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pjm2 |
1.1 |
// pjm2@ukc.ac.uk |
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// Class for laying out text in a terminal screen in Java! |
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// After hours of fiddling, it is possible ;-) |
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public class TerminalScreen { |
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private static final String ESCAPE_SEQUENCE = "["; |
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private static final int BOLD = 1; |
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private static final int BLACK_BG = 7; |
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private static final int BLUE = 34; |
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private static final int PINK = 35; |
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private static final int RED = 31; |
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// No-args constructor. |
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public TerminalScreen() { |
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// reserved. |
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} |
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// Set the cursor position. |
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public void gotoxy(int x, int y) { |
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System.out.print(ESCAPE_SEQUENCE+y+";"+x+"H"); |
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} |
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// Print a string at the current position. |
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public void print(String s) { |
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System.out.print(s); |
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} |
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// Print a string at the current position with the |
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// specified colour. |
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public void print(String s, int colour) { |
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System.out.print(ESCAPE_SEQUENCE+colour+"m"); |
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System.out.print(s); |
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System.out.print(ESCAPE_SEQUENCE+"0m"); |
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} |
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// Print a string at the current position with a specified |
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// foreground and background colour. |
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public void print(String s, int colour, int other) { |
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System.out.print(ESCAPE_SEQUENCE+other+"m"); |
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this.print(s, colour); |
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} |
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// Clears the terminal screen and then resets the cursor position. |
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public void clear() { |
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System.out.print(ESCAPE_SEQUENCE+"2J"); |
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System.out.print(ESCAPE_SEQUENCE+"1;24r"); |
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} |
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// Main method for testing! |
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public static void main(String[] args) throws InterruptedException { |
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TerminalScreen screen = new TerminalScreen(); |
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screen.clear(); |
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screen.gotoxy(34, 10); |
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screen.print(" i - s c r e a m ", TerminalScreen.BOLD, TerminalScreen.BLACK_BG); |
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screen.gotoxy(27, 12); |
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screen.print("Central Monitoring System Client", TerminalScreen.BLUE); |
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screen.gotoxy(32,13); |
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screen.print("Unix/Linux version 1.0"); |
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screen.gotoxy(1,1); |
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screen.print("Top left"); |
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screen.gotoxy(79,24); |
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screen.print("E"); |
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screen.gotoxy(1,24); |
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Thread.sleep(3000); |
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screen.clear(); |
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} |
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} |
