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P: 245
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Hey all,
I have created transparent PNG images from text dynamically. But it edges are pixel-ate or we can say edges are distorted.
Here is my LINK which shows my generated transparent PNG image. Can someone help me out to sort out my problem i will be very grateful to him as i am stuck bad with this issue and i am not figuring out how to fix this.
Here is my Code which generate transparent PNG images - <img src="generate-headings.php?text=Company Profile&font_color=F67538" alt="Company Profile" border="0" />
Generate-headings.php file code -
<?
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//$font_file = 'fonts/arial.ttf' ;
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//$font_file = 'fonts/EurostileLTStd-Demi.otf';
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if($_GET['font_file']){$font_file = "fonts/".$_GET['font_file'].".ttf";}else{$font_file = 'fonts/arial.ttf';}
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if($_GET['font_size']){$font_size = $_GET['font_size'] ;}else{$font_size = 18 ;}
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if($_GET['font_color']){$font_color = '#'.$_GET['font_color'];}else{$font_color = '#ffffff';}
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if($_GET['bg_color']){$background_color = '#'.$_GET['bg_color'];}else{$background_color = '#ffffff';}
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$transparent_background = true ;
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$cache_images = true ;
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$cache_folder = 'cache' ;
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$mime_type = 'image/png' ;
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$extension = '.png' ;
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$send_buffer_size = 4096 ;
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$text = $_GET['text'];
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//$text = "Mohsin";
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if(get_magic_quotes_gpc()){
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$text = stripslashes($text) ;
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}
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$text = javascript_to_html($text) ;
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// look for cached copy, send if it exists
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$hash = md5(basename($font_file) . $font_size . $font_color . $background_color . $transparent_background . $text) ;
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$cache_filename = $cache_folder . '/' . $hash . $extension ;
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if($cache_images && ($file = @fopen($cache_filename,'rb'))){
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header('Content-type: ' . $mime_type) ;
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while(!feof($file))
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print(($buffer = fread($file,$send_buffer_size))) ;
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fclose($file) ;
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exit ;
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}
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// check font availability
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$font_found = is_readable($font_file) ;
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if(!$font_found){
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//fatal_error('Error: The server is missing the specified font.') ;
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}
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// create image
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$background_rgb = hex_to_rgb($background_color) ;
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$font_rgb = hex_to_rgb($font_color) ;
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$dip = get_dip($font_file,$font_size) ;
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$box = @imagettfbbox($font_size,0,$font_file,$text);
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if($_GET['width']){
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$width=$_GET['width'];
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}else{
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$width=(abs($box[2]-$box[0])+4);
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}
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$image = @imagecreate($width,abs($box[5]-$dip)) ;
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if(!$image || !$box){
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fatal_error('Error: The server could not create this heading image.') ;
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}
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// allocate colors and draw text
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$background_color = @ImageColorAllocate($image,$background_rgb['red'],$background_rgb['green'],$background_rgb['blue']) ;
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$font_color = ImageColorAllocate($image,$font_rgb['red'],$font_rgb['green'],$font_rgb['blue']) ;
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ImageTTFText($image,$font_size,0,-$box[0],abs($box[5]-$box[3])-$box[1],$font_color,$font_file,$text) ;
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// set transparency
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if($transparent_background)
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imagecolortransparent($image,$background_color) ;
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header('Content-type: ' . $mime_type) ;
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ImagePNG($image) ;
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// save copy of image for cache
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if($cache_images){
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@imagepng($image,$cache_filename) ;
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}
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imagedestroy($image) ;
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exit ;
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/*$im = imagecreatetruecolor(300, 18);
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$white = imagecolorallocate($im, 255, 255, 255);
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$black = imagecolorallocate($im, 0, 0, 0);
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imagefilledrectangle($im, 0, 0, imagesx($im), imagesy($im), gd_bkg());
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$text = $_GET[hd];
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$font = "fonts/Abduction.ttf";
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imagettftext($im,14,0,0,13,$black,$font,$text);
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imagepng($im);
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imagedestroy($im);
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$background_rgb = hex_to_rgb($background_color) ;
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$background_color = @ImageColorAllocate($image,$background_rgb['red'],*/
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//=============================== FUNCTIONS =================
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function javascript_to_html($text){
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$matches = null ;
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preg_match_all('/%u([0-9A-F]{4})/i',$text,$matches) ;
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if(!empty($matches)) for($i=0;$i<sizeof($matches[0]);$i++)
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$text = str_replace($matches[0][$i],'&#'.hexdec($matches[1][$i]).';',$text) ;
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return $text ;
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}
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function hex_to_rgb($hex){
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// remove '#'
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if(substr($hex,0,1) == '#')
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$hex = substr($hex,1) ;
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// expand short form ('fff') color
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if(strlen($hex) == 3){
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$hex = substr($hex,0,1) . substr($hex,0,1) . substr($hex,1,1) . substr($hex,1,1) . substr($hex,2,1) . substr($hex,2,1) ;
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}
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if(strlen($hex) != 6)
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fatal_error('Error: Invalid color "'.$hex.'"') ;
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// convert
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$rgb['red'] = hexdec(substr($hex,0,2)) ;
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$rgb['green'] = hexdec(substr($hex,2,2)) ;
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$rgb['blue'] = hexdec(substr($hex,4,2)) ;
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return $rgb ;
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}
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function get_dip($font,$size){
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$test_chars = 'abcdefghijklmnopqrstuvwxyz' .
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'ABCDEFGHIJKLMNOPQRSTUVWXYZ' .
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'1234567890' .
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'!@#$%^&*()\'"\\/;.,`~<>[]{}-+_-=' ;
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$box = @ImageTTFBBox($size,0,$font,$test_chars) ;
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return $box[3] ;
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}
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?>
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kind regards,
Mohsin Rafique
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