How can I use $image->size, from small to change the size of the image canvas?

[*Most Powerful Pony!*]

I have an image 500x300 

I need to apply the resizing to 150x150 without cutting edge. 

Thus in any case, I need to have the image canvas size 150x150 

When you use $ image->size (150, 150), we obtain the desired result (cropping). 

When using $ image->size (150, 150, array ('cropping' => false)) our image circumcised according to the greatest height, canvas change proportionally. / / 150x90. 

Need an image 150x90 position in the center of the canvas 150x150. 

You can do this using the API?

[Martijn Geerts]

$ratioX = 150 / $image->width;

$ratioY = 150 / $image->height;

// the least expensive, is taken for size caculation

$width = min($ratioX, $ratioY) * $image->width;

$height = min($ratioX, $ratioY) * $image->height;

$image->size($width,$height);

[*Most Powerful Pony!*]

need output image 150x150

[Martijn Geerts]

You did draw: resize the image till one of the edges reach 150px, can be width or can be height or both if the original is square.

if you don't want this, do you want to mesh up with the aspect ratio ? 

[*Most Powerful Pony!*]

Canvas is part of the image, you need to get a proportional output image 150x150, where space will be drawn in a solid color (white for example).

Canvas image it's canvas image. http://www.php.net/manual/de/imagickdraw.setviewbox.php

[horst]

I'm not sure if I understand right, but may be you can use PageImageManipulator for that?

$img = $images->first();
$url = $img->pimLoad('myprefix')->canvas(150, 150, array(255,255,255,1), 'c', 0)->pimSave()->url;

[*Most Powerful Pony!*]

There are the same, on ImageMagic?

GD spoils color in JPG

[Martijn Geerts]

First I don't understand why you would send "unnecessary" pixels over the internet. I would say, don't send them and make the space you need with the HTML container element.

Second, why do want to spoil server CPU for this.

Third, if you want to make it your self difficult. here is the documentation.

[horst]

  GD spoils color in JPG

Oh, really? Please, can you show me a example? (original | GD | and maybe one with imageMagick)

[*Most Powerful Pony!*]

http://stackoverflow.com/questions/5773032/how-to-stop-gd2-from-washing-away-the-colors-upon-resizing-images

[Martijn Geerts]

I did thought you were talking about canvas color that can be created with GD, not about incorrectness or not assigning of color profiles to images while resizing.