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annotate src/org/tn5250j/framework/tn5250/ScreenPlanes.java @ 78:044b1a951925 tn5250
convert 5250 to vt320 attributes
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Sun, 15 Jun 2014 11:05:06 -0700 |
| parents | bf01d1eec5c6 |
| children | 77ac18bc1b2f |
| rev | line source |
|---|---|
| 3 | 1 /** |
| 2 * Title: ScreenPlanes.java | |
| 3 * Copyright: Copyright (c) 2001 | |
| 4 * Company: | |
| 5 * @author Kenneth J. Pouncey | |
| 6 * @version 0.5 | |
| 7 * | |
| 8 * Description: | |
| 9 * | |
| 10 * This program is free software; you can redistribute it and/or modify | |
| 11 * it under the terms of the GNU General Public License as published by | |
| 12 * the Free Software Foundation; either version 2, or (at your option) | |
| 13 * any later version. | |
| 14 * | |
| 15 * This program is distributed in the hope that it will be useful, | |
| 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 * GNU General Public License for more details. | |
| 19 * | |
| 20 * You should have received a copy of the GNU General Public License | |
| 21 * along with this software; see the file COPYING. If not, write to | |
| 22 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
| 23 * Boston, MA 02111-1307 USA | |
| 24 * | |
| 25 */ | |
| 26 package org.tn5250j.framework.tn5250; | |
| 27 | |
| 28 import static org.tn5250j.TN5250jConstants.*; | |
| 29 | |
| 30 import java.util.Properties; | |
| 31 | |
| 32 public class ScreenPlanes { | |
| 33 | |
| 34 private final Screen5250 scr; | |
| 35 private int screenSize; | |
| 36 private int numRows; | |
| 37 private int numCols; | |
| 38 private int errorLineNum; | |
| 39 | |
| 40 private static final int initAttr = 32; | |
| 41 private static final char initChar = 0; | |
| 42 | |
| 43 protected char[] screen; // text plane | |
| 44 private char[] screenAttr; // attribute plane | |
| 45 private char[] screenGUI; // gui plane | |
| 46 private char[] screenIsAttr; | |
| 47 private char[] fieldExtended; | |
| 48 private char[] screenField; | |
| 49 private char[] screenColor; // color plane | |
| 50 protected char[] screenExtended; // extended plane | |
| 51 private char[] screenIsChanged; | |
| 52 | |
| 53 private char[] initArray; | |
| 54 | |
| 55 private char[] errorLine; | |
| 56 private char[] errorLineAttr; | |
| 57 private char[] errorLineIsAttr; | |
| 58 private char[] errorLineGui; | |
| 59 | |
| 60 public ScreenPlanes(Screen5250 s5250, int size) { | |
| 61 | |
| 62 scr = s5250; | |
| 63 setSize(size); | |
| 64 } | |
| 65 | |
| 66 protected void setSize(int newSize) { | |
| 67 | |
| 68 screenSize = newSize; | |
| 69 | |
| 70 numCols = 80; | |
| 71 switch (newSize) { | |
| 72 case 24: | |
| 73 numRows = 24; | |
| 74 break; | |
| 75 case 27: | |
| 76 numRows = 27; | |
| 77 numCols = 132; | |
| 78 break; | |
| 79 | |
| 80 } | |
| 81 | |
| 82 // this is used here when size changes | |
| 83 setErrorLine(numRows); | |
| 84 | |
| 85 screenSize = numRows * numCols; | |
| 86 screen = new char[screenSize]; | |
| 87 screenAttr = new char[screenSize]; | |
| 88 screenIsAttr = new char[screenSize]; | |
| 89 screenGUI = new char[screenSize]; | |
| 90 screenColor = new char[screenSize]; | |
| 91 screenExtended = new char[screenSize]; | |
| 92 fieldExtended = new char[screenSize]; | |
| 93 screenIsChanged = new char[screenSize]; | |
| 94 screenField = new char[screenSize]; | |
| 95 | |
| 96 initArray = new char[screenSize]; | |
| 97 | |
| 98 initalizePlanes(); | |
