Posts: 19
Name: Colton
Location: NC, USA
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Since I'm all about sharing code that I've randomly came up with, here's another little project that I've had going on for quite a bit. This is probably the 3rd or 4th fork from the original dirty code that I threw together. This one is actually heading towards completion.
Code:
<?php
/**
* PHP GD Library Imager
*
* @author Colton
* @version 0.2
* @copyright Net Refuge 2010
*/
class Imager {
protected $img;
protected $data;
public function __construct() {
$this->setoptions(array(
'background-color'=>'#FFF',
'title-color' => '#000',
'text-color' => '#555',
'font-size' => 12,
'font-file' => 'framd.ttf',
'caption-pos' => 'bottom',
'caption-box' => true,
'line-color' => '#FF0',
'fill-color' => '#0CF',
'border-width' => 0,
'margin-color' => '#FFF',
'margin-left' => 0,
'margin-right' => 0,
'margin-bottom' => 0,
'margin-top' => 0,
'opacity' => 0
));
return $this;
}
public function __destruct() {
$this->output();
}
public function set($options,$value=null) {if(is_array($options))$this->setoptions($options);else $this->setoptions(array($options=>$value));return $this;}
protected function setoptions($options) {if(is_array($options))foreach($options as $k=>$v)$this->options[$k]=$this->hex2rgb($v);}
protected function check() {if(@get_resource_type($this->img)!='gd')return false;else return true;}
protected function color($c,$notrans=false) {if(!$this->check())exit;$c=$this->options[$c];if($notrans==false)$c=imagecolorallocatealpha($this->img,$c[0],$c[1],$c[2],$this->options['opacity']);else $c=imagecolorallocate($this->img,$c[0],$c[1],$c[2]); return $c;}
protected function hex2rgb($hex) {
if(!is_string($hex))return $hex;
if(substr($hex,0,1)=="#"){
$hex=substr($hex,1);
if(strlen($hex)==6)$rgb=array($hex[0].$hex[1],$hex[2].$hex[3],$hex[4].$hex[5]);
elseif(strlen($hex)==3)$rgb=array(str_repeat($hex[0],2),str_repeat($hex[1],2),str_repeat($hex[2],2));
else return $hex;
} else return $hex;
foreach($rgb as $k=>$c)$rgb[$k]=hexdec($c);
return $rgb;
}
public function create($w,$h) {
if ($this->check()) exit;
$this->data=(object)array(
'width' => $w,
'height' => $h,
'type' => IMAGETYPE_PNG
);
$this->img=imagecreatetruecolor($w,$h);
imagefill($this->img,0,0,$this->color('background-color'));
return $this;
}
public function loadImage($file) {
if ($this->check()) exit;
try {
if(!file_exists($file))throw new Error("File does not exist: {$file}");
if($this->img=@imagecreatefrompng($file));
elseif($this->img=@imagecreatefromjpeg($file));
elseif($this->img=@imagecreatefromgif($file));
elseif($this->img=@imagecreatefromstring($file));
else throw new Error("Unable to create image from file. The file could be corrupted, or not recognized by the PHP GD library.");
$tmp=getimagesize($file);
$this->data=(object)array(
'filename' => $file,
'width' => $tmp[0],
'height' => $tmp[1],
'type' => image_type_to_mime_type($tmp[2])
);
} catch(Error $err){$err=str_replace("\n","<br />",$err);die("<b>[Imager Error]</b> {$err}");}
return $this;
}
protected function getboundary($text,$size=null) {
$box=imagettfbbox((!empty($size)?$size:$this->options['font-size']),$this->options['font-angle'],$this->options['font-file'],$text);
$box=array('min_x'=>min(array($box[0],$box[2],$box[4],$box[6])),
'min_y'=>min(array($box[1],$box[3],$box[5],$box[7])),
'max_x'=>max(array($box[0],$box[2],$box[4],$box[6])),
'max_y'=>max(array($box[1],$box[3],$box[5],$box[7])));
$box=array('width'=>abs($box['max_x']-$box['min_x']),'height'=>abs($box['max_y']-$box['min_y']));
return $box;
}
public function caption($title,$text,$x,$y) {
if (!$this->check()) exit;
$x+=$this->options['border-width'];$y+=$this->options['border-width'];
$pos[]=$this->getboundary($title);
$pos[]=$this->getboundary($text,$this->options['font-size']*.7);
list($w,$h)=array($x,$y);
if ($this->options['caption-pos']=='right'){$w+=$pos[0]['width']+$pos[1]['width'];$h+=($pos[1]['height']>$pos[0]['height']?$pos[1]['height']:$pos[0]['height']);}
else {$w+=($pos[0]['width']>$pos[1]['width']?$pos[0]['width']:$pos[1]['width']);$h+=$pos[0]['height']+$pos[1]['height'];}
