<?php

use codeagent\treemap\Treemap;
use codeagent\treemap\presenter\ImagePresenter;
use codeagent\treemap\presenter\NodeInfo;
use codeagent\treemap\Gradient;

// ---
// --- Local fonctions
// ---
function rgb2hex($rgb) {
   $hex = "#";
   $hex .= str_pad(dechex($rgb[0]), 2, "0", STR_PAD_LEFT);
   $hex .= str_pad(dechex($rgb[1]), 2, "0", STR_PAD_LEFT);
   $hex .= str_pad(dechex($rgb[2]), 2, "0", STR_PAD_LEFT);

   return $hex; // returns the hex value including the number sign (#)
}

function hex2rgb($color){
    $color = str_replace('#', '', $color);
    if (strlen($color) != 6){ return array(0,0,0); }
    $rgb = array();
    for ($x=0;$x<3;$x++){
        $rgb[$x] = hexdec(substr($color,(2*$x),2));
    }
    return $rgb;
}

class topisto_treemap
{
  private static function getRGB($methode, $gradient, $factor)
  {
    switch($methode)
    {
      case 0:
        $rgb = [rand(0,255),rand(0,255),rand(0,255)];
        break;

      case 1:
        $rgb = [80,80,80];
        break;

      case 2:
        $factor=rand(0,100);
        $rgb = [255,255,255];
        if ($factor < 50 ) $rgb = [255,0,0];
        if ($factor < 25 ) $rgb = [0,0,255];
        if ($factor < 10 ) $rgb = [255,255,0];
        break;

      case 3:
        $rgb  = hex2rgb($gradient[1]->color($factor));
        break;

      case 4:
        $rgb  = hex2rgb($gradient[2]->color($factor));
        break;

      case 999:
        $rgb  = hex2rgb($gradient[3]->color($factor));
        break;

      default:  
        $rgb  = hex2rgb($gradient[0]->color($factor));
    }

    return $rgb;
  }

  public static function DrawBlock($the_block, $vImage, $parametres)
  {
    $type    = 1;

    if (isset($parametres['x']))                $x       = $parametres['x'];
    if (isset($parametres['y']))                $y       = $parametres['y'];
    if (isset($parametres['width']))            $width   = $parametres['width'];
    if (isset($parametres['height']))           $height  = $parametres['height'];
    if (isset($parametres['methode']))          $mode    = $parametres['methode'];
    if (isset($parametres['type']))             $type    = $parametres['type'];
    if (isset($parametres['font_color']))       $vBgColor   = $parametres['font_color'];
    if (isset($parametres['background_color'])) $vFgColor   = $parametres['background_color'];

    imagefilledrectangle($vImage, $x, $y, $x+$width, $y+$height, $vFgColor);

    $full_area = $width * $height;
    if ($full_area == 0) $full_area = 1;

    $data = blockchain::getTransactionData($the_block, $type);

    $treemap = new Treemap($data, $width, $height);
    $map = $treemap->getMap();
    $m = count($map);
    $flag_contour = true;
    for($mm = 0; $mm < $m; $mm++)
    {
      $tx     = $map[$mm];
      $factor = (($tx['_rectangle']->width * $tx['_rectangle']->height) / $full_area)*100.0;

      $x1 = $x + $tx['_rectangle']->left;
      $y1 = $y + $tx['_rectangle']->top;

      $x2 = $x1 + $tx['_rectangle']->width;
      $y2 = $y1 + $tx['_rectangle']->height;

      if ($x1 > ($x+$width))  $x1 = ($x+$width);
      if ($y1 > ($y+$height)) $y1 = ($y+$height);
      if ($x2 > ($x+$width))  $x2 = ($x+$width);
      if ($y2 > ($y+$height)) $y2 = ($y+$height);

      imagerectangle($vImage, $x1, $y1, $x2, $y2, $vBgColor);
    }
    
    imagerectangle($vImage, $x, $y, $x+$width-1, $y+$height, $vBgColor);
  }
}

?>