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An Angular2+ directive that autoscale the font size of an element until it fit the upper level container dimension.
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thisloke/ng2-fittext
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An Angular 2+ directive, written in pure TypeScript (without jQuery!), to automatically scale the font size of an element so that it fits within its parent container.
Check out the live demo:ng2-fittext Demo
Install the library using npm according to your angular version (see table below):
Angular | ng2-fittext | command |
---|---|---|
<= v17 | 1.4.3 | npm i ng2-fittext@1.4.3 |
>= v18 | 2.0.0 | npm i ng2-fittext@2.0.0 |
- Import the module in your Angular application:
import{Ng2FittextModule}from"ng2-fittext";@NgModule({imports:[Ng2FittextModule]})
- 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> `})exportclassLabelComponent{}
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> `})exportclassLabelComponent{}
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> `})exportclassInputBoxComponent{}
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> `})exportclassInputBoxComponent{}
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 |
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.
- Write tests
- Find a performant algorithm to find the font size that fits the container better
MIT
Lorenzo I.
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An Angular2+ directive that autoscale the font size of an element until it fit the upper level container dimension.
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