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1.1 ! root 1: /* ! 2: * $Source: /u1/X/xterm/RCS/util.c,v $ ! 3: * $Header: util.c,v 10.100 86/12/01 14:45:43 jg Rel $ ! 4: */ ! 5: ! 6: #include <X/mit-copyright.h> ! 7: ! 8: /* Copyright Massachusetts Institute of Technology 1984, 1985 */ ! 9: ! 10: /* util.c */ ! 11: ! 12: #ifndef lint ! 13: static char sccs_id[] = "@(#)util.c\tX10/6.6B\t12/26/86"; ! 14: #endif lint ! 15: ! 16: #include <stdio.h> ! 17: #include <X/Xlib.h> ! 18: #include <signal.h> ! 19: #include <setjmp.h> ! 20: typedef int *jmp_ptr; ! 21: ! 22: #include "scrollbar.h" ! 23: #include "ptyx.h" ! 24: #include "data.h" ! 25: #include "error.h" ! 26: ! 27: /* ! 28: * These routines are used for the jump scroll feature ! 29: */ ! 30: FlushScroll(screen) ! 31: register Screen *screen; ! 32: { ! 33: register int i; ! 34: register int shift = -screen->topline; ! 35: register int bot = screen->max_row - shift; ! 36: register int refreshtop; ! 37: register int refreshheight; ! 38: register int scrolltop; ! 39: register int scrollheight; ! 40: ! 41: if(screen->cursor_state) ! 42: HideCursor(); ! 43: if(screen->scroll_amt > 0) { ! 44: refreshheight = screen->refresh_amt; ! 45: scrollheight = screen->bot_marg - screen->top_marg - ! 46: refreshheight + 1; ! 47: if((refreshtop = screen->bot_marg - refreshheight + 1 + shift) > ! 48: (i = screen->max_row - screen->scroll_amt + 1)) ! 49: refreshtop = i; ! 50: if(screen->sb && GetSaveState(screen->sb) && ! 51: screen->top_marg == 0) { ! 52: scrolltop = 0; ! 53: if((scrollheight += shift) > i) ! 54: scrollheight = i; ! 55: if((i = screen->bot_marg - bot) > 0 && ! 56: (refreshheight -= i) < screen->scroll_amt) ! 57: refreshheight = screen->scroll_amt; ! 58: if((i = -GetScrollBarTop(screen->sb)) < ! 59: screen->savelines) { ! 60: if((i += screen->scroll_amt) > ! 61: screen->savelines) ! 62: i = screen->savelines; ! 63: SetScrollBarTop(screen->sb, -i); ! 64: DrawScrollRegion(screen->sb); ! 65: } ! 66: } else { ! 67: scrolltop = screen->top_marg + shift; ! 68: if((i = bot - (screen->bot_marg - screen->refresh_amt + ! 69: screen->scroll_amt)) > 0) { ! 70: if(bot < screen->bot_marg) ! 71: refreshheight = screen->scroll_amt + i; ! 72: } else { ! 73: scrollheight += i; ! 74: refreshheight = screen->scroll_amt; ! 75: if((i = screen->top_marg + screen->scroll_amt - ! 76: 1 - bot) > 0) { ! 77: refreshtop += i; ! 78: refreshheight -= i; ! 79: } ! 80: } ! 81: } ! 82: } else { ! 83: refreshheight = -screen->refresh_amt; ! 84: scrollheight = screen->bot_marg - screen->top_marg - ! 85: refreshheight + 1; ! 86: refreshtop = screen->top_marg + shift; ! 87: scrolltop = refreshtop + refreshheight; ! 88: if((i = screen->bot_marg - bot) > 0) ! 89: scrollheight -= i; ! 90: if((i = screen->top_marg + refreshheight - 1 - bot) > 0) ! 91: refreshheight -= i; ! 92: } ! 93: if(scrollheight > 0) { ! 94: if (screen->multiscroll && scrollheight == 1 && ! 95: screen->topline == 0 && screen->top_marg == 0 && ! 96: screen->bot_marg == screen->max_row) { ! 97: if (screen->incopy < 0 && screen->scrolls == 0) ! 98: CopyWait (screen); ! 99: screen->scrolls++; ! 100: } else { ! 101: if (screen->incopy) ! 102: CopyWait (screen); ! 103: screen->incopy = -1; ! 104: } ! 105: ! 106: XMoveArea (VWindow(screen), screen->border, (scrolltop + ! 107: screen->scroll_amt) * FontHeight(screen) + screen->border + ! 108: Titlebar(screen), screen->border, scrolltop * FontHeight(screen) ! 109: + screen->border + Titlebar(screen), Width(screen), ! 110: scrollheight * FontHeight(screen)); ! 111: } ! 112: screen->scroll_amt = 0; ! 113: screen->refresh_amt = 0; ! 114: if(refreshheight > 0) { ! 