~s/\D//gs;
1147: unless ($weight) { $weight=0; }
1148: $categories{$id.'_weight'}=$weight;
1149: return %categories;
1150: }
1151:
1152: sub set_category_displayachieved {
1153: my ($cangrade,$id,$value,%categories)=@_;
1154: unless ($cangrade) { return %categories; }
1155: unless (($value eq 'percent') || ($value eq 'points')) { $value='percent'; }
1156: $categories{$id.'_displayachieved'}=$value;
1157: return %categories;
1158: }
1159:
1160:
1161: #
1162: # === end category-related
1163: #
1164: #
1165: # Pass this two refs to arrays for the start and end color, and a number
1166: # from 0 to 1 for how much of the latter you want to mix in. It will
1167: # return a string ready to show ("#FFC309");
1168:
1169: sub mixColors {
1170: my $start = shift;
1171: my $end = shift;
1172: my $ratio = shift;
1173:
1174: my ($a,$b);
1175: my $final = "";
1176: $a = $start->[0]; $b = $end->[0];
1177: my $mix1 = POSIX::floor((1-$ratio)*$a + $ratio*$b);
1178: $a = $start->[1]; $b = $end->[1];
1179: my $mix2 = POSIX::floor((1-$ratio)*$a + $ratio*$b);
1180: $a = $start->[2]; $b = $end->[2];
1181: my $mix3 = POSIX::floor((1-$ratio)*$a + $ratio*$b);
1182:
1183: $final = sprintf "%02x%02x%02x", $mix1, $mix2, $mix3;
1184: return "#" . $final;
1185: }
1186:
1187: 1;
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