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class ImageComparator {
static IMG_COMP_WIDTH;
static img_A;
static img_B;
static alpha_slider;
static bar;
static direction_checkbox;
static cached_image = undefined;
static translateX = 0.0;
static translateY = 0.0;
static scale = 1.0;
static isHorizontal() {
return this.direction_checkbox.checked;
}
static switch_to_comparison() {
const tabs = gradioApp().querySelector('#tabs').querySelector('.tab-nav').querySelectorAll('button');
for (let i = 0; i < tabs.length; i++) {
if (tabs[i].textContent.trim() === "Comparison") {
tabs[i].click();
break;
}
}
}
static reset() {
if (this.isHorizontal()) {
this.img_B.parentNode.style.left = `calc(50% + ${this.IMG_COMP_WIDTH / 2}px)`;
this.img_B.style.left = `${this.IMG_COMP_WIDTH}px`;
this.bar.style.left = `calc(50% + ${this.IMG_COMP_WIDTH / 2}px)`;
this.img_B.parentNode.style.top = '0px';
this.img_B.style.top = '0px';
this.bar.style.top = '0px';
this.bar.style.height = `${this.IMG_COMP_WIDTH}px`;
this.bar.style.width = '2px';
this.img_A.classList.add('hor');
this.img_A.classList.remove('ver');
} else {
this.img_B.parentNode.style.left = `calc(50% - ${this.IMG_COMP_WIDTH / 2}px)`;
this.img_B.style.left = '0px';
this.bar.style.left = `calc(50% - ${this.IMG_COMP_WIDTH / 2}px)`;
this.img_B.parentNode.style.top = `calc(50% + ${this.IMG_COMP_WIDTH / 2}px)`;
this.img_B.style.top = `${this.IMG_COMP_WIDTH}px`;
this.bar.style.top = `${this.IMG_COMP_WIDTH}px`;
this.bar.style.width = `${this.IMG_COMP_WIDTH}px`;
this.bar.style.height = '2px';
this.img_A.classList.remove('hor');
this.img_A.classList.add('ver');
}
this.img_B.style.opacity = 1.0;
this.alpha_slider.querySelector('input').value = 1.0;
updateInput(this.alpha_slider.querySelector('input'));
}
static addButtons() {
// 0: Off ; 1: Text ; 2: Icon
const config = gradioApp().getElementById('setting_comp_send_btn').querySelectorAll('label');
var option = 0;
for (let i = 1; i < 3; i++) {
if (config[i].classList.contains('selected')) {
option = i;
break;
}
}
if (option === 0)
return;
['img2img', 'extras'].forEach((mode) => {
const row = gradioApp().getElementById(`image_buttons_${mode}`).querySelector('.form');
const btn = row.lastElementChild.cloneNode();
btn.id = `${mode}_send_to_comp`;
btn.title = "Send images to comparison tab.";
if (option === 1)
btn.textContent = "Send to Comparison";
else
btn.textContent = "🆚";
if (mode === "extras") {
btn.addEventListener('click', () => {
ImgCompLoader.loadImage("extras");
this.switch_to_comparison();
});
}
else {
const tabs = gradioApp().getElementById('img2img_settings').querySelector('.tabs').querySelector('.tab-nav');
btn.addEventListener('click', () => {
[...tabs.querySelectorAll('button')].forEach((tab) => {
if (tab.classList.contains('selected')) {
const t = tab.textContent.trim();
if (t === "img2img") {
ImgCompLoader.loadImage("i2i");
this.switch_to_comparison();
}
else if (t === "Inpaint") {
ImgCompLoader.loadImage("inpaint");
this.switch_to_comparison();
}
else {
alert("Only img2img and Inpaint are supported in Comparison!");
return;
}
}
});
});
}
row.appendChild(btn);
});
}
static addTxt2ImgButton() {
// 0: Off ; 1: Text ; 2: Icon
const config = gradioApp().getElementById('setting_comp_send_btn_t2i').querySelectorAll('label');
var option = 0;
for (let i = 1; i < 3; i++) {
if (config[i].classList.contains('selected')) {
option = i;
break;
}
}
if (option === 0)
return;
["txt2img_generate", "txt2img_upscale"].forEach((btn) => {
const generate = gradioApp().getElementById(btn);
if (generate != null)
generate.addEventListener("click", () => {
this.cached_image = gradioApp().getElementById('txt2img_gallery').querySelector('img')?.src;
});
});
const row = gradioApp().getElementById("image_buttons_txt2img").querySelector('.form');
const btn = row.lastElementChild.cloneNode();
btn.id = "txt2img_send_to_comp";
btn.title = "Send images to comparison tab.";
if (option === 1)
btn.textContent = "Send to Comparison";
else
btn.textContent = "🆚";
btn.addEventListener('click', () => {
if (this.cached_image == null) {
alert("No cached result exists!");
return;
}
ImageComparator.img_A.src = this.cached_image;
