README
NgpImagePicker
Angular library for the selection, edition and compression of images in png, jpeg and webp formats This library was generated with Angular CLI version 10.0.0, and support the latest version of angular. Previous versions of this library relied entirely on angular material components. Today it is made with html and css without any extra components.
Description
In many projects it is of interest to upload images for a backend, and sometimes we have to consult other programs for the compression of images and the change of format to improve the performance of the page. With NgpImagePicker
this is possible in real time with for each image that you want to upload.
Installation
npm i ngp-image-picker --save
External Resource
NgpImagePicker
, for use the functionality of cropping images, the ResizeObserver api is used
The ResizeObserver interface reports changes to the dimensions of an Element's content or border box, or the bounding box of an SVGElement.
Install the package
npm i resize-observer --save
Usages
You must import the module NgpImagePicker
where you will use it and use the component
***
import { NgpImagePickerModule } from 'ngp-image-picker';
@NgModule({
***
imports: [
NgpImagePickerModule,
],
****
})
In your component:
<ngp-image-picker [_config]="imagePickerConf" ($imageChanged)="onImageChange($event)"></ngp-image-picker>
In .ts file
export class ExampleComponent {
imagePickerConf: ImagePickerConf = {
borderRadius: '4px',
language: 'en',
width: '320px',
height: '240px',
};
}
Here is an example with different configurations
export class ExampleComponent {
config1: ImagePickerConf = {
borderRadius: '16px',
language: 'en',
};
config2: ImagePickerConf = {
borderRadius: '50%',
language: 'es',
width: '200px',
height: '200px',
};
config3: ImagePickerConf = {
borderRadius: '4px',
language: 'en',
};
initialImage = 'https://havanatursa.com/assets/images/carousel/Hoteles.webp';
}
<h2>Basic ussage</h2>
<ngp-image-picker [_config]="config1"></ngp-image-picker>
<br />
<h2>Custom comfig</h2>
<ngp-image-picker [_config]="config2"></ngp-image-picker>
<br />
<h2>Initial Image</h2>
<ngp-image-picker [_imageSrc]="initialImage" ($imageChanged)="onImageChanged($event)" [_config]="config3"> </ngp-image-picker>
More about the component
The NgpImagePicker
component has a setting to change the width and length of the loaded image. In addition to the language (only 'es' and 'en'). It also has an initial compression option that by default is true. The interface looks like this:
export interface ImagePickerConf {
width?: string;
height?: string;
borderRadius?: string;
compressInitial?: boolean;
language?: string;
}
Editing panel
Once you have selected an image, three buttons are enabled below the image: 1- load a new image. 2-Open the editing panel. 3-Download the image.
In the edit panel, you can change the quality ratio to compress the file size (in kb). Also changing width and height in px keeping aspect ratio or not, is selectable. You can change the image format as you wish, the options are 'png', 'webp','jpeg'. The 'Png' format is not affected by changing the quality ratio.