Added hotkey support to viewerbase

LesionTracker/client/components/viewer.js

@@ -17,13 +17,15 @@ function resizeViewports() {
 }
 
 Template.viewer.onCreated(function() {
+    enableHotkeys();
+
     var self = this;
 
     var firstMeasurementsActivated = false;
 
     log.info("viewer onCreated");
 
-    OHIF = {
+    OHIF = OHIF || {
         viewer: {}
     };
 

Packages/viewerbase/client/compatibility/jquery.hotkeys.js

@@ -0,0 +1,204 @@
+/*jslint browser: true*/
+/*jslint jquery: true*/
+
+/*
+ * jQuery Hotkeys Plugin
+ * Copyright 2010, John Resig
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ *
+ * Based upon the plugin by Tzury Bar Yochay:
+ * https://github.com/tzuryby/jquery.hotkeys
+ *
+ * Original idea by:
+ * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
+ */
+
+/*
+ * One small change is: now keys are passed by object { keys: '...' }
+ * Might be useful, when you want to pass some other data to your handler
+ */
+
+(function(jQuery) {
+
+  jQuery.hotkeys = {
+    version: "0.8",
+
+    specialKeys: {
+      8: "backspace",
+      9: "tab",
+      10: "return",
+      13: "return",
+      16: "shift",
+      17: "ctrl",
+      18: "alt",
+      19: "pause",
+      20: "capslock",
+      27: "esc",
+      32: "space",
+      33: "pageup",
+      34: "pagedown",
+      35: "end",
+      36: "home",
+      37: "left",
+      38: "up",
+      39: "right",
+      40: "down",
+      45: "insert",
+      46: "del",
+      59: ";",
+      61: "=",
+      96: "0",
+      97: "1",
+      98: "2",
+      99: "3",
+      100: "4",
+      101: "5",
+      102: "6",
+      103: "7",
+      104: "8",
+      105: "9",
+      106: "*",
+      107: "+",
+      109: "-",
+      110: ".",
+      111: "/",
+      112: "f1",
+      113: "f2",
+      114: "f3",
+      115: "f4",
+      116: "f5",
+      117: "f6",
+      118: "f7",
+      119: "f8",
+      120: "f9",
+      121: "f10",
+      122: "f11",
+      123: "f12",
+      144: "numlock",
+      145: "scroll",
+      173: "-",
+      186: ";",
+      187: "=",
+      188: ",",
+      189: "-",
+      190: ".",
+      191: "/",
+      192: "`",
+      219: "[",
+      220: "\\",
+      221: "]",
+      222: "'"
+    },
+
+    shiftNums: {
+      "`": "~",
+      "1": "!",
+      "2": "@",
+      "3": "#",
+      "4": "$",
+      "5": "%",
+      "6": "^",
+      "7": "&",
+      "8": "*",
+      "9": "(",
+      "0": ")",
+      "-": "_",
+      "=": "+",
+      ";": ": ",
+      "'": "\"",
+      ",": "<",
+      ".": ">",
+      "/": "?",
+      "\\": "|"
+    },
+
+    // excludes: button, checkbox, file, hidden, image, password, radio, reset, search, submit, url
+    textAcceptingInputTypes: [
+      "text", "password", "number", "email", "url", "range", "date", "month", "week", "time", "datetime",
+      "datetime-local", "search", "color", "tel"],
+
+    // default input types not to bind to unless bound directly
+    textInputTypes: /textarea|input|select/i,
+
+    options: {
+      filterInputAcceptingElements: true,
+      filterTextInputs: true,
+      filterContentEditable: true
+    }
+  };
+
+  function keyHandler(handleObj) {
+    if (typeof handleObj.data === "string") {
+      handleObj.data = {
+        keys: handleObj.data
+      };
+    }
+
+    // Only care when a possible input has been specified
+    if (!handleObj.data || !handleObj.data.keys || typeof handleObj.data.keys !== "string") {
+      return;
+    }
+
+    var origHandler = handleObj.handler,
+      keys = handleObj.data.keys.toLowerCase().split(" ");
+
+    handleObj.handler = function(event) {
+      //      Don't fire in text-accepting inputs that we didn't directly bind to
+      if (this !== event.target &&
+        (jQuery.hotkeys.options.filterInputAcceptingElements &&
+          jQuery.hotkeys.textInputTypes.test(event.target.nodeName) ||
+          (jQuery.hotkeys.options.filterContentEditable && jQuery(event.target).attr('contenteditable')) ||
+          (jQuery.hotkeys.options.filterTextInputs &&
+            jQuery.inArray(event.target.type, jQuery.hotkeys.textAcceptingInputTypes) > -1))) {
+        return;
+      }
+
+      var special = event.type !== "keypress" && jQuery.hotkeys.specialKeys[event.which],
+        character = String.fromCharCode(event.which).toLowerCase(),
+        modif = "",
+        possible = {};
+
+      jQuery.each(["alt", "ctrl", "shift"], function(index, specialKey) {
+
+        if (event[specialKey + 'Key'] && special !== specialKey) {
+          modif += specialKey + '+';
+        }
+      });
+
+      // metaKey is triggered off ctrlKey erronously
+      if (event.metaKey && !event.ctrlKey && special !== "meta") {
+        modif += "meta+";
+      }
+
+      if (event.metaKey && special !== "meta" && modif.indexOf("alt+ctrl+shift+") > -1) {
+        modif = modif.replace("alt+ctrl+shift+", "hyper+");
+      }
+
+      if (special) {
+        possible[modif + special] = true;
+      }
+      else {
+        possible[modif + character] = true;
+        possible[modif + jQuery.hotkeys.shiftNums[character]] = true;
+
+        // "$" can be triggered as "Shift+4" or "Shift+$" or just "$"
+        if (modif === "shift+") {
+          possible[jQuery.hotkeys.shiftNums[character]] = true;
+        }
+      }
+
+      for (var i = 0, l = keys.length; i < l; i++) {
+        if (possible[keys[i]]) {
+          return origHandler.apply(this, arguments);
+        }
+      }
+    };
+  }
+
+  jQuery.each(["keydown", "keyup", "keypress"], function() {
+    jQuery.event.special[this] = {
+      add: keyHandler
+    };
+  });
+
+})(jQuery || this.jQuery || window.jQuery);