| 99 } | |
| 100 | |
| 101 protected void setErrorLine (int line) { | |
| 102 | |
| 103 // * NOTE * for developers I have changed the send qry to pass different | |
| 104 // parameters to the host so check setsize for setting error line as well. | |
| 105 // | |
| 106 if (line == 0 || line > numRows) | |
| 107 errorLineNum = numRows; | |
| 108 else | |
| 109 errorLineNum = line; | |
| 110 } | |
| 111 | |
| 112 /** | |
| 113 * Returns the current error line number | |
| 114 * | |
| 115 * @return current error line number | |
| 116 */ | |
| 117 protected int getErrorLine() { | |
| 118 return errorLineNum; | |
| 119 } | |
| 120 | |
| 121 protected void saveErrorLine() { | |
| 122 | |
| 123 // if there is already an error line saved then do not save it again | |
| 124 // This signifies that there was a previous error and the original error | |
| 125 // line was not restored yet. | |
| 126 if (errorLine == null) { | |
| 127 errorLine = new char[numCols]; | |
| 128 errorLineAttr = new char[numCols]; | |
| 129 errorLineIsAttr = new char[numCols]; | |
| 130 errorLineGui = new char[numCols]; | |
| 131 | |
| 132 int r = scr.getPos(errorLineNum-1,0); | |
| 133 | |
| 134 for (int x = 0;x < numCols; x++) { | |
| 135 errorLine[x] = screen[r+x]; | |
| 136 errorLineAttr[x] = screenAttr[r+x]; | |
| 137 errorLineIsAttr[x] = screenIsAttr[r+x]; | |
| 138 errorLineGui[x] = screenGUI[r+x]; | |
| 139 } | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 /** | |
| 144 * Restores the error line characters from the save buffer. | |
| 145 * | |
| 146 * @see #saveErrorLine() | |
| 147 */ | |
| 148 protected void restoreErrorLine() { | |
| 149 | |
| 150 if (errorLine != null) { | |
| 151 int r = scr.getPos(errorLineNum - 1, 0); | |
| 152 | |
| 153 for (int x = 0; x < numCols - 1; x++) { | |
| 154 setScreenCharAndAttr(r+x,errorLine[x],errorLineAttr[x], | |
| 155 (errorLineIsAttr[x] == '1' ? true : false)); | |
| 156 screenGUI[x] = errorLineGui[x]; | |
| 157 } | |
| 158 | |
| 159 errorLine = null; | |
| 160 errorLineAttr = null; | |
| 161 errorLineIsAttr = null; | |
| 162 errorLineGui = null; | |
| 163 } | |
| 164 } | |
| 165 | |
| 166 protected boolean isErrorLineSaved() { | |
| 167 return errorLine == null ? false : true; | |
| 168 } | |
| 169 | |
| 170 protected void setScreenCharAndAttr(int pos, char c, int attr, boolean isAttr) { | |
| 171 | |
| 172 screen[pos] = c; | |
| 173 screenAttr[pos] = (char)attr; | |
| 174 disperseAttribute(pos,attr); | |
| 175 screenIsAttr[pos] = (isAttr ? (char)1 : (char)0); | |
| 176 screenGUI[pos] = NO_GUI; | |
| 177 | |
| 178 } | |
| 179 | |
| 180 protected void setScreenAttr(int pos, int attr, boolean isAttr) { | |
| 181 | |
| 182 screenAttr[pos] = (char)attr; | |
| 183 screenIsAttr[pos] = isAttr ? (char)1 : (char)0; | |
| 184 disperseAttribute(pos,attr); | |
| 185 screenGUI[pos] = initChar; | |
| 186 | |
| 187 } | |
| 188 | |
| 189 protected void setScreenAttr(int pos, int attr) { | |
| 190 | |
| 191 screenAttr[pos] = (char)attr; | |
| 192 //screenGUI[pos] = initChar; | |
| 193 disperseAttribute(pos,attr); | |
| 194 | |
| 195 } | |
| 196 | |
| 197 protected void setScreenFieldAttr(int pos, int attr) { | |
| 198 | |
| 199 screenField[pos] = (char)attr; | |
| 200 | |
| 201 } | |
| 202 | |
| 203 protected final void setChar(int pos, char c) { | |
| 204 screenIsChanged[pos] = screen[pos] == c ? '0' : '1'; | |
| 205 screen[pos] = c; | |
| 206 if (screenIsAttr[pos] == 1) | |
| 207 setScreenCharAndAttr(pos,c,32,false); | |
| 208 | |
| 209 } | |
