annotate src/de/mud/terminal/VDUBuffer.java @ 389:f715ad45ce01

Added tag stable-1.9.0 for changeset ebcb4aea03ec
author Carl Byington <carl@five-ten-sg.com>
date Tue, 19 Aug 2014 15:48:40 -0700
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1 /*
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2 * This file is part of "JTA - Telnet/SSH for the JAVA(tm) platform".
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3 *
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4 * (c) Matthias L. Jugel, Marcus Meißner 1996-2005. All Rights Reserved.
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5 *
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6 * Please visit http://javatelnet.org/ for updates and contact.
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7 *
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8 * --LICENSE NOTICE--
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9 * This program is free software; you can redistribute it and/or
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10 * modify it under the terms of the GNU General Public License
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11 * as published by the Free Software Foundation; either version 2
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12 * of the License, or (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful,
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15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 * GNU General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU General Public License
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20 * along with this program; if not, write to the Free Software
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21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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22 * --LICENSE NOTICE--
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23 *
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24 */
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25
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26 package de.mud.terminal;
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27
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28 import java.util.Arrays;
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29
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30 /**
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31 * Implementation of a Video Display Unit (VDU) buffer. This class contains
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32 * all methods to manipulate the buffer that stores characters and their
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33 * attributes as well as the regions displayed.
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34 *
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35 * @author Matthias L. Jugel, Marcus Meißner
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36 * @version $Id: VDUBuffer.java 503 2005-10-24 07:34:13Z marcus $
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37 */
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38 public class VDUBuffer {
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39
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40 /** a generic display that should redraw on demand */
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41 protected VDUDisplay display;
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42
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43 /** Enable debug messages. */
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44 public final static int debug = 0;
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45
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46 public int height, width; /* rows and columns */
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47 public boolean[] update; /* contains the lines that need update */
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48 public char[][] charArray; /* contains the characters */
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49 public int[][] charAttributes; /* contains character attrs */
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50 public int bufSize;
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51 public int maxBufSize; /* buffer sizes */
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52 public int screenBase; /* the actual screen start */
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53 public int windowBase; /* where the start displaying */
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54 public int scrollMarker; /* marks the last line inserted */
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55
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56 private int topMargin; /* top scroll margin */
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57 private int bottomMargin; /* bottom scroll margin */
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58
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59 // cursor variables
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60 protected boolean showcursor = true;
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61 protected int cursorX, cursorY;
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62
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63 /** Scroll up when inserting a line. */
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64 public final static boolean SCROLL_UP = false;
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65 /** Scroll down when inserting a line. */
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66 public final static boolean SCROLL_DOWN = true;
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67
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68 /* Attributes bit-field usage:
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69 *
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70 * 8421 8421 8421 8421 8421 8421 8421 8421
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71 * |||| |||| |||| |||| |||| |||| |||| |||`- Bold
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72 * |||| |||| |||| |||| |||| |||| |||| ||`-- Underline
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73 * |||| |||| |||| |||| |||| |||| |||| |`--- Invert
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74 * |||| |||| |||| |||| |||| |||| |||| `---- Low
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75 * |||| |||| |||| |||| |||| |||| |||`------ Invisible
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76 * |||| |||| |||| |||| ||`+-++++-+++------- Foreground Color
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77 * |||| |||| |`++-++++-++------------------ Background Color
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78 * |||| |||| `----------------------------- Fullwidth character
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79 * `+++-++++------------------------------- Reserved for future use
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80 */
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81
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82 /** Make character normal. */
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83 public final static int NORMAL = 0x00;
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84 /** Make character bold. */
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85 public final static int BOLD = 0x01;
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86 /** Underline character. */
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87 public final static int UNDERLINE = 0x02;
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88 /** Invert character. */
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89 public final static int INVERT = 0x04;
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90 /** Lower intensity character. */
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91 public final static int LOW = 0x08;
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92 /** Invisible character. */
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93 public final static int INVISIBLE = 0x10;
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94 /** Unicode full-width character (CJK, et al.) */
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95 public final static int FULLWIDTH = 0x8000000;
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96
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97 /** how much to left shift the foreground color */
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98 public final static int COLOR_FG_SHIFT = 5;
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99 /** how much to left shift the background color */
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100 public final static int COLOR_BG_SHIFT = 14;
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101 /** color mask */
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102 public final static int COLOR = 0x7fffe0; /* 0000 0000 0111 1111 1111 1111 1110 0000 */
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103 /** foreground color mask */
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104 public final static int COLOR_FG = 0x003fe0; /* 0000 0000 0000 0000 0011 1111 1110 0000 */
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105 /** background color mask */
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106 public final static int COLOR_BG = 0x7fc000; /* 0000 0000 0111 1111 1100 0000 0000 0000 */
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107
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108 /**
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109 * Create a new video display buffer with the passed width and height in
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110 * characters.
