712 lines
19 KiB
PHP
712 lines
19 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Image_Canvas
|
||
|
|
*
|
||
|
|
* Canvas based creation of images to facilitate different output formats
|
||
|
|
*
|
||
|
|
* 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: Canvas.php,v 1.5 2005/09/30 18:59:35 nosey Exp $
|
||
|
|
* @link http://pear.php.net/pepr/pepr-proposal-show.php?id=212
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Specfies the path to the system location of font files.
|
||
|
|
*
|
||
|
|
* Remember trailing slash!
|
||
|
|
*
|
||
|
|
* This is set by default on Windows systems to %SystemRoot%\Fonts\
|
||
|
|
*/
|
||
|
|
if (!defined('IMAGE_CANVAS_SYSTEM_FONT_PATH')) {
|
||
|
|
if (isset($_SERVER['SystemRoot'])) {
|
||
|
|
define('IMAGE_CANVAS_SYSTEM_FONT_PATH', $_SERVER['SystemRoot'] . '/Fonts/');
|
||
|
|
} else {
|
||
|
|
/**
|
||
|
|
* @ignore
|
||
|
|
*/
|
||
|
|
define('IMAGE_CANVAS_SYSTEM_FONT_PATH', '');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Class for handling different output formats
|
||
|
|
*
|
||
|
|
* @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
|
||
|
|
* @abstract
|
||
|
|
*/
|
||
|
|
class Image_Canvas
|
||
|
|
{
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The leftmost pixel of the element on the canvas
|
||
|
|
* @var int
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_left = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The topmost pixel of the element on the canvas
|
||
|
|
* @var int
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_top = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The width of the graph
|
||
|
|
* @var int
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_width = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The height of the graph
|
||
|
|
* @var int
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_height = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Polygon vertex placeholder
|
||
|
|
* @var array
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_polygon = array();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The thickness of the line(s)
|
||
|
|
* @var int
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_thickness = 1;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The line style
|
||
|
|
* @var mixed
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_lineStyle = 'transparent';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The fill style
|
||
|
|
* @var mixed
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_fillStyle = 'transparent';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The font options
|
||
|
|
* @var array
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_font = array();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The default font
|
||
|
|
* @var array
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $_defaultFont = array('name' => 'Courier New', 'color' => 'black', 'size' => 9);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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
|
||
|
|
*
|
||
|
|
* @param array $params Parameter array
|
||
|
|
* @abstract
|
||
|
|
*/
|
||
|
|
function Image_Canvas($params)
|
||
|
|
{
|
||
|
|
if (isset($params['left'])) {
|
||
|
|
$this->_left = $params['left'];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isset($params['top'])) {
|
||
|
|
$this->_top = $params['top'];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isset($params['width'])) {
|
||
|
|
$this->_width = $params['width'];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isset($params['height'])) {
|
||
|
|
$this->_height = $params['height'];
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->setDefaultFont($this->_defaultFont);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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 floor($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 floor($this->_top + $y);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the width of the canvas
|
||
|
|
*
|
||
|
|
* @return int The width
|
||
|
|
*/
|
||
|
|
function getWidth()
|
||
|
|
{
|
||
|
|
return $this->_width;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the height of the canvas
|
||
|
|
*
|
||
|
|
* @return int The height
|
||
|
|
*/
|
||
|
|
function getHeight()
|
||
|
|
{
|
||
|
|
return $this->_height;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the thickness of the line(s) to be drawn
|
||
|
|
*
|
||
|
|
* @param int $thickness The actual thickness (in pixels)
|
||
|
|
*/
|
||
|
|
function setLineThickness($thickness)
|
||
|
|
{
|
||
|
|
$this->_thickness = $thickness;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the color of the line(s) to be drawn
|
||
|
|
*
|
||
|
|
* @param mixed $color The color of the line
|
||
|
|
*/
|
||
|
|
function setLineColor($color)
|
||
|
|
{
|
||
|
|
$this->_lineStyle = $color;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the style of the filling of drawn objects.
