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khosb/includes/pear/Image/Canvas/PDF.php

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Initial Commit of AgileBill Open Source
2008-11-26 22:50:40 +00:00
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Class for handling output in PDF format.
*
* Requires PHP extension PDFlib
*
* PHP versions 4 and 5
*
* LICENSE: 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., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* @category Images
* @package Image_Canvas
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id: PDF.php,v 1.5 2005/10/28 09:54:40 nosey Exp $
* @link http://pear.php.net/pepr/pepr-proposal-show.php?id=212
*/
/**
* Include file Image/Canvas.php
*/
require_once 'Image/Canvas.php';
/**
* Include file Image/Canvas/Color.php
*/
require_once 'Image/Canvas/Color.php';
/**
* PDF Canvas class.
*
* @category Images
* @package Image_Canvas
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version Release: @package_version@
* @link http://pear.php.net/pepr/pepr-proposal-show.php?id=212
*/
class Image_Canvas_PDF extends Image_Canvas
{
/**
* The PDF document
* @var resource
* @access private
*/
var $_pdf;
/**
* The major version of PDFlib
* @var int
* @access private
*/
var $_pdflib;
/**
* The font
* @var mixed
* @access private
*/
var $_pdfFont = false;
/**
* The width of the page
* @var int
* @access private
*/
var $_pageWidth;
/**
* The height of the page
* @var int
* @access private
*/
var $_pageHeight;
/**
* Create the PDF canvas.
*
* Parameters available:
*
* 'page' Specify the page/paper format for the graph's page, available
* formats are: A0, A1, A2, A3, A4, A5, A6, B5, letter, legal, ledger,
* 11x17, cd_front, inlay, inlay_nosides
*
* 'align' Alignment of the graph on the page, available options are:
* topleft, topcenter, topright, leftcenter, center, rightcenter,
* leftbottom, centerbottom, rightbottom
*
* 'orientation' Specifies the paper orientation, default is 'portrait' and
* 'landscape' is also supported.
*
* 'creator' The creator tag of the PDF/graph
*
* 'author' The author tag of the PDF/graph
*
* 'title' The title tag of the PDF/graph
*
* 'width' The width of the graph on the page
*
* 'height' The height of the graph on the page
*
* 'left' The left offset of the graph on the page
*
* 'top' The top offset of the graph on the page
*
* 'filename' The PDF file to open/add page to, using 'filename' requires
* the commercial version of PDFlib (http://www.pdflib.com/), this has for
* obvious ($ 450) reasons not been tested
*
* 'pdf' An existing PDFlib PDF document to add the page to
*
* 'add_page' (true/false) Used together with 'pdf', to specify whether the
* canvas should add a new graph page (true) or create the graph on the
* current page (false), default is 'true'
*
* The 'page' and 'width' & 'height' can be mutually omitted, if 'page' is
* omitted the page is created using dimensions of width x height, and if
* width and height are omitted the page dimensions are used for the graph.
*
* If 'pdf' is specified, 'filename', 'creator', 'author' and 'title' has no
* effect.
*
* 'left' and 'top' are overridden by 'align'
*
* It is required either to specify 'width' & 'height' or 'page'.