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111 * @param width the length of the character lines
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112 * @param height the amount of lines on the screen
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113 */
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114 public VDUBuffer(int width, int height) {
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115 // set the display screen size
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116 setScreenSize(width, height, false);
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117 }
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118
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119 /**
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120 * Create a standard video display buffer with 80 columns and 24 lines.
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121 */
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122 public VDUBuffer() {
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123 this(80, 24);
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124 }
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125
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126 /**
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127 * Put a character on the screen with normal font and outline.
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128 * The character previously on that position will be overwritten.
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129 * You need to call redraw() to update the screen.
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130 * @param c x-coordinate (column)
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131 * @param l y-coordinate (line)
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132 * @param ch the character to show on the screen
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133 * @see #insertChar
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134 * @see #deleteChar
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135 * @see #redraw
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136 */
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137 public void putChar(int c, int l, char ch) {
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138 putChar(c, l, ch, NORMAL);
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139 }
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140
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141 /**
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142 * Put a character on the screen with specific font and outline.
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143 * The character previously on that position will be overwritten.
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144 * You need to call redraw() to update the screen.
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145 * @param c x-coordinate (column)
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146 * @param l y-coordinate (line)
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147 * @param ch the character to show on the screen
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148 * @param attributes the character attributes
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149 * @see #BOLD
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150 * @see #UNDERLINE
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151 * @see #INVERT
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152 * @see #INVISIBLE
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153 * @see #NORMAL
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154 * @see #LOW
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155 * @see #insertChar
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156 * @see #deleteChar
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157 * @see #redraw
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158 */
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159
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160 public void putChar(int c, int l, char ch, int attributes) {
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161 int ll = screenBase + l;
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162
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163 if ((ll >= bufSize) || (c >= width)) return; // ignore characters outside our buffer
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164
123
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165 charArray[ll][c] = ch;
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166 charAttributes[ll][c] = attributes;
0
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167
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168 if (l < height)
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169 update[l + 1] = true;
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170 }
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171
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172 /**
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173 * Get the character at the specified position.
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174 * @param c x-coordinate (column)
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175 * @param l y-coordinate (line)
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176 * @see #putChar
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177 */
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178 public char getChar(int c, int l) {
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179 return charArray[screenBase + l][c];
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180 }
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181
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182 /**
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183 * Get the attributes for the specified position.
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184 * @param c x-coordinate (column)
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185 * @param l y-coordinate (line)
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186 * @see #putChar
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187 */
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188 public int getAttributes(int c, int l) {
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189 return charAttributes[screenBase + l][c];
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190 }
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191
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192 /**
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193 * Insert a character at a specific position on the screen.
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194 * All character right to from this position will be moved one to the right.
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195 * You need to call redraw() to update the screen.
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196 * @param c x-coordinate (column)
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197 * @param l y-coordinate (line)
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198 * @param ch the character to insert
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199 * @param attributes the character attributes
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200 * @see #BOLD
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201 * @see #UNDERLINE
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202 * @see #INVERT
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203 * @see #INVISIBLE
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204 * @see #NORMAL
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205 * @see #LOW
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206 * @see #putChar
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207 * @see #deleteChar
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208 * @see #redraw
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209 */
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210 public void insertChar(int c, int l, char ch, int attributes) {
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211 System.arraycopy(charArray[screenBase + l], c,
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212 charArray[screenBase + l], c + 1, width - c - 1);
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213 System.arraycopy(charAttributes[screenBase + l], c,
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214 charAttributes[screenBase + l], c + 1, width - c - 1);
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215 putChar(c, l, ch, attributes);
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216 }
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217
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218 /**
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219 * Delete a character at a given position on the screen.
