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         private $ytitle;
  21
  22         private $data;
  23         private $data_type;
  24         private $type;
  25
  26         private $colors;
  27         private $shading;
  28
  29         private $width;
  30         private $height;
  31         private $output_file;
  32         private $plot;
  33
  34         function __construct( $filename = "graph.png" )
  35         {
  36                 $this->output_file = 'templates_c/' . $filename;
  37         }
  38
  39         public function SetData( $data_in, $type, $data_type, $shading = 5 )
  40         {
  41                 $this->data             = $data_in;
  42                 $this->type             = $type;
  43                 $this->data_type        = $data_type;
  44                 $this->shadding         = $shading;
  45         }
  46
  47         public function SetGraphSize( $width, $height )
  48         {
  49                 $this->width  = $width;
  50                 $this->height = $height;
  51         }
  52
  53         public function SetTitle( $title )
  54         {
  55                 if( !empty($title) )
  56                         $this->title = $title;
  57                 else
  58                         die( "Please provide a non empty title for the graph" );
  59         }
  60
  61         public function SetYTitle( $ytitle )
  62         {
  63                 if( !empty($ytitle) )
  64                         $this->ytitle = $ytitle;
  65                 else
  66                         die( "Please provide a non empty title for the Y axis" );
  67         }
  68
  69         public function SetColors( $colors )
  70         {
  71                 if( is_array( $colors ) )
  72                         $this->colors = $colors;
  73                 else
  74                         die( "Please provide a array in BGraph->SetColors()" );
  75         }
  76
  77         public function Get_Image_file()
  78         {
  79                 return $this->output_file;
  80         }
  81
  82         public function Render()
  83         {
  84                 // Setting the size
  85                 $this->plot = new PHPlot( $this->width, $this->height );
  86
  87                 // Render to file instead of screen
  88                 $this->plot->SetOutputFile( $this->output_file );
  89                 $this->plot->SetFileFormat("png");
  90                 $this->plot->SetIsInline( true );
  91
  92
  93                 $this->plot->SetImageBorderType('plain');
  94
  95                 // Data, type and data type
  96                 $this->plot->SetPlotType( $this->type );
  97                 $this->plot->SetDataType( $this->data_type );
  98                 $this->plot->SetDataValues( $this->data );
  99
 100                 // Plot colors
 101                 $this->plot->SetDataColors( $this->colors );
 102
 103                 // Plot shading
 104                 $this->plot->SetShading( $this->shading );
 105
 106                 // Image border
 107                 $this->plot->SetImageBorderType( 'none' );
 108
 109                 // Plot area (calculated regarding the width and height of the graph)
 110                 if( $this->type == 'pie' )
 111                         $this->plot->SetPlotAreaPixels( 10, 10, ($this->width / 2), $this->height-10 );
 112
 113                 // Legend position (calculated regarding the width and height of the graph)
 114                 $this->plot->SetLegendPixels( ($this->width / 2) + 10, 25 );
 115
 116                 // Labels scale position
 117                 if( $this->type == 'pie' )
 118                         $this->plot->SetLabelScalePosition( 0.2 );
 119
 120                 // Graph title
 121                 $this->plot->SetTitle( $this->title );
 122                 $this->plot->SetYTitle( $this->ytitle );
 123
 124                 // Setting up legends
 125                 if( $this->type != 'bars' ) {
 126                         $legends = array();
 127                         foreach( $this->data as $key => $legend ) {
 128                                 $this->plot->SetLegend( implode(': ',$legend) );
 129                         }
 130                 }
 131
 132                 # Turn off X tick labels and ticks because they don't apply here:
 133                 $this->plot->SetXTickLabelPos('none');
 134                 $this->plot->SetXTickPos('none');
 135                 $this->plot->SetPlotAreaWorld(NULL, 0, NULL, NULL);
 136
 137
 138                 $this->plot->DrawGraph();
 139         } // end function Render()
 140 } // end BGraph classe
 141
 142 ?>