115: XTileSet (VWindow(screen), screen->border, refreshtop * ! 116: FontHeight(screen) + screen->border + Titlebar(screen), ! 117: Width(screen), refreshheight * FontHeight(screen), ! 118: screen->bgndtile); ! 119: ScrnRefresh(screen, refreshtop, 0, refreshheight, ! 120: screen->max_col + 1); ! 121: } ! 122: } ! 123: ! 124: AddToRefresh(screen) ! 125: register Screen *screen; ! 126: { ! 127: register int amount = screen->refresh_amt; ! 128: register int row = screen->cur_row; ! 129: ! 130: if(amount == 0 || screen->instatus) ! 131: return(0); ! 132: if(amount > 0) { ! 133: register int bottom; ! 134: ! 135: if(row == (bottom = screen->bot_marg) - amount) { ! 136: screen->refresh_amt++; ! 137: return(1); ! 138: } ! 139: return(row >= bottom - amount + 1 && row <= bottom); ! 140: } else { ! 141: register int top; ! 142: ! 143: amount = -amount; ! 144: if(row == (top = screen->top_marg) + amount) { ! 145: screen->refresh_amt--; ! 146: return(1); ! 147: } ! 148: return(row <= top + amount - 1 && row >= top); ! 149: } ! 150: } ! 151: ! 152: /* ! 153: * scrolls the screen by amount lines, erases bottom, doesn't alter ! 154: * cursor position (i.e. cursor moves down amount relative to text). ! 155: * All done within the scrolling region, of course. ! 156: * requires: amount > 0 ! 157: */ ! 158: Scroll (screen, amount) ! 159: register Screen *screen; ! 160: register int amount; ! 161: { ! 162: register int i = screen->bot_marg - screen->top_marg + 1; ! 163: register int shift; ! 164: register int bot; ! 165: register int refreshtop; ! 166: register int refreshheight; ! 167: register int scrolltop; ! 168: register int scrollheight; ! 169: ! 170: if(screen->cursor_state) ! 171: HideCursor(); ! 172: if (amount > i) ! 173: amount = i; ! 174: if(screen->jumpscroll) { ! 175: if(screen->scroll_amt > 0) { ! 176: if(screen->refresh_amt + amount > i) ! 177: FlushScroll(screen); ! 178: screen->scroll_amt += amount; ! 179: screen->refresh_amt += amount; ! 180: } else { ! 181: if(screen->scroll_amt < 0) ! 182: FlushScroll(screen); ! 183: screen->scroll_amt = amount; ! 184: screen->refresh_amt = amount; ! 185: } ! 186: refreshheight = 0; ! 187: } else { ! 188: ! 189: if (amount == i) { ! 190: ClearScreen(screen); ! 191: return; ! 192: } ! 193: shift = -screen->topline; ! 194: bot = screen->max_row - shift; ! 195: scrollheight = i - amount; ! 196: refreshheight = amount; ! 197: if((refreshtop = screen->bot_marg - refreshheight + 1 + shift) > ! 198: (i = screen->max_row - refreshheight + 1)) ! 199: refreshtop = i; ! 200: if(screen->sb && GetSaveState(screen->sb) && screen->top_marg == 0) { ! 201: scrolltop = 0; ! 202: if((scrollheight += shift) > i) ! 203: scrollheight = i; ! 204: if((i = -GetScrollBarTop(screen->sb)) < screen->savelines) { ! 205: if((i += amount) > screen->savelines) ! 206: i = screen->savelines; ! 207: SetScrollBarTop(screen->sb, -i); ! 208: DrawScrollRegion(screen->sb); ! 209: } ! 210: } else { ! 211: scrolltop = screen->top_marg + shift; ! 212: if((i = screen->bot_marg - bot) > 0) { ! 213: scrollheight -= i; ! 214: if((i = screen->top_marg + amount - 1 - bot) >= 0) { ! 215: refreshtop += i; ! 216: refreshheight -= i; ! 217: } ! 218: } ! 219: } ! 220: if(scrollheight > 0) { ! 221: if (screen->multiscroll ! 222: && amount==1 && screen->topline == 0 ! 223: && screen->top_marg==0 ! 224: && screen->bot_marg==screen->max_row) { ! 225: if (screen->incopy<0 && screen->scrolls==0) ! 226: CopyWait(screen); ! 227: screen->scrolls++; ! 228: } else { ! 229: if (screen->incopy) ! 230: CopyWait(screen); ! 231: screen->incopy = -1; ! 232: } ! 233: ! 234: XMoveArea(VWindow(screen), screen->border, (scrolltop+amount) * ! 235: FontHeight(screen) + screen->border + Titlebar(screen), ! 