|
||
|
|
*
|
||
|
|
* This method gives simple access to setFillColor(), setFillImage() and
|
||
|
|
* setGradientFill()
|
||
|
|
*
|
||
|
|
* @param mixed $fill The fill style
|
||
|
|
*/
|
||
|
|
function setFill($fill)
|
||
|
|
{
|
||
|
|
if (is_array($fill)) {
|
||
|
|
$this->setGradientFill($fill);
|
||
|
|
} elseif (file_exists($fill)) {
|
||
|
|
$this->setFillImage($fill);
|
||
|
|
} else {
|
||
|
|
$this->setFillColor($fill);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the color of the filling of drawn objects
|
||
|
|
*
|
||
|
|
* @param mixed $color The fill color
|
||
|
|
*/
|
||
|
|
function setFillColor($color)
|
||
|
|
{
|
||
|
|
$this->_fillStyle = $color;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the font options.
|
||
|
|
*
|
||
|
|
* The $font array may have the following entries:
|
||
|
|
*
|
||
|
|
* 'name' The name of the font. This name must either be supported
|
||
|
|
* natively by the canvas or mapped to a font using the font-mapping scheme
|
||
|
|
*
|
||
|
|
* 'size' Size in pixels
|
||
|
|
*
|
||
|
|
* 'angle' The angle with which to write the text
|
||
|
|
*
|
||
|
|
* @param array $fontOptions The font options.
|
||
|
|
*/
|
||
|
|
function setFont($fontOptions)
|
||
|
|
{
|
||
|
|
$this->_font = $fontOptions;
|
||
|
|
|
||
|
|
if (!isset($this->_font['color'])) {
|
||
|
|
$this->_font['color'] = 'black';
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!(isset($this->_font['angle'])) || ($this->_font['angle'] === false)) {
|
||
|
|
$this->_font['angle'] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isset($this->_font['angle'])) {
|
||
|
|
if ((($this->_font['angle'] > 45) && ($this->_font['angle'] < 135)) ||
|
||
|
|
(($this->_font['angle'] > 225) && ($this->_font['angle'] < 315))
|
||
|
|
) {
|
||
|
|
$this->_font['vertical'] = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((!isset($this->_font['file'])) && (isset($this->_font['name']))) {
|
||
|
|
include_once 'Image/Canvas/Tool.php';
|
||
|
|
$this->_font['file'] = Image_Canvas_Tool::fontMap($this->_font['name']);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
function setClipping($params = false)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Sets the default font options.
|
||
|
|
*
|
||
|
|
* The $font array may have the following entries:
|
||
|
|
*
|
||
|
|
* 'name' The name of the font. This name must either be supported
|
||
|
|
* natively by the canvas or mapped to a font using the font-mapping scheme
|
||
|
|
*
|
||
|
|
* 'size' Size in pixels
|
||
|
|
*
|
||
|
|
* 'angle' The angle with which to write the text
|
||
|
|
*
|
||
|
|
* @param array $fontOptions The font options.
|
||
|
|
*/
|
||
|
|
function setDefaultFont($fontOptions)
|
||
|
|
{
|
||
|
|
$this->setFont($fontOptions);
|
||
|
|
$this->_defaultFont = $this->_font;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Resets the canvas.
|
||
|
|
*
|
||
|
|
* Includes fillstyle, linestyle, thickness and polygon
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _reset()
|
||
|
|
{
|
||
|
|
$this->_lineStyle = false;
|
||
|
|
$this->_fillStyle = false;
|
||
|
|
$this->_thickness = 1;
|
||
|
|
$this->_polygon = array();
|
||
|
|
$this->_font = $this->_defaultFont;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Draw a line end
|
||
|
|
*
|
||
|
|
* Parameter array:
|
||
|
|
* 'x': int X point
|
||
|
|
* 'y': int Y point
|
||
|
|
* 'end': string The end type of the end
|
||
|
|
* 'angle': int [optional] The angle with which to draw the end
|
||
|
|
* @param array $params Parameter array
|
||
|
|
*/
|
||
|
|
function drawEnd($params)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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
|
||
|
|
* 'end0': string [optional] The end type of end0 (the start)
|
||
|
|
* 'end1': string [optional] The end type of end1 (the end)
|
||
|
|
* 'size0': int [optional] The size of end0
|
||
|
|
* 'size1': int [optional] The size of end1
|
||
|
|
* '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']);
|
||
|
|
if (isset($params['end0'])) {
|
||
|
|
$angle = Image_Canvas_Tool::getAngle($x1, $y1, $x0, $y0);
|
||
|
|
$this->drawEnd(
|
||
|
|
array(
|
||
|
|
'end' => $params['end0'],
|
||
|
|
'x' => $params['x0'],
|
||
|
|
'y' => $params['y0'],
|
||
|
|
'angle' => $angle,
|
||
|
|
'color' => (isset($params['color0']) ? $params['color0'] : false),
|
||
|
|
'size' => $params['size0']
|
||
|
|