| 210 | |
| 211 protected final char getChar(int pos) { | |
| 212 return screen[pos]; | |
| 213 } | |
| 214 | |
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215 protected final char getCharColor(int pos) { |
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216 return screenColor[pos]; |
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217 } |
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218 |
| 3 | 219 protected final int getCharAttr(int pos) { |
| 220 return screenAttr[pos]; | |
| 221 } | |
| 222 | |
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223 protected final char getCharExtended(int pos) { |
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224 return screenExtended[pos]; |
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225 } |
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226 |
| 3 | 227 protected final boolean isAttributePlace(int pos) { |
| 228 return screenIsAttr[pos] == 1 ? true : false; | |
| 229 } | |
| 230 | |
| 231 public final void setUseGUI(int pos, int which) { | |
| 232 | |
| 233 screenIsChanged[pos] = screenGUI[pos] == which ? '0' : '1'; | |
| 234 screenGUI[pos] = (char)which; | |
| 235 } | |
| 236 | |
| 237 private void disperseAttribute(int pos, int attr) { | |
| 238 | |
| 239 char c = 0; | |
| 240 char cs = 0; | |
| 241 char ul = 0; | |
| 242 char nd = 0; | |
| 243 | |
| 244 if(attr == 0) | |
| 245 return; | |
| 246 | |
| 247 switch(attr) { | |
| 248 case 32: // green normal | |
| 249 c = ATTR_32; | |
| 250 break; | |
| 251 | |
| 252 case 33: // green/revers | |
| 253 c = ATTR_33; | |
| 254 break; | |
| 255 | |
| 256 case 34: // white normal | |
| 257 c = ATTR_34; | |
| 258 break; | |
| 259 | |
| 260 case 35: // white/reverse | |
| 261 c = ATTR_35; | |
| 262 break; | |
| 263 | |
| 264 case 36: // green/underline | |
| 265 c = ATTR_36; | |
| 266 ul = EXTENDED_5250_UNDERLINE; | |
| 267 break; | |
| 268 | |
| 269 case 37: // green/reverse/underline | |
| 270 c = ATTR_37; | |
| 271 ul = EXTENDED_5250_UNDERLINE; | |
| 272 break; | |
| 273 | |
| 274 case 38: // white/underline | |
| 275 c = ATTR_38; | |
| 276 ul = EXTENDED_5250_UNDERLINE; | |
| 277 break; | |
| 278 | |
| 279 case 39: | |
| 280 nd = EXTENDED_5250_NON_DSP; | |
| 281 break; | |
| 282 | |
| 283 case 40: | |
| 284 case 42: // red/normal | |
| 285 c = ATTR_40; | |
| 286 break; | |
| 287 | |
| 288 case 41: | |
| 289 case 43: // red/reverse | |
| 290 c = ATTR_41; | |
| 291 break; | |
| 292 | |
| 293 case 44: | |
| 294 case 46: // red/underline | |
| 295 c = ATTR_44; | |
| 296 ul = EXTENDED_5250_UNDERLINE; | |
| 297 break; | |
| 298 | |
| 299 case 45: // red/reverse/underline | |
| 300 c = ATTR_45; | |
| 301 ul = EXTENDED_5250_UNDERLINE; | |
| 302 break; | |
| 303 | |
| 304 case 47: | |
| 305 nd = EXTENDED_5250_NON_DSP; | |
| 306 break; | |
| 307 | |
| 308 case 48: | |
| 309 c = ATTR_48; | |
| 310 cs = EXTENDED_5250_COL_SEP; | |
| 311 break; | |
| 312 | |
| 313 case 49: | |
| 314 c = ATTR_49; | |
| 315 cs = EXTENDED_5250_COL_SEP; | |
| 316 break; | |
| 317 | |
| 318 case 50: | |
| 319 c = ATTR_50; | |
| 320 cs = EXTENDED_5250_COL_SEP; | |
| 321 break; | |
| 322 | |
| 323 case 51: | |
| 324 c = ATTR_51; | |
| 325 cs = EXTENDED_5250_COL_SEP; | |
| 326 break; | |
| 327 | |
| 328 case 52: | |
| 329 c = ATTR_52; | |
| 330 // colSep = true; | |
| 331 ul = EXTENDED_5250_UNDERLINE; | |
| 332 break; | |
| 333 | |
| 334 case 53: | |
| 335 c = ATTR_53; | |
| 336 // colSep = true; | |
| 337 ul = EXTENDED_5250_UNDERLINE; | |
| 338 break; | |
