259 lines
8.4 KiB
JavaScript
259 lines
8.4 KiB
JavaScript
// A full size 'lightbox' preview modal shown when left clicking on gallery previews
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function closeModal() {
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gradioApp().getElementById("lightboxModal").style.display = "none";
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}
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function showModal(event) {
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const source = event.target || event.srcElement;
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const modalImage = gradioApp().getElementById("modalImage");
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const lb = gradioApp().getElementById("lightboxModal");
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modalImage.src = source.src;
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if (modalImage.style.display === 'none') {
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lb.style.setProperty('background-image', 'url(' + source.src + ')');
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}
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lb.style.display = "flex";
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lb.focus();
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const tabTxt2Img = gradioApp().getElementById("tab_txt2img");
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const tabImg2Img = gradioApp().getElementById("tab_img2img");
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// show the save button in modal only on txt2img or img2img tabs
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if (tabTxt2Img.style.display != "none" || tabImg2Img.style.display != "none") {
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gradioApp().getElementById("modal_save").style.display = "inline";
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} else {
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gradioApp().getElementById("modal_save").style.display = "none";
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}
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event.stopPropagation();
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}
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function negmod(n, m) {
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return ((n % m) + m) % m;
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}
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function updateOnBackgroundChange() {
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const modalImage = gradioApp().getElementById("modalImage");
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if (modalImage && modalImage.offsetParent) {
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let currentButton = selected_gallery_button();
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let preview = gradioApp().querySelectorAll('.livePreview > img');
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if (opts.js_live_preview_in_modal_lightbox && preview.length > 0) {
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// show preview image if available
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modalImage.src = preview[preview.length - 1].src;
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} else if (currentButton?.children?.length > 0 && modalImage.src != currentButton.children[0].src) {
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modalImage.src = currentButton.children[0].src;
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if (modalImage.style.display === 'none') {
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const modal = gradioApp().getElementById("lightboxModal");
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modal.style.setProperty('background-image', `url(${modalImage.src})`);
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}
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}
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}
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}
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function modalImageSwitch(offset) {
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var galleryButtons = all_gallery_buttons();
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if (galleryButtons.length > 1) {
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var currentButton = selected_gallery_button();
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var result = -1;
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galleryButtons.forEach(function(v, i) {
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if (v == currentButton) {
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result = i;
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}
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});
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if (result != -1) {
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var nextButton = galleryButtons[negmod((result + offset), galleryButtons.length)];
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nextButton.click();
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const modalImage = gradioApp().getElementById("modalImage");
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const modal = gradioApp().getElementById("lightboxModal");
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modalImage.src = nextButton.children[0].src;
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if (modalImage.style.display === 'none') {
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modal.style.setProperty('background-image', `url(${modalImage.src})`);
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}
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setTimeout(function() {
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modal.focus();
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}, 10);
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}
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}
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}
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function saveImage() {
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const tabTxt2Img = gradioApp().getElementById("tab_txt2img");
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const tabImg2Img = gradioApp().getElementById("tab_img2img");
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const saveTxt2Img = "save_txt2img";
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const saveImg2Img = "save_img2img";
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if (tabTxt2Img.style.display != "none") {
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gradioApp().getElementById(saveTxt2Img).click();
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} else if (tabImg2Img.style.display != "none") {
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gradioApp().getElementById(saveImg2Img).click();
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} else {
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console.error("missing implementation for saving modal of this type");
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}
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}
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function modalSaveImage(event) {
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saveImage();
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event.stopPropagation();
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}
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function modalNextImage(event) {
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modalImageSwitch(1);
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event.stopPropagation();
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}
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function modalPrevImage(event) {
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modalImageSwitch(-1);
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event.stopPropagation();
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}
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function modalKeyHandler(event) {
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switch (event.key) {
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case "s":
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saveImage();
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break;
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case "ArrowLeft":
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modalPrevImage(event);
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break;
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case "ArrowRight":
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modalNextImage(event);
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break;
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case "Escape":
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closeModal();
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break;
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}
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}
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function setupImageForLightbox(e) {
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if (e.dataset.modded) {
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return;
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}