236: screen->border, scrolltop * FontHeight(screen) + screen->border ! 237: + Titlebar(screen), Width(screen), scrollheight * ! 238: FontHeight(screen)); ! 239: } ! 240: if(refreshheight > 0) { ! 241: XTileSet (VWindow(screen), screen->border, refreshtop * ! 242: FontHeight(screen) + screen->border + Titlebar(screen), ! 243: Width(screen), refreshheight * FontHeight(screen), ! 244: screen->bgndtile); ! 245: if(refreshheight > shift) ! 246: refreshheight = shift; ! 247: } ! 248: } ! 249: if(screen->sb && GetSaveState(screen->sb) && screen->top_marg == 0) ! 250: ScrnDeleteLine(screen->allbuf, screen->bot_marg + ! 251: screen->savelines, 0, amount, screen->max_col + 1); ! 252: else ! 253: ScrnDeleteLine(screen->buf, screen->bot_marg, screen->top_marg, ! 254: amount, screen->max_col + 1); ! 255: if(refreshheight > 0) ! 256: ScrnRefresh(screen, refreshtop, 0, refreshheight, ! 257: screen->max_col + 1); ! 258: } ! 259: ! 260: ! 261: /* ! 262: * Reverse scrolls the screen by amount lines, erases top, doesn't alter ! 263: * cursor position (i.e. cursor moves up amount relative to text). ! 264: * All done within the scrolling region, of course. ! 265: * Requires: amount > 0 ! 266: */ ! 267: RevScroll(screen, amount) ! 268: register Screen *screen; ! 269: register int amount; ! 270: { ! 271: register int i = screen->bot_marg - screen->top_marg + 1; ! 272: register int shift; ! 273: register int bot; ! 274: register int refreshtop; ! 275: register int refreshheight; ! 276: register int scrolltop; ! 277: register int scrollheight; ! 278: ! 279: if(screen->cursor_state) ! 280: HideCursor(); ! 281: if (amount > i) ! 282: amount = i; ! 283: if(screen->jumpscroll) { ! 284: if(screen->scroll_amt < 0) { ! 285: if(-screen->refresh_amt + amount > i) ! 286: FlushScroll(screen); ! 287: screen->scroll_amt -= amount; ! 288: screen->refresh_amt -= amount; ! 289: } else { ! 290: if(screen->scroll_amt > 0) ! 291: FlushScroll(screen); ! 292: screen->scroll_amt = -amount; ! 293: screen->refresh_amt = -amount; ! 294: } ! 295: } else { ! 296: shift = -screen->topline; ! 297: bot = screen->max_row - shift; ! 298: refreshheight = amount; ! 299: scrollheight = screen->bot_marg - screen->top_marg - ! 300: refreshheight + 1; ! 301: refreshtop = screen->top_marg + shift; ! 302: scrolltop = refreshtop + refreshheight; ! 303: if((i = screen->bot_marg - bot) > 0) ! 304: scrollheight -= i; ! 305: if((i = screen->top_marg + refreshheight - 1 - bot) > 0) ! 306: refreshheight -= i; ! 307: if(scrollheight > 0) { ! 308: if (screen->multiscroll ! 309: && amount==1 && screen->topline == 0 ! 310: && screen->top_marg==0 ! 311: && screen->bot_marg==screen->max_row) { ! 312: if (screen->incopy<0 && screen->scrolls==0) ! 313: CopyWait(screen); ! 314: screen->scrolls++; ! 315: } else { ! 316: if (screen->incopy) ! 317: CopyWait(screen); ! 318: screen->incopy = -1; ! 319: } ! 320: ! 321: XMoveArea (VWindow(screen), screen->border, (scrolltop-amount) * ! 322: FontHeight(screen) + screen->border + Titlebar(screen), ! 323: screen->border, scrolltop * FontHeight(screen) + screen->border ! 324: + Titlebar(screen), Width(screen), scrollheight * ! 325: FontHeight(screen)); ! 326: } ! 327: if(refreshheight > 0) ! 328: XTileSet (VWindow(screen), screen->border, refreshtop * ! 329: FontHeight(screen) + screen->border + Titlebar(screen), ! 330: Width(screen), refreshheight * FontHeight(screen), ! 331: screen->bgndtile); ! 332: } ! 333: ScrnInsertLine (screen->buf, screen->bot_marg, screen->top_marg, ! 334: amount, screen->max_col + 1); ! 335: } ! 336: ! 337: /* ! 338: * If cursor not in scrolling region, returns. Else, ! 