/* $XTermId: util.c,v 1.489 2009/09/10 09:22:43 tom Exp $ */ /* * Copyright 1999-2008,2009 by Thomas E. Dickey * * All Rights Reserved * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name(s) of the above copyright * holders shall not be used in advertising or otherwise to promote the * sale, use or other dealings in this Software without prior written * authorization. * * * Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. * * All Rights Reserved * * Permission to use, copy, modify, and distribute this software and its * documentation for any purpose and without fee is hereby granted, * provided that the above copyright notice appear in all copies and that * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of Digital Equipment * Corporation not be used in advertising or publicity pertaining to * distribution of the software without specific, written prior permission. * * * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. */ /* util.c */ #include #include #include #include #include #include #include #include #include #if OPT_WIDE_CHARS #if defined(HAVE_WCHAR_H) && defined(HAVE_WCWIDTH) #include #endif #include #endif static int handle_translated_exposure(XtermWidget xw, int rect_x, int rect_y, int rect_width, int rect_height); static void ClearLeft(XtermWidget xw); static void CopyWait(XtermWidget xw); static void horizontal_copy_area(XtermWidget xw, int firstchar, int nchars, int amount); static void vertical_copy_area(XtermWidget xw, int firstline, int nlines, int amount); #if OPT_WIDE_CHARS int (*my_wcwidth) (wchar_t); #endif #if OPT_WIDE_CHARS /* * We will modify the 'n' cells beginning at the current position. * Some of those cells may be part of multi-column characters, including * carryover from the left. Find the limits of the multi-column characters * that we should fill with blanks, return true if filling is needed. */ int DamagedCells(TScreen * screen, unsigned n, int *klp, int *krp, int row, int col) { LineData *ld = getLineData(screen, row); int kl = col; int kr = col + (int) n; if (ld->charData[kl] == HIDDEN_CHAR) { while (kl > 0) { if (ld->charData[--kl] != HIDDEN_CHAR) { break; } } } else { kl = col + 1; } if (ld->charData[kr] == HIDDEN_CHAR) { while (kr < screen->max_col) { if (ld->charData[++kr] != HIDDEN_CHAR) { --kr; break; } } } else { kr = col - 1; } if (klp) *klp = kl; if (krp) *krp = kr; return (kr >= kl); } int DamagedCurCells(TScreen * screen, unsigned n, int *klp, int *krp) { return DamagedCells(screen, n, klp, krp, screen->cur_row, screen->cur_col); } #endif /* OPT_WIDE_CHARS */ /* * These routines are used for the jump scroll feature */ void FlushScroll(XtermWidget xw) { TScreen *screen = &(xw->screen); int i; int shift = INX2ROW(screen, 0); int bot = screen->max_row - shift; int refreshtop; int refreshheight; int scrolltop; int scrollheight; if (screen->cursor_state) HideCursor(); if (screen->scroll_amt > 0) { refreshheight = screen->refresh_amt; scrollheight = screen->bot_marg - screen->top_marg - refreshheight + 1; if ((refreshtop = screen->bot_marg - refreshheight + 1 + shift) > (i = screen->max_row - screen->scroll_amt + 1)) refreshtop = i; if (screen->scrollWidget && !screen->whichBuf && screen->top_marg == 0) { scrolltop = 0; if ((scrollheight += shift) > i) scrollheight = i; if ((i = screen->bot_marg - bot) > 0 && (refreshheight -= i) < screen->scroll_amt) refreshheight = screen->scroll_amt; if ((i = screen->savedlines) < screen->savelines) { if ((i += screen->scroll_amt) > screen->savelines) i = screen->savelines; screen->savedlines = i; ScrollBarDrawThumb(screen->scrollWidget); } } else { scrolltop = screen->top_marg + shift; if ((i = bot - (screen->bot_marg - screen->refresh_amt + screen->scroll_amt)) > 0) { if (bot < screen->bot_marg) refreshheight = screen->scroll_amt + i; } else { scrollheight += i; refreshheight = screen->scroll_amt; if ((i = screen->top_marg + screen->scroll_amt - 1 - bot) > 0) { refreshtop += i; refreshheight -= i; } } } } else { refreshheight = -screen->refresh_amt; scrollheight = screen->bot_marg - screen->top_marg - refreshheight + 1; refreshtop = screen->top_marg + shift; scrolltop = refreshtop + refreshheight; if ((i = screen->bot_marg - bot) > 0) scrollheight -= i; if ((i = screen->top_marg + refreshheight - 1 - bot) > 0) refreshheight -= i; } scrolling_copy_area(xw, scrolltop + screen->scroll_amt, scrollheight, screen->scroll_amt); ScrollSelection(screen, -(screen->scroll_amt), False); screen->scroll_amt = 0; screen->refresh_amt = 0; if (refreshheight > 0) { ClearCurBackground(xw, (int) refreshtop * FontHeight(screen) + screen->border, (int) OriginX(screen), (unsigned) (refreshheight * FontHeight(screen)), (unsigned) Width(screen)); ScrnRefresh(xw, refreshtop, 0, refreshheight, MaxCols(screen), False); } return; } /* * Returns true if there are lines off-screen due to scrolling which should * include the current line. If false, the line is visible and we should * paint it now rather than waiting for the line to become visible. */ int AddToRefresh(XtermWidget xw) { TScreen *screen = &(xw->screen); int amount = screen->refresh_amt; int row = screen->cur_row; int result; if (amount == 0) { result = 0; } else if (amount > 0) { int bottom; if (row == (bottom = screen->bot_marg) - amount) { screen->refresh_amt++; result = 1; } else { result = (row >= bottom - amount + 1 && row <= bottom); } } else { int top; amount = -amount; if (row == (top = screen->top_marg) + amount) { screen->refresh_amt--; result = 1; } else { result = (row <= top + amount - 1 && row >= top); } } /* * If this line is visible, and there are scrolled-off lines, flush out * those which are now visible. */ if (!result && screen->scroll_amt) FlushScroll(xw); return result; } /* * Returns true if the current row is in the visible area (it should be for * screen operations) and incidentally flush the scrolled-in lines which * have newly become visible. */ static Bool AddToVisible(XtermWidget xw) { TScreen *screen = &(xw->screen); Bool result = False; if (INX2ROW(screen, screen->cur_row) <= screen->max_row) { if (!AddToRefresh(xw)) { result = True; } } return result; } /* * If we're scrolling, leave the selection intact if possible. * If it will bump into one of the extremes of the saved-lines, truncate that. * If the selection is not contained within the scrolled region, clear it. */ static void adjustHiliteOnFwdScroll(XtermWidget xw, int amount, Bool all_lines) { TScreen *screen = &(xw->screen); int lo_row = (all_lines ? (screen->bot_marg - screen->savelines) : screen->top_marg); int hi_row = screen->bot_marg; TRACE2(("adjustSelection FWD %s by %d (%s)\n", screen->whichBuf ? "alternate" : "normal", amount, all_lines ? "all" : "visible")); TRACE2((" before highlite %d.%d .. %d.%d\n", screen->startH.row, screen->startH.col, screen->endH.row, screen->endH.col)); TRACE2((" margins %d..%d\n", screen->top_marg, screen->bot_marg)); TRACE2((" limits %d..%d\n", lo_row, hi_row)); if (screen->startH.row >= lo_row && screen->startH.row - amount < lo_row) { /* truncate the selection because its start would move out of region */ if (lo_row + amount <= screen->endH.row) { TRACE2(("truncate selection by changing start %d.%d to %d.%d\n", screen->startH.row, screen->startH.col, lo_row + amount, 0)); screen->startH.row = lo_row + amount; screen->startH.col = 0; } else { TRACE2(("deselect because %d.%d .. %d.%d shifted %d is outside margins %d..%d\n", screen->startH.row, screen->startH.col, screen->endH.row, screen->endH.col, -amount, lo_row, hi_row)); ScrnDisownSelection(xw); } } else if (screen->startH.row <= hi_row && screen->endH.row > hi_row) { ScrnDisownSelection(xw); } else if (screen->startH.row < lo_row && screen->endH.row > lo_row) { ScrnDisownSelection(xw); } TRACE2((" after highlite %d.%d .. %d.%d\n", screen->startH.row, screen->startH.col, screen->endH.row, screen->endH.col)); } /* * This is the same as adjustHiliteOnFwdScroll(), but reversed. In this case, * only the visible lines are affected. */ static void adjustHiliteOnBakScroll(XtermWidget xw, int amount) { TScreen *screen = &(xw->screen); int lo_row = screen->top_marg; int hi_row = screen->bot_marg; TRACE2(("adjustSelection BAK %s by %d (%s)\n", screen->whichBuf ? "alternate" : "normal", amount, "visible")); TRACE2((" before highlite %d.%d .. %d.%d\n", screen->startH.row, screen->startH.col, screen->endH.row, screen->endH.col)); TRACE2((" margins %d..%d\n", screen->top_marg, screen->bot_marg)); if (screen->endH.row >= hi_row && screen->endH.row + amount > hi_row) { /* truncate the selection because its start would move out of region */ if (hi_row - amount >= screen->startH.row) { TRACE2(("truncate selection by changing start %d.%d to %d.%d\n", screen->startH.row, screen->startH.col, hi_row - amount, 0)); screen->endH.row = hi_row - amount; screen->endH.col = 0; } else { TRACE2(("deselect because %d.%d .. %d.%d shifted %d is outside margins %d..%d\n", screen->startH.row, screen->startH.col, screen->endH.row, screen->endH.col, amount, lo_row, hi_row)); ScrnDisownSelection(xw); } } else if (screen->endH.row >= lo_row && screen->startH.row < lo_row) { ScrnDisownSelection(xw); } else if (screen->endH.row > hi_row && screen->startH.row > hi_row) { ScrnDisownSelection(xw); } TRACE2((" after highlite %d.%d .. %d.