//  SquareBallRectangleView.kt by Kari Laitinen

//  http://www.naturalprogramming.com/

//  2013-02-13  File created.
//  2017-12-27  Kotlin version created.


package square.ball.rectangle

import android.content.Context
import android.graphics.Canvas
import android.graphics.Color
import android.graphics.Paint
import android.util.AttributeSet
import android.view.View

class SquareBallRectangleView : View
{
   internal var view_center_point_x = 100
   internal var view_center_point_y = 100

   internal var shape_to_draw = "Square"

   constructor(context: Context) : super(context)
   {
   }

   //  The following constructor is needed when SquareBallRectangleView object is
   //  specified in an XML file, and is thus created automatically.

   constructor(context: Context, attributes: AttributeSet) : super(context, attributes)
   {
   }

   public override fun onSizeChanged(current_width_of_this_view: Int,
                                     current_height_of_this_view: Int,
                                     old_width_of_this_view: Int,
                                     old_height_of_this_view: Int)
   {
      view_center_point_x = current_width_of_this_view / 2
      view_center_point_y = current_height_of_this_view / 2
   }

   fun set_shape_to_draw(given_shape_to_draw: String)
   {
      shape_to_draw = given_shape_to_draw
      invalidate()
   }

   override fun onDraw(canvas: Canvas)
   {
      val filling_paint = Paint()
      filling_paint.style = Paint.Style.FILL

      val outline_paint = Paint()  // Default color for Paint is black.
      outline_paint.style = Paint.Style.STROKE

      if (shape_to_draw == "Square")
      {
         filling_paint.color = Color.CYAN

         canvas.drawRect((view_center_point_x - 80).toFloat(), (view_center_point_y - 80).toFloat(),
               (view_center_point_x + 80).toFloat(), (view_center_point_y + 80).toFloat(),
               filling_paint)

         canvas.drawRect((view_center_point_x - 80).toFloat(), (view_center_point_y - 80).toFloat(),
               (view_center_point_x + 80).toFloat(), (view_center_point_y + 80).toFloat(),
               outline_paint)
      }
      else if (shape_to_draw == "Ball")
      {
         filling_paint.color = Color.MAGENTA

         canvas.drawCircle(view_center_point_x.toFloat(),
               view_center_point_y.toFloat(), 80f, filling_paint)

         canvas.drawCircle(view_center_point_x.toFloat(),
               view_center_point_y.toFloat(), 80f, outline_paint)
      }
      else if (shape_to_draw == "Rectangle")
      {
         filling_paint.color = Color.YELLOW

         canvas.drawRect((view_center_point_x - 120).toFloat(), (view_center_point_y - 60).toFloat(),
               (view_center_point_x + 120).toFloat(), (view_center_point_y + 60).toFloat(),
               filling_paint)

         canvas.drawRect((view_center_point_x - 120).toFloat(), (view_center_point_y - 60).toFloat(),
               (view_center_point_x + 120).toFloat(), (view_center_point_y + 60).toFloat(),
               outline_paint)
      }
   }
}