<?php

##################################################################################################################
## Settings

# GIF or PNG image of the avatar
$AVATAR = './your_avatar.gif';

# Orientation of avatar: left or right
$ORIENTATION = 'left';

#Filename of the TTF font to use as text.
#This should either be the full path ("/usr/share/fonts/font.ttf")
#or the filename of a font found in one of the fontpaths defined
#in php.ini
$FONT_FACE = 'arial.ttf';

#The size of the fonts
$FONT_SIZE = 8;

#The width of the whole image in pixels
$FULL_WIDTH = 280;

#If the text isn't defined, say something else instead
$DEFAULT_SPEECH = "I have nothing to say.";

#The stamp text that you want to watermark the image with
#(probably your website name).
$STAMP_TEXT = 'www.wheelybird.com';
$STAMP_FONT_SIZE = 9;

#Define the RGB channels for various components

$SPEECHBUBBLE_COL['red'] = 255;
$SPEECHBUBBLE_COL['blue'] = 200;
$SPEECHBUBBLE_COL['green'] = 200;

$TEXT_COL['red'] = 30;
$TEXT_COL['green'] = 0;
$TEXT_COL['blue'] = 0;

$STAMP_TEXT_COL['red'] = 200;
$STAMP_TEXT_COL['green'] = 200;
$STAMP_TEXT_COL['blue'] = 200;


##########################################################################################################################
##################### Code

isset($text) ? $speech= stripslashes($text) : $speech = $DEFAULT_SPEECH;

strip_tags($speech);

if (strlen($speech) > 255) {
 $speech = substr($speech,0,254); 
}

list($avatar_width, $avatar_height, $avatar_type, $avatar_attr) = getimagesize($AVATAR) or die ("Can't load avatar image");

if ($avatar_type != 1 and $avatar_type != 3) {
 die("Avatar image isn't a GIF or PNG");
}

$speechbubble_width = $FULL_WIDTH - 16;
$speech_attrs = imageWordWrapBBox($speech, $speechbubble_width, $FONT_SIZE,
$FONT_FACE);
$speechbubble_height = $speech_attrs[2];
$full_height = $speechbubble_height + $avatar_height + 10;
$text_y_start = abs(17 + (($speech_attrs[0] / 100) * 33));

$speech_im = imagecreate($FULL_WIDTH, $full_height);

if ($avatar_type == 1) {
 $avatar_im = imagecreatefromgif("$AVATAR");
}
else {
 $avatar_im = imagecreatefrompng("$AVATAR");
}

$border_col['red'] = abs($SPEECHBUBBLE_COL['red'] / 5);
$border_col['green'] = abs($SPEECHBUBBLE_COL['green'] / 5);
$border_col['blue'] = abs($SPEECHBUBBLE_COL['blue'] / 5);

$trans_col = imagecolorallocate($speech_im, 190, 190, 190);
$bg_col = imagecolorallocate($speech_im, $SPEECHBUBBLE_COL['red'], $SPEECHBUBBLE_COL['green'], $SPEECHBUBBLE_COL['blue']);
$text_col = imagecolorallocate($speech_im, $TEXT_COL['red'], $TEXT_COL['green'], $TEXT_COL['blue']);
$bubble_border_col = imagecolorallocate($speech_im, $border_col['red'], $border_col['green'], $border_col['blue']);
$stamp_text_col = imagecolorallocate($speech_im, $STAMP_TEXT_COL['red'], $STAMP_TEXT_COL['green'], $STAMP_TEXT_COL['blue']);

imagefill($speech_im, 0, 0, $trans_col);

$ORIENTATION == 'left' ? $stamp_x = $avatar_width + 1 : $stamp_x = 5;
imagettftext($speech_im, $STAMP_FONT_SIZE, 0, $stamp_x, $full_height-($STAMP_FONT_SIZE + 5), $stamp_text_col, $FONT_FACE, $STAMP_TEXT);


imagecolortransparent($speech_im,$trans_col);

