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

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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Class for handling output in SVG format.
*
* 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: SVG.php,v 1.17 2007/06/22 20:15:35 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';
/**
* SVG 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_SVG extends Image_Canvas
{
/**
* The SVG elements
* @var string
* @access private
*/
var $_elements = '';
/**
* The SVG defines
* @var string
* @access private
*/
var $_defs = '';
/**
* The current indention level
* @var string
* @access private
*/
var $_indent = ' ';
/**
* A unieuq id counter
* @var int
* @access private
*/
var $_id = 1;
/**
* The current group ids
* @var array
* @access private
*/
var $_groupIDs = array();
/**
* The XML encoding (default iso-8859-1)
* @var string
* @access private
*/
var $_encoding = 'iso-8859-1';
/**
* Create the SVG canvas.
*
* Parameters available:
*
* 'width' The width of the graph
*
* 'height' The height of the graph
*
* 'encoding' The encoding of the SVG document
*
* @param array $param Parameter array
*/
function Image_Canvas_SVG($params)
{
parent::Image_Canvas($params);
$this->_reset();
if (isset($params['encoding'])) {
$this->_encoding = $params['encoding'];
}
}
/**
* Add a SVG "element" to the output
*
* @param string $element The element
* @access private
*/
function _addElement($element, $params = array()) {
$elementdata = $this->_indent . $element . "\n";
if (isset($params['url'])) {
$url = $params['url'];
$target = (isset($params['target']) ? $params['target'] : false);
$alt = (isset($params['alt']) ? $params['alt'] : false);
$tags = '';
if (isset($params['htmltags'])) {
foreach ($params['htmltags'] as $key => $value) {
$tags .= ' ';
if (strpos($value, '"') >= 0) {
$tags .= $key . '=\'' . $value . '\'';
} else {
$tags .= $key . '="' . $value . '"';
}
}
}
$elementdata =
$this->_indent . '<a xlink:href="' . $url . '"' . ($target ? ' target="' . $target . '"' : '') . '>' . "\n" .
' ' . $elementdata .
$this->_indent . '</a>' . "\n";
}
$this->_elements .= $elementdata;
}
/**
* Add a SVG "define" to the output
*
* @param string $def The define
* @access private
*/
function _addDefine($def) {
$this->_defs .= ' ' . $def . "\n";
}
/**
* Get the color index for the RGB color
*
* @param int $color The color
* @return int A SVG compatible color
* @access private
*/
function _color($color = false)
{
if ($color === false) {
return 'transparent';
} else {
$color = Image_Canvas_Color::color2RGB($color);
return 'rgb(' . $color[0] . ',' . $color[1] . ',' . $color[2] . ')';
}
}
/**
* Get the opacity for the RGB color
*
* @param int $color The color
* @return int A SVG compatible opacity value
* @access private
*/
function _opacity($color = false)
{
if ($color === false) {
return false;
} else {
$color = Image_Canvas_Color::color2RGB($color);
if ($color[3] != 255) {
return sprintf('%0.1f', $color[3]/255);
} else {
return false;
}
}
}
/**
* Get the SVG applicable linestyle
*
* @param mixed $lineStyle The line style to return, false if the one
* explicitly set
* @return mixed A SVG compatible linestyle
* @access private
*/
function _getLineStyle($lineStyle = false)
{
$result = '';
if ($lineStyle === false) {
$lineStyle = $this->_lineStyle;
}
// TODO Linestyles (i.e. fx. dotted) does not work
if (($lineStyle != 'transparent') && ($lineStyle !== false)) {
$result = 'stroke-width:' . $this->_thickness . ';';
$result .= 'stroke:' .$this->_color($lineStyle) . ';';
if ($opacity = $this->_opacity($lineStyle)) {
$result .= 'stroke-opacity:' . $opacity . ';';
}
}
return $result;
}
/**
* Get the SVG applicable fillstyle
*
* @param mixed $fillStyle The fillstyle to return, false if the one
* explicitly set
* @return mixed A SVG compatible fillstyle
* @access private
*/
function _getFillStyle($fillStyle = false)
{
$result = '';
if ($fillStyle === false) {
$fillStyle = $this->_fillStyle;
}
if (is_array($fillStyle)) {
if ($fillStyle['type'] == 'gradient') {
$id = 'gradient_' . ($this->_id++);
$startColor = $this->_color($fillStyle['start']);
$endColor = $this->_color($fillStyle['end']);
$startOpacity = $this->_opacity($fillStyle['start']);
$endOpacity = $this->_opacity($fillStyle['end']);
switch ($fillStyle['direction']) {
case 'horizontal':
case 'horizontal_mirror':
$x1 = '0%';
$y1 = '0%';
$x2 = '100%';
$y2 = '0%';
break;
case 'vertical':
case 'vertical_mirror':
$x1 = '0%';
$y1 = '100%';
$x2 = '0%';
$y2 = '0%';
break;
case 'diagonal_tl_br':
$x1 = '0%';
$y1 = '0%';
$x2 = '100%';
$y2 = '100%';
break;
case 'diagonal_bl_tr':
$x1 = '0%';
$y1 = '100%';
$x2 = '100%';
$y2 = '0%';
break;
case 'radial':
$cx = '50%';
$cy = '50%';
$r = '100%';
$fx = '50%';
$fy = '50%';
break;
}
if ($fillStyle['direction'] == 'radial') {
$this->_addDefine(
'<radialGradient id="' . $id . '" cx="' .