*
* The PDF format/PDFlib has some limitations on the capabilities, which
* means some functionality available using other canvass (fx. alpha
* blending and gradient fills) are not supported with PDF (see Canvas.txt
* in the docs/ folder for further details)
*
* @param array $param Parameter array
*/
function Image_Canvas_PDF($param)
{
if (isset($param['page'])) {
switch (strtoupper($param['page'])) {
case 'A0':
$this->_pageWidth = 2380;
$this->_pageHeight = 3368;
break;
case 'A1':
$this->_pageWidth = 1684;
$this->_pageHeight = 2380;
break;
case 'A2':
$this->_pageWidth = 1190;
$this->_pageHeight = 1684;
break;
case 'A3':
$this->_pageWidth = 842;
$this->_pageHeight = 1190;
break;
case 'A4':
$this->_pageWidth = 595;
$this->_pageHeight = 842;
break;
case 'A5':
$this->_pageWidth = 421;
$this->_pageHeight = 595;
break;
case 'A6':
$this->_pageWidth = 297;
$this->_pageHeight = 421;
break;
case 'B5':
$this->_pageWidth = 501;
$this->_pageHeight = 709;
break;
case 'LETTER':
$this->_pageWidth = 612;
$this->_pageHeight = 792;
break;
case 'LEGAL':
$this->_pageWidth = 612;
$this->_pageHeight = 1008;
break;
case 'LEDGER':
$this->_pageWidth = 1224;
$this->_pageHeight = 792;
break;
case '11X17':
$this->_pageWidth = 792;
$this->_pageHeight = 1224;
break;
case 'CD_FRONT':
$this->_pageWidth = 337;
$this->_pageHeight = 337;
break;
case 'INLAY':
$this->_pageWidth = 425;
$this->_pageHeight = 332;
break;
case 'INLAY_NOSIDES':
$this->_pageWidth = 390;
$this->_pageHeight = 332;
break;
}
}
if ((isset($param['orientation'])) && (strtoupper($param['orientation']) == 'LANDSCAPE')) {
$w = $this->_pageWidth;
$this->_pageWidth = $this->_pageHeight;
$this->_pageHeight = $w;
}
parent::Image_Canvas($param);
if (!$this->_pageWidth) {
$this->_pageWidth = $this->_width;
} elseif (!$this->_width) {
$this->_width = $this->_pageWidth;
}
if (!$this->_pageHeight) {
$this->_pageHeight = $this->_height;
} elseif (!$this->_height) {
$this->_height = $this->_pageHeight;
}
$this->_width = min($this->_width, $this->_pageWidth);
$this->_height = min($this->_height, $this->_pageHeight);
if ((isset($param['align'])) &&
(($this->_width != $this->_pageWidth) || ($this->_height != $this->_pageHeight))
) {
switch (strtoupper($param['align'])) {
case 'TOPLEFT':
$this->_top = 0;
$this->_left = 0;
break;
case 'TOPCENTER':
$this->_top = 0;
$this->_left = ($this->_pageWidth - $this->_width) / 2;
break;
case 'TOPRIGHT':
$this->_top = 0;
$this->_left = $this->_pageWidth - $this->_width;
break;
case 'LEFTCENTER':
$this->_top = ($this->_pageHeight - $this->_height) / 2;
$this->_left = 0;
break;
case 'CENTER':
$this->_top = ($this->_pageHeight - $this->_height) / 2;
$this->_left = ($this->_pageWidth - $this->_width) / 2;
break;
case 'RIGHTCENTER':
$this->_top = ($this->_pageHeight - $this->_height) / 2;
$this->_left = $this->_pageWidth - $this->_width;
break;
case 'LEFTBOTTOM':
$this->_top = $this->_pageHeight - $this->_height;
$this->_left = 0;
break;
case 'CENTERBOTTOM':
$this->_top = $this->_pageHeight - $this->_height;
$this->_left = ($this->_pageWidth - $this->_width) / 2;
break;
case 'RIGHTBOTTOM':
$this->_top = $this->_pageHeight - $this->_height;
$this->_left = $this->_pageWidth - $this->_width;
break;
}
}
$this->_pdflib = $this->_version();
$addPage = true;
if ((isset($param['pdf'])) && (is_resource($param['pdf']))) {
$this->_pdf =& $param['pdf'];
if ((isset($param['add_page'])) && ($param['add_page'] === false)) {
$addPage = false;
}
} else {
$this->_pdf = pdf_new();
if (isset($param['filename'])) {
pdf_open_file($this->_pdf, $param['filename']);
} else {
pdf_open_file($this->_pdf, '');
}
pdf_set_parameter($this->_pdf, 'warning', 'true');
pdf_set_info($this->_pdf, 'Creator', (isset($param['creator']) ? $param['creator'] : 'PEAR::Image_Canvas'));
pdf_set_info($this->_pdf, 'Author', (isset($param['author']) ? $param['author'] : 'Jesper Veggerby'));
pdf_set_info($this->_pdf, 'Title', (isset($param['title']) ? $param['title'] : 'Image_Canvas'));
}
if ($addPage) {
pdf_begin_page($this->_pdf, $this->_pageWidth, $this->_pageHeight);
}
$this->_reset();
}
/**
* Get the x-point from the relative to absolute coordinates
*
* @param float $x The relative x-coordinate (in percentage of total width)
* @return float The x-coordinate as applied to the canvas
* @access private
*/
function _getX($x)
{
return $this->_left + $x;
}
/**
* Get the y-point from the relative to absolute coordinates
*
* @param float $y The relative y-coordinate (in percentage of total width)
* @return float The y-coordinate as applied to the canvas
* @access private
*/
function _getY($y)
{
return $this->_pageHeight - ($this->_top + $y);
}
/**
* Get the color index for the RGB color
*
* @param int $color The color
* @return int The GD image index of the color
* @access private
*/
function _color($color = false)
{
if (($color === false) || ($color === 'opague') || ($color === 'transparent')) {
return false;
} else {
$color = Image_Canvas_Color::color2RGB($color);
$color[0] = $color[0]/255;
$color[1] = $color[1]/255;
$color[2] = $color[2]/255;
return $color;
}
}
/**
* Get the PDF linestyle
*
* @param mixed $lineStyle The line style to return, false if the one
* explicitly set
* @return bool True if set (so that a line should be drawn)
* @access private
*/
function _setLineStyle($lineStyle = false)
{
if ($lineStyle === false) {
$lineStyle = $this->_lineStyle;
}
if (($lineStyle == 'transparent') || ($lineStyle === false)) {
return false;
}
if (is_array($lineStyle)) {
// TODO Implement linestyles in PDFlib (using pdf_setcolor(.., 'pattern'...); ?
