/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2011,2014 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 *
****************************************************************************/
/****************************************************************************
- * Author: Thomas E. Dickey <dickey@clark.net> 1996,1997 *
+ * Author: Thomas E. Dickey *
+ * and: Juergen Pfeifer *
****************************************************************************/
/*
*/
#include <curses.priv.h>
-#include <term.h>
-MODULE_ID("$Id: resizeterm.c,v 1.7 1998/09/19 19:27:43 Alexander.V.Lukyanov Exp $")
+#ifndef CUR
+#define CUR SP_TERMTYPE
+#endif
+
+MODULE_ID("$Id: resizeterm.c,v 1.46 2014/03/08 20:32:59 tom Exp $")
+
+/*
+ * 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)
+{
+ SCREEN *sp;
+ WINDOWLIST *wp;
+
+ _nc_lock_global(curses);
+ for (each_screen(sp)) {
+ _tracef("%s resizing: %p: %2d x %2d (%2d x %2d)", name, (void *) sp,
+ *(ptrLines(sp)),
+ *(ptrCols(sp)),
+ screen_lines(sp), screen_columns(sp));
+ for (each_window(sp, wp)) {
+ _tracef(" window %p is %2ld x %2ld at %2ld,%2ld",
+ (void *) &(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)
+NCURSES_SP_NAME(is_term_resized) (NCURSES_SP_DCLx int ToLines, int ToCols)
+{
+ T((T_CALLED("is_term_resized(%p, %d, %d)"), (void *) SP_PARM, ToLines, ToCols));
+ returnCode(ToLines > 0
+ && ToCols > 0
+ && (ToLines != screen_lines(SP_PARM)
+ || ToCols != screen_columns(SP_PARM)));
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(bool)
+is_term_resized(int ToLines, int ToCols)
+{
+ return NCURSES_SP_NAME(is_term_resized) (CURRENT_SCREEN, ToLines, ToCols);
+}
+#endif
+
+/*
+ */
+static ripoff_t *
+ripped_window(WINDOW *win)
+{
+ ripoff_t *result = 0;
+ ripoff_t *rop;
+
+ if (win != 0) {
+#ifdef USE_SP_RIPOFF
+ SCREEN *sp = _nc_screen_of(win);
+#endif
+ 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) {
+#ifdef USE_SP_RIPOFF
+ SCREEN *sp = _nc_screen_of(win);
+#endif
+ for (each_ripoff(rop)) {
+ if (rop->line < 0) {
+ result -= rop->line;
+ if (rop->win == win) {
+ break;
+ }
+ }
+ }
+ }
+ return result;
+}
+
+/*
+ * Return the number of levels of child-windows under the current window.
+ */
+static int
+child_depth(WINDOW *cmp)
+{
+ int depth = 0;
+
+ if (cmp != 0) {
+#ifdef USE_SP_WINDOWLIST
+ SCREEN *sp = _nc_screen_of(cmp);
+#endif
+ WINDOWLIST *wp;
+
+ for (each_window(sp, wp)) {
+ WINDOW *tst = &(wp->win);
+ if (tst->_parent == cmp) {
+ depth = 1 + child_depth(tst);
+ break;
+ }
+ }
+ }
+ return depth;
+}
+
+/*
+ * Return the number of levels of parent-windows above the current window.
+ */
+static int
+parent_depth(WINDOW *cmp)
+{
+ int depth = 0;
+
+ if (cmp != 0) {
+ WINDOW *tst;
+ while ((tst = cmp->_parent) != 0) {
+ ++depth;
+ cmp = tst;
+ }
+ }
+ return depth;
+}
+
+/*
+ * FIXME: must adjust position so it's within the parent!
+ */
+static int
+adjust_window(WINDOW *win, int ToLines, int ToCols, int stolen EXTRA_DCLS)
+{
+ int result;
+ int bottom = CurLines + _nc_screen_of(win)->_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)%s depth %d/%d currently %ldx%ld at %ld,%ld"),
+ (void *) win, ToLines, ToCols,
+ (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 = (NCURSES_SIZE_T) (ToLines - ripped_bottom(win) - 0 - win->_yoffset);
+ if (rop->hook == _nc_slk_initialize)
+ _nc_format_slks(
+#if NCURSES_SP_FUNCS
+ _nc_screen_of(win),
+#endif
+ ToCols);
+ } 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 = (NCURSES_SIZE_T) (win->_begy + (ToLines - CurLines));
+ } else {
+ if (myLines == (CurLines - stolen)
+ && ToLines != CurLines) {
+ myLines = ToLines - stolen;
+ } else if (myLines == CurLines
+ && ToLines != CurLines) {
+ myLines = ToLines;
+ }
+ }
+
+ if (myLines > ToLines) {
+ myLines = ToLines;
+ }
+
+ if (myCols > ToCols)
+ myCols = ToCols;
+
+ if (myCols == CurCols
+ && ToCols != CurCols)
+ myCols = ToCols;
+
+ result = wresize(win, myLines, myCols);
+ returnCode(result);
+}
+
+/*
+ * If we're decreasing size, recursively search for windows that have no
+ * children, decrease those to fit, then decrease the containing window, etc.
