move webm js into a better place

2 files changed, 316 insertions, 0 deletions

diff --git a/js/expand-video.js b/js/expand-video.js
new file mode 100644
index 00000000..27438427
--- /dev/null
+++ b/js/expand-video.js
@@ -0,0 +1,235 @@
+/* This file is dedicated to the public domain; you may do as you wish with it. */
+/* Note: This code expects the global variable configRoot to be set. */
+
+function setupVideo(thumb, url) {
+    var video = null;
+    var videoContainer, videoHide;
+    var expanded = false;
+    var hovering = false;
+    var loop = true;
+    var loopControls = [document.createElement("span"), document.createElement("span")];
+    var fileInfo = thumb.parentNode.querySelector(".fileinfo");
+    var mouseDown = false;
+
+    function unexpand() {
+        if (expanded) {
+            expanded = false;
+            if (video.pause) video.pause();
+            videoContainer.style.display = "none";
+            thumb.style.display = "inline";
+            video.style.maxWidth = "inherit";
+            video.style.maxHeight = "inherit";
+        }
+    }
+
+    function unhover() {
+        if (hovering) {
+            hovering = false;
+            if (video.pause) video.pause();
+            videoContainer.style.display = "none";
+            video.style.maxWidth = "inherit";
+            video.style.maxHeight = "inherit";
+        }
+    }
+
+    // Create video element if does not exist yet
+    function getVideo() {
+        if (video == null) {
+            video = document.createElement("video");
+            video.src = url;
+            video.loop = loop;
+            video.innerText = "Your browser does not support HTML5 video.";
+
+            videoHide = document.createElement("img");
+            videoHide.src = configRoot + "cc/collapse.gif";
+            videoHide.alt = "[ - ]";
+            videoHide.title = "Collapse video";
+            videoHide.style.marginLeft = "-15px";
+            videoHide.style.cssFloat = "left";
+            videoHide.addEventListener("click", unexpand, false);
+
+            videoContainer = document.createElement("div");
+            videoContainer.style.paddingLeft = "15px";
+            videoContainer.style.display = "none";
+            videoContainer.appendChild(videoHide);
+            videoContainer.appendChild(video);
+            thumb.parentNode.insertBefore(videoContainer, thumb.nextSibling);
+
+            // Dragging to the left collapses the video
+            video.addEventListener("mousedown", function(e) {
+                if (e.button == 0) mouseDown = true;
+            }, false);
+            video.addEventListener("mouseup", function(e) {
+                if (e.button == 0) mouseDown = false;
+            }, false);
+            video.addEventListener("mouseenter", function(e) {
+                mouseDown = false;
+            }, false);
+            video.addEventListener("mouseout", function(e) {
+                if (mouseDown && e.clientX - video.getBoundingClientRect().left <= 0) {
+                    unexpand();
+                }
+                mouseDown = false;
+            }, false);
+        }
+    }
+
+    // Clicking on thumbnail expands video
+    thumb.addEventListener("click", function(e) {
+        if (setting("videoexpand") && !e.shiftKey && !e.ctrlKey && !e.altKey && !e.metaKey) {
+            getVideo();
+            expanded = true;
+            hovering = false;
+
+            video.style.position = "static";
+            video.style.pointerEvents = "inherit";
+            video.style.display = "inline";
+            videoHide.style.display = "inline";
+            videoContainer.style.display = "block";
+            videoContainer.style.position = "static";
+            thumb.style.display = "none";
+
+            video.muted = (setting("videovolume") == 0);
+            video.volume = setting("videovolume");
+            video.controls = true;
+            if (video.readyState == 0) {
+                video.addEventListener("loadedmetadata", expand2, false);
+            } else {
+                setTimeout(expand2, 0);
+            }
+            video.play();
+            e.preventDefault();
