File: [local] / src / usr.bin / vim / Attic / window.c (download)
Revision 1.1.1.1 (vendor branch), Sat Sep 7 21:40:24 1996 UTC (27 years, 9 months ago) by downsj
Branch: VIM
CVS Tags: VIM42
Changes since 1.1: +0 -0 lines
Initial import of vim 4.2.
This is meant to replace nvi in the tree. Vim, in general, works better,
provides more features, and does not suffer from the license problems
being imposed upon nvi.
On the other hand, vim lacks a non-visual ex mode, in addition to open mode.
This includes the GUI (X11) code, but doesn't try to compile it.
|
/* $OpenBSD: window.c,v 1.1.1.1 1996/09/07 21:40:24 downsj Exp $ */
/* vi:set ts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read a list of people who contributed.
* Do ":help credits" in Vim to see a list of people who contributed.
*/
#include "vim.h"
#include "globals.h"
#include "proto.h"
#include "option.h"
static void reset_VIsual __ARGS((void));
static int win_comp_pos __ARGS((void));
static void win_exchange __ARGS((long));
static void win_rotate __ARGS((int, int));
static void win_append __ARGS((WIN *, WIN *));
static void win_remove __ARGS((WIN *));
static void win_new_height __ARGS((WIN *, int));
static WIN *prevwin = NULL; /* previous window */
/*
* all CTRL-W window commands are handled here, called from normal().
*/
void
do_window(nchar, Prenum)
int nchar;
long Prenum;
{
long Prenum1;
WIN *wp;
char_u *ptr;
int len;
int type = -1;
WIN *wp2;
if (Prenum == 0)
Prenum1 = 1;
else
Prenum1 = Prenum;
switch (nchar)
{
/* split current window in two parts */
case 'S':
case Ctrl('S'):
case 's': reset_VIsual(); /* stop Visual mode */
win_split((int)Prenum, TRUE);
break;
/* split current window and edit alternate file */
case K_CCIRCM:
case '^':
reset_VIsual(); /* stop Visual mode */
stuffReadbuff((char_u *)":split #");
if (Prenum)
stuffnumReadbuff(Prenum); /* buffer number */
stuffcharReadbuff('\n');
break;
/* open new window */
case Ctrl('N'):
case 'n': reset_VIsual(); /* stop Visual mode */
stuffcharReadbuff(':');
if (Prenum)
stuffnumReadbuff(Prenum); /* window height */
stuffReadbuff((char_u *)"new\n"); /* it is cmdline.c */
break;
/* quit current window */
case Ctrl('Q'):
case 'q': reset_VIsual(); /* stop Visual mode */
stuffReadbuff((char_u *)":quit\n"); /* it is cmdline.c */
break;
/* close current window */
case Ctrl('C'):
case 'c': reset_VIsual(); /* stop Visual mode */
stuffReadbuff((char_u *)":close\n"); /* it is cmdline.c */
break;
/* close all but current window */
case Ctrl('O'):
case 'o': reset_VIsual(); /* stop Visual mode */
stuffReadbuff((char_u *)":only\n"); /* it is cmdline.c */
break;
/* cursor to next window */
case 'j':
case K_DOWN:
case Ctrl('J'):
for (wp = curwin; wp->w_next != NULL && Prenum1-- > 0;
wp = wp->w_next)
;
new_win:
/*
* When jumping to another buffer, stop visual mode
* Do this before changing windows so we can yank the
* selection into the '"*' register.
