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egroupware/phpgwapi/inc/class.gdgraph.inc.php

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<?php
/*******************************************************************\
* phpGroupWare - GD Graph *
* http://www.phpgroupware.org *
* This program is part of the GNU project, see http://www.gnu.org/ *
* *
* Written by Bettina Gille [ceb@phpgroupware.org] *
* *
* Creates graphical statistics using GD graphics library *
* Copyright (C) 2003 Free Software Foundation, Inc *
* ----------------------------------------------------------------- *
* This class based on boGraph.php3 *
* Double Choco Latte - Source Configuration Management System *
* Copyright (C) 1999 Michael L. Dean & Tim R. Norman *
* ----------------------------------------------------------------- *
* This library is part of the phpGroupWare API *
* ----------------------------------------------------------------- *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License as *
* published by the Free Software Foundation; either version 2 of *
* the License, or (at your option) any later version. *
* *
* This program 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 *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software *
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
\*******************************************************************/
/* $Id$ */
class gdgraph
{
var $debug;
var $title;
var $caption_x;
var $caption_y;
var $lines_x;
var $lines_y;
var $line_captions_x;
var $data;
var $colors;
var $color_legend;
var $graph_width;
var $graph_height;
var $margin_top;
var $margin_left;
var $margin_bottom;
var $margin_right;
var $img;
function gdgraph($debug = False)
{
$this->debug = $debug;
$this->title = 'Gantt Chart';
$this->caption_x = 'x';
$this->caption_y = 'y';
$this->num_lines_x = 30;
$this->num_lines_y = 10;
$this->line_captions_x = array();
$this->line_captions_y = array();
$this->data = array();
$this->colors = array('red','green','blue','bright red','bright green','bright blue','dark red','dark green','dark blue');
$this->color_legend = array();
$this->color_extra = 'yellow';
$this->graph_width = 800;
$this->graph_height = 400;
$this->margin_top = 20;
$this->margin_left = 80;
$this->margin_bottom = 40;
$this->margin_right = 20;
$this->img = CreateObject('phpgwapi.gdimage');
$this->temp_file = $this->img->temp_file;
}
function rRender()
{
// Initialize image - map white since it's our background
$this->img->width = $this->graph_width;
$this->img->height = $this->graph_height;
$this->img->Init();
$this->img->SetColor(255, 255, 0);
$this->img->ToBrowser();
$this->img->Done();
}
function Render()
{
// Initialize image - map white since it's our background
$this->img->width = $this->graph_width;
$this->img->height = $this->graph_height;
$this->img->Init();
$this->img->SetColor(255, 255, 255, True);
// Draw the captions
$this->img->SetFont(3);
$this->img->SetColor(0, 0, 0);
$this->img->MoveTo($this->graph_width / 2, 2);
$this->img->DrawText(array('text' => $this->title));
//$this->img->MoveTo(2, $this->graph_height / 2);
//$this->img->DrawText($this->caption_y, 'up', 'center');
//$this->img->MoveTo($this->graph_width / 2, $this->graph_height - $this->img->GetFontHeight() - 2);
//$this->img->DrawText($this->caption_x, '', 'center');
// Draw the two axis
$this->img->Line($this->margin_left, $this->margin_top, $this->margin_left, $this->graph_height - $this->margin_bottom + 4);
$this->img->Line($this->margin_left - 4, $this->graph_height - $this->margin_bottom, $this->graph_width - $this->margin_right, $this->graph_height - $this->margin_bottom);
// Draw dashed lines for x axis
$linespace = ($this->graph_width - $this->margin_left - $this->margin_right) / ($this->num_lines_x - 1);
