Add a sparkline/bar display for score history.
authorSteinar H. Gunderson <sgunderson@bigfoot.com>
Sat, 20 Jun 2015 21:18:48 +0000 (23:18 +0200)
committerSteinar H. Gunderson <sgunderson@bigfoot.com>
Sat, 20 Jun 2015 21:18:48 +0000 (23:18 +0200)
build.sh
remoteglot.pl
www/css/remoteglot.css
www/index.html
www/js/jquery.sparkline.js [new file with mode: 0644]
www/js/remoteglot.js

index b8da89e..9831f35 100755 (executable)
--- a/build.sh
+++ b/build.sh
@@ -17,5 +17,6 @@ java -jar closure/compiler.jar \
        www/js/chessboard-0.3.0.js \
        www/js/chess.js \
        www/js/json_delta.js \
        www/js/chessboard-0.3.0.js \
        www/js/chess.js \
        www/js/json_delta.js \
+       www/js/jquery.sparkline.js \
        www/js/remoteglot.js
 
        www/js/remoteglot.js
 
index 3c12569..d6ecbcb 100755 (executable)
@@ -40,7 +40,10 @@ my $last_written_json = undef;
 
 # Persisted so that we can restart.
 tie my %clock_info_for_pos, 'Tie::Persistent', 'clock_info.db', 'rw';
 
 # Persisted so that we can restart.
 tie my %clock_info_for_pos, 'Tie::Persistent', 'clock_info.db', 'rw';
-(tied %clock_info_for_pos)->autosync(1);       # turn on write back on every modify
+(tied %clock_info_for_pos)->autosync(1);
+
+tie my %json_for_pos, 'Tie::Persistent', 'analysis_info.db', 'rw';
+(tied %json_for_pos)->autosync(1);
 
 $| = 1;
 
 
 $| = 1;
 
@@ -737,6 +740,7 @@ sub output_json {
        $json->{'id'} = $engine->{'id'};
        $json->{'score'} = long_score($info, $pos_calculating, '');
        $json->{'short_score'} = short_score($info, $pos_calculating, '');
        $json->{'id'} = $engine->{'id'};
        $json->{'score'} = long_score($info, $pos_calculating, '');
        $json->{'short_score'} = short_score($info, $pos_calculating, '');
+       $json->{'plot_score'} = plot_score($info, $pos_calculating, '');
 
        $json->{'nodes'} = $info->{'nodes'};
        $json->{'nps'} = $info->{'nps'};
 
        $json->{'nodes'} = $info->{'nodes'};
        $json->{'nps'} = $info->{'nps'};
@@ -774,6 +778,46 @@ sub output_json {
        }
        $json->{'refutation_lines'} = \%refutation_lines;
 
        }
        $json->{'refutation_lines'} = \%refutation_lines;
 
+       # Piece together historic score information, to the degree we have it.
+       if (!$historic_json_only && exists($pos_calculating->{'pretty_history'})) {
+               my %score_history = ();
+
+               my $pos = Position->start_pos('white', 'black');
+               my $halfmove_num = 0;
+               for my $move (@{$pos_calculating->{'pretty_history'}}) {
+                       my $id = id_for_pos($pos, $halfmove_num);
+                       if (exists($json_for_pos{$id}) && defined($json_for_pos{$id}->{'plot_score'})) {
+                               $score_history{$halfmove_num} = [
+                                       $json_for_pos{$id}->{'plot_score'},
+                                       $json_for_pos{$id}->{'short_score'}
+                               ];
+                       }
+                       ++$halfmove_num;
+                       ($pos) = $pos->make_pretty_move($move);
+               }
+
+               # If at any point we are missing 10 consecutive moves,
+               # truncate the history there. This is so we don't get into
+               # a situation where we e.g. start analyzing at move 45,
+               # but we have analysis for 1. e4 from some completely different game
+               # and thus show a huge hole.
+               my $consecutive_missing = 0;
+               my $truncate_until = 0;
+               for (my $i = $halfmove_num; $i --> 0; ) {
+                       if ($consecutive_missing >= 10) {
+                               delete $score_history{$i};
+                               next;
+                       }
+                       if (exists($score_history{$i})) {
+                               $consecutive_missing = 0;
+                       } else {
+                               ++$consecutive_missing;
+                       }
+               }
+
+               $json->{'score_history'} = \%score_history;
+       }
+
        my $json_enc = JSON::XS->new;
        $json_enc->canonical(1);
        my $encoded = $json_enc->encode($json);
        my $json_enc = JSON::XS->new;
        $json_enc->canonical(1);
        my $encoded = $json_enc->encode($json);
@@ -785,7 +829,8 @@ sub output_json {
 
        if (exists($pos_calculating->{'pretty_history'}) &&
            defined($remoteglotconf::json_history_dir)) {
 
        if (exists($pos_calculating->{'pretty_history'}) &&
            defined($remoteglotconf::json_history_dir)) {
-               my $filename = $remoteglotconf::json_history_dir . "/" . id_for_pos($pos_calculating) . ".json";
+               my $id = id_for_pos($pos_calculating);
+               my $filename = $remoteglotconf::json_history_dir . "/" . $id . ".json";
 
                # Overwrite old analysis (assuming it exists at all) if we're
                # using a different engine, or if we've calculated deeper.
 
                # Overwrite old analysis (assuming it exists at all) if we're
                # using a different engine, or if we've calculated deeper.
@@ -799,6 +844,7 @@ sub output_json {
                    $new_depth > $old_depth ||
                    ($new_depth == $old_depth && $new_nodes >= $old_nodes)) {
                        atomic_set_contents($filename, $encoded);
                    $new_depth > $old_depth ||
                    ($new_depth == $old_depth && $new_nodes >= $old_nodes)) {
                        atomic_set_contents($filename, $encoded);
+                       $json_for_pos{$id} = $json;
                }
        }
 }
                }
        }
 }
@@ -814,9 +860,9 @@ sub atomic_set_contents {
 }
 
 sub id_for_pos {
 }
 
 sub id_for_pos {
-       my $pos = shift;
+       my ($pos, $halfmove_num) = @_;
 
 
-       my $halfmove_num = scalar @{$pos->{'pretty_history'}};
+       $halfmove_num //= scalar @{$pos->{'pretty_history'}};
        (my $fen = $pos->fen()) =~ tr,/ ,-_,;
        return "move$halfmove_num-$fen";
 }
        (my $fen = $pos->fen()) =~ tr,/ ,-_,;
        return "move$halfmove_num-$fen";
 }
@@ -942,6 +988,36 @@ sub long_score {
        return undef;
 }
 