339: * inserts n blank lines at the cursor's position. Lines above the ! 340: * bottom margin are lost. ! 341: */ ! 342: InsertLine (screen, n) ! 343: register Screen *screen; ! 344: register int n; ! 345: { ! 346: register int i; ! 347: register int shift; ! 348: register int bot; ! 349: register int refreshtop; ! 350: register int refreshheight; ! 351: register int scrolltop; ! 352: register int scrollheight; ! 353: ! 354: if (screen->cur_row < screen->top_marg || ! 355: screen->cur_row > screen->bot_marg) ! 356: return; ! 357: if(screen->cursor_state) ! 358: HideCursor(); ! 359: screen->do_wrap = 0; ! 360: if (n > (i = screen->bot_marg - screen->cur_row + 1)) ! 361: n = i; ! 362: if(screen->jumpscroll) { ! 363: if(screen->scroll_amt <= 0 && ! 364: screen->cur_row <= -screen->refresh_amt) { ! 365: if(-screen->refresh_amt + n > screen->max_row + 1) ! 366: FlushScroll(screen); ! 367: screen->scroll_amt -= n; ! 368: screen->refresh_amt -= n; ! 369: } else if(screen->scroll_amt) ! 370: FlushScroll(screen); ! 371: } ! 372: if(!screen->scroll_amt) { ! 373: shift = -screen->topline; ! 374: bot = screen->max_row - shift; ! 375: refreshheight = n; ! 376: scrollheight = screen->bot_marg - screen->cur_row - refreshheight + 1; ! 377: refreshtop = screen->cur_row + shift; ! 378: scrolltop = refreshtop + refreshheight; ! 379: if((i = screen->bot_marg - bot) > 0) ! 380: scrollheight -= i; ! 381: if((i = screen->cur_row + refreshheight - 1 - bot) > 0) ! 382: refreshheight -= i; ! 383: if(scrollheight > 0) { ! 384: if (screen->incopy) ! 385: CopyWait (screen); ! 386: screen->incopy = -1; ! 387: XMoveArea (VWindow(screen), screen->border, (scrolltop - n) * ! 388: FontHeight(screen) + screen->border + Titlebar(screen), ! 389: screen->border, scrolltop * FontHeight(screen) + screen->border ! 390: + Titlebar(screen), Width(screen), scrollheight * ! 391: FontHeight(screen)); ! 392: } ! 393: if(refreshheight > 0) ! 394: XTileSet (VWindow(screen), ! 395: screen->border, refreshtop * FontHeight(screen) + screen->border ! 396: + Titlebar(screen), Width(screen), refreshheight * ! 397: FontHeight(screen), screen->bgndtile); ! 398: } ! 399: /* adjust screen->buf */ ! 400: ScrnInsertLine(screen->buf, screen->bot_marg, screen->cur_row, n, ! 401: screen->max_col + 1); ! 402: } ! 403: ! 404: /* ! 405: * If cursor not in scrolling region, returns. Else, deletes n lines ! 406: * at the cursor's position, lines added at bottom margin are blank. ! 407: */ ! 408: DeleteLine(screen, n) ! 409: register Screen *screen; ! 410: register int n; ! 411: { ! 412: register int i; ! 413: register int shift; ! 414: register int bot; ! 415: register int refreshtop; ! 416: register int refreshheight; ! 417: register int scrolltop; ! 418: register int scrollheight; ! 419: ! 420: if (screen->cur_row < screen->top_marg || ! 421: screen->cur_row > screen->bot_marg) ! 422: return; ! 423: if(screen->cursor_state) ! 424: HideCursor(); ! 425: screen->do_wrap = 0; ! 426: if (n > (i = screen->bot_marg - screen->cur_row + 1)) ! 427: n = i; ! 428: if(screen->jumpscroll) { ! 429: if(screen->scroll_amt >= 0 && screen->cur_row == screen->top_marg) { ! 430: if(screen->refresh_amt + n > screen->max_row + 1) ! 431: FlushScroll(screen); ! 432: screen->scroll_amt += n; ! 433: screen->refresh_amt += n; ! 434: } else if(screen->scroll_amt) ! 435: FlushScroll(screen); ! 436: } ! 437: if(!screen->scroll_amt) { ! 438: ! 439: shift = -screen->topline; ! 440: bot = screen->max_row - shift; ! 441: scrollheight = i - n; ! 442: refreshheight = n; ! 443: if((refreshtop = screen->bot_marg - refreshheight + 1 + shift) > ! 444: (i = screen->max_row - refreshheight + 1)) ! 445: refreshtop = i; ! 446: if(screen->sb && GetSaveState(screen->sb) && screen->cur_row == 0) { ! 447: scrolltop = 0; ! 448: if((scrollheight += shift) > i) ! 449: scrollheight = i; ! 450: if((i = -GetScrollBarTop(screen->sb)) < screen->savelines) { ! 451: if((i += n) > screen->savelines) ! 452: i = screen->savelines; ! 453: SetScrollBarTop(screen->sb, -i); ! 454: DrawScrollRegion(screen->sb); ! 455: } ! 456: } else { ! 457: scrolltop = screen->cur_row + shift; ! 458: if((i = screen->bot_marg - bot) > 0) { ! 459: scrollheight -= i; ! 460: if((i = screen->cur_row + n - 1 - bot) >= 0) { ! 461: refreshheight -= i; ! 462: } ! 463: } ! 464: } ! 465: if(scrollheight > 0) { ! 466: if (screen->incopy) ! 467: CopyWait(screen); ! 468: screen->incopy = -1; ! 469: ! 470: XMoveArea (VWindow(screen), screen->border, (scrolltop + n) * ! 471: FontHeight(screen) + screen->border + Titlebar(screen), ! 472: screen->border, scrolltop * FontHeight(screen) + screen->border ! 473: + Titlebar(screen), Width(screen), scrollheight * ! 474: FontHeight(screen)); ! 475: } ! 476: if(refreshheight > 0) ! 477: XTileSet (VWindow(screen), screen->border, refreshtop * ! 478: FontHeight(screen) + screen->border + Titlebar(screen), ! 479: Width(screen), refreshheight * FontHeight(screen), ! 480: screen->bgndtile); ! 481: } ! 482: /* adjust screen->buf */ ! 483: if(screen->sb && GetSaveState(screen->sb) && screen->cur_row == 0) ! 484: ScrnDeleteLine(screen->allbuf, screen->bot_marg + ! 485: screen->savelines, 0, n, screen->max_col + 1); ! 486: else ! 487: ScrnDeleteLine(screen->buf, screen->bot_marg, screen->cur_row, ! 488: n, screen->max_col + 1); ! 489: } ! 490: ! 491: /* ! 492: * Insert n blanks at the cursor's position, no wraparound ! 493: */ ! 494: InsertChar (screen, n) ! 495: register Screen *screen; ! 496: register int n; ! 497: { ! 498: register int width = n * FontWidth(screen), cx, cy; ! 499: ! 500: if(screen->cursor_state) ! 501: HideCursor(); ! 502: screen->do_wrap = 0; ! 503: if(screen->cur_row - screen->topline <= screen->max_row || ! 504: screen->instatus) { ! 505: if(!AddToRefresh(screen)) { ! 506: if(screen->scroll_amt) ! 507: FlushScroll(screen); ! 508: ! 509: if (screen->incopy) ! 510: CopyWait (screen); ! 511: screen->incopy = -1; ! 512: ! 513: cx = CursorX (screen, screen->cur_col); ! 514: cy = CursorY (screen, screen->cur_row); ! 515: XMoveArea(VWindow(screen), cx, cy, cx + width, cy, ! 516: Width(screen) - (screen->cur_col + n) * FontWidth(screen), ! 517: FontHeight(screen)); ! 518: XPixSet(VWindow(screen), cx, cy, ! 519: width, FontHeight(screen), screen->instatus ? ! 520: screen->foreground : screen->background); ! 521: ! 522: } ! 523: } ! 524: /* adjust screen->buf */ ! 525: ScrnInsertChar(screen->buf, screen->cur_row, screen->cur_col, n, ! 526: screen->max_col + 1); ! 527: } ! 528: ! 529: /* ! 530: * Deletes n chars at the cursor's position, no wraparound. ! 531: */ ! 532: DeleteChar (screen, n) ! 533: register Screen *screen; ! 534: register int n; ! 535: { ! 536: register int width, cx, cy; ! 537: ! 538: if(screen->cursor_state) ! 539: HideCursor(); ! 540: screen->do_wrap = 0; ! 541: if (n > (width = screen->max_col + 1 - screen->cur_col)) ! 542: n = width; ! 543: ! 544: if(screen->cur_row - screen->topline <= screen->max_row || ! 545: screen->instatus) { ! 546: if(!AddToRefresh(screen)) { ! 547: if(screen->scroll_amt) ! 548: FlushScroll(screen); ! 549: ! 550: width = n * FontWidth(screen); ! 551: ! 552: if (screen->incopy) ! 553: CopyWait (screen); ! 554: screen->incopy = -1; ! 555: ! 556: cx = CursorX (screen, screen->cur_col); ! 557: cy = CursorY (screen, screen->cur_row); ! 558: XMoveArea(VWindow(screen), cx + width, cy, cx, cy, ! 