%d\n", screen->startH.row, screen->startH.col, screen->endH.row, screen->endH.col)); } /* * scrolls the screen by amount lines, erases bottom, doesn't alter * cursor position (i.e. cursor moves down amount relative to text). * All done within the scrolling region, of course. * requires: amount > 0 */ void xtermScroll(XtermWidget xw, int amount) { TScreen *screen = &(xw->screen); int i = screen->bot_marg - screen->top_marg + 1; int shift; int bot; int refreshtop = 0; int refreshheight; int scrolltop; int scrollheight; Boolean scroll_all_lines = (Boolean) (screen->scrollWidget && !screen->whichBuf && screen->top_marg == 0); TRACE(("xtermScroll count=%d\n", amount)); screen->cursor_busy += 1; screen->cursor_moved = True; if (screen->cursor_state) HideCursor(); if (amount > i) amount = i; if (ScrnHaveSelection(screen)) adjustHiliteOnFwdScroll(xw, amount, scroll_all_lines); if (screen->jumpscroll) { if (screen->scroll_amt > 0) { if (!screen->fastscroll) { if (screen->refresh_amt + amount > i) FlushScroll(xw); } screen->scroll_amt += amount; screen->refresh_amt += amount; } else { if (!screen->fastscroll) { if (screen->scroll_amt < 0) FlushScroll(xw); } screen->scroll_amt = amount; screen->refresh_amt = amount; } refreshheight = 0; } else { ScrollSelection(screen, -(amount), False); if (amount == i) { ClearScreen(xw); screen->cursor_busy -= 1; return; } shift = INX2ROW(screen, 0); bot = screen->max_row - shift; scrollheight = i - amount; refreshheight = amount; if ((refreshtop = screen->bot_marg - refreshheight + 1 + shift) > (i = screen->max_row - refreshheight + 1)) refreshtop = i; if (scroll_all_lines) { scrolltop = 0; if ((scrollheight += shift) > i) scrollheight = i; if ((i = screen->savedlines) < screen->savelines) { if ((i += amount) > screen->savelines) i = screen->savelines; screen->savedlines = i; ScrollBarDrawThumb(screen->scrollWidget); } } else { scrolltop = screen->top_marg + shift; if ((i = screen->bot_marg - bot) > 0) { scrollheight -= i; if ((i = screen->top_marg + amount - 1 - bot) >= 0) { refreshtop += i; refreshheight -= i; } } } if (screen->multiscroll && amount == 1 && screen->topline == 0 && screen->top_marg == 0 && screen->bot_marg == screen->max_row) { if (screen->incopy < 0 && screen->scrolls == 0) CopyWait(xw); screen->scrolls++; } scrolling_copy_area(xw, scrolltop + amount, scrollheight, amount); if (refreshheight > 0) { ClearCurBackground(xw, (int) refreshtop * FontHeight(screen) + screen->border, (int) OriginX(screen), (unsigned) (refreshheight * FontHeight(screen)), (unsigned) Width(screen)); if (refreshheight > shift) refreshheight = shift; } } if (amount > 0) { if (scroll_all_lines) { ScrnDeleteLine(xw, screen->saveBuf_index, screen->bot_marg + screen->savelines, 0, (unsigned) amount); } else { ScrnDeleteLine(xw, screen->visbuf, screen->bot_marg, screen->top_marg, (unsigned) amount); } } if (refreshheight > 0) { ScrnRefresh(xw, refreshtop, 0, refreshheight, MaxCols(screen), False); } screen->cursor_busy -= 1; return; } /* * Reverse scrolls the screen by amount lines, erases top, doesn't alter * cursor position (i.e. cursor moves up amount relative to text). * All done within the scrolling region, of course. * Requires: amount > 0 */ void RevScroll(XtermWidget xw, int amount) { TScreen *screen = &(xw->screen); int i = screen->bot_marg - screen->top_marg + 1; int shift; int bot; int refreshtop; int refreshheight; int scrolltop; int scrollheight; TRACE(("RevScroll count=%d\n", amount)); screen->cursor_busy += 1; screen->cursor_moved = True; if (screen->cursor_state) HideCursor(); if (amount > i) amount = i; if (ScrnHaveSelection(screen)) adjustHiliteOnBakScroll(xw, amount); if (screen->jumpscroll) { if (screen->scroll_amt < 0) { if (-screen->refresh_amt + amount > i) FlushScroll(xw); screen->scroll_amt -= amount; screen->refresh_amt -= amount; } else { if (screen->scroll_amt > 0) FlushScroll(xw); screen->scroll_amt = -amount; screen->refresh_amt = -amount; } } else { shift = INX2ROW(screen, 0); bot = screen->max_row - shift; refreshheight = amount; scrollheight = screen->bot_marg - screen->top_marg - refreshheight + 1; refreshtop = screen->top_marg + shift; scrolltop = refreshtop + refreshheight; if ((i = screen->bot_marg - bot) > 0) scrollheight -= i; if ((i = screen->top_marg + refreshheight - 1 - bot) > 0) refreshheight -= i; if (screen->multiscroll && amount == 1 && screen->topline == 0 && screen->top_marg == 0 && screen->bot_marg == screen->max_row) { if (screen->incopy < 0 && screen->scrolls == 0) CopyWait(xw); screen->scrolls++; } scrolling_copy_area(xw, scrolltop - amount, scrollheight, -amount); if (refreshheight > 0) { ClearCurBackground(xw, (int) refreshtop * FontHeight(screen) + screen->border, (int) OriginX(screen), (unsigned) (refreshheight * FontHeight(screen)), (unsigned) Width(screen)); } } if (amount > 0) { ScrnInsertLine(xw, screen->visbuf, screen->bot_marg, screen->top_marg, (unsigned) amount); } screen->cursor_busy -= 1; return; } /* * write a string str of length len onto the screen at * the current cursor position. update cursor position. */ void WriteText(XtermWidget xw, IChar * str, Cardinal len) { TScreen *screen = &(xw->screen); LineData *ld = 0; unsigned test; unsigned flags = xw->flags; CellColor fg_bg = makeColorPair(xw->cur_foreground, xw->cur_background); unsigned cells = visual_width(str, len); GC currentGC; TRACE(("WriteText (%2d,%2d) %3d:%s\n", screen->cur_row, screen->cur_col, len, visibleIChar(str, len))); if (ScrnHaveSelection(screen) && ScrnIsLineInSelection(screen, INX2ROW(screen, screen->cur_row))) { ScrnDisownSelection(xw); } /* if we are in insert-mode, reserve space for the new cells */ if (flags & INSERT) { InsertChar(xw, cells); } if (AddToVisible(xw) && (ld = getLineData(screen, screen->cur_row)) != 0) { if (screen->cursor_state) HideCursor(); /* * If we overwrite part of a multi-column character, fill the rest * of it with blanks. */ if_OPT_WIDE_CHARS(screen, { int kl; int kr; if (DamagedCurCells(screen, cells, &kl, &kr)) ClearInLine(xw, screen->cur_row, kl, (unsigned) (kr - kl + 1)); }); if (flags & INVISIBLE) { Cardinal n; for (n = 0; n < cells; ++n) str[n] = ' '; } TRACE(("WriteText calling drawXtermText (%d) (%d,%d)\n", LineCharSet(screen, ld), screen->cur_col, screen->cur_row)); test = flags; checkVeryBoldColors(test, xw->cur_foreground); /* make sure that the correct GC is current */ currentGC = updatedXtermGC(xw, flags, fg_bg, False); drawXtermText(xw, test & DRAWX_MASK, currentGC, LineCursorX(screen, ld, screen->cur_col), CursorY(screen, screen->cur_row), LineCharSet(screen, ld), str, len, 0); resetXtermGC(xw, flags, False); } ScrnWriteText(xw, str, flags, fg_bg, len); CursorForward(screen, (int) cells); #if OPT_ZICONBEEP /* Flag icon name with "***" on window output when iconified. */ if (resource.zIconBeep && mapstate == IsUnmapped && !screen->zIconBeep_flagged) { static char *icon_name; static Arg args[] = { {XtNiconName, (XtArgVal) & icon_name} }; icon_name = NULL; XtGetValues(toplevel, args, XtNumber(args)); if (icon_name != NULL) { screen->zIconBeep_flagged = True; ChangeIconName(xw, icon_name); } xtermBell(xw, resource.zIconBeep, XkbBI_Info); } mapstate = -1; #endif /* OPT_ZICONBEEP */ return; } /* * If cursor not in scrolling region, returns. Else, * inserts n blank lines at the cursor's position. Lines above the * bottom margin are lost. */ void InsertLine(XtermWidget xw, int n) { TScreen *screen = &(xw->screen); int i; int shift; int bot; int refreshtop; int refreshheight; int scrolltop; int scrollheight; if (!ScrnIsLineInMargins(screen, INX2ROW(screen, screen->cur_row))) return; TRACE(("InsertLine count=%d\n", n)); if (screen->cursor_state) HideCursor(); if (ScrnHaveSelection(screen) && ScrnAreLinesInSelection(screen, screen->top_marg, screen->bot_marg)) { ScrnDisownSelection(xw); } screen->do_wrap = False; if (n > (i = screen->bot_marg - screen->cur_row + 1)) n = i; if (screen->jumpscroll) { if (screen->scroll_amt <= 0 && screen->cur_row <= -screen->refresh_amt) { if (-screen->refresh_amt + n > MaxRows(screen)) FlushScroll(xw); screen->scroll_amt -= n; screen->refresh_amt -= n; } else { if (screen->scroll_amt) FlushScroll(xw); } } if (!screen->scroll_amt) { shift = INX2ROW(screen, 0); bot = screen->max_row - shift; refreshheight = n; scrollheight = screen->bot_marg - screen->cur_row - refreshheight + 1; refreshtop = screen->cur_row + shift; scrolltop = refreshtop + refreshheight; if ((i = screen->bot_marg - bot) > 0) scrollheight -= i; if ((i = screen->cur_row + refreshheight - 1 - bot) > 0) refreshheight -= i; vertical_copy_area(xw, scrolltop - n, scrollheight, -n); if (refreshheight > 0) { ClearCurBackground(xw, (int) refreshtop * FontHeight(screen) + screen->border, (int) OriginX(screen), (unsigned) (refreshheight * FontHeight(screen)), (unsigned) Width(screen)); } } if (n > 0) { ScrnInsertLine(xw, screen->visbuf, screen->bot_marg, screen->cur_row, (unsigned) n); } } /* * If cursor not in scrolling region, returns. Else, deletes n lines * at the cursor's position, lines added at bottom margin are blank. */ void DeleteLine(XtermWidget xw, int n) { TScreen *screen = &(xw->screen); int i; int shift; int bot; int refreshtop; int refreshheight; int scrolltop; int scrollheight; Boolean scroll_all_lines = (Boolean) (screen->scrollWidget && !screen->whichBuf && screen->cur_row == 0); if (!ScrnIsLineInMargins(screen, INX2ROW(screen, screen->cur_row))) return; TRACE(("DeleteLine count=%d\n", n)); if (screen->cursor_state) HideCursor(); if (ScrnHaveSelection(screen) && ScrnAreLinesInSelection(screen, screen->top_marg, screen->bot_marg)) { ScrnDisownSelection(xw); } screen->do_wrap = False; if (n > (i = screen->bot_marg - screen->cur_row + 1)) n = i; if (screen->jumpscroll) { if (screen->scroll_amt >= 0 && screen->cur_row == screen->top_marg) { if (screen->refresh_amt + n > MaxRows(screen)) FlushScroll(xw); screen->scroll_amt += n; screen->refresh_amt += n; } else { if (screen->scroll_amt) FlushScroll(xw); } } if (!screen->scroll_amt) { shift = INX2ROW(screen, 0); bot = screen->max_row - shift; scrollheight = i - n; refreshheight = n; if ((refreshtop = screen->bot_marg - refreshheight + 1 + shift) > (i = screen->max_row - refreshheight + 1)) refreshtop = i; if (scroll_all_lines) { scrolltop = 0; if ((scrollheight += shift) > i) scrollheight = i; if ((i = screen->savedlines) < screen->savelines) { if ((i += n) > screen->savelines) i = screen->savelines; screen->savedlines = i; ScrollBarDrawThumb(screen->scrollWidget); } } else { scrolltop = screen->cur_row + shift; if ((i = screen->bot_marg - bot) > 0) { scrollheight -= i; if ((i = screen->cur_row + n - 1 - bot) >= 0) { refreshheight -= i; } } } vertical_copy_area(xw, scrolltop + n, scrollheight, n); if (refreshheight > 0) { ClearCurBackground(xw, (int) refreshtop * FontHeight(screen) + screen->border, (int) OriginX(screen), (unsigned) (refreshheight * FontHeight(screen)), (unsigned) Width(screen)); } } /* adjust screen->buf */ if (n > 0) { if (scroll_all_lines) ScrnDeleteLine(xw, screen->saveBuf_index, screen->bot_marg + screen->savelines, 0, (unsigned) n); else ScrnDeleteLine(xw, screen->visbuf, screen->bot_marg, screen->cur_row, (unsigned) n); } } /* * Insert n blanks at the cursor's position, no wraparound */ void InsertChar(XtermWidget xw, unsigned n) { TScreen *screen = &(xw->screen); LineData *ld; unsigned limit; int row = INX2ROW(screen, screen->cur_row); if (screen->cursor_state) HideCursor(); TRACE(("InsertChar count=%d\n", n)); if (ScrnHaveSelection(screen) && ScrnIsLineInSelection(screen, row)) { ScrnDisownSelection(xw); } screen->do_wrap = False; assert(screen->cur_col <= screen->max_col); limit = (unsigned) (MaxCols(screen) - screen->cur_col); if (n > limit) n = limit; assert(n != 0); if (AddToVisible(xw) && (ld = getLineData(screen, screen->cur_row)) != 0) { int col = MaxCols(screen) - (int) n; /* * If we shift part of a multi-column character, fill the rest * of it with blanks. Do similar repair for the text which will * be shifted into the right-margin. */ if_OPT_WIDE_CHARS(screen, { int kl; int kr = screen->cur_col; if (DamagedCurCells(screen, n, &kl, (int *) 0) && kr > kl) { ClearInLine(xw, screen->cur_row, kl, (unsigned) (kr - kl + 1)); } kr = screen->max_col - (int) n + 1; if (DamagedCells(screen, n, &kl, (int *) 0, screen->cur_row, kr) && kr > kl) { ClearInLine(xw, screen->cur_row, kl, (unsigned) (kr - kl + 1)); } }); #if OPT_DEC_CHRSET if (CSET_DOUBLE(GetLineDblCS(ld))) { col = MaxCols(screen) / 2 - (int) n; } #endif /* * prevent InsertChar from shifting the end of a line over * if it is being appended to */ if (non_blank_line(screen, screen->cur_row, screen->cur_col, MaxCols(screen))) { horizontal_copy_area(xw, screen->cur_col, col - screen->cur_col, (int) n); } ClearCurBackground(xw, CursorY(screen, screen->cur_row), LineCursorX(screen, ld, screen->cur_col), (unsigned) FontHeight(screen), n * (unsigned) LineFontWidth(screen, ld)); } /* adjust screen->buf */ ScrnInsertChar(xw, n); } /* * Deletes n chars at the cursor's position, no wraparound. */ void DeleteChar(XtermWidget xw, unsigned n) { TScreen *screen = &(xw->screen); LineData *ld; unsigned limit; int row = INX2ROW(screen, screen->cur_row); if (screen->cursor_state) HideCursor(); TRACE(("DeleteChar count=%d\n", n)); if (ScrnHaveSelection(screen) && ScrnIsLineInSelection(screen, row)) { ScrnDisownSelection(xw); } screen->do_wrap = False; assert(screen->cur_col <= screen->max_col); limit = (unsigned) (MaxCols(screen) - screen->cur_col); if (n > limit) n = limit; assert(n != 0); if (AddToVisible(xw) && (ld = getLineData(screen, screen->cur_row)) != 0) { int col = MaxCols(screen) - (int) n; /* * If we delete part of a multi-column character, fill the rest * of it with blanks. */ if_OPT_WIDE_CHARS(screen, { int kl; int kr; if (DamagedCurCells(screen, n, &kl, &kr)) ClearInLine(xw, screen->cur_row, kl, (unsigned) (kr - kl + 1)); }); #if OPT_DEC_CHRSET if (CSET_DOUBLE(GetLineDblCS(ld))) { col = MaxCols(screen) / 2 - (int) n; } #endif horizontal_copy_area(xw, (screen->cur_col + (int) n), col - screen->cur_col, -((int) n)); ClearCurBackground(xw, CursorY(screen, screen->cur_row), LineCursorX(screen, ld, col), (unsigned) FontHeight(screen), n * (unsigned) LineFontWidth(screen, ld)); } if (n != 0) { /* adjust screen->buf */ ScrnDeleteChar(xw, n); } } /* * Clear from cursor position to beginning of display, inclusive. */ static void ClearAbove(XtermWidget xw) { TScreen *screen = &(xw->screen); if (screen->protected_mode != OFF_PROTECT) { int row; unsigned len = (unsigned) MaxCols(screen); assert(screen->max_col >= 0); for (row = 0; row <= screen->max_row; row++) ClearInLine(xw, row, 0, len); } else { int top, height; if (screen->cursor_state) HideCursor(); if ((top = INX2ROW(screen, 0)) <= screen->max_row) { if (screen->scroll_amt) FlushScroll(xw); if ((height = screen->cur_row + top) > screen->max_row) height = screen->max_row; if ((height -= top) > 0) { ClearCurBackground(xw, top * FontHeight(screen) + screen->border, OriginX(screen), (unsigned) (height * FontHeight(screen)), (unsigned) (Width(screen))); } } ClearBufRows(xw, 0, screen->cur_row - 1); } if (INX2ROW(screen, screen->cur_row) <= screen->max_row) ClearLeft(xw); } /* * Clear from cursor position to end of display, inclusive. */ static void ClearBelow(XtermWidget xw) { TScreen *screen = &(xw->screen); ClearRight(xw, -1); if (screen->protected_mode != OFF_PROTECT) { int row; unsigned len = (unsigned) MaxCols(screen); assert(screen->max_col >= 0); for (row = screen->cur_row + 1; row <= screen->max_row; row++) ClearInLine(xw, row, 0, len); } else { int top; if ((top = INX2ROW(screen, screen->cur_row)) <= screen->max_row) { if (screen->scroll_amt) FlushScroll(xw); if (++top <= screen->max_row) { ClearCurBackground(xw, top * FontHeight(screen) + screen->border, OriginX(screen), (unsigned) ((screen->max_row - top + 1) * FontHeight(screen)), (unsigned) (Width(screen))); } } ClearBufRows(xw, screen->cur_row + 1, screen->max_row); } } /* * Clear the given row, for the given range of columns, returning 1 if no * protected characters were found, 0 otherwise. */ static int ClearInLine2(XtermWidget xw, int flags, int row, int col, unsigned len) { TScreen *screen = &(xw->screen); LineData *ld; int rc = 1; TRACE(("ClearInLine(row=%d, col=%d, len=%d) vs %d..%d\n", row, col, len, screen->startH.row, screen->startH.col)); if (ScrnHaveSelection(screen) && ScrnIsLineInSelection(screen, row)) { ScrnDisownSelection(xw); } if (col + (int) len >= MaxCols(screen)) { len = (unsigned) (MaxCols(screen) - col); } /* If we've marked protected text on the screen, we'll have to * check each time we do an erase. */ if (screen->protected_mode != OFF_PROTECT) { unsigned n; Char *attrs = getLineData(screen, row)->attribs + col; int saved_mode = screen->protected_mode; Bool done; /* disable this branch during recursion */ screen->protected_mode = OFF_PROTECT; do { done = True; for (n = 0; n < len; n++) { if (attrs[n] & PROTECTED) { rc = 0; /* found a protected segment */ if (n != 0) { ClearInLine(xw, row, col, n); } while ((n < len) && (attrs[n] & PROTECTED)) { n++; } done = False; break; } } /* setup for another segment, past the protected text */ if (!done) { attrs += n; col += (int) n; len -= n; } } while (!done); screen->protected_mode = saved_mode; if (len <= 0) return 0; } /* fall through to the final non-protected segment */ if (screen->cursor_state) HideCursor(); screen->do_wrap = False; if (AddToVisible(xw) && (ld = getLineData(screen, row)) != 0) { ClearCurBackground(xw, CursorY(screen, row), LineCursorX(screen, ld, col), (unsigned) FontHeight(screen), len * (unsigned) LineFontWidth(screen, ld)); } if (len != 0) { ClearCells(xw, flags, len, row, col); } return rc; } int ClearInLine(XtermWidget xw, int row, int col, unsigned len) { TScreen *screen = &(xw->screen); int flags = 0; /* * If we're clearing to the end of the line, we won't count this as * "drawn" characters. We'll only do cut/paste on "drawn" characters, * so this has the effect of suppressing trailing blanks from a * selection. */ if (col + (int) len < MaxCols(screen)) { flags |= CHARDRAWN; } return ClearInLine2(xw, flags, row, col, len); } /* * Clear the next n characters on the cursor's line, including the cursor's * position. */ void ClearRight(XtermWidget xw, int n) { TScreen *screen = &(xw->screen); LineData *ld; unsigned len = (unsigned) (MaxCols(screen) - screen->cur_col); assert(screen->max_col >= 0); assert(screen->max_col >= screen->cur_col); if (n < 0) /* the remainder of the line */ n = MaxCols(screen); if (n == 0) /* default for 'ECH' */ n = 1; if (len > (unsigned) n) len = (unsigned) n; ld = getLineData(screen, screen->cur_row); if (AddToVisible(xw)) { if_OPT_WIDE_CHARS(screen, { int col = screen->cur_col; int row = screen->cur_row; int kl; int kr; int xx; if (DamagedCurCells(screen, len, &kl, &kr) && kr >= kl) { xx = col; if (kl < xx) { ClearInLine2(xw, 0, row, kl, (unsigned) (xx - kl)); } xx = col + (int) len - 1; if (kr > xx) { ClearInLine2(xw, 0, row, xx + 1, (unsigned) (kr - xx)); } } }); (void) ClearInLine(xw, screen->cur_row, screen->cur_col, len); } else { ScrnClearCells(xw, screen->cur_row, screen->cur_col, len); } /* with the right part cleared, we can't be wrapping */ LineClrWrapped(ld); screen->do_wrap = False; } /* * Clear first part of cursor's line, inclusive. */ static void ClearLeft(XtermWidget xw) { TScreen *screen = &(xw->screen); unsigned len = (unsigned) screen->cur_col + 1; assert(screen->cur_col >= 0); if (AddToVisible(xw)) { if_OPT_WIDE_CHARS(screen, { int row = screen->cur_row; int kl; int kr; if (DamagedCurCells(screen, 1, &kl, &kr) && kr >= kl) { ClearInLine2(xw, 0, row, kl, (unsigned) (kr - kl + 1)); } }); (void) ClearInLine(xw, screen->cur_row, 0, len); } else { ScrnClearCells(xw, screen->cur_row, 0, len); } } /* * Erase the cursor's line. */ static void ClearLine(XtermWidget xw) { TScreen *screen = &(xw->screen); unsigned len = (unsigned) MaxCols(screen); assert(screen->max_col >= 0); (void) ClearInLine(xw, screen->cur_row, 0, len); } void ClearScreen(XtermWidget xw) { TScreen *screen = &(xw->screen); int top; if (screen->cursor_state) HideCursor(); ScrnDisownSelection(xw); screen->do_wrap = False; if ((top = INX2ROW(screen, 0)) <= screen->max_row) { if (screen->scroll_amt) FlushScroll(xw); ClearCurBackground(xw, top * FontHeight(screen) + screen->border, OriginX(screen), (unsigned) ((screen->max_row - top + 1) * FontHeight(screen)), (unsigned) Width(screen)); } ClearBufRows(xw, 0, screen->max_row); } /* * If we've written protected text DEC-style, and are issuing a non-DEC * erase, temporarily reset the protected_mode flag so that the erase will * ignore the protected flags. */ void do_erase_line(XtermWidget xw, int param, int mode) { TScreen *screen = &(xw->screen); int saved_mode = screen->protected_mode; if (saved_mode == DEC_PROTECT && saved_mode != mode) { screen->protected_mode = OFF_PROTECT; } switch (param) { case -1: /* DEFAULT */ case 0: ClearRight(xw, -1); break; case 1: ClearLeft(xw); break; case 2: ClearLine(xw); break; } screen->protected_mode = saved_mode; } /* * Just like 'do_erase_line()', except that this intercepts ED controls. If we * clear the whole screen, we'll get the return-value from ClearInLine, and * find if there were any protected characters left. If not, reset the * protected mode flag in the screen data (it's slower). */ void do_erase_display(XtermWidget xw, int param, int mode) { TScreen *screen = &(xw->screen); int saved_mode = screen->protected_mode; if (saved_mode == DEC_PROTECT && saved_mode != mode) screen->protected_mode = OFF_PROTECT; switch (param) { case -1: /* DEFAULT */ case 0: if (screen->cur_row == 0 && screen->cur_col == 0) { screen->protected_mode = saved_mode; do_erase_display(xw, 2, mode); saved_mode = screen->protected_mode; } else ClearBelow(xw); break; case 1: if (screen->cur_row == screen->max_row && screen->cur_col == screen->max_col) { screen->protected_mode = saved_mode; do_erase_display(xw, 2, mode); saved_mode = screen->protected_mode; } else ClearAbove(xw); break; case 2: /* * We use 'ClearScreen()' throughout the remainder of the * program for places where we don't care if the characters are * protected or not. So we modify the logic around this call * on 'ClearScreen()' to handle protected characters. */ if (screen->protected_mode != OFF_PROTECT) { int row; int rc = 1; unsigned len = (unsigned) MaxCols(screen); assert(screen->max_col >= 0); for (row = 0; row <= screen->max_row; row++) rc &= ClearInLine(xw, row, 0, len); if (rc != 0) saved_mode = OFF_PROTECT; } else { ClearScreen(xw); } break; case 3: /* xterm addition - erase saved lines. */ screen->savedlines = 0; ScrollBarDrawThumb(screen->scrollWidget); break; } screen->protected_mode = saved_mode; } static void CopyWait(XtermWidget xw) { TScreen *screen = &(xw->screen); XEvent reply; XEvent *rep = &reply; while (1) { XWindowEvent(screen->display, VWindow(screen), ExposureMask, &reply); switch (reply.type) { case Expose: HandleExposure(xw, &reply); break; case NoExpose: case GraphicsExpose: if (screen->incopy <= 0) { screen->incopy = 1; if (screen->scrolls > 0) screen->scrolls--; } if (reply.type == GraphicsExpose) HandleExposure(xw, &reply); if ((reply.type == NoExpose) || ((XExposeEvent *) rep)->count == 0) { if (screen->incopy <= 0 && screen->scrolls > 0) screen->scrolls--; if (screen->scrolls == 0) { screen->incopy = 0; return; } screen->incopy = -1; } break; } } } /* * used by vertical_copy_area and and horizontal_copy_area */ static void copy_area(XtermWidget xw, int src_x, int src_y, unsigned width, unsigned height, int dest_x, int dest_y) { TScreen *screen = &(xw->screen); if (width != 0 && height != 0) { /* wait for previous CopyArea to complete unless multiscroll is enabled and active */ if (screen->incopy && screen->scrolls == 0) CopyWait(xw); screen->incopy = -1; /* save for translating Expose events */ screen->copy_src_x = src_x; screen->copy_src_y = src_y; screen->copy_width = width; screen->copy_height = height; screen->copy_dest_x = dest_x; screen->copy_dest_y = dest_y; XCopyArea(screen->display, VWindow(screen), VWindow(screen), NormalGC(xw, screen), src_x, src_y, width, height, dest_x, dest_y); } } /* * use when inserting or deleting characters on the current line */ static void horizontal_copy_area(XtermWidget xw, int firstchar, /* char pos on screen to start copying at */ int nchars, int amount) /* number of characters to move right */ { TScreen *screen = &(xw->screen); LineData *ld; if ((ld = getLineData(screen, screen->cur_row)) != 0) { int src_x = LineCursorX(screen, ld, firstchar); int src_y = CursorY(screen, screen->cur_row); copy_area(xw, src_x, src_y, (unsigned) (nchars * LineFontWidth(screen, ld)), (unsigned) FontHeight(screen), src_x + amount * LineFontWidth(screen, ld), src_y); } } /* * use when inserting or deleting lines from the screen */ static void vertical_copy_area(XtermWidget xw, int firstline, /* line on screen to start copying at */ int nlines, int amount) /* number of lines to move up (neg=down) */ { TScreen *screen = &(xw->screen); if (nlines > 0) { int src_x = OriginX(screen); int src_y = firstline * FontHeight(screen) + screen->border; copy_area(xw, src_x, src_y, (unsigned) Width(screen), (unsigned) (nlines * FontHeight(screen)), src_x, src_y - amount * FontHeight(screen)); } } /* * use when scrolling the entire screen */ void scrolling_copy_area(XtermWidget xw, int firstline, /* line on screen to start copying at */ int nlines, int amount) /* number of lines to move up (neg=down) */ { if (nlines > 0) { vertical_copy_area(xw, firstline, nlines, amount); } } /* * Handler for Expose events on the VT widget. * Returns 1 iff the area where the cursor was got refreshed. */ int HandleExposure(XtermWidget xw, XEvent * event) { TScreen *screen = &(xw->screen); XExposeEvent *reply = (XExposeEvent *) event; #ifndef NO_ACTIVE_ICON if (reply->window == screen->iconVwin.window) { WhichVWin(screen) = &screen->iconVwin; TRACE(("HandleExposure - icon")); } else { WhichVWin(screen) = &screen->fullVwin; TRACE(("HandleExposure - normal")); } TRACE((" event %d,%d %dx%d\n", reply->y, reply->x, reply->height, reply->width)); #endif /* NO_ACTIVE_ICON */ /* if not doing CopyArea or if this is a GraphicsExpose, don't translate */ if (!screen->incopy || event->type != Expose) return handle_translated_exposure(xw, reply->x, reply->y, reply->width, reply->height); else { /* compute intersection of area being copied with area being exposed. */ int both_x1 = Max(screen->copy_src_x, reply->x); int both_y1 = Max(screen->copy_src_y, reply->y); int both_x2 = Min(screen->copy_src_x + (int) screen->copy_width, (reply->x + (int) reply->width)); int both_y2 = Min(screen->copy_src_y + (int) screen->copy_height, (reply->y + (int) reply->height)); int value = 0; /* was anything copied affected? */ if (both_x2 > both_x1 && both_y2 > both_y1) { /* do the copied area */ value = handle_translated_exposure (xw, reply->x + screen->copy_dest_x - screen->copy_src_x, reply->y + screen->copy_dest_y - screen->copy_src_y, reply->width, reply->height); } /* was anything not copied affected? */ if (reply->x < both_x1 || reply->y < both_y1 || reply->x + reply->width > both_x2 || reply->y + reply->height > both_y2) value = handle_translated_exposure(xw, reply->x, reply->y, reply->width, reply->height); return value; } } static void set_background(XtermWidget xw, int color GCC_UNUSED) { TScreen *screen = &(xw->screen); Pixel c = getXtermBackground(xw, xw->flags, color); TRACE(("set_background(%d) %#lx\n", color, c)); XSetWindowBackground(screen->display, VShellWindow, c); XSetWindowBackground(screen->display, VWindow(screen), c); } /* * Called by the ExposeHandler to do the actual repaint after the coordinates * have been translated to allow for any CopyArea in progress. * The rectangle passed in is pixel coordinates. */ static int handle_translated_exposure(XtermWidget xw, int rect_x, int rect_y, int rect_width, int rect_height) { TScreen *screen = &(xw->screen); int toprow, leftcol, nrows, ncols; int x0, x1; int y0, y1; int result = 0; TRACE(("handle_translated_exposure at %d,%d size %dx%d\n", rect_y, rect_x, rect_height, rect_width)); x0 = (rect_x - OriginX(screen)); x1 = (x0 + rect_width); y0 = (rect_y - OriginY(screen)); y1 = (y0 + rect_height); if ((x0 < 0 || y0 < 0 || x1 > Width(screen) || y1 > Height(screen))) { set_background(xw, -1); XClearArea(screen->display, VWindow(screen), rect_x, rect_y, (unsigned) rect_width, (unsigned) rect_height, False); } toprow = y0 / FontHeight(screen); if (toprow < 0) toprow = 0; leftcol = x0 / FontWidth(screen); if (leftcol < 0) leftcol = 0; nrows = (y1 - 1) / FontHeight(screen) - toprow + 1; ncols = (x1 - 1) / FontWidth(screen) - leftcol + 1; toprow -= screen->scrolls; if (toprow < 0) { nrows += toprow; toprow = 0; } if (toprow + nrows > MaxRows(screen)) nrows = MaxRows(screen) - toprow; if (leftcol + ncols > MaxCols(screen)) ncols = MaxCols(screen) - leftcol; if (nrows > 0 && ncols > 0) { ScrnRefresh(xw, toprow, leftcol, nrows, ncols, True); first_map_occurred(); if (screen->cur_row >= toprow && screen->cur_row < toprow + nrows && screen->cur_col >= leftcol && screen->cur_col < leftcol + ncols) { result = 1; } } TRACE(("...handle_translated_exposure %d\n", result)); return (result); } /***====================================================================***/ void GetColors(XtermWidget xw, ScrnColors * pColors) { TScreen *screen = &xw->screen; int n; pColors->which = 0; for (n = 0; n < NCOLORS; ++n) { SET_COLOR_VALUE(pColors, n, T_COLOR(screen, n)); } } void ChangeColors(XtermWidget xw, ScrnColors * pNew) { Bool repaint = False; TScreen *screen = &xw->screen; VTwin *win = WhichVWin(screen); TRACE(("ChangeColors\n")); if (COLOR_DEFINED(pNew, TEXT_CURSOR)) { T_COLOR(screen, TEXT_CURSOR) = COLOR_VALUE(pNew, TEXT_CURSOR); TRACE(("... TEXT_CURSOR: %#lx\n", T_COLOR(screen, TEXT_CURSOR))); /* no repaint needed */ } else if ((T_COLOR(screen, TEXT_CURSOR) == T_COLOR(screen, TEXT_FG)) && (COLOR_DEFINED(pNew, TEXT_FG))) { T_COLOR(screen, TEXT_CURSOR) = COLOR_VALUE(pNew, TEXT_FG); TRACE(("... TEXT_CURSOR: %#lx\n", T_COLOR(screen, TEXT_CURSOR))); repaint = screen->Vshow; } if (COLOR_DEFINED(pNew, TEXT_FG)) { Pixel fg = COLOR_VALUE(pNew, TEXT_FG); T_COLOR(screen, TEXT_FG) = fg; TRACE(("... TEXT_FG: %#lx\n", T_COLOR(screen, TEXT_FG))); if (screen->Vshow) { setCgsFore(xw, win, gcNorm, fg); setCgsBack(xw, win, gcNormReverse, fg); setCgsFore(xw, win, gcBold, fg); setCgsBack(xw, win, gcBoldReverse, fg); repaint = True; } } if (COLOR_DEFINED(pNew, TEXT_BG)) { Pixel bg = COLOR_VALUE(pNew, TEXT_BG); T_COLOR(screen, TEXT_BG) = bg; TRACE(("... TEXT_BG: %#lx\n", T_COLOR(screen, TEXT_BG))); if (screen->Vshow) { setCgsBack(xw, win, gcNorm, bg); setCgsFore(xw, win, gcNormReverse, bg); setCgsBack(xw, win, gcBold, bg); setCgsFore(xw, win, gcBoldReverse, bg); set_background(xw, -1); repaint = True; } } #if OPT_HIGHLIGHT_COLOR if (COLOR_DEFINED(pNew, HIGHLIGHT_BG)) { T_COLOR(screen, HIGHLIGHT_BG) = COLOR_VALUE(pNew, HIGHLIGHT_BG); TRACE(("... HIGHLIGHT_BG: %#lx\n", T_COLOR(screen, HIGHLIGHT_BG))); repaint = screen->Vshow; } if (COLOR_DEFINED(pNew, HIGHLIGHT_FG)) { T_COLOR(screen, HIGHLIGHT_FG) = COLOR_VALUE(pNew, HIGHLIGHT_FG); TRACE(("... HIGHLIGHT_FG: %#lx\n", T_COLOR(screen, HIGHLIGHT_FG))); repaint = screen->Vshow; } #endif if (COLOR_DEFINED(pNew, MOUSE_FG) || (COLOR_DEFINED(pNew, MOUSE_BG))) { if (COLOR_DEFINED(pNew, MOUSE_FG)) { T_COLOR(screen, MOUSE_FG) = COLOR_VALUE(pNew, MOUSE_FG); TRACE(("... MOUSE_FG: %#lx\n", T_COLOR(screen, MOUSE_FG))); } if (COLOR_DEFINED(pNew, MOUSE_BG)) { T_COLOR(screen, MOUSE_BG) = COLOR_VALUE(pNew, MOUSE_BG); TRACE(("... MOUSE_BG: %#lx\n", T_COLOR(screen, MOUSE_BG))); } if (screen->Vshow) { recolor_cursor(screen, screen->pointer_cursor, T_COLOR(screen, MOUSE_FG), T_COLOR(screen, MOUSE_BG)); XDefineCursor(screen->display, VWindow(screen), screen->pointer_cursor); } #if OPT_TEK4014 if (TEK4014_SHOWN(xw)) { TekScreen *tekscr = &(tekWidget->screen); Window tekwin = TWindow(tekscr); if (tekwin) { recolor_cursor(screen, tekscr->arrow, T_COLOR(screen, MOUSE_FG), T_COLOR(screen, MOUSE_BG)); XDefineCursor(screen->display, tekwin, tekscr->arrow); } } #endif /* no repaint needed */ } if (COLOR_DEFINED(pNew, TEXT_FG) || COLOR_DEFINED(pNew, TEXT_BG) || COLOR_DEFINED(pNew, TEXT_CURSOR)) { set_cursor_gcs(xw); } #if OPT_TEK4014 if (COLOR_DEFINED(pNew, TEK_FG) || COLOR_DEFINED(pNew, TEK_BG)) { ChangeTekColors(tekWidget, screen, pNew); if (TEK4014_SHOWN(xw)) { TekRepaint(tekWidget); } } else if (COLOR_DEFINED(pNew, TEK_CURSOR)) { ChangeTekColors(tekWidget, screen, pNew); } #endif if (repaint) xtermRepaint(xw); } void xtermClear(XtermWidget xw) { TScreen *screen = &xw->screen; TRACE(("xtermClear\n")); XClearWindow(screen->display, VWindow(screen)); } void xtermRepaint(XtermWidget xw) { TScreen *screen = &xw->screen; TRACE(("xtermRepaint\n")); xtermClear(xw); ScrnRefresh(xw, 0, 0, MaxRows(screen), MaxCols(screen), True); } /***====================================================================***/ Boolean isDefaultForeground(const char *name) { return (Boolean) ! x_strcasecmp(name, XtDefaultForeground); } Boolean isDefaultBackground(const char *name) { return (Boolean) ! x_strcasecmp(name, XtDefaultBackground); } #if OPT_WIDE_CHARS /* * Check for Unicode BIDI control characters, which may be miscategorized via * wcwidth() and iswprint() as zero-width printable characters. */ Boolean isWideControl(unsigned ch) { Boolean result; switch (ch) { case 0x200E: case 0x200F: case 0x202A: case 0x202B: case 0x202C: case 0x202D: case 0x202E: result = True; break; default: result = False; break; } return result; } #endif /***====================================================================***/ typedef struct { Pixel fg; Pixel bg; } ToSwap; #if OPT_HIGHLIGHT_COLOR #define hc_param ,Bool hilite_color #define hc_value ,screen->hilite_color #else #define hc_param /* nothing */ #define hc_value /* nothing */ #endif /* * Use this to swap the foreground/background color values in the resource * data, and to build up a list of the pairs which must be swapped in the * GC cache. */ static void swapLocally(ToSwap * list, int *count, ColorRes * fg, ColorRes * bg hc_param) { ColorRes tmp; int n; Boolean found = False; #if OPT_COLOR_RES Pixel fg_color = fg->value; Pixel bg_color = bg->value; #else Pixel fg_color = *fg; Pixel bg_color = *bg; #endif #if OPT_HIGHLIGHT_COLOR if ((fg_color != bg_color) || !hilite_color) #endif { EXCHANGE(*fg, *bg, tmp); for (n = 0; n < *count; ++n) { if ((list[n].fg == fg_color && list[n].bg == bg_color) || (list[n].fg == bg_color && list[n].bg == fg_color)) { found = True; break; } } if (!found) { list[*count].fg = fg_color; list[*count].bg = bg_color; *count = *count + 1; TRACE(("swapLocally fg %#lx, bg %#lx ->%d\n", fg_color, bg_color, *count)); } } } static void reallySwapColors(XtermWidget xw, ToSwap * list, int count) { int j, k; TRACE(("reallySwapColors\n")); for (j = 0; j < count; ++j) { for_each_text_gc(k) { redoCgs(xw, list[j].fg, list[j].bg, (CgsEnum) k); } } } static void swapVTwinGCs(XtermWidget xw, VTwin * win) { swapCgs(xw, win, gcNorm, gcNormReverse); swapCgs(xw, win, gcBold, gcBoldReverse); } void ReverseVideo(XtermWidget xw) { TScreen *screen = &xw->screen; ToSwap listToSwap[5]; int numToSwap = 0; TRACE(("ReverseVideo\n")); /* * Swap SGR foreground and background colors. By convention, these are * the colors assigned to "black" (SGR #0) and "white" (SGR #7). Also, * SGR #8 and SGR #15 are the bold (or bright) versions of SGR #0 and * #7, respectively. * * We don't swap colors that happen to match the screen's foreground * and background because that tends to produce bizarre effects. */ #define swapAnyColor(name,a,b) swapLocally(listToSwap, &numToSwap, &(screen->name[a]), &(screen->name[b]) hc_value) #define swapAColor(a,b) swapAnyColor(Acolors, a, b) if_OPT_ISO_COLORS(screen, { swapAColor(0, 7); swapAColor(8, 15); }); if (T_COLOR(screen, TEXT_CURSOR) == T_COLOR(screen, TEXT_FG)) T_COLOR(screen, TEXT_CURSOR) = T_COLOR(screen, TEXT_BG); #define swapTColor(a,b) swapAnyColor(Tcolors, a, b) swapTColor(TEXT_FG, TEXT_BG); swapTColor(MOUSE_FG, MOUSE_BG); reallySwapColors(xw, listToSwap, numToSwap); swapVTwinGCs(xw, &(screen->fullVwin)); #ifndef NO_ACTIVE_ICON swapVTwinGCs(xw, &(screen->iconVwin)); #endif /* NO_ACTIVE_ICON */ xw->misc.re_verse = (Boolean) ! xw->misc.re_verse; if (XtIsRealized((Widget) xw)) { xtermDisplayCursor(xw); } #if OPT_TEK4014 if (TEK4014_SHOWN(xw)) { TekScreen *tekscr = &(tekWidget->screen); Window tekwin = TWindow(tekscr); recolor_cursor(screen, tekscr->arrow, T_COLOR(screen, MOUSE_FG), T_COLOR(screen, MOUSE_BG)); XDefineCursor(screen->display, tekwin, tekscr->arrow); } #endif if (screen->scrollWidget) ScrollBarReverseVideo(screen->scrollWidget); if (XtIsRealized((Widget) xw)) { set_background(xw, -1); } #if OPT_TEK4014 TekReverseVideo(tekWidget); #endif if (XtIsRealized((Widget) xw)) { xtermRepaint(xw); } #if OPT_TEK4014 if (TEK4014_SHOWN(xw)) { TekRepaint(tekWidget); } #endif ReverseOldColors(); set_cursor_gcs(xw); update_reversevideo(); TRACE(("...ReverseVideo\n")); } void recolor_cursor(TScreen * screen, Cursor cursor, /* X cursor ID to set */ unsigned long fg, /* pixel indexes to look up */ unsigned long bg) /* pixel indexes to look up */ { Display *dpy = screen->display; XColor colordefs[2]; /* 0 is foreground, 1 is background */ colordefs[0].pixel = fg; colordefs[1].pixel = bg; XQueryColors(dpy, DefaultColormap(dpy, DefaultScreen(dpy)), colordefs, 2); XRecolorCursor(dpy, cursor, colordefs, colordefs + 1); return; } #if OPT_RENDERFONT static XftColor * getXftColor(XtermWidget xw, Pixel pixel) { #define CACHE_SIZE 4 static struct { XftColor color; int use; } cache[CACHE_SIZE]; static int use; int i; int oldest, oldestuse; XColor color; oldestuse = 0x7fffffff; oldest = 0; for (i = 0; i < CACHE_SIZE; i++) { if (cache[i].use) { if (cache[i].color.pixel == pixel) { cache[i].use = ++use; return &cache[i].color; } } if (cache[i].use < oldestuse) { oldestuse = cache[i].use; oldest = i; } } i = oldest; color.pixel = pixel; XQueryColor(xw->screen.display, xw->core.colormap, &color); cache[i].color.color.red = color.red; cache[i].color.color.green = color.green; cache[i].color.color.blue = color.blue; cache[i].color.color.alpha = 0xffff; cache[i].color.pixel = pixel; cache[i].use = ++use; return &cache[i].color; } /* * The cell-width is related to, but not the same as the wide-character width. * We will only get useful values from wcwidth() for codes above 255. * Otherwise, interpret according to internal data. */ #if OPT_RENDERWIDE #if OPT_C1_PRINT #define XtermCellWidth(xw, ch) \ (((ch) == 0 || (ch) == 127) \ ? 0 \ : (((ch) < 256) \ ? (((ch) >= 128 && (ch) < 160) \ ? ((xw)->screen.c1_printable ? 1 : 0) \ : 1) \ : my_wcwidth(ch))) #else #define XtermCellWidth(xw, ch) \ (((ch) == 0 || (ch) == 127) \ ? 0 \ : (((ch) < 256) \ ? 1 \ : my_wcwidth(ch))) #endif #endif /* OPT_RENDERWIDE */ #define XFT_FONT(name) screen->name.font /* * fontconfig/Xft combination prior to 2.2 has a problem with * CJK truetype 'double-width' (bi-width/monospace) fonts leading * to the 's p a c e d o u t' rendering. Consequently, we can't * rely on XftDrawString8/16 when one of those fonts is used. * Instead, we need to roll out our own using XftDrawCharSpec. * A patch in the same spirit (but in a rather different form) * was applied to gnome vte and gtk2 port of vim. * See http://bugzilla.mozilla.org/show_bug.cgi?id=196312 */ static int xtermXftDrawString(XtermWidget xw, unsigned flags GCC_UNUSED, XftColor * color, XftFont * font, int x, int y, IChar * text, Cardinal len, Bool really) { TScreen *screen = &(xw->screen); int ncells = 0; if (len != 0) { #if OPT_RENDERWIDE XftCharSpec *sbuf; XftFont *wfont; Cardinal src, dst; XftFont *lastFont = 0; XftFont *currFont = 0; Cardinal start = 0; int charWidth; int fontnum = screen->menu_font_number; int fwidth = FontWidth(screen); #if OPT_ISO_COLORS if ((flags & UNDERLINE) && screen->italicULMode && XFT_FONT(renderWideItal[fontnum])) { wfont = XFT_FONT(renderWideItal[fontnum]); } else #endif if ((flags & BOLDATTR(screen)) && XFT_FONT(renderWideBold[fontnum])) { wfont = XFT_FONT(renderWideBold[fontnum]); } else { wfont = XFT_FONT(renderWideNorm[fontnum]); } BumpTypedBuffer(XftCharSpec, len); sbuf = BfBuf(XftCharSpec); for (src = dst = 0; src < len; src++) { FcChar32 wc = *text++; charWidth = XtermCellWidth(xw, (wchar_t) wc); if (charWidth < 0) continue; sbuf[dst].ucs4 = wc; sbuf[dst].x = (short) (x + fwidth * ncells); sbuf[dst].y = (short) (y); currFont = (charWidth == 2 && wfont != 0) ? wfont : font; ncells += charWidth; if (lastFont != currFont) { if ((lastFont != 0) && really) { XftDrawCharSpec(screen->renderDraw, color, lastFont, sbuf + start, (int) (dst - start)); } start = dst; lastFont = currFont; } ++dst; } if ((dst != start) && really) { XftDrawCharSpec(screen->renderDraw, color, lastFont, sbuf + start, (int) (dst - start)); } #else /* !OPT_RENDERWIDE */ if (really) { XftChar8 *buffer; int dst; BumpTypedBuffer(XftChar8, len); buffer = BfBuf(XftChar8); for (dst = 0; dst < (int) len; ++dst) buffer[dst] = CharOf(text[dst]); XftDrawString8(screen->renderDraw, color, font, x, y, buffer, (int) len); } ncells = (int) len; #endif } return ncells; } #define xtermXftWidth(xw, flags, color, font, x, y, chars, len) \ xtermXftDrawString(xw, flags, color, font, x, y, chars, len, False) #endif /* OPT_RENDERFONT */ #if OPT_WIDE_CHARS /* * Map characters commonly "fixed" by groff back to their ASCII equivalents. * Also map other useful equivalents. */ unsigned AsciiEquivs(unsigned ch) { switch (ch) { case 0x2010: /* groff "-" */ case 0x2011: case 0x2012: case 0x2013: case 0x2014: case 0x2015: case 0x2212: /* groff "\-" */ ch = '-'; break; case 0x2018: /* groff "`" */ ch = '`'; break; case 0x2019: /* groff ' */ ch = '\''; break; case 0x201C: /* groff lq */ case 0x201D: /* groff rq */ ch = '"'; break; case 0x2329: /* groff ".URL" */ ch = '<'; break; case 0x232a: /* groff ".URL" */ ch = '>'; break; default: if (ch >= 0xff01 && ch <= 0xff5e) { /* "Fullwidth" codes (actually double-width) */ ch -= 0xff00; ch += ANSI_SPA; break; } } return ch; } /* * Actually this should be called "groff_workaround()" - for the places where * groff stomps on compatibility. Still, if enough people get used to it, * this might someday become a quasi-standard. */ static int ucs_workaround(XtermWidget xw, unsigned ch, unsigned flags, GC gc, int x, int y, int chrset, int on_wide) { TScreen *screen = &(xw->screen); int fixed = False; if (screen->wide_chars && screen->utf8_mode && ch > 256) { IChar eqv = (IChar) AsciiEquivs(ch); if (eqv != (IChar) ch) { int width = my_wcwidth((int) ch); do { drawXtermText(xw, flags, gc, x, y, chrset, &eqv, 1, on_wide); x += FontWidth(screen); eqv = '?'; } while (width-- > 1); fixed = True; } else if (ch == HIDDEN_CHAR) { fixed = True; } } return fixed; } #endif /* * Use this when the characters will not fill the cell area properly. Fill the * area where we'll write the characters, otherwise we'll get gaps between * them, e.g., in the original background color. * * The cursor is a special case, because the XFillRectangle call only uses the * foreground, while we've set the cursor color in the background. So we need * a special GC for that. */ static void xtermFillCells(XtermWidget xw, unsigned flags, GC gc, int x, int y, Cardinal len) { TScreen *screen = &(xw->screen); VTwin *currentWin = WhichVWin(screen); if (!