        return undef;
 }
 
+# For graphs; a single number in centipawns, capped at +/- 500.
+sub plot_score {
+       my ($info, $pos, $mpv) = @_;
+
+       my $invert = ($pos->{'toplay'} eq 'B');
+       if (defined($info->{'score_mate' . $mpv})) {
+               my $mate = $info->{'score_mate' . $mpv};
+               if ($invert) {
+                       $mate = -$mate;
+               }
+               if ($mate > 0) {
+                       return 500;
+               } else {
+                       return -500;
+               }
+       } else {
+               if (exists($info->{'score_cp' . $mpv})) {
+                       my $score = $info->{'score_cp' . $mpv};
+                       if ($invert) {
+                               $score = -$score;
+                       }
+                       $score = 500 if ($score > 500);
+                       $score = -500 if ($score < -500);
+                       return int($score);
+               }
+       }
+
+       return undef;
+}
+
 my %book_cache = ();
 sub book_info {
        my ($fen, $board, $toplay) = @_;
 my %book_cache = ();
 sub book_info {
        my ($fen, $board, $toplay) = @_;
index 0931e9a..2be9840 100644 (file)
@@ -5,10 +5,23 @@ h3 {
        margin-top: 1em;
        margin-bottom: 0;
 }
        margin-top: 1em;
        margin-bottom: 0;
 }
-#score {
+#scorecontainer {
        font-size: x-large;
        margin-top: 0;
 }
        font-size: x-large;
        margin-top: 0;
 }
+#score {
+       float: left;
+}
+#scoresparkcontainer {
+       overflow: hidden;
+}
+#scorespark {
+       margin-left: 0.5em;
+       margin-right: 0.5em;
+}
+#pvcontainer {
+       clear: left;
+}
 .window {
        position: absolute;    
        width: 0px;
 .window {
        position: absolute;    
        width: 0px;
index 19da00c..8f991bb 100644 (file)
   </div>
 </div>
 <div id="analysis">
   </div>
 </div>
 <div id="analysis">
-  <p id="score">Score:</p>
-  <p><strong>PV:</strong> <span id="pv"></span></p>
+  <div id="scorecontainer">
+    <span id="score">Score:</span>
+    <div id="scoresparkcontainer">
+      <span id="scorespark"></span>
+    </div>
+  </div>
+  <p id="pvcontainer"><strong>PV:</strong> <span id="pv"></span></p>
   <p id="searchstats"></p>
   <h3>History and potential moves (multi-PV)</h3>
   <p id="sortbyscoreholder">
   <p id="searchstats"></p>
   <h3>History and potential moves (multi-PV)</h3>
   <p id="sortbyscoreholder">
@@ -77,6 +82,7 @@
 <script type="text/javascript" src="js/chessboard-0.3.0.min.js"></script>
 <script type="text/javascript" src="js/chess.min.js"></script>
 <script type="text/javascript" src="js/json_delta.js"></script>
 <script type="text/javascript" src="js/chessboard-0.3.0.min.js"></script>
 <script type="text/javascript" src="js/chess.min.js"></script>
 <script type="text/javascript" src="js/json_delta.js"></script>
+<script type="text/javascript" src="js/jquery.sparkline.js"></script>
 <script type="text/javascript" src="js/remoteglot.js"></script>
 <!--
 -->
 <script type="text/javascript" src="js/remoteglot.js"></script>
 <!--
 -->
diff --git a/www/js/jquery.sparkline.js b/www/js/jquery.sparkline.js
new file mode 100644 (file)
index 0000000..721e03b
--- /dev/null
@@ -0,0 +1,3054 @@
+/**
+*
+* jquery.sparkline.js
+*
+* v2.1.2
+* (c) Splunk, Inc
+* Contact: Gareth Watts (gareth@splunk.com)
+* http://omnipotent.net/jquery.sparkline/
+*
+* Generates inline sparkline charts from data supplied either to the method
+* or inline in HTML
+*
+* Compatible with Internet Explorer 6.0+ and modern browsers equipped with the canvas tag
+* (Firefox 2.0+, Safari, Opera, etc)
+*
+* License: New BSD License
+*
+* Copyright (c) 2012, Splunk Inc.
+* All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+*     * Redistributions of source code must retain the above copyright notice,
+*       this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above copyright notice,
+*       this list of conditions and the following disclaimer in the documentation
+*       and/or other materials provided with the distribution.
+*     * Neither the name of Splunk Inc nor the names of its contributors may
+*       be used to endorse or promote products derived from this software without
+*       specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+* SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*
+*
+* Usage:
+*  $(selector).sparkline(values, options)
+*
+* If values is undefined or set to 'html' then the data values are read from the specified tag:
+*   <p>Sparkline: <span class="sparkline">1,4,6,6,8,5,3,5</span></p>
+*   $('.sparkline').sparkline();
+* There must be no spaces in the enclosed data set
+*
+* Otherwise values must be an array of numbers or null values
+*    <p>Sparkline: <span id="sparkline1">This text replaced if the browser is compatible</span></p>
+*    $('#sparkline1').sparkline([1,4,6,6,8,5,3,5])
+*    $('#sparkline2').sparkline([1,4,6,null,null,5,3,5])
+*
+* Values can also be specified in an HTML comment, or as a values attribute:
+*    <p>Sparkline: <span class="sparkline"><!--1,4,6,6,8,5,3,5 --></span></p>
+*    <p>Sparkline: <span class="sparkline" values="1,4,6,6,8,5,3,5"></span></p>
+*    $('.sparkline').sparkline();
+*
+* For line charts, x values can also be specified:
+*   <p>Sparkline: <span class="sparkline">1:1,2.7:4,3.4:6,5:6,6:8,8.7:5,9:3,10:5</span></p>
+*    $('#sparkline1').sparkline([ [1,1], [2.7,4], [3.4,6], [5,6], [6,8], [8.7,5], [9,3], [10,5] ])
+*
+* By default, options should be passed in as teh second argument to the sparkline function:
+*   $('.sparkline').sparkline([1,2,3,4], {type: 'bar'})
+*
+* Options can also be set by passing them on the tag itself.  This feature is disabled by default though
+* as there's a slight performance overhead:
+*   $('.sparkline').sparkline([1,2,3,4], {enableTagOptions: true})
+*   <p>Sparkline: <span class="sparkline" sparkType="bar" sparkBarColor="red">loading</span></p>
+* Prefix all options supplied as tag attribute with "spark" (configurable by setting tagOptionPrefix)
+*
+* Supported options:
+*   lineColor - Color of the line used for the chart
+*   fillColor - Color used to fill in the chart - Set to '' or false for a transparent chart
+*   width - Width of the chart - Defaults to 3 times the number of values in pixels
+*   height - Height of the chart - Defaults to the height of the containing element
+*   chartRangeMin - Specify the minimum value to use for the Y range of the chart - Defaults to the minimum value supplied
+*   chartRangeMax - Specify the maximum value to use for the Y range of the chart - Defaults to the maximum value supplied
+*   chartRangeClip - Clip out of range values to the max/min specified by chartRangeMin and chartRangeMax
+*   chartRangeMinX - Specify the minimum value to use for the X range of the chart - Defaults to the minimum value supplied
+*   chartRangeMaxX - Specify the maximum value to use for the X range of the chart - Defaults to the maximum value supplied
+*   composite - If true then don't erase any existing chart attached to the tag, but draw
+*           another chart over the top - Note that width and height are ignored if an
+*           existing chart is detected.
+*   tagValuesAttribute - Name of tag attribute to check for data values - Defaults to 'values'
+*   enableTagOptions - Whether to check tags for sparkline options
+*   tagOptionPrefix - Prefix used for options supplied as tag attributes - Defaults to 'spark'
+*   disableHiddenCheck - If set to true, then the plugin will assume that charts will never be drawn into a
+*           hidden dom element, avoding a browser reflow
+*   disableInteraction - If set to true then all mouseover/click interaction behaviour will be disabled,
+*       making the plugin perform much like it did in 1.x
+*   disableTooltips - If set to true then tooltips will be disabled - Defaults to false (tooltips enabled)
+*   disableHighlight - If set to true then highlighting of selected chart elements on mouseover will be disabled
+*       defaults to false (highlights enabled)
+*   highlightLighten - Factor to lighten/darken highlighted chart values by - Defaults to 1.4 for a 40% increase
+*   tooltipContainer - Specify which DOM element the tooltip should be rendered into - defaults to document.body
+*   tooltipClassname - Optional CSS classname to apply to tooltips - If not specified then a default style will be applied
+*   tooltipOffsetX - How many pixels away from the mouse pointer to render the tooltip on the X axis
+*   tooltipOffsetY - How many pixels away from the mouse pointer to render the tooltip on the r axis
+*   tooltipFormatter  - Optional callback that allows you to override the HTML displayed in the tooltip
+*       callback is given arguments of (sparkline, options, fields)
+*   tooltipChartTitle - If specified then the tooltip uses the string specified by this setting as a title
+*   tooltipFormat - A format string or SPFormat object  (or an array thereof for multiple entries)
+*       to control the format of the tooltip
+*   tooltipPrefix - A string to prepend to each field displayed in a tooltip
+*   tooltipSuffix - A string to append to each field displayed in a tooltip
+*   tooltipSkipNull - If true then null values will not have a tooltip displayed (defaults to true)
+*   tooltipValueLookups - An object or range map to map field values to tooltip strings
+*       (eg. to map -1 to "Lost", 0 to "Draw", and 1 to "Win")
+*   numberFormatter - Optional callback for formatting numbers in tooltips
+*   numberDigitGroupSep - Character to use for group separator in numbers "1,234" - Defaults to ","
+*   numberDecimalMark - Character to use for the decimal point when formatting numbers - Defaults to "."
+*   numberDigitGroupCount - Number of digits between group separator - Defaults to 3
+*
+* There are 7 types of sparkline, selected by supplying a "type" option of 'line' (default),
+* 'bar', 'tristate', 'bullet', 'discrete', 'pie' or 'box'
+*    line - Line chart.  Options:
+*       spotColor - Set to '' to not end each line in a circular spot
+*       minSpotColor - If set, color of spot at minimum value
+*       maxSpotColor - If set, color of spot at maximum value
+*       spotRadius - Radius in pixels
+*       lineWidth - Width of line in pixels
+*       normalRangeMin
+*       normalRangeMax - If set draws a filled horizontal bar between these two values marking the "normal"
+*                      or expected range of values
+*       normalRangeColor - Color to use for the above bar
+*       drawNormalOnTop - Draw the normal range above the chart fill color if true
+*       defaultPixelsPerValue - Defaults to 3 pixels of width for each value in the chart
+*       highlightSpotColor - The color to use for drawing a highlight spot on mouseover - Set to null to disable
+*       highlightLineColor - The color to use for drawing a highlight line on mouseover - Set to null to disable
+*       valueSpots - Specify which points to draw spots on, and in which color.  Accepts a range map
+*
+*   bar - Bar chart.  Options:
+*       barColor - Color of bars for postive values
+*       negBarColor - Color of bars for negative values
+*       zeroColor - Color of bars with zero values
+*       nullColor - Color of bars with null values - Defaults to omitting the bar entirely
+*       barWidth - Width of bars in pixels
+*       colorMap - Optional mappnig of values to colors to override the *BarColor values above
+*                  can be an Array of values to control the color of individual bars or a range map
+*                  to specify colors for individual ranges of values
+*       barSpacing - Gap between bars in pixels
+*       zeroAxis - Centers the y-axis around zero if true
+*
+*   tristate - Charts values of win (>0), lose (<0) or draw (=0)
+*       posBarColor - Color of win values
+*       negBarColor - Color of lose values
+*       zeroBarColor - Color of draw values
+*       barWidth - Width of bars in pixels
+*       barSpacing - Gap between bars in pixels
+*       colorMap - Optional mappnig of values to colors to override the *BarColor values above
+*                  can be an Array of values to control the color of individual bars or a range map
+*                  to specify colors for individual ranges of values
+*
+*   discrete - Options:
+*       lineHeight - Height of each line in pixels - Defaults to 30% of the graph height
+*       thesholdValue - Values less than this value will be drawn using thresholdColor instead of lineColor
+*       thresholdColor
+*
+*   bullet - Values for bullet graphs msut be in the order: target, performance, range1, range2, range3, ...
+*       options:
+*       targetColor - The color of the vertical target marker
+*       targetWidth - The width of the target marker in pixels
+*       performanceColor - The color of the performance measure horizontal bar
+*       rangeColors - Colors to use for each qualitative range background color
+*
+*   pie - Pie chart. Options:
+*       sliceColors - An array of colors to use for pie slices
+*       offset - Angle in degrees to offset the first slice - Try -90 or +90
+*       borderWidth - Width of border to draw around the pie chart, in pixels - Defaults to 0 (no border)
+*       borderColor - Color to use for the pie chart border - Defaults to #000
+*
+*   box - Box plot. Options:
+*       raw - Set to true to supply pre-computed plot points as values
+*             values should be: low_outlier, low_whisker, q1, median, q3, high_whisker, high_outlier
+*             When set to false you can supply any number of values and the box plot will
+*             be computed for you.  Default is false.
+*       showOutliers - Set to true (default) to display outliers as circles
+*       outlierIQR - Interquartile range used to determine outliers.  Default 1.5
+*       boxLineColor - Outline color of the box
+*       boxFillColor - Fill color for the box
+*       whiskerColor - Line color used for whiskers
+*       outlierLineColor - Outline color of outlier circles
+*       outlierFillColor - Fill color of the outlier circles
+*       spotRadius - Radius of outlier circles
+*       medianColor - Line color of the median line
+*       target - Draw a target cross hair at the supplied value (default undefined)
+*
+*
+*
+*   Examples:
+*   $('#sparkline1').sparkline(myvalues, { lineColor: '#f00', fillColor: false });
+*   $('.barsparks').sparkline('html', { type:'bar', height:'40px', barWidth:5 });
+*   $('#tristate').sparkline([1,1,-1,1,0,0,-1], { type:'tristate' }):
+*   $('#discrete').sparkline([1,3,4,5,5,3,4,5], { type:'discrete' });
+*   $('#bullet').sparkline([10,12,12,9,7], { type:'bullet' });
+*   $('#pie').sparkline([1,1,2], { type:'pie' });
+*/
+
+/*jslint regexp: true, browser: true, jquery: true, white: true, nomen: false, plusplus: false, maxerr: 500, indent: 4 */
+
+(function(document, Math, undefined) { // performance/minified-size optimization
+(function(factory) {
+    if(typeof define === 'function' && define.amd) {
+        define(['jquery'], factory);
+    } else if (jQuery && !jQuery.fn.sparkline) {
+        factory(jQuery);
+    }
+}
+(function($) {
+    'use strict';
+
+    var UNSET_OPTION = {},
+        getDefaults, createClass, SPFormat, clipval, quartile, normalizeValue, normalizeValues,
+        remove, isNumber, all, sum, addCSS, ensureArray, formatNumber, RangeMap,
+        MouseHandler, Tooltip, barHighlightMixin,
+        line, bar, tristate, discrete, bullet, pie, box, defaultStyles, initStyles,
+        VShape, VCanvas_base, VCanvas_canvas, VCanvas_vml, pending, shapeCount = 0;
+
+    /**
+     * Default configuration settings
+     */
+    getDefaults = function () {
+        return {
+            // Settings common to most/all chart types
+            common: {
+                type: 'line',
+                lineColor: '#00f',
+                fillColor: '#cdf',
+                defaultPixelsPerValue: 3,
+                width: 'auto',
+                height: 'auto',
+                composite: false,
+                tagValuesAttribute: 'values',
+                tagOptionsPrefix: 'spark',
+                enableTagOptions: false,
+                enableHighlight: true,
+                highlightLighten: 1.4,
+                tooltipSkipNull: true,
+                tooltipPrefix: '',
+                tooltipSuffix: '',
+                disableHiddenCheck: false,
+                numberFormatter: false,
+                numberDigitGroupCount: 3,
+                numberDigitGroupSep: ',',
+                numberDecimalMark: '.',
+                disableTooltips: false,
+                disableInteraction: false
+            },
+            // Defaults for line charts
+            line: {
+                spotColor: '#f80',
+                highlightSpotColor: '#5f5',
+                highlightLineColor: '#f22',
+                spotRadius: 1.5,
+                minSpotColor: '#f80',
+                maxSpotColor: '#f80',
+                lineWidth: 1,
+                normalRangeMin: undefined,
+                normalRangeMax: undefined,
+                normalRangeColor: '#ccc',
+                drawNormalOnTop: false,
+                chartRangeMin: undefined,
+                chartRangeMax: undefined,
+                chartRangeMinX: undefined,
+                chartRangeMaxX: undefined,
+                tooltipFormat: new SPFormat('<span style="color: {{color}}">&#9679;</span> {{prefix}}{{y}}{{suffix}}')
+            },
+            // Defaults for bar charts
+            bar: {
+                barColor: '#3366cc',
+                negBarColor: '#f44',
+                stackedBarColor: ['#3366cc', '#dc3912', '#ff9900', '#109618', '#66aa00',
+                    '#dd4477', '#0099c6', '#990099'],
+                zeroColor: undefined,
+                nullColor: undefined,
+                zeroAxis: true,
+                barWidth: 4,
+                barSpacing: 1,
+                chartRangeMax: undefined,
+                chartRangeMin: undefined,
+                chartRangeClip: false,
+                colorMap: undefined,
+                tooltipFormat: new SPFormat('<span style="color: {{color}}">&#9679;</span> {{prefix}}{{value}}{{suffix}}')
+            },
+            // Defaults for tristate charts
+            tristate: {
+                barWidth: 4,
+                barSpacing: 1,
+                posBarColor: '#6f6',
+                negBarColor: '#f44',
+                zeroBarColor: '#999',
+                colorMap: {},
+                tooltipFormat: new SPFormat('<span style="color: {{color}}">&#9679;</span> {{value:map}}'),
+                tooltipValueLookups: { map: { '-1': 'Loss', '0': 'Draw', '1': 'Win' } }
+            },
+            // Defaults for discrete charts
+            discrete: {
+                lineHeight: 'auto',
+                thresholdColor: undefined,
+                thresholdValue: 0,
+                chartRangeMax: undefined,
+                chartRangeMin: undefined,
+                chartRangeClip: false,
+                tooltipFormat: new SPFormat('{{prefix}}{{value}}{{suffix}}')
+            },
+            // Defaults for bullet charts
+            bullet: {
+                targetColor: '#f33',
+                targetWidth: 3, // width of the target bar in pixels
+                performanceColor: '#33f',
+                rangeColors: ['#d3dafe', '#a8b6ff', '#7f94ff'],
+                base: undefined, // set this to a number to change the base start number
+                tooltipFormat: new SPFormat('{{fieldkey:fields}} - {{value}}'),
+                tooltipValueLookups: { fields: {r: 'Range', p: 'Performance', t: 'Target'} }
+            },
+            // Defaults for pie charts
+            pie: {
+                offset: 0,
+                sliceColors: ['#3366cc', '#dc3912', '#ff9900', '#109618', '#66aa00',
+                    '#dd4477', '#0099c6', '#990099'],
+                borderWidth: 0,
+                borderColor: '#000',
+                tooltipFormat: new SPFormat('<span style="color: {{color}}">&#9679;</span> {{value}} ({{percent.1}}%)')
+            },
+            // Defaults for box plots
+            box: {
+                raw: false,
+                boxLineColor: '#000',
+                boxFillColor: '#cdf',
+                whiskerColor: '#000',
+                outlierLineColor: '#333',
+                outlierFillColor: '#fff',
+                medianColor: '#f00',
+                showOutliers: true,
+                outlierIQR: 1.5,
+                spotRadius: 1.5,
+                target: undefined,
+                targetColor: '#4a2',
+                chartRangeMax: undefined,
+                chartRangeMin: undefined,
+                tooltipFormat: new SPFormat('{{field:fields}}: {{value}}'),
+                tooltipFormatFieldlistKey: 'field',
+                tooltipValueLookups: { fields: { lq: 'Lower Quartile', med: 'Median',
+                    uq: 'Upper Quartile', lo: 'Left Outlier', ro: 'Right Outlier',
+                    lw: 'Left Whisker', rw: 'Right Whisker'} }
+            }
+        };
+    };
+
+    // You can have tooltips use a css class other than jqstooltip by specifying tooltipClassname
+    defaultStyles = '.jqstooltip { ' +
+            'position: absolute;' +
+            'left: 0px;' +
+            'top: 0px;' +
+            'visibility: hidden;' +
+            'background: rgb(0, 0, 0) transparent;' +
+            'background-color: rgba(0,0,0,0.6);' +
+            'filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000);' +
+            '-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)";' +
+            'color: white;' +
+            'font: 10px arial, san serif;' +
+            'text-align: left;' +
+            'white-space: nowrap;' +
+            'padding: 5px;' +
+            'border: 1px solid white;' +
+            'z-index: 10000;' +
+            '}' +
+            '.jqsfield { ' +
+            'color: white;' +
