7 if (window.XMLHttpRequest) {
10 req = new XMLHttpRequest();
14 } else if (window.ActiveXObject) {
17 req = new ActiveXObject("Msxml2.XMLHTTP");
20 req = new ActiveXObject("Microsoft.XMLHTTP");
30 if (typeof(window.innerWidth) == 'number') {
32 return [window.innerWidth, window.innerHeight];
33 } else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
34 // IE 6+ in 'standards compliant mode'
35 return [document.documentElement.clientWidth, document.documentElement.clientHeight];
36 } else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
38 return [document.body.clientWidth, document.body.clientHeight];
44 * pr0n can resize to any size we'd like, but we're much more likely
45 * to have this set of fixed-resolution screens cached, so to increase
46 * performance, we round down to the closest fit and use that. This
47 * function is a pessimal estimate of what thumbnail size we can _always_
48 * fit on the screen -- it's right if and only if all images are 4:3
49 * (and landscape). If individual size information is available, use
50 * pick_image_size, below.
68 function max_image_size(screen_size)
71 for (i = 0; i < fixed_sizes.length; ++i) {
72 if (screen_size[0] >= fixed_sizes[i][0] && screen_size[1] >= fixed_sizes[i][1]) {
73 return fixed_sizes[i];
79 function pick_image_size(screen_size, image_size)
82 for (i = 0; i < fixed_sizes.length; ++i) {
83 // this is a duplicate of pr0n's resizing code, hope for no floating-point
85 var thumbxres = fixed_sizes[i][0];
86 var thumbyres = fixed_sizes[i][1];
87 var width = image_size[0];
88 var height = image_size[1];
90 if (!(thumbxres >= width && thumbyres >= height)) {
91 var sfh = width / thumbxres;
92 var sfv = height / thumbyres;
100 width = Math.floor(width);
101 height = Math.floor(height);
104 if (screen_size[0] >= width && screen_size[1] >= height) {
105 // be sure _not_ to return a reference
106 return [ fixed_sizes[i][0], fixed_sizes[i][1], width, height ];
112 function replace_image_element(url, element_id, parent_node)
114 var img = document.getElementById(element_id);
116 if (img.src === url) {
119 img.parentNode.removeChild(img);
122 img = document.createElement("img");
126 parent_node.appendChild(img);
130 function rename_element(old_name, new_name)
132 // Remove any element that's in the way.
133 var elem = document.getElementById(new_name);
135 elem.parentNode.removeChild(elem);
138 elem = document.getElementById(old_name);
145 function display_image(width, height, evt, filename, element_id)
147 var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/nobox/" + filename;
148 var main = document.getElementById("iehack");
149 var preload = document.getElementById("preload");
151 // See if we have a preload going on that we can reuse.
152 if (element_id == "image" && preload !== null && preload.src == url) {
153 rename_element("preload_box", "image_box");
154 img = rename_element("preload", "image");
156 img = replace_image_element(url, element_id, main);
158 img.style.position = "absolute";
159 img.style.left = "0px";
160 img.style.top = "0px";
162 if (global_infobox != 'nobox/') {
163 var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/box/" + filename;
164 var boximg = replace_image_element(url, element_id + "_box", main);
166 boximg.style.position = "absolute";
167 boximg.style.left = "0px";
168 boximg.style.bottom = "-1px";
174 function display_image_num(num, element_id)
176 var screen_size = find_width();
179 if (global_image_list[num][2] == -1) {
180 // no size information, use our pessimal guess
181 adjusted_size = max_image_size(screen_size);
183 adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
186 var img = display_image(adjusted_size[0], adjusted_size[1], global_image_list[num][0], global_image_list[num][1], element_id);
188 if (element_id == "image") {
189 // we want to shrink the box as much as possible if we know the true
193 // replace the anchor part (if any) with the image number
194 window.location.hash = "#" + (num+1);
200 function prepare_preload(img, num)
202 // cancel any pending preload
203 var preload = document.getElementById("preload");
204 if (preload !== null) {
205 preload.parentNode.removeChild(preload);
208 var preload_box = document.getElementById("preload_box");
209 if (preload_box !== null) {
210 preload_box.parentNode.removeChild(preload_box);
213 // grmf -- IE doesn't fire onload if the image was loaded from cache, so check for
214 // completeness first; should at least be _somewhat_ better
216 display_image_num(num, "preload");
218 img.onload = function() { display_image_num(num, "preload"); };
222 function can_go_next()
224 return (global_image_num < global_image_list.length - 1);
227 function can_go_previous()
229 return (global_image_num > 0);
232 function set_opacity(id, amount)
234 var elem = document.getElementById(id);
235 if (typeof(elem.style.opacity) != 'undefined') { // W3C
236 elem.style.opacity = amount;
237 } else if (typeof(elem.style.mozOpacity) != 'undefined') { // older Mozilla
238 elem.style.mozOpacity = amount;
239 } else if (typeof(elem.style.filter) != 'undefined') { // IE
240 if (elem.style.filter.indexOf("alpha") == -1) {
241 // add an alpha filter if there isn't one already
242 if (elem.style.filter) {
243 elem.style.filter += " ";
245 elem.style.filter = "";
247 elem.style.filter += "alpha(opacity=" + (amount*100.0) + ")";
249 // ugh? this seems to break in color index mode...