$cx .'" cy="' . $cy .'" r="' . $r .'" fx="' .
$fx .'" fy="' . $fy .'">'
);
$this->_addDefine(
' <stop offset="0%" style="stop-color:' .
$startColor. ';' . ($startOpacity ? 'stop-opacity:' .
$startOpacity . ';' : ''). '"/>'
);
$this->_addDefine(
' <stop offset="100%" style="stop-color:' .
$endColor. ';' . ($endOpacity ? 'stop-opacity:' .
$endOpacity . ';' : ''). '"/>'
);
$this->_addDefine(
'</radialGradient>'
);
} elseif (($fillStyle['direction'] == 'vertical_mirror') ||
($fillStyle['direction'] == 'horizontal_mirror'))
{
$this->_addDefine(
'<linearGradient id="' . $id . '" x1="' .
$x1 .'" y1="' . $y1 .'" x2="' . $x2 .'" y2="' .
$y2 .'">'
);
$this->_addDefine(
' <stop offset="0%" style="stop-color:' .
$startColor. ';' . ($startOpacity ? 'stop-opacity:' .
$startOpacity . ';' : ''). '"/>'
);
$this->_addDefine(
' <stop offset="50%" style="stop-color:' .
$endColor. ';' . ($endOpacity ? 'stop-opacity:' .
$endOpacity . ';' : ''). '"/>'
);
$this->_addDefine(
' <stop offset="100%" style="stop-color:' .
$startColor. ';' . ($startOpacity ? 'stop-opacity:' .
$startOpacity . ';' : ''). '"/>'
);
$this->_addDefine(
'</linearGradient>'
);
} else {
$this->_addDefine(
'<linearGradient id="' . $id . '" x1="' .
$x1 .'" y1="' . $y1 .'" x2="' . $x2 .'" y2="' .
$y2 .'">'
);
$this->_addDefine(
' <stop offset="0%" style="stop-color:' .
$startColor. ';' . ($startOpacity ? 'stop-opacity:' .
$startOpacity . ';' : ''). '"/>'
);
$this->_addDefine(
' <stop offset="100%" style="stop-color:' .
$endColor. ';' . ($endOpacity ? 'stop-opacity:' .
$endOpacity . ';' : ''). '"/>'
);
$this->_addDefine(
'</linearGradient>'
);
}
return 'fill:url(#' . $id . ');';
}
} elseif (($fillStyle != 'transparent') && ($fillStyle !== false)) {
$result = 'fill:' . $this->_color($fillStyle) . ';';
if ($opacity = $this->_opacity($fillStyle)) {
$result .= 'fill-opacity:' . $opacity . ';';
}
return $result;
} else {
return 'fill:none;';
}
}
/**
* Sets an image that should be used for filling
*
* @param string $filename The filename of the image to fill with
*/
function setFillImage($filename)
{
}
/**
* Sets a gradient fill
*
* @param array $gradient Gradient fill options
*/
function setGradientFill($gradient)
{
$this->_fillStyle = $gradient;
$this->_fillStyle['type'] = 'gradient';
}
/**
* Sets the font options.
*
* The $font array may have the following entries:
* 'type' = 'ttf' (TrueType) or omitted for default<br>
* If 'type' = 'ttf' then the following can be specified<br>
* 'size' = size in pixels<br>
* 'angle' = the angle with which to write the text
* 'file' = the .ttf file (either the basename, filename or full path)
*
* @param array $font The font options.
