/**
* Create the canvas.
*
* Parameters available:
*
* 'width' The width of the graph on the canvas
*
* 'height' The height of the graph on the canvas
*
* 'left' The left offset of the graph on the canvas
*
* 'top' The top offset of the graph on the canvas
*
* 'usemap' Initialize an image map
*
* @param array $params Parameter array
* @abstract
*/
function __construct($params)
{
parent::__construct($params);
if (isset($params['usemap']) && $params['usemap'] === true) {
$this->_imageMap =& Image_Canvas::factory('ImageMap', array('left' => $this->_left, 'top' => $this->_top, 'width' => $this->_width, 'height' => $this->_height));
}
}
/**
* Create the SVG canvas.
*
* Parameters available:
*
* 'width' The width of the graph
*
* 'height' The height of the graph
*
* @param array $param Parameter array
*/
function __construct($param)
{
parent::__construct($param);
$this->_reset();
}
/**
* Create the PDF canvas.
*
* Parameters available:
*
* 'page' Specify the page/paper format for the graph's page, available
* formats are: A0, A1, A2, A3, A4, A5, A6, B5, letter, legal, ledger,
* 11x17, cd_front, inlay, inlay_nosides
*
* 'align' Alignment of the graph on the page, available options are:
* topleft, topcenter, topright, leftcenter, center, rightcenter,
* leftbottom, centerbottom, rightbottom
*
* 'orientation' Specifies the paper orientation, default is 'portrait' and
* 'landscape' is also supported.
*
* 'creator' The creator tag of the PDF/graph
*
* 'author' The author tag of the PDF/graph
*
* 'title' The title tag of the PDF/graph
*
* 'width' The width of the graph on the page
*
* 'height' The height of the graph on the page
*
* 'left' The left offset of the graph on the page
*
* 'top' The top offset of the graph on the page
*
* 'filename' The PDF file to open/add page to, using 'filename' requires
* the commercial version of PDFlib (http://www.pdflib.com/), this has for
* obvious ($ 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 $param Parameter array
*/
function __construct($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 = $w;
}
parent::__construct($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();
}