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220 * All characters right to the position will be moved one to the left.
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221 * You need to call redraw() to update the screen.
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222 * @param c x-coordinate (column)
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223 * @param l y-coordinate (line)
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224 * @see #putChar
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225 * @see #insertChar
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226 * @see #redraw
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227 */
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228 public void deleteChar(int c, int l) {
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229 if (c < width - 1) {
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230 System.arraycopy(charArray[screenBase + l], c + 1,
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231 charArray[screenBase + l], c, width - c - 1);
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232 System.arraycopy(charAttributes[screenBase + l], c + 1,
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233 charAttributes[screenBase + l], c, width - c - 1);
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234 }
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235
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236 putChar(width - 1, l, (char) 0);
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237 }
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238
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239 /**
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240 * Put a String at a specific position. Any characters previously on that
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241 * position will be overwritten. You need to call redraw() for screen update.
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242 * @param c x-coordinate (column)
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243 * @param l y-coordinate (line)
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244 * @param s the string to be shown on the screen
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245 * @see #BOLD
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246 * @see #UNDERLINE
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247 * @see #INVERT
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248 * @see #INVISIBLE
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249 * @see #NORMAL
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250 * @see #LOW
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251 * @see #putChar
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252 * @see #insertLine
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253 * @see #deleteLine
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254 * @see #redraw
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255 */
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256 public void putString(int c, int l, String s) {
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257 putString(c, l, s, NORMAL);
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258 }
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259
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260 /**
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261 * Put a String at a specific position giving all characters the same
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262 * attributes. Any characters previously on that position will be
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263 * overwritten. You need to call redraw() to update the screen.
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264 * @param c x-coordinate (column)
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265 * @param l y-coordinate (line)
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266 * @param s the string to be shown on the screen
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267 * @param attributes character attributes
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268 * @see #BOLD
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269 * @see #UNDERLINE
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270 * @see #INVERT
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271 * @see #INVISIBLE
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272 * @see #NORMAL
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273 * @see #LOW
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274 * @see #putChar
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275 * @see #insertLine
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276 * @see #deleteLine
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277 * @see #redraw
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278 */
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279 public void putString(int c, int l, String s, int attributes) {
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280 for (int i = 0; i < s.length() && c + i < width; i++)
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281 putChar(c + i, l, s.charAt(i), attributes);
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Carl Byington <carl@five-ten-sg.com>
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282 }
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283
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Carl Byington <carl@five-ten-sg.com>
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284 /**
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Carl Byington <carl@five-ten-sg.com>
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285 * Insert a blank line at a specific position.
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Carl Byington <carl@five-ten-sg.com>
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286 * The current line and all previous lines are scrolled one line up. The
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
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287 * top line is lost. You need to call redraw() to update the screen.
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288 * @param l the y-coordinate to insert the line
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289 * @see #deleteLine
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290 * @see #redraw
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Carl Byington <carl@five-ten-sg.com>
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291 */
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Carl Byington <carl@five-ten-sg.com>
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292 public void insertLine(int l) {
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293 insertLine(l, 1, SCROLL_UP);
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Carl Byington <carl@five-ten-sg.com>
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294 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
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295
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Carl Byington <carl@five-ten-sg.com>
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296 /**
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Carl Byington <carl@five-ten-sg.com>
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diff changeset
297 * Insert blank lines at a specific position.
