| 1 | /** |
| 2 | * Jexer - Java Text User Interface |
| 3 | * |
| 4 | * Version: $Id$ |
| 5 | * |
| 6 | * Author: Kevin Lamonte, <a href="mailto:kevin.lamonte@gmail.com">kevin.lamonte@gmail.com</a> |
| 7 | * |
| 8 | * License: LGPLv3 or later |
| 9 | * |
| 10 | * Copyright: This module is licensed under the GNU Lesser General |
| 11 | * Public License Version 3. Please see the file "COPYING" in this |
| 12 | * directory for more information about the GNU Lesser General Public |
| 13 | * License Version 3. |
| 14 | * |
| 15 | * Copyright (C) 2015 Kevin Lamonte |
| 16 | * |
| 17 | * This program is free software; you can redistribute it and/or |
| 18 | * modify it under the terms of the GNU Lesser General Public License |
| 19 | * as published by the Free Software Foundation; either version 3 of |
| 20 | * the License, or (at your option) any later version. |
| 21 | * |
| 22 | * This program is distributed in the hope that it will be useful, but |
| 23 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 25 | * General Public License for more details. |
| 26 | * |
| 27 | * You should have received a copy of the GNU Lesser General Public |
| 28 | * License along with this program; if not, see |
| 29 | * http://www.gnu.org/licenses/, or write to the Free Software |
| 30 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 31 | * 02110-1301 USA |
| 32 | */ |
| 33 | package jexer.io; |
| 34 | |
| 35 | import jexer.bits.Cell; |
| 36 | import jexer.bits.CellAttributes; |
| 37 | import jexer.bits.GraphicsChars; |
| 38 | |
| 39 | /** |
| 40 | * This class represents a text-based screen. Drawing operations write to a |
| 41 | * logical screen. |
| 42 | */ |
| 43 | public abstract class Screen { |
| 44 | |
| 45 | /** |
| 46 | * Emit debugging to stderr |
| 47 | */ |
| 48 | public boolean debugToStderr; |
| 49 | |
| 50 | /** |
| 51 | * Width of the visible window |
| 52 | */ |
| 53 | protected int width; |
| 54 | |
| 55 | /** |
| 56 | * Height of the visible window |
| 57 | */ |
| 58 | protected int height; |
| 59 | |
| 60 | /** |
| 61 | * Drawing offset for x |
| 62 | */ |
| 63 | public int offsetX; |
| 64 | |
| 65 | /** |
| 66 | * Drawing offset for y |
| 67 | */ |
| 68 | public int offsetY; |
| 69 | |
| 70 | /** |
| 71 | * Ignore anything drawn right of clipRight |
| 72 | */ |
| 73 | public int clipRight; |
| 74 | |
| 75 | /** |
| 76 | * Ignore anything drawn below clipBottom |
| 77 | */ |
| 78 | public int clipBottom; |
| 79 | |
| 80 | /** |
| 81 | * Ignore anything drawn left of clipLeft |
| 82 | */ |
| 83 | public int clipLeft; |
| 84 | |
| 85 | /** |
| 86 | * Ignore anything drawn above clipTop |
| 87 | */ |
| 88 | public int clipTop; |
| 89 | |
| 90 | /** |
| 91 | * The physical screen last sent out on flush() |
| 92 | */ |
| 93 | protected Cell [][] physical; |
| 94 | |
| 95 | /** |
| 96 | * The logical screen being rendered to |
| 97 | */ |
| 98 | protected Cell [][] logical; |
| 99 | |
| 100 | /** |
| 101 | * When true, logical != physical |
| 102 | */ |
| 103 | public boolean dirty; |
| 104 | |
| 105 | /** |
| 106 | * Set if the user explicitly wants to redraw everything starting with a |
| 107 | * ECMATerminal.clearAll() |
| 108 | */ |
| 109 | protected boolean reallyCleared; |
| 110 | |
| 111 | /** |
| 112 | * If true, the cursor is visible and should be placed onscreen at |
| 113 | * (cursorX, cursorY) during a call to flushPhysical() |
| 114 | */ |
| 115 | protected boolean cursorVisible; |
| 116 | |
| 117 | /** |
| 118 | * Cursor X position if visible |
| 119 | */ |
| 120 | protected int cursorX; |
| 121 | |
| 122 | /** |
| 123 | * Cursor Y position if visible |
| 124 | */ |
| 125 | protected int cursorY; |
| 126 | |
| 127 | /** |
| 128 | * Get the attributes at one location. |
| 129 | * |
| 130 | * @param x column coordinate. 0 is the left-most column. |
| 131 | * @param y row coordinate. 0 is the top-most row. |
| 132 | * @return attributes at (x, y) |
| 133 | */ |
| 134 | public CellAttributes getAttrXY(int x, int y) { |
| 135 | CellAttributes attr = new CellAttributes(); |
| 136 | attr.setTo(logical[x][y]); |
| 137 | return attr; |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Set the attributes at one location. |
| 142 | * |
| 143 | * @param x column coordinate. 0 is the left-most column. |
| 144 | * @param y row coordinate. 0 is the top-most row. |
| 145 | * @param attr attributes to use (bold, foreColor, backColor) |
| 146 | * @param clip if true, honor clipping/offset |
| 147 | */ |
| 148 | public void putAttrXY(int x, int y, CellAttributes attr) { |
| 149 | putAttrXY(x, y, attr, true); |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Set the attributes at one location. |
| 154 | * |
| 155 | * @param x column coordinate. 0 is the left-most column. |
| 156 | * @param y row coordinate. 0 is the top-most row. |
| 157 | * @param attr attributes to use (bold, foreColor, backColor) |
| 158 | * @param clip if true, honor clipping/offset |
| 159 | */ |
| 160 | public void putAttrXY(int x, int y, CellAttributes attr, boolean clip) { |
| 161 | |
| 162 | int X = x; |
| 163 | int Y = y; |
| 164 | |
| 165 | if (clip) { |
| 166 | if ((x < clipLeft) || (x >= clipRight) || |
| 167 | (y < clipTop) || (y >= clipBottom)) { |
| 168 | return; |
| 169 | } |
| 170 | X += offsetX; |
| 171 | Y += offsetY; |
| 172 | } |
| 173 | |
| 174 | if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) { |
| 175 | dirty = true; |
| 176 | logical[X][Y].foreColor = attr.foreColor; |
| 177 | logical[X][Y].backColor = attr.backColor; |
| 178 | logical[X][Y].bold = attr.bold; |
| 179 | logical[X][Y].blink = attr.blink; |
| 180 | logical[X][Y].reverse = attr.reverse; |
| 181 | logical[X][Y].underline = attr.underline; |
| 182 | logical[X][Y].protect = attr.protect; |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Fill the entire screen with one character with attributes. |
| 188 | * |
| 189 | * @param ch character to draw |
| 190 | * @param attr attributes to use (bold, foreColor, backColor) |
| 191 | */ |
| 192 | public void putAll(char ch, CellAttributes attr) { |
| 193 | for (int x = 0; x < width; x++) { |
| 194 | for (int y = 0; y < height; y++) { |
| 195 | putCharXY(x, y, ch, attr); |
| 196 | } |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Render one character with attributes. |
| 202 | * |
| 203 | * @param x column coordinate. 0 is the left-most column. |
| 204 | * @param y row coordinate. 0 is the top-most row. |
| 205 | * @param ch character + attributes to draw |
| 206 | */ |
| 207 | public void putCharXY(int x, int y, Cell ch) { |
| 208 | putCharXY(x, y, ch.ch, ch); |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Render one character with attributes. |
| 213 | * |
| 214 | * @param x column coordinate. 0 is the left-most column. |
| 215 | * @param y row coordinate. 0 is the top-most row. |
| 216 | * @param ch character to draw |
| 217 | * @param attr attributes to use (bold, foreColor, backColor) |
| 218 | */ |
| 219 | public void putCharXY(int x, int y, char ch, CellAttributes attr) { |
| 220 | if ((x < clipLeft) || (x >= clipRight) || |
| 221 | (y < clipTop) || (y >= clipBottom)) { |