+        }
+    }, false);
+
+    function expand2() {
+        video.style.maxWidth = "100%";
+        video.style.maxHeight = window.innerHeight + "px";
+        var bottom = video.getBoundingClientRect().bottom;
+        if (bottom > window.innerHeight) {
+            window.scrollBy(0, bottom - window.innerHeight);
+        }
+        // work around Firefox volume control bug
+        video.volume = Math.max(setting("videovolume") - 0.001, 0);
+        video.volume = setting("videovolume");
+    }
+
+    // Hovering over thumbnail displays video
+    thumb.addEventListener("mouseover", function(e) {
+        if (setting("videohover")) {
+            getVideo();
+            expanded = false;
+            hovering = true;
+
+            var docRight = document.documentElement.getBoundingClientRect().right;
+            var thumbRight = thumb.querySelector("img, video").getBoundingClientRect().right;
+            var maxWidth = docRight - thumbRight - 20;
+            if (maxWidth < 250) maxWidth = 250;
+
+            video.style.position = "fixed";
+            video.style.right = "0px";
+            video.style.top = "0px";
+            var docRight = document.documentElement.getBoundingClientRect().right;
+            var thumbRight = thumb.querySelector("img, video").getBoundingClientRect().right;
+            video.style.maxWidth = maxWidth + "px";
+            video.style.maxHeight = "100%";
+            video.style.pointerEvents = "none";
+
+            video.style.display = "inline";
+            videoHide.style.display = "none";
+            videoContainer.style.display = "inline";
+            videoContainer.style.position = "fixed";
+
+            video.muted = (setting("videovolume") == 0);
+            video.volume = setting("videovolume");
+            video.controls = false;
+            video.play();
+        }
+    }, false);
+
+    thumb.addEventListener("mouseout", unhover, false);
+
+    // Scroll wheel on thumbnail adjusts default volume
+    thumb.addEventListener("wheel", function(e) {
+        if (setting("videohover")) {
+            var volume = setting("videovolume");
+            if (e.deltaY > 0) volume -= 0.1;
+            if (e.deltaY < 0) volume += 0.1;
+            if (volume < 0) volume = 0;
+            if (volume > 1) volume = 1;
+            if (video != null) {
+                video.muted = (volume == 0);
+                video.volume = volume;
+            }
+            changeSetting("videovolume", volume);
+            e.preventDefault();
+        }
+    }, false);
+
+    // [play once] vs [loop] controls
+    function setupLoopControl(i) {
+        loopControls[i].addEventListener("click", function(e) {
+            loop = (i != 0);
+            thumb.href = thumb.href.replace(/([\?&])loop=\d+/, "$1loop=" + i);
+            if (video != null) {
+                video.loop = loop;
+                if (loop && video.currentTime >= video.duration) {
+                    video.currentTime = 0;
+                }
+            }
+            loopControls[i].style.fontWeight = "bold";
+            loopControls[1-i].style.fontWeight = "inherit";
+        }, false);
+    }
+
+    loopControls[0].textContent = "[play once]";
+    loopControls[1].textContent = "[loop]";
+    loopControls[1].style.fontWeight = "bold";
+    for (var i = 0; i < 2; i++) {
+        setupLoopControl(i);
+        loopControls[i].style.whiteSpace = "nowrap";
+        fileInfo.appendChild(document.createTextNode(" "));
+        fileInfo.appendChild(loopControls[i]);
+    }
+}
+
+function setupVideosIn(element) {
+    var thumbs = element.querySelectorAll("a.file");
+    for (var i = 0; i < thumbs.length; i++) {
+        if (/\.webm$/.test(thumbs[i].pathname)) {
+            setupVideo(thumbs[i], thumbs[i].href);
+        } else {
+            var m = thumbs[i].search.match(/\bv=([^&]*)/);
+            if (m != null) {
+                var url = decodeURIComponent(m[1]);
+                if (/\.webm$/.test(url)) setupVideo(thumbs[i], url);
+            }
+        }
+    }
+}
+
+if (window.addEventListener) window.addEventListener("load", function(e) {
+    // Insert menu from settings.js
