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Initial (as yet untested) code to include Excel charts in HTML and PDF output

This commit is contained in:
Mark Baker 2012-11-05 00:50:21 +00:00
parent 016ee6e4d8
commit f7268cdd65
1 changed files with 127 additions and 3 deletions
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130
Classes/PHPExcel/Writer/HTML.php
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@ -48,6 +48,14 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
*/
private $_sheetIndex = 0;
/**
* Write charts that are defined in the workbook?
* Identifies whether the Writer should write definitions for any charts that exist in the PHPExcel object;
*
* @var boolean
*/
private $_includeCharts = false;
/**
* Pre-calculate formulas
*
@ -62,6 +70,13 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
*/
private $_imagesRoot = '.';
/**
* embed images, or link to images
*
* @var boolean
*/
private $_embedImages = FALSE;
/**
* Use inline CSS?
*
@ -516,7 +531,7 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
* @return string
* @throws PHPExcel_Writer_Exception
*/
private function _writeImageTagInCell(PHPExcel_Worksheet $pSheet, $coordinates) {
private function _writeImageInCell(PHPExcel_Worksheet $pSheet, $coordinates) {
// Construct HTML
$html = '';
@ -543,7 +558,66 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
$filename = htmlspecialchars($filename);
$html .= PHP_EOL;
$html .= ' <img style="position: relative; left: ' . $drawing->getOffsetX() . 'px; top: ' . $drawing->getOffsetY() . 'px; width: ' . $drawing->getWidth() . 'px; height: ' . $drawing->getHeight() . 'px;" src="' . $filename . '" border="0" width="' . $drawing->getWidth() . '" height="' . $drawing->getHeight() . '" />' . PHP_EOL;
if ((!$this->_embedImages) || ($this->_isPdf)) {
$imageData = $filename;
} else {
$imageDetails = getimagesize($filename);
if ($fp = fopen($filename,"rb", 0)) {
$picture = fread($fp,filesize($filename));
fclose($fp);
// base64 encode the binary data, then break it
// into chunks according to RFC 2045 semantics
$base64 = chunk_split(base64_encode($picture));
$imageData = 'data:'.$imageDetails['mime'].';base64,' . $base64;
} else {
$imageData = $filename;
}
}
$html .= '<img style="position: relative; left: ' . $drawing->getOffsetX() . 'px; top: ' . $drawing->getOffsetY() . 'px; width: ' . $drawing->getWidth() . 'px; height: ' . $drawing->getHeight() . 'px;" src="' . $imageData . '" border="0" width="' . $drawing->getWidth() . '" height="' . $drawing->getHeight() . '" />' . PHP_EOL;
}
}
}
// Return
return $html;
}
/**
* Generate chart tag in cell
*
* @param PHPExcel_Worksheet $pSheet PHPExcel_Worksheet
* @param string $coordinates Cell coordinates
* @return string
* @throws PHPExcel_Writer_Exception
*/
private function _writeChartInCell(PHPExcel_Worksheet $pSheet, $coordinates) {
// Construct HTML
$html = '';
// Write charts
foreach ($pSheet->getChartCollection() as $chart) {
if ($chart instanceof PHPExcel_Chart) {
$chartCoordinates = $chart->getTopLeftPosition();
if ($chartCoordinates['cell'] == $coordinates) {
$chartFileName = tempnam(PHPExcel_Shared_File::sys_get_temp_dir());
if (!$chart->render($chartFileName)) {
return;
}
$html .= PHP_EOL;
$imageDetails = getimagesize($chartFileName);
if ($fp = fopen($chartFileName,"rb", 0)) {
$picture = fread($fp,filesize($chartFileName));
fclose($fp);
// base64 encode the binary data, then break it
// into chunks according to RFC 2045 semantics
$base64 = chunk_split(base64_encode($picture));
$imageData = 'data:'.$imageDetails['mime'].';base64,' . $base64;
$html .= '<img style="position: relative; left: ' . $chartCoordinates['xOffset'] . 'px; top: ' . $chartCoordinates['yOffset'] . 'px; width: ' . $chart->getWidth() . 'px; height: ' . $chart->getHeight() . 'px;" src="' . $imageData . '" border="0" />' . PHP_EOL;
unlink($chartFileName);
}
}
}
}
@ -1153,7 +1227,12 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
$html .= '>';
// Image?
$html .= $this->_writeImageTagInCell($pSheet, $coordinate);
$html .= $this->_writeImageInCell($pSheet, $coordinate);
// Chart?
if ($this->_includeCharts) {
$html .= $this->_writeChartInCell($pSheet, $coordinate);
}
// Cell data
$html .= $cellData;
@ -1233,6 +1312,26 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
return $this;
}
/**
* Get embed images
*
* @return boolean
*/
public function getEmbedImages() {
return $this->_embedImages;
}
/**
* Set embed images
*
* @param boolean $pValue
* @return PHPExcel_Writer_HTML
*/
public function setEmbedImages($pValue = '.') {
$this->_embedImages = $pValue;
return $this;
}
/**
* Get use inline CSS?
*
@ -1374,4 +1473,29 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
$this->_spansAreCalculated = true;
}
/**
* Write charts in workbook?
* If this is true, then the Writer will write definitions for any charts that exist in the PHPExcel object.
* If false (the default) it will ignore any charts defined in the PHPExcel object.
*
* @return boolean
*/
public function getIncludeCharts() {
return $this->_includeCharts;
}
/**
* Set write charts in workbook
* Set to true, to advise the Writer to include any charts that exist in the PHPExcel object.
* Set to false (the default) to ignore charts.
*
* @param boolean $pValue
*
* @return PHPExcel_Writer_Excel2007
*/
public function setIncludeCharts($pValue = false) {
$this->_includeCharts = (boolean) $pValue;
return $this;
}
}