+            'font: 10px arial, san serif;' +
+            'text-align: left;' +
+            '}';
+
+    /**
+     * Utilities
+     */
+
+    createClass = function (/* [baseclass, [mixin, ...]], definition */) {
+        var Class, args;
+        Class = function () {
+            this.init.apply(this, arguments);
+        };
+        if (arguments.length > 1) {
+            if (arguments[0]) {
+                Class.prototype = $.extend(new arguments[0](), arguments[arguments.length - 1]);
+                Class._super = arguments[0].prototype;
+            } else {
+                Class.prototype = arguments[arguments.length - 1];
+            }
+            if (arguments.length > 2) {
+                args = Array.prototype.slice.call(arguments, 1, -1);
+                args.unshift(Class.prototype);
+                $.extend.apply($, args);
+            }
+        } else {
+            Class.prototype = arguments[0];
+        }
+        Class.prototype.cls = Class;
+        return Class;
+    };
+
+    /**
+     * Wraps a format string for tooltips
+     * {{x}}
+     * {{x.2}
+     * {{x:months}}
+     */
+    $.SPFormatClass = SPFormat = createClass({
+        fre: /\{\{([\w.]+?)(:(.+?))?\}\}/g,
+        precre: /(\w+)\.(\d+)/,
+
+        init: function (format, fclass) {
+            this.format = format;
+            this.fclass = fclass;
+        },
+
+        render: function (fieldset, lookups, options) {
+            var self = this,
+                fields = fieldset,
+                match, token, lookupkey, fieldvalue, prec;
+            return this.format.replace(this.fre, function () {
+                var lookup;
+                token = arguments[1];
+                lookupkey = arguments[3];
+                match = self.precre.exec(token);
+                if (match) {
+                    prec = match[2];
+                    token = match[1];
+                } else {
+                    prec = false;
+                }
+                fieldvalue = fields[token];
+                if (fieldvalue === undefined) {
+                    return '';
+                }
+                if (lookupkey && lookups && lookups[lookupkey]) {
+                    lookup = lookups[lookupkey];
+                    if (lookup.get) { // RangeMap
+                        return lookups[lookupkey].get(fieldvalue) || fieldvalue;
+                    } else {
+                        return lookups[lookupkey][fieldvalue] || fieldvalue;
+                    }
+                }
+                if (isNumber(fieldvalue)) {
+                    if (options.get('numberFormatter')) {
+                        fieldvalue = options.get('numberFormatter')(fieldvalue);
+                    } else {
+                        fieldvalue = formatNumber(fieldvalue, prec,
+                            options.get('numberDigitGroupCount'),
+                            options.get('numberDigitGroupSep'),
+                            options.get('numberDecimalMark'));
+                    }
+                }
+                return fieldvalue;
+            });
+        }
+    });
+
+    // convience method to avoid needing the new operator
+    $.spformat = function(format, fclass) {
+        return new SPFormat(format, fclass);
+    };
+
+    clipval = function (val, min, max) {
+        if (val < min) {
+            return min;
+        }
+        if (val > max) {
+            return max;
+        }
+        return val;
+    };
+
+    quartile = function (values, q) {
+        var vl;
+        if (q === 2) {
+            vl = Math.floor(values.length / 2);
+            return values.length % 2 ? values[vl] : (values[vl-1] + values[vl]) / 2;
+        } else {
+            if (values.length % 2 ) { // odd
+                vl = (values.length * q + q) / 4;
+                return vl % 1 ? (values[Math.floor(vl)] + values[Math.floor(vl) - 1]) / 2 : values[vl-1];
+            } else { //even
+                vl = (values.length * q + 2) / 4;
+                return vl % 1 ? (values[Math.floor(vl)] + values[Math.floor(vl) - 1]) / 2 :  values[vl-1];
+
+            }
+        }
+    };
+
+    normalizeValue = function (val) {
+        var nf;
+        switch (val) {
+            case 'undefined':
+                val = undefined;
+                break;
+            case 'null':
+                val = null;
+                break;
+            case 'true':
+                val = true;
+                break;
+            case 'false':
+                val = false;
+                break;
+            default:
+                nf = parseFloat(val);
+                if (val == nf) {
+                    val = nf;
+                }
+        }
+        return val;
+    };
+
+    normalizeValues = function (vals) {
+        var i, result = [];
+        for (i = vals.length; i--;) {
+            result[i] = normalizeValue(vals[i]);
+        }
+        return result;
+    };
+
+    remove = function (vals, filter) {
+        var i, vl, result = [];
+        for (i = 0, vl = vals.length; i < vl; i++) {
+            if (vals[i] !== filter) {
+                result.push(vals[i]);
+            }
+        }
+        return result;
+    };
+
+    isNumber = function (num) {
+        return !isNaN(parseFloat(num)) && isFinite(num);
+    };
+
+    formatNumber = function (num, prec, groupsize, groupsep, decsep) {
+        var p, i;
+        num = (prec === false ? parseFloat(num).toString() : num.toFixed(prec)).split('');
+        p = (p = $.inArray('.', num)) < 0 ? num.length : p;
+        if (p < num.length) {
+            num[p] = decsep;
+        }
+        for (i = p - groupsize; i > 0; i -= groupsize) {
+            num.splice(i, 0, groupsep);
+        }
+        return num.join('');
+    };
+
+    // determine if all values of an array match a value
+    // returns true if the array is empty
+    all = function (val, arr, ignoreNull) {
+        var i;
+        for (i = arr.length; i--; ) {
+            if (ignoreNull && arr[i] === null) continue;
+            if (arr[i] !== val) {
+                return false;
+            }
+        }
+        return true;
+    };
+
+    // sums the numeric values in an array, ignoring other values
+    sum = function (vals) {
+        var total = 0, i;
+        for (i = vals.length; i--;) {
+            total += typeof vals[i] === 'number' ? vals[i] : 0;
+        }
+        return total;
+    };
+
+    ensureArray = function (val) {
+        return $.isArray(val) ? val : [val];
+    };
+
+    // http://paulirish.com/2008/bookmarklet-inject-new-css-rules/
+    addCSS = function(css) {
+        var tag;
+        //if ('\v' == 'v') /* ie only */ {
+        if (document.createStyleSheet) {
+            document.createStyleSheet().cssText = css;
+        } else {
+            tag = document.createElement('style');
+            tag.type = 'text/css';
+            document.getElementsByTagName('head')[0].appendChild(tag);
+            tag[(typeof document.body.style.WebkitAppearance == 'string') /* webkit only */ ? 'innerText' : 'innerHTML'] = css;
+        }
+    };
+
+    // Provide a cross-browser interface to a few simple drawing primitives
+    $.fn.simpledraw = function (width, height, useExisting, interact) {
+        var target, mhandler;
+        if (useExisting && (target = this.data('_jqs_vcanvas'))) {
+            return target;
+        }
+
+        if ($.fn.sparkline.canvas === false) {
+            // We've already determined that neither Canvas nor VML are available
+            return false;
+
+        } else if ($.fn.sparkline.canvas === undefined) {
+            // No function defined yet -- need to see if we support Canvas or VML
+            var el = document.createElement('canvas');
+            if (!!(el.getContext && el.getContext('2d'))) {
+                // Canvas is available
+                $.fn.sparkline.canvas = function(width, height, target, interact) {
+                    return new VCanvas_canvas(width, height, target, interact);
+                };
+            } else if (document.namespaces && !document.namespaces.v) {
+                // VML is available
+                document.namespaces.add('v', 'urn:schemas-microsoft-com:vml', '#default#VML');
+                $.fn.sparkline.canvas = function(width, height, target, interact) {
+                    return new VCanvas_vml(width, height, target);
+                };
+            } else {
+                // Neither Canvas nor VML are available
+                $.fn.sparkline.canvas = false;
+                return false;
+            }
+        }
+
+        if (width === undefined) {
+            width = $(this).innerWidth();
+        }
+        if (height === undefined) {
+            height = $(this).innerHeight();
+        }
+
+        target = $.fn.sparkline.canvas(width, height, this, interact);
+
+        mhandler = $(this).data('_jqs_mhandler');
+        if (mhandler) {
+            mhandler.registerCanvas(target);
+        }
+        return target;
+    };
+
+    $.fn.cleardraw = function () {
+        var target = this.data('_jqs_vcanvas');
+        if (target) {
+            target.reset();
+        }
+    };
+
+    $.RangeMapClass = RangeMap = createClass({
+        init: function (map) {
+            var key, range, rangelist = [];
+            for (key in map) {
+                if (map.hasOwnProperty(key) && typeof key === 'string' && key.indexOf(':') > -1) {
+                    range = key.split(':');
+                    range[0] = range[0].length === 0 ? -Infinity : parseFloat(range[0]);
+                    range[1] = range[1].length === 0 ? Infinity : parseFloat(range[1]);
+                    range[2] = map[key];
+                    rangelist.push(range);
+                }
+            }
+            this.map = map;
+            this.rangelist = rangelist || false;
+        },
+
+        get: function (value) {
+            var rangelist = this.rangelist,
+                i, range, result;
+            if ((result = this.map[value]) !== undefined) {
+                return result;
+            }
+            if (rangelist) {
+                for (i = rangelist.length; i--;) {
+                    range = rangelist[i];
+                    if (range[0] <= value && range[1] >= value) {
+                        return range[2];
+                    }
+                }
+            }
+            return undefined;
+        }
+    });
+
+    // Convenience function
+    $.range_map = function(map) {
+        return new RangeMap(map);
+    };
+
+    MouseHandler = createClass({
+        init: function (el, options) {
+            var $el = $(el);
+            this.$el = $el;
+            this.options = options;
+            this.currentPageX = 0;
+            this.currentPageY = 0;
+            this.el = el;
+            this.splist = [];
+            this.tooltip = null;
+            this.over = false;
+            this.displayTooltips = !options.get('disableTooltips');
+            this.highlightEnabled = !options.get('disableHighlight');
+        },
+
+        registerSparkline: function (sp) {
+            this.splist.push(sp);
+            if (this.over) {
+                this.updateDisplay();
+            }
+        },
+
+        registerCanvas: function (canvas) {
+            var $canvas = $(canvas.canvas);
+            this.canvas = canvas;
+            this.$canvas = $canvas;
+            $canvas.mouseenter($.proxy(this.mouseenter, this));
+            $canvas.mouseleave($.proxy(this.mouseleave, this));
+            $canvas.click($.proxy(this.mouseclick, this));
+        },
+
+        reset: function (removeTooltip) {
+            this.splist = [];
+            if (this.tooltip && removeTooltip) {
+                this.tooltip.remove();
+                this.tooltip = undefined;
+            }
+        },
+
+        mouseclick: function (e) {
+            var clickEvent = $.Event('sparklineClick');
+            clickEvent.originalEvent = e;
+            clickEvent.sparklines = this.splist;
+            this.$el.trigger(clickEvent);
+        },
+
+        mouseenter: function (e) {
+            $(document.body).unbind('mousemove.jqs');
+            $(document.body).bind('mousemove.jqs', $.proxy(this.mousemove, this));
+            this.over = true;
+            this.currentPageX = e.pageX;
+            this.currentPageY = e.pageY;
+            this.currentEl = e.target;
+            if (!this.tooltip && this.displayTooltips) {
+                this.tooltip = new Tooltip(this.options);
+                this.tooltip.updatePosition(e.pageX, e.pageY);
+            }
+            this.updateDisplay();
+        },
+
+        mouseleave: function () {
+            $(document.body).unbind('mousemove.jqs');
+            var splist = this.splist,
+                 spcount = splist.length,
+                 needsRefresh = false,
+                 sp, i;
+            this.over = false;
+            this.currentEl = null;
+
+            if (this.tooltip) {
+                this.tooltip.remove();
+                this.tooltip = null;
+            }
+
+            for (i = 0; i < spcount; i++) {
+                sp = splist[i];
+                if (sp.clearRegionHighlight()) {
+                    needsRefresh = true;
+                }
+            }
+
+            if (needsRefresh) {
+                this.canvas.render();
+            }
+        },
+
+        mousemove: function (e) {
+            this.currentPageX = e.pageX;
+            this.currentPageY = e.pageY;
+            this.currentEl = e.target;
+            if (this.tooltip) {
+                this.tooltip.updatePosition(e.pageX, e.pageY);
+            }
+            this.updateDisplay();
+        },
+
+        updateDisplay: function () {
+            var splist = this.splist,
+                 spcount = splist.length,
+                 needsRefresh = false,
+                 offset = this.$canvas.offset(),
+                 localX = this.currentPageX - offset.left,
+                 localY = this.currentPageY - offset.top,
+                 tooltiphtml, sp, i, result, changeEvent;
+            if (!this.over) {
+                return;
+            }
+            for (i = 0; i < spcount; i++) {
+                sp = splist[i];
+                result = sp.setRegionHighlight(this.currentEl, localX, localY);
+                if (result) {
+                    needsRefresh = true;
+                }
+            }
+            if (needsRefresh) {
+                changeEvent = $.Event('sparklineRegionChange');
+                changeEvent.sparklines = this.splist;
+                this.$el.trigger(changeEvent);
+                if (this.tooltip) {
+                    tooltiphtml = '';
+                    for (i = 0; i < spcount; i++) {
+                        sp = splist[i];
+                        tooltiphtml += sp.getCurrentRegionTooltip();
+                    }
+                    this.tooltip.setContent(tooltiphtml);
+                }
+                if (!this.disableHighlight) {
+                    this.canvas.render();
+                }
+            }
+            if (result === null) {
+                this.mouseleave();
+            }
+        }
+    });
+
+
+    Tooltip = createClass({
+        sizeStyle: 'position: static !important;' +
+            'display: block !important;' +
+            'visibility: hidden !important;' +
+            'float: left !important;',
+
+        init: function (options) {
+            var tooltipClassname = options.get('tooltipClassname', 'jqstooltip'),
+                sizetipStyle = this.sizeStyle,
+                offset;
+            this.container = options.get('tooltipContainer') || document.body;
+            this.tooltipOffsetX = options.get('tooltipOffsetX', 10);
+            this.tooltipOffsetY = options.get('tooltipOffsetY', 12);
+            // remove any previous lingering tooltip
+            $('#jqssizetip').remove();
+            $('#jqstooltip').remove();
+            this.sizetip = $('<div/>', {
+                id: 'jqssizetip',
+                style: sizetipStyle,
+                'class': tooltipClassname
+            });
+            this.tooltip = $('<div/>', {
+                id: 'jqstooltip',
+                'class': tooltipClassname
+            }).appendTo(this.container);
+            // account for the container's location
+            offset = this.tooltip.offset();
+            this.offsetLeft = offset.left;
+            this.offsetTop = offset.top;
+            this.hidden = true;
+            $(window).unbind('resize.jqs scroll.jqs');
+            $(window).bind('resize.jqs scroll.jqs', $.proxy(this.updateWindowDims, this));
+            this.updateWindowDims();
+        },
+
+        updateWindowDims: function () {
+            this.scrollTop = $(window).scrollTop();
+            this.scrollLeft = $(window).scrollLeft();
+            this.scrollRight = this.scrollLeft + $(window).width();
+            this.updatePosition();
+        },
+
+        getSize: function (content) {
+            this.sizetip.html(content).appendTo(this.container);
+            this.width = this.sizetip.width() + 1;
+            this.height = this.sizetip.height();
+            this.sizetip.remove();
+        },
+
+        setContent: function (content) {
+            if (!content) {
+                this.tooltip.css('visibility', 'hidden');
+                this.hidden = true;
+                return;
+            }
+            this.getSize(content);
+            this.tooltip.html(content)
+                .css({
+                    'width': this.width,
+                    'height': this.height,
+                    'visibility': 'visible'
+                });
+            if (this.hidden) {
+                this.hidden = false;
+                this.updatePosition();
+            }
+        },
+
+        updatePosition: function (x, y) {
+            if (x === undefined) {
+                if (this.mousex === undefined) {
+                    return;
+                }
+                x = this.mousex - this.offsetLeft;
+                y = this.mousey - this.offsetTop;
+
+            } else {
+                this.mousex = x = x - this.offsetLeft;
+                this.mousey = y = y - this.offsetTop;
+            }
+            if (!this.height || !this.width || this.hidden) {
+                return;
+            }
+
+            y -= this.height + this.tooltipOffsetY;
+            x += this.tooltipOffsetX;
+
+            if (y < this.scrollTop) {
+                y = this.scrollTop;
+            }
+            if (x < this.scrollLeft) {
+                x = this.scrollLeft;
+            } else if (x + this.width > this.scrollRight) {
+                x = this.scrollRight - this.width;
+            }
+
+            this.tooltip.css({
+                'left': x,
+                'top': y
+            });
+        },
+
+        remove: function () {
+            this.tooltip.remove();
+            this.sizetip.remove();
+            this.sizetip = this.tooltip = undefined;
+            $(window).unbind('resize.jqs scroll.jqs');
+        }
+    });
+
+    initStyles = function() {
+        addCSS(defaultStyles);
+    };
+
+    $(initStyles);
+
+    pending = [];
+    $.fn.sparkline = function (userValues, userOptions) {
+        return this.each(function () {
+            var options = new $.fn.sparkline.options(this, userOptions),
+                 $this = $(this),
+                 render, i;
+            render = function () {
+                var values, width, height, tmp, mhandler, sp, vals;
+                if (userValues === 'html' || userValues === undefined) {
+                    vals = this.getAttribute(options.get('tagValuesAttribute'));
+                    if (vals === undefined || vals === null) {
+                        vals = $this.html();
+                    }
+                    values = vals.replace(/(^\s*<!--)|(-->\s*$)|\s+/g, '').split(',');
+                } else {
+                    values = userValues;
+                }
+
+                width = options.get('width') === 'auto' ? values.length * options.get('defaultPixelsPerValue') : options.get('width');
+                if (options.get('height') === 'auto') {
+                    if (!options.get('composite') || !$.data(this, '_jqs_vcanvas')) {
+                        // must be a better way to get the line height
+                        tmp = document.createElement('span');
+                        tmp.innerHTML = 'a';
+                        $this.html(tmp);
+                        height = $(tmp).innerHeight() || $(tmp).height();
+                        $(tmp).remove();
+                        tmp = null;
+                    }
+                } else {
+                    height = options.get('height');
+                }
+
+                if (!options.get('disableInteraction')) {
+                    mhandler = $.data(this, '_jqs_mhandler');
+                    if (!mhandler) {
+                        mhandler = new MouseHandler(this, options);
+                        $.data(this, '_jqs_mhandler', mhandler);
+                    } else if (!options.get('composite')) {
+                        mhandler.reset();
+                    }
+                } else {
+                    mhandler = false;
+                }
+
+                if (options.get('composite') && !$.data(this, '_jqs_vcanvas')) {
+                    if (!$.data(this, '_jqs_errnotify')) {
+                        alert('Attempted to attach a composite sparkline to an element with no existing sparkline');
+                        $.data(this, '_jqs_errnotify', true);
+                    }
+                    return;
+                }
+
+                sp = new $.fn.sparkline[options.get('type')](this, values, options, width, height);
+
+                sp.render();
+
+                if (mhandler) {
+                    mhandler.registerSparkline(sp);
+                }
+            };
