3 var global_disabled_opacity = 0.1;
4 var global_default_opacity = 0.7;
5 var global_highlight_opacity = 1.0;
6 var global_infobox = true;
11 return [window.innerWidth * dpr, window.innerHeight * dpr];
16 return window.devicePixelRatio || 1;
20 * pr0n can resize to any size we'd like, but we're much more likely
21 * to have this set of fixed-resolution screens cached, so to increase
22 * performance, we round down to the closest fit and use that. This
23 * function is a pessimal estimate of what thumbnail size we can _always_
24 * fit on the screen -- it's right if and only if all images are 4:3
25 * (and landscape). If individual size information is available, use
26 * pick_image_size, below.
48 function max_image_size(screen_size)
51 for (i = 0; i < fixed_sizes.length; ++i) {
52 if (screen_size[0] >= fixed_sizes[i][0] && screen_size[1] >= fixed_sizes[i][1]) {
53 return fixed_sizes[i];
59 function pick_image_size(screen_size, image_size)
62 for (i = 0; i < fixed_sizes.length; ++i) {
63 // this is a duplicate of pr0n's resizing code, hope for no floating-point
65 var thumbxres = fixed_sizes[i][0];
66 var thumbyres = fixed_sizes[i][1];
67 var width = image_size[0];
68 var height = image_size[1];
70 if (!(thumbxres >= width && thumbyres >= height)) {
71 var sfh = width / thumbxres;
72 var sfv = height / thumbyres;
80 width = Math.floor(width);
81 height = Math.floor(height);
84 if (screen_size[0] >= width && screen_size[1] >= height) {
85 // be sure _not_ to return a reference
86 return [ fixed_sizes[i][0], fixed_sizes[i][1], width, height ];
92 function rename_element(old_name, new_name)
94 // Remove any element that's in the way.
95 var elem = document.getElementById(new_name);
97 elem.parentNode.removeChild(elem);
100 elem = document.getElementById(old_name);
107 function display_image(url, backend_width, backend_height, elem_id, offset, box)
109 // See if this image already exists in the DOM; if not, add it.
110 var img = document.getElementById(elem_id);
112 img = document.createElement("img");
115 img.className = box ? "fsbox" : "fsimg";
117 img.style.position = "absolute";
118 img.style.transformOrigin = "top left";
119 document.getElementById("main").appendChild(img);
123 position_image(img, backend_width, backend_height, offset, box);
125 // This is a preload, so wait for the main image to be ready.
126 // The test for .complete is an old IE hack, which I don't know if is relevant anymore.
127 var main_img = document.getElementById(global_image_num);
128 if (main_img === null || main_img.complete) {
131 main_img.addEventListener('load', function() { img.src = url; }, false);
134 // Seemingly one needs to delay position_image(), or Firefox will set the initial
135 // scroll offset completely off.
136 img.style.display = 'none';
137 setTimeout(function() {
138 position_image(img, backend_width, backend_height, offset, box);
139 img.style.display = null;
144 function display_image_num(num, offset)
146 var screen_size = find_width();
149 if (global_image_list[num][2] == -1) {
150 // no size information, use our pessimal guess
151 adjusted_size = max_image_size(screen_size);
153 adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
156 var evt = global_image_list[num][0];
157 var filename = global_image_list[num][1];
158 var backend_width = adjusted_size[0];
159 var backend_height = adjusted_size[1];
160 var url = window.location.origin + "/" + evt + "/" + backend_width + "x" + backend_height + "/" + filename;
163 display_image(url, adjusted_size[2], adjusted_size[3], elem_id, offset, false);
165 if (global_infobox) {
167 var dpr = find_dpr();
168 var elem_id = num + "_box";
170 url = window.location.origin + "/" + evt + "/" + backend_width + "x" + backend_height + "/box/" + filename;
172 url = window.location.origin + "/" + evt + "/" + backend_width + "x" + backend_height + "@" + dpr.toFixed(2) + "/box/" + filename;
174 display_image(url, adjusted_size[2], adjusted_size[3], elem_id, offset, true);
175 document.getElementById(elem_id).style.transform += " scale(" + (1.0 / dpr) + ")";
179 // Update the "download original" link.