reset($lineStyle);
$lineStyle = current($lineStyle);
}
$color = $this->_color($lineStyle);
pdf_setlinewidth($this->_pdf, $this->_thickness);
if ($this->_pdflib < 4) {
pdf_setrgbcolor_stroke($this->_pdf, $color[0]/255, $color[1]/255, $color[2]/255);
} else {
pdf_setcolor($this->_pdf, 'stroke', 'rgb', $color[0], $color[1], $color[2], 0);
}
return true;
}
/**
* Set the PDF fill style
*
* @param mixed $fillStyle The fillstyle to return, false if the one
* explicitly set
* @return bool True if set (so that a line should be drawn)
* @access private
*/
function _setFillStyle($fillStyle = false)
{
if ($fillStyle === false) {
$fillStyle = $this->_fillStyle;
}
if (($fillStyle == 'transparent') || ($fillStyle === false)) {
return false;
}
$color = $this->_color($fillStyle);
if ($this->_pdflib < 4) {
pdf_setrgbcolor_fill($this->_pdf, $color[0]/255, $color[1]/255, $color[2]/255);
} else {
pdf_setcolor($this->_pdf, 'fill', 'rgb', $color[0], $color[1], $color[2], 0);
}
return true;
}
/**
* Set the PDF font
*
* @access private
*/
function _setFont()
{
$this->_pdfFont = false;
if (isset($this->_font['name'])) {
pdf_set_parameter($this->_pdf, 'FontOutline', $this->_font['name'] . '=' . $this->_font['file']);
$this->_pdfFont = pdf_findfont($this->_pdf, $this->_font['name'], $this->_font['encoding'], 1);
if ($this->_pdfFont) {
pdf_setfont($this->_pdf, $this->_pdfFont, $this->_font['size']);
$this->_setFillStyle($this->_font['color']);
}
} else {
$this->_setFillStyle('black');
}
}
/**
* Sets an image that should be used for filling.
*
* Image filling is not supported with PDF, filling 'transparent'
*
* @param string $filename The filename of the image to fill with
*/
function setFillImage($filename)
{
$this->_fillStyle = 'transparent';
}
/**
* Sets a gradient fill
*
* Gradient filling is not supported with PDF, end color used as solid fill.
*
* @param array $gradient Gradient fill options
*/
function setGradientFill($gradient)
{
$this->_fillStyle = $gradient['end'];
}
/**
* Sets the font options.
*
* The $font array may have the following entries:
*
* 'ttf' = the .ttf file (either the basename, filename or full path)
* If 'ttf' is specified, then the following can be specified
*
* 'size' = size in pixels
*
* 'angle' = the angle with which to write the text
*
* @param array $font The font options.
*/
function setFont($fontOptions)
{
parent::setFont($fontOptions);
if (!isset($this->_font['size'])) {
$this->_font['size'] = 12;
}
if (!isset($this->_font['encoding'])) {
$this->_font['encoding'] = 'winansi';
}
if (!isset($this->_font['color'])) {
$this->_font['color'] = 'black';
}
}
/**
* Resets the canvas.