if($this->options['caption-box']==true)$this->borderedrectangle($x,$y,$w+$this->options['font-size']+($this->options['caption-pos']=='right'?10:5),$h+$this->options['font-size']+($this->options['caption-pos']=='right'?5:0));
if($this->options['caption-pos']=='right') imagettftext($this->img,$this->options['font-size']*.7,0,$x+$pos[0]['width']+15,$y+5+$this->options['font-size'],$this->color('text-color'),$this->options['font-file'],$text);
else imagettftext($this->img,$this->options['font-size']*.7,0,$x+7,$y+2+$this->options['font-size']+$pos[0]['height'],$this->color('text-color'),$this->options['font-file'],$text);
imagettftext($this->img,$this->options['font-size'],0,$x+5,$y+5+$this->options['font-size'],$this->color('title-color'),$this->options['font-file'],$title.($this->options['caption-pos']=='right'?':':''));
return $this;
}
public function text($text,$x,$y) {
imagettftext($this->img,$this->options['font-size'],$this->options['font-angle'],$x,$y,$this->color('text-color'),$this->options['font-file'],$text);
return $this;
}
public function verticaltext($text,$x,$y) {
$tmp=null;
for ($i=0;$i<=strlen($text);$i++)$tmp.=substr($text,$i,1)."\n";
$this->text($tmp,$x,$y);
return $this;
}
public function circle($cx,$cy,$radius) {
imageellipse($this->img,$cx,$cy,$radius,$radius,$this->color('line-color'));
return $this;
}
public function filledcircle($cx,$cy,$radius) {
imagefilledellipse($this->img,$cx,$cy,$radius,$radius,$this->color('fill-color'));
return $this;
}
public function borderedcircle($cx,$cy,$radius) {
$this->filledcircle($cx,$cy,$radius);
$this->options['line-color']=$this->options['border-color'];
for($i=1;$i<=$this->options['border-width'];$i++) $this->circle($cx,$cy,$radius+$i);
return $this;
}
public function rectangle($x1,$y1,$x2,$y2) {
imagerectangle($this->img,$x1,$y1,$x2,$y2,$this->color('line-color'));
return $this;
}
public function filledrectangle($x1,$y1,$x2,$y2) {
imagefilledrectangle($this->img,$x1,$y1,$x2,$y2,$this->color('fill-color'));
return $this;
}
public function borderedrectangle($x1,$y1,$x2,$y2) {
$this->filledrectangle($x1,$y1,$x2,$y2);
$this->options['line-color']=$this->options['border-color'];
for($i=1;$i<=$this->options['border-width'];$i++) $this->rectangle($x1-$i,$y1-$i,$x2+$i,$y2+$i);
return $this;
}
public function createmargins() {
$size=array($this->data->width+$this->options['margin-left']+$this->options['margin-right'],$this->data->height+$this->options['margin-top']+$this->options['margin-bottom']);
$tmp=imagecreatetruecolor($size[0],$size[1]);
imagefill($tmp,0,0,$this->color('margin-color',true));
imagecopyresampled($tmp,$this->img,$this->options['margin-left'],$this->options['margin-top'],0,0,$this->data->width,$this->data->height,$this->data->width,$this->data->height);
list($this->img,$this->data->width,$this->data->height)=array($tmp,$size[0],$size[1]);
$this->set(array('margin-left'=>0,'margin-right'=>0,'margin-top'=>0,'margin-bottom'=>0));
return $this;
}
public function resize($w=null,$h=null) {
if(empty($w))$w=$this->data->width;
if(empty($h))$h=$this->data->height;
$tmp=imagecreatetruecolor($w,$h);
imagecopyresampled($tmp,$this->img,0,0,0,0,$w,$h,$this->data->width,$this->data->height);
list($this->img,$this->data->width,$this->data->height)=array($tmp,$w,$h);
return $this;
}
public function output() {
if(!$this->check())exit;
header("Content-type: {$this->data->type}");
imagepng($this->img);
imagedestroy($this->img);
return $this;
}
public function save($file,$type=0) {
if (!$this->check()) exit;
if($type==1)imagegif($this->img,$file);
elseif($type==2)imagejpeg($this->img,$file,100);
else imagepng($this->img,$file,9);
return $this;
}
}
class Error extends Exception {}
?>
This code is not completed. I'm only about 30% done with this code right now. However, it's current functionality may still be able to help with some of your imaging problems.
Usage:
This script allows chain coding. For those of you that don't know PHP OOP, this means that you can call one command after the other (as you can in Javascript objects) without having to use the variable over and over. Example:
Code:
<?php
include 'imager.php';
$tmp=new Imager;
$tmp->set('background-color','#000')->create(500,500)->caption('Caption Title', 'Caption Text', 10, 10);
?>
Feedback and comments welcome, as well as suggestions for things to implement. |