*/
function setFont($fontOptions)
{
parent::setFont($fontOptions);
if (!isset($this->_font['size'])) {
$this->_font['size'] = 10;
}
}
/**
* 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)
{
$x0 = $this->_getX($params['x0']);
$y0 = $this->_getY($params['y0']);
$x1 = $this->_getX($params['x1']);
$y1 = $this->_getY($params['y1']);
$color = (isset($params['color']) ? $params['color'] : false);
$attrs = (isset($params['attrs']) && is_array($params['attrs'])) ? $this->_getAttributes($params['attrs']) : null;
$style = $this->_getLineStyle($color) . $this->_getFillStyle('transparent');
if ($style != '') {
$this->_addElement(
'<line ' .
'x1="' . round($x0) . '" ' .
'y1="' . round($y0) . '" ' .
'x2="' . round($x1) . '" ' .
'y2="' . round($y1) . '" ' .
'style="' . $style . '"' .
($attrs ? ' ' . $attrs : '') .
'/>',
$params
);
}
parent::line($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']) ? $params['line'] : false);
if (!$connectEnds) {
$fillColor = 'transparent';
}
$style = $this->_getLineStyle($lineColor) . $this->_getFillStyle($fillColor);
$attrs = (isset($params['attrs']) && is_array($params['attrs'])) ? $this->_getAttributes($params['attrs']) : null;
$first = true;
$spline = false;
$lastpoint = false;
foreach($this->_polygon as $point) {
if ($first) {
$points = 'M';
} elseif (!$spline) {
$points .= ' L';
}
if (($spline) && ($lastpoint !== false)) {
$points .= ' ' .round($lastpoint['P1X']) . ',' . round($lastpoint['P1Y']) . ' ' .
round($lastpoint['P2X']) . ',' . round($lastpoint['P2Y']);
}
$points .= ' ' . round($point['X']) . ',' . round($point['Y']);
if ((isset($point['P1X'])) && (isset($point['P1Y'])) &&
(isset($point['P2X'])) && (isset($point['P2Y'])))
{
if (($first) || (!$spline)) {
$points .= ' C';
}
$lastpoint = $point;
$spline = true;
} else {
$spline = false;
}
$first = false;
}
if ($connectEnds) {
$points .= ' Z';
}
$this->_addElement(
'<path ' .
'd="' . $points . '" ' .
'style="' . $style . '"' .
($attrs ? ' ' . $attrs : '') .
'/>',
$params
);
parent::polygon($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)
{
$x0 = min($this->_getX($params['x0']), $this->_getX($params['x1']));
$y0 = min($this->_getY($params['y0']), $this->_getY($params['y1']));
$x1 = max($this->_getX($params['x0']), $this->_getX($params['x1']));
$y1 = max($this->_getY($params['y0']), $this->_getY($params['y1']));
$fillColor = (isset($params['fill']) ? $params['line'] : false);
$lineColor = (isset($params['line']) ? $params['line'] : false);
$attrs = (isset($params['attrs']) && is_array($params['attrs'])) ? $this->_getAttributes($params['attrs']) : null;
$style = $this->_getLineStyle($lineColor) . $this->_getFillStyle($fillColor);
if ($style != '') {
$this->_addElement(
'<rect ' .
'x="' . round($x0) . '" ' .
'y="' . round($y0) . '" ' .
'width="' . round(abs($x1 - $x0)) . '" ' .
'height="' . round(abs($y1 - $y0)) . '" ' .
'style="' . $style . '"' .
($attrs ? ' ' . $attrs : '') .
'/>',
$params
);
}
parent::rectangle($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);
$attrs = (isset($params['attrs']) && is_array($params['attrs'])) ? $this->_getAttributes($params['attrs']) : null;
$style = $this->_getLineStyle($lineColor) . $this->_getFillStyle($fillColor);
if ($style != '') {
$this->_addElement(
'<ellipse ' .
'cx="' . round($x) . '" ' .
'cy="' . round($y) . '" ' .
'rx="' . round($rx) . '" ' .
'ry="' . round($ry) . '" ' .
'style="' . $style . '"' .
($attrs ? ' ' . $attrs : '') .