for ($i = 1; $i < $this->num_lines_x; $i++)
{
$x = $i * $linespace + $this->margin_left;
$this->img->SetColor(0, 0, 0);
$this->img->Line($x, $this->graph_height - $this->margin_bottom - 4, $x, $this->graph_height - $this->margin_bottom + 4);
$this->img->SetColor(200, 200, 200);
$this->img->Line($x, $this->margin_top, $x, $this->graph_height - $this->margin_bottom - 4, 'dashed');
}
// Draw dashed lines for y axis
$linespace = ($this->graph_height - $this->margin_top - $this->margin_bottom) / ($this->num_lines_y - 1);
for ($i = 1; $i < $this->num_lines_y; $i++)
{
$y = $this->graph_height - $this->margin_bottom - ($i * $linespace);
$this->img->SetColor(0, 0, 0);
$this->img->Line($this->margin_left - 4, $y, $this->margin_left + 4, $y);
$this->img->SetColor(200, 200, 200);
$this->img->Line($this->margin_left + 4, $y, $this->graph_width - $this->margin_right, $y, 'dashed');
}
/* Find the largest numeric value in data (an array of arrays representing data)
$largest = 0;
reset($this->data);
while (list($junk, $line) = each($this->data))
{
reset($line);
while (list($junk2, $value) = each($line))
{
if ($value > $largest)
$largest = $value;
}
}
while ($largest < ($this->num_lines_y - 1))
$largest = ($this->num_lines_y - 1);
$spread = ceil($largest / ($this->num_lines_y - 1));
$largest = $spread * ($this->num_lines_y - 1);*/
$largest = $this->num_lines_x;
// Draw the x axis text
$this->img->SetColor(0, 0, 0);
$this->img->SetFont(2);
$linespace = ($this->graph_width - $this->margin_left - $this->margin_right) / ($this->num_lines_x - 1);
reset($this->line_captions_x);
$i = 0;
while (list(,$text) = each($this->line_captions_x))
{
$this->img->MoveTo($i * $linespace + $this->margin_left, $this->graph_height - $this->margin_bottom + 8);
$this->img->DrawText(array('text' => $text['date_formatted']));
$i++;
}
// Draw the lines for the data
$this->img->SetColor(255, 0, 0);
reset($this->data);
if($this->debug)
{
_debug_array($this->data);
}
$i = 1;
while (is_array($this->data) && list(,$line) = each($this->data))
{
if($line['extracolor'])
{
$this->img->SetColorByName($line['extracolor']);
}
else
{
$this->img->SetColorByName($this->colors[$line['color']]);
}
$x1 = $x2 = $y1 = $y2 = 0;
$linespace = ($this->graph_height - $this->margin_top - $this->margin_bottom) / ($this->num_lines_y - 1);
$y1 = $y2 = $this->graph_height - $this->margin_bottom - ($i * $linespace);
$linespace = ($this->graph_width - $this->margin_left - $this->margin_right) / ($this->num_lines_x - 1);
if ($line['sdate'] <= $this->line_captions_x[0]['date'] && $line['edate'] > $this->line_captions_x[0]['date'])
{
if($this->debug)
{
echo 'PRO sdate <= x sdate | PRO edate > x sdate<br>';
}
$x1 = $this->margin_left;
}
elseif($line['sdate'] >= $this->line_captions_x[0]['date'] && $line['edate'] <= $this->line_captions_x[$largest]['date'])
{
if($this->debug)
{
echo 'PRO sdate >= date! pro_sdate = ' . $line['sdate'] . ', pro_edate = ' . $line['edate'] . '<br>';
echo 'PRO sdate >= date! pro_sdate_formatted = ' . $GLOBALS['phpgw']->common->show_date($line['sdate'],$GLOBALS['phpgw_info']['user']['preferences']['common']['dateformat']) . ', pro_edate_formatted = ' . $GLOBALS['phpgw']->common->show_date($line['edate'],$GLOBALS['phpgw_info']['user']['preferences']['common']['dateformat']) . '<br>';
echo 'x sdate: ' . $this->line_captions_x[0]['date'] . ', x edate: ' . $this->line_captions_x[$largest]['date'] . '<br><br>';
}
for($y=0;$y<$largest;$y++)
{
if($line['sdate'] == $this->line_captions_x[$y]['date'])
{
$x1 = $y * $linespace + $this->margin_left;
}
}
}
else
{
$x1 = $largest * $linespace + $this->margin_left;
}
if ($line['edate'] >= $this->line_captions_x[$largest]['date'])
{
if($this->debug)