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Carl Byington <carl@five-ten-sg.com>
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298 * You need to call redraw() to update the screen
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299 * @param l the y-coordinate to insert the line
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300 * @param n amount of lines to be inserted
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Carl Byington <carl@five-ten-sg.com>
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301 * @see #deleteLine
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Carl Byington <carl@five-ten-sg.com>
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302 * @see #redraw
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
303 */
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Carl Byington <carl@five-ten-sg.com>
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304 public void insertLine(int l, int n) {
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305 insertLine(l, n, SCROLL_UP);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
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306 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
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307
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
308 /**
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Carl Byington <carl@five-ten-sg.com>
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diff changeset
309 * Insert a blank line at a specific position. Scroll text according to
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
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310 * the argument.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
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311 * You need to call redraw() to update the screen
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Carl Byington <carl@five-ten-sg.com>
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312 * @param l the y-coordinate to insert the line
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313 * @param scrollDown scroll down
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Carl Byington <carl@five-ten-sg.com>
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314 * @see #deleteLine
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Carl Byington <carl@five-ten-sg.com>
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315 * @see #SCROLL_UP
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Carl Byington <carl@five-ten-sg.com>
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316 * @see #SCROLL_DOWN
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Carl Byington <carl@five-ten-sg.com>
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317 * @see #redraw
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Carl Byington <carl@five-ten-sg.com>
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diff changeset
318 */
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Carl Byington <carl@five-ten-sg.com>
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319 public void insertLine(int l, boolean scrollDown) {
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320 insertLine(l, 1, scrollDown);
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Carl Byington <carl@five-ten-sg.com>
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321 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
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322
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Carl Byington <carl@five-ten-sg.com>
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diff changeset
323 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
324 * Insert blank lines at a specific position.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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325 * The current line and all previous lines are scrolled one line up. The
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
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326 * top line is lost. You need to call redraw() to update the screen.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
327 * @param l the y-coordinate to insert the line
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Carl Byington <carl@five-ten-sg.com>
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diff changeset
328 * @param n number of lines to be inserted
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
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diff changeset
329 * @param scrollDown scroll down
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Carl Byington <carl@five-ten-sg.com>
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330 * @see #deleteLine
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
331 * @see #SCROLL_UP
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
332 * @see #SCROLL_DOWN
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
333 * @see #redraw
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
334 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
335
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
336 public synchronized void insertLine(int l, int n, boolean scrollDown) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
337 char cbuf[][] = null;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
338 int abuf[][] = null;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
339 int offset = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
340 int oldBase = screenBase;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
341 int newScreenBase = screenBase;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
342 int newWindowBase = windowBase;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
343 int newBufSize = bufSize;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
344
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
345 if (l > bottomMargin) /* We do not scroll below bottom margin (below the scrolling region). */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
346 return;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
347
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
348 int top = (l < topMargin ?
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
349 0 : (l > bottomMargin ?
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
350 (bottomMargin + 1 < height ?
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
351 bottomMargin + 1 : height - 1) : topMargin));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
352 int bottom = (l > bottomMargin ?
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
353 height - 1 : (l < topMargin ?
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
354 (topMargin > 0 ?
