stable-diffusion-webui/javascript/imageviewer.js
2023-03-25 14:52:47 -04:00

260 lines
8.3 KiB
JavaScript

// A full size 'lightbox' preview modal shown when left clicking on gallery previews
function closeModal() {
gradioApp().getElementById("lightboxModal").style.display = "none";
}
function showModal(event) {
const source = event.target || event.srcElement;
const modalImage = gradioApp().getElementById("modalImage")
const lb = gradioApp().getElementById("lightboxModal")
modalImage.src = source.src
if (modalImage.style.display === 'none') {
lb.style.setProperty('background-image', 'url(' + source.src + ')');
}
lb.style.display = "flex";
lb.focus()
const tabTxt2Img = gradioApp().getElementById("tab_txt2img")
const tabImg2Img = gradioApp().getElementById("tab_img2img")
// show the save button in modal only on txt2img or img2img tabs
if (tabTxt2Img.style.display != "none" || tabImg2Img.style.display != "none") {
gradioApp().getElementById("modal_save").style.display = "inline"
} else {
gradioApp().getElementById("modal_save").style.display = "none"
}
event.stopPropagation()
}
function negmod(n, m) {
return ((n % m) + m) % m;
}
function updateOnBackgroundChange() {
const modalImage = gradioApp().getElementById("modalImage")
if (modalImage && modalImage.offsetParent) {
let currentButton = selected_gallery_button();
if (currentButton?.children?.length > 0 && modalImage.src != currentButton.children[0].src) {
modalImage.src = currentButton.children[0].src;
if (modalImage.style.display === 'none') {
modal.style.setProperty('background-image', `url(${modalImage.src})`)
}
}
}
}
function modalImageSwitch(offset) {
var galleryButtons = all_gallery_buttons();
if (galleryButtons.length > 1) {
var currentButton = selected_gallery_button();
var result = -1
galleryButtons.forEach(function(v, i) {
if (v == currentButton) {
result = i
}
})
if (result != -1) {
nextButton = galleryButtons[negmod((result + offset), galleryButtons.length)]
nextButton.click()
const modalImage = gradioApp().getElementById("modalImage");
const modal = gradioApp().getElementById("lightboxModal");
modalImage.src = nextButton.children[0].src;
if (modalImage.style.display === 'none') {
modal.style.setProperty('background-image', `url(${modalImage.src})`)
}
setTimeout(function() {
modal.focus()
}, 10)
}
}
}
function saveImage(){
const tabTxt2Img = gradioApp().getElementById("tab_txt2img")
const tabImg2Img = gradioApp().getElementById("tab_img2img")
const saveTxt2Img = "save_txt2img"
const saveImg2Img = "save_img2img"
if (tabTxt2Img.style.display != "none") {
gradioApp().getElementById(saveTxt2Img).click()
} else if (tabImg2Img.style.display != "none") {
gradioApp().getElementById(saveImg2Img).click()
} else {
console.error("missing implementation for saving modal of this type")
}
}
function modalSaveImage(event) {
saveImage()
event.stopPropagation()
}
function modalNextImage(event) {
modalImageSwitch(1)
event.stopPropagation()
}
function modalPrevImage(event) {
modalImageSwitch(-1)
event.stopPropagation()
}
function modalKeyHandler(event) {
switch (event.key) {
case "s":
saveImage()
break;
case "ArrowLeft":
modalPrevImage(event)
break;
case "ArrowRight":
modalNextImage(event)
break;
case "Escape":
closeModal();
break;
}
}
function setupImageForLightbox(e) {
if (e.dataset.modded)
return;
e.dataset.modded = true;
e.style.cursor='pointer'
e.style.userSelect='none'
var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') > -1
// For Firefox, listening on click first switched to next image then shows the lightbox.
// If you know how to fix this without switching to mousedown event, please.
