/*
* pr0n can resize to any size we'd like, but we're much more likely
* to have this set of fixed-resolution screens cached, so to increase
- * performance, we round down to the closest fit and use that.
+ * performance, we round down to the closest fit and use that. This
+ * function is a pessimal estimate of what thumbnail size we can _always_
+ * fit on the screen -- it's right if and only if all images are 4:3
+ * (and landscape). If individual size information is available, use
+ * pick_image_size, below.
*/
-function reduce_to_fixed_width(size)
+var fixed_sizes = [
+ [ 2048, 1536 ],
+ [ 1920, 1440 ],
+ [ 1600, 1200 ],
+ [ 1400, 1050 ],
+ [ 1280, 960 ],
+ [ 1152, 864 ],
+ [ 1024, 768 ],
+ [ 800, 600 ],
+ [ 640, 480 ],
+ [ 512, 384 ],
+ [ 320, 256 ],
+ [ 240, 192 ],
+ [ 120, 96 ],
+ [ 80, 64 ]
+];
+function max_image_size(screen_size)
{
- var fixed_sizes = [
- [ 1280, 960 ],
- [ 1024, 768 ],
- [ 800, 600 ],
- [ 640, 480 ],
- [ 512, 384 ],
- [ 320, 256 ],
- [ 240, 192 ],
- [ 120, 96 ],
- [ 80, 64 ]
- ];
+ var i;
for (i = 0; i < fixed_sizes.length; ++i) {
- if (size[0] >= fixed_sizes[i][0] && size[1] >= fixed_sizes[i][1])
+ if (screen_size[0] >= fixed_sizes[i][0] && screen_size[1] >= fixed_sizes[i][1]) {
return fixed_sizes[i];
+ }
}
return [ 80, 64 ];
}
-
-function display_image(width, height, evt, filename, element_id)
+
+function pick_image_size(screen_size, image_size)
+{
+ var i;
+ for (i = 0; i < fixed_sizes.length; ++i) {
+ // this is a duplicate of pr0n's resizing code, hope for no floating-point
+ // inaccuracies :-)
+ var thumbxres = fixed_sizes[i][0];
+ var thumbyres = fixed_sizes[i][1];
+ var width = image_size[0];
+ var height = image_size[1];
+
+ if (!(thumbxres >= width && thumbyres >= height)) {
+ var sfh = width / thumbxres;
+ var sfv = height / thumbyres;
+ if (sfh > sfv) {
+ width /= sfh;
+ height /= sfh;
+ } else {
+ width /= sfv;
+ height /= sfv;
+ }
+ width = Math.floor(width);
+ height = Math.floor(height);
+ }
+
+ if (screen_size[0] >= width && screen_size[1] >= height) {
+ // be sure _not_ to return a reference
+ return [ fixed_sizes[i][0], fixed_sizes[i][1], width, height ];
+ }
+ }
+ return [ 80, 64 ];
+}
+
+function replace_image_element(url, element_id, parent_node)
{
- var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/" + filename;
var img = document.getElementById(element_id);
- if (img != null) {
- img.src = "";
+ if (img !== null) {
+ img.src = "data:";
img.parentNode.removeChild(img);
}
img.src = url;
}
+ parent_node.appendChild(img);
+ return img;
+}
+
+function display_image(width, height, evt, filename, element_id)
+{
+ var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/nobox/" + filename;
var main = document.getElementById("iehack");
- main.appendChild(img);
+ var img = replace_image_element(url, element_id, main);
+
+ if (global_infobox != 'nobox') {
+ var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/box/" + filename;
+ var boximg = replace_image_element(url, element_id + "_box", main);
+
+ boximg.style.position = "absolute";
+ boximg.style.left = "0px";
+ boximg.style.bottom = "-1px";
+ }
+
+ return img;
+}
+
+function display_image_num(num, element_id)
+{
+ var screen_size = find_width();
+ var adjusted_size;
+
+ if (global_image_list[num][2] == -1) {
+ // no size information, use our pessimal guess
+ adjusted_size = max_image_size(screen_size);
+ } else {
+ adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
+ }
+
+ var img = display_image(adjusted_size[0], adjusted_size[1], global_image_list[num][0], global_image_list[num][1], element_id);
+
+ if (element_id == "image") {
+ // we want to shrink the box as much as possible if we know the true
+ // size of the image
+ center_image(num);
+
+ // replace the anchor part (if any) with the image number
+ window.location.hash = "#" + (num+1);
+ }
return img;
}
-function prepare_preload(img, width, height, evt, filename)
+function prepare_preload(img, num)
{
// cancel any pending preload
var preload = document.getElementById("preload");
- if (preload != null) {
