Added SmoothSeekBar

Author: svignesh93

widgetslib/src/main/kotlin/com/litekite/widget/SmoothSeekBar.kt

@@ -0,0 +1,111 @@
+/*
+ * Copyright 2020 LiteKite Startup. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.litekite.widget
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.util.AttributeSet
+import android.view.MotionEvent
+import androidx.appcompat.widget.AppCompatSeekBar
+import kotlin.math.abs
+import kotlin.math.roundToInt
+
+/**
+ * @author Vignesh S
+ * @version 1.0, 06/11/2020
+ * @since 1.0
+ */
+class SmoothSeekBar @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	defStyleAttr: Int = 0
+) : AppCompatSeekBar(context, attrs, defStyleAttr) {
+
+	private var callback: OnSeekBarChangeListener? = null
+	private var lastProgress = 0
+
+	@SuppressLint("ClickableViewAccessibility")
+	override fun onTouchEvent(event: MotionEvent): Boolean {
+		if (!isEnabled) {
+			return false
+		}
+		when (event.action) {
+			MotionEvent.ACTION_DOWN -> {
+				lastProgress = calculateProgress(event)
+				callback?.onStartTrackingTouch(this)
+			}
+			MotionEvent.ACTION_MOVE -> {
+				isPressed = true
+				val newProgress = calculateProgress(event)
+				makeProgress(newProgress)
+				callback?.onProgressChanged(this, progress, true)
+				lastProgress = newProgress
+			}
+			MotionEvent.ACTION_UP -> {
+				isPressed = false
+				performClick()
+				callback?.onStopTrackingTouch(this)
+			}
+			MotionEvent.ACTION_CANCEL -> {
+				isPressed = false
+				callback?.onStopTrackingTouch(this)
+			}
+		}
+		return true
+	}
+
+	override fun setOnSeekBarChangeListener(l: OnSeekBarChangeListener?) {
+		callback = l
+	}
+
+	override fun getMin(): Int {
+		if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
+			return super.getMin()
+		}
+		return 0
+	}
+
+	private fun makeProgress(newProgress: Int) {
+		val displacement = lastProgress - newProgress
+		val currentProgress = if (displacement < 0) {
+			// Progress increased
+			progress + abs(displacement)
+		} else {
+			// Progress reduced
+			progress - abs(displacement)
+		}
+		// Setting current progress
+		progress = when {
+			progress > max -> {
+				max
+			}
+			progress < min -> {
+				min
+			}
+			else -> {
+				currentProgress
+			}
+		}
+	}
+
+	private fun calculateProgress(event: MotionEvent): Int {
+		val scale = event.x / width
+		val range = max - min
+		return (scale * range + min).roundToInt()
+	}
+
+}

widgetslib/src/main/kotlin/com/litekite/widget/ViewRotator.kt

@@ -30,7 +30,6 @@ import android.view.ViewGroup
  * @version 1.0, 03/11/2020
  * @since 1.0
  */
-@Suppress("UNUSED")
 class ViewRotator @JvmOverloads constructor(
 	context: Context,
 	attrs: AttributeSet? = null,