当前路径：Classes/PHPExcel/Writer/Excel2007/Chart.php
<?php

/**
 * PHPExcel_Writer_Excel2007_Chart
 *
 * Copyright (c) 2006 - 2015 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel_Writer_Excel2007
 * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    ##VERSION##, ##DATE##
 */
class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPart
{
    protected $calculateCellValues;

    /**
     * Write charts to XML format
     *
     * @param  PHPExcel_Chart $pChart
     *
     * @return  string            XML Output
     * @throws  PHPExcel_Writer_Exception
     */
    public function writeChart(PHPExcel_Chart $pChart = null, $calculateCellValues = true)
    {
        $this->calculateCellValues = $calculateCellValues;

        // Create XML writer
        $objWriter = null;
        if ($this->getParentWriter()->getUseDiskCaching()) {
            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
        } else {
            $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
        }
        //    Ensure that data series values are up-to-date before we save
        if ($this->calculateCellValues) {
            $pChart->refresh();
        }

        // XML header
        $objWriter->startDocument('1.0', 'UTF-8', 'yes');

        // c:chartSpace
        $objWriter->startElement('c:chartSpace');
        $objWriter->writeAttribute('xmlns:c', 'http://schemas.openxmlformats.org/drawingml/2006/chart');
        $objWriter->writeAttribute('xmlns:a', 'http://schemas.openxmlformats.org/drawingml/2006/main');
        $objWriter->writeAttribute('xmlns:r', 'http://schemas.openxmlformats.org/officeDocument/2006/relationships');

        $objWriter->startElement('c:date1904');
        $objWriter->writeAttribute('val', 0);
        $objWriter->endElement();
        $objWriter->startElement('c:lang');
        $objWriter->writeAttribute('val', "en-GB");
        $objWriter->endElement();
        $objWriter->startElement('c:roundedCorners');
        $objWriter->writeAttribute('val', 0);
        $objWriter->endElement();

        $this->writeAlternateContent($objWriter);

        $objWriter->startElement('c:chart');

        $this->writeTitle($pChart->getTitle(), $objWriter);

        $objWriter->startElement('c:autoTitleDeleted');
        $objWriter->writeAttribute('val', 0);
        $objWriter->endElement();

        $this->writePlotArea($pChart->getPlotArea(), $pChart->getXAxisLabel(), $pChart->getYAxisLabel(), $objWriter, $pChart->getWorksheet(), $pChart->getChartAxisX(), $pChart->getChartAxisY(), $pChart->getMajorGridlines(), $pChart->getMinorGridlines());

        $this->writeLegend($pChart->getLegend(), $objWriter);

        $objWriter->startElement('c:plotVisOnly');
        $objWriter->writeAttribute('val', 1);
        $objWriter->endElement();

        $objWriter->startElement('c:dispBlanksAs');
        $objWriter->writeAttribute('val', "gap");
        $objWriter->endElement();

        $objWriter->startElement('c:showDLblsOverMax');
        $objWriter->writeAttribute('val', 0);
        $objWriter->endElement();

        $objWriter->endElement();

        $this->writePrintSettings($objWriter);

        $objWriter->endElement();

        // Return
        return $objWriter->getData();
    }

    /**
     * Write Chart Title
     *
     * @param  PHPExcel_Chart_Title $title
     * @param  PHPExcel_Shared_XMLWriter $objWriter XML Writer
     *
     * @throws  PHPExcel_Writer_Exception
     */
    private function writeTitle(PHPExcel_Chart_Title $title = null, $objWriter)
    {
        if (is_null($title)) {
            return;
        }

        $objWriter->startElement('c:title');
        $objWriter->startElement('c:tx');
        $objWriter->startElement('c:rich');

        $objWriter->startElement('a:bodyPr');
        $objWriter->endElement();

        $objWriter->startElement('a:lstStyle');
        $objWriter->endElement();

        $objWriter->startElement('a:p');