180 var original_url = window.location.origin + "/" + evt + "/original/" + filename;
181 document.getElementById("origdownload").href = original_url;
183 // If it's a raw image, show a JPEG link.
184 var fulldownload = document.getElementById("fulldownload");
185 if (filename.match(/\.(nef|cr2)$/i)) {
186 fulldownload.style.display = "block";
187 var full_url = window.location.origin + "/" + evt + "/" + filename;
188 document.getElementById("fulldownloadlink").href = full_url;
189 origdownload.innerHTML = "Download original image (RAW)";
191 fulldownload.style.display = "none";
192 origdownload.innerHTML = "Download original image";
195 // replace the anchor part (if any) with the image number
196 window.location.hash = "#" + (num+1);
200 function can_go_next()
202 return (global_image_num < global_image_list.length - 1);
205 function can_go_previous()
207 return (global_image_num > 0);
210 function set_opacity(id, amount)
212 var elem = document.getElementById(id);
214 // If optionmenu is visible, options is also visible.
215 if (id === "options" && amount < 0.7) {
216 var optionmenu = document.getElementById("optionmenu");
217 if (optionmenu.style.display === "block") {
221 elem.style.opacity = amount;
224 function position_image(img, backend_width, backend_height, offset, box)
226 var screen_size = find_width();
227 var dpr = find_dpr();
230 if (backend_width == -1) {
231 // no size information, use our pessimal guess
232 var adjusted_size = max_image_size(screen_size);
233 width = adjusted_size[0];
234 height = adjusted_size[1];
236 // use the exact information
237 var adjusted_size = pick_image_size(screen_size, [ backend_width, backend_height ]);
238 width = adjusted_size[2];
239 height = adjusted_size[3];
242 var extra_x_offset = find_width()[0] * offset;
243 var left = (screen_size[0] - width) / 2;
244 var top = (screen_size[1] - height) / 2;
246 if (global_infobox) {
247 top = Math.max(top - dpr * (24/2), 0);
250 // center the image on-screen
251 img.style.position = "absolute";
252 img.style.left = (left / dpr) + "px";
253 img.style.transform = "translate(" + extra_x_offset + "px,0px)";
256 img.style.top = Math.min(top + height, screen_size[1] - 24) / dpr + "px";
258 img.style.top = (top / dpr) + "px";
259 img.style.lineHeight = (height / dpr) + "px";
260 img.style.width = (width / dpr) + "px";
261 img.style.height = (height / dpr) + "px";
265 function update_shown_images()
267 // Go through and remove all the elements that are not supposed to be there.
268 var main = document.getElementById("main");
269 var children = main.children;
271 for (var i = 0; i < children.length; i++) {
272 var child = children[i];
274 if (child.className === "fsimg") {
275 inum = parseInt(child.id);
276 } else if (child.className === "fsbox") {
277 inum = parseInt(child.id.replace("_box", ""));
282 // FIXME: For whatever reason, if we don't actually remove an item
283 // and then scroll it out of view, Chrome scrolls to it.
284 // So don't keep anything that's going to be a preload;
285 // we'll have to recreate the element entirely.
286 //if (inum !== global_image_num - 1 &&
287 // inum !== global_image_num &&
288 // inum !== global_image_num + 1) {
289 // to_remove.push(child);
291 if (inum !== global_image_num) {
292 to_remove.push(child);
295 for (let child of to_remove) {
296 child.parentNode.removeChild(child);
299 // Add any missing elements. Note that we add the main one first,
300 // so that the preloads have an element to fire onload off of.