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
355 topMargin - 1 : 0) : bottomMargin));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
356
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
357 // System.out.println("l is "+l+", top is "+top+", bottom is "+bottom+", bottomargin is "+bottomMargin+", topMargin is "+topMargin);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
358 if (scrollDown) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
359 if (n > (bottom - top)) n = (bottom - top);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
360
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
361 int size = bottom - l - (n - 1);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
362
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
363 if (size < 0) size = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
364
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
365 cbuf = new char[size][];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
366 abuf = new int[size][];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
367 System.arraycopy(charArray, oldBase + l, cbuf, 0, bottom - l - (n - 1));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
368 System.arraycopy(charAttributes, oldBase + l,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
369 abuf, 0, bottom - l - (n - 1));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
370 System.arraycopy(cbuf, 0, charArray, oldBase + l + n,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
371 bottom - l - (n - 1));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
372 System.arraycopy(abuf, 0, charAttributes, oldBase + l + n,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
373 bottom - l - (n - 1));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
374 cbuf = charArray;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
375 abuf = charAttributes;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
376 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
377 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
378 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
379 if (n > (bottom - top) + 1) n = (bottom - top) + 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
380
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
381 if (bufSize < maxBufSize) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
382 if (bufSize + n > maxBufSize) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
383 offset = n - (maxBufSize - bufSize);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
384 scrollMarker += offset;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
385 newBufSize = maxBufSize;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
386 newScreenBase = maxBufSize - height - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
387 newWindowBase = screenBase;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
388 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
389 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
390 scrollMarker += n;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
391 newScreenBase += n;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
392 newWindowBase += n;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
393 newBufSize += n;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
394 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
395
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
396 cbuf = new char[newBufSize][];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
397 abuf = new int[newBufSize][];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
398 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
399 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
400 offset = n;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
401 cbuf = charArray;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
402 abuf = charAttributes;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
403 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
404
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
405 // copy anything from the top of the buffer (+offset) to the new top
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
406 // up to the screenBase.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
407 if (oldBase > 0) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
408 System.arraycopy(charArray, offset,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
409 cbuf, 0,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
410 oldBase - offset);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
411 System.arraycopy(charAttributes, offset,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
412 abuf, 0,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
413 oldBase - offset);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
414 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
415
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
416 // copy anything from the top of the screen (screenBase) up to the
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
417 // topMargin to the new screen
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
418 if (top > 0) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
419 System.arraycopy(charArray, oldBase,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
420 cbuf, newScreenBase,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
421 top);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
422 System.arraycopy(charAttributes, oldBase,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
423 abuf, newScreenBase,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
424 top);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
425 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
426
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
427 // copy anything from the topMargin up to the amount of lines inserted
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
428 // to the gap left over between scrollback buffer and screenBase
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
429 if (oldBase >= 0) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
430 System.arraycopy(charArray, oldBase + top,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
431 cbuf, oldBase - offset,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
432 n);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
433 System.arraycopy(charAttributes, oldBase + top,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
434 abuf, oldBase - offset,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
435 n);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
436 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
437
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
438 // copy anything from topMargin + n up to the line linserted to the
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
439 // topMargin
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
440 System.arraycopy(charArray, oldBase + top + n,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
441 cbuf, newScreenBase + top,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
442 l - top - (n - 1));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
443 System.arraycopy(charAttributes, oldBase + top + n,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
444 abuf, newScreenBase + top,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
445 l - top - (n - 1));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
446
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
447 //
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
448 // copy the all lines next to the inserted to the new buffer
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
449 if (l < height - 1) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
450 System.arraycopy(charArray, oldBase + l + 1,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
451 cbuf, newScreenBase + l + 1,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
452 (height - 1) - l);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
453 System.arraycopy(charAttributes, oldBase + l + 1,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
454 abuf, newScreenBase + l + 1,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
455 (height - 1) - l);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
456 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
457 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
458 catch (ArrayIndexOutOfBoundsException e) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
459 // this should not happen anymore, but I will leave the code
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
460 // here in case something happens anyway. That code above is
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
461 // so complex I always have a hard time understanding what
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
462 // I did, even though there are comments
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
463 System.err.println("*** Error while scrolling up:");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
464 System.err.println("--- BEGIN STACK TRACE ---");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
465 e.printStackTrace();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
466 System.err.println("--- END STACK TRACE ---");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
467 System.err.println("bufSize=" + bufSize + ", maxBufSize=" + maxBufSize);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
468 System.err.println("top=" + top + ", bottom=" + bottom);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
469 System.err.println("n=" + n + ", l=" + l);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
470 System.err.println("screenBase=" + screenBase + ", windowBase=" + windowBase);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
471 System.err.println("newScreenBase=" + newScreenBase + ", newWindowBase=" + newWindowBase);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
472 System.err.println("oldBase=" + oldBase);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
473 System.err.println("size.width=" + width + ", size.height=" + height);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
474 System.err.println("abuf.length=" + abuf.length + ", cbuf.length=" + cbuf.length);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
475 System.err.println("*** done dumping debug information");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
476 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