| 339 | |
| 340 case 54: | |
| 341 c = ATTR_54; | |
| 342 // colSep = true; | |
| 343 ul = EXTENDED_5250_UNDERLINE; | |
| 344 break; | |
| 345 | |
| 346 case 55: | |
| 347 nd = EXTENDED_5250_NON_DSP; | |
| 348 break; | |
| 349 | |
| 350 case 56: // pink | |
| 351 c = ATTR_56; | |
| 352 break; | |
| 353 | |
| 354 case 57: // pink/reverse | |
| 355 c = ATTR_57; | |
| 356 break; | |
| 357 | |
| 358 case 58: // blue/reverse | |
| 359 c = ATTR_58; | |
| 360 break; | |
| 361 | |
| 362 case 59: // blue | |
| 363 c = ATTR_59; | |
| 364 break; | |
| 365 | |
| 366 case 60: // pink/underline | |
| 367 c = ATTR_60; | |
| 368 ul = EXTENDED_5250_UNDERLINE; | |
| 369 break; | |
| 370 | |
| 371 case 61: // pink/reverse/underline | |
| 372 c = ATTR_61; | |
| 373 ul = EXTENDED_5250_UNDERLINE; | |
| 374 break; | |
| 375 | |
| 376 case 62: // blue/underline | |
| 377 c = ATTR_62; | |
| 378 ul = EXTENDED_5250_UNDERLINE; | |
| 379 break; | |
| 380 | |
| 381 case 63: // nondisplay | |
| 382 nd = EXTENDED_5250_NON_DSP; | |
| 383 cs = EXTENDED_5250_COL_SEP; | |
| 384 break; | |
| 385 default: | |
| 386 c = ( COLOR_BG_BLACK << 8 & 0xff00) | | |
| 387 ( COLOR_FG_YELLOW & 0xff); | |
| 388 break; | |
| 389 | |
| 390 } | |
| 391 | |
| 392 screenColor[pos] = c; | |
| 393 screenExtended[pos] = (char)(ul | cs | nd); | |
| 394 } | |
| 395 | |
| 396 protected void initalizePlanes () { | |
| 397 | |
| 398 char c = (COLOR_BG_BLACK << 8 & 0xff00) | | |
| 399 (COLOR_FG_GREEN & 0xff); | |
| 400 | |
| 401 for (int y = 0;y < screenSize; y++) { | |
| 402 | |
| 403 screenAttr[y] = initAttr; | |
| 404 screenColor[y] = c; | |
| 405 | |
| 406 } | |
| 407 | |
| 408 // here we will just copy the initialized plane onto the other planes | |
| 409 // using arraycopy which will be faster. I hope. | |
| 410 | |
| 411 System.arraycopy(initArray,0,screen,0,screenSize); | |
| 412 System.arraycopy(initArray,0,screenGUI,0,screenSize); | |
| 413 System.arraycopy(initArray,0,screenIsAttr,0,screenSize); | |
| 414 System.arraycopy(initArray,0,screenExtended,0,screenSize); | |
| 415 System.arraycopy(initArray,0,fieldExtended,0,screenSize); | |
| 416 System.arraycopy(initArray,0,screenField,0,screenSize); | |
| 417 } | |
| 418 | |
| 419 protected void initalizeFieldPlanes () { | |
| 420 System.arraycopy(initArray,0,fieldExtended,0,screenSize); | |
| 421 System.arraycopy(initArray,0,screenField,0,screenSize); | |
| 422 } | |
| 423 | |
| 424 protected final int getWhichGUI(int pos) { | |
| 425 | |
| 426 return screenGUI[pos]; | |
| 427 } | |
| 428 | |
| 429 protected final boolean isChanged(int pos) { | |
| 430 return screenIsChanged[pos] == 0 ? false : true; | |
| 431 } | |
| 432 | |
| 433 protected final boolean isUseGui(int pos) { | |
| 434 return screenGUI[pos] == NO_GUI ? false : true; | |
| 435 } | |
| 436 | |
| 437 /** | |
| 438 * Return the data associated with the plane that is passed. | |
| 439 * | |
| 440 * @param from Position from which to start | |
| 441 * @param to Position to end | |
| 442 * @param plane From which plane to obtain the data | |
| 443 * @return Character array containing the data requested | |
| 444 */ | |
| 445 protected synchronized char[] getPlaneData(int from, int to, int plane) { | |
| 446 | |
| 447 int len = (to - from); | |
| 448 | |
| 449 char[] planeChars = new char[len + 1]; | |
| 450 | |
| 451 switch (plane) { | |
| 452 case PLANE_TEXT: | |
| 453 System.arraycopy(screen, from, planeChars, 0, len); | |
| 454 break; | |
| 455 case PLANE_ATTR: | |
