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, preload)
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 = preload ? "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, preload);
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 setTimeout(function() { position_image(img, backend_width, backend_height, offset, preload); }, 1);
140 function display_image_num(num, offset)
142 var screen_size = find_width();
145 if (global_image_list[num][2] == -1) {
146 // no size information, use our pessimal guess
147 adjusted_size = max_image_size(screen_size);
149 adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
152 var evt = global_image_list[num][0];
153 var filename = global_image_list[num][1];
154 var backend_width = adjusted_size[0];
155 var backend_height = adjusted_size[1];
156 var url = window.location.origin + "/" + evt + "/" + backend_width + "x" + backend_height + "/" + filename;
159 display_image(url, adjusted_size[2], adjusted_size[3], elem_id, offset, false);
161 if (global_infobox) {
163 var dpr = find_dpr();
164 var elem_id = num + "_box";
166 url = window.location.origin + "/" + evt + "/" + backend_width + "x" + backend_height + "/box/" + filename;
168 url = window.location.origin + "/" + evt + "/" + backend_width + "x" + backend_height + "@" + dpr.toFixed(2) + "/box/" + filename;
170 display_image(url, adjusted_size[2], adjusted_size[3], elem_id, offset, true);
174 // Update the "download original" link.
175 var original_url = window.location.origin + "/" + evt + "/original/" + filename;
176 document.getElementById("origdownload").href = original_url;
178 // If it's a raw image, show a JPEG link.
179 var fulldownload = document.getElementById("fulldownload");
180 if (filename.match(/\.(nef|cr2)$/i)) {
181 fulldownload.style.display = "block";
182 var full_url = window.location.origin + "/" + evt + "/" + filename;
183 document.getElementById("fulldownloadlink").href = full_url;
184 origdownload.innerHTML = "Download original image (RAW)";
186 fulldownload.style.display = "none";
187 origdownload.innerHTML = "Download original image";
190 // replace the anchor part (if any) with the image number
191 window.location.hash = "#" + (num+1);
195 function can_go_next()
197 return (global_image_num < global_image_list.length - 1);
200 function can_go_previous()
202 return (global_image_num > 0);
205 function set_opacity(id, amount)
207 var elem = document.getElementById(id);
209 // If optionmenu is visible, options is also visible.
210 if (id === "options" && amount < 0.7) {
211 var optionmenu = document.getElementById("optionmenu");
212 if (optionmenu.style.display === "block") {
216 elem.style.opacity = amount;
219 function position_image(img, backend_width, backend_height, offset, preload)
221 var screen_size = find_width();
222 var dpr = find_dpr();
225 if (backend_width == -1) {
226 // no size information, use our pessimal guess
227 var adjusted_size = max_image_size(screen_size);
228 width = adjusted_size[0];
229 height = adjusted_size[1];
231 // use the exact information
232 var adjusted_size = pick_image_size(screen_size, [ backend_width, backend_height ]);
233 width = adjusted_size[2];
234 height = adjusted_size[3];
237 var extra_x_offset = find_width()[0] * offset;
238 var left = (screen_size[0] - width) / 2;
239 var top = (screen_size[1] - height) / 2;
241 if (global_infobox) top -= dpr * (24/2);
243 // center the image on-screen
244 img.style.position = "absolute";
245 img.style.left = (left / dpr) + "px";
246 img.style.transform = "translate(" + extra_x_offset + "px,0px)";
249 img.style.top = (top + height) / dpr + "px";
251 img.style.top = (top / dpr) + "px";
252 img.style.lineHeight = (height / dpr) + "px";
253 img.style.width = (width / dpr) + "px";
254 img.style.height = (height / dpr) + "px";
258 function update_shown_images()
260 // Go through and remove all the elements that are not supposed to be there.
261 var main = document.getElementById("main");
262 var children = main.children;
264 for (var i = 0; i < children.length; i++) {
265 var child = children[i];
267 if (child.className === "fsimg") {
268 inum = parseInt(child.id);
269 } else if (child.className === "fsbox") {
270 inum = parseInt(child.id.replace("_box", ""));
275 // FIXME: For whatever reason, if we don't actually remove an item
276 // and then scroll it out of view, Chrome scrolls to it.
277 // So don't keep anything that's going to be a preload;
278 // we'll have to recreate the element entirely.
279 //if (inum !== global_image_num - 1 &&
280 // inum !== global_image_num &&
281 // inum !== global_image_num + 1) {
282 // to_remove.push(child);
284 if (inum !== global_image_num) {
285 to_remove.push(child);
288 for (let child of to_remove) {
289 child.parentNode.removeChild(child);
292 // Add any missing elements. Note that we add the main one first,
293 // so that the preloads have an element to fire onload off of.
