feat: add useAnimation option to WheelInput

src/InputObserver.ts

@@ -64,7 +64,7 @@ export class InputObserver implements InputTypeObserver {
     this._moveDistance = this._axisManager.get(input.axes);
   }
 
-  public change(input: InputType, event, offset: Axis, useDuration?: boolean) {
+  public change(input: InputType, event, offset: Axis, useAnimation?: boolean) {
     if (
       this._isStopped ||
       !this._interruptManager.isInterrupting() ||
@@ -108,7 +108,7 @@ export class InputObserver implements InputTypeObserver {
       input,
       event,
     };
-    if (useDuration) {
+    if (useAnimation) {
       const duration = this._animationManager.getDuration(destPos, depaPos);
       this._animationManager.animateTo(destPos, duration, changeOption);
     } else {

src/inputType/InputType.ts

@@ -25,7 +25,7 @@ export interface InputType {
 export interface InputTypeObserver {
   options: AxesOption;
   get(inputType: InputType): Axis;
-  change(inputType: InputType, event, offset: Axis, useDuration?: boolean);
+  change(inputType: InputType, event, offset: Axis, useAnimation?: boolean);
   hold(inputType: InputType, event);
   release(
     inputType: InputType,

src/inputType/PanInput.ts

@@ -275,7 +275,7 @@ export class PanInput implements InputType {
         }
       }
     }
-    const offset: number[] = this._applyScale(
+    const offset: number[] = this._getOffset(
       [panEvent.offsetX, panEvent.offsetY],
       [
         useDirection(DIRECTION_HORIZONTAL, this._direction, userDirection),
@@ -306,7 +306,7 @@ export class PanInput implements InputType {
     this._detachWindowEvent(activeEvent);
     clearTimeout(this._rightEdgeTimer);
     const prevEvent = activeEvent.prevEvent;
-    const velocity = this._applyScale(
+    const velocity = this._getOffset(
       [
         Math.abs(prevEvent.velocityX) * (prevEvent.offsetX < 0 ? -1 : 1),
         Math.abs(prevEvent.velocityY) * (prevEvent.offsetY < 0 ? -1 : 1),
@@ -338,6 +338,19 @@ export class PanInput implements InputType {
     });
   }
 
+  protected _getOffset(properties: number[], direction: boolean[]): number[] {
+    const offset: number[] = [0, 0];
+    const scale = this.options.scale;
+
+    if (direction[0]) {
+      offset[0] = properties[0] * scale[0];
+    }
+    if (direction[1]) {
+      offset[1] = properties[1] * scale[1];
+    }
+    return offset;
+  }
+
   private _attachElementEvent(observer: InputTypeObserver) {
     const activeEvent = convertInputType(this.options.inputType);
     if (!activeEvent) {
@@ -351,7 +364,7 @@ export class PanInput implements InputType {
     });
     // adding event listener to element prevents invalid behavior in iOS Safari
     activeEvent.move.forEach((event) => {
-      this.element?.addEventListener(event, () => {});
+      this.element?.addEventListener(event, this._voidFunction);
     });
   }
 
@@ -361,30 +374,19 @@ export class PanInput implements InputType {
       this.element?.removeEventListener(event, this._onPanstart);
     });
     activeEvent?.move.forEach((event) => {
-      this.element?.removeEventListener(event, () => {});
+      this.element?.removeEventListener(event, this._voidFunction);
     });
     this._enabled = false;
     this._observer = null;
   }
 
-  private _applyScale(properties: number[], direction: boolean[]): number[] {
-    const offset: number[] = [0, 0];
-    const scale = this.options.scale;
-
-    if (direction[0]) {
-      offset[0] = properties[0] * scale[0];
-    }
-    if (direction[1]) {
-      offset[1] = properties[1] * scale[1];
-    }
-    return offset;
-  }
-
   private _forceRelease = () => {
     const activeEvent = this._activeEvent;
     const prevEvent = activeEvent.prevEvent;
-    this._detachWindowEvent(activeEvent);
     activeEvent.onRelease();
     this._observer.release(this, prevEvent, [0, 0]);
+    this._detachWindowEvent(activeEvent);
   };
+
+  private _voidFunction = () => {};
 }

src/inputType/WheelInput.ts

@@ -6,13 +6,16 @@ export interface WheelInputOption {
   scale?: number;
   releaseDelay?: number;
   useNormalized?: boolean;
+  useAnimation?: boolean;
 }
 