Packages/viewerbase/client/components/viewer/imageViewerViewport/imageViewerViewport.js

@@ -154,7 +154,7 @@ function loadSeriesIntoViewport(data, templateData) {
         // Use the tool manager to enable the currently active tool for this
         // newly rendered element
         var activeTool = toolManager.getActiveTool();
-        toolManager.setActiveTool(activeTool, element);
+        toolManager.setActiveTool(activeTool, [element]);
 
         // Define a function to run whenever the Cornerstone viewport is rendered
         // (e.g. following a change of window or zoom)
@@ -527,14 +527,6 @@ Template.imageViewerViewport.onDestroyed(function() {
 Template.imageViewerViewport.events({
     'ActivateViewport .imageViewerViewport': function(e) {
         log.info("imageViewerViewport ActivateViewport");
-
-        // When an ActivateViewport event is fired, update the Meteor Session
-        // with the viewport index that it was fired from.
-        Session.set("activeViewport", e.viewportIndex);
-
-        // Add the 'active' class to the parent container to highlight the active viewport
-        $('#imageViewerViewports .viewportContainer').removeClass('active');
-
         setActiveViewport(e.currentTarget);
     }
 });

Packages/viewerbase/client/components/viewer/playClipButton/playClipButton.js

@@ -1,4 +1,13 @@
 toggleCinePlay = function(element) {
+    if (!element) {
+        var activeViewport = Session.get('activeViewport');
+        element = $('.imageViewerViewport').get(activeViewport);
+    }
+
+    if (!element) {
+        return;
+    }
+
     var viewportIndex = $('.imageViewerViewport').index(element);
     var isPlaying = OHIF.viewer.isPlaying[viewportIndex] || false;
     if (isPlaying === true) {
@@ -20,8 +29,6 @@ Template.playClipButton.helpers({
 
 Template.playClipButton.events({
     'click #playClip': function() {
-        var activeViewport = Session.get('activeViewport');
-        var element = $('.imageViewerViewport').get(activeViewport);
-        toggleCinePlay(element);
+        toggleCinePlay();
     }
 });

Packages/viewerbase/lib/WLPresets.js

@@ -0,0 +1,21 @@
+applyWLPreset = function(presetName, element) {
+    var viewport = cornerstone.getViewport(element);
+
+    if (presetName === 'Default') {
+        var enabledElement = cornerstone.getEnabledElement(element);
+        viewport.voi.windowWidth = enabledElement.image.windowWidth;
+        viewport.voi.windowCenter = enabledElement.image.windowCenter;
+    } else {
+        var preset = OHIF.viewer.wlPresets[presetName];
+        viewport.voi.windowWidth = preset.ww;
+        viewport.voi.windowCenter = preset.wc;
+    }
+
+    // Update the viewport
+    cornerstone.setViewport(element, viewport);
+};
+
+applyWLPresetToActiveElement = function(presetName) {
+    var element = getActiveViewportElement();
+    applyWLPreset(presetName, element);
+};