*
* Includes fillstyle, linestyle, thickness and polygon
*
* @access private
*/
function _reset()
{
pdf_initgraphics($this->_pdf);
parent::_reset();
}
/**
* Draw a line
*
* Parameter array:
* 'x0': int X start point
* 'y0': int Y start point
* 'x1': int X end point
* 'y1': int Y end point
* 'color': mixed [optional] The line color
* @param array $params Parameter array
*/
function line($params)
{
$color = (isset($params['color']) ? $params['color'] : false);
if ($this->_setLineStyle($color)) {
pdf_moveto($this->_pdf, $this->_getX($params['x0']), $this->_getY($params['y0']));
pdf_lineto($this->_pdf, $this->_getX($params['x1']), $this->_getY($params['x1']));
pdf_stroke($this->_pdf);
}
parent::line($params);
}
/**
* Parameter array:
* 'connect': bool [optional] Specifies whether the start point should be
* connected to the endpoint (closed polygon) or not (connected line)
* 'fill': mixed [optional] The fill color
* 'line': mixed [optional] The line color
* @param array $params Parameter array
*/
function polygon($params = array())
{
$connectEnds = (isset($params['connect']) ? $params['connect'] : false);
$fillColor = (isset($params['fill']) ? $params['line'] : false);
$lineColor = (isset($params['line']) ? $params['line'] : false);
$line = $this->_setLineStyle($lineColor);
$fill = false;
if ($connectEnds) {
$fill = $this->_setFillStyle($fillColor);
}
$first = true;
foreach ($this->_polygon as $point) {
if ($first === true) {
pdf_moveto($this->_pdf, $point['X'], $point['Y']);
$first = $point;
} else {
if (isset($last['P1X'])) {
pdf_curveto($this->_pdf,
$last['P1X'],
$last['P1Y'],
$last['P2X'],
$last['P2Y'],
$point['X'],
$point['Y']
);
} else {
pdf_lineto($this->_pdf,
$point['X'],
$point['Y']
);
}
}
$last = $point;
}
if ($connectEnds) {
if (isset($last['P1X'])) {
pdf_curveto($this->_pdf,
$last['P1X'],
$last['P1Y'],
$last['P2X'],
$last['P2Y'],
$first['X'],
$first['Y']
);
} else {
pdf_lineto($this->_pdf,
$first['X'],
$first['Y']
);
}
}
if (($line) && ($fill)) {
pdf_fill_stroke($this->_pdf);
} elseif ($line) {
pdf_stroke($this->_pdf);
} elseif ($fill) {
pdf_fill($this->_pdf);
}
parent::polygon($params);
}
/**
* Draw a rectangle
*
* Parameter array:
* 'x0': int X start point
* 'y0': int Y start point
* 'x1': int X end point
* 'y1': int Y end point
* 'fill': mixed [optional] The fill color
* 'line': mixed [optional] The line color
* @param array $params Parameter array
*/
function rectangle($params)
{
$x0 = $this->_getX($params['x0']);
$y0 = $this->_getY($params['y0']);
$x1 = $this->_getX($params['x1']);
$y1 = $this->_getY($params['y1']);
$fillColor = (isset($params['fill']) ? $params['line'] : false);
$lineColor = (isset($params['line']) ? $params['line'] : false);
$line = $this->_setLineStyle($lineColor);
$fill = $this->_setFillStyle($fillColor);
if (($line) || ($fill)) {
pdf_rect($this->_pdf, $this->_getX(min($x0, $x1)), $this->_getY(max($y0, $y1)), abs($x1 - $x0), abs($y1 - $y0));
if (($line) && ($fill)) {
pdf_fill_stroke($this->_pdf);
} elseif ($line) {
pdf_stroke($this->_pdf);
} elseif ($fill) {
pdf_fill($this->_pdf);
}
}
parent::rectangle($params);
}
/**
* Draw an ellipse
*
* Parameter array:
* 'x': int X center point
* 'y': int Y center point
* 'rx': int X radius
* 'ry': int Y radius
* 'fill': mixed [optional] The fill color
* 'line': mixed [optional] The line color
* @param array $params Parameter array
*/
function ellipse($params)
{
$x = $this->_getX($params['x']);
$y = $this->_getY($params['y']);
$rx = $this->_getX($params['rx']);
$ry = $this->_getY($params['ry']);
$fillColor = (isset($params['fill']) ? $params['line'] : false);
$lineColor = (isset($params['line']) ? $params['line'] : false);
$line = $this->_setLineStyle($lineColor);
$fill = $this->_setFillStyle($fillColor);
if (($line) || ($fill)) {
if ($rx == $ry) {
pdf_circle($this->_pdf, $this->_getX($x), $this->_getY($y), $rx);