| 456 System.arraycopy(screenAttr, from, planeChars, 0, len); | |
| 457 break; | |
| 458 case PLANE_COLOR: | |
| 459 System.arraycopy(screenColor, from, planeChars, 0, len); | |
| 460 break; | |
| 461 case PLANE_EXTENDED: | |
| 462 System.arraycopy(screenExtended, from, planeChars, 0, len); | |
| 463 break; | |
| 464 case PLANE_EXTENDED_GRAPHIC: | |
| 465 System.arraycopy(screenGUI, from, planeChars, 0, len); | |
| 466 break; | |
| 467 case PLANE_FIELD: | |
| 468 System.arraycopy(screenField, from, planeChars, 0, len); | |
| 469 break; | |
| 470 case PLANE_IS_ATTR_PLACE: | |
| 471 System.arraycopy(screenIsAttr, from, planeChars, 0, len); | |
| 472 break; | |
| 473 default: | |
| 474 System.arraycopy(screen, from, planeChars, 0, len); | |
| 475 | |
| 476 } | |
| 477 return planeChars; | |
| 478 | |
| 479 } | |
| 480 | |
| 481 /** | |
| 482 * Converts a linear presentation space position to its corresponding row. | |
| 483 * | |
| 484 * @param pos The position to be converted | |
| 485 * @return The row which corresponds to the position given | |
| 486 * @throws OhioException | |
| 487 */ | |
| 488 private int convertPosToRow(int pos) { | |
| 489 | |
| 490 return (pos / numCols) + 1; | |
| 491 | |
| 492 } | |
| 493 | |
| 494 /** | |
| 495 * Converts a linear presentation space position to its corresponding column. | |
| 496 * | |
| 497 * @param pos The position to be converted | |
| 498 * @return The column which corresponds to the position given | |
| 499 * @throws OhioException | |
| 500 */ | |
| 501 private int convertPosToColumn(int pos) { | |
| 502 | |
| 503 return (pos % numCols) + 1; | |
| 504 | |
| 505 } | |
| 506 | |
| 507 /** | |
| 508 * | |
| 509 * Converts a row and column coordinate to its corresponding linear position. | |
| 510 * | |
| 511 * @param row - The row of the coordinate | |
| 512 * @param col - The column of the coordinate | |
| 513 * @return The linear position which corresponds to the coordinate given. | |
| 514 * @throws OhioException | |
| 515 */ | |
| 516 private int convertRowColToPos(int row, int col) { | |
| 517 | |
| 518 | |
| 519 return (row - 1) * numCols + col -1; | |
| 520 | |
| 521 } | |
| 522 | |
| 523 | |
| 524 /** | |
| 525 * <p> | |
| 526 * GetScreen retrieves the various planes associated with the presentation | |
| 527 * space. The data is returned as a linear array of character values in the | |
| 528 * array provided. The array is not terminated by a null character except | |
| 529 * when data is retrieved from the text plane, in which case a single null | |
| 530 * character is appended. | |
| 531 * </p> | |
| 532 * <p> | |
| 533 * The application must supply a buffer for the returned data and the length | |
| 534 * of the buffer. Data is returned starting from the beginning of the | |
| 535 * presentation space and continuing until the buffer is full or the entire | |
| 536 * plane has been copied. For text plane data, the buffer must include one | |
| 537 * extra position for the terminating null character. | |
| 538 * <p> | |
| 539 * | |
| 540 * @param buffer | |
| 541 * @param bufferLength | |
| 542 * @param plane | |
| 543 * @return The number of characters copied to the buffer | |
| 544 * @throws OhioException | |
| 545 */ | |
| 546 public synchronized int GetScreen(char buffer[], int bufferLength, int plane) { | |
| 547 | |
| 548 return GetScreen(buffer,bufferLength,0,screenSize,plane); | |
| 549 | |
| 550 } | |
| 551 | |
| 552 /** | |
| 553 * <p> | |
| 554 * GetScreen retrieves the various planes associated with the presentation | |