Packages/viewerbase/lib/enableHotkeys.js

@@ -0,0 +1,574 @@
+OHIF = window.OHIF || {};
+
+Meteor.startup(function() {
+
+    if (!OHIF.viewer) {
+        OHIF.viewer = {};
+    }
+
+    OHIF.viewer.defaultHotkeys = {
+        defaultTool: "ESC",
+        angle: "A",
+        stackScroll: "S",
+        wwwcRegion: "R",
+        pan: "P",
+        magnify: "M",
+        length: "L",
+        scrollDown: "DOWN",
+        scrollUp: "UP",
+        nextPanel: "RIGHT",
+        previousPanel: "LEFT",
+        invert: "I",
+        flipV: "V",
+        flipH: "H",
+        wwwc: "W",
+        annotate: "T",
+        cineDialog: "C",
+        cinePlay: "SPACE",
+        rotateR: "F",
+        rotateL: "G",
+        toggleTools: 'TAB',
+        toggleOverlayTags: 'SHIFT',
+        WLPresetABD: ["NUMPAD1", "1"],
+        WLPresetBone: ["NUMPAD2", "2"],
+        WLPresetBrain: ["NUMPAD3", "3"],
+        WLPresetLiver: ["NUMPAD4", "4"],
+        WLPresetLung: ["NUMPAD5", "5"],
+        WLPresetMediastinum: ["NUMPAD6", "6"],
+        WLPresetMRSoftTissue: ["NUMPAD7", "7"],
+        WLPresetMRSpine: ["NUMPAD8", "8"],
+        WLPresetSubdural: ["NUMPAD9", "9"]
+    };
+    
+    // For now
+    OHIF.viewer.hotkeys = OHIF.viewer.defaultHotkeys;
+
+    OHIF.viewer.defaultWLPresets = {
+        'ABD' : {wc : 40, ww : 400},
+        'Bone' : {wc: 450, ww : 1800},
+        'Brain' : {wc : 36, ww : 90},
+        'Liver' : {wc : 40, ww : 250},
+        'Lung' : {wc : -400, ww : 1600},
+        'Mediastinum' : {wc : 50, ww : 450},
+        'MRSoftTissue' : {wc : 600, ww : 1200},
+        'MRSpine' : {wc : 400, ww : 600},
+        'Subdural' : {wc : 75, ww : 150}
+    };
+
+    // For now
+    OHIF.viewer.wlPresets = OHIF.viewer.defaultWLPresets;
+
+    OHIF.viewer.globals = {};
+    OHIF.viewer.globals.keyboardMap = [
+      "", // [0]
+      "", // [1]
+      "", // [2]
+      "CANCEL", // [3]
+      "", // [4]
+      "", // [5]
+      "HELP", // [6]
+      "", // [7]
+      "BACK_SPACE", // [8]
+      "TAB", // [9]
+      "", // [10]
+      "", // [11]
+      "CLEAR", // [12]
+      "ENTER", // [13]
+      "ENTER_SPECIAL", // [14]
+      "", // [15]
+      "SHIFT", // [16]
+      "CONTROL", // [17]
+      "ALT", // [18]
+      "PAUSE", // [19]
+      "CAPS_LOCK", // [20]
+      "KANA", // [21]
+      "EISU", // [22]
+      "JUNJA", // [23]
+      "FINAL", // [24]
+      "HANJA", // [25]
+      "", // [26]
+      "ESCAPE", // [27]
+      "CONVERT", // [28]
+      "NONCONVERT", // [29]
+      "ACCEPT", // [30]
+      "MODECHANGE", // [31]
+      "SPACE", // [32]
+      "PAGE_UP", // [33]
+      "PAGE_DOWN", // [34]
+      "END", // [35]
+      "HOME", // [36]
+      "LEFT", // [37]
+      "UP", // [38]
+      "RIGHT", // [39]
+      "DOWN", // [40]
+      "SELECT", // [41]
+      "PRINT", // [42]
+      "EXECUTE", // [43]
+      "PRINTSCREEN", // [44]
+      "INSERT", // [45]
+      "DELETE", // [46]
+      "", // [47]
+      "0", // [48]
+      "1", // [49]
+      "2", // [50]
+      "3", // [51]
+      "4", // [52]
+      "5", // [53]
+      "6", // [54]
+      "7", // [55]
+      "8", // [56]
+      "9", // [57]
+      "COLON", // [58]
+      "SEMICOLON", // [59]
+      "LESS_THAN", // [60]
+      "EQUALS", // [61]
+      "GREATER_THAN", // [62]
+      "QUESTION_MARK", // [63]
+      "AT", // [64]
+      "A", // [65]
+      "B", // [66]
+      "C", // [67]
+      "D", // [68]
+      "E", // [69]
+      "F", // [70]
+      "G", // [71]
+      "H", // [72]
+      "I", // [73]
+      "J", // [74]
+      "K", // [75]
+      "L", // [76]
+      "M", // [77]
+      "N", // [78]
+      "O", // [79]
+      "P", // [80]
+      "Q", // [81]
+      "R", // [82]
+      "S", // [83]
+      "T", // [84]
+      "U", // [85]
+      "V", // [86]
+      "W", // [87]
+      "X", // [88]
+      "Y", // [89]
+      "Z", // [90]
+      "WIN", // [91]
+      "", // [92]
+      "CONTEXT_MENU", // [93]
+      "", // [94]
+      "SLEEP", // [95]
+      "NUMPAD0", // [96]
+      "NUMPAD1", // [97]
+      "NUMPAD2", // [98]
+      "NUMPAD3", // [99]
+      "NUMPAD4", // [100]
+      "NUMPAD5", // [101]
+      "NUMPAD6", // [102]
+      "NUMPAD7", // [103]
+      "NUMPAD8", // [104]
+      "NUMPAD9", // [105]
+      "MULTIPLY", // [106]
+      "ADD", // [107]
+      "SEPARATOR", // [108]
+      "SUBTRACT", // [109]
+      "DECIMAL", // [110]
+      "DIVIDE", // [111]
+      "F1", // [112]
+      "F2", // [113]
+      "F3", // [114]
+      "F4", // [115]
+      "F5", // [116]
+      "F6", // [117]
+      "F7", // [118]
+      "F8", // [119]
+      "F9", // [120]
+      "F10", // [121]
+      "F11", // [122]
+      "F12", // [123]
+      "F13", // [124]
+      "F14", // [125]
+      "F15", // [126]
+      "F16", // [127]
+      "F17", // [128]
+      "F18", // [129]
+      "F19", // [130]
+      "F20", // [131]
+      "F21", // [132]
+      "F22", // [133]
+      "F23", // [134]
+      "F24", // [135]
+      "", // [136]
+      "", // [137]
+      "", // [138]
+      "", // [139]
+      "", // [140]
+      "", // [141]
+      "", // [142]
+      "", // [143]