} else {
pdf_moveto($this->_pdf, $this->_getX($x - $rx), $this->_getY($y));
pdf_curveto($this->_pdf,
$this->_getX($x - $rx), $this->_getY($y),
$this->_getX($x - $rx), $this->_getY($y - $ry),
$this->_getX($x), $this->_getY($y - $ry)
);
pdf_curveto($this->_pdf,
$this->_getX($x), $this->_getY($y - $ry),
$this->_getX($x + $rx), $this->_getY($y - $ry),
$this->_getX($x + $rx), $this->_getY($y)
);
pdf_curveto($this->_pdf,
$this->_getX($x + $rx), $this->_getY($y),
$this->_getX($x + $rx), $this->_getY($y + $ry),
$this->_getX($x), $this->_getY($y + $ry)
);
pdf_curveto($this->_pdf,
$this->_getX($x), $this->_getY($y + $ry),
$this->_getX($x - $rx), $this->_getY($y + $ry),
$this->_getX($x - $rx), $this->_getY($y)
);
}
if (($line) && ($fill)) {
pdf_fill_stroke($this->_pdf);
} elseif ($line) {
pdf_stroke($this->_pdf);
} elseif ($fill) {
pdf_fill($this->_pdf);
}
}
parent::ellipse($params);
}
/**
* Draw a pie slice
*
* Parameter array:
* 'x': int X center point
* 'y': int Y center point
* 'rx': int X radius
* 'ry': int Y radius
* 'v1': int The starting angle (in degrees)
* 'v2': int The end angle (in degrees)
* 'srx': int [optional] Starting X-radius of the pie slice (i.e. for a doughnut)
* 'sry': int [optional] Starting Y-radius of the pie slice (i.e. for a doughnut)
* 'fill': mixed [optional] The fill color
* 'line': mixed [optional] The line color
* @param array $params Parameter array
*/
function pieslice($params)
{
$x = $this->_getX($params['x']);
$y = $this->_getY($params['y']);
$rx = $this->_getX($params['rx']);
$ry = $this->_getY($params['ry']);
$v1 = $this->_getX($params['v1']);
$v2 = $this->_getY($params['v2']);
$srx = $this->_getX($params['srx']);
$sry = $this->_getY($params['sry']);
$fillColor = (isset($params['fill']) ? $params['line'] : false);
$lineColor = (isset($params['line']) ? $params['line'] : false);
// TODO Implement PDFLIB::pieSlice()
parent::pieslice($params);
}
/**
* Get the width of a text,
*
* @param string $text The text to get the width of
* @return int The width of the text
*/
function textWidth($text)
{
if ($this->_pdfFont === false) {
return $this->_font['size'] * 0.7 * strlen($text);
} else {
return pdf_stringwidth($this->_pdf, $text, $this->_pdfFont, $this->_font['size']);
}
}
/**
* Get the height of a text,
*
* @param string $text The text to get the height of
* @return int The height of the text
*/
function textHeight($text)
{
if (isset($this->_font['size'])) {
return $this->_font['size'];
} else {
return 12;
}
}
/**
* Writes text
*
* Parameter array:
* 'x': int X-point of text
* 'y': int Y-point of text
* 'text': string The text to add
* 'alignment': array [optional] Alignment
* 'color': mixed [optional] The color of the text
*/
function addText($params)
{
$x = $this->_getX($params['x']);
$y = $this->_getY($params['y']);
$text = $params['text'];
$color = (isset($params['color']) ? $params['color'] : false);
$alignment = (isset($params['alignment']) ? $params['alignment'] : false);
$this->_setFont();
$textWidth = $this->textWidth($text);
$textHeight = $this->textHeight($text);
if (!is_array($alignment)) {
$alignment = array('vertical' => 'top', 'horizontal' => 'left');
}
if (!isset($alignment['vertical'])) {
$alignment['vertical'] = 'top';
}
if (!isset($alignment['horizontal'])) {
$alignment['horizontal'] = 'left';
}
if ($alignment['horizontal'] == 'right') {
$x = $x - $textWidth;
} elseif ($alignment['horizontal'] == 'center') {
$x = $x - ($textWidth / 2);
}
if ($alignment['vertical'] == 'top') {
$y = $y + $textHeight;
} elseif ($alignment['vertical'] == 'center') {
$y = $y + ($textHeight / 2);
}
if (($color === false) && (isset($this->_font['color']))) {
$color = $this->_font['color'];
}
pdf_show_xy($this->_pdf, $text, $this->_getX($x), $this->_getY($y));
parent::addText($params);
}
/**
* Overlay image
*
* Parameter array:
* 'x': int X-point of overlayed image
