package NET.worlds.console;

import java.awt.Canvas;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Point;

public class ScapePicCanvas extends Canvas {
   private static final long serialVersionUID = 927951584800056826L;
   private int hWnd;

   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;
      }

      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;
   }

   public static native void bitBlt(int var0, int var1, int var2, int var3, int var4, int var5, int var6, int var7);
}