+      "NUM_LOCK", // [144]
+      "SCROLL_LOCK", // [145]
+      "WIN_OEM_FJ_JISHO", // [146]
+      "WIN_OEM_FJ_MASSHOU", // [147]
+      "WIN_OEM_FJ_TOUROKU", // [148]
+      "WIN_OEM_FJ_LOYA", // [149]
+      "WIN_OEM_FJ_ROYA", // [150]
+      "", // [151]
+      "", // [152]
+      "", // [153]
+      "", // [154]
+      "", // [155]
+      "", // [156]
+      "", // [157]
+      "", // [158]
+      "", // [159]
+      "CIRCUMFLEX", // [160]
+      "EXCLAMATION", // [161]
+      "DOUBLE_QUOTE", // [162]
+      "HASH", // [163]
+      "DOLLAR", // [164]
+      "PERCENT", // [165]
+      "AMPERSAND", // [166]
+      "UNDERSCORE", // [167]
+      "OPEN_PAREN", // [168]
+      "CLOSE_PAREN", // [169]
+      "ASTERISK", // [170]
+      "PLUS", // [171]
+      "PIPE", // [172]
+      "HYPHEN_MINUS", // [173]
+      "OPEN_CURLY_BRACKET", // [174]
+      "CLOSE_CURLY_BRACKET", // [175]
+      "TILDE", // [176]
+      "", // [177]
+      "", // [178]
+      "", // [179]
+      "", // [180]
+      "VOLUME_MUTE", // [181]
+      "VOLUME_DOWN", // [182]
+      "VOLUME_UP", // [183]
+      "", // [184]
+      "", // [185]
+      "SEMICOLON", // [186]
+      "EQUALS", // [187]
+      "COMMA", // [188]
+      "MINUS", // [189]
+      "PERIOD", // [190]
+      "SLASH", // [191]
+      "BACK_QUOTE", // [192]
+      "", // [193]
+      "", // [194]
+      "", // [195]
+      "", // [196]
+      "", // [197]
+      "", // [198]
+      "", // [199]
+      "", // [200]
+      "", // [201]
+      "", // [202]
+      "", // [203]
+      "", // [204]
+      "", // [205]
+      "", // [206]
+      "", // [207]
+      "", // [208]
+      "", // [209]
+      "", // [210]
+      "", // [211]
+      "", // [212]
+      "", // [213]
+      "", // [214]
+      "", // [215]
+      "", // [216]
+      "", // [217]
+      "", // [218]
+      "OPEN_BRACKET", // [219]
+      "BACK_SLASH", // [220]
+      "CLOSE_BRACKET", // [221]
+      "QUOTE", // [222]
+      "", // [223]
+      "META", // [224]
+      "ALTGR", // [225]
+      "", // [226]
+      "WIN_ICO_HELP", // [227]
+      "WIN_ICO_00", // [228]
+      "", // [229]
+      "WIN_ICO_CLEAR", // [230]
+      "", // [231]
+      "", // [232]
+      "WIN_OEM_RESET", // [233]
+      "WIN_OEM_JUMP", // [234]
+      "WIN_OEM_PA1", // [235]
+      "WIN_OEM_PA2", // [236]
+      "WIN_OEM_PA3", // [237]
+      "WIN_OEM_WSCTRL", // [238]
+      "WIN_OEM_CUSEL", // [239]
+      "WIN_OEM_ATTN", // [240]
+      "WIN_OEM_FINISH", // [241]
+      "WIN_OEM_COPY", // [242]
+      "WIN_OEM_AUTO", // [243]
+      "WIN_OEM_ENLW", // [244]
+      "WIN_OEM_BACKTAB", // [245]
+      "ATTN", // [246]
+      "CRSEL", // [247]
+      "EXSEL", // [248]
+      "EREOF", // [249]
+      "PLAY", // [250]
+      "ZOOM", // [251]
+      "", // [252]
+      "PA1", // [253]
+      "WIN_OEM_CLEAR", // [254]
+      "" // [255]
+    ];
+
+    OHIF.viewer.hotkeyFunctions = {
+        wwwc: function() {
+            toolManager.setActiveTool("wwwc");
+        },
+        angle: function() {
+            toolManager.setActiveTool("angle");
+        },
+        dragProbe: function() {
+            toolManager.setActiveTool("dragProbe");
+        },
+        ellipticalRoi: function() {
+            toolManager.setActiveTool("ellipticalRoi");
+        },
+        magnify: function() {
+            toolManager.setActiveTool("magnify");
+        },
+        annotate: function() {
+            toolManager.setActiveTool("annotate");
+        },
+        stackScroll: function() {
+            toolManager.setActiveTool("stackScroll");
+        },
+        pan: function() {
+            toolManager.setActiveTool("pan");
+        },
+        length: function() {
+            toolManager.setActiveTool("length");
+        },
+        spine: function() {
+            toolManager.setActiveTool("spine");
+        },
+        wwwcRegion: function() {
+            toolManager.setActiveTool("wwwcRegion");
+        },
+        zoomIn: function () {
+            var button = document.getElementById("zoomIn");
+            flashButton(button);
+            zoomIn();
+        },
+        zoomOut: function () {
+            var button = document.getElementById("zoomOut");
+            flashButton(button);
+            zoomOut();
+        },
+        zoomToFit: function () {
+            var button = document.getElementById("zoomToFit");
+            flashButton(button);
+            zoomToFit();
+        },
+        scrollDown: function() {
+            var container = $('.viewportContainer.active');
+            var button = container.find('#nextImage').get(0);
+
+            if (!container.find('.imageViewerViewport').hasClass('empty')) {
+                flashButton(button);
+                switchToImageRelative(1);
+            }
+        },
+        scrollFirstImage: function() {
+            var container = $('.viewportContainer.active');
+            if (!container.find('.imageViewerViewport').hasClass('empty')) {
+                switchToImageByIndex(0);
+            }
+        },
+        scrollLastImage: function() {
+            var container = $('.viewportContainer.active');