| 222 | return; |
| 223 | } |
| 224 | |
| 225 | int X = x + offsetX; |
| 226 | int Y = y + offsetY; |
| 227 | |
| 228 | // stderr.writefln("putCharXY: %d, %d, %c", X, Y, ch); |
| 229 | |
| 230 | if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) { |
| 231 | dirty = true; |
| 232 | |
| 233 | // Do not put control characters on the display |
| 234 | assert(ch >= 0x20); |
| 235 | assert(ch != 0x7F); |
| 236 | |
| 237 | logical[X][Y].ch = ch; |
| 238 | logical[X][Y].foreColor = attr.foreColor; |
| 239 | logical[X][Y].backColor = attr.backColor; |
| 240 | logical[X][Y].bold = attr.bold; |
| 241 | logical[X][Y].blink = attr.blink; |
| 242 | logical[X][Y].reverse = attr.reverse; |
| 243 | logical[X][Y].underline = attr.underline; |
| 244 | logical[X][Y].protect = attr.protect; |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * Render one character without changing the underlying attributes. |
| 250 | * |
| 251 | * @param x column coordinate. 0 is the left-most column. |
| 252 | * @param y row coordinate. 0 is the top-most row. |
| 253 | * @param ch character to draw |
| 254 | */ |
| 255 | public void putCharXY(int x, int y, char ch) { |
| 256 | if ((x < clipLeft) || (x >= clipRight) || |
| 257 | (y < clipTop) || (y >= clipBottom)) { |
| 258 | return; |
| 259 | } |
| 260 | |
| 261 | int X = x + offsetX; |
| 262 | int Y = y + offsetY; |
| 263 | |
| 264 | // stderr.writefln("putCharXY: %d, %d, %c", X, Y, ch); |
| 265 | |
| 266 | if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) { |
| 267 | dirty = true; |
| 268 | logical[X][Y].ch = ch; |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * Render a string. Does not wrap if the string exceeds the line. |
| 274 | * |
| 275 | * @param x column coordinate. 0 is the left-most column. |
| 276 | * @param y row coordinate. 0 is the top-most row. |
| 277 | * @param str string to draw |
| 278 | * @param attr attributes to use (bold, foreColor, backColor) |
| 279 | */ |
| 280 | public void putStrXY(int x, int y, String str, CellAttributes attr) { |
| 281 | int i = x; |
| 282 | for (int j = 0; j < str.length(); j++) { |
| 283 | char ch = str.charAt(j); |
| 284 | putCharXY(i, y, ch, attr); |
| 285 | i++; |
| 286 | if (i == width) { |
| 287 | break; |
| 288 | } |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | * Render a string without changing the underlying attribute. Does not |
| 294 | * wrap if the string exceeds the line. |
| 295 | * |
| 296 | * @param x column coordinate. 0 is the left-most column. |
| 297 | * @param y row coordinate. 0 is the top-most row. |
| 298 | * @param str string to draw |
| 299 | */ |
| 300 | public void putStrXY(int x, int y, String str) { |
| 301 | int i = x; |
| 302 | for (int j = 0; j < str.length(); j++) { |
| 303 | char ch = str.charAt(j); |
| 304 | putCharXY(i, y, ch); |
| 305 | i++; |
| 306 | if (i == width) { |
| 307 | break; |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * Draw a vertical line from (x, y) to (x, y + n) |
| 314 | * |
| 315 | * @param x column coordinate. 0 is the left-most column. |
| 316 | * @param y row coordinate. 0 is the top-most row. |
| 317 | * @param n number of characters to draw |
| 318 | * @param ch character to draw |
| 319 | * @param attr attributes to use (bold, foreColor, backColor) |
| 320 | */ |
| 321 | public void vLineXY(int x, int y, int n, char ch, CellAttributes attr) { |
| 322 | for (int i = y; i < y + n; i++) { |
| 323 | putCharXY(x, i, ch, attr); |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | /** |
| 328 | * Draw a horizontal line from (x, y) to (x + n, y) |
