convert FocusRectView to kotlin

app/src/main/java/com/simplemobiletools/camera/FocusRectView.java

@@ -1,66 +0,0 @@
-package com.simplemobiletools.camera;
-
-import android.content.Context;
-import android.graphics.Canvas;
-import android.graphics.Paint;
-import android.graphics.Rect;
-import android.os.Handler;
-import android.view.ViewGroup;
-
-public class FocusRectView extends ViewGroup {
-    private static final int RECT_SIZE = 50;
-    private static final int RECT_DURATION = 500;
-
-    private static Paint mPaint;
-    private static Rect mRect;
-    private static Handler mHandler;
-
-    private static boolean mDrawRect;
-    private static int mPrimaryColor;
-
-    public FocusRectView(Context context) {
-        super(context);
-        setWillNotDraw(false);
-        mHandler = new Handler();
-        mPrimaryColor = getResources().getColor(R.color.colorPrimary);
-        setupPaint();
-    }
-
-    private void setupPaint() {
-        mPaint = new Paint();
-        mPaint.setStyle(Paint.Style.STROKE);
-        mPaint.setColor(mPrimaryColor);
-        mPaint.setStrokeWidth(2);
-    }
-
-    public void drawFocusRect(int x, int y) {
-        mRect = new Rect(x - RECT_SIZE, y - RECT_SIZE, x + RECT_SIZE, y + RECT_SIZE);
-        toggleRect(true);
-
-        mHandler.removeCallbacksAndMessages(null);
-        mHandler.postDelayed(new Runnable() {
-            @Override
-            public void run() {
-                toggleRect(false);
-            }
-        }, RECT_DURATION);
-    }
-
-    private void toggleRect(boolean show) {
-        mDrawRect = show;
-        invalidate();
-    }
-
-    @Override
-    protected void onLayout(boolean changed, int l, int t, int r, int b) {
-
-    }
-
-    @Override
-    protected void onDraw(Canvas canvas) {
-        super.onDraw(canvas);
-        if (mDrawRect) {
-            canvas.drawRect(mRect, mPaint);
-        }
-    }
-}

app/src/main/java/com/simplemobiletools/camera/FocusRectView.kt

@@ -0,0 +1,61 @@
+package com.simplemobiletools.camera
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Paint
+import android.graphics.Rect
+import android.os.Handler
+import android.view.ViewGroup
+
+class FocusRectView(context: Context) : ViewGroup(context) {
+    companion object {
+        private val RECT_SIZE = 50
+        private val RECT_DURATION = 500
+
+        private var mDrawRect = false
+        private var mPrimaryColor = 0
+
+        lateinit var mPaint: Paint
+        lateinit var mHandler: Handler
+        lateinit var mRect: Rect
+    }
+
+    init {
+        setWillNotDraw(false)
+        mHandler = Handler()
+        mPrimaryColor = resources.getColor(R.color.colorPrimary)
+        setupPaint()
+    }
+
+    private fun setupPaint() {
+        mPaint = Paint().apply {
+            style = Paint.Style.STROKE
+            color = mPrimaryColor
+            strokeWidth = 2f
+        }
+    }
+
+    fun drawFocusRect(x: Int, y: Int) {
+        mRect = Rect(x - RECT_SIZE, y - RECT_SIZE, x + RECT_SIZE, y + RECT_SIZE)
+        toggleRect(true)
+
+        mHandler.removeCallbacksAndMessages(null)
+        mHandler.postDelayed({ toggleRect(false) }, RECT_DURATION.toLong())
+    }
+
+    private fun toggleRect(show: Boolean) {
+        mDrawRect = show
+        invalidate()
+    }
+
+    override fun onLayout(changed: Boolean, l: Int, t: Int, r: Int, b: Int) {
+
+    }
+
+    override fun onDraw(canvas: Canvas) {
+        super.onDraw(canvas)
+        if (mDrawRect) {
+            canvas.drawRect(mRect, mPaint)
+        }
+    }
+}