477 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
478
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
479 // this is a little helper to mark the scrolling
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
480 scrollMarker -= n;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
481
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
482 for (int i = 0; i < n; i++) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
483 cbuf[(newScreenBase + l) + (scrollDown ? i : -i)] = new char[width];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
484 Arrays.fill(cbuf[(newScreenBase + l) + (scrollDown ? i : -i)], ' ');
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
485 abuf[(newScreenBase + l) + (scrollDown ? i : -i)] = new int[width];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
486 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
487
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
488 charArray = cbuf;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
489 charAttributes = abuf;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
490 screenBase = newScreenBase;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
491 windowBase = newWindowBase;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
492 bufSize = newBufSize;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
493
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
494 if (scrollDown)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
495 markLine(l, bottom - l + 1);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
496 else
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
497 markLine(top, l - top + 1);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
498
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
499 display.updateScrollBar();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
500 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
501
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
502 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
503 * Delete a line at a specific position. Subsequent lines will be scrolled
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
504 * up to fill the space and a blank line is inserted at the end of the
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
505 * screen.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
506 * @param l the y-coordinate to insert the line
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
507 * @see #deleteLine
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
508 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
509 public void deleteLine(int l) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
510 int bottom = (l > bottomMargin ? height - 1 :
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
511 (l < topMargin ? topMargin : bottomMargin + 1));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
512 int numRows = bottom - l - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
513 char[] discardedChars = charArray[screenBase + l];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
514 int[] discardedAttributes = charAttributes[screenBase + l];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
515
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
516 if (numRows > 0) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
517 System.arraycopy(charArray, screenBase + l + 1,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
518 charArray, screenBase + l, numRows);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
519 System.arraycopy(charAttributes, screenBase + l + 1,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
520 charAttributes, screenBase + l, numRows);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
521 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
522
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
523 int newBottomRow = screenBase + bottom - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
524 charArray[newBottomRow] = discardedChars;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
525 charAttributes[newBottomRow] = discardedAttributes;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
526 Arrays.fill(charArray[newBottomRow], ' ');
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
527 Arrays.fill(charAttributes[newBottomRow], 0);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
528 markLine(l, bottom - l);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
529 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
530
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
531 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
532 * Delete a rectangular portion of the screen.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
533 * You need to call redraw() to update the screen.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
534 * @param c x-coordinate (column)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
535 * @param l y-coordinate (row)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
536 * @param w with of the area in characters
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
537 * @param h height of the area in characters
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
538 * @param curAttr attribute to fill
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
539 * @see #deleteChar
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
540 * @see #deleteLine
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
541 * @see #redraw
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
542 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
543 public void deleteArea(int c, int l, int w, int h, int curAttr) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
544 int endColumn = c + w;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
545 int targetRow = screenBase + l;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
546
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
547 for (int i = 0; i < h && l + i < height; i++) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
548 Arrays.fill(charAttributes[targetRow], c, endColumn, curAttr);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
549 Arrays.fill(charArray[targetRow], c, endColumn, ' ');
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
550 targetRow++;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
551 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
552
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
553 markLine(l, h);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
554 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
555
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
556 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
557 * Delete a rectangular portion of the screen.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
558 * You need to call redraw() to update the screen.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
559 * @param c x-coordinate (column)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
560 * @param l y-coordinate (row)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
561 * @param w with of the area in characters
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
562 * @param h height of the area in characters
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
563 * @see #deleteChar
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
564 * @see #deleteLine
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
565 * @see #redraw
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
566 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
567 public void deleteArea(int c, int l, int w, int h) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
568 deleteArea(c, l, w, h, 0);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
569 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
570
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
571 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
572 * Sets whether the cursor is visible or not.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
573 * @param doshow
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
574 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
575 public void showCursor(boolean doshow) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
576 showcursor = doshow;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
577 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
578
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
579 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
580 * Check whether the cursor is currently visible.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
581 * @return visibility
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
582 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
583 public boolean isCursorVisible() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
584 return showcursor;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
585 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
586
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
587 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
588 * Puts the cursor at the specified position.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
589 * @param c column
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
590 * @param l line
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
591 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
592 public void setCursorPosition(int c, int l) {
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 125
diff changeset
593 cursorX = (c > width - 1) ? width - 1 : c;
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 125
diff changeset
594 cursorY = (l > height - 1) ? height - 1 : l;
0
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
595 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
596
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
597 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
598 * Get the current column of the cursor position.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
599 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
600 public int getCursorColumn() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
601 return cursorX;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
602 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
603
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
604 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
605 * Get the current line of the cursor position.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
606 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