 /**
  * @typedef {Object} WheelInputOption The option object of the eg.Axes.WheelInput module
  * @ko eg.Axes.WheelInput 모듈의 옵션 객체
  * @param {Number} [scale=1] Coordinate scale that a user can move<ko>사용자의 동작으로 이동하는 좌표의 배율</ko>
  * @param {Number} [releaseDelay=300] Millisecond that trigger release event after last input<ko>마지막 입력 이후 release 이벤트가 트리거되기까지의 밀리초</ko>
+ * @param {Boolean} [useNormalized=true] Whether to calculate scroll speed the same in all browsers<ko>모든 브라우저에서 스크롤 속도를 동일하게 처리할지 여부</ko>
+ * @param {Boolean} [useAnimation=false] Whether to process coordinate changes through the mouse wheel as a continuous animation<ko>마우스 휠을 통한 좌표 변화를 연속적인 애니메이션으로 처리할지 여부</ko>
  **/
 
 /**
@@ -50,6 +53,7 @@ export class WheelInput implements InputType {
         scale: 1,
         releaseDelay: 300,
         useNormalized: true,
+        useAnimation: false,
       },
       ...options,
     };
@@ -127,7 +131,12 @@ export class WheelInput implements InputType {
       (event.deltaY > 0 ? -1 : 1) *
       this.options.scale *
       (this.options.useNormalized ? 1 : Math.abs(event.deltaY));
-    this._observer.change(this, event, toAxis(this.axes, [offset]), true);
+    this._observer.change(
+      this,
+      event,
+      toAxis(this.axes, [offset]),
+      this.options.useAnimation
+    );
     clearTimeout(this._timer);
 
     this._timer = setTimeout(() => {

test/manual/js/wheel.js

@@ -0,0 +1,67 @@
+const wrapper = document.getElementById("content");
+const ui0 = document.getElementById("ui0");
+const ui1 = document.getElementById("ui1");
+
+const axes0 = new eg.Axes(
+  {
+    zoom: {
+      range: [1, 4],
+    },
+  },
+  {
+    deceleration: 0.00002,
+  }
+);
+
+axes0.on({
+  animationStart: (e) => {
+    if (e && e.inputEvent) {
+      e.inputEvent.__childrenAxesAlreadyChanged = false;
+    }
+  },
+  change: (e) => {
+    var pos = e.pos;
+
+    ui0.style[
+      eg.Axes.TRANSFORM
+    ] = `translate3d(200px, 200px, 0) scale(${pos.zoom})`;
+    ui0.innerHTML = `${pos.zoom.toFixed(2)}`;
+  },
+});
+
+axes0.connect(
+  "zoom",
+  new eg.Axes.WheelInput(wrapper, {
+    scale: 1 / 1000,
+    useNormalized: false,
+    useAnimation: true,
+  })
+);
+axes0.setTo({ zoom: 3 });
+
+const axes1 = new eg.Axes({
+  zoom: {
+    range: [1, 4],
+  },
+});
+
+axes1.on({
+  change: (e) => {
+    var pos = e.pos;
+
+    ui1.style[
+      eg.Axes.TRANSFORM
+    ] = `translate3d(200px, 200px, 0) scale(${pos.zoom})`;
+    ui1.innerHTML = `${pos.zoom.toFixed(2)}`;
+  },
+});
+
+axes1.connect(
+  "zoom",
+  new eg.Axes.WheelInput(wrapper, {
+    scale: 1 / 1000,
+    useNormalized: false,
+    useAnimation: false,
+  })
+);
+axes1.setTo({ zoom: 3 });

