/inc/classes/class_gd.php

<?php
class gd {
	var $img;
	var $height;
	var $width;
	var $font;
	var $font_size;
	var $free_type = 0;
	var $available = 0;


	// Constructor
	function gd () {
		if (function_exists("gd_info")) {
			$GD = gd_info();
			$this->available = 1;
			if ($GD["Freetype Support"]) $this->free_type = 1;
			if ($GD["FreeType Support"]) $this->free_type = 1;
		}
	}


	function NewImage($width, $height, $interlace = NULL) {
		$this->width = $width;
		$this->height = $height;

		$this->SetFont();

		if (function_exists("imagecreatetruecolor")) $this->img = imagecreatetruecolor($this->width, $this->height);
		else $this->img = imagecreate($this->width, $this->height);
		if (!$this->img) $this->img = imagecreate($this->width, $this->height);
		if (!$this->img) return t('Unable to Initialize new GD image stream');

		ImageInterlace($this->img, $interlace);
	}


  // Output image (as file if $file is specified, or as direct output if not)
	function PutImage($file = NULL, $type = NULL, $destroy = TRUE) {
		global $config;

		if ($file) {
			$path = substr($file, 0, strrpos($file, "/"));
			$filename = substr($file, strrpos($file, "/") + 1, strlen($file));
			$type = substr($filename, strrpos($filename, ".") + 1, 4);
		}
		if ($type == "") $type = "png";

		if ($file) {
			if (!is_writable($path)) return t('Unable to write in directory /\'/%1/\'/', $path);
		} else Header("Content-type: image/$type");

		if ($file) {
			switch(strtolower($type)) {
				case "jpeg":
				case "jpg": if (ImageTypes() & IMG_JPG) ImageJPEG($this->img, $file); break;
				case "gif": if (ImageTypes() & IMG_GIF) ImageGIF($this->img, $file); break;
				case "wbmp": if (ImageTypes() & IMG_WBMP) ImageWBMP($this->img, $file); break;
				case "bmp":
					include_once("ext_scripts/gd/bmp.php");
					ImageBMP($this->img, $file);
				break;
				case "ico":
					include_once("ext_scripts/gd/ico.php");
					ImageICO($this->img, $file);
				break;
				case "cur":
					include_once("ext_scripts/gd/cur.php");
					ImageCUR($this->img, $file);
				break;
/*				case "ani":
					include_once("ext_scripts/gd/ani.php");
					ImageANI($this->img, $file);
				break;*/
				default: if (ImageTypes() & IMG_PNG) ImagePNG($this->img, $file); break;
			}
			chmod ($file, octdec($config["lansuite"]["chmod_file"]));

			// Check filesize. Delete if filesize = 0 (i.e. becaus of exceeded disk quota), so it is tried to be generated on next load
      if (filesize($file) == 0) unlink($file);

		} else {
			switch(strtolower($type)) {
				case "jpeg":
				case "jpg": if (ImageTypes() & IMG_JPG) ImageJPEG($this->img); break;
				case "gif": if (ImageTypes() & IMG_GIF) ImageGIF($this->img); break;
				case "wbmp": if (ImageTypes() & IMG_WBMP) ImageWBMP($this->img); break;
				case "bmp":
					include_once("ext_scripts/gd/bmp.php");
					ImageBMP($this->img);
				break;
				case "ico":
					include_once("ext_scripts/gd/ico.php");
					ImageICO($this->img);
				break;
				case "cur":
					include_once("ext_scripts/gd/cur.php");
					ImageCUR($this->img);
				break;
/*				case "ani":
					include_once("ext_scripts/gd/ani.php");
					ImageANI($this->img);
				break;*/
				default: if (ImageTypes() & IMG_PNG) ImagePNG($this->img); break;
			}
		}

		if ($destroy) ImageDestroy($this->img);
	}


	function SetFont($font = NULL, $font_size = NULL) {
		if ($font) $this->font = $font;
		else $this->font = $cfg["t_font_path"];
		if (!$this->font) $this->font = "ext_inc/fonts/verdana.ttf";

		if ($font_size) $this->font_size = $font_size;
		else $this->font_size = $cfg["t_font_size"];
		if (!$this->font_size) $this->font_size = 8;
	}


	#### Draws the text $text @ $xpos, $ypos, with color $color.
	## The text will be cut to a maximum of $max_length chars.
	function Text($xpos, $ypos, $color, $text, $max_length = NULL, $angle = NULL){
		global $cfg;

		if ($max_length > 4) if (strlen($text) > $max_length) $text = substr($text, 0, $max_length-3) . "...";
		if ($angle == "") $angle = 0;

		if ($this->free_type) ImageTtfText($this->img, $this->font_size, $angle, $xpos, $ypos + $this->font_size, $color, $this->font, $text);
		else {
			$ypos = $ypos - 3;
			$text_parts = split ("\r\n", $text);
			$i = 0;
			while (list ($key, $val) = each ($text_parts)) {
				ImageString($this->img, 2, $xpos, $ypos + $i, $val, $color);
				$i += ($this->font_size + 2);
			}
		}
	}