'/>',
$params
);
}
parent::ellipse($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']);
$srx = (isset($params['srx']) ? $this->_getX($params['srx']) : false);
$sry = (isset($params['sry']) ? $this->_getX($params['sry']) : false);
$fillColor = (isset($params['fill']) ? $params['line'] : false);
$lineColor = (isset($params['line']) ? $params['line'] : false);
$attrs = (isset($params['attrs']) && is_array($params['attrs'])) ? $this->_getAttributes($params['attrs']) : null;
$dv = max($v2, $v1) - min($v2, $v1);
if ($dv >= 360) {
$this->ellipse($params);
}
else {
$style = $this->_getLineStyle($lineColor) . $this->_getFillStyle($fillColor);
if ($style != '') {
$x1 = ($x + $rx * cos(deg2rad(min($v1, $v2) % 360)));
$y1 = ($y + $ry * sin(deg2rad(min($v1, $v2) % 360)));
$x2 = ($x + $rx * cos(deg2rad(max($v1, $v2) % 360)));
$y2 = ($y + $ry * sin(deg2rad(max($v1, $v2) % 360)));
$this->_addElement(
'<path d="' .
'M' . round($x) . ',' . round($y) . ' ' .
'L' . round($x1) . ',' . round($y1) . ' ' .
'A' . round($rx) . ',' . round($ry) . ($dv > 180 ? ' 0 1,1 ' : ' 0 0,1 ') .
round($x2) . ',' . round($y2) . ' ' .
'Z" ' .
'style="' . $style . '"' .
($attrs ? ' ' . $attrs : '') .
'/>',
$params
);
}
parent::pieslice($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 ((isset($this->_font['vertical'])) && ($this->_font['vertical'])) {
return $this->_font['size'];
} else {
return round($this->_font['size'] * 0.7 * strlen($text));
}
}
/**
* 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($this->_font['vertical'])) && ($this->_font['vertical'])) {
return round($this->_font['size'] * 0.7 * strlen($text));
} else {
return $this->_font['size'];
}
}
/**
* Writes text
*
* Parameter array:
* 'x': int X-point of text
* 'y': int Y-point of text
* 'text': string The text to add
* 'alignment': array [optional] Alignment
* 'color': mixed [optional] The color of the text
*/
function addText($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);
$attrs = (isset($params['attrs']) && is_array($params['attrs'])) ? $this->_getAttributes($params['attrs']) : null;
$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';
}
$align = '';
if ((isset($this->_font['vertical'])) && ($this->_font['vertical'])) {
// $align .= 'writing-mode: tb-rl;';
if ($alignment['vertical'] == 'bottom') {
$align .= 'text-anchor:end;';
//$y = $y + $textHeight;
} elseif ($alignment['vertical'] == 'center') {
//$y = $y + ($textHeight / 2);
$align .= 'text-anchor:middle;';
}
} else {
if ($alignment['horizontal'] == 'right') {
$align .= 'text-anchor:end;';
} elseif ($alignment['horizontal'] == 'center') {
$align .= 'text-anchor:middle;';
}
if ($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'];
}
$textColor = $this->_color($color);
$textOpacity = $this->_opacity($color);
$this->_addElement(
'<g transform="translate(' . round($x) . ', ' . round($y) . ')">' . "\n" .
$this->_indent . ' <text ' .
'x="0" ' .
'y="0" ' .
(isset($this->_font['angle']) && ($this->_font['angle'] > 0) ?
'transform="rotate(' . (($this->_font['angle'] + 180) % 360) . ')" ' :
''
) .
'style="' .
(isset($this->_font['name']) ?
'font-family:' . $this->_font['name'] . ';' : '') .
'font-size:' . $this->_font['size'] . 'px;fill:' .
$textColor . ($textOpacity ? ';fill-opacity:' .
$textOpacity :
''
) . ';' . $align . '"' .
($attrs ? ' ' . $attrs : '') .
'>' .
htmlspecialchars($text) .
'</text>' . "\n" .
$this->_indent . '</g>',
$params
);
parent::addText($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'];
$attrs = (isset($params['attrs']) && is_array($params['attrs'])) ? $this->_getAttributes($params['attrs']) : null;
list($width, $height, $type, $attr) = getimagesize($filename);
$width = (isset($params['width']) ? $params['width'] : $width);
$height = (isset($params['height']) ? $params['height'] : $height);
$alignment = (isset($params['alignment']) ? $params['alignment'] : false);
$file = fopen($filename, 'rb');
$filedata = fread($file, filesize($filename));
fclose($file);
$data = 'data:' . image_type_to_mime_type($type) . ';base64,' . base64_encode($filedata);
$this->_addElement(
'<image xlink:href="' . $data . '" x="' . $x . '" y="' . $y . '"' .
