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);
117 img.parentNode.removeChild(img);
120 img = document.createElement("img");
124 if (img.src != url) {
128 parent_node.appendChild(img);
132 function display_image(width, height, evt, filename, element_id)
134 var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/nobox/" + filename;
135 var main = document.getElementById("iehack");
136 var img = replace_image_element(url, element_id, main);
138 if (global_infobox != 'nobox') {
139 var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/box/" + filename;
140 var boximg = replace_image_element(url, element_id + "_box", main);
142 boximg.style.position = "absolute";
143 boximg.style.left = "0px";
144 boximg.style.bottom = "-1px";
150 function display_image_num(num, element_id)
152 var screen_size = find_width();
155 if (global_image_list[num][2] == -1) {
156 // no size information, use our pessimal guess
157 adjusted_size = max_image_size(screen_size);
159 adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
162 var img = display_image(adjusted_size[0], adjusted_size[1], global_image_list[num][0], global_image_list[num][1], element_id);
164 if (element_id == "image") {
165 // we want to shrink the box as much as possible if we know the true
169 // replace the anchor part (if any) with the image number
170 window.location.hash = "#" + (num+1);
176 function prepare_preload(img, num)
178 // cancel any pending preload
179 var preload = document.getElementById("preload");
180 if (preload !== null) {
181 preload.src = "data:";
182 preload.parentNode.removeChild(preload);
185 var preload_box = document.getElementById("preload_box");
186 if (preload_box !== null) {
187 preload_box.src = "data:";
188 preload_box.parentNode.removeChild(preload_box);
191 // grmf -- IE doesn't fire onload if the image was loaded from cache, so check for
192 // completeness first; should at least be _somewhat_ better
194 display_image_num(num, "preload");
196 img.onload = function() { display_image_num(num, "preload"); };
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);
213 if (typeof(elem.style.opacity) != 'undefined') { // W3C
214 elem.style.opacity = amount;
215 } else if (typeof(elem.style.mozOpacity) != 'undefined') { // older Mozilla
216 elem.style.mozOpacity = amount;
217 } else if (typeof(elem.style.filter) != 'undefined') { // IE
218 if (elem.style.filter.indexOf("alpha") == -1) {
219 // add an alpha filter if there isn't one already
220 if (elem.style.filter) {
221 elem.style.filter += " ";
223 elem.style.filter = "";
225 elem.style.filter += "alpha(opacity=" + (amount*100.0) + ")";
227 // ugh? this seems to break in color index mode...
228 if (typeof(elem.filters) == 'unknown') {
229 elem.style.filter = "alpha(opacity=" + (amount*100.0) + ")";
231 elem.filters.alpha.opacity = (amount * 100.0);
234 } else { // no alpha support
236 elem.style.visibility = "visible";
237 elem.style.zorder = 1;
239 elem.style.visibility = "hidden";
244 function center_image(num)
246 var screen_size = find_width();
249 if (global_image_list[num][2] == -1) {
250 // no size information, use our pessimal guess
251 var adjusted_size = max_image_size(screen_size);
252 width = adjusted_size[0];
253 height = adjusted_size[1];
255 // use the exact information
256 var adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
257 width = adjusted_size[2];
258 height = adjusted_size[3];
261 // center the image on-screen
262 var main = document.getElementById("main");
263 main.style.position = "absolute";
264 main.style.left = (screen_size[0] - width) / 2 + "px";
265 main.style.top = (screen_size[1] - height) / 2 + "px";
266 main.style.width = width + "px";
267 main.style.height = height + "px";
268 main.style.lineHeight = height + "px";
273 var img = display_image_num(global_image_num, "image");
275 prepare_preload(img, global_image_num + 1);
278 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
279 set_opacity("next", can_go_next() ? 0.7 : 0.1);
280 set_opacity("close", 0.7);
283 function go_previous()
285 if (!can_go_previous()) {
289 var img = display_image_num(--global_image_num, "image");
290 if (can_go_previous()) {
291 set_opacity("previous", 0.7);
292 prepare_preload(img, global_image_num - 1);
294 set_opacity("previous", 0.1);
296 set_opacity("next", can_go_next() ? 0.7 : 0.1);
301 if (!can_go_next()) {
305 var img = display_image_num(++global_image_num, "image");
307 set_opacity("next", 0.7);
308 prepare_preload(img, global_image_num + 1);
310 set_opacity("next", 0.1);
312 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
317 window.location = global_return_url;
320 function draw_text(msg)
322 // remove any text we might have left
323 var text = document.getElementById("text");
325 text.parentNode.removeChild(text);
328 text = document.createElement("p");
330 text.style.position = "absolute";
331 text.style.color = "white";
332 text.style.lineHeight = "24px";
333 text.style.font = "24px verdana, arial, sans-serif";
334 text.innerHTML = msg;
336 var main = document.getElementById("main");
337 main.appendChild(text);
339 text.style.left = (main.clientWidth - text.clientWidth) / 2 + "px";
340 text.style.top = (main.clientHeight - text.clientHeight) / 2 + "px";
343 function fade_text(opacity)
345 set_opacity("text", opacity);
351 setTimeout("fade_text(" + opacity + ")", 30);
353 var text = document.getElementById("text");
355 text.parentNode.removeChild(text);
360 function select_image(evt, filename)
366 draw_text("Selecting " + filename + "...");
368 req.open("POST", "http://" + global_vhost + "/select", false);
369 req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
370 req.send("mode=single&event=" + evt + "&filename=" + filename);
372 setTimeout("fade_text(0.99)", 30);
375 function key_down(which)
377 if (which == 39) { // right
379 set_opacity("next", 0.99);
381 } else if (which == 37) { // left
382 if (can_go_previous()) {
383 set_opacity("previous", 0.99);
385 } else if (which == 27) { // escape
386 set_opacity("close", 0.99);
388 check_for_hash_change();
392 function key_up(which) {
393 if (which == 39) { // right
395 set_opacity("next", 0.7);
398 } else if (which == 37) { // left
399 if (can_go_previous()) {
400 set_opacity("previous", 0.7);
403 } else if (which == 27) { // escape
404 set_opacity("close", 0.7);
406 } else if (which == 32 && global_select) { // space
407 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1]);
409 check_for_hash_change();
413 // enable the horrible horrible IE PNG hack
414 function ie_png_hack()
416 var vstr = navigator.appVersion.split("MSIE");
417 var v = parseFloat(vstr[1]);
418 if (v >= 5.5 && v < 7.0 && document.body.filters) {
419 var next = document.getElementById("next");
420 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); }\" />";
422 var previous = document.getElementById("previous");
423 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); }\" />";
425 var close = document.getElementById("close");
426 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);\" />";
430 function parse_image_num(default_value) {
431 var num = parseInt(window.location.hash.substr(1));
432 if (num >= 1 && num <= global_image_list.length) { // and then num != NaN
435 return default_value;
439 function check_for_hash_change() {
440 var num = parse_image_num(-1);
441 if (num != -1 && num != global_image_num) {
442 global_image_num = num;