Re: Calculate string width using some font.

From: Date: Mon, 05 Feb 2007 19:54:47 +0000
Subject: Re: Calculate string width using some font.
References: 1 2 3 4  Groups: php.general 
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setcookie wrote:
pdf_stringwidth() may help you regards fra*
Yea I saw that too but you know, pdflib is not free.
Hey list! :)
        
my name's not list but what the heck: take a look at these function, they should light the way: http://php.net/manual/en/function.imageftbbox.php http://php.net/manual/en/function.imagepsbbox.php http://php.net/manual/en/function.imagettfbbox.php http://php.net/imageloadfont everything is pixels. there is no dpi - your screen & printer has a certain dpi and that
      
determine
how big the image displays on either. okay not much help - I had brain freeze half thru.
      
K, np, Ill try use imagettfbbox() function instead. Thx.
    
I've got a problem trying to calculate a string width using an X font
with some Y font size to use in an svg-to-pdf conversion. This is what I try to do: 1. Create a dummy image. 2. Set the text there using font X and the font size Y (it seems that when I create the image it renders it at 72dpi so I need to reduce it
        
at
300dpi) I'm not sure what the imagettftext() function returns, are those
        
values
measured in pixels ?
        
yes.
      
I read in some page that the proportion to reduce
the image at 300dpi is reduce the size to 24% of its original size. http://www.printingforless.com/resolution.html That's the code: *** // Create dummy image. $rsc_image = imagecreate( 1, 1 ); // Set image. $arr_ftx = imagettftext( $rsc_image, $int_font_size, 0, 0, 0, -1, "./fonts/{$str_font_file}", $str_variable_value ); // Destroy dummy image. imagedestroy( $rsc_image ); // Set structure of widths. // TODO: Magik numbers. $arr_variable_pixels[$str_variable_index] = ( ( $arr_ftx[2] * 24 ) /
        
100 );
*** Thx for any help.
        


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