*/
if (wp->w_buffer != curbuf && VIsual_active)
{
end_visual_mode();
for (wp2 = firstwin; wp2 != NULL; wp2 = wp2->w_next)
if (wp2->w_buffer == curbuf &&
wp2->w_redr_type < NOT_VALID)
{
wp2->w_redr_type = NOT_VALID;
redraw_later(NOT_VALID);
}
}
win_enter(wp, TRUE);
cursupdate();
break;
/* cursor to next window with wrap around */
case Ctrl('W'):
case 'w':
/* cursor to previous window with wrap around */
case 'W':
if (lastwin == firstwin) /* just one window */
beep_flush();
else
{
if (Prenum) /* go to specified window */
{
for (wp = firstwin; --Prenum > 0; )
{
if (wp->w_next == NULL)
break;
else
wp = wp->w_next;
}
}
else
{
if (nchar == 'W') /* go to previous window */
{
wp = curwin->w_prev;
if (wp == NULL)
wp = lastwin; /* wrap around */
}
else /* go to next window */
{
wp = curwin->w_next;
if (wp == NULL)
wp = firstwin; /* wrap around */
}
}
goto new_win;
}
break;
/* cursor to window above */
case 'k':
case K_UP:
case Ctrl('K'):
for (wp = curwin; wp->w_prev != NULL && Prenum1-- > 0;
wp = wp->w_prev)
;
goto new_win;
/* cursor to top window */
case 't':
case Ctrl('T'):
wp = firstwin;
goto new_win;
/* cursor to bottom window */
case 'b':
case Ctrl('B'):
wp = lastwin;
goto new_win;
/* cursor to last accessed (previous) window */
case 'p':
case Ctrl('P'):
if (prevwin == NULL)
beep_flush();
else
{
wp = prevwin;
goto new_win;
}
break;
/* exchange current and next window */
case 'x':
case Ctrl('X'):
win_exchange(Prenum);
break;
/* rotate windows downwards */
case Ctrl('R'):
case 'r': reset_VIsual(); /* stop Visual mode */
win_rotate(FALSE, (int)Prenum1); /* downwards */
break;
/* rotate windows upwards */
case 'R': reset_VIsual(); /* stop Visual mode */
win_rotate(TRUE, (int)Prenum1); /* upwards */
break;
/* make all windows the same height */
case '=': win_equal(NULL, TRUE);
break;
/* increase current window height */
case '+': win_setheight(curwin->w_height + (int)Prenum1);
break;
/* decrease current window height */
case '-': win_setheight(curwin->w_height - (int)Prenum1);
break;
/* set current window height */
case Ctrl('_'):
case '_': win_setheight(Prenum ? (int)Prenum : 9999);
break;
/* jump to tag and split window if tag exists */
case ']':
case Ctrl(']'):
reset_VIsual(); /* stop Visual mode */
postponed_split = TRUE;
stuffcharReadbuff(Ctrl(']'));
break;
/* edit file name under cursor in a new window */
case 'f':
case Ctrl('F'):
reset_VIsual(); /* stop Visual mode */
ptr = file_name_at_cursor(FNAME_MESS|FNAME_HYP|FNAME_EXP);
if (ptr != NULL)
{
setpcmark();
if (win_split(0, FALSE) == OK)
(void)do_ecmd(0, ptr, NULL, NULL, p_hid, (linenr_t)0, FALSE);
vim_free(ptr);
}
break;
/* Go to the first occurence of the identifier under cursor along path in a
* new window -- webb
*/
case 'i': /* Go to any match */
case Ctrl('I'):
type = FIND_ANY;
/* FALLTHROUGH */
case 'd': /* Go to definition, using p_def */
case Ctrl('D'):
if (type == -1)
type = FIND_DEFINE;
if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0)
break;
find_pattern_in_path(ptr, len, TRUE, TRUE, type,
Prenum1, ACTION_SPLIT, (linenr_t)1, (linenr_t)MAXLNUM);
curwin->w_set_curswant = TRUE;
break;
default: beep_flush();
break;
}
}
static void
reset_VIsual()
{
if (VIsual_active)
{
end_visual_mode();
update_curbuf(NOT_VALID); /* delete the inversion */
}
}
/*
* split the current window, implements CTRL-W s and :split
*
* new_height is the height for the new window, 0 to make half of current
* height redraw is TRUE when redraw now
*
* return FAIL for failure, OK otherwise
*/
int
win_split(new_height, redraw)
int new_height;
int redraw;
{
WIN *wp;
linenr_t lnum;
int h;
int i;
int need_status;
