BetterDiscordAddons/Plugins/ImageZoom/ImageZoom.plugin.js

254 lines
12 KiB
JavaScript

//META{"name":"ImageZoom","website":"https://github.com/mwittrien/BetterDiscordAddons/tree/master/Plugins/ImageZoom","source":"https://raw.githubusercontent.com/mwittrien/BetterDiscordAddons/master/Plugins/ImageZoom/ImageZoom.plugin.js"}*//
class ImageZoom {
getName () {return "ImageZoom";}
getVersion () {return "1.0.1";}
getAuthor () {return "DevilBro";}
getDescription () {return "Allows you to zoom in opened Images by holding left clicking on them in the Image Modal.";}
initConstructor () {
this.patchModules = {
"ImageModal":["componentDidMount","componentWillUnmount"]
}
this.zoomSettingsContextMarkup =
`<div class="${BDFDB.disCN.contextmenu} imagezoom-contextmenu">
<div class="${BDFDB.disCN.contextmenuitemgroup}">
<div class="${BDFDB.disCN.contextmenuitem} zoomlevel-item ${BDFDB.disCN.contextmenuitemslider}">
<div class="${BDFDB.disCN.contextmenulabel}"></div>
<div class="${BDFDB.disCNS.contextmenuslider + BDFDB.disCNS.slider + BDFDB.disCN.slidermini}" type="zoomlevel">
<input type="number" class="${BDFDB.disCN.sliderinput}" readonly="" value="">
<div class="${BDFDB.disCN.slidertrack}"></div>
<div class="${BDFDB.disCN.sliderbar}">
<div class="${BDFDB.disCN.sliderbarfill}"></div>
</div>
<div class="${BDFDB.disCN.slidertrack}">
<div class="${BDFDB.disCN.slidergrabber}"></div>
</div>
</div>
</div>
<div class="${BDFDB.disCN.contextmenuitem} lensesize-item ${BDFDB.disCN.contextmenuitemslider}">
<div class="${BDFDB.disCN.contextmenulabel}"></div>
<div class="${BDFDB.disCNS.contextmenuslider + BDFDB.disCNS.slider + BDFDB.disCN.slidermini}" type="lensesize">
<input type="number" class="${BDFDB.disCN.sliderinput}" readonly="" value="">
<div class="${BDFDB.disCN.slidertrack}"></div>
<div class="${BDFDB.disCN.sliderbar}">
<div class="${BDFDB.disCN.sliderbarfill}"></div>
</div>
<div class="${BDFDB.disCN.slidertrack}">
<div class="${BDFDB.disCN.slidergrabber}"></div>
</div>
</div>
</div>
</div>
</div>`;
this.css = `
.imagezoom-lense {
pointer-events: none !important;
z-index: 10000 !important;
position: absolute !important;
border-radius: 50% !important;
border: 2px solid rgb(114, 137, 218);
}
.imagezoom-backdrop {
position: absolute !important;
top: 0 !important;
right: 0 !important;
bottom: 0 !important;
left: 0 !important;
z-index: 8000 !important;
}`;
this.defaults = {
settings: {
zoomlevel: {value:2, digits:1, min:1, max:10, unit:"x", name:"Zoom Level"},
lensesize: {value:200, digits:0, min:50, max:1000, unit:"px", name:"Lense Size"}
}
};
}
//legacy
load () {}
start () {
if (!global.BDFDB) global.BDFDB = {myPlugins:{}};
if (global.BDFDB && global.BDFDB.myPlugins && typeof global.BDFDB.myPlugins == "object") global.BDFDB.myPlugins[this.getName()] = this;
var libraryScript = document.querySelector('head script[src="https://mwittrien.github.io/BetterDiscordAddons/Plugins/BDFDB.js"]');
if (!libraryScript || performance.now() - libraryScript.getAttribute("date") > 600000) {
if (libraryScript) libraryScript.remove();
libraryScript = document.createElement("script");
libraryScript.setAttribute("type", "text/javascript");
libraryScript.setAttribute("src", "https://mwittrien.github.io/BetterDiscordAddons/Plugins/BDFDB.js");
libraryScript.setAttribute("date", performance.now());
libraryScript.addEventListener("load", () => {if (global.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) this.initialize();});
document.head.appendChild(libraryScript);
}
else if (global.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) this.initialize();
this.startTimeout = setTimeout(() => {this.initialize();}, 30000);
}
initialize () {
if (global.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) {
if (this.started) return;
BDFDB.loadMessage(this);
BDFDB.WebModules.forceAllUpdates(this);
}
