X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fbase%2Fresizeterm.c;h=a94cfc3aaaa8512e464e13497c76c23d8fdfdee1;hp=e5b852c70d3a6c2b634b5ffafbee406b9ca269dc;hb=48310f11b209169dcbcf4a25fab48d86af8c2017;hpb=a8987e73ec254703634802b4f7ee30d3a485524d diff --git a/ncurses/base/resizeterm.c b/ncurses/base/resizeterm.c index e5b852c7..a94cfc3a 100644 --- a/ncurses/base/resizeterm.c +++ b/ncurses/base/resizeterm.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. * + * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * @@ -41,18 +41,100 @@ #include #include -MODULE_ID("$Id: resizeterm.c,v 1.15 2002/12/28 01:21:34 tom Exp $") +MODULE_ID("$Id: resizeterm.c,v 1.34 2008/06/07 13:58:40 tom Exp $") #define stolen_lines (screen_lines - SP->_lines_avail) +/* + * If we're trying to be reentrant, do not want any local statics. + */ +#if USE_REENTRANT +#define EXTRA_ARGS , CurLines, CurCols +#define EXTRA_DCLS , int CurLines, int CurCols +#else static int current_lines; static int current_cols; +#define CurLines current_lines +#define CurCols current_cols +#define EXTRA_ARGS /* nothing */ +#define EXTRA_DCLS /* nothing */ +#endif + +#ifdef TRACE +static void +show_window_sizes(const char *name) +{ + WINDOWLIST *wp; + _nc_lock_global(curses); + _tracef("%s resizing: %2d x %2d (%2d x %2d)", name, LINES, COLS, + screen_lines, screen_columns); + for (each_window(wp)) { + _tracef(" window %p is %2ld x %2ld at %2ld,%2ld", + &(wp->win), + (long) wp->win._maxy + 1, + (long) wp->win._maxx + 1, + (long) wp->win._begy, + (long) wp->win._begx); + } + _nc_unlock_global(curses); +} +#endif + +/* + * Return true if the given dimensions do not match the internal terminal + * structure's size. + */ NCURSES_EXPORT(bool) is_term_resized(int ToLines, int ToCols) { - return (ToLines != screen_lines - || ToCols != screen_columns); + T((T_CALLED("is_term_resized(%d, %d)"), ToLines, ToCols)); + returnCode(ToLines > 0 + && ToCols > 0 + && (ToLines != screen_lines + || ToCols != screen_columns)); +} + +/* + */ +static ripoff_t * +ripped_window(WINDOW *win) +{ + ripoff_t *result = 0; + ripoff_t *rop; + + if (win != 0) { + for (each_ripoff(rop)) { + if (rop->win == win && rop->line != 0) { + result = rop; + break; + } + } + } + return result; +} + +/* + * Returns the number of lines from the bottom for the beginning of a ripped + * off window. + */ +static int +ripped_bottom(WINDOW *win) +{ + int result = 0; + ripoff_t *rop; + + if (win != 0) { + for (each_ripoff(rop)) { + if (rop->line < 0) { + result -= rop->line; + if (rop->win == win) { + break; + } + } + } + } + return result; } /* @@ -66,7 +148,7 @@ child_depth(WINDOW *cmp) if (cmp != 0) { WINDOWLIST *wp; - for (wp = _nc_windows; wp != 0; wp = wp->next) { + for (each_window(wp)) { WINDOW *tst = &(wp->win); if (tst->_parent == cmp) { depth = 1 + child_depth(tst); @@ -99,41 +181,53 @@ parent_depth(WINDOW *cmp) * FIXME: must adjust position so it's within the parent! */ static int -adjust_window(WINDOW *win, int ToLines, int ToCols, int stolen) +adjust_window(WINDOW *win, int ToLines, int ToCols, int stolen EXTRA_DCLS) { int result; - int bottom = current_lines + SP->_topstolen - stolen; + int bottom = CurLines + SP->_topstolen - stolen; int myLines = win->_maxy + 1; int myCols = win->_maxx + 1; + ripoff_t *rop = ripped_window(win); - T((T_CALLED("adjust_window(%p,%d,%d) currently %dx%d at %d,%d"), + T((T_CALLED("adjust_window(%p,%d,%d)%s depth %d/%d currently %ldx%ld at %ld,%ld"), win, ToLines, ToCols, - getmaxy(win), getmaxx(win), - getbegy(win), getbegx(win))); - - if (win->_begy >= bottom) { - win->_begy += (ToLines - current_lines); + (rop != 0) ? " (rip)" : "", + parent_depth(win), + child_depth(win), + (long) getmaxy(win), (long) getmaxx(win), + (long) getbegy(win) + win->_yoffset, (long) getbegx(win))); + + if (rop != 0 && rop->line < 0) { + /* + * If it is a ripped-off window at the bottom of the screen, simply + * move it to the same relative position. + */ + win->_begy = ToLines - ripped_bottom(win) - 0 - win->_yoffset; + } else if (win->_begy >= bottom) { + /* + * If it is below the bottom of the new screen, move up by the same + * amount that the screen shrank. + */ + win->_begy += (ToLines - CurLines); } else { - if (myLines == current_lines - stolen - && ToLines != current_lines) + if (myLines == (CurLines - stolen) + && ToLines != CurLines) { myLines = ToLines - stolen; - else if (myLines == current_lines - && ToLines != current_lines) + } else if (myLines == CurLines + && ToLines != CurLines) { myLines = ToLines; + } } - if (myLines > ToLines) + if (myLines > ToLines) { myLines = ToLines; + } if (myCols > ToCols) myCols = ToCols; - if (myLines == current_lines - && ToLines != current_lines) - myLines = ToLines; - - if (myCols == current_cols - && ToCols != current_cols) + if (myCols == CurCols + && ToCols != CurCols) myCols = ToCols; result = wresize(win, myLines, myCols); @@ -145,7 +239,7 @@ adjust_window(WINDOW *win, int ToLines, int ToCols, int stolen) * children, decrease those to fit, then decrease the containing window, etc. */ static int -decrease_size(int ToLines, int ToCols, int stolen) +decrease_size(int ToLines, int ToCols, int stolen EXTRA_DCLS) { bool found; int depth = 0; @@ -157,12 +251,14 @@ decrease_size(int ToLines, int ToCols, int stolen) found = FALSE; TR(TRACE_UPDATE, ("decreasing size of windows to %dx%d, depth=%d", ToLines, ToCols, depth)); - for (wp = _nc_windows; wp != 0; wp = wp->next) { + for (each_window(wp)) { WINDOW *win = &(wp->win); if (!(win->_flags & _ISPAD)) { if (child_depth(win) == depth) { - if (adjust_window(win, ToLines, ToCols, stolen) != OK) + found = TRUE; + if (adjust_window(win, ToLines, ToCols, + stolen EXTRA_ARGS) != OK) returnCode(ERR); } } @@ -177,7 +273,7 @@ decrease_size(int ToLines, int ToCols, int stolen) * parent, increase those to fit, then increase the contained window, etc. */ static int -increase_size(int ToLines, int ToCols, int stolen) +increase_size(int ToLines, int ToCols, int stolen EXTRA_DCLS) { bool found; int depth = 0; @@ -189,12 +285,14 @@ increase_size(int ToLines, int ToCols, int stolen) found = FALSE; TR(TRACE_UPDATE, ("increasing size of windows to %dx%d, depth=%d", ToLines, ToCols, depth)); - for (wp = _nc_windows; wp != 0; wp = wp->next) { + for (each_window(wp)) { WINDOW *win = &(wp->win); if (!