int do_equal = (p_ea && new_height == 0);
int needed;
int available;
int curwin_height;
/* add a status line when p_ls == 1 and splitting the first window */
if (lastwin == firstwin && p_ls == 1 && curwin->w_status_height == 0)
need_status = STATUS_HEIGHT;
else
need_status = 0;
/*
* check if we are able to split the current window and compute its height
*/
available = curwin->w_height;
needed = 2 * MIN_ROWS + STATUS_HEIGHT + need_status;
if (p_ea)
{
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (wp != curwin)
{
available += wp->w_height;
needed += MIN_ROWS;
}
}
if (available < needed)
{
EMSG(e_noroom);
return FAIL;
}
curwin_height = curwin->w_height;
if (need_status)
{
curwin->w_status_height = STATUS_HEIGHT;
curwin_height -= STATUS_HEIGHT;
}
if (new_height == 0)
new_height = curwin_height / 2;
if (new_height > curwin_height - MIN_ROWS - STATUS_HEIGHT)
new_height = curwin_height - MIN_ROWS - STATUS_HEIGHT;
if (new_height < MIN_ROWS)
new_height = MIN_ROWS;
/* if it doesn't fit in the current window, need win_equal() */
if (curwin_height - new_height - STATUS_HEIGHT < MIN_ROWS)
do_equal = TRUE;
/*
* allocate new window structure and link it in the window list
*/
if (p_sb) /* new window below current one */
wp = win_alloc(curwin);
else
wp = win_alloc(curwin->w_prev);
if (wp == NULL)
return FAIL;
/*
* compute the new screen positions
*/
win_new_height(wp, new_height);
win_new_height(curwin, curwin_height - (new_height + STATUS_HEIGHT));
if (p_sb) /* new window below current one */
{
wp->w_winpos = curwin->w_winpos + curwin->w_height + STATUS_HEIGHT;
wp->w_status_height = curwin->w_status_height;
curwin->w_status_height = STATUS_HEIGHT;
}
else /* new window above current one */
{
wp->w_winpos = curwin->w_winpos;
wp->w_status_height = STATUS_HEIGHT;
curwin->w_winpos = wp->w_winpos + wp->w_height + STATUS_HEIGHT;
}
/*
* make the contents of the new window the same as the current one
*/
wp->w_buffer = curbuf;
curbuf->b_nwindows++;
wp->w_cursor = curwin->w_cursor;
wp->w_row = curwin->w_row;
wp->w_col = curwin->w_col;
wp->w_virtcol = curwin->w_virtcol;
wp->w_curswant = curwin->w_curswant;
wp->w_set_curswant = curwin->w_set_curswant;
wp->w_empty_rows = curwin->w_empty_rows;
wp->w_leftcol = curwin->w_leftcol;
wp->w_pcmark = curwin->w_pcmark;
wp->w_prev_pcmark = curwin->w_prev_pcmark;
wp->w_alt_fnum = curwin->w_alt_fnum;
wp->w_arg_idx = curwin->w_arg_idx;
/*
* copy tagstack and options from existing window
*/
for (i = 0; i < curwin->w_tagstacklen; i++)
{
wp->w_tagstack[i].fmark = curwin->w_tagstack[i].fmark;
wp->w_tagstack[i].tagname = strsave(curwin->w_tagstack[i].tagname);
}
wp->w_tagstackidx = curwin->w_tagstackidx;
wp->w_tagstacklen = curwin->w_tagstacklen;
win_copy_options(curwin, wp);
/*
* Both windows need redrawing
*/
wp->w_redr_type = NOT_VALID;
wp->w_redr_status = TRUE;
curwin->w_redr_type = NOT_VALID;
curwin->w_redr_status = TRUE;
/*
* Cursor is put in middle of window in both windows
*/
if (wp->w_height < curwin->w_height) /* use smallest of two heights */
h = wp->w_height;
else
h = curwin->w_height;
h >>= 1;
for (lnum = wp->w_cursor.lnum; lnum > 1; --lnum)
{
h -= plines(lnum);
if (h <= 0)
break;
}
wp->w_topline = lnum;
curwin->w_topline = lnum;
if (need_status)
{
msg_pos((int)Rows - 1, sc_col);
msg_clr_eos(); /* Old command/ruler may still be there -- webb */
comp_col();
msg_pos((int)Rows - 1, 0); /* put position back at start of line */
}
/*
* make the new window the current window and redraw
*/
if (do_equal)
win_equal(wp, FALSE);
win_enter(wp, FALSE);
if (redraw)
updateScreen(NOT_VALID);
return OK;
}
/*
* Return the number of windows.