294 display_image_num(global_image_num, 0);
295 if (can_go_previous()) {
296 display_image_num(global_image_num - 1, -1);
299 display_image_num(global_image_num + 1, 1);
305 update_shown_images();
307 set_opacity("previous", can_go_previous() ? global_default_opacity : global_disabled_opacity);
308 set_opacity("next", can_go_next() ? global_default_opacity : global_disabled_opacity);
309 set_opacity("close", global_default_opacity);
310 set_opacity("options", global_default_opacity);
313 function go_previous()
315 if (!can_go_previous()) {
320 update_shown_images();
321 if (can_go_previous()) {
322 set_opacity("previous", global_default_opacity);
324 set_opacity("previous", global_disabled_opacity);
326 set_opacity("next", can_go_next() ? global_default_opacity : global_disabled_opacity);
331 if (!can_go_next()) {
336 update_shown_images();
338 set_opacity("next", global_default_opacity);
340 set_opacity("next", global_disabled_opacity);
342 set_opacity("previous", can_go_previous() ? global_default_opacity : global_disabled_opacity);
347 if (global_image_num > 0) {
348 window.location = global_return_url + '#' + (global_image_num + 1);
350 window.location = global_return_url;
354 function toggle_optionmenu()
356 var optionmenu = document.getElementById("optionmenu");
357 if (optionmenu.style.display === "block") {
358 optionmenu.style.display = "none";
360 optionmenu.style.display = "block";
361 set_opacity("options", 0.7);
364 window['toggle_optionmenu'] = toggle_optionmenu;
366 function draw_text(msg)
368 // remove any text we might have left
369 var text = document.getElementById("text");
371 text.parentNode.removeChild(text);
374 text = document.createElement("p");
376 text.style.position = "absolute";
377 text.style.color = "white";
378 text.style.lineHeight = "24px";
379 text.style.font = "24px verdana, arial, sans-serif";
380 text.innerHTML = msg;
382 var main = document.getElementById("main");
383 main.appendChild(text);
385 text.style.left = (main.clientWidth - text.clientWidth) / 2 + "px";
386 text.style.top = (main.clientHeight - text.clientHeight) / 2 + "px";
389 function fade_text(opacity)
391 set_opacity("text", opacity);
397 setTimeout(function() { fade_text(opacity); }, 30);
399 var text = document.getElementById("text");
401 text.parentNode.removeChild(text);
406 function select_image(evt, filename, selected)
409 draw_text("Selecting " + filename + "...");
411 draw_text("Unselecting " + filename + "...");
414 var req = new XMLHttpRequest();
415 req.open("POST", window.location.origin + "/select", false);
416 req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
417 req.send("event=" + evt + "&filename=" + filename + "&selected=" + selected);
419 setTimeout(function() { fade_text(0.99); }, 30);
422 function key_down(which)
424 if (which == 39) { // right
426 set_opacity("next", global_highlight_opacity);
428 } else if (which == 37) { // left
429 if (can_go_previous()) {
430 set_opacity("previous", global_highlight_opacity);
432 } else if (which == 27) { // escape
433 set_opacity("close", global_higlight_opacity);
435 check_for_hash_change();
439 function key_up(which) {
440 if (which == 39) { // right
442 set_opacity("next", global_default_opacity);
445 } else if (which == 37) { // left
446 if (can_go_previous()) {
447 set_opacity("previous", global_default_opacity);
450 } else if (which == 27) { // escape
451 set_opacity("close", global_default_opacity);
453 } else if (which == 32 && global_select) { // space
454 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1], 1);
455 } else if (which == 85 && global_select) { // u
456 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1], 0);
458 check_for_hash_change();
462 function parse_image_num(default_value) {
463 var num = parseInt(window.location.hash.substr(1));
464 if (num >= 1 && num <= global_image_list.length) { // and then num != NaN
467 return default_value;
470 window['parse_image_num'] = parse_image_num;
472 function check_for_hash_change() {
473 var num = parse_image_num(-1);
474 if (num != -1 && num != global_image_num) {
475 global_image_num = num;
480 function toggle_immersive() {
481 if (global_default_opacity == 0.7) {
482 global_disabled_opacity = 0.0;
483 global_default_opacity = 0.0;
484 global_highlight_opacity = 0.2;
485 global_infobox = false;
486 document.getElementById('immersivetoggle').innerHTML = 'Show decorations';
488 global_disabled_opacity = 0.1;
489 global_default_opacity = 0.7;
490 global_highlight_opacity = 1.0;
491 global_infobox = true;
492 document.getElementById('immersivetoggle').innerHTML = 'Hide all decorations';
496 window['toggle_immersive'] = toggle_immersive;
498 window.onload = function() {
500 setInterval(check_for_hash_change, 1000);
502 var body = document.body;
503 body.onresize = function() { relayout(); };
504 body.onkeydown = function(evt) { key_down(evt.keyCode); };
505 body.onkeyup = function(evt) { key_up(evt.keyCode); };
506 body.onhashchange = function() { check_for_hash_change(); };
507 body.onclick = function() { check_for_hash_change(); };
509 var previous = document.getElementById('previous');
510 previous.onmousedown = function() { if (can_go_previous()) { set_opacity('previous', global_highlight_opacity); } };
511 previous.onmouseup = function() { if (can_go_previous()) { set_opacity('previous', global_default_opacity); go_previous(); } };
512 previous.onmouseout = function() { if (can_go_previous()) { set_opacity('previous', global_default_opacity); } };
514 var next = document.getElementById('next');
515 next.onmousedown = function() { if (can_go_next()) { set_opacity('next', global_highlight_opacity); } };
516 next.onmouseup = function() { if (can_go_next()) { set_opacity('next', global_default_opacity); go_next(); } };
517 next.onmouseout = function() { if (can_go_next()) { set_opacity('next', global_default_opacity); } };
519 var close = document.getElementById('close');
520 close.onmousedown = function() { set_opacity('close', global_highlight_opacity); };
521 close.onmouseup = function() { set_opacity('close', global_default_opacity); do_close(); };
522 close.onmouseout = function() { set_opacity('close', global_default_opacity); };
524 var options = document.getElementById('options');
525 options.onmousedown = function() { set_opacity('options', global_highlight_opacity); };
526 options.onmouseup = function() { set_opacity('options', global_default_opacity); toggle_optionmenu(); };
527 options.onmouseout = function() { set_opacity('options', global_default_opacity); };