<?php
/** \file include\db_icon.php
 *  \brief DI webinterface icon functions
 *  \author Rob Schalken, Core|Vision
 *  \version $Revision: 26247 $
 *  \date $Date: 2016-02-29 10:40:22 +0100 (Mon, 29 Feb 2016) $
 *
 * This file return the requested data
 */

require_once("utilities.php");
require_once("db.php");
require_once("document.php");

define("ICON_HEIGHT"              ,15);
define("ICON_WIDTH"               ,15);
define("ICON_OFFSET"              , 2);
define("ICON_IDCODE_WIDTH"        ,(3 * ICON_WIDTH) + (4 * ICON_OFFSET) + (2 * ICON_OFFSET));
define("ICON_IDCODE_HEIGHT"       ,12);

// Retrieve icon info
$icon = strtolower($_GET['icon']);
$output = (isset($_GET['output'])) ? $_GET['output'] : "png";

// Split-up warnings
$warnings = array();
if (isset($_GET['warning'])) {
  $warnings = split(",", $_GET['warning']);
}

// Idcode/Realtime remark set?
$idcode = "";
$rtremark = "";
if (isset($_GET['idcode'])) {
  // Idcode
  if (strlen($_GET['idcode']) > 10) {
    $idcode = substr($_GET['idcode'], 0, 10);
  }
  else {
    $idcode = $_GET['idcode'];
  }
  
  if (isset($_GET['rtremark'])) {
    // Realtime remark
    if (strlen($_GET['rtremark']) > 10) {
      $rtremark = substr($_GET['rtremark'], 0, 10);
    }
    else {
      $rtremark = $_GET['rtremark'];
    }
  }  
}

// Define total width image (1 warning => fixed width)
$n_warnings = count($warnings);
// only 1 icon for both (ext1/ext2) temperature warnings
if( in_array("temp_ext1", $warnings) && in_array("temp_ext2", $warnings) ) $n_warnings--;
$icon_width_alert       = ($n_warnings > 0) ? (($n_warnings * ICON_WIDTH) + (($n_warnings + 1) * ICON_OFFSET)) : 0;
$icon_width_total       = (strlen($idcode)) ? ((ICON_IDCODE_WIDTH > $icon_width_alert) ? ICON_IDCODE_WIDTH : $icon_width_alert) : $icon_width_alert;

if ((!isset($_GET['action'])) || (strtolower($_GET['action']) == "data")) {
  // Retrieve icon data
  $file = db_fetch_data("SELECT icon_" . $icon . ",icon_" . $icon . "_mimetype FROM device WHERE id='" . $_GET['device'] ."'");

  // Create image from string
  $src = imagecreatefromstring($file[0]["icon_" . $icon]);

  // Check offsets src
  $src_offsetx = (imagesx($src) < $icon_width_total) ? round(($icon_width_total - imagesx($src))/2) : 0;
  $src_offsety = (!empty($warnings)) ? ICON_HEIGHT : 0;

  // Create new image (including icons)
  $height  = imagesy($src);
  $height += (!empty($warnings)) ? ICON_HEIGHT : 0;
  $height += (strlen($idcode)) ? ICON_IDCODE_HEIGHT : 0;
  $height += ((strlen($idcode)) && (strlen($rtremark))) ? ICON_IDCODE_HEIGHT : 0;  
  $width   = (imagesx($src) < $icon_width_total) ? $icon_width_total : imagesx($src);

  $dest    = imagecreatetruecolor($width, $height);

  // Define "white" as transparent color
  $transparent = imagecolorallocate($dest, 255, 255, 254);
  imagecolortransparent($dest, $transparent);

  // Fill complete background
  imagefilledrectangle($dest, 0, 0, imagesx($dest), imagesy($dest), $transparent);

  // Copy and resample image
  imagecopyresampled($dest, $src, $src_offsetx, $src_offsety, 0, 0, imagesx($src), imagesy($src), imagesx($src), imagesy($src));

  if (!empty($warnings)) {
    // Check icon offset
    $icon_offsetx = round((imagesx($dest) - $icon_width_alert)/2) + ICON_OFFSET;
    if(
      in_array(($img = "gsm_none"),    $warnings) ||
      in_array(($img = "gsm_unknown"), $warnings) ||
      in_array(($img = "gsm0"),        $warnings) ||
      in_array(($img = "gsm10"),       $warnings) ||
      in_array(($img = "gsm25"),       $warnings) ||
      in_array(($img = "gsm50"),       $warnings) ||
      in_array(($img = "gsm75"),       $warnings) ||
      in_array(($img = "gsm100"),      $warnings)
    ) {
      // gsm icons are 1 pixel wider than the other icons to accomodate the five bars
      $img = imagecreatefrompng("../" . IMAGE_DIR . "icon_" . $img . ".png");
      imagecopyresampled($dest, $img, $icon_offsetx, 0, 0, 0, ICON_WIDTH + 1, ICON_HEIGHT, imagesx($img), imagesy($img));
      imagedestroy($img);
      $icon_offsetx += ICON_WIDTH + 1 + ICON_OFFSET;
    }    

