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File: docs/classes/image.md

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File: docs/classes/image.md
Role: Example script
Content type: text/markdown
Description: Example script
Class: GImage
Create graphic images with a fluent interface
Author: By
Last change: fix docs typo
Date: 28 days ago
Size: 1,858 bytes
 

Contents

Class file image Download

Image

> Image class is the parent class for Figure and Canvas classes. So Figure and Canvas be able to access to save(), crop(), output() and other methods provided by Image.

Saving

The example below loads and external imagen and save it on local.

!!! tip "Tip"

`load(f)` function can load an image file from any url or local valid path.

<?php

use GImage\Image;

$img = new Image();
$img
	->load('https://i.imgur.com/G5MR088.png')
	->scale(0.5)
    ->save('/home/my_user/images/myimage.png');

Output

Loading an image from local path, scale (50%) and output it on the browser.

<?php

use GImage\Image;

$img = new Image();
$img
	->load('/home/my_user/images/my_image.png')
	->scale(0.5)
	->output();

Preserve resource

save() and output() functions remove the image resource _in memory_ after processing. To preserve the image resource for future processings only call preserve() function before saving or outputing, then preserve(false) when your processing have been completed.

<?php

use GImage\Image;

$img = new Image();
$img
	->load('/home/my_user/images/my_image.png')
    ->centerCrop(50, 50)
    // preserve the resource before save
    ->preserve();
    // save only
	->save();
    // remove the resource after output
	->preserve(false);
    // output and remove the resource
	->output();

Reuse Image functions

Figure and Canvas extend from Image. This means that it's possible to use many inherited functions like save(), crop(), rotate() and so on.

For example the code below creates an rectangle, set an opacity to 75% and save it as PNG.

<?php

use GImage\Figure;

$figure = new Figure(400, 250);
$figure
    ->setBackgroundColor(0, 0, 255)
    ->setOpacity(0.75)
    ->create()
    ->save('/home/my_user/images/reactangle.png');