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+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Image_Graph - PEAR PHP OO Graph Rendering Utility.
+ *
+ * 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_Graph
+ * @subpackage Fill
+ * @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/package/Image_Graph
+ */
+
+/**
+ * Include file Image/Graph/Fill/Image.php
+ */
+require_once 'Image/Graph/Fill/Image.php';
+
+/**
+ * Fill using a gradient color.
+ * This creates a scaled fillstyle with colors flowing gradiently between 2
+ * specified RGB values. Several directions are supported:
+ *
+ * 1 Vertically (IMAGE_GRAPH_GRAD_VERTICAL)
+ *
+ * 2 Horizontally (IMAGE_GRAPH_GRAD_HORIZONTAL)
+ *
+ * 3 Mirrored vertically (the color grades from a- b-a vertically)
+ * (IMAGE_GRAPH_GRAD_VERTICAL_MIRRORED)
+ *
+ * 4 Mirrored horizontally (the color grades from a-b-a horizontally)
+ * IMAGE_GRAPH_GRAD_HORIZONTAL_MIRRORED
+ *
+ * 5 Diagonally from top-left to right-bottom
+ * (IMAGE_GRAPH_GRAD_DIAGONALLY_TL_BR)
+ *
+ * 6 Diagonally from bottom-left to top-right
+ * (IMAGE_GRAPH_GRAD_DIAGONALLY_BL_TR)
+ *
+ * 7 Radially (concentric circles in the center) (IMAGE_GRAPH_GRAD_RADIAL)
+ *
+ * @category Images
+ * @package Image_Graph
+ * @subpackage Fill
+ * @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/package/Image_Graph
+ */
+class Image_Graph_Fill_Gradient extends Image_Graph_Fill //Image_Graph_Fill_Image
+{
+
+ /**
+ * The direction of the gradient
+ * @var int
+ * @access private
+ */
+ var $_direction;
+
+ /**
+ * The first color to gradient
+ * @var mixed
+ * @access private
+ */
+ var $_startColor;
+
+ /**
+ * The last color to gradient
+ * @var mixed
+ * @access private
+ */
+ var $_endColor;
+
+ /**
+ * Image_Graph_GradientFill [Constructor]
+ *
+ * @param int $direction The direction of the gradient
+ * @param mixed $startColor The value of the starting color
+ * @param mixed $endColor The value of the ending color
+ */
+ function Image_Graph_Fill_Gradient($direction, $startColor, $endColor)
+ {
+ parent::Image_Graph_Fill();
+ $this->_direction = $direction;
+ $this->_startColor = $startColor;
+ $this->_endColor = $endColor;
+ }
+
+ /**
+ * Return the fillstyle
+ *
+ * @return int A GD fillstyle
+ * @access private
+ */
+ function _getFillStyle($ID = false)
+ {
+ switch ($this->_direction) {
+ case IMAGE_GRAPH_GRAD_HORIZONTAL:
+ $direction = 'horizontal';
+ break;
+ case IMAGE_GRAPH_GRAD_VERTICAL:
+ $direction = 'vertical';
+ break;
+ case IMAGE_GRAPH_GRAD_HORIZONTAL_MIRRORED:
+ $direction = 'horizontal_mirror';
+ break;
+ case IMAGE_GRAPH_GRAD_VERTICAL_MIRRORED:
+ $direction = 'vertical_mirror';
+ break;
+ case IMAGE_GRAPH_GRAD_DIAGONALLY_TL_BR:
+ $direction = 'diagonal_tl_br';
+ break;
+ case IMAGE_GRAPH_GRAD_DIAGONALLY_BL_TR:
+ $direction = 'diagonal_bl_tr';
+ break;
+ case IMAGE_GRAPH_GRAD_RADIAL:
+ $direction = 'radial';
+ break;
+ }
+
+ return array(
+ 'type' => 'gradient',
+ 'start' => $this->_startColor,
+ 'end' => $this->_endColor,
+ 'direction' => $direction
+ );
+ }
+
+}
+
+?> \ No newline at end of file