Add support for charts in template processor

docs/templates-processing.rst

@@ -249,17 +249,28 @@ See ``Sample_40_TemplateSetComplexValue.php`` for examples.
     $table->addCell(150)->addText('Cell B2');
     $table->addCell(150)->addText('Cell B3');
     $templateProcessor->setComplexBlock('table', $table);
-
+
+setChartValue
+"""""""""""""
+Replace a variable by a chart.
+
+.. code-block:: php
+
+    $categories = array('A', 'B', 'C', 'D', 'E');
+    $series1 = array(1, 3, 2, 5, 4);
+    $chart = new Chart('doughnut', $categories, $series1);
+    $templateProcessor->setChartValue('myChart', $chart);
+
 save
-"""""""""
+""""
 Saves the loaded template within the current directory. Returns the file path.
 
 .. code-block:: php
 
     $filepath = $templateProcessor->save();
 
 saveAs
-"""""""""
+""""""
 Saves a copy of the loaded template in the indicated path.
 
 .. code-block:: php

samples/Sample_41_TemplateSetChart.php

@@ -0,0 +1,45 @@
+<?php
+use PhpOffice\PhpWord\Element\Chart;
+use PhpOffice\PhpWord\Shared\Converter;
+
+include_once 'Sample_Header.php';
+
+// Template processor instance creation
+echo date('H:i:s'), ' Creating new TemplateProcessor instance...', EOL;
+$templateProcessor = new \PhpOffice\PhpWord\TemplateProcessor('resources/Sample_41_TemplateSetChart.docx');
+
+$chartTypes = array('pie', 'doughnut', 'bar', 'column', 'line', 'area', 'scatter', 'radar', 'stacked_bar', 'percent_stacked_bar', 'stacked_column', 'percent_stacked_column');
+$twoSeries = array('bar', 'column', 'line', 'area', 'scatter', 'radar', 'stacked_bar', 'percent_stacked_bar', 'stacked_column', 'percent_stacked_column');
+$threeSeries = array('bar', 'line');
+
+$categories = array('A', 'B', 'C', 'D', 'E');
+$series1 = array(1, 3, 2, 5, 4);
+$series2 = array(3, 1, 7, 2, 6);
+$series3 = array(8, 3, 2, 5, 4);
+
+$i = 0;
+foreach ($chartTypes as $chartType) {
+    $chart = new Chart($chartType, $categories, $series1);
+
+    if (in_array($chartType, $twoSeries)) {
+        $chart->addSeries($categories, $series2);
+    }
+    if (in_array($chartType, $threeSeries)) {
+        $chart->addSeries($categories, $series3);
+    }
+
+    $chart->getStyle()
+        ->setWidth(Converter::inchToEmu(3))
+        ->setHeight(Converter::inchToEmu(3));
+
+    $templateProcessor->setChart("chart{$i}", $chart);
+    $i++;
+}
+
+echo date('H:i:s'), ' Saving the result document...', EOL;
+$templateProcessor->saveAs('results/Sample_41_TemplateSetChart.docx');
+
+echo getEndingNotes(array('Word2007' => 'docx'), 'results/Sample_41_TemplateSetChart.docx');
+if (!CLI) {
+    include_once 'Sample_Footer.php';
+}

src/PhpWord/TemplateProcessor.php

@@ -355,6 +355,46 @@ public function setValues(array $values)
         }
     }
 
+    /**
+     * @param string $search
+     * @param \PhpOffice\PhpWord\Element\AbstractElement $complexType
+     */
+    public function setChart($search, \PhpOffice\PhpWord\Element\AbstractElement $chart)
+    {
+        $elementName = substr(get_class($chart), strrpos(get_class($chart), '\\') + 1);
+        $objectClass = 'PhpOffice\\PhpWord\\Writer\\Word2007\\Element\\' . $elementName;
+
+        // Get the next relation id
+        $rId = $this->getNextRelationsIndex($this->getMainPartName());
+        $chart->setRelationId($rId);
+
+        // Define the chart filename
+        $filename = "charts/chart{$rId}.xml";
+
+        // Get the part writer
+        $writerPart = new \PhpOffice\PhpWord\Writer\Word2007\Part\Chart();
+        $writerPart->setElement($chart);
+
+        // ContentTypes.xml
+        $this->zipClass->addFromString("word/{$filename}", $writerPart->write());
+
+        // add chart to content type
+        $xmlRelationsType = "<Override PartName=\"/word/{$filename}\" ContentType=\"application/vnd.openxmlformats-officedocument.drawingml.chart+xml\"/>";
+        $this->tempDocumentContentTypes = str_replace('</Types>', $xmlRelationsType, $this->tempDocumentContentTypes) . '</Types>';
+
+        // Add the chart to relations
+        $xmlChartRelation = "<Relationship Id=\"rId{$rId}\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/chart\" Target=\"charts/chart{$rId}.xml\"/>";
+        $this->tempDocumentRelations[$this->getMainPartName()] = str_replace('</Relationships>', $xmlChartRelation, $this->tempDocumentRelations[$this->getMainPartName()]) . '</Relationships>';
+
+        // Write the chart
+        $xmlWriter = new XMLWriter();
+        $elementWriter = new $objectClass($xmlWriter, $chart, true);
+        $elementWriter->write();
+
+        // Place it in the template
+        $this->replaceXmlBlock($search, '<w:p>' . $xmlWriter->getData() . '</w:p>', 'w:p');
+    }
+
     private function getImageArgs($varNameWithArgs)
     {
         $varElements = explode(':', $varNameWithArgs);