| 329 | * |
| 330 | * @param x column coordinate. 0 is the left-most column. |
| 331 | * @param y row coordinate. 0 is the top-most row. |
| 332 | * @param n number of characters to draw |
| 333 | * @param ch character to draw |
| 334 | * @param attr attributes to use (bold, foreColor, backColor) |
| 335 | */ |
| 336 | public void hLineXY(int x, int y, int n, char ch, CellAttributes attr) { |
| 337 | for (int i = x; i < x + n; i++) { |
| 338 | putCharXY(i, y, ch, attr); |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * Reallocate screen buffers. |
| 344 | * |
| 345 | * @param width new width |
| 346 | * @param height new height |
| 347 | */ |
| 348 | private void reallocate(int width, int height) { |
| 349 | if (logical != null) { |
| 350 | for (int row = 0; row < this.height; row++) { |
| 351 | for (int col = 0; col < this.width; col++) { |
| 352 | logical[col][row] = null; |
| 353 | } |
| 354 | } |
| 355 | logical = null; |
| 356 | } |
| 357 | logical = new Cell[width][height]; |
| 358 | if (physical != null) { |
| 359 | for (int row = 0; row < this.height; row++) { |
| 360 | for (int col = 0; col < this.width; col++) { |
| 361 | physical[col][row] = null; |
| 362 | } |
| 363 | } |
| 364 | physical = null; |
| 365 | } |
| 366 | physical = new Cell[width][height]; |
| 367 | |
| 368 | for (int row = 0; row < height; row++) { |
| 369 | for (int col = 0; col < width; col++) { |
| 370 | physical[col][row] = new Cell(); |
| 371 | logical[col][row] = new Cell(); |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | this.width = width; |
| 376 | this.height = height; |
| 377 | |
| 378 | clipLeft = 0; |
| 379 | clipTop = 0; |
| 380 | clipRight = width; |
| 381 | clipBottom = height; |
| 382 | |
| 383 | reallyCleared = true; |
| 384 | dirty = true; |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * Change the width. Everything on-screen will be destroyed and must be |
| 389 | * redrawn. |
| 390 | * |
| 391 | * @param width new screen width |
| 392 | */ |
| 393 | public void setWidth(int width) { |
| 394 | reallocate(width, this.height); |
| 395 | } |
| 396 | |
| 397 | /** |
| 398 | * Change the height. Everything on-screen will be destroyed and must be |
| 399 | * redrawn. |
| 400 | * |
| 401 | * @param height new screen height |
| 402 | */ |
| 403 | public void setHeight(int height) { |
| 404 | reallocate(this.width, height); |
| 405 | } |
| 406 | |
| 407 | /** |
| 408 | * Change the width and height. Everything on-screen will be destroyed |
| 409 | * and must be redrawn. |
| 410 | * |
| 411 | * @param width new screen width |
| 412 | * @param height new screen height |
| 413 | */ |
| 414 | public void setDimensions(int width, int height) { |
| 415 | reallocate(width, height); |
| 416 | } |
| 417 | |
| 418 | /** |
| 419 | * Get the height. |
| 420 | * |
| 421 | * @return current screen height |
| 422 | */ |
| 423 | public int getHeight() { |
| 424 | return this.height; |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * Get the width. |
| 429 | * |
| 430 | * @return current screen width |
| 431 | */ |
| 432 | public int getWidth() { |
| 433 | return this.width; |
| 434 | } |
| 435 | |
| 436 | /** |
| 437 | * Public constructor. Sets everything to not-bold, white-on-black. |
| 438 | */ |
| 439 | public Screen() { |
| 440 | debugToStderr = false; |
| 441 | |
| 442 | offsetX = 0; |
| 443 | offsetY = 0; |
| 444 | width = 80; |
| 445 | height = 24; |
| 446 | logical = null; |
| 447 | physical = null; |
