/ php-ppcms/includes/classes/lib.image.text.class.php

<?php

/***************************************************************

*  Copyright notice

*  (c) 2009, jianyuzhu@gmail.com

*  All rights reserved

*  This script is part of the PPEMI project.

***************************************************************/



class LibImageText {

	//text

	var $text = '';

	

	//

	var $font_path = 'images/fonts/';

	var $font_list = array(

        'Antykwa'  => array('spacing' => -3, 'minSize' => 27, 'maxSize' => 40, 'font' => 'AntykwaBold.ttf'),

        'Candice'  => array('spacing' =>-1.5,'minSize' => 28, 'maxSize' => 31, 'font' => 'Candice.ttf'),

        'DingDong' => array('spacing' => -2, 'minSize' => 24, 'maxSize' => 30, 'font' => 'Ding-DongDaddyO.ttf'),

        'Duality'  => array('spacing' => -2, 'minSize' => 30, 'maxSize' => 38, 'font' => 'Duality.ttf'),

        'Heineken' => array('spacing' => -2, 'minSize' => 24, 'maxSize' => 34, 'font' => 'Heineken.ttf'),

        'Jura'     => array('spacing' => -2, 'minSize' => 28, 'maxSize' => 32, 'font' => 'Jura.ttf'),

        'StayPuft' => array('spacing' =>-1.5,'minSize' => 28, 'maxSize' => 32, 'font' => 'StayPuft.ttf'),

        'Times'    => array('spacing' => -2, 'minSize' => 28, 'maxSize' => 34, 'font' => 'TimesNewRomanBold.ttf'),

        'VeraSans' => array('spacing' => -1, 'minSize' => 20, 'maxSize' => 28, 'font' => 'VeraSansBold.ttf'),

        'HANDGOTB' => array('spacing' => -1, 'minSize' => 20, 'maxSize' => 28, 'font' => 'HANDGOTB.TTF'),

    );

	var $font_name = 'HANDGOTB';

	

	//Background color

	var $backgroundColor = array(248, 248, 248);

	//Foreground color

	var $foregroundColor = array(0, 0, 0);

    //Foreground colors

    var $colors = array(

        //array(27,78,181), // blue

        //array(22,163,35), // green

        //array(214,36,7),  // red

		array(0,0,0),	  // black

		//array(255,255,255),//white

    );

	//Shadow Color

	var $shadowColor = null; //array(0, 0, 0);

	

    //Min word length (for non-dictionary random text generation)

    var $minWordLength = 5;



    /**

     * Max word length (for non-dictionary random text generation)

     * 

     * Used for dictionary words indicating the word-length

     * for font-size modification purposes

     */

    var $maxWordLength = 30;

	

	//

	var $width = 480;

	var $height = 50;

	var $imageFormat = 'jpg';

	

	//

	var $save_path = 'images/texts/';

	var $save_type = '';

	var $save_image = false;

	var $save_filename = '';

	var $save_name = '';

	

    //Internal image size factor (for better image quality)

	//1: low, 2: medium, 3: high

    var $scale = 1;

	

	//

	var $im;

	

	//constructor

	function LibImageText() {

		

	}

	

	//methods

	function image() {

		$text = $this->text;

		//

        $this->_image_allocate();

		if( $this->font_name != '' && isset($this->font_list[$this->font_name]) ) {

			$fontcfg = $this->font_list[$this->font_name];

		} else {

        	$fontcfg  = $this->font_list[array_rand($this->font_list)];

		}

        $this->_image_text_wh($text, $fontcfg);



        if( $this->blur && function_exists('imagefilter') ) {

            imagefilter($this->im, IMG_FILTER_GAUSSIAN_BLUR);

        }

        $this->_image_reduce();

		

		if( $this->save_image == true ) {

        	$this->_image_save();

		} else {

        	$this->_image_write();

		}

        $this->_image_cleanup();

	}

	

	//

    function _image_allocate() {

		// Cleanup

		if (!empty($this->im)) {

			imagedestroy($this->im);

        }

		

		$this->im = imagecreatetruecolor($this->width*$this->scale, $this->height*$this->scale);



        // Background color

        $this->GdBgColor = imagecolorallocate($this->im,

            $this->backgroundColor[0],

            $this->backgroundColor[1],

            $this->backgroundColor[2]

        );

        imagefilledrectangle($this->im, 0, 0, $this->width*$this->scale, $this->height*$this->scale, $this->GdBgColor);



        // Foreground color

        $color           = $this->colors[mt_rand(0, sizeof($this->colors)-1)];

        $this->GdFgColor = imagecolorallocate($this->im, $color[0], $color[1], $color[2]);



        // Shadow color

        if (!empty($this->shadowColor) && is_array($this->shadowColor) && sizeof($this->shadowColor) >= 3) {

            $this->GdShadowColor = imagecolorallocate($this->im,

                $this->shadowColor[0],

                $this->shadowColor[1],

                $this->shadowColor[2]

            );

        }

    }

	

	//

	function _image_text($text, $fontcfg = array()) {

		if (empty($fontcfg)) {

			// Select the font configuration

			$fontcfg  = $this->font_list[array_rand($this->font_list)];

		}

		

		// Full path of font file

		$fontfile = $this->font_path . $fontcfg['font'];

		

		//Increase font-size for shortest words: 9% for each glyp missing

		$lettersMissing = $this->maxWordLength-strlen($text);

		$fontSizefactor = 1+($lettersMissing*0.09);

		

		// Text generation (char by char)

		$x      = 20*$this->scale;

		$y      = round(($this->height*27/40)*$this->scale);

		$length = strlen($text);

		for ($i=0; $i<$length; $i++) {

			//$degree   = rand($this->maxRotation*-1, $this->maxRotation);

