import { CardLoader, DOMFlip } from '../flippable.js' import { Capabilities } from '../capabilities.js' import { DeepZoomImage } from './deepzoom/image.js' let globalScatterLoaderCanvas = null export class ScatterLoader extends CardLoader { get scatter() { return this.src } unscaledSize() { let displayObject = this.scatter.displayObject let w = displayObject.width let h = displayObject.height return [w / displayObject.scale.x, h / displayObject.scale.y] } scaledSize() { let displayObject = this.scatter.displayObject let w = displayObject.width let h = displayObject.height return [w, h] } cloneScatterImage() { let w = this.scatter.width let h = this.scatter.height let isSprite = this.scatter.displayObject instanceof PIXI.Sprite let isDeepZoom = this.scatter.displayObject instanceof DeepZoomImage let resolution = app.renderer.resolution if (isSprite) { w = this.scatter.displayObject.texture.width h = this.scatter.displayObject.texture.height } else if (isDeepZoom) { let [ww, hh] = this.scatter.displayObject.baseSize w = ww h = hh } if (globalScatterLoaderCanvas === null) { globalScatterLoaderCanvas = document.createElement('canvas') } let canvas = globalScatterLoaderCanvas canvas.width = w canvas.height = h let renderer = new PIXI.Renderer({ width: w, height: h, view: canvas, resolution: resolution, }) let displayObject = this.scatter.displayObject let x = displayObject.x let y = displayObject.y let rot = displayObject.rotation let sx = displayObject.scale.x let sy = displayObject.scale.y displayObject.rotation = 0 // The Safari WebGLRenderer wants everything flipped // See https://github.com/pixijs/pixi.js/issues/2283 displayObject.x = 0 if (Capabilities.isSafari) { displayObject.y = h displayObject.scale.set(1, -1) // sx, -sy) } else { displayObject.y = 0 displayObject.scale.set(1, 1) } if (isSprite) { displayObject.width = w displayObject.height = h } renderer.render(displayObject) displayObject.rotation = rot displayObject.x = x displayObject.y = y displayObject.scale.set(sx, sy) let url = canvas.toDataURL() return [x, y, w, h, url] } load(domNode) { return new Promise((resolve, reject) => { let isImage = domNode instanceof HTMLImageElement let isSprite = this.scatter.displayObject instanceof PIXI.Sprite let image = isImage ? domNode : document.createElement('img') let [x, y, w, h, cloneURL] = this.cloneScatterImage() let [ww, hh] = this.unscaledSize() image.onload = (e) => { if (!isImage) domNode.appendChild(image) this.x = x this.y = y this.wantedWidth = ww this.wantedHeight = hh this.scale = 1 this.rotation = this.scatter.rotation resolve(this) } image.onerror = (e) => { reject(this) } image.src = cloneURL }) } } export default class FlipEffect { constructor(scatter, domScatterContainer, flipTemplate, backLoader) { this.flipped = false this.scatter = scatter this.backLoader = backLoader this.scatterLoader = new ScatterLoader(scatter) this.domFlip = new DOMFlip(domScatterContainer, flipTemplate, this.scatterLoader, backLoader, { onBack: this.backCardClosed.bind(this), }) this.setupInfoButton() } startFlip() { let center = this.flipCenter() let loader = this.backLoader this.domFlip.load().then((domFlip) => { this.scatter.displayObject.visible = false domFlip.centerAt(center) domFlip.zoom(this.scatter.scale) let target = this.constraintFlipCenter(center, loader) domFlip.start({ targetCenter: target }) }) } unscaledSize() { return this.scatterLoader.unscaledSize() } flipCenter() { let isSprite = this.scatter.displayObject instanceof PIXI.Sprite let resolution = isSprite ? app.renderer.resolution : 1 let center = this.scatter.center let canvas = app.renderer.view let domNode = this.domFlip.domScatterContainer.element let page = window.convertPointFromNodeToPage(canvas, center.x * resolution, center.y * resolution) let local = window.convertPointFromPageToNode(domNode, page.x, page.y) return local } constraintFlipCenter(center, loader) { let w = loader.wantedWidth let h = loader.wantedHeight let canvas = app.renderer.view let x = center.x let y = center.y if (x < w / 2) x = w / 2 if (y < h / 2) y = h / 2 if (x > canvas.width) x = canvas.width - w / 2 if (y > canvas.height) y = canvas.height - h / 2 return { x, y } } setupInfoButton() { let iscale = 1.0 / this.scatter.scale this.infoBtn = new PIXI.Graphics() this.infoBtn.beginFill(0x333333) this.infoBtn.lineStyle(4, 0xffffff) this.infoBtn.drawCircle(0, 0, 22) this.infoBtn.endFill() this.infoBtn.beginFill(0xffffff) this.infoBtn.lineStyle(0) this.infoBtn.drawCircle(0, -8, 4) this.infoBtn.endFill() this.infoBtn.lineStyle(6, 0xffffff) this.infoBtn.moveTo(0, -2) this.infoBtn.lineTo(0, 14) this.infoBtn.endFill() this.infoBtn.on('click', (e) => { this.infoSelected() }) this.infoBtn.on('tap', (e) => { this.infoSelected() }) this.infoBtn.interactive = true this.infoBtn.width = 44 this.infoBtn.height = 44 this.infoBtn.pivot.x = 30 this.infoBtn.pivot.y = 30 let displayObject = this.scatter.displayObject let [w, h] = this.unscaledSize() this.infoBtn.position = new PIXI.Point(w, h) if (displayObject.foreground) { this.infoBtn.scale.x = iscale this.infoBtn.scale.y = iscale displayObject.foreground.addChild(this.infoBtn) } else { displayObject.addChild(this.infoBtn) } this.scatter.addTransformEventCallback((e) => { let displayObject = this.scatter.displayObject if (displayObject.foreground) { if (e.scale) { let iscale = 1.0 / e.scale this.infoBtn.scale.x = iscale this.infoBtn.scale.y = iscale } } }) } setupButton(url) { let svgImage = new Image() let canvas = document.createElement('canvas') canvas.width = 88 * 4 canvas.height = 44 * 4 svgImage.onload = (e) => { let displayObject = this.scatter.displayObject canvas.getContext('2d').drawImage(svgImage, 0, 0, canvas.width, canvas.height) let texure = new PIXI.Texture(new PIXI.BaseTexture(canvas)) this.infoBtn = new PIXI.Sprite(texure) this.infoBtn.anchor.set(0.5, 0.5) if (displayObject.foreground) { displayObject.foreground.addChild(this.infoBtn) } else { displayObject.addChild(this.infoBtn) } this.infoBtn.scale.set(0.5, 0.5) let [w, h] = this.unscaledSize() this.infoBtn.position = new PIXI.Point(w, h) this.infoBtn.interactive = true this.infoBtn.updateTransform() this.infoBtn.on('click', (e) => { this.infoSelected() }) this.infoBtn.on('tap', (e) => { this.infoSelected() }) } svgImage.src = url } infoSelected() { this.startFlip() } backSelected() { this.domFlip.start() } backCardClosed() { /*** The flip effect should now be in it's initial state again. All memory should be freed. ***/ let displayObject = this.scatter.displayObject displayObject.visible = true this.domFlip.fadeOutAndRemove() this.flipped = false } targetRotation(alpha) { let ortho = 90 let rest = alpha % ortho let delta = 0.0 if (rest > ortho / 2.0) { delta = ortho - rest } else { delta = -rest } return delta } }