graphicscmd.java

Hecl编程语言是一个高层次的脚本语言的Java实现。其用意是要小

		d.drawLine(v0,HeclUtils.getPoint(v1,argv,startat));
		v0.setLocation(v1.getX(),v1.getY());
	    }
	    return null;
	}
	
	if(subcmd.equals("polygon")) {
	    if(startat+3 > argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "p0 p1 p2 [...]");
	    Point2D[] p = getPoints(argv,startat);
	    d.drawPolygon(p.length,p,false);
	    return null;
	}
	
	if(subcmd.equals("fpolygon")) {
	    if(startat+3 > argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "p0 p1 p2 [...]");
	    Point2D[] p = getPoints(argv,startat);
	    d.drawPolygon(p.length,p,true);
	    return null;
	}


	if(subcmd.equals("rect")) {
	    // point dimension
	    if(startat+2 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "point dimension");
	    d.drawRect(HeclUtils.thing2Point(argv,startat),
		       HeclUtils.thing2Dimension(argv,startat+1),
		       false);
	    return null;
	}

	if(subcmd.equals("string")) {
	    if(startat+2 > argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "point text [anchor]");

	    int anchor = startat+2 < argv.length ?
		WidgetInfo.toCanvasAnchor(argv[startat+2]) : Graphics.BOTTOM|Graphics.LEFT;
	    
	    d.drawString(argv[startat+1].toString(),
			 HeclUtils.thing2Point(argv,startat), anchor);
	    return null;
	}

	if(subcmd.equals("htext")) {
	    if(startat+2 > argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "point text [anchor]");

	    int anchor = startat+2 < argv.length ?
		WidgetInfo.toCanvasAnchor(argv[startat+2]) : Graphics.BOTTOM|Graphics.LEFT;
	    
	    d.drawVString(argv[startat+1].toString(),
			  HeclUtils.thing2Point(argv,startat));
	    return null;
	}

	if(subcmd.equals("rrect")) {
	    /* p dim arcw arch */
	    if(startat+4 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "point dimension arcw arch");
	    d.drawRoundRect(HeclUtils.thing2Point(argv,startat),
			    HeclUtils.thing2Dimension(argv,startat+1),
			    IntThing.get(argv[startat+2]),
			    IntThing.get(argv[startat+3]));
	    return null;
	}


	if(subcmd.equals("farc")) {
	    /* x, y, w, h, arcw, argh */
	    if(startat+4 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "point dimension arcw arch");
	    d.drawArc(HeclUtils.thing2Point(argv,startat),
		      HeclUtils.thing2Dimension(argv,startat+1),
		      IntThing.get(argv[startat+2]),
		      IntThing.get(argv[startat+3]),
		      true);
	    return null;
	}

	if(subcmd.equals("frect")) {
	    // point dim
	    if(startat+2 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "point dimension");
	    d.drawRect(HeclUtils.thing2Point(argv,startat),
		       HeclUtils.thing2Dimension(argv,startat+1),
		       true);
	    return null;
	}

	if(subcmd.equals("frrect")) {
	    // point dim 
	    if(startat+4 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "point dimension arcw arch");
	    d.fillRoundRect(HeclUtils.thing2Point(argv,startat),
			    HeclUtils.thing2Dimension(argv,startat+1),
			    IntThing.get(argv[startat+2]),
			    IntThing.get(argv[startat+3]));
	    return null;
	}

	// Get commands...
	if(subcmd.startsWith("get")) {
	    /* no arguments */
	    if(startat != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "");

//#ifdef notdef
	    if(subcmd.equals("getblue")) {
		//ip.setResult(d.getBlueComponent());
		return null;
	    }
	    if(subcmd.equals("getgreen")) {
		//ip.setResult(d.getGreenComponent());
		return null;
	    }
	    if(subcmd.equals("getred")) {
		//ip.setResult(d.getRedComponent());
		return null;
	    }
//#endif
	    if(subcmd.equals("getfont"))
		return FontMap.fontThing(d.getFont());
	    if(subcmd.equals("getgrayscale"))
		return IntThing.create(d.getGrayScale());
	    if(subcmd.equals("getlinetype"))
		IntThing.create((int)d.getLineType());
	    if(subcmd.equals("getcolor"))
		return WidgetInfo.fromColor(d.getColor());
	    if(subcmd.equals("getbackground"))
		return WidgetInfo.fromColor(d.getBackground());
	}