301 display_image_num(global_image_num, 0);
302 if (can_go_previous()) {
303 display_image_num(global_image_num - 1, -1);
306 display_image_num(global_image_num + 1, 1);
312 update_shown_images();
314 set_opacity("previous", can_go_previous() ? global_default_opacity : global_disabled_opacity);
315 set_opacity("next", can_go_next() ? global_default_opacity : global_disabled_opacity);
316 set_opacity("close", global_default_opacity);
317 set_opacity("options", global_default_opacity);
320 function go_previous()
322 if (!can_go_previous()) {
327 update_shown_images();
328 if (can_go_previous()) {
329 set_opacity("previous", global_default_opacity);
331 set_opacity("previous", global_disabled_opacity);
333 set_opacity("next", can_go_next() ? global_default_opacity : global_disabled_opacity);
338 if (!can_go_next()) {
343 update_shown_images();
345 set_opacity("next", global_default_opacity);
347 set_opacity("next", global_disabled_opacity);
349 set_opacity("previous", can_go_previous() ? global_default_opacity : global_disabled_opacity);
354 if (global_image_num > 0) {
355 window.location = global_return_url + '#' + (global_image_num + 1);
357 window.location = global_return_url;
361 function toggle_optionmenu()
363 var optionmenu = document.getElementById("optionmenu");
364 if (optionmenu.style.display === "block") {
365 optionmenu.style.display = "none";
367 optionmenu.style.display = "block";
368 set_opacity("options", 0.7);
371 window['toggle_optionmenu'] = toggle_optionmenu;
373 function draw_text(msg)
375 // remove any text we might have left
376 var text = document.getElementById("text");
378 text.parentNode.removeChild(text);
381 text = document.createElement("p");
383 text.style.position = "absolute";
384 text.style.color = "white";
385 text.style.lineHeight = "24px";
386 text.style.font = "24px verdana, arial, sans-serif";
387 text.innerHTML = msg;
389 document.getElementById("main").appendChild(text);
391 var screen_size = find_width();
392 text.style.left = (screen_size[0] - text.clientWidth) / 2 + "px";
393 text.style.top = (screen_size[1] - text.clientHeight) / 2 + "px";
396 function fade_text(opacity)
398 set_opacity("text", opacity);
404 setTimeout(function() { fade_text(opacity); }, 30);
406 var text = document.getElementById("text");
408 text.parentNode.removeChild(text);
413 function select_image(evt, filename, selected)
416 draw_text("Selecting " + filename + "...");
418 draw_text("Unselecting " + filename + "...");
421 var req = new XMLHttpRequest();
422 req.open("POST", window.location.origin + "/select", true);
423 req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
424 req.send("event=" + evt + "&filename=" + filename + "&selected=" + selected);
426 setTimeout(function() { fade_text(0.99); }, 30);
429 function key_down(which)
431 if (which == 39) { // right
433 set_opacity("next", global_highlight_opacity);
435 } else if (which == 37) { // left
436 if (can_go_previous()) {
437 set_opacity("previous", global_highlight_opacity);
439 } else if (which == 27) { // escape
440 set_opacity("close", global_higlight_opacity);
442 check_for_hash_change();
446 function key_up(which) {
447 if (which == 39) { // right
449 set_opacity("next", global_default_opacity);
452 } else if (which == 37) { // left
453 if (can_go_previous()) {
454 set_opacity("previous", global_default_opacity);
457 } else if (which == 27) { // escape
458 set_opacity("close", global_default_opacity);
460 } else if (which == 32 && global_select) { // space
461 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1], 1);
462 } else if (which == 85 && global_select) { // u
463 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1], 0);
465 check_for_hash_change();
469 function parse_image_num(default_value) {
470 var num = parseInt(window.location.hash.substr(1));
471 if (num >= 1 && num <= global_image_list.length) { // and then num != NaN
474 return default_value;
477 window['parse_image_num'] = parse_image_num;
479 function check_for_hash_change() {
480 var num = parse_image_num(-1);
481 if (num != -1 && num != global_image_num) {
482 global_image_num = num;
487 function toggle_immersive() {
488 if (global_default_opacity == 0.7) {
489 global_disabled_opacity = 0.0;
490 global_default_opacity = 0.0;
491 global_highlight_opacity = 0.2;
492 global_infobox = false;
493 document.getElementById('immersivetoggle').innerHTML = 'Show decorations';
495 global_disabled_opacity = 0.1;
496 global_default_opacity = 0.7;
497 global_highlight_opacity = 1.0;
498 global_infobox = true;
499 document.getElementById('immersivetoggle').innerHTML = 'Hide all decorations';
503 window['toggle_immersive'] = toggle_immersive;
506 var swipe_start_x = 0;
508 function set_swipe_pos(x, transition)
510 x = Math.max(x, -window.innerWidth);
511 x = Math.min(x, window.innerWidth);
512 if (!can_go_previous()) {
513 x = Math.min(x, window.innerWidth / 8);
515 if (!can_go_next()) {
516 x = Math.max(x, -window.innerWidth / 8);
519 var dpr = find_dpr();
520 var main = document.getElementById("main");
521 var children = main.children;
523 for (var i = 0; i < children.length; i++) {
524 var child = children[i];
525 if (child.className === "fsimg") {
526 var inum = parseInt(child.id);
527 var offset = inum - global_image_num;
528 child.style.transition = transition;
529 child.style.transform = "translate(" + (x + find_width()[0] * offset / dpr) + "px,0px)";
530 } else if (child.className === "fsbox") {
531 var inum = parseInt(child.id.replace("_box", ""));
532 var offset = inum - global_image_num;
533 child.style.transition = transition;
534 child.style.transform = "translate(" + (x + find_width()[0] * offset / dpr) + "px,0px) scale(" + (1.0 / dpr) + ")";
539 function start_swipe(e)
542 swipe_start_x = e.changedTouches[0].pageX;
545 function end_swipe(e)
548 var new_x = (e.changedTouches[0].pageX - swipe_start_x);
549 if (new_x < -window.innerWidth / 4 && can_go_next()) {
550 set_swipe_pos(-window.innerWidth, "transform 0.1s ease-out");
551 setTimeout(function() { go_next(); }, 100);
552 } else if (new_x > window.innerWidth / 4 && can_go_previous()) {
553 set_swipe_pos(window.innerWidth, "transform 0.1s ease-out");
554 setTimeout(function() { go_previous(); }, 100);
556 set_swipe_pos(0, "transform 0.1s ease-out");
565 var new_x = (e.changedTouches[0].pageX - swipe_start_x);
566 set_swipe_pos(new_x, null);
570 window.onload = function() {
572 setInterval(check_for_hash_change, 1000);
574 document.addEventListener('touchstart', start_swipe, false);
575 document.addEventListener('touchend', end_swipe, false);
576 document.addEventListener('touchmove', swipe, false)
578 var body = document.body;
579 body.onresize = function() { relayout(); };
580 body.onkeydown = function(evt) { key_down(evt.keyCode); };
581 body.onkeyup = function(evt) { key_up(evt.keyCode); };
582 body.onhashchange = function() { check_for_hash_change(); };
583 body.onclick = function() { check_for_hash_change(); };
585 var previous = document.getElementById('previous');
586 previous.onmousedown = function() { if (can_go_previous()) { set_opacity('previous', global_highlight_opacity); } };
587 previous.onmouseup = function() { if (can_go_previous()) { set_opacity('previous', global_default_opacity); go_previous(); } };
588 previous.onmouseout = function() { if (can_go_previous()) { set_opacity('previous', global_default_opacity); } };
590 var next = document.getElementById('next');
591 next.onmousedown = function() { if (can_go_next()) { set_opacity('next', global_highlight_opacity); } };
592 next.onmouseup = function() { if (can_go_next()) { set_opacity('next', global_default_opacity); go_next(); } };
593 next.onmouseout = function() { if (can_go_next()) { set_opacity('next', global_default_opacity); } };
595 var close = document.getElementById('close');
596 close.onmousedown = function() { set_opacity('close', global_highlight_opacity); };
597 close.onmouseup = function() { set_opacity('close', global_default_opacity); do_close(); };
598 close.onmouseout = function() { set_opacity('close', global_default_opacity); };
600 var options = document.getElementById('options');
601 options.onmousedown = function() { set_opacity('options', global_highlight_opacity); };
602 options.onmouseup = function() { set_opacity('options', global_default_opacity); toggle_optionmenu(); };
603 options.onmouseout = function() { set_opacity('options', global_default_opacity); };