Added hotkey support to viewerbase

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);
+};