package NET.worlds.console;

import java.awt.Container;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Panel;
import java.awt.Point;

public class ScapePicPanel extends Panel {
   private static final long serialVersionUID = -1019314311757410999L;
   private static final int QUARTERED = 0;
   private static final int UPPERLEFT = 1;
   private ScapePicImage image = null;
   private int hWnd;
   private int drawMode = 0;

   public ScapePicPanel() {
      this(null);
   }

   public ScapePicPanel(ScapePicImage image) {
      this.setImage(image);
   }

   public void setImage(ScapePicImage image) {
      this.image = image;
   }

   @Override
   public void paint(Graphics g) {
      this.drawBackground();
      super.paint(g);
   }

   @Override
   public void update(Graphics g) {
      this.paint(g);
   }

   public void setQuartered() {
      this.drawMode = 0;
   }

   public void setUpperLeft() {
      this.drawMode = 1;
   }

   private void drawBackground() {
      assert this.drawMode == 1 || this.drawMode == 0;

      if (this.image != null) {
         Dimension size = this.getSize();

         assert size != null;

         assert size.height >= 0 && size.width >= 0;

         if (this.drawMode == 1) {
            for (int j = 0; j < size.height; j += this.image.getHeight()) {
               for (int i = 0; i < size.width; i += this.image.getWidth()) {
                  this.drawScapePicImage(this.image, i, j, 0, 0, this.image.getWidth(), this.image.getHeight());
               }
            }
         }

         if (this.drawMode == 0) {
            int cx = size.width / 2;
            int cy = size.height / 2;

            for (int j = 0; j < cy; j += this.image.getHeight()) {
               for (int i = 0; i < cx; i += this.image.getWidth()) {
                  int endX = Math.min(cx - i, this.image.getWidth());
                  int endY = Math.min(cy - j, this.image.getHeight());
                  this.drawScapePicImage(this.image, i, j, 0, 0, endX, endY);
               }
            }

            for (int j = 0; j < cy; j += this.image.getHeight()) {
               for (int i = size.width; i > cx; i -= this.image.getWidth()) {
                  int startX = Math.max(i - this.image.getWidth(), cx);
                  int imageStartX = this.image.getWidth() - (i - startX);
                  int endY = Math.min(cy - j, this.image.getHeight());
                  this.drawScapePicImage(this.image, startX, j, imageStartX, 0, i - startX, endY);
               }
            }

            for (int j = size.height; j > cy; j -= this.image.getHeight()) {
               for (int i = 0; i < cx; i += this.image.getWidth()) {
                  int endX = Math.min(cx - i, this.image.getWidth());
                  int startY = Math.max(j - this.image.getHeight(), cy);
                  int imageStartY = this.image.getHeight() - (j - startY);
                  this.drawScapePicImage(this.image, i, startY, 0, imageStartY, endX, j - startY);
               }
            }

            for (int j = size.height; j > cy; j -= this.image.getHeight()) {
               for (int i = size.width; i > cx; i -= this.image.getWidth()) {
                  int startX = Math.max(i - this.image.getWidth(), cx);
                  int imageStartX = this.image.getWidth() - (i - startX);
                  int startY = Math.max(j - this.image.getHeight(), cy);
                  int imageStartY = this.image.getHeight() - (j - startY);
                  this.drawScapePicImage(this.image, startX, startY, imageStartX, imageStartY, i - startX, j - startY);
               }
            }
         }
      }
   }

   public void drawScapePicImage(ScapePicImage image, int xDst, int yDst, int xSrc, int ySrc, int width, int height) {
      if (this.hWnd == 0) {
         Point loc = this.locationInWindow();
         Dimension size = this.getSize();
         String title = this.getFrameTitle();

         assert title != null;

         int hWndParent = Window.findWindow(title);

         assert hWndParent != 0;

         this.hWnd = Window.findChildWindow(hWndParent, loc.x, loc.y, size.width, size.height);

         assert this.hWnd != 0;
      }

      ScapePicCanvas.bitBlt(this.hWnd, image.getDIB(), xDst, yDst, xSrc, ySrc, width, height);
   }

   private String getFrameTitle() {
      for (Container c = this.getParent(); c != null; c = c.getParent()) {
         if (c instanceof Frame) {
            return ((Frame)c).getTitle();
         }
      }

      return null;
   }

   private Point locationInWindow() {
      Point offset = this.location();

      for (Container c = this.getParent(); c != null; c = c.getParent()) {
         Point move = c.location();
         offset.translate(move.x, move.y);
      }

      return offset;
   }
}