559: Width(screen) - (screen->cur_col + n) * FontWidth(screen), ! 560: FontHeight(screen)); ! 561: XPixSet (VWindow(screen), ! 562: screen->border + Width(screen) - width, cy, ! 563: width, FontHeight(screen), screen->instatus ? ! 564: screen->foreground : screen->background); ! 565: ! 566: } ! 567: } ! 568: /* adjust screen->buf */ ! 569: ScrnDeleteChar (screen->buf, screen->cur_row, screen->cur_col, n, ! 570: screen->max_col + 1); ! 571: ! 572: } ! 573: ! 574: /* ! 575: * Clear from cursor position to beginning of display, inclusive. ! 576: */ ! 577: ClearAbove (screen) ! 578: register Screen *screen; ! 579: { ! 580: register top, height; ! 581: ! 582: if(screen->cursor_state) ! 583: HideCursor(); ! 584: if((top = -screen->topline) <= screen->max_row) { ! 585: if(screen->scroll_amt) ! 586: FlushScroll(screen); ! 587: if((height = screen->cur_row + top) > screen->max_row) ! 588: height = screen->max_row; ! 589: if((height -= top) > 0) ! 590: XTileSet(VWindow(screen), screen->border, top * ! 591: FontHeight(screen) + screen->border + Titlebar(screen), ! 592: Width(screen), height * FontHeight(screen), ! 593: screen->bgndtile); ! 594: ! 595: if(screen->cur_row - screen->topline <= screen->max_row) ! 596: ClearLeft(screen); ! 597: } ! 598: ClearBufRows(screen, 0, screen->cur_row - 1); ! 599: } ! 600: ! 601: /* ! 602: * Clear from cursor position to end of display, inclusive. ! 603: */ ! 604: ClearBelow (screen) ! 605: register Screen *screen; ! 606: { ! 607: register top; ! 608: ! 609: ClearRight(screen); ! 610: if((top = screen->cur_row - screen->topline) <= screen->max_row) { ! 611: if(screen->scroll_amt) ! 612: FlushScroll(screen); ! 613: if(++top <= screen->max_row) ! 614: XTileSet(VWindow(screen), screen->border, top * ! 615: FontHeight(screen) + screen->border + Titlebar(screen), ! 616: Width(screen), (screen->max_row - top + 1) * ! 617: FontHeight(screen), screen->bgndtile); ! 618: } ! 619: ClearBufRows(screen, screen->cur_row + 1, screen->max_row); ! 620: } ! 621: ! 622: /* ! 623: * Clear last part of cursor's line, inclusive. ! 624: */ ! 625: ClearRight (screen) ! 626: register Screen *screen; ! 627: { ! 628: if(screen->cursor_state) ! 629: HideCursor(); ! 630: screen->do_wrap = 0; ! 631: if(screen->cur_row - screen->topline <= screen->max_row || ! 632: screen->instatus) { ! 633: if(!AddToRefresh(screen)) { ! 634: if(screen->scroll_amt) ! 635: FlushScroll(screen); ! 636: XPixSet(VWindow(screen), ! 637: CursorX(screen, screen->cur_col), ! 638: CursorY(screen, screen->cur_row), ! 639: Width(screen) - screen->cur_col * FontWidth(screen), ! 640: FontHeight(screen), screen->instatus ? screen->foreground : ! 641: screen->background); ! 642: } ! 643: } ! 644: bzero(screen->buf [2 * screen->cur_row] + screen->cur_col, ! 645: (screen->max_col - screen->cur_col + 1)); ! 646: bzero(screen->buf [2 * screen->cur_row + 1] + screen->cur_col, ! 647: (screen->max_col - screen->cur_col + 1)); ! 648: } ! 649: ! 650: /* ! 651: * Clear first part of cursor's line, inclusive. ! 652: */ ! 653: ClearLeft (screen) ! 654: register Screen *screen; ! 655: { ! 656: if(screen->cursor_state) ! 657: HideCursor(); ! 658: screen->do_wrap = 0; ! 659: if(screen->cur_row - screen->topline <= screen->max_row || ! 660: screen->instatus) { ! 661: if(!AddToRefresh(screen)) { ! 662: if(screen->scroll_amt) ! 663: FlushScroll(screen); ! 664: ! 665: XPixSet (VWindow(screen), ! 666: screen->border, CursorY (screen, screen->cur_row), ! 667: (screen->cur_col + 1) * FontWidth(screen), ! 668: FontHeight(screen), screen->instatus ? screen->foreground : ! 669: screen->background); ! 670: } ! 671: } ! 672: bzero (screen->buf [2 * screen->cur_row], (screen->cur_col + 1)); ! 