+            if (!container.find('.imageViewerViewport').hasClass('empty')) {
+                switchToImageByIndex(-1);
+            }
+        },
+        scrollUp: function() {
+            var container = $('.viewportContainer.active');
+            if (!container.find('.imageViewerViewport').hasClass('empty')) {
+                var button = container.find('#prevImage').get(0);
+                flashButton(button);
+                switchToImageRelative(-1);
+            }
+        },
+        nextPanel: function() {
+            nextActivePanel();
+        },
+        previousPanel: function() {
+            previousActivePanel();
+        },
+        invert: function() {
+            var button = document.getElementById("invert");
+            flashButton(button);
+            invert();
+        },
+        flipV: function() {
+            var button = document.getElementById("flipV");
+            flashButton(button);
+            flipV();
+        },
+        flipH: function() {
+            var button = document.getElementById("flipH");
+            flashButton(button);
+            flipH();
+        },
+        rotateR: function() {
+            var button = document.getElementById("rotateR");
+            flashButton(button);
+            rotateR();
+        },
+        rotateL: function() {
+            var button = document.getElementById("rotateL");
+            flashButton(button);
+            rotateL();
+        },
+        cinePlay: function() {
+            toggleCinePlay();
+        },
+        defaultTool: function() {
+            var tool = toolManager.getDefaultTool();
+            toolManager.setActiveTool(tool);
+        },
+        toggleTools: function() {
+            //TODO= Write this function in toolManager?
+            console.log("Show/hide all tools");
+        },
+        toggleOverlayTags: function() {
+            var dicomTags = $('.imageViewerViewportOverlay .dicomTag');
+            if (dicomTags.eq(0).css('display') === 'none') {
+                dicomTags.show();
+            } else {
+                dicomTags.hide();
+            }
+        }
+    };
+});
+
+// Define a jQuery reverse function
+$.fn.reverse = [].reverse;
+
+function previousActivePanel() {
+    log.info('nextActivePanel');
+    var currentIndex = Session.get('activeViewport');
+    currentIndex--;
+
+    var viewports = $('.imageViewerViewport');
+    var numViewports = viewports.length;
+    if (currentIndex < 0) {
+        currentIndex = numViewports - 1;
+    }
+
+    var element = viewports.get(currentIndex);
+    if (!element) {
+        return;
+    }
+
+    setActiveViewport(element);
+}
+
+
+function nextActivePanel() {
+    log.info('nextActivePanel');
+    var currentIndex = Session.get('activeViewport');
+    currentIndex++;
+
+    var viewports = $('.imageViewerViewport');
+    var numViewports = viewports.length;
+    if (currentIndex >= numViewports) {
+        currentIndex = 0;
+    }
+
+    var element = viewports.get(currentIndex);
+    if (!element) {
+        return;
+    }
+
+    setActiveViewport(element);
+}
+
+function flashButton(button) {
+    if (!button) {
+        return;
+    }
+
+    button.classList.add('active');
+    setTimeout(function () {
+        button.classList.remove('active');
+    }, 100);
+}
+
+function setActiveViewportContainer(container) {
+    if (!container) {
+        return;
+    }
+
+    var container = $(container);
+    container.addClass('active');
+
+    var element = container.find(".imageViewerViewport").get(0);
+    if (!element) {
+        return;
+    }
+
+    var viewportIndex = $('.imageViewerViewport').index(element);
+    Session.set
+
+    // Finally, enable stack prefetching and hide the reference lines from
+    // the newly activated viewport
+    enablePrefetchOnElement(element);
+    displayReferenceLines(element);
+}
+
+function bindHotkey(hotkey, task) {
+    var hotkeyFunctions = OHIF.viewer.hotkeyFunctions;
+
+    // Only bind defined, non-empty HotKeys
+    if (!hotkey || hotkey === "") {
+        return;
+    }
+
+    var fn;
+    if (task.indexOf("WLPreset") > -1) {
+        var presetName = task.replace("WLPreset", "");
+        fn = function() {
+            applyWLPresetToActiveElement(presetName);
+        };
+    } else {
+        fn = hotkeyFunctions[task];
+    }
+
+    if (!fn) {
+        return;
+    }
+
+    var hotKeyForBinding = hotkey.toLowerCase();
+
+    $(document).bind('keydown', hotKeyForBinding, fn);
+}
+
+enableHotkeys = function() {
+    var viewerHotkeys = OHIF.viewer.hotkeys;
+
+    $(document).unbind('keydown');
+
+    Object.keys(viewerHotkeys).forEach(function(task) {
+        var taskHotkeys = viewerHotkeys[task];
+        if (!taskHotkeys || !taskHotkeys.length) {
+            return;
+        }
+
+        if (taskHotkeys.constructor === Array) {
+            taskHotkeys.forEach(function(hotkey) {
+                bindHotkey(hotkey, task);
+            });
+        } else {
+            // taskHotkeys represents a single key
+            bindHotkey(taskHotkeys, task);
+        }
+    });
+};