else {
console.error(`%c[${this.getName()}]%c`, 'color: #3a71c1; font-weight: 700;', '', 'Fatal Error: Could not load BD functions!');
}
}
stop () {
if (global.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) {
for (let img of document.querySelectorAll(BDFDB.dotCNS.imagewrapper + "img")) if (img.ImageZoomMouseDownListener) {
img.removeEventListener("mousedown", img.ImageZoomMouseDownListener);
delete img.ImageZoomMouseDownListener;
img.removeAttribute("draggable");
}
BDFDB.removeEles(".imagezoom-contextmenu", ".imagezoom-separator", ".imagezoom-settings", ".imagezoom-lense", ".imagezoom-backdrop");
BDFDB.unloadMessage(this);
}
}
// begin of own functions
processImageModal (instance, wrapper, methodnames) {
if (methodnames.includes("componentDidMount")) {
let modal = BDFDB.getParentEle(BDFDB.dotCN.modal, wrapper);
if (!modal) return;
let inner = modal.querySelector(BDFDB.dotCN.modalinner);
if (!inner) return;
let start = performance.now();
let waitForImg = setInterval(() => {
let img = modal.querySelector(BDFDB.dotCNS.imagewrapper + "img," + BDFDB.dotCNS.imagewrapper + "video");
if (img && img.src) {
clearInterval(waitForImg);
img.setAttribute("draggable", "false");
inner.firstElementChild.appendChild(BDFDB.htmlToElement(`<span class="${BDFDB.disCN.downloadlink} imagezoom-separator" style="margin: 0px 5px;"> | </div>`));
let settingslink = BDFDB.htmlToElement(`<span class="${BDFDB.disCN.downloadlink} imagezoom-settings">Zoom ${BDFDB.LanguageStrings.SETTINGS}</div>`);
inner.firstElementChild.appendChild(settingslink);
let openContext = e => {
let settings = BDFDB.getAllData(this, "settings");
let zoomSettingsContext = BDFDB.htmlToElement(this.zoomSettingsContextMarkup);
for (let slideritem of zoomSettingsContext.querySelectorAll(BDFDB.dotCN.contextmenuitemslider)) {
let slider = slideritem.querySelector(BDFDB.dotCN.contextmenuslider);
let type = slider.getAttribute("type");
let value = settings[type];
let percent = BDFDB.mapRange([this.defaults.settings[type].min, this.defaults.settings[type].max], [0, 100], value);
let grabber = slider.querySelector(BDFDB.dotCN.slidergrabber);
grabber.style.setProperty("left", percent + "%");
grabber.addEventListener("mousedown", e => {this.dragSlider(slider, value, e);});
slider.querySelector(BDFDB.dotCN.sliderbarfill).style.setProperty("width", percent + "%");
slider.querySelector(BDFDB.dotCN.sliderinput).value = value;
slider.previousSibling.innerText = this.defaults.settings[type].name + ": " + value + this.defaults.settings[type].unit;
}
let zoomlevelitem = zoomSettingsContext.querySelector(".zoomlevel-item");
let lensesizeitem = zoomSettingsContext.querySelector(".lensesize-item");
BDFDB.appendContextMenu(zoomSettingsContext, e);
};
settingslink.addEventListener("click", openContext);
settingslink.addEventListener("contextmenu", openContext);
img.ImageZoomMouseDownListener = e => {
BDFDB.stopEvent(e);
BDFDB.appendLocalStyle("ImageZoomCrossHair", "* {cursor: crosshair !important;}");
let imgrects = BDFDB.getRects(img);
let settings = BDFDB.getAllData(this, "settings");
let lense = BDFDB.htmlToElement(`<div class="imagezoom-lense" style="overflow: hidden !important; width: ${settings.lensesize}px !important; height: ${settings.lensesize}px !important;"><${img.tagName} class="imagezoom-pane" src="${img.src}" style="width: ${imgrects.width * settings.zoomlevel}px; height: ${imgrects.height * settings.zoomlevel}px; position:fixed !important;"${img.tagName == "VIDEO" ? " loop autoplay" : ""}></${img.tagName}></div>`);
let pane = lense.firstElementChild;
let backdrop = BDFDB.htmlToElement(`<div class="imagezoom-backdrop" style="background: rgba(0,0,0,0.2) !important;"></div>`);
document.querySelector(BDFDB.dotCN.appmount).appendChild(lense);
document.querySelector(BDFDB.dotCN.appmount).appendChild(backdrop);