        $caption = $title->getCaption();
        if ((is_array($caption)) && (count($caption) > 0)) {
            $caption = $caption[0];
        }
        $this->getParentWriter()->getWriterPart('stringtable')->writeRichTextForCharts($objWriter, $caption, 'a');

        $objWriter->endElement();
        $objWriter->endElement();
        $objWriter->endElement();

        $this->writeLayout($title->getLayout(), $objWriter);

        $objWriter->startElement('c:overlay');
        $objWriter->writeAttribute('val', 0);
        $objWriter->endElement();

        $objWriter->endElement();
    }

    /**
     * Write Chart Legend
     *
     * @param  PHPExcel_Chart_Legend $legend
     * @param  PHPExcel_Shared_XMLWriter $objWriter XML Writer
     *
     * @throws  PHPExcel_Writer_Exception
     */
    private function writeLegend(PHPExcel_Chart_Legend $legend = null, $objWriter)
    {
        if (is_null($legend)) {
            return;
        }

        $objWriter->startElement('c:legend');

        $objWriter->startElement('c:legendPos');
        $objWriter->writeAttribute('val', $legend->getPosition());
        $objWriter->endElement();

        $this->writeLayout($legend->getLayout(), $objWriter);

        $objWriter->startElement('c:overlay');
        $objWriter->writeAttribute('val', ($legend->getOverlay()) ? '1' : '0');
        $objWriter->endElement();

        $objWriter->startElement('c:txPr');
        $objWriter->startElement('a:bodyPr');
        $objWriter->endElement();

        $objWriter->startElement('a:lstStyle');
        $objWriter->endElement();

        $objWriter->startElement('a:p');
        $objWriter->startElement('a:pPr');
        $objWriter->writeAttribute('rtl', 0);

        $objWriter->startElement('a:defRPr');
        $objWriter->endElement();
        $objWriter->endElement();

        $objWriter->startElement('a:endParaRPr');
        $objWriter->writeAttribute('lang', "en-US");
        $objWriter->endElement();

        $objWriter->endElement();
        $objWriter->endElement();

        $objWriter->endElement();
    }

    /**
     * Write Chart Plot Area
     *
     * @param  PHPExcel_Chart_PlotArea $plotArea
     * @param  PHPExcel_Chart_Title $xAxisLabel
     * @param  PHPExcel_Chart_Title $yAxisLabel
     * @param  PHPExcel_Chart_Axis $xAxis
     * @param  PHPExcel_Chart_Axis $yAxis
     * @param  PHPExcel_Shared_XMLWriter $objWriter XML Writer
     *
     * @throws  PHPExcel_Writer_Exception
     */
    private function writePlotArea(PHPExcel_Chart_PlotArea $plotArea, PHPExcel_Chart_Title $xAxisLabel = null, PHPExcel_Chart_Title $yAxisLabel = null, $objWriter, PHPExcel_Worksheet $pSheet, PHPExcel_Chart_Axis $xAxis, PHPExcel_Chart_Axis $yAxis, PHPExcel_Chart_GridLines $majorGridlines, PHPExcel_Chart_GridLines $minorGridlines)
    {
        if (is_null($plotArea)) {
            return;
        }

        $id1 = $id2 = 0;
        $this->_seriesIndex = 0;
        $objWriter->startElement('c:plotArea');

        $layout = $plotArea->getLayout();

        $this->writeLayout($layout, $objWriter);

        $chartTypes = self::getChartType($plotArea);
        $catIsMultiLevelSeries = $valIsMultiLevelSeries = false;
        $plotGroupingType = '';
        foreach ($chartTypes as $chartType) {
            $objWriter->startElement('c:' . $chartType);