+            if (($(this).html() && !options.get('disableHiddenCheck') && $(this).is(':hidden')) || !$(this).parents('body').length) {
+                if (!options.get('composite') && $.data(this, '_jqs_pending')) {
+                    // remove any existing references to the element
+                    for (i = pending.length; i; i--) {
+                        if (pending[i - 1][0] == this) {
+                            pending.splice(i - 1, 1);
+                        }
+                    }
+                }
+                pending.push([this, render]);
+                $.data(this, '_jqs_pending', true);
+            } else {
+                render.call(this);
+            }
+        });
+    };
+
+    $.fn.sparkline.defaults = getDefaults();
+
+
+    $.sparkline_display_visible = function () {
+        var el, i, pl;
+        var done = [];
+        for (i = 0, pl = pending.length; i < pl; i++) {
+            el = pending[i][0];
+            if ($(el).is(':visible') && !$(el).parents().is(':hidden')) {
+                pending[i][1].call(el);
+                $.data(pending[i][0], '_jqs_pending', false);
+                done.push(i);
+            } else if (!$(el).closest('html').length && !$.data(el, '_jqs_pending')) {
+                // element has been inserted and removed from the DOM
+                // If it was not yet inserted into the dom then the .data request
+                // will return true.
+                // removing from the dom causes the data to be removed.
+                $.data(pending[i][0], '_jqs_pending', false);
+                done.push(i);
+            }
+        }
+        for (i = done.length; i; i--) {
+            pending.splice(done[i - 1], 1);
+        }
+    };
+
+
+    /**
+     * User option handler
+     */
+    $.fn.sparkline.options = createClass({
+        init: function (tag, userOptions) {
+            var extendedOptions, defaults, base, tagOptionType;
+            this.userOptions = userOptions = userOptions || {};
+            this.tag = tag;
+            this.tagValCache = {};
+            defaults = $.fn.sparkline.defaults;
+            base = defaults.common;
+            this.tagOptionsPrefix = userOptions.enableTagOptions && (userOptions.tagOptionsPrefix || base.tagOptionsPrefix);
+
+            tagOptionType = this.getTagSetting('type');
+            if (tagOptionType === UNSET_OPTION) {
+                extendedOptions = defaults[userOptions.type || base.type];
+            } else {
+                extendedOptions = defaults[tagOptionType];
+            }
+            this.mergedOptions = $.extend({}, base, extendedOptions, userOptions);
+        },
+
+
+        getTagSetting: function (key) {
+            var prefix = this.tagOptionsPrefix,
+                val, i, pairs, keyval;
+            if (prefix === false || prefix === undefined) {
+                return UNSET_OPTION;
+            }
+            if (this.tagValCache.hasOwnProperty(key)) {
+                val = this.tagValCache.key;
+            } else {
+                val = this.tag.getAttribute(prefix + key);
+                if (val === undefined || val === null) {
+                    val = UNSET_OPTION;
+                } else if (val.substr(0, 1) === '[') {
+                    val = val.substr(1, val.length - 2).split(',');
+                    for (i = val.length; i--;) {
+                        val[i] = normalizeValue(val[i].replace(/(^\s*)|(\s*$)/g, ''));
+                    }
+                } else if (val.substr(0, 1) === '{') {
+                    pairs = val.substr(1, val.length - 2).split(',');
+                    val = {};
+                    for (i = pairs.length; i--;) {
+                        keyval = pairs[i].split(':', 2);
+                        val[keyval[0].replace(/(^\s*)|(\s*$)/g, '')] = normalizeValue(keyval[1].replace(/(^\s*)|(\s*$)/g, ''));
+                    }
+                } else {
+                    val = normalizeValue(val);
+                }
+                this.tagValCache.key = val;
+            }
+            return val;
+        },
+
+        get: function (key, defaultval) {
+            var tagOption = this.getTagSetting(key),
+                result;
+            if (tagOption !== UNSET_OPTION) {
+                return tagOption;
+            }
+            return (result = this.mergedOptions[key]) === undefined ? defaultval : result;
+        }
+    });
+
+
+    $.fn.sparkline._base = createClass({
+        disabled: false,
+
+        init: function (el, values, options, width, height) {
+            this.el = el;
+            this.$el = $(el);
+            this.values = values;
+            this.options = options;
+            this.width = width;
+            this.height = height;
+            this.currentRegion = undefined;
+        },
+
+        /**
+         * Setup the canvas
+         */
+        initTarget: function () {
+            var interactive = !this.options.get('disableInteraction');
+            if (!(this.target = this.$el.simpledraw(this.width, this.height, this.options.get('composite'), interactive))) {
+                this.disabled = true;
+            } else {
+                this.canvasWidth = this.target.pixelWidth;
+                this.canvasHeight = this.target.pixelHeight;
+            }
+        },
+
+        /**
+         * Actually render the chart to the canvas
+         */
+        render: function () {
+            if (this.disabled) {
+                this.el.innerHTML = '';
+                return false;
+            }
+            return true;
+        },
+
+        /**
+         * Return a region id for a given x/y co-ordinate
+         */
+        getRegion: function (x, y) {
+        },
+
+        /**
+         * Highlight an item based on the moused-over x,y co-ordinate
+         */
+        setRegionHighlight: function (el, x, y) {
+            var currentRegion = this.currentRegion,
+                highlightEnabled = !this.options.get('disableHighlight'),
+                newRegion;
+            if (x > this.canvasWidth || y > this.canvasHeight || x < 0 || y < 0) {
+                return null;
+            }
+            newRegion = this.getRegion(el, x, y);
+            if (currentRegion !== newRegion) {
+                if (currentRegion !== undefined && highlightEnabled) {
+                    this.removeHighlight();
+                }
+                this.currentRegion = newRegion;
+                if (newRegion !== undefined && highlightEnabled) {
+                    this.renderHighlight();
+                }
+                return true;
+            }
+            return false;
+        },
+
+        /**
+         * Reset any currently highlighted item
+         */
+        clearRegionHighlight: function () {
+            if (this.currentRegion !== undefined) {
+                this.removeHighlight();
+                this.currentRegion = undefined;
+                return true;
+            }
+            return false;
+        },
+
+        renderHighlight: function () {
+            this.changeHighlight(true);
+        },
+
+        removeHighlight: function () {
+            this.changeHighlight(false);
+        },
+
+        changeHighlight: function (highlight)  {},
+
+        /**
+         * Fetch the HTML to display as a tooltip
+         */
+        getCurrentRegionTooltip: function () {
+            var options = this.options,
+                header = '',
+                entries = [],
+                fields, formats, formatlen, fclass, text, i,
+                showFields, showFieldsKey, newFields, fv,
+                formatter, format, fieldlen, j;
+            if (this.currentRegion === undefined) {
+                return '';
+            }
+            fields = this.getCurrentRegionFields();
+            formatter = options.get('tooltipFormatter');
+            if (formatter) {
+                return formatter(this, options, fields);
+            }
+            if (options.get('tooltipChartTitle')) {
+                header += '<div class="jqs jqstitle">' + options.get('tooltipChartTitle') + '</div>\n';
+            }
+            formats = this.options.get('tooltipFormat');
+            if (!formats) {
+                return '';
+            }
+            if (!$.isArray(formats)) {
+                formats = [formats];
+            }
+            if (!$.isArray(fields)) {
+                fields = [fields];
+            }
+            showFields = this.options.get('tooltipFormatFieldlist');
+            showFieldsKey = this.options.get('tooltipFormatFieldlistKey');
+            if (showFields && showFieldsKey) {
+                // user-selected ordering of fields
+                newFields = [];
+                for (i = fields.length; i--;) {
+                    fv = fields[i][showFieldsKey];
+                    if ((j = $.inArray(fv, showFields)) != -1) {
+                        newFields[j] = fields[i];
+                    }
+                }
+                fields = newFields;
+            }
+            formatlen = formats.length;
+            fieldlen = fields.length;
+            for (i = 0; i < formatlen; i++) {
+                format = formats[i];
+                if (typeof format === 'string') {
+                    format = new SPFormat(format);
+                }
+                fclass = format.fclass || 'jqsfield';
+                for (j = 0; j < fieldlen; j++) {
+                    if (!fields[j].isNull || !options.get('tooltipSkipNull')) {
+                        $.extend(fields[j], {
+                            prefix: options.get('tooltipPrefix'),
+                            suffix: options.get('tooltipSuffix')
+                        });
+                        text = format.render(fields[j], options.get('tooltipValueLookups'), options);
+                        entries.push('<div class="' + fclass + '">' + text + '</div>');
+                    }
+                }
+            }
+            if (entries.length) {
+                return header + entries.join('\n');
+            }
+            return '';
+        },
+
+        getCurrentRegionFields: function () {},
+
+        calcHighlightColor: function (color, options) {
+            var highlightColor = options.get('highlightColor'),
+                lighten = options.get('highlightLighten'),
+                parse, mult, rgbnew, i;
+            if (highlightColor) {
+                return highlightColor;
+            }
+            if (lighten) {
+                // extract RGB values
+                parse = /^#([0-9a-f])([0-9a-f])([0-9a-f])$/i.exec(color) || /^#([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i.exec(color);
+                if (parse) {
+                    rgbnew = [];
+                    mult = color.length === 4 ? 16 : 1;
+                    for (i = 0; i < 3; i++) {
+                        rgbnew[i] = clipval(Math.round(parseInt(parse[i + 1], 16) * mult * lighten), 0, 255);
+                    }
+                    return 'rgb(' + rgbnew.join(',') + ')';
+                }
+
+            }
+            return color;
+        }
+
+    });
+
+    barHighlightMixin = {
+        changeHighlight: function (highlight) {
+            var currentRegion = this.currentRegion,
+                target = this.target,
+                shapeids = this.regionShapes[currentRegion],
+                newShapes;
+            // will be null if the region value was null
+            if (shapeids) {
+                newShapes = this.renderRegion(currentRegion, highlight);
+                if ($.isArray(newShapes) || $.isArray(shapeids)) {
+                    target.replaceWithShapes(shapeids, newShapes);
+                    this.regionShapes[currentRegion] = $.map(newShapes, function (newShape) {
+                        return newShape.id;
+                    });
+                } else {
+                    target.replaceWithShape(shapeids, newShapes);
+                    this.regionShapes[currentRegion] = newShapes.id;
+                }
+            }
+        },
+
+        render: function () {
+            var values = this.values,
+                target = this.target,
+                regionShapes = this.regionShapes,
+                shapes, ids, i, j;
+
+            if (!this.cls._super.render.call(this)) {
+                return;
+            }
+            for (i = values.length; i--;) {
+                shapes = this.renderRegion(i);
+                if (shapes) {
+                    if ($.isArray(shapes)) {
+                        ids = [];
+                        for (j = shapes.length; j--;) {
+                            shapes[j].append();
+                            ids.push(shapes[j].id);
+                        }
+                        regionShapes[i] = ids;
+                    } else {
+                        shapes.append();
+                        regionShapes[i] = shapes.id; // store just the shapeid
+                    }
+                } else {
+                    // null value
+                    regionShapes[i] = null;
+                }
+            }
+            target.render();
+        }
+    };
+
+    /**
+     * Line charts
+     */
+    $.fn.sparkline.line = line = createClass($.fn.sparkline._base, {
+        type: 'line',
+
+        init: function (el, values, options, width, height) {
+            line._super.init.call(this, el, values, options, width, height);
+            this.vertices = [];
+            this.regionMap = [];
+            this.xvalues = [];
+            this.yvalues = [];
+            this.yminmax = [];
+            this.hightlightSpotId = null;
+            this.lastShapeId = null;
+            this.initTarget();
+        },
+
+        getRegion: function (el, x, y) {
+            var i,
+                regionMap = this.regionMap; // maps regions to value positions
+            for (i = regionMap.length; i--;) {
+                if (regionMap[i] !== null && x >= regionMap[i][0] && x <= regionMap[i][1]) {
+                    return regionMap[i][2];
+                }
+            }
+            return undefined;
+        },
+
+        getCurrentRegionFields: function () {
+            var currentRegion = this.currentRegion;
+            return {
+                isNull: this.yvalues[currentRegion] === null,
+                x: this.xvalues[currentRegion],
+                y: this.yvalues[currentRegion],
+                color: this.options.get('lineColor'),
+                fillColor: this.options.get('fillColor'),
+                offset: currentRegion
+            };
+        },
+
+        renderHighlight: function () {
+            var currentRegion = this.currentRegion,
+                target = this.target,
+                vertex = this.vertices[currentRegion],
+                options = this.options,
+                spotRadius = options.get('spotRadius'),
+                highlightSpotColor = options.get('highlightSpotColor'),
+                highlightLineColor = options.get('highlightLineColor'),
+                highlightSpot, highlightLine;
+
+            if (!vertex) {
+                return;
+            }
+            if (spotRadius && highlightSpotColor) {
+                highlightSpot = target.drawCircle(vertex[0], vertex[1],
+                    spotRadius, undefined, highlightSpotColor);
+                this.highlightSpotId = highlightSpot.id;
+                target.insertAfterShape(this.lastShapeId, highlightSpot);
+            }
+            if (highlightLineColor) {
+                highlightLine = target.drawLine(vertex[0], this.canvasTop, vertex[0],
+                    this.canvasTop + this.canvasHeight, highlightLineColor);
+                this.highlightLineId = highlightLine.id;
+                target.insertAfterShape(this.lastShapeId, highlightLine);
+            }
+        },
+
+        removeHighlight: function () {
+            var target = this.target;
+            if (this.highlightSpotId) {
+                target.removeShapeId(this.highlightSpotId);
+                this.highlightSpotId = null;
+            }
+            if (this.highlightLineId) {
+                target.removeShapeId(this.highlightLineId);
+                this.highlightLineId = null;
+            }
+        },
+
+        scanValues: function () {
+            var values = this.values,
+                valcount = values.length,
+                xvalues = this.xvalues,
+                yvalues = this.yvalues,
+                yminmax = this.yminmax,
+                i, val, isStr, isArray, sp;
+            for (i = 0; i < valcount; i++) {
+                val = values[i];
+                isStr = typeof(values[i]) === 'string';
+                isArray = typeof(values[i]) === 'object' && values[i] instanceof Array;
+                sp = isStr && values[i].split(':');
+                if (isStr && sp.length === 2) { // x:y
+                    xvalues.push(Number(sp[0]));
+                    yvalues.push(Number(sp[1]));
+                    yminmax.push(Number(sp[1]));
+                } else if (isArray) {
+                    xvalues.push(val[0]);
+                    yvalues.push(val[1]);
+                    yminmax.push(val[1]);
+                } else {
+                    xvalues.push(i);
+                    if (values[i] === null || values[i] === 'null') {
+                        yvalues.push(null);
+                    } else {
+                        yvalues.push(Number(val));
+                        yminmax.push(Number(val));
+                    }
+                }
+            }
+            if (this.options.get('xvalues')) {
+                xvalues = this.options.get('xvalues');
+            }
+
+            this.maxy = this.maxyorg = Math.max.apply(Math, yminmax);
+            this.miny = this.minyorg = Math.min.apply(Math, yminmax);
+
+            this.maxx = Math.max.apply(Math, xvalues);
+            this.minx = Math.min.apply(Math, xvalues);
+
+            this.xvalues = xvalues;
+            this.yvalues = yvalues;
+            this.yminmax = yminmax;
+
+        },
+
+        processRangeOptions: function () {
+            var options = this.options,
+                normalRangeMin = options.get('normalRangeMin'),
+                normalRangeMax = options.get('normalRangeMax');
+
+            if (normalRangeMin !== undefined) {
+                if (normalRangeMin < this.miny) {
+                    this.miny = normalRangeMin;
+                }
+                if (normalRangeMax > this.maxy) {
+                    this.maxy = normalRangeMax;
+                }
+            }
+            if (options.get('chartRangeMin') !== undefined && (options.get('chartRangeClip') || options.get('chartRangeMin') < this.miny)) {
+                this.miny = options.get('chartRangeMin');
+            }
+            if (options.get('chartRangeMax') !== undefined && (options.get('chartRangeClip') || options.get('chartRangeMax') > this.maxy)) {
+                this.maxy = options.get('chartRangeMax');
+            }
+            if (options.get('chartRangeMinX') !== undefined && (options.get('chartRangeClipX') || options.get('chartRangeMinX') < this.minx)) {
+                this.minx = options.get('chartRangeMinX');
+            }
+            if (options.get('chartRangeMaxX') !== undefined && (options.get('chartRangeClipX') || options.get('chartRangeMaxX') > this.maxx)) {
+                this.maxx = options.get('chartRangeMaxX');
+            }
+
+        },
+
+        drawNormalRange: function (canvasLeft, canvasTop, canvasHeight, canvasWidth, rangey) {
+            var normalRangeMin = this.options.get('normalRangeMin'),
+                normalRangeMax = this.options.get('normalRangeMax'),
+                ytop = canvasTop + Math.round(canvasHeight - (canvasHeight * ((normalRangeMax - this.miny) / rangey))),
+                height = Math.round((canvasHeight * (normalRangeMax - normalRangeMin)) / rangey);
+            this.target.drawRect(canvasLeft, ytop, canvasWidth, height, undefined, this.options.get('normalRangeColor')).append();
+        },
+
+        render: function () {
+            var options = this.options,
+                target = this.target,
+                canvasWidth = this.canvasWidth,
+                canvasHeight = this.canvasHeight,
+                vertices = this.vertices,
+                spotRadius = options.get('spotRadius'),
+                regionMap = this.regionMap,
+                rangex, rangey, yvallast,
+                canvasTop, canvasLeft,
+                vertex, path, paths, x, y, xnext, xpos, xposnext,
+                last, next, yvalcount, lineShapes, fillShapes, plen,
+                valueSpots, hlSpotsEnabled, color, xvalues, yvalues, i;
+
+            if (!line._super.render.call(this)) {
+                return;
+            }
+
+            this.scanValues();
+            this.processRangeOptions();
+
+            xvalues = this.xvalues;
+            yvalues = this.yvalues;
+
+            if (!this.yminmax.length || this.yvalues.length < 2) {
+                // empty or all null valuess
+                return;
+            }
+
+            canvasTop = canvasLeft = 0;
+
+            rangex = this.maxx - this.minx === 0 ? 1 : this.maxx - this.minx;
+            rangey = this.maxy - this.miny === 0 ? 1 : this.maxy - this.miny;
+            yvallast = this.yvalues.length - 1;
+
+            if (spotRadius && (canvasWidth < (spotRadius * 4) || canvasHeight < (spotRadius * 4))) {
+                spotRadius = 0;
+            }
+            if (spotRadius) {
+                // adjust the canvas size as required so that spots will fit
+                hlSpotsEnabled = options.get('highlightSpotColor') &&  !options.get('disableInteraction');
+                if (hlSpotsEnabled || options.get('minSpotColor') || (options.get('spotColor') && yvalues[yvallast] === this.miny)) {
+                    canvasHeight -= Math.ceil(spotRadius);
+                }
+                if (hlSpotsEnabled || options.get('maxSpotColor') || (options.get('spotColor') && yvalues[yvallast] === this.maxy)) {