test/manual/wheel.html

@@ -0,0 +1,73 @@
+<!DOCTYPE html>
+
+<head>
+  <meta charset="UTF-8">
+  <title>egjs-axes</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1 user-scalable=no">
+  <style>
+    .content {
+      display: flex;
+      flex-direction: row;
+    }
+
+    .uiWrapper {
+      overflow: hidden;
+      position: relative;
+      width: 400px;
+      height: 400px;
+      background-color: #eebf3f;
+      border-radius: 5px;
+      margin-bottom: 20px;
+      box-shadow: 0px 1px 2px #8c532e;
+      float: left;
+    }
+
+    .uiWrapper .ui {
+      width: 100px;
+      height: 100px;
+      left: -50px;
+      top: -50px;
+      position: absolute;
+      background-color: black;
+      color: white;
+      border-radius: 50px;
+      line-height: 100px;
+      text-align: center;
+    }
+
+    .uiWrapper .ui img {
+      width: 45px;
+      height: 75px;
+    }
+  </style>
+</head>
+
+<body>
+  <h1>Pan Input</h1>
+  <div id="content" class="content">
+    <div>
+      <h3>UseAnimation: true</h3>
+      <div id="delegateTarget0">
+        <div id="uiWrapper" class="uiWrapper">
+          <div id="ui0" class="ui">
+            3.0
+          </div>
+        </div>
+      </div>
+    </div>
+    <div>
+      <h3>UseAnimation: false</h3>
+      <div id="delegateTarget1">
+        <div id="uiWrapper" class="uiWrapper">
+          <div id="ui1" class="ui">
+            3.0
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+  <script src="../../dist/axes.pkgd.js"></script>
+  <script src="js/wheel.js"></script>
+</body>
+
+</html>

test/unit/inputType/PanInput.spec.js

@@ -314,7 +314,7 @@ describe("PanInput", () => {
     });
   });
 
-  describe("options test", () => {
+  describe("Options", () => {
     beforeEach(() => {
       el = sandbox();
       inst = new Axes({

test/unit/inputType/PinchInput.spec.js

@@ -217,7 +217,7 @@ describe("PinchInput", () => {
     });
   });
 
-  describe("options test", () => {
+  describe("Options", () => {
     beforeEach(() => {
       el = sandbox();
       inst = new Axes({

test/unit/inputType/WheelInput.spec.js

@@ -274,4 +274,75 @@ describe("WheelInput", () => {
       });
     });
   });
+
+  describe("Options", () => {
+    beforeEach(() => {
+      el = sandbox();
+      inst = new Axes({
+        x: {
+          range: [0, 200],
+        },
+      });
+    });
+    afterEach(() => {
+      if (inst) {
+        inst.destroy();
+        inst = null;
+      }
+      if (input) {
+        input.destroy();
+        input = null;
+      }
+      cleanup();
+    });
+    describe("useAnimation", () => {
+      let animationStartHandler;
+      let animationEndHandler;
+      beforeEach(() => {
+        animationStartHandler = sinon.spy();
+        animationEndHandler = sinon.spy();
+        inst.on({
+          animationStart: animationStartHandler,
+          animationEnd: animationEndHandler,
+        });
+      });
+
+      it("should change coordinate smoothly by animation when useAnimation is true", (done) => {
+        // Given
+        const deltaY = 1;
+        input = new WheelInput(el, { scale: -10, useAnimation: true });
+        inst.connect(["x"], input);
+
+        // When
+        TestHelper.wheelVertical(el, deltaY, () => {
+          // Then
+          expect(inst.axisManager.get().x).to.be.not.equal(10);
+          setTimeout(() => {
+            expect(animationStartHandler.calledOnce).to.be.true;
+            expect(animationEndHandler.calledOnce).to.be.true;
+            expect(inst.axisManager.get().x).to.be.equal(10);
+            done();
+          }, 200);
+        });
+      });
+
+      it("should change coordinate immediately when useAnimation is false", (done) => {
+        // Given
+        const deltaY = 1;
+        input = new WheelInput(el, { scale: -10, useAnimation: false });
+        inst.connect(["x"], input);
+
+        // When
+        TestHelper.wheelVertical(el, deltaY, () => {
+          // Then
+          expect(inst.axisManager.get().x).to.be.equal(10);
+          setTimeout(() => {
+            expect(animationStartHandler.called).to.be.false;
+            expect(animationEndHandler.called).to.be.false;
+            done();
+          }, 200);
+        });
+      });
+    });
+  });
 });