(flags & NOBACKGROUND)) { CgsEnum srcId = getCgsId(xw, currentWin, gc); CgsEnum dstId = gcMAX; Pixel fg = getCgsFore(xw, currentWin, gc); Pixel bg = getCgsBack(xw, currentWin, gc); switch (srcId) { case gcVTcursNormal: case gcVTcursReverse: dstId = gcVTcursOutline; break; case gcVTcursFilled: case gcVTcursOutline: /* FIXME */ break; case gcNorm: dstId = gcNormReverse; break; case gcNormReverse: dstId = gcNorm; break; case gcBold: dstId = gcBoldReverse; break; case gcBoldReverse: dstId = gcBold; break; #if OPT_BOX_CHARS case gcLine: case gcDots: /* FIXME */ break; #endif #if OPT_DEC_CHRSET case gcCNorm: case gcCBold: /* FIXME */ break; #endif #if OPT_WIDE_CHARS case gcWide: dstId = gcWideReverse; break; case gcWBold: dstId = gcBoldReverse; break; case gcWideReverse: case gcWBoldReverse: /* FIXME */ break; #endif #if OPT_TEK4014 case gcTKcurs: /* FIXME */ break; #endif case gcMAX: break; } if (dstId != gcMAX) { setCgsFore(xw, currentWin, dstId, bg); setCgsBack(xw, currentWin, dstId, fg); XFillRectangle(screen->display, VWindow(screen), getCgsGC(xw, currentWin, dstId), x, y, len * (Cardinal) FontWidth(screen), (unsigned) FontHeight(screen)); } } } #if OPT_TRACE static void xtermSetClipRectangles(Display * dpy, GC gc, int x, int y, XRectangle * rp, Cardinal nr, int order) { #if 0 TScreen *screen = &(term->screen); Drawable draw = VWindow(screen); XSetClipMask(dpy, gc, None); XDrawRectangle(screen->display, draw, gc, x + rp->x - 1, y + rp->y - 1, rp->width, rp->height); #endif XSetClipRectangles(dpy, gc, x, y, rp, (int) nr, order); TRACE(("clipping @(%3d,%3d) (%3d,%3d)..(%3d,%3d)\n", y, x, rp->y, rp->x, rp->height, rp->width)); } #else #define xtermSetClipRectangles(dpy, gc, x, y, rp, nr, order) \ XSetClipRectangles(dpy, gc, x, y, rp, (int) nr, order) #endif #if OPT_CLIP_BOLD /* * This special case is a couple of percent slower, but avoids a lot of pixel * trash in rxcurses' hanoi.cmd demo (e.g., 10x20 font). */ #define beginClipping(screen,gc,pwidth,plength) \ if (screen->use_clipping && (pwidth > 2)) { \ XRectangle clip; \ int clip_x = x; \ int clip_y = y - FontHeight(screen) + FontDescent(screen); \ clip.x = 0; \ clip.y = 0; \ clip.height = (unsigned short) FontHeight(screen); \ clip.width = (unsigned short) (pwidth * plength); \ xtermSetClipRectangles(screen->display, gc, \ clip_x, clip_y, \ &clip, 1, Unsorted); \ } #define endClipping(screen,gc) \ XSetClipMask(screen->display, gc, None) #else #define beginClipping(screen,gc,pwidth,plength) /* nothing */ #define endClipping(screen,gc) /* nothing */ #endif /* OPT_CLIP_BOLD */ #if OPT_CLIP_BOLD && OPT_RENDERFONT && defined(HAVE_XFTDRAWSETCLIP) && defined(HAVE_XFTDRAWSETCLIPRECTANGLES) #define beginXftClipping(screen,px,py,plength) \ if (screen->use_clipping && (FontWidth(screen) > 2)) { \ XRectangle clip; \ int clip_x = px; \ int clip_y = py - FontHeight(screen) + FontDescent(screen); \ clip.x = 0; \ clip.y = 0; \ clip.height = (unsigned short) (FontHeight(screen)); \ clip.width = (unsigned short) (FontWidth(screen) * plength); \ XftDrawSetClipRectangles (screen->renderDraw, \ clip_x, clip_y, \ &clip, 1); \ } #define endXftClipping(screen) \ XftDrawSetClip (screen->renderDraw, 0) #else #define beginXftClipping(screen,px,py,plength) /* nothing */ #define endXftClipping(screen) /* nothing */ #endif /* OPT_CLIP_BOLD */ #if OPT_RENDERFONT static int drawClippedXftString(XtermWidget xw, unsigned flags, XftFont * font, XftColor * fg_color, int x, int y, IChar * text, Cardinal len) { int ncells = xtermXftWidth(xw, flags, fg_color, font, x, y, text, len); TScreen *screen = &(xw->screen); beginXftClipping(screen, x, y, ncells); xtermXftDrawString(xw, flags, fg_color, font, x, y, text, len, True); endXftClipping(screen); return ncells; } #endif #ifndef NO_ACTIVE_ICON #define WhichVFontData(screen,name) \ (IsIcon(screen) ? &((screen)->fnt_icon) \ : &((screen)->name)) #else #define WhichVFontData(screen,name) \ (&((screen)->name)) #endif /* * Draws text with the specified combination of bold/underline. The return * value is the updated x position. */ int drawXtermText(XtermWidget xw, unsigned flags, GC gc, int x, int y, int chrset, IChar * text, Cardinal len, int on_wide) { TScreen *screen = &(xw->screen); Cardinal real_length = len; Cardinal underline_len = 0; /* Intended width of the font to draw (as opposed to the actual width of the X font, and the width of the default font) */ int font_width = ((flags & DOUBLEWFONT) ? 2 : 1) * screen->fnt_wide; Bool did_ul = False; #if OPT_WIDE_CHARS if (text == 0) return 0; #endif #if OPT_DEC_CHRSET if (CSET_DOUBLE(chrset)) { /* We could try drawing double-size characters in the icon, but * given that the icon font is usually nil or nil2, there * doesn't seem to be much point. */ int inx = 0; GC gc2 = ((!IsIcon(screen) && screen->font_doublesize) ? xterm_DoubleGC(xw, (unsigned) chrset, flags, gc, &inx) : 0); TRACE(("DRAWTEXT%c[%4d,%4d] (%d)%3d:%s\n", screen->cursor_state == OFF ? ' ' : '*', y, x, chrset, len, visibleIChars(text, len))); if (gc2 != 0) { /* draw actual double-sized characters */ XFontStruct *fs = screen->double_fonts[inx].fs; #if OPT_RENDERFONT if (!xw->misc.render_font || IsIconWin(screen, WhichVWin(screen))) #endif { XRectangle rect, *rp = ▭ Cardinal nr = 1; font_width *= 2; flags |= DOUBLEWFONT; rect.x = 0; rect.y = 0; rect.width = (unsigned short) ((int) len * font_width); rect.height = (unsigned short) (FontHeight(screen)); TRACE(("drawing %s\n", visibleChrsetName((unsigned) chrset))); switch (chrset) { case CSET_DHL_TOP: rect.y = (short) -(fs->ascent / 2); y -= rect.y; flags |= DOUBLEHFONT; break; case CSET_DHL_BOT: rect.y = (short) (rect.height - (fs->ascent / 2)); y -= rect.y; flags |= DOUBLEHFONT; break; default: nr = 0; break; } if (nr) { xtermSetClipRectangles(screen->display, gc2, x, y, rp, nr, YXBanded); } else { XSetClipMask(screen->display, gc2, None); } } /* Call ourselves recursively with the new gc */ /* * If we're trying to use proportional font, or if the * font server didn't give us what we asked for wrt * width, position each character independently. */ if (screen->fnt_prop || (fs->min_bounds.width != fs->max_bounds.width) || (fs->min_bounds.width != 2 * FontWidth(screen))) { /* It is hard to fall-through to the main branch: in a lot of places the check for the cached font info is for normal/bold fonts only. */ while (len--) { x = drawXtermText(xw, flags, gc2, x, y, 0, text++, 1, on_wide); x += FontWidth(screen); } } else { x = drawXtermText(xw, flags, gc2, x, y, 0, text, len, on_wide); x += (int) len *FontWidth(screen); } TRACE(("drawtext [%4d,%4d]\n", y, x)); } else { /* simulate double-sized characters */ unsigned need = 2 * len; IChar *temp = TypeMallocN(IChar, need); unsigned n = 0; while (len--) { temp[n++] = *text++; temp[n++] = ' '; } x = drawXtermText(xw, flags, gc, x, y, 0, temp, n, on_wide); free(temp); } return x; } #endif #if OPT_RENDERFONT if (UsingRenderFont(xw)) { VTwin *currentWin = WhichVWin(screen); Display *dpy = screen->display; XftFont *font; XGCValues values; int fontnum = screen->menu_font_number; int ncells; if (!screen->renderDraw) { int scr; Drawable draw = VWindow(screen); Visual *visual; scr = DefaultScreen(dpy); visual = DefaultVisual(dpy, scr); screen->renderDraw = XftDrawCreate(dpy, draw, visual, DefaultColormap(dpy, scr)); } #if OPT_ISO_COLORS if ((flags & UNDERLINE) && screen->italicULMode && XFT_FONT(renderFontItal[fontnum])) { font = XFT_FONT(renderFontItal[fontnum]); did_ul = True; } else #endif if ((flags & BOLDATTR(screen)) && XFT_FONT(renderFontBold[fontnum])) { font = XFT_FONT(renderFontBold[fontnum]); } else { font = XFT_FONT(renderFontNorm[fontnum]); } values.foreground = getCgsFore(xw, currentWin, gc); values.background = getCgsBack(xw, currentWin, gc); if (!(flags & NOBACKGROUND)) { XftColor *bg_color = getXftColor(xw, values.background); ncells = xtermXftWidth(xw, flags, bg_color, font, x, y, text, len); XftDrawRect(screen->renderDraw, bg_color, x, y, (unsigned) (ncells * FontWidth(screen)), (unsigned) FontHeight(screen)); } y += font->ascent; #if OPT_BOX_CHARS { /* adding code to substitute simulated line-drawing characters */ int last, first = 0; Dimension old_wide, old_high = 0; int curX = x; for (last = 0; last < (int) len; last++) { Boolean replace = False; Boolean missing = False; unsigned ch = (unsigned) text[last]; int nc; #if OPT_WIDE_CHARS if (xtermIsDecGraphic(ch)) { /* * Xft generally does not have the line-drawing characters * in cells 1-31. Check for this, and attempt to fill in * from real line-drawing character in the font at the * Unicode position. Failing that, use our own * box-characters. */ if (xtermXftMissing(xw, font, ch)) { if (screen->force_box_chars || xtermXftMissing(xw, font, dec2ucs(ch))) { missing = 1; } else { ch = dec2ucs(ch); replace = True; } } } else if (ch > 256) { /* * If we're reading UTF-8 from the client, we may have a * line-drawing character. Translate it back to our * box-code if Xft tells us that the glyph is missing. */ if_OPT_WIDE_CHARS(screen, { unsigned part = ucs2dec(ch); if (xtermIsDecGraphic(part) && (screen->force_box_chars || xtermXftMissing(xw, font, ch))) { ch = part; missing = True; } }); } #else if (xtermIsDecGraphic(ch)) { /* * Xft generally does not have the line-drawing characters * in cells 1-31. Check for this, and attempt to fill in * from real line-drawing character in the font at the * Unicode position. Failing that, use our own * box-characters. */ if (xtermXftMissing(xw, font, ch)) { missing = 1; } } #endif /* * If we now have one of our box-codes, draw it directly. */ if (missing || replace) { /* line drawing character time */ if (last > first) { nc = drawClippedXftString(xw, flags, font, getXftColor(xw, values.foreground), curX, y, text + first, (Cardinal) (last - first)); curX += nc * FontWidth(screen); underline_len += (Cardinal) nc; } if (missing) { old_wide = screen->fnt_wide; old_high = screen->fnt_high; screen->fnt_wide = (Dimension) FontWidth(screen); screen->fnt_high = (Dimension) FontHeight(screen); xtermDrawBoxChar(xw, ch, flags, gc, curX, y - FontAscent(screen), 1); curX += FontWidth(screen); underline_len += 1; screen->fnt_wide = old_wide; screen->fnt_high = old_high; } else { IChar ch2 = (IChar) ch; nc = drawClippedXftString(xw, flags, font, getXftColor(xw, values.foreground), curX, y, &ch2, 1); curX += nc * FontWidth(screen); underline_len += (Cardinal) nc; } first = last + 1; } } if (last > first) { underline_len += (Cardinal) drawClippedXftString(xw, flags, font, getXftColor(xw, values.foreground), curX, y, text + first, (Cardinal) (last - first)); } } #else { underline_len += (Cardinal) drawClippedXftString(xw, flags, font, getXftColor(xw, values.foreground), x, y, text, len); } #endif /* OPT_BOX_CHARS */ if ((flags & UNDERLINE) && screen->underline && !did_ul) { if (FontDescent(screen) > 1) y++; XDrawLine(screen->display, VWindow(screen), gc, x, y, x + (int) underline_len * FontWidth(screen) - 1, y); } return x + (int) len *FontWidth(screen); } #endif /* OPT_RENDERFONT */ /* * If we're asked to display a proportional font, do this with a fixed * pitch. Yes, it's ugly. But we cannot distinguish the use of xterm * as a dumb terminal vs its use as in fullscreen programs such as vi. * Hint: do not try to use a proportional font in the icon. */ if (!IsIcon(screen) && !