resize image + white background

[raduenea]

I have a php function that resize an image:

function resize_image($max_width,$max_height){	

$width = $this->getWidth($this->image_location);
$height = $this->getHeight($this->image_location);

$new_width = "";
$new_height = "";

$with_scale = $width/$max_width;
$height_scale = $height/$max_height;	

if($with_scale > $height_scale){
	$new_width = $max_width;
	$new_height = ($max_width/$width) * $height;			

}else{
	$new_height = $max_height;
	$new_width = ($max_height/$height) * $width;			

}	

$newImage = imagecreatetruecolor($new_width,$new_height);
$source = imagecreatefromjpeg($this->image_location);
imagecopyresampled($newImage,$source,0,0,0,0,$new_width,$new_height,$width,$height);
imagejpeg($newImage,$this->new_location,85);
chmod($this->new_location, 0777);
return $this->new_location;
}

 

If I use a picture that have 500x300 , and after re-size I have something 200x100 , I don't want to save it with this dimensions.

I want to put this picture with 200x100 over a white square 200x200 vertical align.

 

How can I change this code for this ?

 

Thanks

[smoseley]

resize_image_and_pad(200,200);

function resize_image_and_pad($width,$height){	

$img_width = $this->getWidth($this->image_location);
$img_height = $this->getHeight($this->image_location);
$img_scale = $img_width/$img_height;	
        	
$new_width = null;
$new_height = null;

$scale = $width/$height;

if($scale < $img_scale){
	$new_width = $width;
	$new_height = $new_width * $img_scale;
}else{
	$new_height = $height;
	$new_width = $new_height * $img_scale;
}

$x = ($width - $new_width) / 2;
$y = ($height - $new_height) / 2;


$newImage = imagecreatetruecolor($width,$height);
$source = imagecreatefromjpeg($this->image_location);
imagecopyresampled($newImage,$source,$x,$y,0,0,$new_width,$new_height,$new_width,$new_height);
imagejpeg($newImage,$this->new_location,85);
chmod($this->new_location, 0777);
return $this->new_location;
}

[raduenea]

The code that you change it doesn't return me anything.

I believe that I need a white picture with 200x200, and over to put the new 200x120 and save as one picture.

How can I do that in code ?

[Barand]

when you do your imagecopy, make the 200x200 white square your destination image and place the copy image 40 pix from the top ( (200 - 120) / 2 )

[smoseley]

The code that you change it doesn't return me anything.

I believe that I need a white picture with 200x200, and over to put the new 200x120 and save as one picture.

How can I do that in code ?

My code does exactly what you want it to.  It may have some bugs, but it is correct.  Debug it and be happy.

[raduenea]

I figure it out. here is the final code.

function resize_image($max_width,$max_height){	

$width = $this->getWidth($this->image_location);
$height = $this->getHeight($this->image_location);

$new_width = "";
$new_height = "";

$with_scale = $width/$max_width;
$height_scale = $height/$max_height;	

if($with_scale > $height_scale){
	$new_width = $max_width;
	$new_height = ($max_width/$width) * $height;			

}else{
	$new_height = $max_height;
	$new_width = ($max_height/$height) * $width;			

}	

        $x_mid  = $new_width / 2;
        $y_mid  = $new_height / 2; 

$newImage = imagecreatetruecolor($new_width,$new_height);
$source = imagecreatefromjpeg($this->image_location);
imagecopyresampled($newImage,$source,0,0,0,0,$new_width,$new_height,$width,$height);


    $final = imagecreatetruecolor($max_width, $max_height);
    imagecopyresampled($final, $newImage, 0, 0, ($x_mid - ($max_width / 2)), ($y_mid - ($max_height / 2)), $max_width, $max_height, $max_width, $max_height);
$bg_color = imagecolorallocate ($final, 255, 255, 255);
imagefill($final, 0, 0, $bg_color);


imagejpeg($final,$this->new_location,85);
chmod($this->new_location, 0777);
return $this->new_location;
}

[smoseley]

Why are you creating 2 new images?

[raduenea]

How this can be change using only 1 image ?

[smoseley]

I showed you how in my reply.  I actually spent quite a bit of time.  Why not try to read my reply and understand what I'm doing in it?