*/
int
win_count()
{
WIN *wp;
int count = 0;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
++count;
return count;
}
/*
* Make 'count' windows on the screen.
* Return actual number of windows on the screen.
* Must be called when there is just one window, filling the whole screen
* (excluding the command line).
*/
int
make_windows(count)
int count;
{
int maxcount;
int todo;
int p_sb_save;
/*
* Each window needs at least MIN_ROWS lines and a status line.
* Add 4 lines for one window, otherwise we may end up with all one-line
* windows. Use value of 'winheight' if it is set
*/
maxcount = (curwin->w_height + curwin->w_status_height -
(p_wh ? (p_wh - 1) : 4)) / (MIN_ROWS + STATUS_HEIGHT);
if (maxcount < 2)
maxcount = 2;
if (count > maxcount)
count = maxcount;
/*
* add status line now, otherwise first window will be too big
*/
if ((p_ls == 2 || (count > 1 && p_ls == 1)) && curwin->w_status_height == 0)
{
curwin->w_status_height = STATUS_HEIGHT;
win_new_height(curwin, curwin->w_height - STATUS_HEIGHT);
}
/*
* set 'splitbelow' off for a moment, don't want that now
*/
p_sb_save = p_sb;
p_sb = FALSE;
/* todo is number of windows left to create */
for (todo = count - 1; todo > 0; --todo)
if (win_split(curwin->w_height - (curwin->w_height - todo
* STATUS_HEIGHT) / (todo + 1) - STATUS_HEIGHT, FALSE) == FAIL)
break;
p_sb = p_sb_save;
/* return actual number of windows */
return (count - todo);
}
/*
* Exchange current and next window
*/
static void
win_exchange(Prenum)
long Prenum;
{
WIN *wp;
WIN *wp2;
int temp;
if (lastwin == firstwin) /* just one window */
{
beep_flush();
return;
}
/*
* find window to exchange with
*/
if (Prenum)
{
wp = firstwin;
while (wp != NULL && --Prenum > 0)
wp = wp->w_next;
}
else if (curwin->w_next != NULL) /* Swap with next */
wp = curwin->w_next;
else /* Swap last window with previous */
wp = curwin->w_prev;
if (wp == curwin || wp == NULL)
return;
/*
* 1. remove curwin from the list. Remember after which window it was in wp2
* 2. insert curwin before wp in the list
* if wp != wp2
* 3. remove wp from the list
* 4. insert wp after wp2
* 5. exchange the status line height
*/
wp2 = curwin->w_prev;
win_remove(curwin);
win_append(wp->w_prev, curwin);
if (wp != wp2)
{
win_remove(wp);
win_append(wp2, wp);
}
temp = curwin->w_status_height;
curwin->w_status_height = wp->w_status_height;
wp->w_status_height = temp;
win_comp_pos(); /* recompute window positions */
win_enter(wp, TRUE);
cursupdate();
updateScreen(CLEAR);
#ifdef USE_GUI
if (gui.in_use)
{
if (gui.which_scrollbars[SB_LEFT])
gui_mch_reorder_scrollbars(SB_LEFT);
if (gui.which_scrollbars[SB_RIGHT])
gui_mch_reorder_scrollbars(SB_RIGHT);
}
#endif
}
/*
* rotate windows: if upwards TRUE the second window becomes the first one
* if upwards FALSE the first window becomes the second one
*/
static void
win_rotate(upwards, count)
int upwards;
int count;
{
WIN *wp;
int height;
if (firstwin == lastwin) /* nothing to do */
{
beep_flush();
return;
}
while (count--)
{
if (upwards) /* first window becomes last window */
{
wp = firstwin;
win_remove(wp);
win_append(lastwin, wp);
wp = lastwin->w_prev; /* previously last window */
}
else /* last window becomes first window */
{
wp = lastwin;
win_remove(lastwin);
win_append(NULL, wp);
wp = firstwin; /* previously last window */
}
/* exchange status height of old and new last window */
height = lastwin->w_status_height;
lastwin->w_status_height = wp->w_status_height;
wp->w_status_height = height;
/* recompute w_winpos for all windows */
(void) win_comp_pos();
}
cursupdate();
updateScreen(CLEAR);
#ifdef USE_GUI
if (gui.in_use)
{
if (gui.which_scrollbars[SB_LEFT])
gui_mch_reorder_scrollbars(SB_LEFT);
if (gui.which_scrollbars[SB_RIGHT])
gui_mch_reorder_scrollbars(SB_RIGHT);
}
#endif
}
/*
* Make all windows the same height.