            $groupCount = $plotArea->getPlotGroupCount();
            for ($i = 0; $i < $groupCount; ++$i) {
                $plotGroup = $plotArea->getPlotGroupByIndex($i);
                $groupType = $plotGroup->getPlotType();
                if ($groupType == $chartType) {
                    $plotStyle = $plotGroup->getPlotStyle();
                    if ($groupType === PHPExcel_Chart_DataSeries::TYPE_RADARCHART) {
                        $objWriter->startElement('c:radarStyle');
                        $objWriter->writeAttribute('val', $plotStyle);
                        $objWriter->endElement();
                    } elseif ($groupType === PHPExcel_Chart_DataSeries::TYPE_SCATTERCHART) {
                        $objWriter->startElement('c:scatterStyle');
                        $objWriter->writeAttribute('val', $plotStyle);
                        $objWriter->endElement();
                    }

                    $this->writePlotGroup($plotGroup, $chartType, $objWriter, $catIsMultiLevelSeries, $valIsMultiLevelSeries, $plotGroupingType, $pSheet);
                }
            }

            $this->writeDataLabels($objWriter, $layout);

            if ($chartType === PHPExcel_Chart_DataSeries::TYPE_LINECHART) {
                //    Line only, Line3D can't be smoothed

                $objWriter->startElement('c:smooth');
                $objWriter->writeAttribute('val', (integer) $plotGroup->getSmoothLine());
                $objWriter->endElement();
            } elseif (($chartType === PHPExcel_Chart_DataSeries::TYPE_BARCHART) ||($chartType === PHPExcel_Chart_DataSeries::TYPE_BARCHART_3D)) {
                $objWriter->startElement('c:gapWidth');
                $objWriter->writeAttribute('val', 150);
                $objWriter->endElement();

                if ($plotGroupingType == 'percentStacked' || $plotGroupingType == 'stacked') {
                    $objWriter->startElement('c:overlap');
                    $objWriter->writeAttribute('val', 100);
                    $objWriter->endElement();
                }
            } elseif ($chartType === PHPExcel_Chart_DataSeries::TYPE_BUBBLECHART) {
                $objWriter->startElement('c:bubbleScale');
                $objWriter->writeAttribute('val', 25);
                $objWriter->endElement();

                $objWriter->startElement('c:showNegBubbles');
                $objWriter->writeAttribute('val', 0);
                $objWriter->endElement();
            } elseif ($chartType === PHPExcel_Chart_DataSeries::TYPE_STOCKCHART) {
                $objWriter->startElement('c:hiLowLines');
                $objWriter->endElement();

                $objWriter->startElement('c:upDownBars');

                $objWriter->startElement('c:gapWidth');
                $objWriter->writeAttribute('val', 300);
                $objWriter->endElement();

                $objWriter->startElement('c:upBars');
                $objWriter->endElement();

                $objWriter->startElement('c:downBars');
                $objWriter->endElement();

                $objWriter->endElement();
            }

            //    Generate 2 unique numbers to use for axId values
            //                    $id1 = $id2 = rand(10000000,99999999);
            //                    do {
            //                        $id2 = rand(10000000,99999999);
            //                    } while ($id1 == $id2);
            $id1 = '75091328';
            $id2 = '75089408';

            if (($chartType !== PHPExcel_Chart_DataSeries::TYPE_PIECHART) && ($chartType !== PHPExcel_Chart_DataSeries::TYPE_PIECHART_3D) && ($chartType !== PHPExcel_Chart_DataSeries::TYPE_DONUTCHART)) {
                $objWriter->startElement('c:axId');
                $objWriter->writeAttribute('val', $id1);
                $objWriter->endElement();
                $objWriter->startElement('c:axId');
                $objWriter->writeAttribute('val', $id2);
                $objWriter->endElement();
            } else {
                $objWriter->startElement('c:firstSliceAng');
                $objWriter->writeAttribute('val', 0);
                $objWriter->endElement();

                if ($chartType === PHPExcel_Chart_DataSeries::TYPE_DONUTCHART) {
                    $objWriter->startElement('c:holeSize');
                    $objWriter->writeAttribute('val', 50);
                    $objWriter->endElement();
                }
            }

            $objWriter->endElement();
        }

        if (($chartType !== PHPExcel_Chart_DataSeries::TYPE_PIECHART) && ($chartType !== PHPExcel_Chart_DataSeries::TYPE...