(flags & CHARBYCHAR) && screen->fnt_prop) { int adj, width; XTermFonts *font = ((flags & BOLDATTR(screen)) ? WhichVFontData(screen, fnts[fBold]) : WhichVFontData(screen, fnts[fNorm])); xtermFillCells(xw, flags, gc, x, y, len); while (len--) { #if OPT_BOX_CHARS if (IsXtermMissingChar(screen, *text, font)) { width = 1; if_OPT_WIDE_CHARS(screen, { width = my_wcwidth((wchar_t) (*text)) * FontWidth(screen); }); adj = 0; } else #endif { if_WIDE_OR_NARROW(screen, { XChar2b temp[1]; temp[0].byte2 = LO_BYTE(*text); temp[0].byte1 = HI_BYTE(*text); width = XTextWidth16(font->fs, temp, 1); } , { char temp[1]; temp[0] = (char) LO_BYTE(*text); width = XTextWidth(font->fs, temp, 1); }); adj = (FontWidth(screen) - width) / 2; } x = drawXtermText(xw, flags | NOBACKGROUND | CHARBYCHAR, gc, x + adj, y, chrset, text++, 1, on_wide) - adj; } return x; } #if OPT_BOX_CHARS /* If the font is incomplete, draw some substitutions */ if (!IsIcon(screen) && !(flags & NOTRANSLATION) && (!screen->fnt_boxes || screen->force_box_chars)) { /* Fill in missing box-characters. Find regions without missing characters, and draw them calling ourselves recursively. Draw missing characters via xtermDrawBoxChar(). */ XTermFonts *font = ((flags & BOLDATTR(screen)) ? WhichVFontData(screen, fnts[fBold]) : WhichVFontData(screen, fnts[fNorm])); int last, first = 0; Bool drewBoxes = False; for (last = 0; last < (int) len; last++) { unsigned ch = (unsigned) text[last]; Bool isMissing; int ch_width; #if OPT_WIDE_CHARS if (ch == HIDDEN_CHAR) { if (last > first) { x = drawXtermText(xw, flags | NOTRANSLATION, gc, x, y, chrset, text + first, (unsigned) (last - first), on_wide); } first = last + 1; drewBoxes = True; continue; } ch_width = my_wcwidth((int) ch); isMissing = IsXtermMissingChar(screen, ch, ((on_wide || ch_width > 1) && okFont(NormalWFont(screen))) ? WhichVFontData(screen, fnts[fWide]) : font); #else isMissing = IsXtermMissingChar(screen, ch, font); ch_width = 1; #endif /* * If the character is not missing, but we're in wide-character * mode and the character happens to be a wide-character that * corresponds to the line-drawing set, allow the forceBoxChars * resource (or menu entry) to force it to display using our * tables. */ if_OPT_WIDE_CHARS(screen, { if (!isMissing && ch > 255 && ucs2dec(ch) < 32 && xw->screen.force_box_chars) { ch = ucs2dec(ch); isMissing = True; } }); if (isMissing) { if (last > first) { x = drawXtermText(xw, flags | NOTRANSLATION, gc, x, y, chrset, text + first, (unsigned) (last - first), on_wide); } #if OPT_WIDE_CHARS if (ucs_workaround(xw, ch, flags, gc, x, y, chrset, on_wide)) { /* * if true, we drew at least one cell whether or not it is * printable */ if (ch_width <= 0) ch_width = 1; } else #endif { if (ch_width <= 0) ch_width = 1; xtermDrawBoxChar(xw, ch, flags, gc, x, y, ch_width); } x += (ch_width * FontWidth(screen)); first = last + 1; drewBoxes = True; } } if (last <= first) { return x; } text += first; len = (Cardinal) (last - first); flags |= NOTRANSLATION; if (drewBoxes) { return drawXtermText(xw, flags, gc, x, y, chrset, text, len, on_wide); } } #endif /* OPT_BOX_CHARS */ /* * Behave as if the font has (maybe Unicode-replacements for) drawing * characters in the range 1-31 (either we were not asked to ignore them, * or the caller made sure that there is none). */ TRACE(("drawtext%c[%4d,%4d] (%d) %d:%s\n", screen->cursor_state == OFF ? ' ' : '*', y, x, chrset, len, visibleIChars(text, len))); y += FontAscent(screen); #if OPT_WIDE_CHARS if (screen->wide_chars || screen->unicode_font) { XChar2b *buffer; Bool needWide = False; int ascent_adjust = 0; int src, dst; BumpTypedBuffer(XChar2b, len); buffer = BfBuf(XChar2b); for (src = dst = 0; src < (int) len; src++) { IChar ch = text[src]; if (ch == HIDDEN_CHAR) continue; if (!needWide && !IsIcon(screen) && ((on_wide || my_wcwidth((int) ch) > 1) && okFont(NormalWFont(screen)))) { needWide = True; } /* * bitmap-fonts are limited to 16-bits. */ #if OPT_WIDER_ICHAR if (ch > 0xffff) { ch = UCS_REPL; } #endif buffer[dst].byte2 = LO_BYTE(ch); buffer[dst].byte1 = HI_BYTE(ch); #if OPT_MINI_LUIT #define UCS2SBUF(value) buffer[dst].byte2 = LO_BYTE(value);\ buffer[dst].byte1 = HI_BYTE(value) #define Map2Sbuf(from,to) (text[src] == from) { UCS2SBUF(to); } if (screen->latin9_mode && !screen->utf8_mode && text[src] < 256) { /* see http://www.cs.tut.fi/~jkorpela/latin9.html */ /* *INDENT-OFF* */ if Map2Sbuf(0xa4, 0x20ac) else if Map2Sbuf(0xa6, 0x0160) else if Map2Sbuf(0xa8, 0x0161) else if Map2Sbuf(0xb4, 0x017d) else if Map2Sbuf(0xb8, 0x017e) else if Map2Sbuf(0xbc, 0x0152) else if Map2Sbuf(0xbd, 0x0153) else if Map2Sbuf(0xbe, 0x0178) /* *INDENT-ON* */ } if (screen->unicode_font && (text[src] == ANSI_DEL || text[src] < ANSI_SPA)) { unsigned ni = dec2ucs((unsigned) ((text[src] == ANSI_DEL) ? 0 : text[src])); UCS2SBUF(ni); } #endif /* OPT_MINI_LUIT */ ++dst; } /* FIXME This is probably wrong. But it works. */ underline_len = len; /* Set the drawing font */ if (!(flags & (DOUBLEHFONT | DOUBLEWFONT))) { VTwin *currentWin = WhichVWin(screen); VTFontEnum fntId; CgsEnum cgsId; Pixel fg = getCgsFore(xw, currentWin, gc); Pixel bg = getCgsBack(xw, currentWin, gc); if (needWide && (okFont(NormalWFont(screen)) || okFont(BoldWFont(screen)))) { if ((flags & BOLDATTR(screen)) != 0 && okFont(BoldWFont(screen))) { fntId = fWBold; cgsId = gcWBold; } else { fntId = fWide; cgsId = gcWide; } } else if ((flags & BOLDATTR(screen)) != 0 && okFont(BoldFont(screen))) { fntId = fBold; cgsId = gcBold; } else { fntId = fNorm; cgsId = gcNorm; } setCgsFore(xw, currentWin, cgsId, fg); setCgsBack(xw, currentWin, cgsId, bg); gc = getCgsGC(xw, currentWin, cgsId); if (fntId != fNorm) { XFontStruct *thisFp = WhichVFont(screen, fnts[fntId].fs); ascent_adjust = (thisFp->ascent - NormalFont(screen)->ascent); if (thisFp->max_bounds.width == NormalFont(screen)->max_bounds.width * 2) { underline_len = real_length = (Cardinal) (dst * 2); } else if (cgsId == gcWide || cgsId == gcWBold) { underline_len = real_length = (Cardinal) (dst * 2); xtermFillCells(xw, flags, gc, x, y - thisFp->ascent, real_length); } } } if (flags & NOBACKGROUND) { XDrawString16(screen->display, VWindow(screen), gc, x, y + ascent_adjust, buffer, dst); } else { XDrawImageString16(screen->display, VWindow(screen), gc, x, y + ascent_adjust, buffer, dst); } if ((flags & BOLDATTR(screen)) && screen->enbolden) { beginClipping(screen, gc, (Cardinal) font_width, len); XDrawString16(screen->display, VWindow(screen), gc, x + 1, y + ascent_adjust, buffer, dst); endClipping(screen, gc); } } else #endif /* OPT_WIDE_CHARS */ { int length = (int) len; /* X should have used unsigned */ #if OPT_WIDE_CHARS char *buffer; int dst; BumpTypedBuffer(char, len); buffer = BfBuf(char); for (dst = 0; dst < length; ++dst) buffer[dst] = (char) LO_BYTE(text[dst]); #else char *buffer = (char *) text; #endif if (flags & NOBACKGROUND) { XDrawString(screen->display, VWindow(screen), gc, x, y, buffer, length); } else { XDrawImageString(screen->display, VWindow(screen), gc, x, y, buffer, length); } underline_len = (Cardinal) length; if ((flags & BOLDATTR(screen)) && screen->enbolden) { beginClipping(screen, gc, font_width, length); XDrawString(screen->display, VWindow(screen), gc, x + 1, y, buffer, length); endClipping(screen, gc); } } if ((flags & UNDERLINE) && screen->underline && !did_ul) { if (FontDescent(screen) > 1) y++; XDrawLine(screen->display, VWindow(screen), gc, x, y, (x + (int) underline_len * font_width - 1), y); } return x + (int) real_length *FontWidth(screen); } #if OPT_WIDE_CHARS /* * Allocate buffer - workaround for wide-character interfaces. */ void allocXtermChars(ScrnPtr * buffer, Cardinal length) { if (*buffer == 0) { *buffer = (ScrnPtr) XtMalloc(length); } else { *buffer = (ScrnPtr) XtRealloc((char *) *buffer, length); } } #endif /* set up size hints for window manager; min 1 char by 1 char */ void xtermSizeHints(XtermWidget xw, int scrollbarWidth) { TScreen *screen = &xw->screen; TRACE(("xtermSizeHints\n")); TRACE((" border %d\n", xw->core.border_width)); TRACE((" scrollbar %d\n", scrollbarWidth)); xw->hints.base_width = 2 * screen->border + scrollbarWidth; xw->hints.base_height = 2 * screen->border; #if OPT_TOOLBAR TRACE((" toolbar %d\n", ToolbarHeight(xw))); xw->hints.base_height += ToolbarHeight(xw); xw->hints.base_height += BorderWidth(xw) * 2; xw->hints.base_width += BorderWidth(xw) * 2; #endif xw->hints.width_inc = FontWidth(screen); xw->hints.height_inc = FontHeight(screen); xw->hints.min_width = xw->hints.base_width + xw->hints.width_inc; xw->hints.min_height = xw->hints.base_height + xw->hints.height_inc; xw->hints.width = MaxCols(screen) * FontWidth(screen) + xw->hints.min_width; xw->hints.height = MaxRows(screen) * FontHeight(screen) + xw->hints.min_height; xw->hints.flags |= (PSize | PBaseSize | PMinSize | PResizeInc); TRACE_HINTS(&(xw->hints)); } void getXtermSizeHints(XtermWidget xw) { TScreen *screen = &xw->screen; long supp; if (!XGetWMNormalHints(screen->display, XtWindow(SHELL_OF(xw)), &xw->hints, &supp)) memset(&xw->hints, 0, sizeof(xw->hints)); TRACE_HINTS(&(xw->hints)); } /* * Returns a GC, selected according to the font (reverse/bold/normal) that is * required for the current position (implied). The GC is updated with the * current screen foreground and background colors. */ GC updatedXtermGC(XtermWidget xw, unsigned flags, CellColor fg_bg, Bool hilite) { TScreen *screen = &(xw->screen); VTwin *win = WhichVWin(screen); CgsEnum cgsId = gcMAX; unsigned my_fg = extract_fg(xw, fg_bg, flags); unsigned my_bg = extract_bg(xw, fg_bg, flags); Pixel fg_pix = getXtermForeground(xw, flags, my_fg); Pixel bg_pix = getXtermBackground(xw, flags, my_bg); Pixel xx_pix; #if OPT_HIGHLIGHT_COLOR Pixel selbg_pix = T_COLOR(screen, HIGHLIGHT_BG); Pixel selfg_pix = T_COLOR(screen, HIGHLIGHT_FG); Boolean always = screen->hilite_color; Boolean use_selbg = (Boolean) (always || isNotForeground(xw, fg_pix, bg_pix, selbg_pix)); Boolean use_selfg = (Boolean) (always && isNotBackground(xw, fg_pix, bg_pix, selfg_pix)); #endif (void) fg_bg; (void) my_bg; (void) my_fg; checkVeryBoldColors(flags, my_fg); if (ReverseOrHilite(screen, flags, hilite)) { if (flags & BOLDATTR(screen)) { cgsId = gcBoldReverse; } else { cgsId = gcNormReverse; } #if OPT_HIGHLIGHT_COLOR if (!screen->hilite_color) { if (selbg_pix != T_COLOR(screen, TEXT_FG) && selbg_pix != fg_pix && selbg_pix != bg_pix && selbg_pix != xw->dft_foreground) { bg_pix = fg_pix; fg_pix = selbg_pix; } } #endif EXCHANGE(fg_pix, bg_pix, xx_pix); #if OPT_HIGHLIGHT_COLOR if (screen->hilite_color) { if (screen->hilite_reverse) { if (use_selbg) { if (use_selfg) bg_pix = fg_pix; else fg_pix = bg_pix; } if (use_selbg) bg_pix = selbg_pix; if (use_selfg) fg_pix = selfg_pix; } } #endif } else { if (flags & BOLDATTR(screen)) { cgsId = gcBold; } else { cgsId = gcNorm; } } #if OPT_HIGHLIGHT_COLOR if (!screen->hilite_color || !screen->hilite_reverse) { if (hilite && !screen->hilite_reverse) { if (use_selbg) bg_pix = selbg_pix; if (use_selfg) fg_pix = selfg_pix; } } #endif #if OPT_BLINK_TEXT if ((screen->blink_state == ON) && (!screen->blink_as_bold) && (flags & BLINK)) { fg_pix = bg_pix; } #endif setCgsFore(xw, win, cgsId, fg_pix); setCgsBack(xw, win, cgsId, bg_pix); return getCgsGC(xw, win, cgsId); } /* * Resets the foreground/background of the GC returned by 'updatedXtermGC()' * to the values that would be set in SGR_Foreground and SGR_Background. This * duplicates some logic, but only modifies 1/4 as many GC's. */ void resetXtermGC(XtermWidget xw, unsigned flags, Bool hilite) { TScreen *screen = &(xw->screen); VTwin *win = WhichVWin(screen); CgsEnum cgsId = gcMAX; Pixel fg_pix = getXtermForeground(xw, flags, xw->cur_foreground); Pixel bg_pix = getXtermBackground(xw, flags, xw->cur_background); checkVeryBoldColors(flags, xw->cur_foreground); if (ReverseOrHilite(screen, flags, hilite)) { if (flags & BOLDATTR(screen)) { cgsId = gcBoldReverse; } else { cgsId = gcNormReverse; } setCgsFore(xw, win, cgsId, bg_pix); setCgsBack(xw, win, cgsId, fg_pix); } else { if (flags & BOLDATTR(screen)) { cgsId = gcBold; } else { cgsId = gcNorm; } setCgsFore(xw, win, cgsId, fg_pix); setCgsBack(xw, win, cgsId, bg_pix); } } #if OPT_ISO_COLORS /* * Extract the foreground-color index from a one-byte color pair. If we've got * BOLD or UNDERLINE color-mode active, those will be used. */ unsigned extract_fg(XtermWidget xw, CellColor color, unsigned flags) { unsigned fg = ExtractForeground(color); if (xw->screen.colorAttrMode || (fg == ExtractBackground(color))) { if (xw->screen.colorULMode && (flags & UNDERLINE)) fg = COLOR_UL; if (xw->screen.colorBDMode && (flags & BOLD)) fg = COLOR_BD; if (xw->screen.colorBLMode && (flags & BLINK)) fg = COLOR_BL; } return fg; } /* * Extract the background-color index from a one-byte color pair. * If we've got INVERSE color-mode active, that will be used. */ unsigned extract_bg(XtermWidget xw, CellColor color, unsigned flags) { unsigned bg = ExtractBackground(color); if (xw->screen.colorAttrMode || (bg == ExtractForeground(color))) { if (xw->screen.colorRVMode && (flags & INVERSE)) bg = COLOR_RV; } return bg; } /* * Combine the current foreground and background into a single 8-bit number. * Note that we're storing the SGR foreground, since cur_foreground may be set * to COLOR_UL, COLOR_BD or COLOR_BL, which would make the code larger than 8 * bits. * * This assumes that fg/bg are equal when we override with one of the special * attribute colors. */ CellColor makeColorPair(int fg, int bg) { unsigned my_bg = (bg >= 0) && (bg < NUM_ANSI_COLORS) ? (unsigned) bg : 0; unsigned my_fg = (fg >= 0) && (fg < NUM_ANSI_COLORS) ? (unsigned) fg : my_bg; return (CellColor) (my_fg | (my_bg << COLOR_BITS)); } /* * Using the "current" SGR background, clear a rectangle. */ void ClearCurBackground(XtermWidget xw, int top, int left, unsigned height, unsigned width) { TScreen *screen = &(xw->screen); TRACE(("ClearCurBackground(%d,%d,%d,%d) %d\n", top, left, height, width, xw->cur_background)); if (VWindow(screen)) { set_background(xw, xw->cur_background); XClearArea(screen->display, VWindow(screen), left, top, width, height, False); set_background(xw, -1); } } #endif /* OPT_ISO_COLORS */ /* * Returns a single base character for the given cell. */ unsigned getXtermCell(TScreen * screen, int row, int col) { LineData *ld = getLineData(screen, row); return ld->charData[col]; } /* * Sets a single base character for the given cell. */ void putXtermCell(TScreen * screen, int row, int col, int ch) { LineData *ld = getLineData(screen, row); ld->charData[col] = (CharData) ch; if_OPT_WIDE_CHARS(screen, { size_t off; for_each_combData(off, ld) { ld->combData[off][col] = 0; } }); } #if OPT_WIDE_CHARS /* * Add a combining character for the given cell */ void addXtermCombining(TScreen * screen, int row, int col, unsigned ch) { if (ch != 0) { LineData *ld = getLineData(screen, row); size_t off; TRACE(("addXtermCombining %d,%d %#x (%d)\n", row, col, ch, my_wcwidth((wchar_t) ch))); for_each_combData(off, ld) { if (!ld->combData[off][col]) { ld->combData[off][col] = (CharData) ch; break; } } } } #endif #ifdef HAVE_CONFIG_H #ifdef USE_MY_MEMMOVE void * my_memmove(void *s1, void *s2, size_t n) { if (n != 0) { char *p1 = (char *) s1; char *p2 = (char *) s2; if ((p1 + n > p2) && (p2 + n > p1)) { static char *bfr; static size_t length; size_t j; if (length < n) { length = (n * 3) / 2; bfr = ((bfr != 0) ? TypeRealloc(char, length, bfr) : TypeMallocN(char, length)); if (bfr == NULL) SysError(ERROR_MMALLOC); } for (j = 0; j < n; j++) bfr[j] = p2[j]; p2 = bfr; } while (n-- != 0) p1[n] = p2[n]; } return s1; } #endif /* USE_MY_MEMMOVE */ #ifndef HAVE_STRERROR char * my_strerror(int n) { extern char *sys_errlist[]; extern int sys_nerr; if (n > 0 && n < sys_nerr) return sys_errlist[n]; return "?"; } #endif #endif void update_keyboard_type(void) { update_delete_del(); update_tcap_fkeys(); update_old_fkeys(); update_hp_fkeys(); update_sco_fkeys(); update_sun_fkeys(); update_sun_kbd(); } void set_keyboard_type(XtermWidget xw, xtermKeyboardType type, Bool set) { xtermKeyboardType save = xw->keyboard.type; TRACE(("set_keyboard_type(%s, %s) currently %s\n", visibleKeyboardType(type), BtoS(set), visibleKeyboardType(xw->keyboard.type))); if (set) { xw->keyboard.type = type; } else { xw->keyboard.type = keyboardIsDefault; } if (save != xw->keyboard.type) { update_keyboard_type(); } } void toggle_keyboard_type(XtermWidget xw, xtermKeyboardType type) { xtermKeyboardType save = xw->keyboard.type; TRACE(("toggle_keyboard_type(%s) currently %s\n", visibleKeyboardType(type), visibleKeyboardType(xw->keyboard.type))); if (xw->keyboard.type == type) { xw->keyboard.type = keyboardIsDefault; } else { xw->keyboard.type = type; } if (save != xw->keyboard.type) { update_keyboard_type(); } } void init_keyboard_type(XtermWidget xw, xtermKeyboardType type, Bool set) { static Bool wasSet = False; TRACE(("init_keyboard_type(%s, %s) currently %s\n", visibleKeyboardType(type), BtoS(set), visibleKeyboardType(xw->keyboard.type))); if (set) { if (wasSet) { fprintf(stderr, "Conflicting keyboard type option (%u/%u)\n", xw->keyboard.type, type); } xw->keyboard.type = type; wasSet = True; update_keyboard_type(); } } /* * If the keyboardType resource is set, use that, overriding the individual * boolean resources for different keyboard types. */ void decode_keyboard_type(XtermWidget xw, XTERM_RESOURCE * rp) { #define DATA(n, t, f) { n, t, XtOffsetOf(XTERM_RESOURCE, f) } #define FLAG(n) *(Boolean *)(((char *)rp) + table[n].offset) static struct { const char *name; xtermKeyboardType type; unsigned offset; } table[] = { #if OPT_HP_FUNC_KEYS DATA(NAME_HP_KT, keyboardIsHP, hpFunctionKeys), #endif #if OPT_SCO_FUNC_KEYS DATA(NAME_SCO_KT, keyboardIsSCO, scoFunctionKeys), #endif #if OPT_SUN_FUNC_KEYS DATA(NAME_SUN_KT, keyboardIsSun, sunFunctionKeys), #endif #if OPT_SUNPC_KBD DATA(NAME_VT220_KT, keyboardIsVT220, sunKeyboard), #endif #if OPT_TCAP_FKEYS DATA(NAME_TCAP_KT, keyboardIsTermcap, termcapKeys), #endif }; Cardinal n; TRACE(("decode_keyboard_type(%s)\n", rp->keyboardType)); if (!x_strcasecmp(rp->keyboardType, "unknown")) { /* * Let the individual resources comprise the keyboard-type. */ for (n = 0; n < XtNumber(table); ++n) init_keyboard_type(xw, table[n].type, FLAG(n)); } else if (!x_strcasecmp(rp->keyboardType, "default")) { /* * Set the keyboard-type to the Sun/PC type, allowing modified * function keys, etc. */ for (n = 0; n < XtNumber(table); ++n) init_keyboard_type(xw, table[n].type, False); } else { Bool found = False; /* * Choose an individual keyboard type. */ for (n = 0; n < XtNumber(table); ++n) { if (!x_strcasecmp(rp->keyboardType, table[n].name + 1)) { FLAG(n) = True; found = True; } else { FLAG(n) = False; } init_keyboard_type(xw, table[n].type, FLAG(n)); } if (!found) { fprintf(stderr, "KeyboardType resource \"%s\" not found\n", rp->keyboardType); } } #undef DATA #undef FLAG } #if OPT_WIDE_CHARS #if defined(HAVE_WCHAR_H) && defined(HAVE_WCWIDTH) /* * If xterm is running in a UTF-8 locale, it is still possible to encounter * old runtime configurations which yield incomplete or inaccurate data. */ static Bool systemWcwidthOk(int samplesize, int samplepass) { wchar_t n; int oops = 0; for (n = 21; n <= 25; ++n) { int code = (int) dec2ucs((unsigned) n); int system_code = wcwidth(code); int intern_code = mk_wcwidth(code); /* * Solaris 10 wcwidth() returns "2" for all of the line-drawing (page * 0x2500) and most of the geometric shapes (a few are excluded, just * to make it more difficult to use). Do a sanity check to avoid using * it. */ if ((system_code < 0 && intern_code >= 1) || (system_code >= 0 && intern_code != system_code)) { TRACE(("systemWcwidthOk: broken system line-drawing wcwidth\n")); oops += (samplepass + 1); break; } } for (n = 0; n < (wchar_t) samplesize; ++n) { int system_code = wcwidth(n); int intern_code = mk_wcwidth(n); /* * Since mk_wcwidth() is designed to check for nonspacing characters, * and has rough range-checks for double-width characters, it will * generally not detect cases where a code has not been assigned. * * Some experimentation with GNU libc suggests that up to 1/4 of the * codes would differ, simply because the runtime library would have a * table listing the unassigned codes, and return -1 for those. If * mk_wcwidth() has no information about a code, it returns 1. On the * other hand, if the runtime returns a positive number, the two should * agree. * * The "up to" is measured for 4k, 8k, 16k of data. With only 1k, the * number of differences was only 77. However, that is only one * system, and this is only a sanity check to avoid using broken * libraries. */ if ((system_code < 0 && intern_code >= 1) || (system_code >= 0 && intern_code != system_code)) { ++oops; } } TRACE(("systemWcwidthOk: %d/%d mismatches, allowed %d\n", oops, samplesize, samplepass)); return (oops <= samplepass); } #endif /* HAVE_WCWIDTH */ void decode_wcwidth(int mode, int samplesize, int samplepass) { switch (mode) { default: #if defined(HAVE_WCHAR_H) && defined(HAVE_WCWIDTH) if (xtermEnvUTF8() && systemWcwidthOk(samplesize, samplepass)) { my_wcwidth = wcwidth; TRACE(("using system wcwidth() function\n")); break; } /* FALLTHRU */ #else (void) samplesize; (void) samplepass; #endif case 2: my_wcwidth = &mk_wcwidth; TRACE(("using MK wcwidth() function\n")); break; case 3: case 4: my_wcwidth = &mk_wcwidth_cjk; TRACE(("using MK-CJK wcwidth() function\n")); break; } } #endif