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59 lines
1.7 KiB
Java
59 lines
1.7 KiB
Java
4 years ago
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// FailedTransmission.java
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package simulator;
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import java.awt.*;
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import support.ProtocolEvent;
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/**
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This is the class for a failed transmission arrow.
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@author Kenneth J. Turner
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@version 1.0 (1st September 1999, IAR): initial version <br/>
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<br/> 1.5 (22nd July 2010, KJT): minor tidying
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*/
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public class FailedTransmission extends TransmissionSymbol {
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private final static int crossSize = 10;
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/**
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Constructor for a traverse transmission arrow.
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@param event protocol event
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@param lToR true = left-to-right
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@param column column
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@param top top of service primitive
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@param height height of successful transmission
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*/
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public FailedTransmission(
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ProtocolEvent event, boolean lToR, int column, int top, int height) {
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super(event, lToR, column, top, height);
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}
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/**
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Draw a dashed line with cutoff representing failed transmission through
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medium.
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@param g graphics object
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*/
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public void draw(Graphics g) {
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int leftX = inset + col * columnWidth + arrowWidth / 2;
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int rightX = leftX + columnWidth - arrowWidth;
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int midX = (leftX + rightX) / 2;
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int midY = top + height / 2;
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g.setColor(Color.blue);
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if (lToR)
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drawDashedLine(g, leftX, top, midX, midY, dashLength);
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else
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drawDashedLine(g, rightX, top, midX, midY, dashLength);
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// draw a cross to indicate loss of signal
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g.drawLine(midX - crossSize / 2, midY - crossSize / 2,
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midX + crossSize / 2, midY + crossSize / 2);
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g.drawLine(midX + crossSize / 2, midY - crossSize / 2,
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midX - crossSize / 2, midY + crossSize / 2);
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g.setColor(Color.black);
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}
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}
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