Demo

Check out the live demo: ng2-fittext Demo

Installation

Install the library using npm according to your angular version (see table below):

| Angular | ng2-fittext | command | |---------|-------------|-------------------------------| | <= v17 | 1.4.3 | npm i [email protected] | | >= v18 | 2.0.0 | npm i [email protected] |

Usage

1. Import the module in your Angular application:

import { Ng2FittextModule } from "ng2-fittext";

@NgModule({
  imports: [Ng2FittextModule]
})

2. Use the directive in your components:

import { Component } from '@angular/core';

@Component({
  selector: 'label',
  template: `
    <div #container>
      <div [fittext]="true" [activateOnResize]="true" [container]="container">Bla bla bla...</div>
    </div>
  `
})
export class LabelComponent {}

Examples

Fit to the parent element (works if you have a variable number of elements between your element and its parent):

import { Component } from '@angular/core';

@Component({
  selector: 'label',
  template: `
    <div>
      <div [fittext]="true" [activateOnResize]="true">Bla bla bla...</div>
    </div>
  `
})
export class LabelComponent {}

NEW! Support for auto-resize input box:

import { Component } from '@angular/core';

@Component({
  selector: 'inputbox',
  template: `
    <div #container>
      <input [fittext]="true" [activateOnResize]="true" [container]="container" [activateOnInputEvents]="true">
    </div>
  `
})
export class InputBoxComponent {}

NEW! Support for maxFontSize:

import { Component } from '@angular/core';

@Component({
  selector: 'inputbox',
  template: `
    <div>
      <input [fittext]="true" [activateOnResize]="true" [activateOnInputEvents]="true" [minFontSize]="40" [maxFontSize]="100">
    </div>
  `
})
export class InputBoxComponent {}

Input Parameters:

| Parameter | Description | Values | | ------------------------------- | --------------------------------------------------------------------------------------- | ----------------------------- | | fittext | Directive selector | true/false | | container | The container to fit (if not present it fits to the parent container by default) | ElementRef | | activateOnResize | Enable/disable the autofit on window resize | true or false (default false) | | activateOnInputEvents | Enable/disable the auto-fit in case of input box events (keydown, keyup etc..) | true or false (default false) | | maxFontSize | Maximum font size | Number (default is 1000) | | !deprecated! useMaxFontSize | Use max font size if is true | Deprecated! | | minFontSize | Minimum font size | Number (default is 7) | | modelToWatch | Pass model to watch; when this model changes, font size is automatically recalculated | Any type of model |

Output Parameters:

| Parameter | Description | Values | | --------------- | ----------------- | ------ | | fontSizeChanged | Current font size | string |

Development

Want to contribute? Great! Simply, clone the repository!

I created this library because I always spent too much time solving this problem and didn't find anything on the web (as of 13/03/2017) that does this without jQuery and is easily integrable in Angular 2+. While it might not be the best implementation, it gets the job done.

Todos

• Write tests
• Find a performant algorithm to find the font size that fits the container better

License

MIT

Lorenzo I.