added stacked bar chart

libraries/chart.lib.php

@@ -4,6 +4,7 @@ require_once './libraries/chart/pma_ofc_pie.php';
 
 require_once './libraries/chart/pma_pChart_pie.php';
 require_once './libraries/chart/pma_pChart_bar.php';
+require_once './libraries/chart/pma_pChart_stacked.php';
 
 /**
  * Chart functions used to generate various types
@@ -57,19 +58,72 @@ function PMA_chart_profiling($data)
 function PMA_chart_results($data)
 {
     $chartData = array();
+    $chart = null;
+    $chartTitle = __('Query results');
+
+    if (!isset($data[0])) {
+        // empty data
+        return;
+    }
+
+    if (count($data[0]) == 2) {
+        // Two columns in every row.
+        // This data is suitable for a simple bar chart.
 
         // loop through the rows
         foreach ($data as $row) {
-
             // loop through the columns in the row
             foreach ($row as $key => $value) {
                 $chartData[$key][] = $value;
             }
         }
 
-    $chart = new PMA_pChart_bar(
-            __('Query results'),
-            $chartData);
+        $chart = new PMA_pChart_bar($chartTitle, $chartData);
+    }
+    else if (count($data[0]) == 3) {
+        // Three columns (x axis, y axis, series) in every row.
+        // This data is suitable for a stacked bar chart.
+        $keys = array_keys($data[0]);
+        $xAxisKey = $keys[0];
+        $yAxisKey = $keys[1];
+        $seriesKey = $keys[2];
+        
+        // get all the series labels
+        $seriesLabels = array();
+        foreach ($data as $row) {
+            $seriesLabels[] = $row[$seriesKey];
+        }
+        $seriesLabels = array_unique($seriesLabels);
+
+        // loop through the rows
+        $currentXLabel = $data[0][$xAxisKey];
+        foreach ($data as $row) {
+
+            // save the label
+            // use the same as the value to get rid of duplicate results
+            $chartData[$xAxisKey][$row[$xAxisKey]] = $row[$xAxisKey];
+
+            // make sure to set value to every serie
+            $currentSeriesLabel = (string)$row[$seriesKey];
+            foreach ($seriesLabels as $seriesLabelsValue) {
+                if ($currentSeriesLabel == $seriesLabelsValue) {
+                    // the value os for this serie
+                    $chartData[$yAxisKey][$seriesLabelsValue][$row[$xAxisKey]] = (int)$row[$yAxisKey];
+                }
+                else if (!isset($chartData[$yAxisKey][$seriesLabelsValue][$row[$xAxisKey]])) {
+                    // if the value for this serie is not set, set it to 0
+                    $chartData[$yAxisKey][$seriesLabelsValue][$row[$xAxisKey]] = 0;
+                }
+            }
+        }
+
+        $chart = new PMA_pChart_stacked($chartTitle, $chartData);
+    }
+    else {
+        // unknown data
+        return;
+    }
+
     echo $chart->toString();
 }
 

libraries/chart/pma_pchart_bar.php

@@ -44,7 +44,7 @@ class PMA_pChart_bar extends PMA_pChart_Chart
         $this->chart->drawStackedBarGraph($this->dataSet->GetData(),$this->dataSet->GetDataDescription(),70);
 
         // Draw the title
-        $this->chart->drawTextBox(0,0,$this->width,$this->labelHeight,$titleText,0,255,255,255,ALIGN_CENTER,TRUE,0,0,0,30);
+        $this->chart->drawTextBox(0,0,$this->width,$this->labelHeight,$this->titleText,0,255,255,255,ALIGN_CENTER,TRUE,0,0,0,30);
 
         $this->chart->addBorder(2);
     }

libraries/chart/pma_pchart_stacked.php

@@ -0,0 +1,67 @@
+<?php
+
+require_once 'pma_pchart_chart.php';
+
+class PMA_pChart_stacked extends PMA_pChart_Chart
+{
+    private $labelHeight = 20;
+
+    // as in CSS (top, right, bottom, left)
+    private $areaMargins = array(20, 20, 40, 60);
+
+    private $legendLeftMargin = 10;
+
+    protected function prepareDataSet()
+    {
+        $values = array_values($this->data);
+        $keys = array_keys($this->data);
+
+        // Dataset definition
+        $this->dataSet = new pData;
+        $this->dataSet->AddPoint($values[0], "Keys");
+
+        $i = 0;
+        foreach ($values[1] as $seriesName => $seriesData) {            
+            $this->dataSet->AddPoint($seriesData, "Values".$i);
+            $this->dataSet->SetSerieName($seriesName, "Values".$i);
+            $i++;
+        }        
+        $this->dataSet->AddAllSeries();
+
+        $this->dataSet->RemoveSerie("Keys");
+        $this->dataSet->SetAbsciseLabelSerie("Keys");
+
+        $this->dataSet->SetXAxisName($keys[0]);
+        $this->dataSet->SetYAxisName($keys[1]);        
+    }
+
+    protected function prepareChart()
+    {
+        // Initialise the graph
+        $this->chart = new pChart($this->width, $this->height);
+        $this->chart->drawGraphAreaGradient(132,173,131,50,TARGET_BACKGROUND);
+
+        $this->chart->setFontProperties($this->fontPath.'tahoma.ttf', 8);
+
+        $legendSize = $this->chart->getLegendBoxSize($this->dataSet->GetDataDescription());
+
+        $this->chart->setGraphArea($this->areaMargins[3],$this->labelHeight + $this->areaMargins[0],$this->width - $this->areaMargins[1] - $legendSize[0],$this->height - $this->areaMargins[2]);
+        $this->chart->drawGraphArea(213,217,221,FALSE);
+        $this->chart->drawScale($this->dataSet->GetData(),$this->dataSet->GetDataDescription(),SCALE_ADDALLSTART0,213,217,221,TRUE,0,2,TRUE);
+        $this->chart->drawGraphAreaGradient(163,203,167,50);
+        $this->chart->drawGrid(4,TRUE,230,230,230,20);
+        
+        // Draw the bar chart
+        $this->chart->drawStackedBarGraph($this->dataSet->GetData(),$this->dataSet->GetDataDescription(),70);
+
+        // Draw the title
+        $this->chart->drawTextBox(0,0,$this->width,$this->labelHeight,$this->titleText,0,255,255,255,ALIGN_CENTER,TRUE,0,0,0,30);
+
+        // Draw the legend
+        $this->chart->drawLegend($this->width - $this->areaMargins[1] - $legendSize[0] + $this->legendLeftMargin,$this->labelHeight + $this->areaMargins[0],$this->dataSet->GetDataDescription(),250,250,250,50,50,50);
+
+        $this->chart->addBorder(2);
+    }
+}
+
+?>