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pigallery2/frontend/app/gallery/lightbox/lightbox.gallery.component.ts

258 lines
8.4 KiB
TypeScript

///<reference path="../../../browser.d.ts"/>
import {Component, ElementRef, ViewChild, QueryList} from "@angular/core";
import {Photo} from "../../../../common/entities/Photo";
import {GalleryPhotoComponent} from "../grid/photo/photo.grid.gallery.component.ts";
import {AnimationBuilder} from "@angular/platform-browser/src/animate/animation_builder";
import {BrowserDomAdapter} from "@angular/platform-browser/src/browser_common";
import {Dimension} from "../../model/IRenderable";
import {GalleryLightboxPhotoComponent} from "./photo/photo.lightbox.gallery.component";
@Component({
selector: 'gallery-lightbox',
styleUrls: ['app/gallery/lightbox/lightbox.gallery.component.css'],
templateUrl: 'app/gallery/lightbox/lightbox.gallery.component.html',
directives: [GalleryLightboxPhotoComponent]
})
export class GalleryLightboxComponent {
@ViewChild('lightbox') lightBoxDiv:ElementRef;
@ViewChild('blackCanvas') blackCanvasDiv:ElementRef;
@ViewChild('controls') controlsDiv:ElementRef;
@ViewChild('imgContainer') imgContainer:GalleryLightboxPhotoComponent;
public imageSize = {width: "auto", height: "100"};
public navigation = {hasPrev: true, hasNext: true};
private activePhoto:GalleryPhotoComponent;
public gridPhotoQL:QueryList<GalleryPhotoComponent>;
private dom:BrowserDomAdapter;
constructor(private animBuilder:AnimationBuilder) {
this.dom = new BrowserDomAdapter();
}
public nextImage() {
let pcList = this.gridPhotoQL.toArray();
for (let i = 0; i < pcList.length; i++) {
if (pcList[i] === this.activePhoto && i + 1 < pcList.length) {
this.activePhoto = pcList[i + 1];
this.navigation.hasPrev = true;
if (i + 2 < pcList.length) {
this.navigation.hasNext = true;
} else {
this.navigation.hasNext = false;
}
let toImage = this.calcLightBoxPhotoDimension(this.activePhoto.gridPhoto.photo).toStyle();
this.forceAnimateFrom(toImage,
{},
this.imgContainer.nativeElement.nativeElement);
this.setImageSize();
return;
}
}
}
public prevImage() {
let pcList = this.gridPhotoQL.toArray();
for (let i = 0; i < pcList.length; i++) {
if (pcList[i] === this.activePhoto && i > 0) {
this.activePhoto = pcList[i - 1];
this.navigation.hasNext = true;
if (i - 1 > 0) {
this.navigation.hasPrev = true;
} else {
this.navigation.hasPrev = false;
}
let toImage = this.calcLightBoxPhotoDimension(this.activePhoto.gridPhoto.photo).toStyle();
this.forceAnimateFrom(toImage,
{},
this.imgContainer.nativeElement.nativeElement);
this.setImageSize();
return;
}
}
}
private setImageSize() {
if (this.activePhoto.gridPhoto.photo.metadata.size.height > this.activePhoto.gridPhoto.photo.metadata.size.width) {
this.imageSize.height = "100";
this.imageSize.width = null;
} else {
this.imageSize.height = null;
this.imageSize.width = "100";
}
}
public show(photo:Photo) {
let selectedPhoto = this.findPhotoComponent(photo);
if (selectedPhoto === null) {
throw new Error("Can't find Photo");
}
this.dom.setStyle(this.dom.query('body'), 'overflow', 'hidden');
this.activePhoto = selectedPhoto;
this.setImageSize();
let from = this.activePhoto.getDimension();
from.top -= this.getBodyScrollTop();
let fromImage = {width: from.width + "px", height: from.height + "px", top: "0px", left: "0px"};
let toImage = this.calcLightBoxPhotoDimension(this.activePhoto.gridPhoto.photo).toStyle();
this.forceAnimateFrom(fromImage,
toImage,
this.imgContainer.nativeElement.nativeElement);
