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khosb/includes/pear/Image/Graph/Legend.php
anubis fae6352bf2 Update to PEAR 1.7.2, Image_Canvas 0.3.1, Image_Color 1.0.3, Image_Graph 0.7.2, XML_Parser 1.3.1.
Removed PHP_Compat, and references to it.
Removed ionCube/Zend/mmCache compatibility checks in test.php script.
Changed minimum PHP requirement to 5.0 in test.php script.
2009-01-04 19:22:54 -05:00

385 lines
12 KiB
PHP

<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Image_Graph - Main class for the graph creation.
*
* 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 Legend
* @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: Legend.php,v 1.16 2006/02/28 22:48:07 nosey Exp $
* @link http://pear.php.net/package/Image_Graph
*/
/**
* Include file Image/Graph/Layout.php
*/
require_once 'Image/Graph/Layout.php';
/**
* Displays a legend for a plotarea.
*
* A legend can be displayed in two ways:
*
* 1 As an overlayed box within the plotarea
*
* 2 Layout'ed on the canvas smewhere next to the plotarea.
*
* @category Images
* @package Image_Graph
* @subpackage Legend
* @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_Legend extends Image_Graph_Layout
{
/**
* Alignment of the text
* @var int
* @access private
*/
var $_alignment = false;
/**
* The plotarea(s) to show the legend for
* @var array
* @access private
*/
var $_plotareas = array();
/**
* Should markers be shown or not on this legend
* @var bool
* @access private
*/
var $_showMarker = false;
/**
* Image_Graph_Legend [Constructor]
*/
function Image_Graph_Legend()
{
parent::Image_Graph_Layout();
$this->_padding = array('left' => 5, 'top' => 5, 'right' => 5, 'bottom' => 5);
}
/**
* The number of actual plots in the plot area
*
* @return int The number of plotes
* @access private
*/
function _plotCount()
{
$count = 0;
$keys = array_keys($this->_plotareas);
foreach($keys as $key) {
$plotarea =& $this->_plotareas[$key];
if (is_a($plotarea, 'Image_Graph_Plotarea')) {
$keys2 = array_keys($plotarea->_elements);
foreach ($keys2 as $key) {
$element =& $plotarea->_elements[$key];
if (is_a($element, 'Image_Graph_Plot')) {
$count ++;
}
}
unset($keys2);
}
}
unset($keys);
return $count;
}
/**
* Get a default parameter array for legendSamples
* @param bool $simulate Whether the array should be used for simulation or
* not
* @return array Default parameter array
* @access private
*/
function _parameterArray($simulate = false)
{
$param['left'] = $this->_left + $this->_padding['left'];
$param['top'] = $this->_top + $this->_padding['top'];
$param['right'] = $this->_right - $this->_padding['right'];
$param['bottom'] = $this->_bottom - $this->_padding['bottom'];
$param['align'] = $this->_alignment;
$param['x'] = $this->_left + $this->_padding['left'];
$param['y'] = $this->_top + $this->_padding['top'];
$param['width'] = 16;
$param['height'] = 16;
$param['show_marker'] = $this->_showMarker;
$param['maxwidth'] = 0;
$param['font'] = $this->_getFont();
if ($simulate) {
$param['simulate'] = true;
}
return $param;
}
/**
* The height of the element on the canvas
*
* @return int Number of pixels representing the height of the element
* @access private
*/
function _height()
{
$parent = (is_object($this->_parent) ? get_class($this->_parent) : $this->_parent);
if (strtolower($parent) == 'image_graph_plotarea') {
$param = $this->_parameterArray(true);
$param['align'] = IMAGE_GRAPH_ALIGN_VERTICAL;
$param0 = $param;
$keys = array_keys($this->_plotareas);
foreach($keys as $key) {
$plotarea =& $this->_plotareas[$key];
$keys2 = array_keys($plotarea->_elements);
foreach($keys2 as $key) {
$element =& $plotarea->_elements[$key];
if (is_a($element, 'Image_Graph_Plot')) {
$element->_legendSample($param);
}
}
unset($keys2);
}
unset($keys);
return abs($param['y'] - $param0['y']) + $this->_padding['top'] + $this->_padding['bottom'];
} else {
return parent::height();
}
}
/**
* The width of the element on the canvas
*
* @return int Number of pixels representing the width of the element
* @access private
*/
function _width()
{
$parent = (is_object($this->_parent) ? get_class($this->_parent) : $this->_parent);
if (strtolower($parent) == 'image_graph_plotarea') {
