using System;
using CPF.Drawing;
using CPF.Input;
using CPF.ReoGrid.Drawing;
using CPF.ReoGrid.Interaction;
using CPF.ReoGrid.Rendering;

namespace CPF.ReoGrid.Views
{
	internal class DrawingViewport : Viewport
	{
		public DrawingViewport(IViewportController vc) : base(vc)
		{
		}

		public override void DrawView(CellDrawingContext dc)
		{
			this.sheet.drawingCanvas.ClipBounds = this.ViewBounds;
			this.sheet.drawingCanvas.Draw(dc);
		}

		public override void UpdateView()
		{
			base.UpdateView();
			this.sheet.drawingCanvas.ScaleX = this.scaleFactor;
			this.sheet.drawingCanvas.ScaleY = this.scaleFactor;
		}

		public override IView GetViewByPoint(Point p)
		{
			WorksheetDrawingCanvas drawingCanvas = this.sheet.drawingCanvas;
			bool flag = drawingCanvas == null || drawingCanvas.Children == null || drawingCanvas.Children.Count <= 0;
			IView result;
			if (flag)
			{
				result = null;
			}
			else
			{
				Point point = this.PointToView(p);
				for (int i = drawingCanvas.Children.Count - 1; i >= 0; i--)
				{
					IDrawingObject drawingObject = drawingCanvas.Children[i];
					bool flag2 = drawingObject.Bounds.Contains(point);
					if (flag2)
					{
						return this;
					}
				}
				result = null;
			}
			return result;
		}

		public override bool OnMouseDown(Point location, MouseButtons buttons, InputModifiers modifiers)
		{
			return this.sheet.drawingCanvas.OnMouseDown(location, buttons, modifiers);
		}

		public override bool OnMouseMove(Point location, MouseButtons buttons)
		{
			return this.sheet.drawingCanvas.OnMouseMove(location, buttons);
		}

		public override bool OnMouseUp(Point location, MouseButtons buttons, InputModifiers modifiers)
		{
			return this.sheet.drawingCanvas.OnMouseUp(location, buttons, modifiers);
		}

		public override bool OnMouseDoubleClick(Point location, MouseButtons buttons)
		{
			return this.sheet.drawingCanvas.OnMouseDoubleClick(location, buttons);
		}
	}
}