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Last-Modified: Tue, 21 May 1996 20:08:38 GMT

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//****************************************************************************

// ---- version information ----

//

// DialogPanel.java      v 1.00 b3

// Written by:           I. van Rienen / E-mail ivr@bart.nl

// URL:                  http://www/bart.nl/~ivr

// Initial release:           v 1.00b3 26-03-1996

// Released in public domain: v 1.00b3 26-03-1996

//

// ---- Description ----

// Java class containing methods for DialogPanel.

//

// This program and the Java source is in the public domain.

// Permission to use, copy, modify, and distribute this software

// and its documentation for NON-COMMERCIAL purposes and

// without fee is hereby granted.

//

//    Copyright 1996

//

//    Iwan van Rienen

//    Joan Maetsuyckerstr. 145

//    2593 ZG  The Hague

//    The Netherlands

//

// I am not responsible for any bugs in this program and

// possible damage to hard- or software when using this program.

//****************************************************************************

import java.awt.*;

import java.awt.image.*;

import sun.awt.image.URLImageSource;



class DialogPanel extends Panel implements ImageObserver {

    DigSimFrame frame = null;

    static final int HORIZONTAL_GAP = 50;

    protected Font SimpleDialogFont;

    protected FontMetrics SimpleDialogFontMetrics;

    String Capt;

    int CaptWidth;

    Image ImageToDisplay = null;

    int imgw = 0, imgh = 0;

    static final long updateRate = 100;



//----------------------------------------------------------------------------

// The constructor of the SimpleDialog class.

//----------------------------------------------------------------------------

    public DialogPanel (DigSimFrame f, String capt, int ImageID) {

        frame = f;

        Capt = capt;

        getImage (ImageID);



        setLayout( new BorderLayout());

        SimpleDialogFont = new Font("TimesRoman",Font.PLAIN, 14);

        SimpleDialogFontMetrics = getFontMetrics(SimpleDialogFont);

        setFont(SimpleDialogFont);

        super.setLayout( new BorderLayout());

        CaptWidth = SimpleDialogFontMetrics.stringWidth(capt);

        repaint();

    }



//-----------------------------------------------------------------------------

// Calculate and return the preferred size of the Dialog

//-----------------------------------------------------------------------------

    public Dimension preferredSize() {

        return new Dimension(HORIZONTAL_GAP + CaptWidth, 125);

    }



//-----------------------------------------------------------------------------

// Draw the message, and if available, the image

//-----------------------------------------------------------------------------

    public void paint(Graphics g) {

        if (ImageToDisplay != null) {

            g.drawImage (ImageToDisplay, 20, 10, this);

            g.setColor (Color.black);

            int x = (size().width - CaptWidth) / 2 + imgw + 20;

            if (x < imgw + 50) x = imgw + 50;

            g.drawString (Capt, x, 30);

        } else {

            g.setColor (Color.black);

            int x = (size().width - CaptWidth) / 2;

            g.drawString (Capt, x, 30);

        }

    }



//-----------------------------------------------------------------------------

// Load an image from the specified URL

//-----------------------------------------------------------------------------

    public void getImage (int ImageID) {

        String FileName = null;

        switch (ImageID) {

            case SimpleDialog.IMAGE_STOP:

                FileName = "images/stop.gif";

                break;

            case SimpleDialog.IMAGE_WARNING:

                FileName = "images/warning.gif";

                break;

            case SimpleDialog.IMAGE_NONE:

            default:

                return;

        }

        if (frame != null) {

            ImageToDisplay = frame.applet.getImage(frame.applet.getDocumentBase(), FileName);

        }

    }



//-----------------------------------------------------------------------------

// There is new data available for the picture

//-----------------------------------------------------------------------------

    public synchronized boolean imageUpdate(Image img, int infoflags,

					    int x, int y, int w, int h) {

        boolean ret = true;

        boolean dopaint = false;

        long updatetime = 0;



        if ((infoflags & WIDTH) != 0) {

            imgw = w;

            dopaint = true;

        }

        if ((infoflags & HEIGHT) != 0) {

            imgh = h;

            dopaint = true;

        }

        if ((infoflags & (FRAMEBITS | ALLBITS)) != 0) {

            dopaint = true;

            ret = false;

        } else if ((infoflags & SOMEBITS) != 0) {

            dopaint = true;

            updatetime = updateRate;

        }

        if ((infoflags & ERROR) != 0) {

            ret = false;

        }

        if (dopaint) {

            repaint(updatetime);

        }

        return ret;

    }

}