{
echo 'PRO edate >= x edate! pro_edate = ' . $line['edate'] . '<br>';
echo 'PRO edate >= x edate! pro_edate_formatted = ' . $GLOBALS['phpgw']->common->show_date($line['edate'],$GLOBALS['phpgw_info']['user']['preferences']['common']['dateformat']) . '<br>';
echo 'x edate: ' . $this->line_captions_x[$largest]['date'] . '<br>';
}
$x2 = $this->graph_width - $this->margin_right;
}
elseif($line['edate'] <= $this->line_captions_x[$largest]['date'] && $line['edate'] >= $this->line_captions_x[0]['date'])
{
for($y=0;$y<$largest;$y++)
{
if($line['edate'] == $this->line_captions_x[$y]['date'])
{
$x2 = $y * $linespace + $this->margin_left;
}
}
}
else
{
$x2 = $largest * $linespace + $this->margin_left;
}
for ($w = -3; $w < 4; $w++)
{
$this->img->Line(1+$x1,$y1+$w,$x2,$y2+$w);
}
$color_index++;
$i++;
}
// Draw the y axis text
$this->img->SetColor(0, 0, 0);
$this->img->SetFont(2);
$linespace = ($this->graph_height - $this->margin_top - $this->margin_bottom) / ($this->num_lines_y - 1);
$space = 1;
for ($i = 0;$i<count($this->data);$i++)
{
$y = $this->graph_height - $this->margin_bottom - ($space * $linespace) - 7;
$this->img->MoveTo($this->margin_left - 6, $y);
$this->img->DrawText(array('text' => $this->data[$i]['title'],'justification' => 'right','margin_left' => $this->margin_left));
$space++;
}
$this->img->ToBrowser();
$this->img->Done();
}
function Open()
{
print('<script language="JavaScript">');
print('window.open(\'main.php3?menuAction=boGraph.Show&');
if (ereg('MSIE', $GLOBALS['HTTP_USER_AGENT']))
print('DCLINFO=' . $GLOBALS['DCLINFO'] . '&');
print($this->ToURL() . '\', \'graph\', \'width=' . ($this->graph_width + 20) . ',height=' . ($this->graph_height + 20) . ',resizable=yes,scrollbars=yes\');');
print('</script>');
}
function Show()
{
$this->FromURL();
$this->Render();
}
function FromURL()
{
$this->title = $GLOBALS['title'];
$this->caption_x = $GLOBALS['caption_x'];
$this->caption_y = $GLOBALS['caption_y'];
$this->num_lines_x = $GLOBALS['num_lines_x'];
$this->num_lines_y = $GLOBALS['num_lines_y'];
$this->line_captions_x = explode(',', $GLOBALS['line_captions_x']);
$dataURL = explode('~', $GLOBALS['data']);
$this->data = array();
while (list($junk, $line) = each($dataURL))
$this->data[] = explode(',', $line);
$this->colors = explode(',', $GLOBALS['colors']);
$this->color_legend = explode(',', $GLOBALS['color_legend']);
$this->graph_width = $GLOBALS['graph_width'];
$this->graph_height = $GLOBALS['graph_height'];
$this->margin_top = $GLOBALS['margin_top'];
$this->margin_left = $GLOBALS['margin_left'];
$this->margin_bottom = $GLOBALS['margin_bottom'];
$this->margin_right = $GLOBALS['margin_right'];
}
function ToURL()
{
$url = 'title=' . rawurlencode($this->title) . '&';
$url .= 'caption_x=' . rawurlencode($this->caption_x) . '&';
$url .= 'caption_y=' . rawurlencode($this->caption_y) . '&';
$url .= 'num_lines_x=' . $this->num_lines_x . '&';
$url .= 'num_lines_y=' . $this->num_lines_y . '&';
$url .= 'line_captions_x=' . rawurlencode(implode(',', $this->line_captions_x)) . '&';
reset($this->data);
$dataURL = '';
while(list($junk, $line) = each($this->data))
{
if ($dataURL != '')
$dataURL .= '~';
$dataURL .= implode(',', $line);
}
$url .= 'data=' . $dataURL . '&';
$url .= 'colors=' . implode(',', $this->colors) . '&';
$url .= 'color_legend=' . rawurlencode(implode(',', $this->color_legend)) . '&';
$url .= 'graph_width=' . $this->graph_width . '&';
$url .= 'graph_height=' . $this->graph_height . '&';
$url .= 'margin_top=' . $this->margin_top . '&';
$url .= 'margin_left=' . $this->margin_left . '&';
$url .= 'margin_bottom=' . $this->margin_bottom . '&';
$url .= 'margin_right=' . $this->margin_right;
return $url;
}
}
?>
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