git.sur5r.net Git - bacula/bacula/blob - gui/bacula-web/includes/graph/bgraph.class.php

   1 <?php
   2 /*
   3 +-------------------------------------------------------------------------+
   4 | Copyright 2010-2011, Davide Franco                                              |
   5 |                                                                         |
   6 | This program is free software; you can redistribute it and/or           |
   7 | modify it under the terms of the GNU General Public License             |
   8 | as published by the Free Software Foundation; either version 2          |
   9 | of the License, or (at your option) any later version.                  |
  10 |                                                                         |
  11 | This program is distributed in the hope that it will be useful,         |
  12 | but WITHOUT ANY WARRANTY; without even the implied warranty of          |
  13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           |
  14 | GNU General Public License for more details.                            |
  15 +-------------------------------------------------------------------------+
  16 */
  17
  18 class BGraph{
  19         private $title;
  20
  21         private $data;
  22         private $data_type;
  23         private $type;
  24
  25         private $colors;
  26         private $shading;
  27
  28         private $width;
  29         private $height;
  30         private $output_file;
  31         private $plot;
  32
  33         function __construct( $filename = "graph.png" )
  34         {
  35                 $this->output_file = 'templates_c/' . $filename;
  36         }
  37
  38         public function SetData( $data_in, $type, $data_type, $shading = 5 )
  39         {
  40                 $this->data             = $data_in;
  41                 $this->type             = $type;
  42                 $this->data_type        = $data_type;
  43                 $this->shadding         = $shading;
  44         }
  45
  46         public function SetGraphSize( $width, $height )
  47         {
  48                 $this->width  = $width;
  49                 $this->height = $height;
  50         }
  51
  52         public function SetTitle( $title )
  53         {
  54                 if( !empty($title) )
  55                         $this->title = $title;
  56                 else
  57                         die( "Please provide a non empty title for the graph" );
  58         }
  59
  60         public function SetColors( $colors )
  61         {
  62                 if( is_array( $colors ) )
  63                         $this->colors = $colors;
  64                 else
  65                         die( "Please provide a array in BGraph->SetColors()" );
  66         }
  67
  68         public function Get_Image_file()
  69         {
  70                 return $this->output_file;
  71         }
  72
  73         public function Render()
  74         {
  75                 // Setting the size
  76                 $this->plot = new PHPlot( $this->width, $this->height );
  77
  78                 // Render to file instead of screen
  79                 $this->plot->SetOutputFile( $this->output_file );
  80                 $this->plot->SetFileFormat("png");
  81                 $this->plot->SetIsInline( true );
  82
  83
  84                 $this->plot->SetImageBorderType('plain');
  85
  86                 // Data, type and data type
  87                 $this->plot->SetPlotType( $this->type );
  88                 $this->plot->SetDataType( $this->data_type );
  89                 $this->plot->SetDataValues( $this->data );
  90
  91                 // Plot colors
  92                 $this->plot->SetDataColors( $this->colors );
  93
  94                 // Plot shading
  95                 $this->plot->SetShading( $this->shading );
  96
  97                 // Image border
  98                 $this->plot->SetImageBorderType( 'none' );
  99
 100                 // Plot area (calculated regarding the width and height of the graph)
 101                 if( $this->type == 'pie' )
 102                         $this->plot->SetPlotAreaPixels( 10, 10, ($this->width / 2), $this->height-10 );
 103
 104                 // Legend position (calculated regarding the width and height of the graph)
 105                 $this->plot->SetLegendPixels( ($this->width / 2) + 10, 25 );
 106
 107                 // Labels scale position
 108                 if( $this->type == 'pie' )
 109                         $this->plot->SetLabelScalePosition( 0.2 );
 110
 111                 // Graph title
 112                 $this->plot->SetTitle( $this->title );
 113
 114                 // Setting up legends
 115                 if( $this->type != 'bars' ) {
 116                         $legends = array();
 117                         foreach( $this->data as $key => $legend ) {
 118                                 $this->plot->SetLegend( implode(': ',$legend) );
 119                         }
 120                 }
 121
 122                 # Turn off X tick labels and ticks because they don't apply here:
 123                 $this->plot->SetXTickLabelPos('none');
 124                 $this->plot->SetXTickPos('none');
 125                 $this->plot->SetPlotAreaWorld(NULL, 0, NULL, NULL);
 126
 127
 128                 $this->plot->DrawGraph();
 129         } // end function Render()
 130 } // end BGraph classe
 131
 132 ?>