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<?php
require_once dirname(__FILE__) . '/../Image.php';
require_once 'XML/SVG.php';
/**
* This class implements the Horde_Image:: API for SVG.
*
* $Horde: framework/Image/Image/svg.php,v 1.31.10.6 2006/01/01 21:28:22 jan Exp $
*
* Copyright 2002-2006 Chuck Hagenbuch <chuck@horde.org>
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
*
* @author Chuck Hagenbuch <chuck@horde.org>
* @since Horde 3.0
* @package Horde_Image
*/
class Horde_Image_svg extends Horde_Image {
var $_svg;
/**
* Capabilites of this driver.
*
* @var array
*/
var $_capabilities = array('canvas');
function Horde_Image_svg($params)
{
parent::Horde_Image($params);
$this->_svg = &new XML_SVG_Document(array('width' => $this->_width,
'height' => $this->_height));
}
function getContentType()
{
return 'image/svg+xml';
}
function getLink($url, $title = '')
{
}
function display()
{
$this->_svg->printElement();
}
/**
* Return the raw data for this image.
*
* @return string The raw image data.
*/
function raw()
{
return $this->_svg->bufferObject();
}
function getFont($font)
{
return $font;
}
function _createSymbol($s, $id)
{
$s->setParam('id', $id);
$defs = &new XML_SVG_Defs();
$defs->addChild($s);
$this->_svg->addChild($defs);
}
function _createDropShadow($id = 'dropShadow')
{
$defs = &new XML_SVG_Defs();
$filter = &new XML_SVG_Filter(array('id' => $id));
$filter->addPrimitive('GaussianBlur', array('in' => 'SourceAlpha',
'stdDeviation' => 2,
'result' => 'blur'));
$filter->addPrimitive('Offset', array('in' => 'blur',
'dx' => 4,
'dy' => 4,
'result' => 'offsetBlur'));
$merge = &new XML_SVG_FilterPrimitive('Merge');
$merge->addMergeNode('offsetBlur');
$merge->addMergeNode('SourceGraphic');
$filter->addChild($merge);
$defs->addChild($filter);
$this->_svg->addChild($defs);
}
/**
* Draws a text string on the image in a specified location, with
* the specified style information.
*
* @param string $text The text to draw.
* @param integer $x The left x coordinate of the start of the text string.
* @param integer $y The top y coordinate of the start of the text string.
* @param string $font The font identifier you want to use for the text.
* @param string $color The color that you want the text displayed in.
* @param integer $direction An integer that specifies the orientation of the text.
*/
function text($string, $x, $y, $font = 'monospace', $color = 'black', $direction = 0)
{
$height = 12;
$style = 'font-family:' . $font . ';font-height:' . $height . 'px;fill:' . $this->getHexColor($color) . ';text-anchor:start;';
$transform = 'rotate(' . $direction . ',' . $x . ',' . $y . ')';
$this->_svg->addChild(new XML_SVG_Text(array('text' => $string,
'x' => (int)$x,
'y' => (int)$y + $height,
'transform' => $transform,
'style' => $style)));
}
/**
* Draw a circle.
*
* @param integer $x The x coordinate of the centre.
* @param integer $y The y coordinate of the centre.
* @param integer $r The radius of the circle.
* @param string $color The line color of the circle.
* @param string $fill The color to fill the circle.
*/
function circle($x, $y, $r, $color, $fill = null)
{
if (!empty($fill)) {
$style = 'fill:' . $this->getHexColor($fill) . '; ';
} else {
$style = 'fill:none;';
}
$style .= 'stroke:' . $this->getHexColor($color) . '; stroke-width:1';
$this->_svg->addChild(new XML_SVG_Circle(array('cx' => $x,
'cy' => $y,
'r' => $r,
'style' => $style)));
}
/**
* Draw a polygon based on a set of vertices.
*
* @param array $vertices An array of x and y labeled arrays
* (eg. $vertices[0]['x'], $vertices[0]['y'], ...).
* @param string $color The color you want to draw the polygon with.
* @param string $fill The color to fill the polygon.
*/
function polygon($verts, $color, $fill = null)
{
if (!empty($fill)) {
$style = 'fill:' . $this->getHexColor($fill) . '; ';
} else {
$style = 'fill:none;';
}
$style .= 'stroke:' . $this->getHexColor($color) . '; stroke-width:1';
$points = '';
foreach ($verts as $v) {
$points .= $v['x'] . ',' . $v['y'] . ' ';
}
$points = trim($points);
$this->_svg->addChild(new XML_SVG_Polygon(array('points' => $points,
'style' => $style)));
}
/**
* Draw a rectangle.
*
* @param integer $x The left x-coordinate of the rectangle.
* @param integer $y The top y-coordinate of the rectangle.
* @param integer $width The width of the rectangle.
* @param integer $height The height of the rectangle.
* @param string $color The line color of the rectangle.
* @param string $fill The color to fill the rectangle.
*/
function rectangle($x, $y, $width, $height, $color, $fill = null)
{
if (!empty($fill)) {
$style = 'fill:' . $this->getHexColor($fill) . '; ';
} else {
$style = 'fill:none;';
}
$style .= 'stroke:' . $this->getHexColor($color) . '; stroke-width:1';
$this->_svg->addChild(new XML_SVG_Rect(array('x' => $x,
'y' => $y,
'width' => $width,
'height' => $height,
'style' => $style)));
}
/**
* Draw a rectangle.