| 555 * space. The data is returned as a linear array of character values in the | |
| 556 * array provided. The array is not terminated by a null character except | |
| 557 * when data is retrieved from the text plane, in which case a single null | |
| 558 * character is appended. | |
| 559 * </p> | |
| 560 * <p> | |
| 561 * The application must supply a buffer for the returned data and the length | |
| 562 * of the buffer. Data is returned starting from the given position and | |
| 563 * continuing until the specified number of characters have been copied, the | |
| 564 * buffer is full or the entire plane has been copied. For text plane data, | |
| 565 * the buffer must include one extra position for the terminating null character. | |
| 566 * </p> | |
| 567 * | |
| 568 * @param buffer | |
| 569 * @param bufferLength | |
| 570 * @param from | |
| 571 * @param length | |
| 572 * @param plane | |
| 573 * @return The number of characters copied to the buffer | |
| 574 * @throws OhioException | |
| 575 */ | |
| 576 public synchronized int GetScreen(char buffer[], int bufferLength, int from, | |
| 577 int length, int plane) | |
| 578 { | |
| 579 // if(buffer == null) | |
| 580 // throw new OhioException(sessionVT.getSessionConfiguration(), | |
| 581 // OhioScreen.class.getName(), "osohio.screen.ohio00300", 1); | |
| 582 if(buffer == null) | |
| 583 return 0; | |
| 584 | |
| 585 int min = Math.min(Math.min(buffer.length, bufferLength), screenSize); | |
| 586 if ((from + min) > screenSize) { | |
| 587 min = screenSize - from; | |
| 588 } | |
| 589 | |
| 590 char[] pd = getPlaneData(from,from + min,plane); | |
| 591 if(pd != null) { | |
| 592 System.arraycopy(pd, 0, buffer, 0, min); | |
| 593 return pd.length; | |
| 594 } | |
| 595 | |
| 596 return 0; | |
| 597 } | |
| 598 | |
| 599 /** | |
| 600 * <p> | |
| 601 * GetScreen retrieves the various planes associated with the presentation | |
| 602 * space. The data is returned as a linear array of character values in the | |
| 603 * array provided. The array is not terminated by a null character except | |
| 604 * when data is retrieved from the text plane, in which case a single null | |
| 605 * character is appended. | |
| 606 * </p> | |
| 607 * <p> | |
| 608 * The application must supply a buffer for the returned data and the length | |
| 609 * of the buffer. Data is returned starting from the given coordinates and | |
| 610 * continuing until the specified number of characters have been copied, | |
| 611 * the buffer is full, or the entire plane has been copied. For text plane | |
| 612 * data, the buffer must include one extra position for the terminating null | |
| 613 * character. | |
| 614 * </p> | |
| 615 * | |
| 616 * @param buffer | |
| 617 * @param bufferLength | |
| 618 * @param row | |
| 619 * @param col | |
| 620 * @param length | |
| 621 * @param plane | |
| 622 * @return The number of characters copied to the buffer. | |
| 623 * @throws OhioException | |
| 624 */ | |
| 625 public synchronized int GetScreen(char buffer[], int bufferLength, int row, | |
| 626 int col, int length, int plane) | |
| 627 // throws OhioException { | |
| 628 { | |
| 629 // Call GetScreen function after converting row and column to | |
| 630 // a position. | |
| 631 return GetScreen(buffer,bufferLength, convertRowColToPos(row,col), | |
| 632 length, plane); | |
| 633 } | |
| 634 | |
| 635 /** | |
| 636 * <p> | |
| 637 * GetScreenRect retrieves data from the various planes associated with the | |