| 448 | reallocate(width, height); |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * Reset screen to not-bold, white-on-black. Also flushes the offset and |
| 453 | * clip variables. |
| 454 | */ |
| 455 | public void reset() { |
| 456 | dirty = true; |
| 457 | for (int row = 0; row < height; row++) { |
| 458 | for (int col = 0; col < width; col++) { |
| 459 | logical[col][row].reset(); |
| 460 | } |
| 461 | } |
| 462 | resetClipping(); |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * Flush the offset and clip variables. |
| 467 | */ |
| 468 | public void resetClipping() { |
| 469 | offsetX = 0; |
| 470 | offsetY = 0; |
| 471 | clipLeft = 0; |
| 472 | clipTop = 0; |
| 473 | clipRight = width; |
| 474 | clipBottom = height; |
| 475 | } |
| 476 | |
| 477 | /** |
| 478 | * Force the screen to be fully cleared and redrawn on the next flush(). |
| 479 | */ |
| 480 | public void clear() { |
| 481 | reset(); |
| 482 | } |
| 483 | |
| 484 | /** |
| 485 | * Draw a box with a border and empty background. |
| 486 | * |
| 487 | * @param left left column of box. 0 is the left-most row. |
| 488 | * @param top top row of the box. 0 is the top-most row. |
| 489 | * @param right right column of box |
| 490 | * @param bottom bottom row of the box |
| 491 | * @param border attributes to use for the border (bold, foreColor, backColor) |
| 492 | * @param background attributes to use for the background |
| 493 | */ |
| 494 | public void drawBox(int left, int top, int right, int bottom, |
| 495 | CellAttributes border, CellAttributes background) { |
| 496 | drawBox(left, top, right, bottom, border, background, 1, false); |
| 497 | } |
| 498 | |
| 499 | /** |
| 500 | * Draw a box with a border and empty background. |
| 501 | * |
| 502 | * @param left left column of box. 0 is the left-most row. |
| 503 | * @param top top row of the box. 0 is the top-most row. |
| 504 | * @param right right column of box |
| 505 | * @param bottom bottom row of the box |
| 506 | * @param border attributes to use for the border (bold, foreColor, backColor) |
| 507 | * @param background attributes to use for the background |
| 508 | * @param borderType = 1: single-line border |
| 509 | * 2: double-line borders |
| 510 | * 3: double-line top/bottom edges and single-line left/right edges |
| 511 | * @param shadow if true, draw a "shadow" on the box |
| 512 | */ |
| 513 | public void drawBox(int left, int top, int right, int bottom, |
| 514 | CellAttributes border, CellAttributes background, int borderType, |
| 515 | boolean shadow) { |
| 516 | |
| 517 | int boxTop = top; |
| 518 | int boxLeft = left; |
| 519 | int boxWidth = right - left; |
| 520 | int boxHeight = bottom - top; |
| 521 | |
| 522 | char cTopLeft; |
| 523 | char cTopRight; |
| 524 | char cBottomLeft; |
| 525 | char cBottomRight; |
| 526 | char cHSide; |
| 527 | char cVSide; |
| 528 | |
| 529 | switch (borderType) { |
| 530 | case 1: |
| 531 | cTopLeft = GraphicsChars.ULCORNER; |
| 532 | cTopRight = GraphicsChars.URCORNER; |
| 533 | cBottomLeft = GraphicsChars.LLCORNER; |
| 534 | cBottomRight = GraphicsChars.LRCORNER; |
| 535 | cHSide = GraphicsChars.SINGLE_BAR; |
| 536 | cVSide = GraphicsChars.WINDOW_SIDE; |
| 537 | break; |
| 538 | |
| 539 | case 2: |
| 540 | cTopLeft = GraphicsChars.WINDOW_LEFT_TOP_DOUBLE; |
| 541 | cTopRight = GraphicsChars.WINDOW_RIGHT_TOP_DOUBLE; |
| 542 | cBottomLeft = GraphicsChars.WINDOW_LEFT_BOTTOM_DOUBLE; |
| 543 | cBottomRight = GraphicsChars.WINDOW_RIGHT_BOTTOM_DOUBLE; |
| 544 | cHSide = GraphicsChars.DOUBLE_BAR; |
| 545 | cVSide = GraphicsChars.WINDOW_SIDE_DOUBLE; |
| 546 | break; |
| 547 | |
| 548 | case 3: |