Packages/viewerbase/lib/setActiveViewport.js

@@ -0,0 +1,20 @@
+setActiveViewport = function(element) {
+    if (!element) {
+        return;
+    }
+
+    var viewportIndex = $('.imageViewerViewport').index(element);
+
+    // When an ActivateViewport event is fired, update the Meteor Session
+    // with the viewport index that it was fired from.
+    Session.set("activeViewport", viewportIndex);
+
+    // Add the 'active' class to the parent container to highlight the active viewport
+    $('#imageViewerViewports .viewportContainer').removeClass('active');
+    $(element).parents('.viewportContainer').addClass('active');
+
+    // Finally, enable stack prefetching and hide the reference lines from
+    // the newly activated viewport
+    enablePrefetchOnElement(element);
+    displayReferenceLines(element);
+};

Packages/viewerbase/lib/switchToImageByIndex.js

@@ -0,0 +1,13 @@
+/**
+ * This function switches to an image given an element and the index of the image in the current stack
+ * Note: Negative indexing is supported:
+ * 
+ *      e.g. switchToImageByIndex(element, -1) to switch to the last image of the stack
+ * 
+ * @param element
+ * @param {number} [newImageIdIndex] The image index in the stack to switch to.
+ */
+switchToImageByIndex = function(newImageIdIndex) {
+    var element = getActiveViewportElement();
+    cornerstoneTools.scrollToIndex(element, newImageIdIndex);
+};

Packages/viewerbase/lib/switchToImageRelative.js

@@ -0,0 +1,13 @@
+/**
+ * This function switches to an image given an element and 
+ * the relative distance from the current image in the stack
+ * 
+ *      e.g. switchToImageRelative(element, -1) to switch to currentImageIdIndex - 1
+ * 
+ * @param element
+ * @param {number} [distanceFromCurrentIndex] The image index in the stack to switch to.
+ */
+switchToImageRelative = function(distanceFromCurrentIndex) {
+    var element = getActiveViewportElement();
+    cornerstoneTools.scroll(element, distanceFromCurrentIndex);
+};

Packages/viewerbase/lib/toolManager.js

@@ -1,4 +1,5 @@
-var activeTool;
+var activeTool = "wwwc";
+var defaultTool = "wwwc";
 
 var alwaysEnabledTools = [];
 
@@ -147,9 +148,15 @@ toolManager = {
             toolManager.init();
         }
 
+        if (!elements || !elements.length) {
+            elements = $('.imageViewerViewport');
+        }
+
         $('#toolbar .btn-group button').removeClass('active');
         var toolButton = document.getElementById(tool);
-        toolButton.classList.add('active');
+        if (toolButton) {
+            toolButton.classList.add('active');
+        }
 
         // Otherwise, set the active tool for all viewport elements
         $(elements).each(function(index, element) {
@@ -159,14 +166,14 @@ toolManager = {
     },
     getActiveTool: function() {
         if (!activeTool) {
-            activeTool = OHIF.viewer.defaultTool;
+            activeTool = defaultTool;
         }
         return activeTool;
     },
     setDefaultTool: function(tool) {
-        OHIF.viewer.defaultTool = tool;
+        defaultTool = tool;
     },
     getDefaultTool: function() {
-        return OHIF.viewer.defaultTool;
+        return defaultTool;
     }
 };

Packages/viewerbase/lib/viewportFunctions.js

@@ -0,0 +1,68 @@
+getActiveViewportElement = function() {
+    var viewportIndex = Session.get("activeViewport");
+    return $('.imageViewerViewport').get(viewportIndex);
+};
+
+zoomIn = function() {
+    var element = getActiveViewportElement();
+    var viewport = cornerstone.getViewport(element);
+    viewport.scale += 0.15;
+    if (viewport.scale > 10.0) {
+        viewport.scale = 10.0;
+    }
+    cornerstone.setViewport(element, viewport);
+};
+
+zoomOut = function() {
+    var element = getActiveViewportElement();
+    var viewport = cornerstone.getViewport(element);
+    viewport.scale -= 0.15;
+    if (viewport.scale < 0.05) {
+        viewport.scale = 0.05;
+    }
+    cornerstone.setViewport(element, viewport);
+};
+
+zoomToFit = function() {
+    var element = getActiveViewportElement();
+    cornerstone.fitToWindow(element);
+};
+
+rotateL = function() {
+    var element = getActiveViewportElement();
+    var viewport = cornerstone.getViewport(element);
+    viewport.rotation -= 90;
+    cornerstone.setViewport(element, viewport);
+    updateOrientationMarkers(element, viewport);
+};
+
+rotateR = function() {
+    var element = getActiveViewportElement();
+    var viewport = cornerstone.getViewport(element);
+    viewport.rotation += 90;
+    cornerstone.setViewport(element, viewport);
+    updateOrientationMarkers(element, viewport);
+};
+
+invert = function() {
+    var element = getActiveViewportElement();
+    var viewport = cornerstone.getViewport(element);
+    viewport.invert = (viewport.invert === false);
+    cornerstone.setViewport(element, viewport);
+};
+
+flipV = function() {
+    var element = getActiveViewportElement();
+    var viewport = cornerstone.getViewport(element);
+    viewport.vflip = (viewport.vflip === false);
+    cornerstone.setViewport(element, viewport);
+    updateOrientationMarkers(element, viewport);
+};
+
+flipH = function() {
+    var element = getActiveViewportElement();
+    var viewport = cornerstone.getViewport(element);
+    viewport.hflip = (viewport.hflip === false);
+    cornerstone.setViewport(element, viewport);
+    updateOrientationMarkers(element, viewport);
+};

Packages/viewerbase/package.js

@@ -22,83 +22,85 @@ Package.onUse(function (api) {
 
     api.addFiles('log.js', ['client', 'server']);
 
+    // TODO= Find a meteor package for this
+    api.addFiles('client/compatibility/jquery.hotkeys.js', 'client');
+
     // ---------- Components ----------
 
     // Basic components
-    api.addFiles('components/basic/layout/layout.html', 'client');
-    api.addFiles('components/basic/layout/layout.styl', 'client');
-    api.addFiles('components/basic/login/login.html', 'client');
-    api.addFiles('components/basic/notFound/notFound.html', 'client');
+    api.addFiles('client/components/basic/layout/layout.html', 'client');
+    api.addFiles('client/components/basic/layout/layout.styl', 'client');
+    api.addFiles('client/components/basic/login/login.html', 'client');
+    api.addFiles('client/components/basic/notFound/notFound.html', 'client');
 