src/PhpWord/Writer/Word2007/Part/Chart.php

@@ -219,6 +219,7 @@ private function writeSeries(XMLWriter $xmlWriter, $scatter = false)
         $colors = $style->getColors();
 
         $index = 0;
+        $colorIndex = 0;
         foreach ($series as $seriesItem) {
             $categories = $seriesItem['categories'];
             $values = $seriesItem['values'];
@@ -265,23 +266,21 @@ private function writeSeries(XMLWriter $xmlWriter, $scatter = false)
                 $this->writeSeriesItem($xmlWriter, 'cat', $categories);
                 $this->writeSeriesItem($xmlWriter, 'val', $values);
 
-                // setting the chart colors was taken from https://github.com/PHPOffice/PHPWord/issues/494
-                if (is_array($colors) && count($colors)) {
-                    // This is a workaround to make each series in a stack chart use a different color
-                    if ($this->options['type'] == 'bar' && stristr($this->options['grouping'], 'stacked')) {
-                        array_shift($colors);
-                    }
-                    $colorIndex = 0;
-                    foreach ($colors as $color) {
+                // check that there are colors
+                if (is_array($colors) && count($colors) > 0) {
+                    // assign a color to each value
+                    $valueIndex = 0;
+                    for ($i = 0; $i < count($values); $i++) {
+                        // check that there are still enought colors
                         $xmlWriter->startElement('c:dPt');
-                        $xmlWriter->writeElementBlock('c:idx', 'val', $colorIndex);
+                        $xmlWriter->writeElementBlock('c:idx', 'val', $valueIndex);
                         $xmlWriter->startElement('c:spPr');
                         $xmlWriter->startElement('a:solidFill');
-                        $xmlWriter->writeElementBlock('a:srgbClr', 'val', $color);
+                        $xmlWriter->writeElementBlock('a:srgbClr', 'val', $colors[$colorIndex++ % count($colors)]);
                         $xmlWriter->endElement(); // a:solidFill
                         $xmlWriter->endElement(); // c:spPr
                         $xmlWriter->endElement(); // c:dPt
-                        $colorIndex++;
+                        $valueIndex++;
                     }
                 }
             }

tests/PhpWord/TemplateProcessorTest.php

@@ -401,7 +401,7 @@ public function testSetImageValue()
                                     return $imagePath;
                                 },
                                 'documentContent' => array('path' => $imagePath, 'width' => 500, 'height' => 500),
-                                'footerValue' => array('path' => $imagePath, 'width' => 100, 'height' => 50, 'ratio' => false),
+                                'footerValue'     => array('path' => $imagePath, 'width' => 100, 'height' => 50, 'ratio' => false),
         );
         $templateProcessor->setImageValue(array_keys($variablesReplace), $variablesReplace);
 

tests/PhpWord/Writer/Word2007/Element/ChartTest.php

@@ -113,7 +113,7 @@ public function testChartElements()
         for ($idxp1 = 1; $idxp1 < $numColor; ++$idxp1) {
             $idx = $idxp1; // stacked bar chart is shifted
             $element = $path . "/c:ser/c:dPt[$idxp1]/c:spPr/a:solidFill/a:srgbClr";
-            self::assertEquals($colorArray[$idx], $doc->getElementAttribute($element, 'val'), "bar chart idx=$idx");
+            self::assertEquals($colorArray[$idx - 1], $doc->getElementAttribute($element, 'val'), "bar chart idx=$idx");
         }
     }