ImageComparator.img_B.src = gradioApp().getElementById('txt2img_gallery').querySelector('img').src;
ImageComparator.reset();
this.switch_to_comparison();
});
row.appendChild(btn);
}
static init() {
const block_A = gradioApp().getElementById('img_comp_A');
this.img_A = block_A.querySelector('img');
const block_B = gradioApp().getElementById('img_comp_B');
this.img_B = block_B.querySelector('img');
const tab = gradioApp().getElementById('tab_sd-webui-image-comparison');
this.IMG_COMP_WIDTH = parseFloat(getComputedStyle(tab).getPropertyValue('--img-comp-width').split('px')[0]);
const row = gradioApp().getElementById('img_comp_row');
row.setAttribute("tabindex", 0);
row.style.display = 'block';
block_A.insertBefore(this.img_A, block_A.firstChild);
while (block_A.children.length > 1)
block_A.lastChild.remove();
block_B.insertBefore(this.img_B, block_B.firstChild);
while (block_B.children.length > 1)
block_B.lastChild.remove();
block_A.classList.add('comp-block');
block_B.classList.add('comp-block');
this.img_A.ondragstart = (event) => { event.preventDefault; return false; };
this.img_B.ondragstart = (event) => { event.preventDefault; return false; };
block_B.style.pointerEvents = 'none';
block_B.style.left = `calc(50% + ${this.IMG_COMP_WIDTH / 2}px)`;
this.img_B.style.left = `${this.IMG_COMP_WIDTH}px`;
this.alpha_slider = gradioApp().getElementById('img_comp_alpha');
['mousemove', 'touchmove'].forEach((ev) => {
this.alpha_slider.addEventListener(ev, () => {
this.img_B.style.opacity = this.alpha_slider.querySelector('input').value;
});
});
this.direction_checkbox = gradioApp().getElementById('img_comp_horizontal').querySelector('input[type=checkbox]');
this.bar = row.querySelector('.bar');
this.bar = document.createElement('div');
this.bar.classList.add('bar');
row.appendChild(this.bar);
['click', 'mousemove', 'touchmove'].forEach((ev) => {
row.addEventListener(ev, (e) => {
e.preventDefault();
if (ev.startsWith('touch'))
e = e.changedTouches[0];
else if (e.buttons != 1)
return;
const rect = e.target.getBoundingClientRect();
var ratio = 0.5;
if (this.isHorizontal()) {
if (e.target.id === 'img_comp_row')
ratio = (e.clientX > (rect.left + rect.right) / 2) ? 1.0 : 0.0;
else
ratio = ((e.clientX - rect.left) / (rect.right - rect.left));
const SLIDE_VALUE = this.IMG_COMP_WIDTH * (1.0 - ratio);
this.bar.style.left = `calc(50% + ${this.IMG_COMP_WIDTH / 2}px - ${SLIDE_VALUE}px)`;
block_B.style.left = `calc(50% + ${this.IMG_COMP_WIDTH / 2}px - ${SLIDE_VALUE}px)`;
this.img_B.style.left = `calc(${-this.IMG_COMP_WIDTH}px + ${SLIDE_VALUE}px)`;
} else {
if (e.target.id === 'img_comp_row')
ratio = (e.clientX > (rect.left + rect.right) / 2) ? 1.0 : 0.0;
else
ratio = ((e.clientY - rect.top) / (rect.bottom - rect.top));
const SLIDE_VALUE = this.IMG_COMP_WIDTH * (1.0 - ratio);
this.bar.style.top = `calc(${this.IMG_COMP_WIDTH}px - ${SLIDE_VALUE}px)`;
block_B.style.top = `calc(${this.IMG_COMP_WIDTH}px - ${SLIDE_VALUE}px)`;
this.img_B.style.top = `calc(${-this.IMG_COMP_WIDTH}px + ${SLIDE_VALUE}px)`;
}
});
});
row.addEventListener("keydown", (e) => {
var flag = false;
if (e.key == "=" || e.key == "+") {
this.scale = Math.min(this.scale + 0.25, 8.0);
flag = true;
}
if (e.key == "-") {
this.scale = Math.max(this.scale - 0.25, 0.25)
flag = true;
}
if (e.key == "ArrowUp") {
this.translateY += (50 / this.scale);
flag = true;
}
if (e.key == "ArrowDown") {
this.translateY -= (50 / this.scale);
flag = true;
}
if (e.key == "ArrowRight") {
this.translateX -= (50 / this.scale);
flag = true;
}
if (e.key == "ArrowLeft") {
this.translateX += (50 / this.scale);
flag = true;
}
if (e.key == "0") {
this.translateX = 0.0;
this.translateY = 0.0;
this.scale = 1.0;
flag = true;
}
if (flag) {
e.preventDefault();
row.style.transform = `scale(${this.scale}) translate(${this.translateX}px, ${this.translateY}px)`;
return false;
}
});
ImageComparator.reset();
this.addButtons();
this.addTxt2ImgButton();
const container = document.createElement("div");
container.id = "img_comp_row_container";
row.parentNode.insertBefore(container, row);
container.appendChild(row);
}
}
onUiLoaded(async () => {
ImageComparator.init();
});
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