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e.dataset.modded = true;
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e.style.cursor = 'pointer';
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e.style.userSelect = 'none';
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e.addEventListener('mousedown', function(evt) {
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if (evt.button == 1) {
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open(evt.target.src);
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evt.preventDefault();
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return;
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}
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}, true);
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e.addEventListener('click', function(evt) {
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if (!opts.js_modal_lightbox || evt.button != 0) return;
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modalZoomSet(gradioApp().getElementById('modalImage'), opts.js_modal_lightbox_initially_zoomed);
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evt.preventDefault();
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showModal(evt);
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}, true);
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}
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function modalZoomSet(modalImage, enable) {
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if (modalImage) modalImage.classList.toggle('modalImageFullscreen', !!enable);
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}
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function modalZoomToggle(event) {
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var modalImage = gradioApp().getElementById("modalImage");
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modalZoomSet(modalImage, !modalImage.classList.contains('modalImageFullscreen'));
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event.stopPropagation();
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}
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function modalTileImageToggle(event) {
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const modalImage = gradioApp().getElementById("modalImage");
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const modal = gradioApp().getElementById("lightboxModal");
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const isTiling = modalImage.style.display === 'none';
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if (isTiling) {
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modalImage.style.display = 'block';
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modal.style.setProperty('background-image', 'none');
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} else {
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modalImage.style.display = 'none';
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modal.style.setProperty('background-image', `url(${modalImage.src})`);
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}
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event.stopPropagation();
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}
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onAfterUiUpdate(function() {
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var fullImg_preview = gradioApp().querySelectorAll('.gradio-gallery > div > img');
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if (fullImg_preview != null) {
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fullImg_preview.forEach(setupImageForLightbox);
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}
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updateOnBackgroundChange();
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});
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document.addEventListener("DOMContentLoaded", function() {
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//const modalFragment = document.createDocumentFragment();
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const modal = document.createElement('div');
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modal.onclick = closeModal;
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modal.id = "lightboxModal";
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modal.tabIndex = 0;
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modal.addEventListener('keydown', modalKeyHandler, true);
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const modalControls = document.createElement('div');
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modalControls.className = 'modalControls gradio-container';
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modal.append(modalControls);
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const modalZoom = document.createElement('span');
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modalZoom.className = 'modalZoom cursor';
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modalZoom.innerHTML = '⤡';
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modalZoom.addEventListener('click', modalZoomToggle, true);
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modalZoom.title = "Toggle zoomed view";
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modalControls.appendChild(modalZoom);
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const modalTileImage = document.createElement('span');
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modalTileImage.className = 'modalTileImage cursor';
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modalTileImage.innerHTML = '⊞';
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modalTileImage.addEventListener('click', modalTileImageToggle, true);
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modalTileImage.title = "Preview tiling";
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modalControls.appendChild(modalTileImage);
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const modalSave = document.createElement("span");
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modalSave.className = "modalSave cursor";
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modalSave.id = "modal_save";
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modalSave.innerHTML = "🖫";
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modalSave.addEventListener("click", modalSaveImage, true);
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modalSave.title = "Save Image(s)";
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modalControls.appendChild(modalSave);
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const modalClose = document.createElement('span');
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modalClose.className = 'modalClose cursor';
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modalClose.innerHTML = '×';
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modalClose.onclick = closeModal;
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modalClose.title = "Close image viewer";
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modalControls.appendChild(modalClose);
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const modalImage = document.createElement('img');
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modalImage.id = 'modalImage';
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modalImage.onclick = closeModal;
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modalImage.tabIndex = 0;
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modalImage.addEventListener('keydown', modalKeyHandler, true);
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modal.appendChild(modalImage);
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const modalPrev = document.createElement('a');
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modalPrev.className = 'modalPrev';
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modalPrev.innerHTML = '❮';
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modalPrev.tabIndex = 0;
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modalPrev.addEventListener('click', modalPrevImage, true);
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modalPrev.addEventListener('keydown', modalKeyHandler, true);
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modal.appendChild(modalPrev);
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const modalNext = document.createElement('a');
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modalNext.className = 'modalNext';
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modalNext.innerHTML = '❯';
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modalNext.tabIndex = 0;
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modalNext.addEventListener('click', modalNextImage, true);
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modalNext.addEventListener('keydown', modalKeyHandler, true);
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modal.appendChild(modalNext);
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try {
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gradioApp().appendChild(modal);
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} catch (e) {
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gradioApp().body.appendChild(modal);
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}
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document.body.appendChild(modal);
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});
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