+                    canvasHeight -= Math.ceil(spotRadius);
+                    canvasTop += Math.ceil(spotRadius);
+                }
+                if (hlSpotsEnabled ||
+                     ((options.get('minSpotColor') || options.get('maxSpotColor')) && (yvalues[0] === this.miny || yvalues[0] === this.maxy))) {
+                    canvasLeft += Math.ceil(spotRadius);
+                    canvasWidth -= Math.ceil(spotRadius);
+                }
+                if (hlSpotsEnabled || options.get('spotColor') ||
+                    (options.get('minSpotColor') || options.get('maxSpotColor') &&
+                        (yvalues[yvallast] === this.miny || yvalues[yvallast] === this.maxy))) {
+                    canvasWidth -= Math.ceil(spotRadius);
+                }
+            }
+
+
+            canvasHeight--;
+
+            if (options.get('normalRangeMin') !== undefined && !options.get('drawNormalOnTop')) {
+                this.drawNormalRange(canvasLeft, canvasTop, canvasHeight, canvasWidth, rangey);
+            }
+
+            path = [];
+            paths = [path];
+            last = next = null;
+            yvalcount = yvalues.length;
+            for (i = 0; i < yvalcount; i++) {
+                x = xvalues[i];
+                xnext = xvalues[i + 1];
+                y = yvalues[i];
+                xpos = canvasLeft + Math.round((x - this.minx) * (canvasWidth / rangex));
+                xposnext = i < yvalcount - 1 ? canvasLeft + Math.round((xnext - this.minx) * (canvasWidth / rangex)) : canvasWidth;
+                next = xpos + ((xposnext - xpos) / 2);
+                regionMap[i] = [last || 0, next, i];
+                last = next;
+                if (y === null) {
+                    if (i) {
+                        if (yvalues[i - 1] !== null) {
+                            path = [];
+                            paths.push(path);
+                        }
+                        vertices.push(null);
+                    }
+                } else {
+                    if (y < this.miny) {
+                        y = this.miny;
+                    }
+                    if (y > this.maxy) {
+                        y = this.maxy;
+                    }
+                    if (!path.length) {
+                        // previous value was null
+                        path.push([xpos, canvasTop + canvasHeight]);
+                    }
+                    vertex = [xpos, canvasTop + Math.round(canvasHeight - (canvasHeight * ((y - this.miny) / rangey)))];
+                    path.push(vertex);
+                    vertices.push(vertex);
+                }
+            }
+
+            lineShapes = [];
+            fillShapes = [];
+            plen = paths.length;
+            for (i = 0; i < plen; i++) {
+                path = paths[i];
+                if (path.length) {
+                    if (options.get('fillColor')) {
+                        path.push([path[path.length - 1][0], (canvasTop + canvasHeight)]);
+                        fillShapes.push(path.slice(0));
+                        path.pop();
+                    }
+                    // if there's only a single point in this path, then we want to display it
+                    // as a vertical line which means we keep path[0]  as is
+                    if (path.length > 2) {
+                        // else we want the first value
+                        path[0] = [path[0][0], path[1][1]];
+                    }
+                    lineShapes.push(path);
+                }
+            }
+
+            // draw the fill first, then optionally the normal range, then the line on top of that
+            plen = fillShapes.length;
+            for (i = 0; i < plen; i++) {
+                target.drawShape(fillShapes[i],
+                    options.get('fillColor'), options.get('fillColor')).append();
+            }
+
+            if (options.get('normalRangeMin') !== undefined && options.get('drawNormalOnTop')) {
+                this.drawNormalRange(canvasLeft, canvasTop, canvasHeight, canvasWidth, rangey);
+            }
+
+            plen = lineShapes.length;
+            for (i = 0; i < plen; i++) {
+                target.drawShape(lineShapes[i], options.get('lineColor'), undefined,
+                    options.get('lineWidth')).append();
+            }
+
+            if (spotRadius && options.get('valueSpots')) {
+                valueSpots = options.get('valueSpots');
+                if (valueSpots.get === undefined) {
+                    valueSpots = new RangeMap(valueSpots);
+                }
+                for (i = 0; i < yvalcount; i++) {
+                    color = valueSpots.get(yvalues[i]);
+                    if (color) {
+                        target.drawCircle(canvasLeft + Math.round((xvalues[i] - this.minx) * (canvasWidth / rangex)),
+                            canvasTop + Math.round(canvasHeight - (canvasHeight * ((yvalues[i] - this.miny) / rangey))),
+                            spotRadius, undefined,
+                            color).append();
+                    }
+                }
+
+            }
+            if (spotRadius && options.get('spotColor') && yvalues[yvallast] !== null) {
+                target.drawCircle(canvasLeft + Math.round((xvalues[xvalues.length - 1] - this.minx) * (canvasWidth / rangex)),
+                    canvasTop + Math.round(canvasHeight - (canvasHeight * ((yvalues[yvallast] - this.miny) / rangey))),
+                    spotRadius, undefined,
+                    options.get('spotColor')).append();
+            }
+            if (this.maxy !== this.minyorg) {
+                if (spotRadius && options.get('minSpotColor')) {
+                    x = xvalues[$.inArray(this.minyorg, yvalues)];
+                    target.drawCircle(canvasLeft + Math.round((x - this.minx) * (canvasWidth / rangex)),
+                        canvasTop + Math.round(canvasHeight - (canvasHeight * ((this.minyorg - this.miny) / rangey))),
+                        spotRadius, undefined,
+                        options.get('minSpotColor')).append();
+                }
+                if (spotRadius && options.get('maxSpotColor')) {
+                    x = xvalues[$.inArray(this.maxyorg, yvalues)];
+                    target.drawCircle(canvasLeft + Math.round((x - this.minx) * (canvasWidth / rangex)),
+                        canvasTop + Math.round(canvasHeight - (canvasHeight * ((this.maxyorg - this.miny) / rangey))),
+                        spotRadius, undefined,
+                        options.get('maxSpotColor')).append();
+                }
+            }
+
+            this.lastShapeId = target.getLastShapeId();
+            this.canvasTop = canvasTop;
+            target.render();
+        }
+    });
+
+    /**
+     * Bar charts
+     */
+    $.fn.sparkline.bar = bar = createClass($.fn.sparkline._base, barHighlightMixin, {
+        type: 'bar',
+
+        init: function (el, values, options, width, height) {
+            var barWidth = parseInt(options.get('barWidth'), 10),
+                barSpacing = parseInt(options.get('barSpacing'), 10),
+                chartRangeMin = options.get('chartRangeMin'),
+                chartRangeMax = options.get('chartRangeMax'),
+                chartRangeClip = options.get('chartRangeClip'),
+                stackMin = Infinity,
+                stackMax = -Infinity,
+                isStackString, groupMin, groupMax, stackRanges,
+                numValues, i, vlen, range, zeroAxis, xaxisOffset, min, max, clipMin, clipMax,
+                stacked, vlist, j, slen, svals, val, yoffset, yMaxCalc, canvasHeightEf;
+            bar._super.init.call(this, el, values, options, width, height);
+
+            // scan values to determine whether to stack bars
+            for (i = 0, vlen = values.length; i < vlen; i++) {
+                val = values[i];
+                isStackString = typeof(val) === 'string' && val.indexOf(':') > -1;
+                if (isStackString || $.isArray(val)) {
+                    stacked = true;
+                    if (isStackString) {
+                        val = values[i] = normalizeValues(val.split(':'));
+                    }
+                    val = remove(val, null); // min/max will treat null as zero
+                    groupMin = Math.min.apply(Math, val);
+                    groupMax = Math.max.apply(Math, val);
+                    if (groupMin < stackMin) {
+                        stackMin = groupMin;
+                    }
+                    if (groupMax > stackMax) {
+                        stackMax = groupMax;
+                    }
+                }
+            }
+
+            this.stacked = stacked;
+            this.regionShapes = {};
+            this.barWidth = barWidth;
+            this.barSpacing = barSpacing;
+            this.totalBarWidth = barWidth + barSpacing;
+            this.width = width = (values.length * barWidth) + ((values.length - 1) * barSpacing);
+
+            this.initTarget();
+
+            if (chartRangeClip) {
+                clipMin = chartRangeMin === undefined ? -Infinity : chartRangeMin;
+                clipMax = chartRangeMax === undefined ? Infinity : chartRangeMax;
+            }
+
+            numValues = [];
+            stackRanges = stacked ? [] : numValues;
+            var stackTotals = [];
+            var stackRangesNeg = [];
+            for (i = 0, vlen = values.length; i < vlen; i++) {
+                if (stacked) {
+                    vlist = values[i];
+                    values[i] = svals = [];
+                    stackTotals[i] = 0;
+                    stackRanges[i] = stackRangesNeg[i] = 0;
+                    for (j = 0, slen = vlist.length; j < slen; j++) {
+                        val = svals[j] = chartRangeClip ? clipval(vlist[j], clipMin, clipMax) : vlist[j];
+                        if (val !== null) {
+                            if (val > 0) {
+                                stackTotals[i] += val;
+                            }
+                            if (stackMin < 0 && stackMax > 0) {
+                                if (val < 0) {
+                                    stackRangesNeg[i] += Math.abs(val);
+                                } else {
+                                    stackRanges[i] += val;
+                                }
+                            } else {
+                                stackRanges[i] += Math.abs(val - (val < 0 ? stackMax : stackMin));
+                            }
+                            numValues.push(val);
+                        }
+                    }
+                } else {
+                    val = chartRangeClip ? clipval(values[i], clipMin, clipMax) : values[i];
+                    val = values[i] = normalizeValue(val);
+                    if (val !== null) {
+                        numValues.push(val);
+                    }
+                }
+            }
+            this.max = max = Math.max.apply(Math, numValues);
+            this.min = min = Math.min.apply(Math, numValues);
+            this.stackMax = stackMax = stacked ? Math.max.apply(Math, stackTotals) : max;
+            this.stackMin = stackMin = stacked ? Math.min.apply(Math, numValues) : min;
+
+            if (options.get('chartRangeMin') !== undefined && (options.get('chartRangeClip') || options.get('chartRangeMin') < min)) {
+                min = options.get('chartRangeMin');
+            }
+            if (options.get('chartRangeMax') !== undefined && (options.get('chartRangeClip') || options.get('chartRangeMax') > max)) {
+                max = options.get('chartRangeMax');
+            }
+
+            this.zeroAxis = zeroAxis = options.get('zeroAxis', true);
+            if (min <= 0 && max >= 0 && zeroAxis) {
+                xaxisOffset = 0;
+            } else if (zeroAxis == false) {
+                xaxisOffset = min;
+            } else if (min > 0) {
+                xaxisOffset = min;
+            } else {
+                xaxisOffset = max;
+            }
+            this.xaxisOffset = xaxisOffset;
+
+            range = stacked ? (Math.max.apply(Math, stackRanges) + Math.max.apply(Math, stackRangesNeg)) : max - min;
+
+            // as we plot zero/min values a single pixel line, we add a pixel to all other
+            // values - Reduce the effective canvas size to suit
+            this.canvasHeightEf = (zeroAxis && min < 0) ? this.canvasHeight - 2 : this.canvasHeight - 1;
+
+            if (min < xaxisOffset) {
+                yMaxCalc = (stacked && max >= 0) ? stackMax : max;
+                yoffset = (yMaxCalc - xaxisOffset) / range * this.canvasHeight;
+                if (yoffset !== Math.ceil(yoffset)) {
+                    this.canvasHeightEf -= 2;
+                    yoffset = Math.ceil(yoffset);
+                }
+            } else {
+                yoffset = this.canvasHeight;
+            }
+            this.yoffset = yoffset;
+
+            if ($.isArray(options.get('colorMap'))) {
+                this.colorMapByIndex = options.get('colorMap');
+                this.colorMapByValue = null;
+            } else {
+                this.colorMapByIndex = null;
+                this.colorMapByValue = options.get('colorMap');
+                if (this.colorMapByValue && this.colorMapByValue.get === undefined) {
+                    this.colorMapByValue = new RangeMap(this.colorMapByValue);
+                }
+            }
+
+            this.range = range;
+        },
+
+        getRegion: function (el, x, y) {
+            var result = Math.floor(x / this.totalBarWidth);
+            return (result < 0 || result >= this.values.length) ? undefined : result;
+        },
+
+        getCurrentRegionFields: function () {
+            var currentRegion = this.currentRegion,
+                values = ensureArray(this.values[currentRegion]),
+                result = [],
+                value, i;
+            for (i = values.length; i--;) {
+                value = values[i];
+                result.push({
+                    isNull: value === null,
+                    value: value,
+                    color: this.calcColor(i, value, currentRegion),
+                    offset: currentRegion
+                });
+            }
+            return result;
+        },
+
+        calcColor: function (stacknum, value, valuenum) {
+            var colorMapByIndex = this.colorMapByIndex,
+                colorMapByValue = this.colorMapByValue,
+                options = this.options,
+                color, newColor;
+            if (this.stacked) {
+                color = options.get('stackedBarColor');
+            } else {
+                color = (value < 0) ? options.get('negBarColor') : options.get('barColor');
+            }
+            if (value === 0 && options.get('zeroColor') !== undefined) {
+                color = options.get('zeroColor');
+            }
+            if (colorMapByValue && (newColor = colorMapByValue.get(value))) {
+                color = newColor;
+            } else if (colorMapByIndex && colorMapByIndex.length > valuenum) {
+                color = colorMapByIndex[valuenum];
+            }
+            return $.isArray(color) ? color[stacknum % color.length] : color;
+        },
+
+        /**
+         * Render bar(s) for a region
+         */
+        renderRegion: function (valuenum, highlight) {
+            var vals = this.values[valuenum],
+                options = this.options,
+                xaxisOffset = this.xaxisOffset,
+                result = [],
+                range = this.range,
+                stacked = this.stacked,
+                target = this.target,
+                x = valuenum * this.totalBarWidth,
+                canvasHeightEf = this.canvasHeightEf,
+                yoffset = this.yoffset,
+                y, height, color, isNull, yoffsetNeg, i, valcount, val, minPlotted, allMin;
+
+            vals = $.isArray(vals) ? vals : [vals];
+            valcount = vals.length;
+            val = vals[0];
+            isNull = all(null, vals);
+            allMin = all(xaxisOffset, vals, true);
+
+            if (isNull) {
+                if (options.get('nullColor')) {
+                    color = highlight ? options.get('nullColor') : this.calcHighlightColor(options.get('nullColor'), options);
+                    y = (yoffset > 0) ? yoffset - 1 : yoffset;
+                    return target.drawRect(x, y, this.barWidth - 1, 0, color, color);
+                } else {
+                    return undefined;
+                }
+            }
+            yoffsetNeg = yoffset;
+            for (i = 0; i < valcount; i++) {
+                val = vals[i];
+
+                if (stacked && val === xaxisOffset) {
+                    if (!allMin || minPlotted) {
+                        continue;
+                    }
+                    minPlotted = true;
+                }
+
+                if (range > 0) {
+                    height = Math.floor(canvasHeightEf * ((Math.abs(val - xaxisOffset) / range))) + 1;
+                } else {
+                    height = 1;
+                }
+                if (val < xaxisOffset || (val === xaxisOffset && yoffset === 0)) {
+                    y = yoffsetNeg;
+                    yoffsetNeg += height;
+                } else {
+                    y = yoffset - height;
+                    yoffset -= height;
+                }
+                color = this.calcColor(i, val, valuenum);
+                if (highlight) {
+                    color = this.calcHighlightColor(color, options);
+                }
+                result.push(target.drawRect(x, y, this.barWidth - 1, height - 1, color, color));
+            }
+            if (result.length === 1) {
+                return result[0];
+            }
+            return result;
+        }
+    });
+
+    /**
+     * Tristate charts
+     */
+    $.fn.sparkline.tristate = tristate = createClass($.fn.sparkline._base, barHighlightMixin, {
+        type: 'tristate',
+
+        init: function (el, values, options, width, height) {
+            var barWidth = parseInt(options.get('barWidth'), 10),
+                barSpacing = parseInt(options.get('barSpacing'), 10);
+            tristate._super.init.call(this, el, values, options, width, height);
+
+            this.regionShapes = {};
+            this.barWidth = barWidth;
+            this.barSpacing = barSpacing;
+            this.totalBarWidth = barWidth + barSpacing;
+            this.values = $.map(values, Number);
+            this.width = width = (values.length * barWidth) + ((values.length - 1) * barSpacing);
+
+            if ($.isArray(options.get('colorMap'))) {
+                this.colorMapByIndex = options.get('colorMap');
+                this.colorMapByValue = null;
+            } else {
+                this.colorMapByIndex = null;
+                this.colorMapByValue = options.get('colorMap');
+                if (this.colorMapByValue && this.colorMapByValue.get === undefined) {
+                    this.colorMapByValue = new RangeMap(this.colorMapByValue);
+                }
+            }
+            this.initTarget();
+        },
+
+        getRegion: function (el, x, y) {
+            return Math.floor(x / this.totalBarWidth);
+        },
+
+        getCurrentRegionFields: function () {
+            var currentRegion = this.currentRegion;
+            return {
+                isNull: this.values[currentRegion] === undefined,
+                value: this.values[currentRegion],
+                color: this.calcColor(this.values[currentRegion], currentRegion),
+                offset: currentRegion
+            };
+        },
+
+        calcColor: function (value, valuenum) {
+            var values = this.values,
+                options = this.options,
+                colorMapByIndex = this.colorMapByIndex,
+                colorMapByValue = this.colorMapByValue,
+                color, newColor;
+
+            if (colorMapByValue && (newColor = colorMapByValue.get(value))) {
+                color = newColor;
+            } else if (colorMapByIndex && colorMapByIndex.length > valuenum) {
+                color = colorMapByIndex[valuenum];
+            } else if (values[valuenum] < 0) {
+                color = options.get('negBarColor');
+            } else if (values[valuenum] > 0) {
+                color = options.get('posBarColor');
+            } else {
+                color = options.get('zeroBarColor');
+            }
+            return color;
+        },
+
+        renderRegion: function (valuenum, highlight) {
+            var values = this.values,
+                options = this.options,
+                target = this.target,
+                canvasHeight, height, halfHeight,
+                x, y, color;
+
+            canvasHeight = target.pixelHeight;
+            halfHeight = Math.round(canvasHeight / 2);
+
+            x = valuenum * this.totalBarWidth;
+            if (values[valuenum] < 0) {
+                y = halfHeight;
+                height = halfHeight - 1;
+            } else if (values[valuenum] > 0) {
+                y = 0;
+                height = halfHeight - 1;
+            } else {
+                y = halfHeight - 1;
+                height = 2;
+            }
+            color = this.calcColor(values[valuenum], valuenum);
+            if (color === null) {
+                return;
+            }
+            if (highlight) {
+                color = this.calcHighlightColor(color, options);
+            }
+            return target.drawRect(x, y, this.barWidth - 1, height - 1, color, color);
+        }
+    });
+
+    /**
+     * Discrete charts
+     */
+    $.fn.sparkline.discrete = discrete = createClass($.fn.sparkline._base, barHighlightMixin, {
+        type: 'discrete',
+
+        init: function (el, values, options, width, height) {
+            discrete._super.init.call(this, el, values, options, width, height);
+