let lenserects = BDFDB.getRects(lense), panerects = BDFDB.getRects(pane);
let halfW = lenserects.width / 2, halfH = lenserects.height / 2;
let minX = imgrects.left, maxX = minX + imgrects.width;
let minY = imgrects.top, maxY = minY + imgrects.height;
lense.style.setProperty("left", e.clientX - halfW + "px", "important");
lense.style.setProperty("top", e.clientY - halfH + "px", "important");
pane.style.setProperty("left", imgrects.left + ((settings.zoomlevel - 1) * (imgrects.left - e.clientX)) + "px", "important");
pane.style.setProperty("top", imgrects.top + ((settings.zoomlevel - 1) * (imgrects.top - e.clientY)) + "px", "important");
let dragging = e2 => {
let x = e2.clientX > maxX ? maxX - halfW : e2.clientX < minX ? minX - halfW : e2.clientX - halfW;
let y = e2.clientY > maxY ? maxY - halfH : e2.clientY < minY ? minY - halfH : e2.clientY - halfH;
lense.style.setProperty("left", x + "px", "important");
lense.style.setProperty("top", y + "px", "important");
pane.style.setProperty("left", imgrects.left + ((settings.zoomlevel - 1) * (imgrects.left - x - halfW)) + "px", "important");
pane.style.setProperty("top", imgrects.top + ((settings.zoomlevel - 1) * (imgrects.top - y - halfH)) + "px", "important");
};
let releasing = e2 => {
BDFDB.removeLocalStyle('ImageZoomCrossHair');
document.removeEventListener("mousemove", dragging);
document.removeEventListener("mouseup", releasing);
BDFDB.removeEles(lense, backdrop);
};
document.addEventListener("mousemove", dragging);
document.addEventListener("mouseup", releasing);
};
img.addEventListener("mousedown", img.ImageZoomMouseDownListener);
}
else if (performance.now() - start > 10000) {
clearInterval(waitForImg);
}
}, 100);
}
else if (methodnames.includes("componentWillUnmount")) {
BDFDB.removeEles(".imagezoom-contextmenu", ".imagezoom-separator", ".imagezoom-settings", ".imagezoom-lense", ".imagezoom-backdrop");
}
}
dragSlider (slider, value, e) {
var grabber = e.currentTarget;
var track = grabber.parentNode;
var slider = track.parentNode;
var input = slider.querySelector(BDFDB.dotCN.sliderinput);
var barfill = slider.querySelector(BDFDB.dotCN.sliderbarfill);
var type = slider.getAttribute("type");
BDFDB.appendLocalStyle("disableTextSelection", `*{user-select: none !important;}`);
var sY = 0;
var sHalfW = BDFDB.getRects(grabber).width/2;
var sMinX = BDFDB.getRects(track).left;
var sMaxX = sMinX + BDFDB.getRects(track).width;
var bubble = BDFDB.htmlToElement(`<span class="${BDFDB.disCN.sliderbubble}">${value + this.defaults.settings[type].unit}</span>`);
grabber.appendChild(bubble);
var mouseup = () => {
document.removeEventListener("mouseup", mouseup);
document.removeEventListener("mousemove", mousemove);
BDFDB.removeEles(bubble);
BDFDB.removeLocalStyle("disableTextSelection");
BDFDB.saveData(type, value, this, "settings");
slider.previousSibling.innerText = this.defaults.settings[type].name + ": " + value + this.defaults.settings[type].unit;
};
var mousemove = e2 => {
sY = e2.clientX > sMaxX ? sMaxX - sHalfW : (e2.clientX < sMinX ? sMinX - sHalfW : e2.clientX - sHalfW);
value = parseInt(BDFDB.mapRange([sMinX - sHalfW, sMaxX - sHalfW], [this.defaults.settings[type].min, this.defaults.settings[type].max], sY)*Math.pow(10, this.defaults.settings[type].digits))/Math.pow(10, this.defaults.settings[type].digits);
let percent = BDFDB.mapRange([sMinX - sHalfW, sMaxX - sHalfW], [0, 100], sY);
grabber.style.setProperty("left", percent + "%");
barfill.style.setProperty("width", percent + "%");
input.value = value;
bubble.innerText = value + this.defaults.settings[type].unit;
};
document.addEventListener("mouseup", mouseup);
document.addEventListener("mousemove", mousemove);
}
updateSlider () {
var sY = 0;
var sHalfW = BDFDB.getRects(grabber).width/2;
var sMinX = BDFDB.getRects(track).left;
var sMaxX = sMinX + BDFDB.getRects(track).width;
}
}