* 'y': int Y-point of overlayed image
* 'filename': string The filename of the image to overlay
* 'width': int [optional] The width of the overlayed image (resizing if possible)
* 'height': int [optional] The height of the overlayed image (resizing if possible)
* 'alignment': array [optional] Alignment
*/
function image($params)
{
$x = $this->_getX($params['x']);
$y = $this->_getY($params['y']);
$filename = $params['filename'];
$width = (isset($params['width']) ? $params['width'] : false);
$height = (isset($params['height']) ? $params['height'] : false);
$alignment = (isset($params['alignment']) ? $params['alignment'] : false);
if (substr($filename, -4) == '.png') {
$type = 'png';
} elseif (substr($filename, -4) == '.jpg') {
$type = 'jpeg';
}
$image = pdf_load_image($this->_pdf, $type, realpath($filename), '');
$width_ = pdf_get_value($this->_pdf, 'imagewidth', $image);
$height_ = pdf_get_value($this->_pdf, 'imageheight', $image);
$outputWidth = ($width !== false ? $width : $width_);
$outputHeight = ($height !== false ? $height : $height_);
if (!is_array($alignment)) {
$alignment = array('vertical' => 'top', 'horizontal' => 'left');
}
if (!isset($alignment['vertical'])) {
$alignment['vertical'] = 'top';
}
if (!isset($alignment['horizontal'])) {
$alignment['horizontal'] = 'left';
}
if ($alignment['horizontal'] == 'right') {
$x -= $outputWidth;
} elseif ($alignment['horizontal'] == 'center') {
$x -= $outputWidth / 2;
}
if ($alignment['vertical'] == 'top') {
$y += $outputHeight;
} elseif ($alignment['vertical'] == 'center') {
$y += $outputHeight / 2;
}
if (($width === false) && ($height === false)) {
$scale = 1;
} else {
$scale = max(($height/$height_), ($width/$width_));
}
pdf_place_image($this->_pdf, $image, $this->_getX($x), $this->_getY($y), $scale);
pdf_close_image($this->_pdf, $image);
parent::image($params);
}
/**
* Output the result of the canvas
*
* @param array $param Parameter array
* @abstract
*/
function show($param = false)
{
parent::show($param);
pdf_end_page($this->_pdf);
pdf_close($this->_pdf);
$buf = pdf_get_buffer($this->_pdf);
$len = strlen($buf);
header('Content-type: application/pdf');
header('Content-Length: ' . $len);
header('Content-Disposition: inline; filename=image_graph.pdf');
print $buf;
pdf_delete($this->_pdf);
}
/**
* Output the result of the canvas
*
* @param array $param Parameter array
* @abstract
*/
function save($param = false)
{
parent::save($param);
pdf_end_page($this->_pdf);
pdf_close($this->_pdf);
$buf = pdf_get_buffer($this->_pdf);
$len = strlen($buf);
$fp = @fopen($param['filename'], 'wb');
if ($fp) {
fwrite($fp, $buf, strlen($buf));
fclose($fp);
}
pdf_delete($this->_pdf);
}
/**
* Get a canvas specific HTML tag.
*
* This method implicitly saves the canvas to the filename in the
* filesystem path specified and parses it as URL specified by URL path
*
* Parameter array:
* 'filename': string
* 'filepath': string Path to the file on the file system. Remember the final slash
* 'urlpath': string Path to the file available through an URL. Remember the final slash
* 'title': string The url title
*/
function toHtml($params)
{
parent::toHtml($params);
return '<a href="' . $params['urlpath'] . $params['filename'] . '">' . $params['title'] . '</a>';
}
/**
* Check which major version of PDFlib is installed
*
* @return int The mahor version number of PDFlib
* @access private
*/
function _version()
{
$result = false;
if (function_exists('pdf_get_majorversion')) {
$version = pdf_get_majorversion();
} else {
ob_start();
phpinfo(8);
$php_info = ob_get_contents();
ob_end_clean();
if (ereg("<td[^>]*>PDFlib GmbH Version *<\/td><td[^>]*>([^<]*)<\/td>",
$php_info, $result))
{
$version = $result[1];
}
}
if (ereg('([0-9]{1,2})\.[0-9]{1,2}(\.[0-9]{1,2})?', trim($version), $result)) {
return $result[1];
} else {
return 0;
}
}
}
?>
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