607 public int getCursorRow() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
608 return cursorY;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
609 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
610
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
611 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
612 * Set the current window base. This allows to view the scrollback buffer.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
613 * @param line the line where the screen window starts
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
614 * @see #setBufferSize
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
615 * @see #getBufferSize
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
616 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
617 public void setWindowBase(int line) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
618 if (line > screenBase)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
619 line = screenBase;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
620 else if (line < 0) line = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
621
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
622 windowBase = line;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
623 update[0] = true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
624 redraw();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
625 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
626
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
627 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
628 * Get the current window base.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
629 * @see #setWindowBase
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
630 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
631 public int getWindowBase() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
632 return windowBase;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
633 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
634
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
635 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
636 * Set the scroll margins simultaneously. If they're out of bounds, trim them.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
637 * @param l1 line that is the top
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
638 * @param l2 line that is the bottom
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
639 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
640 public void setMargins(int l1, int l2) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
641 if (l1 > l2)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
642 return;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
643
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
644 if (l1 < 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
645 l1 = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
646
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
647 if (l2 >= height)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
648 l2 = height - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
649
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
650 topMargin = l1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
651 bottomMargin = l2;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
652 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
653
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
654 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
655 * Set the top scroll margin for the screen. If the current bottom margin
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
656 * is smaller it will become the top margin and the line will become the
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
657 * bottom margin.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
658 * @param l line that is the margin
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
659 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
660 public void setTopMargin(int l) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
661 if (l > bottomMargin) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
662 topMargin = bottomMargin;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
663 bottomMargin = l;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
664 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
665 else
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
666 topMargin = l;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
667
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
668 if (topMargin < 0) topMargin = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
669
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
670 if (bottomMargin >= height) bottomMargin = height - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
671 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
672
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
673 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
674 * Get the top scroll margin.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
675 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
676 public int getTopMargin() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
677 return topMargin;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
678 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
679
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
680 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
681 * Set the bottom scroll margin for the screen. If the current top margin
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
682 * is bigger it will become the bottom margin and the line will become the
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
683 * top margin.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
684 * @param l line that is the margin
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
685 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
686 public void setBottomMargin(int l) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
687 if (l < topMargin) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
688 bottomMargin = topMargin;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
689 topMargin = l;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
690 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
691 else
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
692 bottomMargin = l;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
693
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
694 if (topMargin < 0) topMargin = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
695
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
696 if (bottomMargin >= height) bottomMargin = height - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
697 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
698
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
699 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
700 * Get the bottom scroll margin.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
701 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
702 public int getBottomMargin() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
703 return bottomMargin;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
704 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
705
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
706 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
707 * Set scrollback buffer size.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
708 * @param amount new size of the buffer
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
709 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
710 public void setBufferSize(int amount) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
711 if (amount < height) amount = height;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
712
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
713 if (amount < maxBufSize) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
714 char cbuf[][] = new char[amount][width];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
715 int abuf[][] = new int[amount][width];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
716 int copyStart = bufSize - amount < 0 ? 0 : bufSize - amount;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
717 int copyCount = bufSize - amount < 0 ? bufSize : amount;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
718
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
719 if (charArray != null)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
720 System.arraycopy(charArray, copyStart, cbuf, 0, copyCount);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
721
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
722 if (charAttributes != null)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
723 System.arraycopy(charAttributes, copyStart, abuf, 0, copyCount);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
724
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
725 charArray = cbuf;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
726 charAttributes = abuf;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
727 bufSize = copyCount;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
728 screenBase = bufSize - height;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
729 windowBase = screenBase;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
730 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
731
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
732 maxBufSize = amount;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
733 update[0] = true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
734 redraw();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
735 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
736
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
737 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
738 * Retrieve current scrollback buffer size.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
739 * @see #setBufferSize
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
740 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
741 public int getBufferSize() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
742 return bufSize;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
743 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
744
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
745 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
746 * Retrieve maximum buffer Size.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