+            this.regionShapes = {};
+            this.values = values = $.map(values, Number);
+            this.min = Math.min.apply(Math, values);
+            this.max = Math.max.apply(Math, values);
+            this.range = this.max - this.min;
+            this.width = width = options.get('width') === 'auto' ? values.length * 2 : this.width;
+            this.interval = Math.floor(width / values.length);
+            this.itemWidth = width / values.length;
+            if (options.get('chartRangeMin') !== undefined && (options.get('chartRangeClip') || options.get('chartRangeMin') < this.min)) {
+                this.min = options.get('chartRangeMin');
+            }
+            if (options.get('chartRangeMax') !== undefined && (options.get('chartRangeClip') || options.get('chartRangeMax') > this.max)) {
+                this.max = options.get('chartRangeMax');
+            }
+            this.initTarget();
+            if (this.target) {
+                this.lineHeight = options.get('lineHeight') === 'auto' ? Math.round(this.canvasHeight * 0.3) : options.get('lineHeight');
+            }
+        },
+
+        getRegion: function (el, x, y) {
+            return Math.floor(x / this.itemWidth);
+        },
+
+        getCurrentRegionFields: function () {
+            var currentRegion = this.currentRegion;
+            return {
+                isNull: this.values[currentRegion] === undefined,
+                value: this.values[currentRegion],
+                offset: currentRegion
+            };
+        },
+
+        renderRegion: function (valuenum, highlight) {
+            var values = this.values,
+                options = this.options,
+                min = this.min,
+                max = this.max,
+                range = this.range,
+                interval = this.interval,
+                target = this.target,
+                canvasHeight = this.canvasHeight,
+                lineHeight = this.lineHeight,
+                pheight = canvasHeight - lineHeight,
+                ytop, val, color, x;
+
+            val = clipval(values[valuenum], min, max);
+            x = valuenum * interval;
+            ytop = Math.round(pheight - pheight * ((val - min) / range));
+            color = (options.get('thresholdColor') && val < options.get('thresholdValue')) ? options.get('thresholdColor') : options.get('lineColor');
+            if (highlight) {
+                color = this.calcHighlightColor(color, options);
+            }
+            return target.drawLine(x, ytop, x, ytop + lineHeight, color);
+        }
+    });
+
+    /**
+     * Bullet charts
+     */
+    $.fn.sparkline.bullet = bullet = createClass($.fn.sparkline._base, {
+        type: 'bullet',
+
+        init: function (el, values, options, width, height) {
+            var min, max, vals;
+            bullet._super.init.call(this, el, values, options, width, height);
+
+            // values: target, performance, range1, range2, range3
+            this.values = values = normalizeValues(values);
+            // target or performance could be null
+            vals = values.slice();
+            vals[0] = vals[0] === null ? vals[2] : vals[0];
+            vals[1] = values[1] === null ? vals[2] : vals[1];
+            min = Math.min.apply(Math, values);
+            max = Math.max.apply(Math, values);
+            if (options.get('base') === undefined) {
+                min = min < 0 ? min : 0;
+            } else {
+                min = options.get('base');
+            }
+            this.min = min;
+            this.max = max;
+            this.range = max - min;
+            this.shapes = {};
+            this.valueShapes = {};
+            this.regiondata = {};
+            this.width = width = options.get('width') === 'auto' ? '4.0em' : width;
+            this.target = this.$el.simpledraw(width, height, options.get('composite'));
+            if (!values.length) {
+                this.disabled = true;
+            }
+            this.initTarget();
+        },
+
+        getRegion: function (el, x, y) {
+            var shapeid = this.target.getShapeAt(el, x, y);
+            return (shapeid !== undefined && this.shapes[shapeid] !== undefined) ? this.shapes[shapeid] : undefined;
+        },
+
+        getCurrentRegionFields: function () {
+            var currentRegion = this.currentRegion;
+            return {
+                fieldkey: currentRegion.substr(0, 1),
+                value: this.values[currentRegion.substr(1)],
+                region: currentRegion
+            };
+        },
+
+        changeHighlight: function (highlight) {
+            var currentRegion = this.currentRegion,
+                shapeid = this.valueShapes[currentRegion],
+                shape;
+            delete this.shapes[shapeid];
+            switch (currentRegion.substr(0, 1)) {
+                case 'r':
+                    shape = this.renderRange(currentRegion.substr(1), highlight);
+                    break;
+                case 'p':
+                    shape = this.renderPerformance(highlight);
+                    break;
+                case 't':
+                    shape = this.renderTarget(highlight);
+                    break;
+            }
+            this.valueShapes[currentRegion] = shape.id;
+            this.shapes[shape.id] = currentRegion;
+            this.target.replaceWithShape(shapeid, shape);
+        },
+
+        renderRange: function (rn, highlight) {
+            var rangeval = this.values[rn],
+                rangewidth = Math.round(this.canvasWidth * ((rangeval - this.min) / this.range)),
+                color = this.options.get('rangeColors')[rn - 2];
+            if (highlight) {
+                color = this.calcHighlightColor(color, this.options);
+            }
+            return this.target.drawRect(0, 0, rangewidth - 1, this.canvasHeight - 1, color, color);
+        },
+
+        renderPerformance: function (highlight) {
+            var perfval = this.values[1],
+                perfwidth = Math.round(this.canvasWidth * ((perfval - this.min) / this.range)),
+                color = this.options.get('performanceColor');
+            if (highlight) {
+                color = this.calcHighlightColor(color, this.options);
+            }
+            return this.target.drawRect(0, Math.round(this.canvasHeight * 0.3), perfwidth - 1,
+                Math.round(this.canvasHeight * 0.4) - 1, color, color);
+        },
+
+        renderTarget: function (highlight) {
+            var targetval = this.values[0],
+                x = Math.round(this.canvasWidth * ((targetval - this.min) / this.range) - (this.options.get('targetWidth') / 2)),
+                targettop = Math.round(this.canvasHeight * 0.10),
+                targetheight = this.canvasHeight - (targettop * 2),
+                color = this.options.get('targetColor');
+            if (highlight) {
+                color = this.calcHighlightColor(color, this.options);
+            }
+            return this.target.drawRect(x, targettop, this.options.get('targetWidth') - 1, targetheight - 1, color, color);
+        },
+
+        render: function () {
+            var vlen = this.values.length,
+                target = this.target,
+                i, shape;
+            if (!bullet._super.render.call(this)) {
+                return;
+            }
+            for (i = 2; i < vlen; i++) {
+                shape = this.renderRange(i).append();
+                this.shapes[shape.id] = 'r' + i;
+                this.valueShapes['r' + i] = shape.id;
+            }
+            if (this.values[1] !== null) {
+                shape = this.renderPerformance().append();
+                this.shapes[shape.id] = 'p1';
+                this.valueShapes.p1 = shape.id;
+            }
+            if (this.values[0] !== null) {
+                shape = this.renderTarget().append();
+                this.shapes[shape.id] = 't0';
+                this.valueShapes.t0 = shape.id;
+            }
+            target.render();
+        }
+    });
+
+    /**
+     * Pie charts
+     */
+    $.fn.sparkline.pie = pie = createClass($.fn.sparkline._base, {
+        type: 'pie',
+
+        init: function (el, values, options, width, height) {
+            var total = 0, i;
+
+            pie._super.init.call(this, el, values, options, width, height);
+
+            this.shapes = {}; // map shape ids to value offsets
+            this.valueShapes = {}; // maps value offsets to shape ids
+            this.values = values = $.map(values, Number);
+
+            if (options.get('width') === 'auto') {
+                this.width = this.height;
+            }
+
+            if (values.length > 0) {
+                for (i = values.length; i--;) {
+                    total += values[i];
+                }
+            }
+            this.total = total;
+            this.initTarget();
+            this.radius = Math.floor(Math.min(this.canvasWidth, this.canvasHeight) / 2);
+        },
+
+        getRegion: function (el, x, y) {
+            var shapeid = this.target.getShapeAt(el, x, y);
+            return (shapeid !== undefined && this.shapes[shapeid] !== undefined) ? this.shapes[shapeid] : undefined;
+        },
+
+        getCurrentRegionFields: function () {
+            var currentRegion = this.currentRegion;
+            return {
+                isNull: this.values[currentRegion] === undefined,
+                value: this.values[currentRegion],
+                percent: this.values[currentRegion] / this.total * 100,
+                color: this.options.get('sliceColors')[currentRegion % this.options.get('sliceColors').length],
+                offset: currentRegion
+            };
+        },
+
+        changeHighlight: function (highlight) {
+            var currentRegion = this.currentRegion,
+                 newslice = this.renderSlice(currentRegion, highlight),
+                 shapeid = this.valueShapes[currentRegion];
+            delete this.shapes[shapeid];
+            this.target.replaceWithShape(shapeid, newslice);
+            this.valueShapes[currentRegion] = newslice.id;
+            this.shapes[newslice.id] = currentRegion;
+        },
+
+        renderSlice: function (valuenum, highlight) {
+            var target = this.target,
+                options = this.options,
+                radius = this.radius,
+                borderWidth = options.get('borderWidth'),
+                offset = options.get('offset'),
+                circle = 2 * Math.PI,
+                values = this.values,
+                total = this.total,
+                next = offset ? (2*Math.PI)*(offset/360) : 0,
+                start, end, i, vlen, color;
+
+            vlen = values.length;
+            for (i = 0; i < vlen; i++) {
+                start = next;
+                end = next;
+                if (total > 0) {  // avoid divide by zero
+                    end = next + (circle * (values[i] / total));
+                }
+                if (valuenum === i) {
+                    color = options.get('sliceColors')[i % options.get('sliceColors').length];
+                    if (highlight) {
+                        color = this.calcHighlightColor(color, options);
+                    }
+
+                    return target.drawPieSlice(radius, radius, radius - borderWidth, start, end, undefined, color);
+                }
+                next = end;
+            }
+        },
+
+        render: function () {
+            var target = this.target,
+                values = this.values,
+                options = this.options,
+                radius = this.radius,
+                borderWidth = options.get('borderWidth'),
+                shape, i;
+
+            if (!pie._super.render.call(this)) {
+                return;
+            }
+            if (borderWidth) {
+                target.drawCircle(radius, radius, Math.floor(radius - (borderWidth / 2)),
+                    options.get('borderColor'), undefined, borderWidth).append();
+            }
+            for (i = values.length; i--;) {
+                if (values[i]) { // don't render zero values
+                    shape = this.renderSlice(i).append();
+                    this.valueShapes[i] = shape.id; // store just the shapeid
+                    this.shapes[shape.id] = i;
+                }
+            }
+            target.render();
+        }
+    });
+
+    /**
+     * Box plots
+     */
+    $.fn.sparkline.box = box = createClass($.fn.sparkline._base, {
+        type: 'box',
+
+        init: function (el, values, options, width, height) {
+            box._super.init.call(this, el, values, options, width, height);
+            this.values = $.map(values, Number);
+            this.width = options.get('width') === 'auto' ? '4.0em' : width;
+            this.initTarget();
+            if (!this.values.length) {
+                this.disabled = 1;
+            }
+        },
+
+        /**
+         * Simulate a single region
+         */
+        getRegion: function () {
+            return 1;
+        },
+
+        getCurrentRegionFields: function () {
+            var result = [
+                { field: 'lq', value: this.quartiles[0] },
+                { field: 'med', value: this.quartiles[1] },
+                { field: 'uq', value: this.quartiles[2] }
+            ];
+            if (this.loutlier !== undefined) {
+                result.push({ field: 'lo', value: this.loutlier});
+            }
+            if (this.routlier !== undefined) {
+                result.push({ field: 'ro', value: this.routlier});
+            }
+            if (this.lwhisker !== undefined) {
+                result.push({ field: 'lw', value: this.lwhisker});
+            }
+            if (this.rwhisker !== undefined) {
+                result.push({ field: 'rw', value: this.rwhisker});
+            }
+            return result;
+        },
+
+        render: function () {
+            var target = this.target,
+                values = this.values,
+                vlen = values.length,
+                options = this.options,
+                canvasWidth = this.canvasWidth,
+                canvasHeight = this.canvasHeight,
+                minValue = options.get('chartRangeMin') === undefined ? Math.min.apply(Math, values) : options.get('chartRangeMin'),
+                maxValue = options.get('chartRangeMax') === undefined ? Math.max.apply(Math, values) : options.get('chartRangeMax'),
+                canvasLeft = 0,
+                lwhisker, loutlier, iqr, q1, q2, q3, rwhisker, routlier, i,
+                size, unitSize;
+
+            if (!box._super.render.call(this)) {
+                return;
+            }
+
+            if (options.get('raw')) {
+                if (options.get('showOutliers') && values.length > 5) {
+                    loutlier = values[0];
+                    lwhisker = values[1];
+                    q1 = values[2];
+                    q2 = values[3];
+                    q3 = values[4];
+                    rwhisker = values[5];
+                    routlier = values[6];
+                } else {
+                    lwhisker = values[0];
+                    q1 = values[1];
+                    q2 = values[2];
+                    q3 = values[3];
+                    rwhisker = values[4];
+                }
+            } else {
+                values.sort(function (a, b) { return a - b; });
+                q1 = quartile(values, 1);
+                q2 = quartile(values, 2);
+                q3 = quartile(values, 3);
+                iqr = q3 - q1;
+                if (options.get('showOutliers')) {
+                    lwhisker = rwhisker = undefined;
+                    for (i = 0; i < vlen; i++) {
+                        if (lwhisker === undefined && values[i] > q1 - (iqr * options.get('outlierIQR'))) {
+                            lwhisker = values[i];
+                        }
+                        if (values[i] < q3 + (iqr * options.get('outlierIQR'))) {
+                            rwhisker = values[i];
+                        }
+                    }
+                    loutlier = values[0];
+                    routlier = values[vlen - 1];
+                } else {
+                    lwhisker = values[0];
+                    rwhisker = values[vlen - 1];
+                }
+            }
+            this.quartiles = [q1, q2, q3];
+            this.lwhisker = lwhisker;
+            this.rwhisker = rwhisker;
+            this.loutlier = loutlier;
+            this.routlier = routlier;
+
+            unitSize = canvasWidth / (maxValue - minValue + 1);
+            if (options.get('showOutliers')) {
+                canvasLeft = Math.ceil(options.get('spotRadius'));
+                canvasWidth -= 2 * Math.ceil(options.get('spotRadius'));
+                unitSize = canvasWidth / (maxValue - minValue + 1);
+                if (loutlier < lwhisker) {
+                    target.drawCircle((loutlier - minValue) * unitSize + canvasLeft,
+                        canvasHeight / 2,
+                        options.get('spotRadius'),
+                        options.get('outlierLineColor'),
+                        options.get('outlierFillColor')).append();
+                }
+                if (routlier > rwhisker) {
+                    target.drawCircle((routlier - minValue) * unitSize + canvasLeft,
+                        canvasHeight / 2,
+                        options.get('spotRadius'),
+                        options.get('outlierLineColor'),
+                        options.get('outlierFillColor')).append();
+                }
+            }
+
+            // box
+            target.drawRect(
+                Math.round((q1 - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight * 0.1),
+                Math.round((q3 - q1) * unitSize),
+                Math.round(canvasHeight * 0.8),
+                options.get('boxLineColor'),
+                options.get('boxFillColor')).append();
+            // left whisker
+            target.drawLine(
+                Math.round((lwhisker - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight / 2),
+                Math.round((q1 - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight / 2),
+                options.get('lineColor')).append();
+            target.drawLine(
+                Math.round((lwhisker - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight / 4),
+                Math.round((lwhisker - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight - canvasHeight / 4),
+                options.get('whiskerColor')).append();
+            // right whisker
+            target.drawLine(Math.round((rwhisker - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight / 2),
+                Math.round((q3 - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight / 2),
+                options.get('lineColor')).append();
+            target.drawLine(
+                Math.round((rwhisker - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight / 4),
+                Math.round((rwhisker - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight - canvasHeight / 4),
+                options.get('whiskerColor')).append();
+            // median line
+            target.drawLine(
+                Math.round((q2 - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight * 0.1),
+                Math.round((q2 - minValue) * unitSize + canvasLeft),
+                Math.round(canvasHeight * 0.9),
+                options.get('medianColor')).append();
+            if (options.get('target')) {
+                size = Math.ceil(options.get('spotRadius'));
+                target.drawLine(
+                    Math.round((options.get('target') - minValue) * unitSize + canvasLeft),
+                    Math.round((canvasHeight / 2) - size),
+                    Math.round((options.get('target') - minValue) * unitSize + canvasLeft),
+                    Math.round((canvasHeight / 2) + size),
+                    options.get('targetColor')).append();
+                target.drawLine(
+                    Math.round((options.get('target') - minValue) * unitSize + canvasLeft - size),
+                    Math.round(canvasHeight / 2),
+                    Math.round((options.get('target') - minValue) * unitSize + canvasLeft + size),
+                    Math.round(canvasHeight / 2),
+                    options.get('targetColor')).append();
+            }
+            target.render();
+        }
+    });
+
+    // Setup a very simple "virtual canvas" to make drawing the few shapes we need easier
+    // This is accessible as $(foo).simpledraw()
+
+    VShape = createClass({
+        init: function (target, id, type, args) {
+            this.target = target;
+            this.id = id;
+            this.type = type;
+            this.args = args;
+        },
+        append: function () {
+            this.target.appendShape(this);
+            return this;
+        }
+    });
+
+    VCanvas_base = createClass({
+        _pxregex: /(\d+)(px)?\s*$/i,
+
+        init: function (width, height, target) {
+            if (!width) {
+                return;
+            }
+            this.width = width;
+            this.height = height;
+            this.target = target;
+            this.lastShapeId = null;
+            if (target[0]) {
+                target = target[0];
+            }
+            $.data(target, '_jqs_vcanvas', this);
+        },
+
+        drawLine: function (x1, y1, x2, y2, lineColor, lineWidth) {
+            return this.drawShape([[x1, y1], [x2, y2]], lineColor, lineWidth);
+        },
+
+        drawShape: function (path, lineColor, fillColor, lineWidth) {
+            return this._genShape('Shape', [path, lineColor, fillColor, lineWidth]);
+        },
+
+        drawCircle: function (x, y, radius, lineColor, fillColor, lineWidth) {
+            return this._genShape('Circle', [x, y, radius, lineColor, fillColor, lineWidth]);
+        },
+