$param = $this->_parameterArray(true);
$param['align'] = IMAGE_GRAPH_ALIGN_VERTICAL;
$keys = array_keys($this->_plotareas);
foreach($keys as $key) {
$plotarea =& $this->_plotareas[$key];
$keys2 = array_keys($plotarea->_elements);
foreach($keys2 as $key) {
$element =& $plotarea->_elements[$key];
if (is_a($element, 'Image_Graph_Plot')) {
$element->_legendSample($param);
}
}
unset($keys2);
}
unset($keys);
return $param['maxwidth'];
} else {
return parent::width();
}
}
/**
* Set the alignment of the legend
*
* @param int $alignment The alignment
*/
function setAlignment($alignment)
{
$this->_alignment = $alignment;
}
/**
* Update coordinates
*
* @access private
*/
function _updateCoords()
{
parent::_updateCoords();
$parent = (is_object($this->_parent) ? get_class($this->_parent) : $this->_parent);
if (strtolower($parent) == 'image_graph_plotarea') {
$w = $this->_width();
$h = $this->_height();
if ($this->_alignment === false) {
$this->_alignment = IMAGE_GRAPH_ALIGN_TOP + IMAGE_GRAPH_ALIGN_RIGHT;
}
if (($this->_alignment & IMAGE_GRAPH_ALIGN_BOTTOM) != 0) {
$y = $this->_parent->_fillBottom() - $h - $this->_padding['bottom'];
} else {
$y = $this->_parent->_fillTop() + $this->_padding['top'];
}
if (($this->_alignment & IMAGE_GRAPH_ALIGN_LEFT) != 0) {
$x = $this->_parent->_fillLeft() + $this->_padding['left'];
} else {
$x = $this->_parent->_fillRight() - $w - $this->_padding['right'];
}
$this->_setCoords($x, $y, $x + $w, $y + $h);
}
}
/**
* Sets Plotarea
*
* @param Image_Graph_Plotarea $plotarea The plotarea
*/
function setPlotarea(& $plotarea)
{
if (is_a($plotarea, 'Image_Graph_Plotarea')) {
$this->_plotareas[] =& $plotarea;
}
}
/**
* Sets the parent. The parent chain should ultimately be a GraPHP object
*
* @see Image_Graph
* @param Image_Graph_Common $parent The parent
* @access private
*/
function _setParent(& $parent)
{
parent::_setParent($parent);
if (count($this->_plotareas) == 0) {
$this->setPlotarea($parent);
}
}
/**
* Set if this legends should show markers
*
* @param bool $showMarker True if markers are to be shown, false is not
*/
function setShowMarker($showMarker)
{
$this->_showMarker = $showMarker;
}
/**
* Output the plot
*
* @return bool Was the output 'good' (true) or 'bad' (false).
* @access private
*/
function _done()
{
if (Image_Graph_Element::_done() === false) {
return false;
}
$this->_canvas->startGroup(get_class($this));
$param = $this->_parameterArray();
$parent = (is_object($this->_parent) ?
get_class($this->_parent) :
$this->_parent
);
if (strtolower($parent) == 'image_graph_plotarea') {
$this->_getFillStyle();
$this->_getLineStyle();
$this->_canvas->rectangle(
array(
'x0' => $this->_left,
'y0' => $this->_top,
'x1' => $this->_right,
'y1' => $this->_bottom
)
);
$param = $this->_parameterArray();
$keys = array_keys($this->_plotareas);
foreach($keys as $key) {
$plotarea =& $this->_plotareas[$key];
$keys2 = array_keys($plotarea->_elements);
foreach($keys2 as $key) {
$element =& $plotarea->_elements[$key];
if (is_a($element, 'Image_Graph_Plot')) {
$element->_legendSample($param);
}
}
unset($keys2);
}
unset($keys);
} else {
$param0 = $param;
$param0['simulate'] = true;
$keys = array_keys($this->_plotareas);
foreach($keys as $key) {
$plotarea =& $this->_plotareas[$key];
$keys2 = array_keys($plotarea->_elements);
foreach($keys2 as $key) {
$element =& $plotarea->_elements[$key];
if (is_a($element, 'Image_Graph_Plot')) {
$element->_legendSample($param0);
}
}
unset($keys2);
}
unset($keys);
if (($this->_alignment & IMAGE_GRAPH_ALIGN_VERTICAL) != 0) {
if ($param0['x'] == $param['x']) {
$param['y'] = $param['y'] + ($this->_height() - ($param0['y'] - $param['y']))/2;
}
} else {
if ($param0['y'] == $param['y']) {
$param['x'] = $param['x'] + ($this->_width() - ($param0['x'] - $param['x']))/2;
}
}
$keys = array_keys($this->_plotareas);
foreach($keys as $key) {
$plotarea =& $this->_plotareas[$key];
$keys2 = array_keys($plotarea->_elements);
foreach($keys2 as $key) {
$element =& $plotarea->_elements[$key];
if (is_a($element, 'Image_Graph_Plot')) {
$element->_legendSample($param);
}
}
unset($keys2);
}
unset($keys);
}
$this->_canvas->endGroup();
return true;
}
}
?>