this.forceAnimateFrom(from.toStyle(),
{height: "100%", width: "100%", "top": "0px", "left": "0px"},
this.lightBoxDiv.nativeElement);
this.forceAnimateFrom({opacity: "0", display: "block"},
{opacity: "1"},
this.blackCanvasDiv.nativeElement);
this.forceAnimateFrom({opacity: "0", display: "block"},
{opacity: "1"},
this.controlsDiv.nativeElement);
}
public hide() {
console.log("hiding");
let to = this.activePhoto.getDimension();
//iff target image out of screen -> scroll to there
if (this.getBodyScrollTop() > to.top || this.getBodyScrollTop() + this.getScreenHeight() < to.top) {
this.setBodyScrollTop(to.top);
}
to.top -= this.getBodyScrollTop();
this.forceAnimateTo({height: "100%", width: "100%", "top": "0px", "left": "0px"},
to.toStyle(),
this.lightBoxDiv.nativeElement,
{height: "0px", width: "0px", "top": "0px", "left": "0px"},
()=> {
this.activePhoto = null;
});
this.dom.setStyle(this.dom.query('body'), 'overflow', 'auto');
this.forceAnimateTo({opacity: "1.0", display: "block"},
{opacity: "0.0", display: "block"},
this.blackCanvasDiv.nativeElement,
{display: "none"});
this.forceAnimateTo({opacity: "1.0", display: "block"},
{opacity: "0.0", display: "block"},
this.controlsDiv.nativeElement,
{display: "none"});
let fromImage = this.calcLightBoxPhotoDimension(this.activePhoto.gridPhoto.photo).toStyle();
let toImage = {width: to.width + "px", height: to.height + "px", top: "0px", left: "0px"};
this.forceAnimateTo(fromImage,
toImage,
this.imgContainer.nativeElement.nativeElement);
}
private findPhotoComponent(photo) {
let galleryPhotoComponents = this.gridPhotoQL.toArray();
let selectedPhoto:GalleryPhotoComponent = null;
for (let i = 0; i < galleryPhotoComponents.length; i++) {
if (galleryPhotoComponents[i].gridPhoto.photo == photo) {
selectedPhoto = galleryPhotoComponents[i];
break;
}
}
return selectedPhoto;
}
private forceAnimateFrom(from, to, elemnet) {
let anim0 = this.animBuilder.css();
anim0.setDuration(0);
anim0.setToStyles(from);
anim0.start(elemnet).onComplete(()=> {
let anim1 = this.animBuilder.css();
anim1.setDuration(500);
anim1.setFromStyles(from);
anim1.setToStyles(to);
anim1.start(elemnet);
});
}
private forceAnimateTo(from, to, elemnet, innerTo = null, onComplete = ()=> {
}) {
if (innerTo == null) {
innerTo = to;
}
let anim0 = this.animBuilder.css();
anim0.setDuration(500);
anim0.setFromStyles(from);
anim0.setToStyles(to);
anim0.start(elemnet).onComplete(()=> {
let anim1 = this.animBuilder.css();
anim1.setDuration(0);
anim1.setToStyles(innerTo);
anim1.start(elemnet).onComplete(onComplete);
});
}
private getBodyScrollTop() {
return this.dom.getProperty(this.dom.query('body'), 'scrollTop');
}
private setBodyScrollTop(value) {
return this.dom.setProperty(this.dom.query('body'), 'scrollTop', value);
}
private getScreenWidth() {
return window.innerWidth;
}
private getScreenHeight() {
return window.innerHeight;
}
private calcLightBoxPhotoDimension(photo:Photo):Dimension {
let width = 0;
let height = 0;
if (photo.metadata.size.height > photo.metadata.size.width) {
width = Math.round(photo.metadata.size.width * (this.getScreenHeight() / photo.metadata.size.height));
height = this.getScreenHeight();
} else {
width = this.getScreenWidth();
height = Math.round(photo.metadata.size.height * (this.getScreenWidth() / photo.metadata.size.width));
}
let top = (this.getScreenHeight() / 2 - height / 2);
let left = (this.getScreenWidth() / 2 - width / 2);
return new Dimension(top, left, width, height);
}
}