* 'next_curwin' will soon be the current window, make sure it has enough
* rows.
*/
void
win_equal(next_curwin, redraw)
WIN *next_curwin; /* pointer to current window to be */
int redraw;
{
int total;
int less;
int wincount;
int winpos;
int temp;
WIN *wp;
int new_height;
/*
* count the number of lines available
*/
total = 0;
wincount = 0;
for (wp = firstwin; wp; wp = wp->w_next)
{
total += wp->w_height - MIN_ROWS;
wincount++;
}
/*
* If next_curwin given and 'winheight' set, make next_curwin p_wh lines.
*/
less = 0;
if (next_curwin != NULL)
{
if (p_wh)
{
if (p_wh - MIN_ROWS > total) /* all lines go to current window */
less = total;
else
{
less = p_wh - MIN_ROWS - total / wincount;
if (less < 0)
less = 0;
}
}
}
/*
* spread the available lines over the windows
*/
winpos = 0;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
{
if (wp == next_curwin && less)
{
less = 0;
temp = p_wh - MIN_ROWS;
if (temp > total)
temp = total;
}
else
temp = (total - less + (wincount >> 1)) / wincount;
new_height = MIN_ROWS + temp;
if (wp->w_winpos != winpos || wp->w_height != new_height)
{
wp->w_redr_type = NOT_VALID;
wp->w_redr_status = TRUE;
}
wp->w_winpos = winpos;
win_new_height(wp, new_height);
total -= temp;
--wincount;
winpos += wp->w_height + wp->w_status_height;
}
if (redraw)
{
cursupdate();
updateScreen(CLEAR);
}
}
/*
* close all windows for buffer 'buf'
*/
void
close_windows(buf)
BUF *buf;
{
WIN *win;
++RedrawingDisabled;
for (win = firstwin; win != NULL && lastwin != firstwin; )
{
if (win->w_buffer == buf)
{
close_window(win, FALSE);
win = firstwin; /* go back to the start */
}
else
win = win->w_next;
}
--RedrawingDisabled;
}
/*
* close window "win"
* If "free_buf" is TRUE related buffer may be freed.
*
* called by :quit, :close, :xit, :wq and findtag()
*/
void
close_window(win, free_buf)
WIN *win;
int free_buf;
{
WIN *wp;
if (lastwin == firstwin)
{
EMSG("Cannot close last window");
return;
}
/*
* Remove the window.
* if 'splitbelow' the free space goes to the window above it.
* if 'nosplitbelow' the free space goes to the window below it.
* This makes opening a window and closing it immediately keep the same window
* layout.
*/
/* freed space goes to next window */
if ((!p_sb && win->w_next != NULL) || win->w_prev == NULL)
{
wp = win->w_next;
wp->w_winpos = win->w_winpos;
}
else /* freed space goes to previous window */
wp = win->w_prev;
win_new_height(wp, wp->w_height + win->w_height + win->w_status_height);
#ifdef AUTOCMD
if (win == curwin)
{
if (wp->w_buffer != curbuf)
apply_autocmds(EVENT_BUFLEAVE, NULL, NULL);
apply_autocmds(EVENT_WINLEAVE, NULL, NULL);
}
#endif
/*
* Close the link to the buffer.
*/
close_buffer(win, win->w_buffer, free_buf, FALSE);
win_free(win);
if (win == curwin)
curwin = NULL;
if (p_ea)
win_equal(wp, FALSE);
if (curwin == NULL)
win_enter(wp, FALSE);
/*
* if last window has status line now and we don't want one,
* remove the status line
*/
if (lastwin->w_status_height &&
(p_ls == 0 || (p_ls == 1 && firstwin == lastwin)))
{
win_new_height(lastwin, lastwin->w_height + lastwin->w_status_height);
lastwin->w_status_height = 0;
comp_col();
}
updateScreen(NOT_VALID);
if (RedrawingDisabled)
comp_Botline(wp); /* need to do this before cursupdate() */
}
/*
* close all windows except current one
* buffers in the windows become hidden
*
* called by :only and do_arg_all();
*/
void
close_others(message)
int message;
{
WIN *wp;
WIN *nextwp;
if (lastwin == firstwin)
{
if (message
#ifdef AUTOCMD
&& !autocmd_busy
#endif
)
MSG("Already only one window");
return;
}
for (wp = firstwin; wp != NULL; wp = nextwp)
{
nextwp = wp->w_next;
if (wp == curwin) /* don't close current window */
continue;
/*
* Close the link to the buffer.
