using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;



namespace Psychlops
{

	public class Canvas : Drawable
	{
		public static System.Windows.Controls.Image default_instance;
		public static System.Windows.Controls.UserControl default_panel;
		public static WriteableBitmap default_buffer; 
		System.Windows.Controls.Image instance;
		System.Windows.Controls.UserControl panel; 
		WriteableBitmap buffer;

		public Canvas(int wid, int hei)
		{
			panel = default_panel;
			instance = default_instance;
			instance.Width = wid;
			instance.Height = hei;
			buffer = new WriteableBitmap((int)instance.Width, (int)instance.Height);
			instance.Source = buffer;
			instance.MouseMove += Mouse.Canvas_MousePos;
			instance.MouseLeftButtonDown += Mouse.Canvas_LDown;
			instance.MouseLeftButtonUp += Mouse.Canvas_LUp;
			instance.MouseWheel += Mouse.Canvas_MouseWheel;
			Mouse._prime = instance;
			Main.drawable = this;
			default_buffer = buffer;
		}
		public Canvas(int wid, int hei, System.Windows.Controls.Image target, System.Windows.Controls.UserControl system)
		{
			panel = system;
			instance = target;
			instance.Width = wid;
			instance.Height = hei;
			buffer = new WriteableBitmap((int)instance.Width, (int)instance.Height);
			instance = target;
			instance.Source = buffer;
			instance.MouseMove += Mouse.Canvas_MousePos;
			instance.MouseLeftButtonDown += Mouse.Canvas_LDown;
			instance.MouseLeftButtonUp += Mouse.Canvas_LUp;
			instance.MouseWheel += Mouse.Canvas_MouseWheel;
			Mouse._prime = instance;
			Main.drawable = this;
		}
		public Point getCenter()
		{
			return new Point(instance.Width/2.0, instance.Height/2.0, 0);
		}

		public void clear()
		{
			buffer.Clear(Color.black);
		}
		public void clear(Color col)
		{
			buffer.Clear(col);
		}

		public void pix(int x, int y, Color col)
		{
			buffer.SetPixel(x, y, col);
		}


		public void line(Line drawee, Color col)
		{
			buffer.DrawLine((int)drawee.begin.x, (int)drawee.begin.y, (int)drawee.end.x, (int)drawee.end.y, col);
		}
		public void rect(Rectangle drawee, Color col)
		{
			buffer.DrawRectangle((int)drawee.v1.x, (int)drawee.v1.y, (int)drawee.v2.x, (int)drawee.v2.y, col);
		}
		public void ellipse(Ellipse drawee, Color col)
		{
			buffer.DrawEllipse((int)(drawee.datum.x - drawee.xdiameter / 2), (int)(drawee.datum.y - drawee.ydiameter / 2), (int)(drawee.datum.x + drawee.xdiameter / 2), (int)(drawee.datum.y + drawee.ydiameter / 2), col);
		}
		public void polygon(Polygon drawee, Color col)
		{
			int[] ps = new int[drawee.vertices.Count];
			int i=0;
			foreach (Point p in drawee.vertices)
			{
				ps[i] = (int)p.x; i++;
				ps[i] = (int)p.y; i++;
			}
			buffer.DrawPolyline(ps, col);
		}
		public void image(Image drawee)
		{
			buffer.Blit(drawee.datum, drawee.buffer, drawee.self_rect, Colors.White, WriteableBitmapExtensions.BlendMode.None);
		}


		public void flip()
		{
			buffer.Invalidate();
		}
	}


}