)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
if (isset($params['end1'])) {
|
||
|
|
$angle = Image_Canvas_Tool::getAngle($x0, $y0, $x1, $y1);
|
||
|
|
//print "<pre>"; var_dump($params, $angle); print "</pre>";
|
||
|
|
$this->drawEnd(
|
||
|
|
array(
|
||
|
|
'end' => $params['end1'],
|
||
|
|
'x' => $params['x1'],
|
||
|
|
'y' => $params['y1'],
|
||
|
|
'angle' => $angle,
|
||
|
|
'color' => (isset($params['color1']) ? $params['color1'] : false),
|
||
|
|
'size' => $params['size1']
|
||
|
|
)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
$this->_reset();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds vertex to a polygon
|
||
|
|
*
|
||
|
|
* Parameter array:
|
||
|
|
* 'x': int X point
|
||
|
|
* 'y': int Y point
|
||
|
|
* 'url': string [optional] URL to link the vertex to (must be used with 'map_vertices' in polygon() on a canvas that support image maps)
|
||
|
|
* 'alt': string [optional] Alternative text to show in the image map (must be used with 'map_vertices' in polygon() on a canvas that support image maps)
|
||
|
|
* 'target': string [optional] The link target on the image map (must be used with 'map_vertices' in polygon() on a canvas that support image maps)
|
||
|
|
* 'mapsize': int [optional] The size of the "map", i.e. the size of the hot spot (must be used with 'map_vertices' in polygon() on a canvas that support image maps)
|
||
|
|
* @param array $params Parameter array
|
||
|
|
*/
|
||
|
|
function addVertex($params)
|
||
|
|
{
|
||
|
|
$params['X'] = $this->_getX($params['x']);
|
||
|
|
$params['Y'] = $this->_getY($params['y']);
|
||
|
|
$this->_polygon[] = $params;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds "splined" vertex to a polygon
|
||
|
|
*
|
||
|
|
* Parameter array:
|
||
|
|
* 'x': int X point
|
||
|
|
* 'y': int Y point
|
||
|
|
* 'p1x': int X Control point 1
|
||
|
|
* 'p1y': int Y Control point 1
|
||
|
|
* 'p2x': int X Control point 2
|
||
|
|
* 'p2y': int Y Control point 2
|
||
|
|
* 'url': string [optional] URL to link the vertex to (must be used with 'map_vertices' in polygon() on a canvas that support image maps)
|
||
|
|
* 'alt': string [optional] Alternative text to show in the image map (must be used with 'map_vertices' in polygon() on a canvas that support image maps)
|
||
|
|
* 'target': string [optional] The link target on the image map (must be used with 'map_vertices' in polygon() on a canvas that support image maps)
|
||
|
|
* 'mapsize': int [optional] The size of the "map", i.e. the size of the hot spot (must be used with 'map_vertices' in polygon() on a canvas that support image maps)
|
||
|
|
* @param array $params Parameter array
|
||
|
|
*/
|
||
|
|
function addSpline($params)
|
||
|
|
{
|
||
|
|
$params['X'] = $this->_getX($params['x']);
|
||
|
|
$params['Y'] = $this->_getY($params['y']);
|
||
|
|
$params['P1X'] = $this->_getX($params['p1x']);
|
||
|
|
$params['P1Y'] = $this->_getY($params['p1y']);
|
||
|
|
$params['P2X'] = $this->_getX($params['p2x']);
|
||
|
|
$params['P2Y'] = $this->_getY($params['p2y']);
|
||
|
|
$this->_polygon[] = $params;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Draws a polygon
|
||
|
|
*
|
||
|
|
* 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)
|
||
|
|
{
|
||
|
|
$this->_reset();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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)
|
||
|
|
{
|
||
|
|
$this->_reset();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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)
|
||
|
|
{
|
||
|
|
$this->_reset();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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)
|
||
|
|
{
|
||
|
|
$this->_reset();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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)
|
||
|
|
{
|
||
|
|
$this->_reset();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Overlay image
|
||
|
|
*
|
||
|
|
* Parameter array:
|
||
|
|
* 'x': int X-point of overlayed image
|
||
|
|
* 'y': int Y-point of overlayed image
|
||
|
|
* 'filename': string The filename of the image to overlay
|
||
|
|
* 'width': int [optional] The width of the overlayed image (resizing if possible)
|
||
|
|
* 'height': int [optional] The height of the overlayed image (resizing if possible)
|
||
|
|
* 'alignment': array [optional] Alignment
|
||
|
|
*/
|
||
|
|
function image($params)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Start a group.