250 if (typeof(elem.filters) == 'unknown') {
251 elem.style.filter = "alpha(opacity=" + (amount*100.0) + ")";
253 elem.filters.alpha.opacity = (amount * 100.0);
256 } else { // no alpha support
258 elem.style.visibility = "visible";
259 elem.style.zorder = 1;
261 elem.style.visibility = "hidden";
266 function center_image(num)
268 var screen_size = find_width();
271 if (global_image_list[num][2] == -1) {
272 // no size information, use our pessimal guess
273 var adjusted_size = max_image_size(screen_size);
274 width = adjusted_size[0];
275 height = adjusted_size[1];
277 // use the exact information
278 var adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
279 width = adjusted_size[2];
280 height = adjusted_size[3];
283 // center the image on-screen
284 var main = document.getElementById("main");
285 main.style.position = "absolute";
286 main.style.left = (screen_size[0] - width) / 2 + "px";
287 main.style.top = (screen_size[1] - height) / 2 + "px";
288 main.style.width = width + "px";
289 main.style.height = height + "px";
290 main.style.lineHeight = height + "px";
295 var img = display_image_num(global_image_num, "image");
297 prepare_preload(img, global_image_num + 1);
300 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
301 set_opacity("next", can_go_next() ? 0.7 : 0.1);
302 set_opacity("close", 0.7);
305 function go_previous()
307 if (!can_go_previous()) {
311 var img = display_image_num(--global_image_num, "image");
312 if (can_go_previous()) {
313 set_opacity("previous", 0.7);
314 prepare_preload(img, global_image_num - 1);
316 set_opacity("previous", 0.1);
318 set_opacity("next", can_go_next() ? 0.7 : 0.1);
323 if (!can_go_next()) {
327 var img = display_image_num(++global_image_num, "image");
329 set_opacity("next", 0.7);
330 prepare_preload(img, global_image_num + 1);
332 set_opacity("next", 0.1);
334 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
339 window.location = global_return_url;
342 function draw_text(msg)
344 // remove any text we might have left
345 var text = document.getElementById("text");
347 text.parentNode.removeChild(text);
350 text = document.createElement("p");
352 text.style.position = "absolute";
353 text.style.color = "white";
354 text.style.lineHeight = "24px";
355 text.style.font = "24px verdana, arial, sans-serif";
356 text.innerHTML = msg;
358 var main = document.getElementById("main");
359 main.appendChild(text);
361 text.style.left = (main.clientWidth - text.clientWidth) / 2 + "px";
362 text.style.top = (main.clientHeight - text.clientHeight) / 2 + "px";
365 function fade_text(opacity)
367 set_opacity("text", opacity);
373 setTimeout("fade_text(" + opacity + ")", 30);
375 var text = document.getElementById("text");
377 text.parentNode.removeChild(text);
382 function select_image(evt, filename, selected)
389 draw_text("Selecting " + filename + "...");
391 draw_text("Unselecting " + filename + "...");
394 req.open("POST", "http://" + global_vhost + "/select", false);
395 req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
396 req.send("event=" + evt + "&filename=" + filename + "&selected=" + selected);
398 setTimeout("fade_text(0.99)", 30);
401 function key_down(which)
403 if (which == 39) { // right
405 set_opacity("next", 0.99);
407 } else if (which == 37) { // left
408 if (can_go_previous()) {
409 set_opacity("previous", 0.99);
411 } else if (which == 27) { // escape
412 set_opacity("close", 0.99);
414 check_for_hash_change();
418 function key_up(which) {
419 if (which == 39) { // right
421 set_opacity("next", 0.7);
424 } else if (which == 37) { // left
425 if (can_go_previous()) {
426 set_opacity("previous", 0.7);
429 } else if (which == 27) { // escape
430 set_opacity("close", 0.7);
432 } else if (which == 32 && global_select) { // space
433 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1], 1);
434 } else if (which == 85 && global_select) { // u
435 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1], 0);
437 check_for_hash_change();
441 // enable the horrible horrible IE PNG hack
442 function ie_png_hack()
444 var vstr = navigator.appVersion.split("MSIE");
445 var v = parseFloat(vstr[1]);
446 if (v >= 5.5 && v < 7.0 && document.body.filters) {
447 var next = document.getElementById("next");
448 next.outerHTML = "<span id=\"next\" style=\"display: inline-block; position: absolute; bottom: 0px; right: 0px; width: 50px; height: 50px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + next.src + "')\" onmousedown=\"if (can_go_next()) set_opacity('next', 1.0)\" onmouseup=\"if (can_go_next()) { set_opacity('next', 0.7); go_next(); }\" onmouseout=\"if (can_go_next()) { set_opacity('next', 0.7); }\" />";
450 var previous = document.getElementById("previous");
451 previous.outerHTML = "<span id=\"previous\" style=\"display: inline-block; position: absolute; bottom: 0px; right: 0px; width: 50px; height: 50px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + previous.src + "')\" onmousedown=\"if (can_go_previous()) set_opacity('previous', 1.0)\" onmouseup=\"if (can_go_previous()) { set_opacity('previous', 0.7); go_previous(); }\" onmouseout=\"if (can_go_previous()) { set_opacity('previous', 0.7); }\" />";
453 var close = document.getElementById("close");
454 close.outerHTML = "<span id=\"close\" style=\"display: inline-block; position: absolute; top: 0px; right: 0px; width: 50px; height: 50px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + close.src + "')\" onmousedown=\"set_opacity('close', 1.0)\" onmouseup=\"set_opacity('close', 0.7); do_close();\" onmouseout=\"set_opacity('close', 0.7);\" />";
458 function parse_image_num(default_value) {
459 var num = parseInt(window.location.hash.substr(1));
460 if (num >= 1 && num <= global_image_list.length) { // and then num != NaN
463 return default_value;
467 function check_for_hash_change() {
468 var num = parse_image_num(-1);
469 if (num != -1 && num != global_image_num) {
470 global_image_num = num;