747 * @see #getBufferSize
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
748 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
749 public int getMaxBufferSize() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
750 return maxBufSize;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
751 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
752
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
753 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
754 * Change the size of the screen. This will include adjustment of the
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
755 * scrollback buffer.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
756 * @param w of the screen
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
757 * @param h of the screen
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
758 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
759 public void setScreenSize(int w, int h, boolean broadcast) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
760 char cbuf[][];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
761 int abuf[][];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
762 int maxSize = bufSize;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
763
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
764 if (w < 1 || h < 1) return;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
765
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
766 if (debug > 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
767 System.err.println("VDU: screen size [" + w + "," + h + "]");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
768
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
769 if (h > maxBufSize)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
770 maxBufSize = h;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
771
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
772 if (h > bufSize) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
773 bufSize = h;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
774 screenBase = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
775 windowBase = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
776 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
777
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
778 if (windowBase + h >= bufSize)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
779 windowBase = bufSize - h;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
780
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
781 if (screenBase + h >= bufSize)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
782 screenBase = bufSize - h;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
783
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
784 cbuf = new char[bufSize][w];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
785 abuf = new int[bufSize][w];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
786
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
787 for (int i = 0; i < bufSize; i++) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
788 Arrays.fill(cbuf[i], ' ');
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
789 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
790
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
791 if (bufSize < maxSize)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
792 maxSize = bufSize;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
793
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
794 int rowLength;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
795
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
796 if (charArray != null && charAttributes != null) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
797 for (int i = 0; i < maxSize && charArray[i] != null; i++) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
798 rowLength = charArray[i].length;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
799 System.arraycopy(charArray[i], 0, cbuf[i], 0,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
800 w < rowLength ? w : rowLength);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
801 System.arraycopy(charAttributes[i], 0, abuf[i], 0,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
802 w < rowLength ? w : rowLength);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
803 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
804 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
805
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
806 int C = getCursorColumn();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
807
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
808 if (C < 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
809 C = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
810 else if (C >= width)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
811 C = width - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
812
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
813 int R = getCursorRow();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
814
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
815 if (R < 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
816 R = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
817 else if (R >= height)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
818 R = height - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
819
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
820 setCursorPosition(C, R);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
821 charArray = cbuf;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
822 charAttributes = abuf;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
823 width = w;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
824 height = h;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
825 topMargin = 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
826 bottomMargin = h - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
827 update = new boolean[h + 1];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
828 update[0] = true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
829 /* FIXME: ???
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
830 if(resizeStrategy == RESIZE_FONT)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
831 setBounds(getBounds());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
832 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
833 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
834
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
835 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
836 * Get amount of rows on the screen.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
837 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
838 public int getRows() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
839 return height;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
840 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
841
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
842 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
843 * Get amount of columns on the screen.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
844 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
845 public int getColumns() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
846 return width;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
847 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
848
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
849 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
850 * Mark lines to be updated with redraw().
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
851 * @param l starting line
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
852 * @param n amount of lines to be updated
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
853 * @see #redraw
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
854 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
855 public void markLine(int l, int n) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
856 for (int i = 0; (i < n) && (l + i < height); i++)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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857 update[l + i + 1] = true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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858 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
859
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
860 // private static int checkBounds(int value, int lower, int upper) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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861 // if (value < lower)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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862 // return lower;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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863 // else if (value > upper)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
864 // return upper;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
865 // else
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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866 // return value;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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867 // }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
868
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
869 public void setDisplay(VDUDisplay display) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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870 this.display = display;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
871 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
872
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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873 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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874 * Trigger a redraw on the display.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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875 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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876 protected void redraw() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
877 if (display != null)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
878 display.redraw();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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879 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
880 }