673: bzero (screen->buf [2 * screen->cur_row + 1], (screen->cur_col + 1)); ! 674: } ! 675: ! 676: /* ! 677: * Erase the cursor's line. ! 678: */ ! 679: ClearLine(screen) ! 680: register Screen *screen; ! 681: { ! 682: if(screen->cursor_state) ! 683: HideCursor(); ! 684: screen->do_wrap = 0; ! 685: if(screen->cur_row - screen->topline <= screen->max_row || ! 686: screen->instatus) { ! 687: if(!AddToRefresh(screen)) { ! 688: if(screen->scroll_amt) ! 689: FlushScroll(screen); ! 690: XPixSet (VWindow(screen), ! 691: screen->border, CursorY (screen, screen->cur_row), ! 692: Width(screen), FontHeight(screen), screen->instatus ? ! 693: screen->foreground : screen->background); ! 694: } ! 695: } ! 696: bzero (screen->buf [2 * screen->cur_row], (screen->max_col + 1)); ! 697: bzero (screen->buf [2 * screen->cur_row + 1], (screen->max_col + 1)); ! 698: } ! 699: ! 700: ClearScreen(screen) ! 701: register Screen *screen; ! 702: { ! 703: register int top; ! 704: ! 705: if(screen->cursor_state) ! 706: HideCursor(); ! 707: screen->do_wrap = 0; ! 708: if((top = -screen->topline) <= screen->max_row) { ! 709: if(screen->scroll_amt) ! 710: FlushScroll(screen); ! 711: if(top == 0 && !screen->statusline) ! 712: XClear(VWindow(screen)); ! 713: else ! 714: XTileSet(VWindow(screen), screen->border, top * ! 715: FontHeight(screen) + screen->border + Titlebar(screen), ! 716: Width(screen), (screen->max_row - top + 1) * ! 717: FontHeight(screen), screen->bgndtile); ! 718: } ! 719: ClearBufRows (screen, 0, screen->max_row); ! 720: screen->pagecnt = 0; ! 721: } ! 722: ! 723: CopyWait(screen) ! 724: register Screen *screen; ! 725: { ! 726: XEvent reply; ! 727: XEvent *rep = &reply; ! 728: ! 729: while (1) { ! 730: XWindowEvent (VWindow(screen), ExposeRegion|ExposeCopy, &reply); ! 731: switch (reply.type) { ! 732: case ExposeRegion: ! 733: if (((XExposeEvent *)rep)->detail == ExposeCopy && ! 734: screen->incopy <= 0) { ! 735: screen->incopy = 1; ! 736: if (screen->scrolls > 0) ! 737: screen->scrolls--; ! 738: } ! 739: HandleExposure (screen, &reply); ! 740: break; ! 741: case ExposeCopy: ! 742: if (screen->incopy <= 0 && screen->scrolls > 0) ! 743: screen->scrolls--; ! 744: if (screen->scrolls == 0) { ! 745: screen->incopy = 0; ! 746: return; ! 747: } ! 748: screen->incopy = -1; ! 749: break; ! 750: } ! 751: } ! 752: } ! 753: /* ! 754: * This routine handles exposure events ! 755: */ ! 756: HandleExposure (screen, reply) ! 757: register Screen *screen; ! 758: register XExposeEvent *reply; ! 759: { ! 760: register int toprow, leftcol, nrows, ncols; ! 761: extern Terminal term; /* kludge */ ! 762: XExposeRegionEvent event; ! 763: ! 764: if((toprow = (reply->y - screen->border - Titlebar(screen)) / ! 765: FontHeight(screen)) < 0) ! 766: toprow = 0; ! 767: if((leftcol = (reply->x - screen->border) / FontWidth(screen)) < 0) ! 768: leftcol = 0; ! 769: nrows = (reply->y + reply->height - 1 - screen->border ! 770: - Titlebar(screen)) / FontHeight(screen) - toprow + 1; ! 771: ncols = (reply->x + reply->width - 1 - screen->border) / ! 772: FontWidth(screen) - leftcol + 1; ! 773: toprow -= screen->scrolls; ! 774: if (toprow < 0) { ! 775: nrows += toprow; ! 776: toprow = 0; ! 777: } ! 778: if (toprow + nrows - 1 > screen->max_row) ! 779: nrows = screen->max_row - toprow + 1 + screen->statusline; ! 780: if (leftcol + ncols - 1 > screen->max_col) ! 781: ncols = screen->max_col - leftcol + 1; ! 782: ! 783: if (nrows > 0 && ncols > 0) { ! 784: ScrnRefresh (screen, toprow, leftcol, nrows, ncols); ! 785: if (screen->cur_row >= toprow && ! 786: screen->cur_row < toprow + nrows && ! 787: screen->cur_col >= leftcol && ! 788: screen->cur_col < leftcol + ncols) ! 789: return (1); ! 