($width ? ' width="' . $width . '"' : '') .
($height ? ' height="' . $height . '"' : '') .
($attrs ? ' ' . $attrs : '') .
' preserveAspectRatio="none"/>',
$params
);
parent::image($params);
}
/**
* Start a group.
*
* What this does, depends on the canvas/format.
*
* @param string $name The name of the group
*/
function startGroup($name = false)
{
$name = strtolower(str_replace(' ', '_', $name));
if (in_array($name, $this->_groupIDs)) {
$name .= $this->_id;
$this->_id++;
}
$this->_groupIDs[] = $name;
$this->_addElement('<g id="' . htmlspecialchars($name) . '">');
$this->_indent .= ' ';
}
/**
* End the "current" group.
*
* What this does, depends on the canvas/format.
*/
function endGroup()
{
$this->_indent = substr($this->_indent, 0, -4);
$this->_addElement('</g>');
}
/**
* Output the result of the canvas
*
* @param array $param Parameter array
*/
function show($param = false)
{
parent::show($param);
$attrs = (isset($param['attrs']) && is_array($param['attrs'])) ? $this->_getAttributes($param['attrs']) : null;
$output = $this->getData($param);
header('Content-Type: image/svg+xml');
header('Content-Disposition: inline; filename = "' . basename($_SERVER['PHP_SELF'], '.php') . '.svg"');
print $output;
}
/**
* Output the result of the canvas
*
* @param array $param Parameter array
*/
function save($param = false)
{
parent::save($param);
$output = $this->getData($param);
$file = fopen($param['filename'], 'w+');
fwrite($file, $output);
fclose($file);
}
/**
* Get SVG data
*
* @param array $param Parameter array
*
* @return string
*/
function getData($param = false)
{
$attrs = (isset($param['attrs']) && is_array($param['attrs'])) ? $this->_getAttributes($param['attrs']) : null;
return '<?xml version="1.0" encoding="'. $this->_encoding . '"?>' . "\n" .
'<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN"' . "\n\t" .
' "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">' . "\n" .
'<svg width="' . $this->_width . '" height="' . $this->_height .
'" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"' .
($attrs ? ' ' . $attrs : '') .
'>' . "\n" .
($this->_defs ?
' <defs>' . "\n" .
$this->_defs .
' </defs>' . "\n" :
''
) .
$this->_elements .
'</svg>';
}
/**
* Set clipping to occur
*
* Parameter array:
*
* 'x0': int X point of Upper-left corner
* 'y0': int X point of Upper-left corner
* 'x1': int X point of lower-right corner
* 'y1': int Y point of lower-right corner
*/
function setClipping($params = false)
{
if ($params === false) {
$this->_addElement('</g>');
}
else {
$group = "clipping_" . $this->_id;
$this->_id++;
$this->_addElement('<g clip-path="url(#' . $group . ')">');
$this->_addDefine('<clipPath id="' . $group . '">');
$this->_addDefine(' <path d="' .
'M' . $this->_getX($params['x0']) . ' ' . $this->_getY($params['y0']) .
' H' . $this->_getX($params['x1']) .
' V' . $this->_getY($params['y1']) .
' H' . $this->_getX($params['x0']) .
' Z"/>');
$this->_addDefine('</clipPath>');
}
}
/**
* Get a canvas specific HTML tag.
*
* This method implicitly saves the canvas to the filename in the
* filesystem path specified and parses it as URL specified by URL path
*
* Parameter array:
* 'filename': string
* 'filepath': string Path to the file on the file system. Remember the final slash
* 'urlpath': string Path to the file available through an URL. Remember the final slash
* 'width': int The width in pixels
* 'height': int The height in pixels
*/
function toHtml($params)
{
parent::toHtml($params);
return '<embed src="' . $params['urlpath'] . $params['filename'] . '" width=' . $params['width'] . ' height=' . $params['height'] . ' type="image/svg+xml">';
}
/**
* Converts array of attributes to string
*
* @param array $attrs Attributes array
* @return array
*/
function _getAttributes($attrs)
{
$string = '';
foreach ($attrs as $key => $value) {
$string .= ' ' . $key . '="' . $value . '"';
}
return $string;
}
}
?>