    // Display warnings
    if (in_array("batt", $warnings)) {
      // Create battery warning icon
      $batt = imagecreatefrompng("../" . IMAGE_DIR . "icon_batt.png");
      imagecopyresampled($dest, $batt, $icon_offsetx, 0, 0, 0, ICON_WIDTH, ICON_HEIGHT, imagesx($batt), imagesy($batt));
      imagedestroy($batt);
      $icon_offsetx += ICON_WIDTH + ICON_OFFSET;
    }

    if (in_array("temp", $warnings) || in_array("temp_ext1", $warnings) || in_array("temp_ext2", $warnings)) {
      // Create temperature warning icon
      $temp = imagecreatefrompng("../" . IMAGE_DIR . "icon_temp.png");
      imagecopyresampled($dest, $temp, $icon_offsetx, 0, 0, 0, ICON_WIDTH, ICON_HEIGHT, imagesx($temp), imagesy($temp));
      imagedestroy($temp);
      $icon_offsetx += ICON_WIDTH + ICON_OFFSET;
    }
 
    if (in_array("gps", $warnings)) {
      // Create GPS warning icon
      $gps = imagecreatefrompng("../" . IMAGE_DIR . "icon_gps.png");
      imagecopyresampled($dest, $gps, $icon_offsetx, 0, 0, 0, ICON_WIDTH, ICON_HEIGHT, imagesx($gps), imagesy($gps));
      imagedestroy($gps);
      $icon_offsetx += ICON_WIDTH + ICON_OFFSET;
    }

    if (in_array("switch", $warnings)) {
      // Create SWITCH warning icon
      $switch = imagecreatefrompng("../" . IMAGE_DIR . "icon_switch.png");
      imagecopyresampled($dest, $switch, $icon_offsetx, 0, 0, 0, ICON_WIDTH, ICON_HEIGHT, imagesx($switch), imagesy($switch));
      imagedestroy($switch);
      $icon_offsetx += ICON_WIDTH + ICON_OFFSET;
    }
    
    if (in_array("sleepmode", $warnings)) {
      // Create sleepmode warning icon
      $sleep = imagecreatefrompng("../" . IMAGE_DIR . "icon_sleepmode.png");
      imagecopyresampled($dest, $sleep, $icon_offsetx, 0, 0, 0, ICON_WIDTH, ICON_HEIGHT, imagesx($sleep), imagesy($sleep));
      imagedestroy($sleep);
      $icon_offsetx += ICON_WIDTH + ICON_OFFSET;
    }    
  }

  if (strlen($idcode)) {
    // Define colors
    $white = imagecolorallocate($dest, 255, 255, 255);
    $black = imagecolorallocate($dest, 0, 0, 0);

    $icon_offsetx = ((imagesx($dest) - ICON_IDCODE_WIDTH) > 0) ? round((imagesx($dest) - ICON_IDCODE_WIDTH)/2) : 0;

    // Define height
    $height  = ICON_IDCODE_HEIGHT;
    $height += (strlen($rtremark)) ? ICON_IDCODE_HEIGHT : 0;

    // Fill complete background (black) => Border    
    imagefilledrectangle($dest, $icon_offsetx, imagesy($dest) - $height - 1, $icon_offsetx + ICON_IDCODE_WIDTH - 1, imagesy($dest) - 1, $black);

    // Fill complete background (white)
    imagefilledrectangle($dest, $icon_offsetx + 1, imagesy($dest) - $height, $icon_offsetx + ICON_IDCODE_WIDTH - 2, imagesy($dest) - 2, $white);

    // Draw idcode & Realtime remark
    for($i=0; $i<2; $i++) {          
      $found     = FALSE;
      $font_size = $_RT_FONTSIZE;
      $font      = FONT_DIR . "verdana.ttf";
      $text      = (!$i) ? $idcode : $rtremark;
      
      if (strlen($text)) {
        while(!$found) {
          // Define text width
          $info = imagettfbbox($font_size, 0, $font, $text);       
         
          if (($info[2] - $info[0]) <= (ICON_IDCODE_WIDTH - 4)) {
            // Calculate width
            $width = ($info[2] - $info[0]);        
            