+ */
+static int
+decrease_size(NCURSES_SP_DCLx int ToLines, int ToCols, int stolen EXTRA_DCLS)
+{
+ bool found;
+ int depth = 0;
+ WINDOWLIST *wp;
+
+ T((T_CALLED("decrease_size(%p, %d, %d)"), (void *) SP_PARM, ToLines, ToCols));
+
+ do {
+ found = FALSE;
+ TR(TRACE_UPDATE, ("decreasing size of windows to %dx%d, depth=%d",
+ ToLines, ToCols, depth));
+ for (each_window(SP_PARM, wp)) {
+ WINDOW *win = &(wp->win);
+
+ if (!(win->_flags & _ISPAD)) {
+ if (child_depth(win) == depth) {
+ found = TRUE;
+ if (adjust_window(win, ToLines, ToCols,
+ stolen EXTRA_ARGS) != OK)
+ returnCode(ERR);
+ }
+ }
+ }
+ ++depth;
+ } while (found);
+ returnCode(OK);
+}
+
+/*
+ * If we're increasing size, recursively search for windows that have no
+ * parent, increase those to fit, then increase the contained window, etc.
+ */
+static int
+increase_size(NCURSES_SP_DCLx int ToLines, int ToCols, int stolen EXTRA_DCLS)
+{
+ bool found;
+ int depth = 0;
+ WINDOWLIST *wp;
+
+ T((T_CALLED("increase_size(%p, %d, %d)"), (void *) SP_PARM, ToLines, ToCols));
+
+ do {
+ found = FALSE;
+ TR(TRACE_UPDATE, ("increasing size of windows to %dx%d, depth=%d",
+ ToLines, ToCols, depth));
+ for (each_window(SP_PARM, wp)) {
+ WINDOW *win = &(wp->win);
+
+ if (!(win->_flags & _ISPAD)) {
+ if (parent_depth(win) == depth) {
+ found = TRUE;
+ if (adjust_window(win, ToLines, ToCols,
+ stolen EXTRA_ARGS) != OK)
+ returnCode(ERR);
+ }
+ }
+ }
+ ++depth;
+ } while (found);
+ returnCode(OK);
+}
+
+/*
+ * This function reallocates NCURSES window structures, with no side-effects
+ * such as ungetch().
+ */
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(resize_term) (NCURSES_SP_DCLx int ToLines, int ToCols)
+{
+ int result = OK EXTRA_ARGS;
+ int was_stolen;
+
+ T((T_CALLED("resize_term(%p,%d,%d) old(%d,%d)"),
+ (void *) SP_PARM, ToLines, ToCols,
+ (SP_PARM == 0) ? -1 : screen_lines(SP_PARM),
+ (SP_PARM == 0) ? -1 : screen_columns(SP_PARM)));
+
+ if (SP_PARM == 0) {
+ returnCode(ERR);
+ }
+
+ _nc_nonsp_lock_global(curses);
+
+ was_stolen = (screen_lines(SP_PARM) - SP_PARM->_lines_avail);
+ if (NCURSES_SP_NAME(is_term_resized) (NCURSES_SP_ARGx ToLines, ToCols)) {
+ int myLines = CurLines = screen_lines(SP_PARM);
+ int myCols = CurCols = screen_columns(SP_PARM);
+
+#ifdef TRACE
+ if (USE_TRACEF(TRACE_UPDATE)) {
+ show_window_sizes("before");
+ _nc_unlock_global(tracef);
+ }
+#endif
+ if (ToLines > screen_lines(SP_PARM)) {
+ result = increase_size(NCURSES_SP_ARGx
+ myLines = ToLines,
+ myCols,
+ was_stolen EXTRA_ARGS);
+ CurLines = myLines;
+ CurCols = myCols;
+ }
+
+ if ((result == OK)
+ && (ToCols > screen_columns(SP_PARM))) {
+ result = increase_size(NCURSES_SP_ARGx
+ myLines,
+ myCols = ToCols,
+ was_stolen EXTRA_ARGS);
+ CurLines = myLines;
+ CurCols = myCols;
+ }
+
+ if ((result == OK)
+ && (ToLines < myLines ||
+ ToCols < myCols)) {
+ result = decrease_size(NCURSES_SP_ARGx
+ ToLines,
+ ToCols,
+ was_stolen EXTRA_ARGS);
+ }
+
+ if (result == OK) {
+ screen_lines(SP_PARM) = (NCURSES_SIZE_T) ToLines;
+ screen_columns(SP_PARM) = (NCURSES_SIZE_T) ToCols;
+
+#ifdef USE_TERM_DRIVER
+ CallDriver_2(SP_PARM, td_setsize, ToLines, ToCols);
+#else
+ lines = (NCURSES_SIZE_T) ToLines;
+ columns = (NCURSES_SIZE_T) ToCols;
+#endif
+
+ SP_PARM->_lines_avail = (NCURSES_SIZE_T) (ToLines - was_stolen);
+
+ if (SP_PARM->oldhash) {
+ FreeAndNull(SP_PARM->oldhash);
+ }
+ if (SP_PARM->newhash) {
+ FreeAndNull(SP_PARM->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
+ }
+ }
+
+ if (result == OK) {
+ /*
+ * Always update LINES, to allow for call from lib_doupdate.c which
+ * needs to have the count adjusted by the stolen (ripped off) lines.
