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remove container dependency & implement usemaxfontsize #7

Merged
nischi merged 2 commits from master into master 2017-06-19 08:21:05 +00:00
Conversation 4 Commits 2 Files changed 2 +39 -34
2 changed files with 39 additions and 34 deletions
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10
README.md
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@ -37,8 +37,8 @@ Import it in your Angular2 project like a module
@Component({
selector: 'label',
template: `<div #container>
<div [fittext]="true" [activateOnResize]="true" [container]="container">Bla bla bla...</div>
template: `<div>
<div [fittext]="true" [activateOnResize]="true" [useMaxFontSize]="false">Bla bla bla...</div>
</div>`
})
@ -52,8 +52,8 @@ Import it in your Angular2 project like a module
@Component({
selector: 'inputbox',
template: `<div #container>
<input [fittext]="true" [activateOnResize]="true" [activateOnInputEvents]="true" [container]="container">`,
template: `<div>
<input [fittext]="true" [activateOnResize]="true" [activateOnInputEvents]="true" [useMaxFontSize]="false">`,
</div>`
})
@ -65,9 +65,9 @@ Import it in your Angular2 project like a module
| Parameter | Description | Values |
| --- | --- | --- |
| fittext | is the selector of the directive | true/false
| container | the container to fit | ElementRef
| activateOnResize | enable/disable the autofit in case of window resize | true or false (default false)
| activateOnInputEvents | enbale/disable the autofit in case of input box events (keydown, keyup etc..) | true or false (default false)
| useMaxFontSize | Use font-size from element as maximum font-size | enable/disable the usage of max font-size of the lement
### Development

45
src/ng2fittext.directive.ts
View file

@ -3,12 +3,13 @@ import {Directive, ElementRef, Renderer, Input, AfterViewInit, HostListener, OnI
@Directive({
selector: '[fittext]'
})
export class Ng2FittextDirective implements AfterViewInit, OnInit {
export class FittextDirective implements AfterViewInit, OnInit {
@Input('fittext') fittext: any;
@Input('container') container: any;
@Input('activateOnResize') activateOnResize: boolean;
@Input('activateOnInputEvents') activateOnInputEvents: boolean;
@Input('useMaxFontSize') useMaxFontSize: boolean;
private maxFontSize: number = 1000;
private fontSize: number = 0;
private speed: number = 1.05;
@ -16,16 +17,20 @@ export class Ng2FittextDirective implements AfterViewInit, OnInit {
}
setFontSize(fontSize) {
console.log();
this.fontSize = fontSize;
return this.el.nativeElement.style.setProperty('font-size', (fontSize).toString()+'px');
return this.el.nativeElement.style.setProperty('font-size', (fontSize).toString() + 'px');
}
calculateFontSize(fontSize, speed){
calculateFontSize(fontSize, speed) {
// TODO Do with Gauss
return Math.floor(fontSize/speed);
return Math.floor(fontSize / speed);
}
checkOverflow(parent:any, children:any) {
checkOverflow(children: any) {
const parent = children.parentElement;
let overflowX = children.scrollWidth - parent.clientWidth;
let overflowY = children.clientHeight - parent.clientHeight;
return (overflowX > 1 || overflowY > 1);
@ -33,11 +38,11 @@ export class Ng2FittextDirective implements AfterViewInit, OnInit {
@HostListener('window:resize', ['$event'])
onResize() {
if(this.activateOnResize && this.fittext) {
if(this.activateOnInputEvents && this.fittext) {
this.setFontSize(this.container.clientHeight);
} else{
this.setFontSize(this.container.clientWidth);
if (this.activateOnResize && this.fittext) {
if (this.activateOnInputEvents && this.fittext) {
this.setFontSize(this.el.nativeElement.parentElement.clientHeight);
} else {
this.setFontSize(this.el.nativeElement.parentElement.clientWidth);
}
this.ngAfterViewInit();
}
@ -45,27 +50,27 @@ export class Ng2FittextDirective implements AfterViewInit, OnInit {
@HostListener('input', ['$event'])
onInputEvents() {
if(this.activateOnInputEvents && this.fittext) {
this.setFontSize(this.container.clientHeight);
if (this.activateOnInputEvents && this.fittext) {
this.setFontSize(this.el.nativeElement.parentElement.clientHeight);
this.ngAfterViewInit();
}
}
ngOnInit() {
if (this.useMaxFontSize) {
this.maxFontSize = parseInt(window.getComputedStyle(this.el.nativeElement).fontSize, null);
}
if (this.fittext) {
if(this.activateOnInputEvents) {
this.setFontSize(this.container.clientHeight);
} else {
this.setFontSize(this.container.clientWidth);
}
this.setFontSize(this.maxFontSize);
}
this.el.nativeElement.style.setProperty('will-change', 'content');
}
ngAfterViewInit() {
if (this.fittext) {
let overflow = this.checkOverflow(this.container, this.el.nativeElement);
if(overflow) {
let overflow = this.checkOverflow(this.el.nativeElement);
if (overflow) {
this.setFontSize(this.calculateFontSize(this.fontSize, this.speed));
this.ngAfterViewInit();
}