/*
	function CreateButton($name) {
		global $auth, $language, $func;

		if (!file_exists("ext_inc/auto_images/{$auth["design"]}/$language/button_$name.png")) {
			$func->CreateDir("ext_inc/auto_images/{$auth["design"]}");
			$func->CreateDir("ext_inc/auto_images/{$auth["design"]}/$language");

      $text = t($name);
			if (strlen($text) <= 10) {
				$start_x = 34 - (strlen($text) * 6) / 2;
				$this->img = ImageCreateFromPNG("design/{$auth["design"]}/images/button.png");
			} elseif (strlen($text) <= 15) {
				$start_x = 49 - (strlen($text) * 6) / 2;
				$this->img = ImageCreateFromPNG("design/{$auth["design"]}/images/button_b.png");
			} else {
				$start_x = 64 - (strlen($text) * 6) / 2;
				if (strlen($text) > 20) $text = substr($text, 0, 20);
				$this->img = ImageCreateFromPNG("design/{$auth["design"]}/images/button_c.png");
			}
			$this->SetFont("ext_inc/fonts/verdana.ttf", 7);
			$this->Text ($start_x, 4, imagecolorallocate($this->img, 30, 30, 30), $text, 20);
			$this->PutImage("ext_inc/auto_images/{$auth["design"]}/$language/button_$name.png");
		}
	}
*/

	function OpenImage($filename) {
	  if (!file_exists($filename)) return 0;

		$type = strtolower(substr($filename, strrpos($filename, ".") + 1, 4));
		switch ($type) {
			default: return 0; break;
			case "png": if (ImageTypes() & IMG_PNG) $img_src = ImageCreateFromPNG($filename); break;
			case "jpeg":
			case "jpg": if (ImageTypes() & IMG_JPG) $img_src = ImageCreateFromJPEG($filename); break;
			case "gif": if (ImageTypes() & IMG_GIF) $img_src = ImageCreateFromGIF($filename); break;
			case "wbmp": if (ImageTypes() & IMG_WBMP) $img_src = ImageCreateFromWBMP($filename); break;
			case "bmp":
				include_once("ext_scripts/gd/bmp.php");
				$img_src = ImageCreateFromBMP($filename);
			break;
			case "ico":
				include_once("ext_scripts/gd/ico.php");
				$img_src = ImageCreateFromICO($filename);
			break;
			case "cur":
				include_once("ext_scripts/gd/cur.php");
				$img_src = ImageCreateFromCUR($filename);
			break;
/*			case "ani":
				include_once("ext_scripts/gd/ani.php");
				$img_src = ImageCreateFromANI($filename);
			break;*/
		}

		return $img_src;
	}


	function CreateThumb($old_file, $new_file, $max_width, $max_height) {
    global $func;
    if (($old_file != $new_file) and file_exists($new_file)) return;

		$imgsrc_old = $this->OpenImage($old_file);
    if (!$imgsrc_old) {
      $func->error("Could not open source file '$old_file'", NO_LINK);
      return false;
    } else {
  		// Calculate new size
  		$old_width = imagesx($imgsrc_old);
  		$old_height = imagesy($imgsrc_old);
  
  		$ratio_x = $old_width / $max_width;
  		$ratio_y = $old_height / $max_height;

      if ($old_width <= $max_width and $old_height <= $max_height) {
        $new_width = $old_width;
        $new_height = $old_height;
      } elseif ($ratio_x > $ratio_y and $ratio_x > 0) {
  			$new_width = $max_width;
  			$new_height = $old_height / $ratio_x;
  		} elseif ($ratio_y > 0) {
  			$new_width = $old_width / $ratio_y;
  			$new_height = $max_height;
  		} else {
  		  $func->error("Source file '$old_file' has 0x0 pixel", NO_LINK);
        return false;
      }
  
  		$this->NewImage($new_width, $new_height);
  		ImageCopyResized($this->img, $imgsrc_old, 0, 0, 0, 0, $new_width, $new_height, $old_width, $old_height);
  
      imagecolortransparent($this->img, imagecolorallocate($this->img, 255, 255, 255));
  
  		$this->PutImage($new_file);
  		ImageDestroy($imgsrc_old);
    }
		return true;
	}


	function Colorize($source_file, $r, $g, $b, $percentage) {
		if ($source_file) {
			$this->img = $this->OpenImage($source_file);
			$this->width = imagesx($this->img);
			$this->height = imagesy($this->img);
		}

		// Create Layover
		$layover = imagecreate($this->width, $this->height);
		$fill = imagefill($layover, 0, 0, imagecolorallocate($layover, $r, $g, $b));

		// Merge Layover with original image
		$merge = imagecopymerge($this->img, $layover, 0, 0, 0, 0, $this->width, $this->height, $percentage);
		imagedestroy($layover);
	}


	function MergeImages($source_file1, $source_file2, $target_file) {
		$this->img = $this->OpenImage($source_file1);
		$this->width = imagesx($this->img);
		$this->height = imagesy($this->img);

		$source_img2 = $this->OpenImage($source_file2);
		$source_img2_width = imagesx($source_img2);
		$source_img2_height = imagesy($source_img2);

		$merge = imagecopymerge($this->img, $source_img2, 0, 0, 0, 0, $this->width, $this->height, 25);

		imagedestroy($source_img2);

		$this->PutImage($target_file);
	}

}
?>