|
||
|
|
*
|
||
|
|
* What this does, depends on the canvas/format.
|
||
|
|
*
|
||
|
|
* @param string $name The name of the group
|
||
|
|
*/
|
||
|
|
function startGroup($name = false)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* End the "current" group.
|
||
|
|
*
|
||
|
|
* What this does, depends on the canvas/format.
|
||
|
|
*/
|
||
|
|
function endGroup()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Output the result of the canvas to the browser
|
||
|
|
*
|
||
|
|
* @param array $params Parameter array, the contents and meaning depends on the actual Canvas
|
||
|
|
* @abstract
|
||
|
|
*/
|
||
|
|
function show($params = false)
|
||
|
|
{
|
||
|
|
if ($params === false) {
|
||
|
|
header('Expires: Tue, 2 Jul 1974 17:41:00 GMT'); // Date in the past
|
||
|
|
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
|
||
|
|
header('Cache-Control: no-cache, must-revalidate'); // HTTP/1.1
|
||
|
|
header('Pragma: no-cache');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Save the result of the canvas to a file
|
||
|
|
*
|
||
|
|
* Parameter array:
|
||
|
|
* 'filename': string The file to output to
|
||
|
|
* @param array $params Parameter array, the contents and meaning depends on the actual Canvas
|
||
|
|
* @abstract
|
||
|
|
*/
|
||
|
|
function save($params = false)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
function toHtml($params)
|
||
|
|
{
|
||
|
|
$this->save(array('filename' => $params['filepath'] . $params['filename']));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Canvas factory method.
|
||
|
|
*
|
||
|
|
* Supported canvass are:
|
||
|
|
*
|
||
|
|
* 'png': output in PNG format (using GD)
|
||
|
|
*
|
||
|
|
* 'jpg': output in JPEG format (using GD)
|
||
|
|
*
|
||
|
|
* 'pdf': output in PDF format (using PDFlib)
|
||
|
|
*
|
||
|
|
* 'svg': output in SVG format
|
||
|
|
*
|
||
|
|
* 'imagemap': output as a html image map
|
||
|
|
*
|
||
|
|
* An example of usage:
|
||
|
|
*
|
||
|
|
* <code>
|
||
|
|
* <?php
|
||
|
|
* $Canvas =& Image_Graph::factory('png',
|
||
|
|
* array('width' => 800, 'height' => 600, 'antialias' => 'native')
|
||
|
|
* );
|
||
|
|
* ?>
|
||
|
|
* </code>
|
||
|
|
*
|
||
|
|
* @param string $canvas The canvas type
|
||
|
|
* @param array $params The parameters for the canvas constructor
|
||
|
|
* @return Image_Canvas The newly created canvas
|
||
|
|
* @static
|
||
|
|
*/
|
||
|
|
function &factory($canvas, $params)
|
||
|
|
{
|
||
|
|
$canvas = strtoupper($canvas);
|
||
|
|
|
||
|
|
if (($canvas == 'PNG') || ($canvas == 'GD')) {
|
||
|
|
$canvas = 'GD_PNG';
|
||
|
|
}
|
||
|
|
if (($canvas == 'JPG') || ($canvas == 'JPEG')) {
|
||
|
|
$canvas = 'GD_JPG';
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($canvas == 'IMAGEMAP') {
|
||
|
|
$canvas = 'ImageMap';
|
||
|
|
}
|
||
|
|
|
||
|
|
$class = 'Image_Canvas_'. $canvas;
|
||
|
|
include_once 'Image/Canvas/'. str_replace('_', '/', $canvas) . '.php';
|
||
|
|
|
||
|
|
$obj =& new $class($params);
|
||
|
|
return $obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|