+ */
+ SET_LINES(ToLines - was_stolen);
+ SET_COLS(ToCols);
+ }
+
+ _nc_nonsp_unlock_global(curses);
+
+ returnCode(result);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+resize_term(int ToLines, int ToCols)
+{
+ int res = ERR;
+ _nc_sp_lock_global(curses);
+ res = NCURSES_SP_NAME(resize_term) (CURRENT_SCREEN, ToLines, ToCols);
+ _nc_sp_unlock_global(curses);
+ return (res);
+}
+#endif
/*
* This function reallocates NCURSES window structures. It is invoked in
* Because this performs memory allocation, it should not (in general) be
* invoked directly from the signal handler.
*/
-int
-resizeterm(int ToLines, int ToCols)
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(resizeterm) (NCURSES_SP_DCLx int ToLines, int ToCols)
{
- int stolen = screen_lines - SP->_lines_avail;
- int bottom = screen_lines + SP->_topstolen - stolen;
+ int result = ERR;
- T((T_CALLED("resizeterm(%d,%d) old(%d,%d)"),
- ToLines, ToCols,
- screen_lines, screen_columns));
+ T((T_CALLED("resizeterm(%p, %d,%d) old(%d,%d)"),
+ (void *) SP_PARM, ToLines, ToCols,
+ (SP_PARM == 0) ? -1 : screen_lines(SP_PARM),
+ (SP_PARM == 0) ? -1 : screen_columns(SP_PARM)));
- SP->_sig_winch = FALSE;
+ if (SP_PARM != 0) {
+ result = OK;
+ SP_PARM->_sig_winch = FALSE;
- if (ToLines != screen_lines
- || ToCols != screen_columns) {
- WINDOWLIST *wp;
+ if (NCURSES_SP_NAME(is_term_resized) (NCURSES_SP_ARGx ToLines, ToCols)) {
+#if USE_SIGWINCH
+ ripoff_t *rop;
+ bool slk_visible = (SP_PARM != 0
+ && SP_PARM->_slk != 0
+ && !(SP_PARM->_slk->hidden));
+
+ if (slk_visible) {
+ slk_clear();
+ }
+#endif
+ result = NCURSES_SP_NAME(resize_term) (NCURSES_SP_ARGx ToLines, ToCols);
#if USE_SIGWINCH
- ungetch(KEY_RESIZE); /* so application can know this */
- clearok(curscr, TRUE); /* screen contents are unknown */
-#endif
-
- for (wp = _nc_windows; wp != 0; wp = wp->next) {
- WINDOW *win = wp->win;
- int myLines = win->_maxy + 1;
- int myCols = win->_maxx + 1;
-
- /* pads aren't treated this way */
- if (win->_flags & _ISPAD)
- continue;
-
- if (win->_begy >= bottom) {
- win->_begy += (ToLines - screen_lines);
- } else {
- if (myLines == screen_lines - stolen
- && ToLines != screen_lines)
- myLines = ToLines - stolen;
- else
- if (myLines == screen_lines
- && ToLines != screen_lines)
- myLines = ToLines;
- }
-
- if (myCols == screen_columns
- && ToCols != screen_columns)
- myCols = ToCols;
-
- if (wresize(win, myLines, myCols) != OK)
- returnCode(ERR);
- }
+ clearok(CurScreen(SP_PARM), TRUE); /* screen contents are unknown */
- screen_lines = lines = ToLines;
- screen_columns = columns = ToCols;
+ /* 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 != StdScreen(SP_PARM)
+ && rop->win != 0
+ && rop->line < 0) {
- SP->_lines_avail = lines - stolen;
+ if (rop->hook != _nc_slk_initialize) {
+ touchwin(rop->win);
+ wnoutrefresh(rop->win);
+ }
+ }
+ }
- if (SP->oldhash) { FreeAndNull(SP->oldhash); }
- if (SP->newhash) { FreeAndNull(SP->newhash); }
+ /* soft-keys are a special case: we _know_ how to repaint them */
+ if (slk_visible) {
+ NCURSES_SP_NAME(slk_restore) (NCURSES_SP_ARG);
+ NCURSES_SP_NAME(slk_touch) (NCURSES_SP_ARG);
+ NCURSES_SP_NAME(slk_refresh) (NCURSES_SP_ARG);
+ }
+#endif
}
+#if USE_SIGWINCH
+ safe_ungetch(SP_PARM, KEY_RESIZE); /* so application can know this */
+#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 - stolen;
- COLS = ToCols;
+ returnCode(result);
+}
- returnCode(OK);
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+resizeterm(int ToLines, int ToCols)
+{
+ return NCURSES_SP_NAME(resizeterm) (CURRENT_SCREEN, ToLines, ToCols);
}
+#endif
projects / ncurses.git / blobdiff