*/
close_buffer(wp, wp->w_buffer, FALSE, FALSE);
/*
* Remove the window. All lines go to current window.
*/
win_new_height(curwin,
curwin->w_height + wp->w_height + wp->w_status_height);
win_free(wp);
}
/*
* If current window has status line and we don't want one,
* remove the status line.
*/
if (curwin->w_status_height && p_ls != 2)
{
win_new_height(curwin, curwin->w_height + curwin->w_status_height);
curwin->w_status_height = 0;
}
curwin->w_winpos = 0; /* put current window at top of the screen */
if (message)
updateScreen(NOT_VALID);
}
/*
* init the cursor in the window
*
* called when a new file is being edited
*/
void
win_init(wp)
WIN *wp;
{
wp->w_redr_type = NOT_VALID;
wp->w_cursor.lnum = 1;
wp->w_curswant = wp->w_cursor.col = 0;
wp->w_pcmark.lnum = 1; /* pcmark not cleared but set to line 1 */
wp->w_pcmark.col = 0;
wp->w_prev_pcmark.lnum = 0;
wp->w_prev_pcmark.col = 0;
wp->w_topline = 1;
wp->w_botline = 2;
}
/*
* make window wp the current window
*/
void
win_enter(wp, undo_sync)
WIN *wp;
int undo_sync;
{
#ifdef AUTOCMD
int other_buffer = FALSE;
#endif
if (wp == curwin) /* nothing to do */
return;
#ifdef AUTOCMD
if (curwin != NULL)
{
if (wp->w_buffer != curbuf)
{
apply_autocmds(EVENT_BUFLEAVE, NULL, NULL);
other_buffer = TRUE;
}
apply_autocmds(EVENT_WINLEAVE, NULL, NULL);
}
#endif
/* sync undo before leaving the current buffer */
if (undo_sync && curbuf != wp->w_buffer)
u_sync();
/* may have to copy the buffer options when 'cpo' contains 'S' */
if (wp->w_buffer != curbuf)
buf_copy_options(curbuf, wp->w_buffer, TRUE);
if (curwin != NULL)
prevwin = curwin; /* remember for CTRL-W p */
curwin = wp;
curbuf = wp->w_buffer;
#ifdef AUTOCMD
apply_autocmds(EVENT_WINENTER, NULL, NULL);
if (other_buffer)
apply_autocmds(EVENT_BUFENTER, NULL, NULL);
#endif
maketitle();
/* set window height to desired minimal value */
if (p_wh && curwin->w_height < p_wh)
win_setheight((int)p_wh);
#ifdef USE_MOUSE
setmouse(); /* in case jumped to/from help buffer */
#endif
}
/*
* allocate a window structure and link it in the window list
*/
WIN *
win_alloc(after)
WIN *after;
{
WIN *newwin;
/*
* allocate window structure and linesizes arrays
*/
newwin = (WIN *)alloc((unsigned)sizeof(WIN));
if (newwin)
{
/*
* most stucture members have to be zero
*/
(void)vim_memset(newwin, 0, sizeof(WIN));
/*
* link the window in the window list
*/
win_append(after, newwin);
win_alloc_lsize(newwin);
/* position the display and the cursor at the top of the file. */
newwin->w_topline = 1;
newwin->w_botline = 2;
newwin->w_cursor.lnum = 1;
#ifdef USE_GUI
/* Let the GUI know this is a new scrollbar */
newwin->w_scrollbar.height = 0;
#endif /* USE_GUI */
}
return newwin;
}
/*
* remove window 'wp' from the window list and free the structure
*/
void
win_free(wp)
WIN *wp;
{
int i;
if (prevwin == wp)
prevwin = NULL;
win_free_lsize(wp);
for (i = 0; i < wp->w_tagstacklen; ++i)
free(wp->w_tagstack[i].tagname);
#ifdef USE_GUI
if (gui.in_use)
gui_mch_destroy_scrollbar(wp);
#endif /* USE_GUI */
win_remove(wp);
vim_free(wp);
}
static void
win_append(after, wp)
WIN *after, *wp;
{
WIN *before;
if (after == NULL) /* after NULL is in front of the first */
before = firstwin;
else
before = after->w_next;
wp->w_next = before;
wp->w_prev = after;
if (after == NULL)
firstwin = wp;
else
after->w_next = wp;
if (before == NULL)