// For other browsers the event is click to make it possiblr to drag picture.
var event = isFirefox ? 'mousedown' : 'click'
e.addEventListener(event, function (evt) {
if(!opts.js_modal_lightbox || evt.button != 0) return;
modalZoomSet(gradioApp().getElementById('modalImage'), opts.js_modal_lightbox_initially_zoomed)
evt.preventDefault()
showModal(evt)
}, true);
}
function modalZoomSet(modalImage, enable) {
if (enable) {
modalImage.classList.add('modalImageFullscreen');
} else {
modalImage.classList.remove('modalImageFullscreen');
}
}
function modalZoomToggle(event) {
modalImage = gradioApp().getElementById("modalImage");
modalZoomSet(modalImage, !modalImage.classList.contains('modalImageFullscreen'))
event.stopPropagation()
}
function modalTileImageToggle(event) {
const modalImage = gradioApp().getElementById("modalImage");
const modal = gradioApp().getElementById("lightboxModal");
const isTiling = modalImage.style.display === 'none';
if (isTiling) {
modalImage.style.display = 'block';
modal.style.setProperty('background-image', 'none')
} else {
modalImage.style.display = 'none';
modal.style.setProperty('background-image', `url(${modalImage.src})`)
}
event.stopPropagation()
}
function galleryImageHandler(e) {
//if (e && e.parentElement.tagName == 'BUTTON') {
e.onclick = showGalleryImage;
//}
}
onUiUpdate(function() {
fullImg_preview = gradioApp().querySelectorAll('.gradio-gallery > div > img')
if (fullImg_preview != null) {
fullImg_preview.forEach(setupImageForLightbox);
}
updateOnBackgroundChange();
})
document.addEventListener("DOMContentLoaded", function() {
//const modalFragment = document.createDocumentFragment();
const modal = document.createElement('div')
modal.onclick = closeModal;
modal.id = "lightboxModal";
modal.tabIndex = 0
modal.addEventListener('keydown', modalKeyHandler, true)
const modalControls = document.createElement('div')
modalControls.className = 'modalControls gradio-container';
modal.append(modalControls);
const modalZoom = document.createElement('span')
modalZoom.className = 'modalZoom cursor';
modalZoom.innerHTML = '⤡'
modalZoom.addEventListener('click', modalZoomToggle, true)
modalZoom.title = "Toggle zoomed view";
modalControls.appendChild(modalZoom)
const modalTileImage = document.createElement('span')
modalTileImage.className = 'modalTileImage cursor';
modalTileImage.innerHTML = '⊞'
modalTileImage.addEventListener('click', modalTileImageToggle, true)
modalTileImage.title = "Preview tiling";
modalControls.appendChild(modalTileImage)
const modalSave = document.createElement("span")
modalSave.className = "modalSave cursor"
modalSave.id = "modal_save"
modalSave.innerHTML = "🖫"
modalSave.addEventListener("click", modalSaveImage, true)
modalSave.title = "Save Image(s)"
modalControls.appendChild(modalSave)
const modalClose = document.createElement('span')
modalClose.className = 'modalClose cursor';
modalClose.innerHTML = '×'
modalClose.onclick = closeModal;
modalClose.title = "Close image viewer";
modalControls.appendChild(modalClose)
const modalImage = document.createElement('img')
modalImage.id = 'modalImage';
modalImage.onclick = closeModal;
modalImage.tabIndex = 0
modalImage.addEventListener('keydown', modalKeyHandler, true)
modal.appendChild(modalImage)
const modalPrev = document.createElement('a')
modalPrev.className = 'modalPrev';
modalPrev.innerHTML = '❮'
modalPrev.tabIndex = 0
modalPrev.addEventListener('click', modalPrevImage, true);
modalPrev.addEventListener('keydown', modalKeyHandler, true)
modal.appendChild(modalPrev)
const modalNext = document.createElement('a')
modalNext.className = 'modalNext';
modalNext.innerHTML = '❯'
modalNext.tabIndex = 0
modalNext.addEventListener('click', modalNextImage, true);
modalNext.addEventListener('keydown', modalKeyHandler, true)
modal.appendChild(modalNext)
gradioApp().appendChild(modal)
document.body.appendChild(modal);
});