- preload.src = "";
+ if (preload !== null) {
+ preload.src = "data:";
preload.parentNode.removeChild(preload);
}
+
+ var preload_box = document.getElementById("preload_box");
+ if (preload_box !== null) {
+ preload_box.src = "data:";
+ preload_box.parentNode.removeChild(preload_box);
+ }
// grmf -- IE doesn't fire onload if the image was loaded from cache, so check for
// completeness first; should at least be _somewhat_ better
if (img.complete) {
- display_image(width, height, evt, filename, "preload");
+ display_image_num(num, "preload");
} else {
- img.onload = function() { display_image(width, height, evt, filename, "preload"); };
+ img.onload = function() { display_image_num(num, "preload"); };
}
}
-function relayout()
+function can_go_next()
{
- var size = find_width();
- var adjusted_size = reduce_to_fixed_width(size);
-
- var img = display_image(adjusted_size[0], adjusted_size[1], global_evt, global_image_list[global_image_num], "image");
- if (can_go_next()) {
- prepare_preload(img, adjusted_size[0], adjusted_size[1], global_evt, global_image_list[global_image_num + 1]);
- }
-
- // center the image on-screen
- var main = document.getElementById("main");
- main.style.position = "absolute";
- main.style.left = (size[0] - adjusted_size[0]) / 2 + "px";
- main.style.top = (size[1] - adjusted_size[1]) / 2 + "px";
- main.style.width = adjusted_size[0] + "px";
- main.style.height = adjusted_size[1] + "px";
- main.style.lineHeight = adjusted_size[1] + "px";
+ return (global_image_num < global_image_list.length - 1);
+}
- set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
- set_opacity("next", can_go_next() ? 0.7 : 0.1);
- set_opacity("close", 0.7);
+function can_go_previous()
+{
+ return (global_image_num > 0);
}
function set_opacity(id, amount)
}
}
-function can_go_previous()
+function center_image(num)
{
- return (global_image_num > 0);
+ var screen_size = find_width();
+ var width, height;
+
+ if (global_image_list[num][2] == -1) {
+ // no size information, use our pessimal guess
+ var adjusted_size = max_image_size(screen_size);
+ width = adjusted_size[0];
+ height = adjusted_size[1];
+ } else {
+ // use the exact information
+ var adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
+ width = adjusted_size[2];
+ height = adjusted_size[3];
+ }
+
+ // center the image on-screen
+ var main = document.getElementById("main");
+ main.style.position = "absolute";
+ main.style.left = (screen_size[0] - width) / 2 + "px";
+ main.style.top = (screen_size[1] - height) / 2 + "px";
+ main.style.width = width + "px";
+ main.style.height = height + "px";
+ main.style.lineHeight = height + "px";
}
-function go_previous()
+function relayout()
{
- if (!can_go_previous())
- return;
+ var img = display_image_num(global_image_num, "image");
+ if (can_go_next()) {
+ prepare_preload(img, global_image_num + 1);
+ }
- --global_image_num;
+ set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
+ set_opacity("next", can_go_next() ? 0.7 : 0.1);
+ set_opacity("close", 0.7);
+}
- var adjusted_size = reduce_to_fixed_width(find_width());
+function go_previous()
+{
+ if (!can_go_previous()) {
+ return;
+ }
- var img = display_image(adjusted_size[0], adjusted_size[1], global_evt, global_image_list[global_image_num], "image");
+ var img = display_image_num(--global_image_num, "image");
if (can_go_previous()) {
set_opacity("previous", 0.7);
- prepare_preload(img, adjusted_size[0], adjusted_size[1], global_evt, global_image_list[global_image_num - 1]);
+ prepare_preload(img, global_image_num - 1);
} else {
set_opacity("previous", 0.1);
}
set_opacity("next", can_go_next() ? 0.7 : 0.1);
}
-function can_go_next()
-{
- return (global_image_num < global_image_list.length - 1);
-}
-
function go_next()
{
- if (!can_go_next())
+ if (!can_go_next()) {
return;
+ }
- ++global_image_num;
-
- var adjusted_size = reduce_to_fixed_width(find_width());
-
- var img = display_image(adjusted_size[0], adjusted_size[1], global_evt, global_image_list[global_image_num], "image");
+ var img = display_image_num(++global_image_num, "image");