# Draw corners & joining lines
imagearc($speech_im, 12, 12, 20, 20, 180, 275, $bubble_border_col);
imagearc($speech_im, $speechbubble_width, 12, 20, 20, 275, 0, $bubble_border_col);
imagearc($speech_im, $speechbubble_width, $speechbubble_height, 20, 20, 0, 90, $bubble_border_col);
imagearc($speech_im, 12, $speechbubble_height, 20, 20, 90, 180, $bubble_border_col);

imageline($speech_im, $speechbubble_width+10, 12, $speechbubble_width+10, $speechbubble_height, $bubble_border_col );
imageline($speech_im, 2, 12, 2, $speechbubble_height, $bubble_border_col );
imageline($speech_im, 12, 2, $speechbubble_width, 2, $bubble_border_col );

# Draw speech indicator

$indicator_y_start = $speechbubble_height + 10;
$indicator_circ = 60;

if ($ORIENTATION == 'left') {

 imagearc($speech_im, $avatar_width + 5, $indicator_y_start, $indicator_circ, $indicator_circ, 0, 90, $bubble_border_col);
 imagearc($speech_im, $avatar_width + 5, $indicator_y_start, $indicator_circ + 40, $indicator_circ, 0, 90, $bubble_border_col);
 
 $join1 = $avatar_width + 35;
 $join2 = $avatar_width + 55;
 
 imageline($speech_im, 12, $speechbubble_height+10, $join1, $speechbubble_height+10, $bubble_border_col );
 imageline($speech_im, $join2, $speechbubble_height+10, $speechbubble_width, $speechbubble_height+10, $bubble_border_col );
 $avatar_x = 0;
 
}
else {

 imagearc($speech_im, ($FULL_WIDTH - $avatar_width) - 5, $indicator_y_start, $indicator_circ, $indicator_circ, 90, 180, $bubble_border_col);
 imagearc($speech_im, ($FULL_WIDTH - $avatar_width) - 5, $indicator_y_start, $indicator_circ + 30, $indicator_circ, 90, 180, $bubble_border_col);
 
 $join1 = ($FULL_WIDTH - $avatar_width) - 50;
 $join2 = ($FULL_WIDTH - $avatar_width) - 35; 
 
 imageline($speech_im, 12, $speechbubble_height+10, $join1, $speechbubble_height+10, $bubble_border_col );
 imageline($speech_im, $join2, $speechbubble_height+10, $speechbubble_width, $speechbubble_height+10, $bubble_border_col );
 $avatar_x = $FULL_WIDTH - $avatar_width;

}

imagefill($speech_im, 30, 5, $bg_col);
imagecopy($speech_im, $avatar_im, $avatar_x, $full_height-$avatar_height, 0,0, $avatar_width, $avatar_height);
imageWordWrap($speech_im, $speech, $speechbubble_width, $text_col, 10,$text_y_start, $FONT_SIZE, $FONT_FACE);

header ("Content-type: image/gif");
imagegif($speech_im);
imagedestroy($speech_im);
imagedestroy($avatar_im);


##### FUNCTIONS
## Code taken and modified (ever so slightly) from php.net

function imageWordWrapBBox ( $Text, $Width = 400, $FontSize = 10, $Font )
{
   $Words = split ( ' ', $Text );
   $Lines = array ( );
   $Line  = '';

   foreach ( $Words as $Word )
   {
       $Box  = imagettfbbox ( $FontSize, 0, $Font, $Line . $Word );
       $Size = $Box[4] - $Box[0];
       if ( $Size > $Width )
       {
           $Lines[] = trim ( $Line );
           $Line    = '';
       }
       $Line .= $Word . ' ';
   }
   $Lines[] = trim ( $Line );

   $Dimensions = imagettfbbox ( $FontSize, 0, $Font, 'AJLMYabdfghjklpqry019`@$^&*(,' );
   $lineHeight = $Dimensions[1] - $Dimensions[5];

   return array ( $lineHeight, $Lines, $lineHeight * count ( $Lines ) );
}

function imageWordWrap ( $Image, $Text, $Width, $Color, $X = 0, $Y = 0, $FontSize = 10, $Font )
{
   $Data = imageWordWrapBBox ( $Text, $Width, $FontSize, $Font );

   foreach ( $Data[1] as $Key => $Line )
   {
       $locX = $X;
       $locY = $Y + ( $Key * $Data[0] );
       imagettftext ( $Image, $FontSize, 0, $locX, $locY, $Color, $Font, $Line );
   }

   return $Data;
}

?>