| 638 * presentation space. The data is returned as a linear array of character | |
| 639 * values in the buffer provided. | |
| 640 * </p> | |
| 641 * | |
| 642 * <p> | |
| 643 * The application supplies two positions that represent opposing corners of | |
| 644 * a rectangle within the presentation space. The starting and ending | |
| 645 * positions can have any spatial relationship to each other. The data | |
| 646 * returned starts from the row containing the upper-most point to the row | |
| 647 * containing the lower-most point, and from the left-most column to the | |
| 648 * right-most column. | |
| 649 * </p> | |
| 650 * <p> | |
| 651 * The specified buffer must be at least large enough to contain the number | |
| 652 * of characters in the rectangle. If the buffer is too small, no data is | |
| 653 * copied and zero is returned by the method. Otherwise, the method returns | |
| 654 * the number of characters copied. | |
| 655 * </p> | |
| 656 * | |
| 657 * @param buffer | |
| 658 * @param bufferLength | |
| 659 * @param startPos | |
| 660 * @param endPos | |
| 661 * @param plane | |
| 662 * @return The number of characters copied to the buffer | |
| 663 * @throws OhioException | |
| 664 */ | |
| 665 protected int GetScreenRect(char buffer[], int bufferLength, | |
| 666 int startPos, int endPos, int plane) | |
| 667 // throws OhioException { | |
| 668 { | |
| 669 // We will use the row,col routine here because it is easier to use | |
| 670 // row colum than it is for position since I wrote the other first and | |
| 671 // am to lazy to implement it here | |
| 672 // Maybe it would be faster to do it the other way? | |
| 673 int startRow = convertPosToRow(startPos); | |
| 674 int startCol = convertPosToColumn(startPos); | |
| 675 int endRow = convertPosToRow(endPos); | |
| 676 int endCol = convertPosToColumn(endPos); | |
| 677 return GetScreenRect(buffer, bufferLength, startRow, startCol, | |
| 678 endRow, endCol, plane); | |
| 679 | |
| 680 } | |
| 681 | |
| 682 /** | |
| 683 * <p> | |
| 684 * GetScreenRect retrieves data from the various planes associated with the | |
| 685 * presentation space. The data is returned as a linear array of character | |
| 686 * values in the buffer provided. The buffer is not terminated by a null | |
| 687 * character. | |
| 688 * </p> | |
| 689 * <p> | |
| 690 * The application supplies two coordinates that represent opposing corners | |
| 691 * of a rectangle within the presentation space. The starting and ending | |
| 692 * coordinates can have any spatial relationship to each other. The data | |
| 693 * returned starts from the row containing the upper-most point to the row | |
| 694 * containing the lower-most point, and from the left-most column to the | |
| 695 * right-most column. | |
| 696 * </p> | |
| 697 * <p> | |
| 698 * The specified buffer must be at least large enough to contain the number | |
| 699 * of characters in the rectangle. If the buffer is too small, no data is | |
| 700 * copied and zero is returned by the method. Otherwise, the method returns | |
| 701 * the number of characters copied. | |
| 702 * </p> | |
| 703 * | |
| 704 * @param buffer | |
| 705 * @param bufferLength | |
| 706 * @param startRow | |
| 707 * @param startCol | |
| 708 * @param endRow | |
| 709 * @param endCol | |
| 710 * @param plane | |
| 711 * @return The number characters copied to the buffer | |
| 712 * @throws OhioException | |
| 713 */ | |
| 714 protected int GetScreenRect(char buffer[], int bufferLength, | |