+    if (typeof settingsMenu != "undefined") document.body.insertBefore(settingsMenu, document.body.firstChild);
+
+    // Setup Javascript events for videos in document now
+    setupVideosIn(document);
+
+    // Setup Javascript events for videos added by updater
+    if (window.MutationObserver) {
+        var observer = new MutationObserver(function(mutations) {
+            for (var i = 0; i < mutations.length; i++) {
+                var additions = mutations[i].addedNodes;
+                if (additions == null) continue;
+                for (var j = 0; j < additions.length; j++) {
+                    var node = additions[j];
+                    if (node.nodeType == 1) {
+                        setupVideosIn(node);
+                    }
+                }
+            }
+        });
+        observer.observe(document.body, {childList: true, subtree: true});
+    }
+}, false);
+
diff --git a/js/webm-settings.js b/js/webm-settings.js
new file mode 100644
index 00000000..f67e42d6
--- /dev/null
+++ b/js/webm-settings.js
@@ -0,0 +1,81 @@
+/* This file is dedicated to the public domain; you may do as you wish with it. */
+
+// Default settings
+var defaultSettings = {
+    "videoexpand": true,
+    "videohover": false,
+    "videovolume": 1.0
+};
+
+// Non-persistent settings for when localStorage is absent/disabled
+var tempSettings = {};
+
+// Scripts obtain settings by calling this function
+function setting(name) {
+    if (localStorage) {
+        if (localStorage[name] === undefined) return defaultSettings[name];
+        return JSON.parse(localStorage[name]);
+    } else {
+        if (tempSettings[name] === undefined) return defaultSettings[name];
+        return tempSettings[name];
+    }
+}
+
+// Settings should be changed with this function
+function changeSetting(name, value) {
+    if (localStorage) {
+        localStorage[name] = JSON.stringify(value);
+    } else {
+        tempSettings[name] = value;
+    }
+}
+
+// Create settings menu
+var settingsMenu = document.createElement("span");
+settingsMenu.className = "settings";
+settingsMenu.innerHTML = '<span>[WebM Settings]</span>'
+    + '<div style="display: none; text-align: left; position: absolute; right: 0px; margin-left: -999em; margin-top: -1px; padding-top: 1px;">'
+    + '<label><input type="checkbox" name="videoexpand">Expand videos inline</label><br>'
+    + '<label><input type="checkbox" name="videohover">Play videos on hover</label><br>'
+    + '<label><input type="range" name="videovolume" min="0" max="1" step="0.01" style="width: 4em; height: 1ex; vertical-align: middle; margin: 0px;">Default volume</label><br>'
+    + '</div>';
+
+function refreshSettings() {
+    var settingsItems = settingsMenu.getElementsByTagName("input");
+    for (var i = 0; i < settingsItems.length; i++) {
+        var control = settingsItems[i];
+        if (control.type == "checkbox") {
+            control.checked = setting(control.name);
+        } else if (control.type == "range") {
+            control.value = setting(control.name);
+        }
+    }
+}
+
+function setupControl(control) {
+    if (control.addEventListener) control.addEventListener("change", function(e) {
+        if (control.type == "checkbox") {
+            changeSetting(control.name, control.checked);
+        } else if (control.type == "range") {
+            changeSetting(control.name, control.value);
+        }
+    }, false);
+}
+
+refreshSettings();
+var settingsItems = settingsMenu.getElementsByTagName("input");
+for (var i = 0; i < settingsItems.length; i++) {
+    setupControl(settingsItems[i]);
+}
+
+if (settingsMenu.addEventListener) {
+    settingsMenu.addEventListener("mouseover", function(e) {
+        refreshSettings();
+        settingsMenu.getElementsByTagName("span")[0].style.fontWeight = "bold";
+        settingsMenu.getElementsByTagName("div")[0].style.display = "block";
+    }, false);
+    settingsMenu.addEventListener("mouseout", function(e) {
+        settingsMenu.getElementsByTagName("span")[0].style.fontWeight = "normal";
+        settingsMenu.getElementsByTagName("div")[0].style.display = "none";
+    }, false);
+}