*
* @param integer $x The left x-coordinate of the rectangle.
* @param integer $y The top y-coordinate of the rectangle.
* @param integer $width The width of the rectangle.
* @param integer $height The height of the rectangle.
* @param integer $round The width of the corner rounding.
* @param string $color The line color of the rectangle.
* @param string $fill The color to fill the rectangle.
*/
function roundedRectangle($x, $y, $width, $height, $round, $color, $fill)
{
if (!empty($fill)) {
$style = 'fill:' . $this->getHexColor($fill) . '; ';
} else {
$style = 'fill:none;';
}
$style .= 'stroke:' . $this->getHexColor($color) . '; stroke-width:1';
$this->_svg->addChild(new XML_SVG_Rect(array('x' => $x,
'y' => $y,
'rx' => $round,
'ry' => $round,
'width' => $width,
'height' => $height,
'style' => $style)));
}
/**
* Draw a line.
*
* @param integer $x0 The x coordinate of the start.
* @param integer $y0 The y coordinate of the start.
* @param integer $x1 The x coordinate of the end.
* @param integer $y1 The y coordinate of the end.
* @param string $color The line color.
* @param string $width The width of the line.
*/
function line($x1, $y1, $x2, $y2, $color = 'black', $width = 1)
{
$style = 'stroke:' . $this->getHexColor($color) . '; stroke-width:' . (int)$width;
$this->_svg->addChild(new XML_SVG_Line(array('x1' => $x1,
'y1' => $y1,
'x2' => $x2,
'y2' => $y2,
'style' => $style)));
}
/**
* Draw a dashed line.
*
* @param integer $x0 The x coordinate of the start.
* @param integer $y0 The y coordinate of the start.
* @param integer $x1 The x coordinate of the end.
* @param integer $y1 The y coordinate of the end.
* @param string $color The line color.
* @param string $width The width of the line.
* @param integer $dash_length The length of a dash on the dashed line
* @param integer $dash_space The length of a space in the dashed line
*/
function dashedLine($x1, $y1, $x2, $y2, $color = 'black', $width = 1, $dash_length = 2, $dash_space = 2)
{
$style = 'stroke:' . $this->getHexColor($color) . '; stroke-width:' . (int)$width . '; stroke-dasharray:' . $dash_length . ',' . $dash_space . ';';
$this->_svg->addChild(new XML_SVG_Line(array('x1' => $x1,
'y1' => $y1,
'x2' => $x2,
'y2' => $y2,
'style' => $style)));
}
/**
* Draw a polyline (a non-closed, non-filled polygon) based on a
* set of vertices.
*
* @param array $vertices An array of x and y labeled arrays
* (eg. $vertices[0]['x'], $vertices[0]['y'], ...).
* @param string $color The color you want to draw the line with.
* @param string $width The width of the line.
*/
function polyline($verts, $color, $width = 1)
{
$style = 'stroke:' . $this->getHexColor($color) . '; stroke-width:' . $width . ';fill:none;';
// Calculate the path entry.
$path = '';
$first = true;
foreach ($verts as $vert) {
if ($first) {
$first = false;
$path .= 'M ' . $vert['x'] . ',' . $vert['y'];
} else {
$path .= ' L ' . $vert['x'] . ',' . $vert['y'];
}
}
$this->_svg->addChild(new XML_SVG_Path(array('d' => $path,
'style' => $style)));
}
/**
* Draw an arc.
*
* @param integer $x The x coordinate of the centre.
* @param integer $y The y coordinate of the centre.
* @param integer $r The radius of the arc.
* @param integer $start The start angle of the arc.
* @param integer $end The end angle of the arc.
* @param string $color The line color of the arc.
* @param string $fill The fill color of the arc (defaults to none).
*/
function arc($x, $y, $r, $start, $end, $color = 'black', $fill = null)
{
if (!empty($fill)) {
$style = 'fill:' . $this->getHexColor($fill) . '; ';
} else {
$style = 'fill:none;';
}
$style .= 'stroke:' . $this->getHexColor($color) . '; stroke-width:1';
$mid = round(($start + $end) / 2);
// Calculate the path entry.
$path = '';
// If filled, draw the outline.
if (!empty($fill)) {
// Start at the center of the ellipse the arc is on.
$path .= "M $x,$y ";
// Draw out to ellipse edge.
list($arcX, $arcY) = $this->_circlePoint($start, $r * 2);
$path .= 'L ' . round($x + $arcX) . ',' .
round($y + $arcY) . ' ';
}
// Draw arcs.
list($arcX, $arcY) = $this->_circlePoint($mid, $r * 2);
$path .= "A $r,$r 0 0 1 " .
round($x + $arcX) . ',' .
round($y + $arcY) . ' ';
list($arcX, $arcY) = $this->_circlePoint($end, $r * 2);
$path .= "A $r,$r 0 0 1 " .
round($x + $arcX) . ',' .
round($y + $arcY) . ' ';
// If filled, close the outline.
if (!empty($fill)) {
$path .= 'Z';
}
$path = trim($path);
$this->_svg->addChild(new XML_SVG_Path(array('d' => $path,
'style' => $style)));
}
}
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