-    api.addFiles('components/basic/loadingText/loadingText.html', 'client');
-    api.addFiles('components/basic/loadingText/loadingText.styl', 'client');
+    api.addFiles('client/components/basic/loadingText/loadingText.html', 'client');
+    api.addFiles('client/components/basic/loadingText/loadingText.styl', 'client');
 
-    api.addFiles('components/basic/removableBackdrop/removableBackdrop.html', 'client');
-    api.addFiles('components/basic/removableBackdrop/removableBackdrop.styl', 'client');
+    api.addFiles('client/components/basic/removableBackdrop/removableBackdrop.html', 'client');
+    api.addFiles('client/components/basic/removableBackdrop/removableBackdrop.styl', 'client');
 
-    api.addFiles('components/basic/hidingPanel/hidingPanel.html', 'client');
-    api.addFiles('components/basic/hidingPanel/hidingPanel.js', 'client');
-    api.addFiles('components/basic/hidingPanel/hidingPanel.styl', 'client');
+    api.addFiles('client/components/basic/hidingPanel/hidingPanel.html', 'client');
+    api.addFiles('client/components/basic/hidingPanel/hidingPanel.js', 'client');
+    api.addFiles('client/components/basic/hidingPanel/hidingPanel.styl', 'client');
 
     // Study Browser components
-    api.addFiles('components/studyBrowser/studyBrowser/studyBrowser.html', 'client');
-    api.addFiles('components/studyBrowser/studyBrowser/studyBrowser.js', 'client');
-    api.addFiles('components/studyBrowser/studyBrowser/studyBrowser.styl', 'client');
+    api.addFiles('client/components/studyBrowser/studyBrowser/studyBrowser.html', 'client');
+    api.addFiles('client/components/studyBrowser/studyBrowser/studyBrowser.js', 'client');
+    api.addFiles('client/components/studyBrowser/studyBrowser/studyBrowser.styl', 'client');
 
-    api.addFiles('components/studyBrowser/thumbnailEntry/thumbnailEntry.html', 'client');
-    api.addFiles('components/studyBrowser/thumbnailEntry/thumbnailEntry.js', 'client');
-    api.addFiles('components/studyBrowser/thumbnailEntry/thumbnailEntry.styl', 'client');
+    api.addFiles('client/components/studyBrowser/thumbnailEntry/thumbnailEntry.html', 'client');
+    api.addFiles('client/components/studyBrowser/thumbnailEntry/thumbnailEntry.js', 'client');
+    api.addFiles('client/components/studyBrowser/thumbnailEntry/thumbnailEntry.styl', 'client');
 
-    api.addFiles('components/studyBrowser/thumbnails/thumbnails.html', 'client');
-    api.addFiles('components/studyBrowser/thumbnails/thumbnails.js', 'client');
+    api.addFiles('client/components/studyBrowser/thumbnails/thumbnails.html', 'client');
+    api.addFiles('client/components/studyBrowser/thumbnails/thumbnails.js', 'client');
 
-    api.addFiles('components/studyBrowser/imageThumbnail/imageThumbnail.html', 'client');
-    api.addFiles('components/studyBrowser/imageThumbnail/imageThumbnail.js', 'client');
-    api.addFiles('components/studyBrowser/imageThumbnail/imageThumbnail.styl', 'client');
+    api.addFiles('client/components/studyBrowser/imageThumbnail/imageThumbnail.html', 'client');
+    api.addFiles('client/components/studyBrowser/imageThumbnail/imageThumbnail.js', 'client');
+    api.addFiles('client/components/studyBrowser/imageThumbnail/imageThumbnail.styl', 'client');
 
     // Viewer components
-    api.addFiles('components/viewer/imageViewerViewport/imageViewerViewport.html', 'client');
-    api.addFiles('components/viewer/imageViewerViewport/imageViewerViewport.js', 'client');
-    api.addFiles('components/viewer/imageViewerViewport/imageViewerViewport.styl', 'client');
+    api.addFiles('client/components/viewer/imageViewerViewport/imageViewerViewport.html', 'client');
+    api.addFiles('client/components/viewer/imageViewerViewport/imageViewerViewport.js', 'client');
+    api.addFiles('client/components/viewer/imageViewerViewport/imageViewerViewport.styl', 'client');
 
-    api.addFiles('components/viewer/imageViewerViewports/imageViewerViewports.html', 'client');
-    api.addFiles('components/viewer/imageViewerViewports/imageViewerViewports.js', 'client');
-    api.addFiles('components/viewer/imageViewerViewports/imageViewerViewports.styl', 'client');
+    api.addFiles('client/components/viewer/imageViewerViewports/imageViewerViewports.html', 'client');
+    api.addFiles('client/components/viewer/imageViewerViewports/imageViewerViewports.js', 'client');
+    api.addFiles('client/components/viewer/imageViewerViewports/imageViewerViewports.styl', 'client');
 
-    api.addFiles('components/viewer/loadingIndicator/loadingIndicator.html', 'client');
-    api.addFiles('components/viewer/loadingIndicator/loadingIndicator.js', 'client');
-    api.addFiles('components/viewer/loadingIndicator/loadingIndicator.styl', 'client');
+    api.addFiles('client/components/viewer/loadingIndicator/loadingIndicator.html', 'client');
+    api.addFiles('client/components/viewer/loadingIndicator/loadingIndicator.js', 'client');
+    api.addFiles('client/components/viewer/loadingIndicator/loadingIndicator.styl', 'client');
 
