Viewport2DMixin

view.on("click", function(event){
  // event is the event object returned after the event fires

  // Prints the map coordinates of the clicked location
  console.log(event.mapPoint);
});

// Set up a click event handler and retrieve the screen point
view.on("click", function(event) {
 // the hitTest() checks to see if any graphics in the view
 // intersect the given screen x, y coordinates
 view.hitTest(event)
  .then(getGraphics);
});

view.on("click", function(event) {
 // you must overwrite default click-for-popup
 // behavior to display your own popup
 view.popupEnabled = false;

 // Get the coordinates of the click on the view
 let lat = Math.round(event.mapPoint.latitude * 1000) / 1000;
 let lon = Math.round(event.mapPoint.longitude * 1000) / 1000;

 view.popup.open({
   // Set the popup's title to the coordinates of the location
   title: "Reverse geocode: [" + lon + ", " + lat + "]",
   location: event.mapPoint // Set the location of the popup to the clicked location
   content: "This is a point of interest"  // content displayed in the popup
 });
});

view.on("double-click", function(event) {
  // The event object contains the mapPoint and the screen coordinates of the location
  // that was clicked.
  console.log("screen point", event.x, event.y);
  console.log("map point", event.mapPoint);
});

view.on("double-tap-drag", (event) => {
  // Display the distance moved from the drag origin.
  console.log("x distance:", event.x, "y distance:", event.y);
});

view.on("drag", function(event){
 // Print out the current state of the
 // drag event.
 console.log("drag state", event.action);
});

view.on("hold", function(event) {
  // The event object contains the mapPoint and the screen coordinates of the location
  // that was clicked.
  console.log("hold at screen point", event.x, event.y);
  console.log("hold at map point", event.mapPoint);
});

// Set up an immediate-click event handler and retrieve the screen point
view.on("immediate-click", function(event) {
 // the hitTest() checks to see if any graphics in the view
 // intersect the given screen x, y coordinates
 view.hitTest(event)
  .then(getGraphics);
});

// Zoom in when user clicks on "a" button
// Zoom out when user clicks on "s" button
view.on("key-down", function(event){
 console.log("key-down", event);

 if (event.key === "a"){
   let zm = view.zoom + 1;

   view.goTo({
     target: view.center,
     zoom: zm
   });
 }
 else if(event.key == "s"){
   let zm = view.zoom - 1;

   view.goTo({
     target: view.center,
     zoom: zm
   });
 }
});

// This function fires each time a layer view is created for a layer in
// the map of the view.
view.on("layerview-create", function(event) {
  // The event contains the layer and its layer view that has just been
  // created. Here we check for the creation of a layer view for a layer with
  // a specific id, and log the layer view
  if (event.layer.id === "satellite") {
    // The LayerView for the desired layer
    console.log(event.layerView);
  }
});

// This function fires each time an error occurs during the creation of a layerview
view.on("layerview-create-error", function(event) {
  console.error("LayerView failed to create for layer with the id: ", event.layer.id);
});

view.on("mouse-wheel", function(event){
 // deltaY value is positive when wheel is scrolled up
 // and it is negative when wheel is scrolled down.
 console.log(event.deltaY);
});

// Fires `pointer-move` event when user clicks on "Shift"
// key and moves the pointer on the view.
view.on('pointer-move', ["Shift"], function(event){
  let point = view.toMap({x: event.x, y: event.y});
  bufferPoint(point);
});

view.on("vertical-two-finger-drag", (event) => {
  // Display the distance moved vertically from the drag origin.
  console.log("y distance:", event.y);
});