+        drawPieSlice: function (x, y, radius, startAngle, endAngle, lineColor, fillColor) {
+            return this._genShape('PieSlice', [x, y, radius, startAngle, endAngle, lineColor, fillColor]);
+        },
+
+        drawRect: function (x, y, width, height, lineColor, fillColor) {
+            return this._genShape('Rect', [x, y, width, height, lineColor, fillColor]);
+        },
+
+        getElement: function () {
+            return this.canvas;
+        },
+
+        /**
+         * Return the most recently inserted shape id
+         */
+        getLastShapeId: function () {
+            return this.lastShapeId;
+        },
+
+        /**
+         * Clear and reset the canvas
+         */
+        reset: function () {
+            alert('reset not implemented');
+        },
+
+        _insert: function (el, target) {
+            $(target).html(el);
+        },
+
+        /**
+         * Calculate the pixel dimensions of the canvas
+         */
+        _calculatePixelDims: function (width, height, canvas) {
+            // XXX This should probably be a configurable option
+            var match;
+            match = this._pxregex.exec(height);
+            if (match) {
+                this.pixelHeight = match[1];
+            } else {
+                this.pixelHeight = $(canvas).height();
+            }
+            match = this._pxregex.exec(width);
+            if (match) {
+                this.pixelWidth = match[1];
+            } else {
+                this.pixelWidth = $(canvas).width();
+            }
+        },
+
+        /**
+         * Generate a shape object and id for later rendering
+         */
+        _genShape: function (shapetype, shapeargs) {
+            var id = shapeCount++;
+            shapeargs.unshift(id);
+            return new VShape(this, id, shapetype, shapeargs);
+        },
+
+        /**
+         * Add a shape to the end of the render queue
+         */
+        appendShape: function (shape) {
+            alert('appendShape not implemented');
+        },
+
+        /**
+         * Replace one shape with another
+         */
+        replaceWithShape: function (shapeid, shape) {
+            alert('replaceWithShape not implemented');
+        },
+
+        /**
+         * Insert one shape after another in the render queue
+         */
+        insertAfterShape: function (shapeid, shape) {
+            alert('insertAfterShape not implemented');
+        },
+
+        /**
+         * Remove a shape from the queue
+         */
+        removeShapeId: function (shapeid) {
+            alert('removeShapeId not implemented');
+        },
+
+        /**
+         * Find a shape at the specified x/y co-ordinates
+         */
+        getShapeAt: function (el, x, y) {
+            alert('getShapeAt not implemented');
+        },
+
+        /**
+         * Render all queued shapes onto the canvas
+         */
+        render: function () {
+            alert('render not implemented');
+        }
+    });
+
+    VCanvas_canvas = createClass(VCanvas_base, {
+        init: function (width, height, target, interact) {
+            VCanvas_canvas._super.init.call(this, width, height, target);
+            this.canvas = document.createElement('canvas');
+            if (target[0]) {
+                target = target[0];
+            }
+            $.data(target, '_jqs_vcanvas', this);
+            $(this.canvas).css({ display: 'inline-block', width: width, height: height, verticalAlign: 'top' });
+            this._insert(this.canvas, target);
+            this._calculatePixelDims(width, height, this.canvas);
+            this.canvas.width = this.pixelWidth;
+            this.canvas.height = this.pixelHeight;
+            this.interact = interact;
+            this.shapes = {};
+            this.shapeseq = [];
+            this.currentTargetShapeId = undefined;
+            $(this.canvas).css({width: this.pixelWidth, height: this.pixelHeight});
+        },
+
+        _getContext: function (lineColor, fillColor, lineWidth) {
+            var context = this.canvas.getContext('2d');
+            if (lineColor !== undefined) {
+                context.strokeStyle = lineColor;
+            }
+            context.lineWidth = lineWidth === undefined ? 1 : lineWidth;
+            if (fillColor !== undefined) {
+                context.fillStyle = fillColor;
+            }
+            return context;
+        },
+
+        reset: function () {
+            var context = this._getContext();
+            context.clearRect(0, 0, this.pixelWidth, this.pixelHeight);
+            this.shapes = {};
+            this.shapeseq = [];
+            this.currentTargetShapeId = undefined;
+        },
+
+        _drawShape: function (shapeid, path, lineColor, fillColor, lineWidth) {
+            var context = this._getContext(lineColor, fillColor, lineWidth),
+                i, plen;
+            context.beginPath();
+            context.moveTo(path[0][0] + 0.5, path[0][1] + 0.5);
+            for (i = 1, plen = path.length; i < plen; i++) {
+                context.lineTo(path[i][0] + 0.5, path[i][1] + 0.5); // the 0.5 offset gives us crisp pixel-width lines
+            }
+            if (lineColor !== undefined) {
+                context.stroke();
+            }
+            if (fillColor !== undefined) {
+                context.fill();
+            }
+            if (this.targetX !== undefined && this.targetY !== undefined &&
+                context.isPointInPath(this.targetX, this.targetY)) {
+                this.currentTargetShapeId = shapeid;
+            }
+        },
+
+        _drawCircle: function (shapeid, x, y, radius, lineColor, fillColor, lineWidth) {
+            var context = this._getContext(lineColor, fillColor, lineWidth);
+            context.beginPath();
+            context.arc(x, y, radius, 0, 2 * Math.PI, false);
+            if (this.targetX !== undefined && this.targetY !== undefined &&
+                context.isPointInPath(this.targetX, this.targetY)) {
+                this.currentTargetShapeId = shapeid;
+            }
+            if (lineColor !== undefined) {
+                context.stroke();
+            }
+            if (fillColor !== undefined) {
+                context.fill();
+            }
+        },
+
+        _drawPieSlice: function (shapeid, x, y, radius, startAngle, endAngle, lineColor, fillColor) {
+            var context = this._getContext(lineColor, fillColor);
+            context.beginPath();
+            context.moveTo(x, y);
+            context.arc(x, y, radius, startAngle, endAngle, false);
+            context.lineTo(x, y);
+            context.closePath();
+            if (lineColor !== undefined) {
+                context.stroke();
+            }
+            if (fillColor) {
+                context.fill();
+            }
+            if (this.targetX !== undefined && this.targetY !== undefined &&
+                context.isPointInPath(this.targetX, this.targetY)) {
+                this.currentTargetShapeId = shapeid;
+            }
+        },
+
+        _drawRect: function (shapeid, x, y, width, height, lineColor, fillColor) {
+            return this._drawShape(shapeid, [[x, y], [x + width, y], [x + width, y + height], [x, y + height], [x, y]], lineColor, fillColor);
+        },
+
+        appendShape: function (shape) {
+            this.shapes[shape.id] = shape;
+            this.shapeseq.push(shape.id);
+            this.lastShapeId = shape.id;
+            return shape.id;
+        },
+
+        replaceWithShape: function (shapeid, shape) {
+            var shapeseq = this.shapeseq,
+                i;
+            this.shapes[shape.id] = shape;
+            for (i = shapeseq.length; i--;) {
+                if (shapeseq[i] == shapeid) {
+                    shapeseq[i] = shape.id;
+                }
+            }
+            delete this.shapes[shapeid];
+        },
+
+        replaceWithShapes: function (shapeids, shapes) {
+            var shapeseq = this.shapeseq,
+                shapemap = {},
+                sid, i, first;
+
+            for (i = shapeids.length; i--;) {
+                shapemap[shapeids[i]] = true;
+            }
+            for (i = shapeseq.length; i--;) {
+                sid = shapeseq[i];
+                if (shapemap[sid]) {
+                    shapeseq.splice(i, 1);
+                    delete this.shapes[sid];
+                    first = i;
+                }
+            }
+            for (i = shapes.length; i--;) {
+                shapeseq.splice(first, 0, shapes[i].id);
+                this.shapes[shapes[i].id] = shapes[i];
+            }
+
+        },
+
+        insertAfterShape: function (shapeid, shape) {
+            var shapeseq = this.shapeseq,
+                i;
+            for (i = shapeseq.length; i--;) {
+                if (shapeseq[i] === shapeid) {
+                    shapeseq.splice(i + 1, 0, shape.id);
+                    this.shapes[shape.id] = shape;
+                    return;
+                }
+            }
+        },
+
+        removeShapeId: function (shapeid) {
+            var shapeseq = this.shapeseq,
+                i;
+            for (i = shapeseq.length; i--;) {
+                if (shapeseq[i] === shapeid) {
+                    shapeseq.splice(i, 1);
+                    break;
+                }
+            }
+            delete this.shapes[shapeid];
+        },
+
+        getShapeAt: function (el, x, y) {
+            this.targetX = x;
+            this.targetY = y;
+            this.render();
+            return this.currentTargetShapeId;
+        },
+
+        render: function () {
+            var shapeseq = this.shapeseq,
+                shapes = this.shapes,
+                shapeCount = shapeseq.length,
+                context = this._getContext(),
+                shapeid, shape, i;
+            context.clearRect(0, 0, this.pixelWidth, this.pixelHeight);
+            for (i = 0; i < shapeCount; i++) {
+                shapeid = shapeseq[i];
+                shape = shapes[shapeid];
+                this['_draw' + shape.type].apply(this, shape.args);
+            }
+            if (!this.interact) {
+                // not interactive so no need to keep the shapes array
+                this.shapes = {};
+                this.shapeseq = [];
+            }
+        }
+
+    });
+
+    VCanvas_vml = createClass(VCanvas_base, {
+        init: function (width, height, target) {
+            var groupel;
+            VCanvas_vml._super.init.call(this, width, height, target);
+            if (target[0]) {
+                target = target[0];
+            }
+            $.data(target, '_jqs_vcanvas', this);
+            this.canvas = document.createElement('span');
+            $(this.canvas).css({ display: 'inline-block', position: 'relative', overflow: 'hidden', width: width, height: height, margin: '0px', padding: '0px', verticalAlign: 'top'});
+            this._insert(this.canvas, target);
+            this._calculatePixelDims(width, height, this.canvas);
+            this.canvas.width = this.pixelWidth;
+            this.canvas.height = this.pixelHeight;
+            groupel = '<v:group coordorigin="0 0" coordsize="' + this.pixelWidth + ' ' + this.pixelHeight + '"' +
+                    ' style="position:absolute;top:0;left:0;width:' + this.pixelWidth + 'px;height=' + this.pixelHeight + 'px;"></v:group>';
+            this.canvas.insertAdjacentHTML('beforeEnd', groupel);
+            this.group = $(this.canvas).children()[0];
+            this.rendered = false;
+            this.prerender = '';
+        },
+
+        _drawShape: function (shapeid, path, lineColor, fillColor, lineWidth) {
+            var vpath = [],
+                initial, stroke, fill, closed, vel, plen, i;
+            for (i = 0, plen = path.length; i < plen; i++) {
+                vpath[i] = '' + (path[i][0]) + ',' + (path[i][1]);
+            }
+            initial = vpath.splice(0, 1);
+            lineWidth = lineWidth === undefined ? 1 : lineWidth;
+            stroke = lineColor === undefined ? ' stroked="false" ' : ' strokeWeight="' + lineWidth + 'px" strokeColor="' + lineColor + '" ';
+            fill = fillColor === undefined ? ' filled="false"' : ' fillColor="' + fillColor + '" filled="true" ';
+            closed = vpath[0] === vpath[vpath.length - 1] ? 'x ' : '';
+            vel = '<v:shape coordorigin="0 0" coordsize="' + this.pixelWidth + ' ' + this.pixelHeight + '" ' +
+                 ' id="jqsshape' + shapeid + '" ' +
+                 stroke +
+                 fill +
+                ' style="position:absolute;left:0px;top:0px;height:' + this.pixelHeight + 'px;width:' + this.pixelWidth + 'px;padding:0px;margin:0px;" ' +
+                ' path="m ' + initial + ' l ' + vpath.join(', ') + ' ' + closed + 'e">' +
+                ' </v:shape>';
+            return vel;
+        },
+
+        _drawCircle: function (shapeid, x, y, radius, lineColor, fillColor, lineWidth) {
+            var stroke, fill, vel;
+            x -= radius;
+            y -= radius;
+            stroke = lineColor === undefined ? ' stroked="false" ' : ' strokeWeight="' + lineWidth + 'px" strokeColor="' + lineColor + '" ';
+            fill = fillColor === undefined ? ' filled="false"' : ' fillColor="' + fillColor + '" filled="true" ';
+            vel = '<v:oval ' +
+                 ' id="jqsshape' + shapeid + '" ' +
+                stroke +
+                fill +
+                ' style="position:absolute;top:' + y + 'px; left:' + x + 'px; width:' + (radius * 2) + 'px; height:' + (radius * 2) + 'px"></v:oval>';
+            return vel;
+
+        },
+
+        _drawPieSlice: function (shapeid, x, y, radius, startAngle, endAngle, lineColor, fillColor) {
+            var vpath, startx, starty, endx, endy, stroke, fill, vel;
+            if (startAngle === endAngle) {
+                return '';  // VML seems to have problem when start angle equals end angle.
+            }
+            if ((endAngle - startAngle) === (2 * Math.PI)) {
+                startAngle = 0.0;  // VML seems to have a problem when drawing a full circle that doesn't start 0
+                endAngle = (2 * Math.PI);
+            }
+
+            startx = x + Math.round(Math.cos(startAngle) * radius);
+            starty = y + Math.round(Math.sin(startAngle) * radius);
+            endx = x + Math.round(Math.cos(endAngle) * radius);
+            endy = y + Math.round(Math.sin(endAngle) * radius);
+
+            if (startx === endx && starty === endy) {
+                if ((endAngle - startAngle) < Math.PI) {
+                    // Prevent very small slices from being mistaken as a whole pie
+                    return '';
+                }
+                // essentially going to be the entire circle, so ignore startAngle
+                startx = endx = x + radius;
+                starty = endy = y;
+            }
+
+            if (startx === endx && starty === endy && (endAngle - startAngle) < Math.PI) {
+                return '';
+            }
+
+            vpath = [x - radius, y - radius, x + radius, y + radius, startx, starty, endx, endy];
+            stroke = lineColor === undefined ? ' stroked="false" ' : ' strokeWeight="1px" strokeColor="' + lineColor + '" ';
+            fill = fillColor === undefined ? ' filled="false"' : ' fillColor="' + fillColor + '" filled="true" ';
+            vel = '<v:shape coordorigin="0 0" coordsize="' + this.pixelWidth + ' ' + this.pixelHeight + '" ' +
+                 ' id="jqsshape' + shapeid + '" ' +
+                 stroke +
+                 fill +
+                ' style="position:absolute;left:0px;top:0px;height:' + this.pixelHeight + 'px;width:' + this.pixelWidth + 'px;padding:0px;margin:0px;" ' +
+                ' path="m ' + x + ',' + y + ' wa ' + vpath.join(', ') + ' x e">' +
+                ' </v:shape>';
+            return vel;
+        },
+
+        _drawRect: function (shapeid, x, y, width, height, lineColor, fillColor) {
+            return this._drawShape(shapeid, [[x, y], [x, y + height], [x + width, y + height], [x + width, y], [x, y]], lineColor, fillColor);
+        },
+
+        reset: function () {
+            this.group.innerHTML = '';
+        },
+
+        appendShape: function (shape) {
+            var vel = this['_draw' + shape.type].apply(this, shape.args);
+            if (this.rendered) {
+                this.group.insertAdjacentHTML('beforeEnd', vel);
+            } else {
+                this.prerender += vel;
+            }
+            this.lastShapeId = shape.id;
+            return shape.id;
+        },
+
+        replaceWithShape: function (shapeid, shape) {
+            var existing = $('#jqsshape' + shapeid),
+                vel = this['_draw' + shape.type].apply(this, shape.args);
+            existing[0].outerHTML = vel;
+        },
+
+        replaceWithShapes: function (shapeids, shapes) {
+            // replace the first shapeid with all the new shapes then toast the remaining old shapes
+            var existing = $('#jqsshape' + shapeids[0]),
+                replace = '',
+                slen = shapes.length,
+                i;
+            for (i = 0; i < slen; i++) {
+                replace += this['_draw' + shapes[i].type].apply(this, shapes[i].args);
+            }
+            existing[0].outerHTML = replace;
+            for (i = 1; i < shapeids.length; i++) {
+                $('#jqsshape' + shapeids[i]).remove();
+            }
+        },
+
+        insertAfterShape: function (shapeid, shape) {
+            var existing = $('#jqsshape' + shapeid),
+                 vel = this['_draw' + shape.type].apply(this, shape.args);
+            existing[0].insertAdjacentHTML('afterEnd', vel);
+        },
+
+        removeShapeId: function (shapeid) {
+            var existing = $('#jqsshape' + shapeid);
+            this.group.removeChild(existing[0]);
+        },
+
+        getShapeAt: function (el, x, y) {
+            var shapeid = el.id.substr(8);
+            return shapeid;
+        },
+
+        render: function () {
+            if (!this.rendered) {
+                // batch the intial render into a single repaint
+                this.group.innerHTML = this.prerender;
+                this.rendered = true;
+            }
+        }
+    });
+
+}))}(document, Math));
index 8df6085..440419f 100644 (file)
@@ -852,6 +852,69 @@ var update_board = function(current_data, display_data) {
        toplay = data['position']['toplay'];
        refutation_lines = data['refutation_lines'];
        update_refutation_lines();
        toplay = data['position']['toplay'];
        refutation_lines = data['refutation_lines'];
        update_refutation_lines();
+
+       // Update the sparkline last, since its size depends on how everything else reflowed.
+       update_sparkline(data);
+}
+
+var update_sparkline = function(data) {
+       if (data && data['score_history']) {
+               var first_move_num = undefined;
+               for (var halfmove_num in data['score_history']) {
+                       halfmove_num = parseInt(halfmove_num);
+                       if (first_move_num === undefined || halfmove_num < first_move_num) {
+                               first_move_num = halfmove_num;
+                       }
+               }
+               if (first_move_num !== undefined) {
+                       var last_move_num = data['position']['move_num'] * 2 - 3;
+                       if (data['position']['toplay'] === 'B') {
+                               ++last_move_num;
+                       }
+
+                       // Possibly truncate some moves if we don't have enough width.
+                       // FIXME: Sometimes width() for #scorecontainer (and by extent,
+                       // #scoresparkcontainer) on Chrome for mobile seems to start off
+                       // at something very small, and then suddenly snap back into place.
+                       // Figure out why.
+                       var max_moves = Math.floor($("#scoresparkcontainer").width() / 5) - 5;
+                       if (last_move_num - first_move_num > max_moves) {
+                               first_move_num = last_move_num - max_moves;
+                       }
+
+                       var min_score = -100;
+                       var max_score = 100;
+                       var last_score = null;
+                       var scores = [];
+                       for (var halfmove_num = first_move_num; halfmove_num <= last_move_num; ++halfmove_num) {
+                               if (data['score_history'][halfmove_num]) {
+                                       var score = data['score_history'][halfmove_num][0];
+                                       if (score < min_score) min_score = score;
+                                       if (score > max_score) max_score = score;
+                                       last_score = data['score_history'][halfmove_num][0];
+                               }
+                               scores.push(last_score);
+                       }
+                       if (data['plot_score']) {
+                               scores.push(data['plot_score']);
+                       }
+                       // FIXME: at some widths, calling sparkline() seems to push
+                       // #scorecontainer under the board.
+                       $("#scorespark").sparkline(scores, {
+                               type: 'bar',
+                               zeroColor: 'gray',
+                               chartRangeMin: min_score,
+                               chartRangeMax: max_score,
+                               tooltipFormatter: function(sparkline, options, fields) {
+                                       return format_tooltip(data, fields[0].offset + first_move_num);
+                               }
+                       });
+               } else {
+                       $("#scorespark").text("");
+               }
+       } else {
+               $("#scorespark").text("");
+       }
 }
 