| 549 | cTopLeft = GraphicsChars.WINDOW_LEFT_TOP; |
| 550 | cTopRight = GraphicsChars.WINDOW_RIGHT_TOP; |
| 551 | cBottomLeft = GraphicsChars.WINDOW_LEFT_BOTTOM; |
| 552 | cBottomRight = GraphicsChars.WINDOW_RIGHT_BOTTOM; |
| 553 | cHSide = GraphicsChars.WINDOW_TOP; |
| 554 | cVSide = GraphicsChars.WINDOW_SIDE; |
| 555 | break; |
| 556 | default: |
| 557 | throw new IllegalArgumentException("Invalid border type: " + borderType); |
| 558 | } |
| 559 | |
| 560 | // Place the corner characters |
| 561 | putCharXY(left, top, cTopLeft, border); |
| 562 | putCharXY(left + boxWidth - 1, top, cTopRight, border); |
| 563 | putCharXY(left, top + boxHeight - 1, cBottomLeft, border); |
| 564 | putCharXY(left + boxWidth - 1, top + boxHeight - 1, cBottomRight, |
| 565 | border); |
| 566 | |
| 567 | // Draw the box lines |
| 568 | hLineXY(left + 1, top, boxWidth - 2, cHSide, border); |
| 569 | vLineXY(left, top + 1, boxHeight - 2, cVSide, border); |
| 570 | hLineXY(left + 1, top + boxHeight - 1, boxWidth - 2, cHSide, border); |
| 571 | vLineXY(left + boxWidth - 1, top + 1, boxHeight - 2, cVSide, border); |
| 572 | |
| 573 | // Fill in the interior background |
| 574 | for (int i = 1; i < boxHeight - 1; i++) { |
| 575 | hLineXY(1 + left, i + top, boxWidth - 2, ' ', background); |
| 576 | } |
| 577 | |
| 578 | if (shadow) { |
| 579 | // Draw a shadow |
| 580 | drawBoxShadow(left, top, right, bottom); |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | /** |
| 585 | * Draw a box shadow |
| 586 | * |
| 587 | * @param left left column of box. 0 is the left-most row. |
| 588 | * @param top top row of the box. 0 is the top-most row. |
| 589 | * @param right right column of box |
| 590 | * @param bottom bottom row of the box |
| 591 | */ |
| 592 | public void drawBoxShadow(int left, int top, int right, int bottom) { |
| 593 | |
| 594 | int boxTop = top; |
| 595 | int boxLeft = left; |
| 596 | int boxWidth = right - left; |
| 597 | int boxHeight = bottom - top; |
| 598 | CellAttributes shadowAttr = new CellAttributes(); |
| 599 | |
| 600 | // Shadows do not honor clipping but they DO honor offset. |
| 601 | int oldClipRight = clipRight; |
| 602 | int oldClipBottom = clipBottom; |
| 603 | /* |
| 604 | clipRight = boxWidth + 2; |
| 605 | clipBottom = boxHeight + 1; |
| 606 | */ |
| 607 | clipRight = width; |
| 608 | clipBottom = height; |
| 609 | |
| 610 | for (int i = 0; i < boxHeight; i++) { |
| 611 | putAttrXY(boxLeft + boxWidth, boxTop + 1 + i, shadowAttr); |
| 612 | putAttrXY(boxLeft + boxWidth + 1, boxTop + 1 + i, shadowAttr); |
| 613 | } |
| 614 | for (int i = 0; i < boxWidth; i++) { |
| 615 | putAttrXY(boxLeft + 2 + i, boxTop + boxHeight, shadowAttr); |
| 616 | } |
| 617 | clipRight = oldClipRight; |
| 618 | clipBottom = oldClipBottom; |
| 619 | } |
| 620 | |
| 621 | /** |
| 622 | * Subclasses must provide an implementation to push the logical screen |
| 623 | * to the physical device. |
| 624 | */ |
| 625 | abstract public void flushPhysical(); |
| 626 | |
| 627 | /** |
| 628 | * Put the cursor at (x,y). |
| 629 | * |
| 630 | * @param visible if true, the cursor should be visible |
| 631 | * @param x column coordinate to put the cursor on |
| 632 | * @param y row coordinate to put the cursor on |
| 633 | */ |
| 634 | public void putCursor(boolean visible, int x, int y) { |
| 635 | cursorVisible = visible; |
| 636 | cursorX = x; |
| 637 | cursorY = y; |
| 638 | } |
| 639 | |
| 640 | /** |
| 641 | * Hide the cursor |
| 642 | */ |
| 643 | public void hideCursor() { |
| 644 | cursorVisible = false; |
| 645 | } |
| 646 | } |