| 715 int startRow, int startCol, | |
| 716 int endRow, int endCol, int plane) | |
| 717 // throws OhioException { | |
| 718 { | |
| 719 // number of bytes obtained | |
| 720 int numBytes = 0; | |
| 721 | |
| 722 // lets check the row range. If they are reversed then we need to | |
| 723 // place them in the correct order. | |
| 724 if(startRow > endRow) { | |
| 725 int r = startRow; | |
| 726 startRow = endRow; | |
| 727 endRow = r; | |
| 728 } | |
| 729 // lets check the column range. If they are reversed then we need to | |
| 730 // place them in the correct order. | |
| 731 if(startCol > endCol) { | |
| 732 int c = startCol; | |
| 733 startCol = endCol; | |
| 734 endCol = c; | |
| 735 } | |
| 736 int numCols = (endCol - startCol) + 1; | |
| 737 int numRows = (endRow - startRow) + 1; | |
| 738 | |
| 739 // lets make sure it is within the bounds of the character array passed | |
| 740 // if not the return as zero bytes where read as per documentation. | |
| 741 if(numCols * numRows <= bufferLength) { | |
| 742 | |
| 743 // make sure it is one larger. I guess for other languanges to | |
| 744 // reference like in C which is terminated by a zero byte at the end | |
| 745 // of strings. | |
| 746 char cb[] = new char[numCols + 1]; | |
| 747 int charOffset = 0; | |
| 748 int bytes = 0; | |
| 749 | |
| 750 // now let's loop through and get the screen information for | |
| 751 // each row; | |
| 752 for(int row = startRow; row <= endRow;) { | |
| 753 if((bytes = GetScreen(cb, cb.length, row, startCol, numCols, plane)) != 0) { | |
| 754 System.arraycopy(cb, 0, buffer, charOffset, numCols); | |
| 755 } | |
| 756 row++; | |
| 757 charOffset += numCols; | |
| 758 // make sure we count the number of bytes returned | |
| 759 numBytes += bytes; | |
| 760 } | |
| 761 | |
| 762 } | |
| 763 | |
| 764 return numBytes; | |
| 765 } | |
| 766 | |
| 767 private int isOption(char[] screen, | |
| 768 int x, | |
| 769 int lenScreen, | |
| 770 int numPref, | |
| 771 int numSuff, | |
| 772 char suff) { | |
| 773 boolean hs =true; | |
| 774 int sp = x; | |
| 775 int os = 0; | |
| 776 // check to the left for option | |
| 777 while (--sp >=0 && screen[sp] <= ' ' ) { | |
| 778 | |
| 779 if (x - sp > numPref || screen[sp] == suff|| | |
| 780 screen[sp] == '.' || | |
| 781 screen[sp] == '*') { | |
| 782 hs =false; | |
| 783 break; | |
| 784 } | |
| 785 } | |
| 786 | |
| 787 // now lets check for how long the option is it has to be numPref or less | |
| 788 os = sp; | |
| 789 while (hs && --os > 0 && screen[os] > ' ' ) { | |
| 790 | |
| 791 if (sp - os >= numPref || screen[os] == suff || | |
| 792 screen[os] == '.' || | |
| 793 screen[os] == '*') { | |
| 794 hs = false; | |
| 795 break; | |
| 796 } | |
| 797 } | |
| 798 if (sp - os > 1 && !Character.isDigit(screen[os+1])) { | |
| 799 hs = false; | |
| 800 } | |
| 801 | |
| 802 sp = x; | |
| 803 | |
| 804 if (Character.isDigit(screen[sp+1])) | |
| 805 hs = false; | |
| 806 // now lets make sure there are no more than numSuff spaces after option | |
| 807 while (hs && (++sp < lenScreen && screen[sp] <= ' ' | |
| 808 || screen[sp] == suff )) { | |
| 809 if (sp - x >= numSuff || screen[sp] == suff || | |
| 810 screen[sp] == '.' || | |
| 811 screen[sp] == '*') { | |
| 812 hs =false; | |
| 813 break; | |
| 814 } | |
| 815 } | |
| 816 if (hs && !Character.isLetterOrDigit(screen[sp])) | |
| 817 hs = false; | |
| 818 if (hs) { | |
| 819 return os; | |
| 820 } | |
| 821 return -1; | |
| 822 } | |
| 823 | |
| 824 } |