790: } ! 791: return (0); ! 792: } ! 793: ! 794: ReverseVideo (term) ! 795: Terminal *term; ! 796: { ! 797: register Screen *screen = &term->screen; ! 798: register Pixmap pix; ! 799: register int tmp; ! 800: register Window tek = TWindow(screen); ! 801: extern Pixmap B_Pixmap; ! 802: extern Pixmap W_Pixmap; ! 803: ! 804: if(screen->color & C_BACKGROUND) ! 805: XFreePixmap(screen->bgndtile); ! 806: tmp = screen->background; ! 807: if(screen->cursorcolor == screen->foreground) ! 808: screen->cursorcolor = tmp; ! 809: if(screen->mousecolor == screen->foreground) ! 810: screen->mousecolor = tmp; ! 811: screen->background = screen->foreground; ! 812: screen->foreground = tmp; ! 813: ! 814: screen->color = (screen->color & ~C_FBMASK) | switchfb[screen->color ! 815: & C_FBMASK]; ! 816: ! 817: if(screen->color & C_BACKGROUND) { ! 818: if(!(screen->bgndtile = XMakeTile(screen->background))) ! 819: Error(ERROR_UBACK); ! 820: } else ! 821: screen->bgndtile = (screen->background == W_Pixel) ? W_Pixmap ! 822: : B_Pixmap; ! 823: ! 824: /* X11 arrow cursor feature */ ! 825: XFreeCursor(screen->curs); ! 826: if (curs_shape && strcmp(curs_shape, "arrow") == 0) ! 827: screen->curs = make_arrow(screen->mousecolor, ! 828: screen->background, GXcopy); ! 829: else ! 830: screen->curs = make_xterm(screen->mousecolor, ! 831: screen->background, GXcopy); ! 832: XFreeCursor(screen->arrow); ! 833: screen->arrow = make_arrow(screen->mousecolor, screen->background, ! 834: GXcopy); ! 835: ! 836: XDefineCursor(VWindow(screen), screen->curs); ! 837: if(screen->sb) ! 838: XDefineCursor(screen->sb->bar, screen->sb->cursor = ! 839: screen->arrow); ! 840: if(screen->title.tbar) ! 841: XDefineCursor(screen->title.tbar, screen->arrow); ! 842: if(tek) ! 843: XDefineCursor(tek, screen->arrow); ! 844: #ifdef MODEMENU ! 845: MenuNewCursor(screen->arrow); ! 846: #endif MODEMENU ! 847: ! 848: if (screen->background < 2 && screen->foreground < 2) { ! 849: if (screen->bgndtile == B_Pixmap) ! 850: screen->bordertile = W_Pixmap; ! 851: else if (screen->bgndtile == W_Pixmap) ! 852: screen->bordertile = B_Pixmap; ! 853: pix = screen->bordertile; ! 854: if(screen->sb) ! 855: XChangeBorder (screen->sb->bar, pix); ! 856: if(screen->title.tbar) ! 857: XChangeBorder (screen->title.tbar, pix); ! 858: if(tek && screen->Ttitle.tbar) ! 859: XChangeBorder (screen->Ttitle.tbar, pix); ! 860: if(screen->borderwidth > 0) { ! 861: XChangeBorder (VWindow(screen), pix); ! 862: XChangeBorder (screen->iconVwin.window, pix); ! 863: if(tek) { ! 864: XChangeBorder (tek, pix); ! 865: XChangeBorder (screen->iconTwin.window, pix); ! 866: } ! 867: } ! 868: } ! 869: ! 870: XChangeBackground (VWindow(screen), screen->bgndtile); ! 871: XChangeBackground (screen->iconVwin.window, screen->bgndtile); ! 872: if(screen->title.tbar) ! 873: XChangeBackground (screen->title.tbar, screen->bgndtile); ! 874: if(tek) { ! 875: XChangeBackground (screen->iconTwin.window, screen->bgndtile); ! 876: if(screen->Ttitle.tbar) ! 877: XChangeBackground (screen->Ttitle.tbar, screen->bgndtile); ! 878: TekReverseVideo(screen); ! 879: } ! 880: XClear (VWindow(screen)); ! 881: XClear (screen->iconVwin.window); ! 882: ScrnRefresh (screen, 0, 0, screen->max_row + 1 + screen->statusline, ! 883: screen->max_col + 1); ! 884: if(screen->Tshow) { ! 885: XClear (tek); ! 886: XClear (screen->iconTwin.window); ! 887: TekExpose((XExposeWindowEvent *)0); ! 888: } ! 889: if(Titlebar(screen)) { ! 890: XClear(screen->title.tbar); ! 891: VTTitleExpose(NULL); ! 892: if(screen->Tshow) { ! 893: XClear(screen->Ttitle.tbar); ! 894: TekTitleExpose(NULL); ! 895: } ! 896: } ! 897: }
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