//#ifdef notdef	
	if(subcmd.equals("displaycolor")) {
	    n += 1;
	    if(startat+1 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "<colorspec>");
	    Color c = new Color(WidgetInfo.toColor(argv[startat]));
	    return WidgetInfo.fromColor(d.getDisplayColor(c));
	}
//#endif

	// Set commands
	if(subcmd.equals("background")) {
	    /* colorspec */
	    if(startat+1 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "<colorspec>");
	    d.setBackground(new Color(WidgetInfo.toColor(argv[startat])));
	    return null;
	}
	if(subcmd.equals("color")) {
	    /* colorspec */
	    if(startat+1 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "<colorspec>");
	    d.setColor(new Color(WidgetInfo.toColor(argv[startat])));
	    return null;
	}
	if(subcmd.equals("font")) {
	    /* font */
	    if(startat+1 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "<font>");
	    d.setFont(FontMap.get(argv[startat]));
	    return null;
	}
	if(subcmd.equals("grayscale")) {
	    /* colorspec */
	    if(startat+1 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "<greyspec>");
	    d.setGrayScale(IntThing.get(argv[startat]));
	    return null;
	}
	if(subcmd.equals("linetype")) {
	    /* linetype */
	    if(startat+1 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "<linetype>");
	    d.setLineStipple((short)HeclUtils.thing2int(argv[startat],false,0));
	    return null;
	}

	// Misc commands
	if(subcmd.equals("clip")) {
	    // {x, y} {w, h}
	    if(startat+2 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "point dimension");
	    Point2D p = HeclUtils.thing2Point(argv,startat);
	    Dimension dim = HeclUtils.thing2Dimension(argv,startat+1);
	    d.setClip((int)Math.floor(.5+p.getX()),(int)Math.floor(.5+p.getY()),
		      dim.width,dim.height);
	    return null;
	}
	if(subcmd.equals("cliprect")) {
	    /* {x, y} {w, h} */
	    if(startat+2 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "x y w h");
	    Point2D p = HeclUtils.thing2Point(argv,startat);
	    Dimension dim = HeclUtils.thing2Dimension(argv,startat+1);
	    d.clipRect((int)Math.floor(.5+p.getX()),(int)Math.floor(.5+p.getY()),
		       dim.width,dim.height);
	    return null;
	}
//#ifdef notdef
	if(subcmd.equals("translate")) {
	    // point
	    if(startat+1 != argv.length)
		throw HeclException.createWrongNumArgsException(
		    argv, startat, "point");
	    d.translate(HeclUtils.thing2Point(argv,startat));
	    return null;
	}
//#endif
	return super.handlecmd(ip,d,subcmd,argv,startat);
    }


    private Point2D[] getPoints(Thing[] argv,int startat)
	throws HeclException {
	int n = (argv.length - startat);
	Point2D[] points = new Point2D[n];
	for(int i=0; startat<argv.length; ++startat, ++i) {
	    points[i] = HeclUtils.thing2Point(argv,startat);
	    //System.out.println("point["+i+"]="+points[i].getX()+", "+points[i].getY());
	}
	return points;
    }
    
    protected boolean needflush = true;
//#ifdef notdef
    private int mytx = 0;
    private int myty = 0;
//#endif
    private Drawable drawable;

    private static GraphicsCmd cmd = new GraphicsCmd();
}


class Context {
    protected Context(Drawable d) {
	cliprect = new Rectangle();
	Graphics g = d.getGraphics();
	
	fcol = d.getColor();
	bcol = d.getBackground();
	gray = d.getGrayScale();
	font = d.getFont();
	linestipple = d.getLineStipple();
	linewidth = d.getLineWidth();
	d.getClipBounds(cliprect);
//#ifdef notdef
	mytx = d.getTranslateX();
	myty = d.getTranslateY();
//#endif
    }
    
    
    protected void restore(Drawable d) {
	Graphics g = d.getGraphics();
	
	d.setColor(fcol);
	d.setBackground(bcol);
	d.setGrayScale(gray);
	d.setLineStipple(linestipple);
	d.setLineWidth(linewidth);
	d.setClip(cliprect);
	d.setFont(font);
//#ifdef notdef
	d.translate(mytx,myty);
//#endif
    }
    
    private Color fcol;
    private Color bcol;
    private int gray;
    private Font font;
    private short linestipple;
    private int linewidth;
    private Rectangle cliprect;
//#ifdef notdef
    private double mytx;
    private double myty;
//#endif
}

// Variables:
// mode:java
// coding:utf-8
// End: