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-<?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: $Id$
- * @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']);
- }
- }
-
- /**
- * 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;
- }
-
- /**
- * Reset the canvas.
- *
- * Includes fillstyle, linestyle, thickness and polygon
- */
- function reset()
- {
- $this->_reset();
- }
-
- /**
- * 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)
- {
- }
-
- /**
- * 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)
- {
- }
-
- /**
- * 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;
- }
-
-}
-
-?> \ No newline at end of file
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