			//$fontsize = rand($fontcfg['minSize'], $fontcfg['maxSize'])*$this->scale*$fontSizefactor;

			$degree = 0;

			$fontsize = $fontcfg['maxSize']*$this->scale*$fontSizefactor;

			$letter   = substr($text, $i, 1);

			

			if( $this->shadowColor ) {

				$coords = imagettftext($this->im, $fontsize, $degree,

								$x+$this->scale, $y+$this->scale,

								$this->GdShadowColor, $fontfile, $letter);

			}

			$coords = imagettftext($this->im, $fontsize, $degree,

								$x, $y,

								$this->GdFgColor, $fontfile, $letter);

			$x += ($coords[2]-$x) + ($fontcfg['spacing']*$this->scale);

		}

	}

	

	//

	function _image_texts($text, $fontcfg = array()) {

		if (empty($fontcfg)) {

			// Select the font configuration

			$fontcfg  = $this->font_list[array_rand($this->font_list)];

		}

		

		// Full path of font file

		$fontfile = $this->font_path . $fontcfg['font'];

		

		//Increase font-size for shortest words: 9% for each glyp missing

		$lettersMissing = $this->maxWordLength-strlen($text);

		$fontSizefactor = 1+($lettersMissing*0.09);

		

		// Text generation (char by char)

		$x      = 20*$this->scale;

		$y      = round(($this->height*27/40)*$this->scale);

		$degree = 0;

		$fontsize = $fontcfg['maxSize']*$this->scale*$fontSizefactor;

		

		//$fontsize = 20;

		

		//

		if( $this->shadowColor ) {

			$coords = imagettftext($this->im, $fontsize, $degree,

							$x+$this->scale, $y+$this->scale,

							$this->GdShadowColor, $fontfile, $text);

		}

		$coords = imagettftext($this->im, $fontsize, $degree,

							$x, $y,

							$this->GdFgColor, $fontfile, $text);

	}

	

	//

	function _image_text_wh($text, $fontcfg = array()) {

		if (empty($fontcfg)) {

			// Select the font configuration

			$fontcfg  = $this->font_list[array_rand($this->font_list)];

		}

		

		// Full path of font file

		$fontfile = $this->font_path . $fontcfg['font'];

		

		$text_size = 20;

		$text_angle = 0;

		$text_box = imagettfbbox($text_size, $text_angle, $fontfile, $text);

		$text_w = $text_box['2'] - $text_box['0'];

		$text_h = $text_box['3'] - $text_box['5'];

		//$text_x = ceil(($this->width - $text_w)/2);

		//$text_y = $text_h+10;

		$text_x = 10;

		$text_y = $text_h + ceil(($this->height - $text_h)/2);

		

		imagettftext($this->im, $text_size, $text_angle, $text_x, $text_y, $this->GdFgColor, $fontfile, $text);

	}

	

	//

	function _image_reduce() {

		$imResampled = imagecreatetruecolor($this->width, $this->height);

		imagecopyresampled($imResampled, $this->im,

			0, 0, 0, 0,

			$this->width, $this->height,

			$this->width*$this->scale, $this->height*$this->scale

		);

		imagedestroy($this->im);

		$this->im = $imResampled;

	}

	

	//

	function _image_write() {

		if( $this->imageFormat == 'png' && function_exists('imagepng') ) {

			header("Content-type: image/png");

			imagepng($this->im);

		} else {

			header("Content-type: image/jpeg");

			imagejpeg($this->im, null, 80);

		}

	}

	

	//

	function _image_save() {

		$file = $this->_image_file();

		if( $this->imageFormat == 'png' && function_exists('imagepng') ) {

			imagepng($this->im, $file);

		} else {

			imagejpeg($this->im, $file, 80);

		}

	}

	

	//

	function _image_cleanup() {

		imagedestroy($this->im);

		$this->im = NULL;

	}

	

	//

	function _image_file() {

		$filename = $this->_image_filename();

		$this->save_filename = $filename;

		

		return $this->save_path . $filename;

	}

	

	//

	function _image_filename() {

		$filename = $this->_generate_filepath() . $this->_generate_filename();

		if( file_exists($this->save_path . $filename) ) {

			return $this->_image_filename();

		}

		

		return $filename;

	}

	

	//

	function _random() {

		return util_create_random_value('8', 'mixed');

	}

	

	function _generate_filename() {

		if( $this->imageFormat == 'png' && function_exists('imagepng') ) {

			$extension = 'png';

		} else {

			$extension = 'jpg';

		}

		

		if( $this->save_name != '' ) {

			return $this->save_name . '.' . $extension;

		}

		

		return substr(md5(time()), 0, 16) . '_' . $this->_random() . '.' . $extension;

	}

	

	function _generate_filepath() {

		if( !is_dir($this->save_path) ) {

			die("ERROR DIR");

		}

		$save_subdir = '';

		if( $this->save_type == 'month' ) {

			$save_subdir = strftime("%Y%m", time());

		} elseif( $this->save_type == 'day' ) {

			$save_subdir = strftime("%Y%m%d", time());

		} elseif( $this->save_type == 'random' ) {

			$save_subdir = substr(md5(strftime("%Y%m", time())), 0, 6);

		}

		$save_subdir = trim($save_subdir);

		if( strlen($save_subdir) > 0 ) {

			if( !is_dir($this->save_path . $save_subdir . '/') ) {

				@mkdir($this->save_path . $save_subdir . '/');

			}

			$filepath = $save_subdir . '/';

			if( !is_dir($this->save_path . $filepath) ) {

				die("ERROR DIRS");

			}

		} else {

			$filepath = $save_subdir;

		}

		

		return $filepath;

	}

}

//

?>