if (can_go_next()) {
set_opacity("next", 0.7);
- prepare_preload(img, adjusted_size[0], adjusted_size[1], global_evt, global_image_list[global_image_num + 1]);
+ prepare_preload(img, global_image_num + 1);
} else {
set_opacity("next", 0.1);
}
set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
}
+function do_close()
+{
+ window.location = global_return_url;
+}
+
+function draw_text(msg)
+{
+ // remove any text we might have left
+ var text = document.getElementById("text");
+ if (text !== null) {
+ text.parentNode.removeChild(text);
+ }
+
+ text = document.createElement("p");
+ text.id = "text";
+ text.style.position = "absolute";
+ text.style.color = "white";
+ text.style.lineHeight = "24px";
+ text.style.font = "24px verdana, arial, sans-serif";
+ text.innerHTML = msg;
+
+ var main = document.getElementById("main");
+ main.appendChild(text);
+
+ text.style.left = (main.clientWidth - text.clientWidth) / 2 + "px";
+ text.style.top = (main.clientHeight - text.clientHeight) / 2 + "px";
+}
+
+function fade_text(opacity)
+{
+ set_opacity("text", opacity);
+ if (opacity > 0.0) {
+ opacity -= 0.03;
+ if (opacity < 0.0) {
+ opacity = 0.0;
+ }
+ setTimeout("fade_text(" + opacity + ")", 30);
+ } else {
+ var text = document.getElementById("text");
+ if (text !== null) {
+ text.parentNode.removeChild(text);
+ }
+ }
+}
+
+function select_image(evt, filename)
+{
+ if (!req) {
+ return;
+ }
+
+ draw_text("Selecting " + filename + "...");
+
+ req.open("POST", "http://" + global_vhost + "/select", false);
+ req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
+ req.send("mode=single&event=" + evt + "&filename=" + filename);
+
+ setTimeout("fade_text(0.99)", 30);
+}
+
function key_down(which)
{
if (which == 39) { // right
}
} else if (which == 27) { // escape
set_opacity("close", 0.99);
+ } else {
+ check_for_hash_change();
}
}
set_opacity("close", 0.7);
do_close();
} else if (which == 32 && global_select) { // space
- select_image(global_image_list[global_image_num]);
- }
-}
-
-function select_image(filename)
-{
- if (!req)
- return;
-
- draw_text("Selecting " + filename + "...");
-
- req.open("POST", "http://" + global_vhost + "/select", false);
- req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
- req.send("mode=single&event=" + global_evt + "&filename=" + filename);
-
- setTimeout("fade_text(0.99)", 30);
-}
-
-function fade_text(opacity)
-{
- set_opacity("text", opacity);
- if (opacity > 0.0) {
- opacity -= 0.03;
- if (opacity < 0.0)
- opacity = 0.0;
- setTimeout("fade_text(" + opacity + ")", 30);
+ select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1]);
} else {
- var text = document.getElementById("text");
- if (text != null) {
- text.parentNode.removeChild(text);
- }
+ check_for_hash_change();
}
}
-function do_close()
-{
- window.location = global_return_url;
-}
-
-function draw_text(msg)
-{
- // remove any text we might have left
- var text = document.getElementById("text");
- if (text != null) {
- text.parentNode.removeChild(text);
- }
-
- text = document.createElement("p");
- text.id = "text";
- text.style.position = "absolute";
- text.style.color = "white";
- text.style.lineHeight = "24px";
- text.style.font = "24px verdana, arial, sans-serif";
- text.innerHTML = msg;
-
- var main = document.getElementById("main");
- main.appendChild(text);
-
- text.style.left = (main.clientWidth - text.clientWidth) / 2 + "px";
- text.style.top = (main.clientHeight - text.clientHeight) / 2 + "px";
-}
-
// enable the horrible horrible IE PNG hack
function ie_png_hack()
{
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);\" />";
}
}
+
+function parse_image_num(default_value) {
+ var num = parseInt(window.location.hash.substr(1));
+ if (num >= 1 && num <= global_image_list.length) { // and then num != NaN
+ return (num - 1);
+ } else {
+ return default_value;
+ }
+}
+
+function check_for_hash_change() {
+ var num = parse_image_num(-1);
+ if (num != -1 && num != global_image_num) {
+ global_image_num = num;
+ relayout();
+ }
+}
projects / pr0n / blobdiff