(win->_flags & _ISPAD)) { if (parent_depth(win) == depth) { - if (adjust_window(win, ToLines, ToCols, stolen) != OK) + found = TRUE; + if (adjust_window(win, ToLines, ToCols, + stolen EXTRA_ARGS) != OK) returnCode(ERR); } } @@ -211,32 +309,45 @@ increase_size(int ToLines, int ToCols, int stolen) NCURSES_EXPORT(int) resize_term(int ToLines, int ToCols) { - int result = OK; - int was_stolen = (screen_lines - SP->_lines_avail); + int result = OK EXTRA_ARGS; + int was_stolen; T((T_CALLED("resize_term(%d,%d) old(%d,%d)"), ToLines, ToCols, screen_lines, screen_columns)); + if (SP == 0) { + returnCode(ERR); + } + + _nc_lock_global(curses); + + was_stolen = (screen_lines - SP->_lines_avail); if (is_term_resized(ToLines, ToCols)) { - int myLines = current_lines = screen_lines; - int myCols = current_cols = screen_columns; + int myLines = CurLines = screen_lines; + int myCols = CurCols = screen_columns; +#ifdef TRACE + if (USE_TRACEF(TRACE_UPDATE)) { + show_window_sizes("before"); + _nc_unlock_global(tracef); + } +#endif if (ToLines > screen_lines) { - increase_size(myLines = ToLines, myCols, was_stolen); - current_lines = myLines; - current_cols = myCols; + increase_size(myLines = ToLines, myCols, was_stolen EXTRA_ARGS); + CurLines = myLines; + CurCols = myCols; } if (ToCols > screen_columns) { - increase_size(myLines, myCols = ToCols, was_stolen); - current_lines = myLines; - current_cols = myCols; + increase_size(myLines, myCols = ToCols, was_stolen EXTRA_ARGS); + CurLines = myLines; + CurCols = myCols; } if (ToLines < myLines || ToCols < myCols) { - decrease_size(ToLines, ToCols, was_stolen); + decrease_size(ToLines, ToCols, was_stolen EXTRA_ARGS); } screen_lines = lines = ToLines; @@ -250,14 +361,24 @@ resize_term(int ToLines, int ToCols) if (SP->newhash) { FreeAndNull(SP->newhash); } +#ifdef TRACE + if (USE_TRACEF(TRACE_UPDATE)) { + SET_LINES(ToLines - was_stolen); + SET_COLS(ToCols); + show_window_sizes("after"); + _nc_unlock_global(tracef); + } +#endif } /* * Always update LINES, to allow for call from lib_doupdate.c which * needs to have the count adjusted by the stolen (ripped off) lines. */ - LINES = ToLines - was_stolen; - COLS = ToCols; + SET_LINES(ToLines - was_stolen); + SET_COLS(ToCols); + + _nc_unlock_global(curses); returnCode(result); } @@ -273,22 +394,61 @@ resize_term(int ToLines, int ToCols) NCURSES_EXPORT(int) resizeterm(int ToLines, int ToCols) { - int result = OK; - - SP->_sig_winch = FALSE; + int result = ERR; T((T_CALLED("resizeterm(%d,%d) old(%d,%d)"), ToLines, ToCols, screen_lines, screen_columns)); - if (is_term_resized(ToLines, ToCols)) { + if (SP != 0) { + result = OK; + SP->_sig_winch = FALSE; + if (is_term_resized(ToLines, ToCols)) { #if USE_SIGWINCH - ungetch(KEY_RESIZE); /* so application can know this */ - clearok(curscr, TRUE); /* screen contents are unknown */ + ripoff_t *rop; + bool slk_visible = (SP != 0 + && SP->_slk != 0 + && !(SP->_slk->hidden)); + + if (slk_visible) { + slk_clear(); + } #endif + result = resize_term(ToLines, ToCols); + +#if USE_SIGWINCH + _nc_ungetch(SP, KEY_RESIZE); /* so application can know this */ + clearok(curscr, TRUE); /* screen contents are unknown */ + + /* ripped-off lines are a special case: if we did not lengthen + * them, we haven't moved them either. repaint them, too. + * + * for the rest - stdscr and other windows - the client has to + * decide which to repaint, since without panels, ncurses does + * not know which are really on top. + */ + for (each_ripoff(rop)) { + if (rop->win != stdscr + && rop->win != 0 + && rop->line < 0) { + + if (rop->hook != _nc_slk_initialize) { + touchwin(rop->win); + wnoutrefresh(rop->win); + } + } + } + + /* soft-keys are a special case: we _know_ how to repaint them */ + if (slk_visible) { + slk_restore(); + slk_touch(); - result = resize_term(ToLines, ToCols); + slk_refresh(); + } +#endif + } } returnCode(result);