lastwin = wp;
else
before->w_prev = wp;
}
/*
* remove window from the window list
*/
static void
win_remove(wp)
WIN *wp;
{
if (wp->w_prev)
wp->w_prev->w_next = wp->w_next;
else
firstwin = wp->w_next;
if (wp->w_next)
wp->w_next->w_prev = wp->w_prev;
else
lastwin = wp->w_prev;
}
/*
* allocate lsize arrays for a window
* return FAIL for failure, OK for success
*/
int
win_alloc_lsize(wp)
WIN *wp;
{
wp->w_lsize_valid = 0;
wp->w_lsize_lnum = (linenr_t *) malloc((size_t) (Rows * sizeof(linenr_t)));
wp->w_lsize = (char_u *)malloc((size_t) Rows);
if (wp->w_lsize_lnum == NULL || wp->w_lsize == NULL)
{
win_free_lsize(wp); /* one of the two may have worked */
wp->w_lsize_lnum = NULL;
wp->w_lsize = NULL;
return FAIL;
}
return OK;
}
/*
* free lsize arrays for a window
*/
void
win_free_lsize(wp)
WIN *wp;
{
vim_free(wp->w_lsize_lnum);
vim_free(wp->w_lsize);
}
/*
* call this fuction whenever Rows changes value
*/
void
screen_new_rows()
{
WIN *wp;
int extra_lines;
if (firstwin == NULL) /* not initialized yet */
return;
/*
* the number of extra lines is the difference between the position where
* the command line should be and where it is now
*/
compute_cmdrow();
extra_lines = Rows - p_ch - cmdline_row;
if (extra_lines < 0) /* reduce windows height */
{
for (wp = lastwin; wp; wp = wp->w_prev)
{
if (wp->w_height - MIN_ROWS < -extra_lines)
{
extra_lines += wp->w_height - MIN_ROWS;
win_new_height(wp, MIN_ROWS);
}
else
{
win_new_height(wp, wp->w_height + extra_lines);
break;
}
}
(void)win_comp_pos(); /* compute w_winpos */
}
else if (extra_lines > 0) /* increase height of last window */
win_new_height(lastwin, lastwin->w_height + extra_lines);
compute_cmdrow();
if (p_ea)
win_equal(curwin, FALSE);
}
/*
* update the w_winpos field for all windows
* returns the row just after the last window
*/
static int
win_comp_pos()
{
WIN *wp;
int row;
row = 0;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
{
if (wp->w_winpos != row) /* if position changes, redraw */
{
wp->w_winpos = row;
wp->w_redr_type = NOT_VALID;
wp->w_redr_status = TRUE;
}
row += wp->w_height + wp->w_status_height;
}
return row;
}
/*
* set current window height
*/
void
win_setheight(height)
int height;
{
WIN *wp;
int room; /* total number of lines available */
int take; /* number of lines taken from other windows */
int room_cmdline; /* lines available from cmdline */
int row;
int run;
if (height < MIN_ROWS) /* need at least some lines */
height = MIN_ROWS;
/*
* compute the room we have from all the windows
*/
room = MIN_ROWS; /* count the MIN_ROWS for the current window */
for (wp = firstwin; wp != NULL; wp = wp->w_next)
room += wp->w_height - MIN_ROWS;
/*
* compute the room available from the command line
*/
room_cmdline = Rows - p_ch - cmdline_row;
/*
* limit new height to the room available
*/
if (height > room + room_cmdline) /* can't make it that large */
height = room + room_cmdline; /* use all available room */
/*
* compute the number of lines we will take from the windows (can be negative)
*/
take = height - curwin->w_height;
if (take == 0) /* no change, nothing to do */
return;
if (take > 0)
{
take -= room_cmdline; /* use lines from cmdline first */
if (take < 0)
take = 0;
}
/*
* set the current window to the new height
*/
win_new_height(curwin, height);
/*
* First take lines from the windows below the current window.