-    api.addFiles('components/viewer/viewportOrientationMarkers/viewportOrientationMarkers.html', 'client');
-    api.addFiles('components/viewer/viewportOrientationMarkers/viewportOrientationMarkers.js', 'client');
-    api.addFiles('components/viewer/viewportOrientationMarkers/viewportOrientationMarkers.styl', 'client');
+    api.addFiles('client/components/viewer/viewportOrientationMarkers/viewportOrientationMarkers.html', 'client');
+    api.addFiles('client/components/viewer/viewportOrientationMarkers/viewportOrientationMarkers.js', 'client');
+    api.addFiles('client/components/viewer/viewportOrientationMarkers/viewportOrientationMarkers.styl', 'client');
 
-    api.addFiles('components/viewer/viewportOverlay/viewportOverlay.html', 'client');
-    api.addFiles('components/viewer/viewportOverlay/viewportOverlay.js', 'client');
-    api.addFiles('components/viewer/viewportOverlay/viewportOverlay.styl', 'client');
+    api.addFiles('client/components/viewer/viewportOverlay/viewportOverlay.html', 'client');
+    api.addFiles('client/components/viewer/viewportOverlay/viewportOverlay.js', 'client');
+    api.addFiles('client/components/viewer/viewportOverlay/viewportOverlay.styl', 'client');
 
-    api.addFiles('components/viewer/layoutChooser/layoutChooser.html', 'client');
-    api.addFiles('components/viewer/layoutChooser/layoutChooser.js', 'client');
-    api.addFiles('components/viewer/layoutChooser/layoutChooser.styl', 'client');
+    api.addFiles('client/components/viewer/layoutChooser/layoutChooser.html', 'client');
+    api.addFiles('client/components/viewer/layoutChooser/layoutChooser.js', 'client');
+    api.addFiles('client/components/viewer/layoutChooser/layoutChooser.styl', 'client');
 
-    api.addFiles('components/viewer/simpleToolbarButton/simpleToolbarButton.html', 'client');
+    api.addFiles('client/components/viewer/simpleToolbarButton/simpleToolbarButton.html', 'client');
 
-    api.addFiles('components/viewer/playClipButton/playClipButton.html', 'client');
-    api.addFiles('components/viewer/playClipButton/playClipButton.js', 'client');
+    api.addFiles('client/components/viewer/playClipButton/playClipButton.html', 'client');
+    api.addFiles('client/components/viewer/playClipButton/playClipButton.js', 'client');
 
-    api.addFiles('components/viewer/hangingProtocolButtons/hangingProtocolButtons.html', 'client');
-    api.addFiles('components/viewer/hangingProtocolButtons/hangingProtocolButtons.js', 'client');
+    api.addFiles('client/components/viewer/hangingProtocolButtons/hangingProtocolButtons.html', 'client');
+    api.addFiles('client/components/viewer/hangingProtocolButtons/hangingProtocolButtons.js', 'client');
 
-    api.addFiles('components/viewer/layoutButton/layoutButton.html', 'client');
+    api.addFiles('client/components/viewer/layoutButton/layoutButton.html', 'client');
 
-    api.addFiles('components/viewer/toolbar/toolbar.html', 'client');
-    api.addFiles('components/viewer/toolbar/toolbar.js', 'client');
-    api.addFiles('components/viewer/toolbar/toolbar.styl', 'client');
+    api.addFiles('client/components/viewer/toolbar/toolbar.html', 'client');
+    api.addFiles('client/components/viewer/toolbar/toolbar.js', 'client');
+    api.addFiles('client/components/viewer/toolbar/toolbar.styl', 'client');
 
     // Library functions
     api.addFiles('lib/accountsConfig.js', 'client');
     api.addFiles('lib/createStacks.js', 'client');
-    api.addFiles('lib/encodeQueryData.js', ['client', 'server']);
     api.addFiles('lib/getImageId.js', 'client');
     api.addFiles('lib/getWADORSImageId.js', 'client');
     api.addFiles('lib/isTouchDevice.js', 'client');
@@ -110,15 +112,20 @@ Package.onUse(function (api) {
     api.addFiles('lib/enablePrefetchOnElement.js', 'client');
     api.addFiles('lib/displayReferenceLines.js', 'client');
     api.addFiles('lib/setActiveViewport.js', 'client');
-    //api.addFiles('lib/switchToImageByIndex.js', 'client');
-    //api.addFiles('lib/switchToImageRelative.js', 'client');
+    api.addFiles('lib/switchToImageByIndex.js', 'client');
+    api.addFiles('lib/switchToImageRelative.js', 'client');
+    api.addFiles('lib/enableHotkeys.js', 'client');
+    api.addFiles('lib/viewportFunctions.js', 'client');
+    api.addFiles('lib/WLPresets.js', 'client');
+
+    api.addFiles('lib/encodeQueryData.js', 'server');
 
     //api.export('accountsConfig', 'client');
+    api.export('enableHotkeys', 'client');
     api.export('enablePrefetchOnElement', 'client');
     api.export('displayReferenceLines', 'client');
     api.export('setActiveViewport', 'client');
     api.export('createStacks', 'client');
-    api.export('encodeQueryData', ['client', 'server']);
     api.export('getImageId', 'client');
     api.export('getWADORSImageId', 'client');
     api.export('isTouchDevice', 'client');
@@ -126,11 +133,14 @@ Package.onUse(function (api) {
     api.export('rerenderViewportWithNewSeries', 'client');
     api.export('sortStudy', 'client');
     api.export('updateOrientationMarkers', 'client');
+    api.export('encodeQueryData', 'server');
 
     // Viewer management objects
     api.export('toolManager', 'client');
     api.export('WindowManager', 'client');
 
+    // Global data object
+    api.export('OHIF', 'client');
 
     // UI Helpers
     api.addFiles('lib/helpers/formatDA.js', 'client');