            // set flag
            $found = TRUE;
          }
          else {
            $text = substr($text, 0, (strlen($text) - 1));  
          }
        }
        
        // Define offsets
        $icon_offsetx_box = $icon_offsetx + ((ICON_IDCODE_WIDTH - $width)/2);
        $icon_offsety_box = imagesy($dest) - 3;
        $icon_offsety_box -= ((!$i) && (strlen($rtremark))) ? ICON_IDCODE_HEIGHT : 0;
        
        // Draw the text
        imagettftext($dest, $font_size, 0, $icon_offsetx_box, $icon_offsety_box, $black, $font, $text);
      }
    }
  }

  // Destory image
  imagedestroy($src);
  
  // Turn on output buffering 
  ob_start();

  // Get output
  switch($output)
  {
    case "gif":
      $mimetype = "image/gif";
      imagegif($dest);
      break;
    case "jpg":
      $mimetype = "image/jpg";
      imagejpeg($dest);
      break;
    default:
      $mimetype = "image/png";
      imagepng($dest);
      break;
  }
  
  // Adjust extension
  $icon = RemoveExtension($icon) . "." . $output; 
  
  // Copy current image to document
  $catched_image = ob_get_clean();

  // Download icon
  download_document(array(document => $catched_image, mimetype => $mimetype, filename => "icon_" . $icon));

  // Destroy image
  imagedestroy($dest);
}
else if (strtolower($_GET['action']) == "jssize") {
  // Retrieve icon width
  $file = db_fetch_data("SELECT icon_" . $icon . "_width,icon_" . $icon . "_height  FROM device WHERE id='" . $_GET['device'] ."'");

  // Define height/width
  $height  = $file[0]["icon_" . $icon . "_height"];
  $height += (!empty($warnings)) ? ICON_HEIGHT : 0;
  $height += (strlen($idcode)) ? ICON_IDCODE_HEIGHT : 0;
  $height += ((strlen($idcode)) && (strlen($rtremark))) ? ICON_IDCODE_HEIGHT : 0;
  $width   = ($file[0]["icon_" . $icon . "_width"] < $icon_width_total) ? $icon_width_total : $file[0]["icon_" . $icon . "_width"];

  echo "//iconsize_v1.0\niconsize=new Array(" . $width . "," . $height . ");";
}
else if (strtolower($_GET['action']) == "session") {
  require_once("session.php");

  if (isset($_GET['output'])) {
    $src  = imagecreatefromstring($_SESSION[$_PAGE_INFO['id']][$_GET['session']]["icon_" . $icon]);
    $dest = imagecreatetruecolor(imagesx($src), imagesy($src));
    
    // Define "white" as transparent color
    $transparent = imagecolorallocate($dest, 255, 255, 254);
    imagecolortransparent($dest, $transparent);
  
    // Fill complete background
    imagefilledrectangle($dest, 0, 0, imagesx($src), imagesy($src), $transparent);

    // Copy and resample image
    imagecopyresampled($dest, $src, $src_offsetx, $src_offsety, 0, 0, imagesx($src), imagesy($src), imagesx($src), imagesy($src));    
    
    // Destory image
    imagedestroy($src);
    
    // Turn on output buffering 
    ob_start();
    
    // Get output
    switch($output)
    {
      case "gif":
        $mimetype = $_SESSION[$_PAGE_INFO['id']][$_GET['session']]["icon_" . $icon . "_mimetype"];      
        imagegif($dest);
        break;
      case "jpg":
        $mimetype = $_SESSION[$_PAGE_INFO['id']][$_GET['session']]["icon_" . $icon . "_mimetype"];
        imagejpeg($dest);
        break;
      default:
        $mimetype = $_SESSION[$_PAGE_INFO['id']][$_GET['session']]["icon_" . $icon . "_mimetype"];
        imagepng($dest);
        break;
    }
  
    // Adjust extension
    $icon = RemoveExtension($icon) . "." . $output; 
  
    // Copy current image to document
    $catched_image = ob_get_clean();
    
    imagedestroy($dest);
      
    // Upload session icon
    download_document(array(document => $catched_image,
                            mimetype => $mimetype,
                            filename => $icon));
  }
  else {
    // Upload session icon
    download_document(array(document => $_SESSION[$_PAGE_INFO['id']][$_GET['session']]["icon_" . $icon],
                            mimetype => $_SESSION[$_PAGE_INFO['id']][$_GET['session']]["icon_" . $icon . "_mimetype"],
                            filename => $icon));
  }
}
?>