 /**
 }
 
 /**
@@ -1021,6 +1084,35 @@ var format_halfmove_with_number = function(move, halfmove_num) {
                halfmove_num % 2 == 0);
 }
 
                halfmove_num % 2 == 0);
 }
 
+/**
+ * @param {Object} data
+ * @param {Number} halfmove_num
+ */
+var format_tooltip = function(data, halfmove_num) {
+       if (data['score_history'][halfmove_num] ||
+           halfmove_num === data['position']['pretty_history'].length) {
+               var move;
+               var short_score;
+               if (halfmove_num === data['position']['pretty_history'].length) {
+                       move = data['position']['last_move'];
+                       short_score = data['short_score'];
+               } else {
+                       move = data['position']['pretty_history'][halfmove_num];
+                       short_score = data['score_history'][halfmove_num][1];
+               }
+               var move_with_number = format_halfmove_with_number(move, halfmove_num);
+
+               return "After " + move_with_number + ": " + short_score;
+       } else {
+               for (var i = halfmove_num; i --> 0; ) {
+                       if (data['score_history'][i]) {
+                               var move = data['position']['pretty_history'][i];
+                               return "[Analysis kept from " + format_halfmove_with_number(move, i) + "]";
+                       }
+               }
+       }
+}
+
 /**
  * @param {boolean} sort_by_score
  */
 /**
  * @param {boolean} sort_by_score
  */
@@ -1228,6 +1320,7 @@ var init = function() {
        request_update();
        $(window).resize(function() {
                board.resize();
        request_update();
        $(window).resize(function() {
                board.resize();
+               update_sparkline(displayed_analysis_data || current_analysis_data);
                update_highlight();
                redraw_arrows();
        });
                update_highlight();
                redraw_arrows();
        });