149 lines
4.3 KiB
PHP
149 lines
4.3 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Image_Graph - PEAR PHP OO Graph Rendering Utility.
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version. This library is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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* General Public License for more details. You should have received a copy of
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* the GNU Lesser General Public License along with this library; if not, write
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* to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Fill
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version CVS: $Id: Gradient.php,v 1.15 2005/08/24 20:36:03 nosey Exp $
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* @link http://pear.php.net/package/Image_Graph
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*/
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/**
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* Include file Image/Graph/Fill/Image.php
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*/
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require_once 'Image/Graph/Fill/Image.php';
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/**
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* Fill using a gradient color.
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* This creates a scaled fillstyle with colors flowing gradiently between 2
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* specified RGB values. Several directions are supported:
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*
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* 1 Vertically (IMAGE_GRAPH_GRAD_VERTICAL)
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*
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* 2 Horizontally (IMAGE_GRAPH_GRAD_HORIZONTAL)
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*
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* 3 Mirrored vertically (the color grades from a- b-a vertically)
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* (IMAGE_GRAPH_GRAD_VERTICAL_MIRRORED)
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*
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* 4 Mirrored horizontally (the color grades from a-b-a horizontally)
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* IMAGE_GRAPH_GRAD_HORIZONTAL_MIRRORED
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*
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* 5 Diagonally from top-left to right-bottom
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* (IMAGE_GRAPH_GRAD_DIAGONALLY_TL_BR)
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*
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* 6 Diagonally from bottom-left to top-right
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* (IMAGE_GRAPH_GRAD_DIAGONALLY_BL_TR)
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*
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* 7 Radially (concentric circles in the center) (IMAGE_GRAPH_GRAD_RADIAL)
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Fill
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version Release: @package_version@
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* @link http://pear.php.net/package/Image_Graph
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*/
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class Image_Graph_Fill_Gradient extends Image_Graph_Fill //Image_Graph_Fill_Image
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{
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/**
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* The direction of the gradient
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* @var int
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* @access private
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*/
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var $_direction;
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/**
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* The first color to gradient
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* @var mixed
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* @access private
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*/
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var $_startColor;
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/**
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* The last color to gradient
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* @var mixed
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* @access private
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*/
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var $_endColor;
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/**
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* Image_Graph_GradientFill [Constructor]
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*
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* @param int $direction The direction of the gradient
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* @param mixed $startColor The value of the starting color
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* @param mixed $endColor The value of the ending color
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*/
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function Image_Graph_Fill_Gradient($direction, $startColor, $endColor)
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{
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parent::Image_Graph_Fill();
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$this->_direction = $direction;
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$this->_startColor = $startColor;
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$this->_endColor = $endColor;
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}
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/**
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* Return the fillstyle
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*
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* @return int A GD fillstyle
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* @access private
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*/
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function _getFillStyle($ID = false)
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{
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switch ($this->_direction) {
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case IMAGE_GRAPH_GRAD_HORIZONTAL:
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$direction = 'horizontal';
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break;
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case IMAGE_GRAPH_GRAD_VERTICAL:
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$direction = 'vertical';
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break;
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case IMAGE_GRAPH_GRAD_HORIZONTAL_MIRRORED:
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$direction = 'horizontal_mirror';
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break;
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case IMAGE_GRAPH_GRAD_VERTICAL_MIRRORED:
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$direction = 'vertical_mirror';
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break;
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case IMAGE_GRAPH_GRAD_DIAGONALLY_TL_BR:
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$direction = 'diagonal_tl_br';
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break;
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case IMAGE_GRAPH_GRAD_DIAGONALLY_BL_TR:
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$direction = 'diagonal_bl_tr';
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break;
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case IMAGE_GRAPH_GRAD_RADIAL:
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$direction = 'radial';
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break;
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}
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return array(
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'type' => 'gradient',
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'start' => $this->_startColor,
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'end' => $this->_endColor,
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'direction' => $direction
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);
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}
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}
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?>
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