* If that is not enough, takes lines from windows above the current window.
*/
for (run = 0; run < 2; ++run)
{
if (run == 0)
wp = curwin->w_next; /* 1st run: start with next window */
else
wp = curwin->w_prev; /* 2nd run: start with prev window */
while (wp != NULL && take != 0)
{
if (wp->w_height - take < MIN_ROWS)
{
take -= wp->w_height - MIN_ROWS;
win_new_height(wp, MIN_ROWS);
}
else
{
win_new_height(wp, wp->w_height - take);
take = 0;
}
if (run == 0)
wp = wp->w_next;
else
wp = wp->w_prev;
}
}
/* recompute the window positions */
row = win_comp_pos();
/*
* If there is extra space created between the last window and the command line,
* clear it.
*/
screen_fill(row, cmdline_row, 0, (int)Columns, ' ', ' ');
cmdline_row = row;
updateScreen(NOT_VALID);
}
#ifdef USE_MOUSE
void
win_drag_status_line(offset)
int offset;
{
WIN *wp;
int room;
int row;
int up; /* if TRUE, drag status line up, otherwise down */
if (offset < 0)
{
up = TRUE;
offset = -offset;
}
else
up = FALSE;
if (up) /* drag up */
{
room = 0;
for (wp = curwin; wp != NULL && room < offset; wp = wp->w_prev)
room += wp->w_height - MIN_ROWS;
wp = curwin->w_next; /* put wp at window that grows */
}
else /* drag down */
{
/*
* Only dragging the last status line can reduce p_ch.
*/
room = Rows - cmdline_row;
if (curwin->w_next == NULL)
room -= 1;
else
room -= p_ch;
for (wp = curwin->w_next; wp != NULL && room < offset; wp = wp->w_next)
room += wp->w_height - MIN_ROWS;
wp = curwin; /* put wp at window that grows */
}
if (room < offset) /* Not enough room */
offset = room; /* Move as far as we can */
if (offset <= 0)
return;
if (wp != NULL) /* grow window wp by offset lines */
win_new_height(wp, wp->w_height + offset);
if (up)
wp = curwin; /* current window gets smaller */
else
wp = curwin->w_next; /* next window gets smaller */
while (wp != NULL && offset > 0)
{
if (wp->w_height - offset < MIN_ROWS)
{
offset -= wp->w_height - MIN_ROWS;
win_new_height(wp, MIN_ROWS);
}
else
{
win_new_height(wp, wp->w_height - offset);
offset = 0;
}
if (up)
wp = wp->w_prev;
else
wp = wp->w_next;
}
row = win_comp_pos();
screen_fill(row, cmdline_row, 0, (int)Columns, ' ', ' ');
cmdline_row = row;
p_ch = Rows - cmdline_row;
updateScreen(NOT_VALID);
showmode();
}
#endif /* USE_MOUSE */
/*
* Set new window height.
*/
static void
win_new_height(wp, height)
WIN *wp;
int height;
{
/* should adjust topline to keep cursor at same relative postition */
wp->w_height = height;
win_comp_scroll(wp);
wp->w_redr_type = NOT_VALID;
wp->w_redr_status = TRUE;
}
void
win_comp_scroll(wp)
WIN *wp;
{
wp->w_p_scroll = (wp->w_height >> 1);
if (wp->w_p_scroll == 0)
wp->w_p_scroll = 1;
}
/*
* command_height: called whenever p_ch has been changed
*/
void
command_height()
{
int current;
current = Rows - cmdline_row;
if (p_ch > current) /* p_ch got bigger */
{
if (lastwin->w_height - (p_ch - current) < MIN_ROWS)
{
emsg(e_noroom);
p_ch = lastwin->w_height - MIN_ROWS + current;
}
/* clear the lines added to cmdline */
screen_fill((int)(Rows - p_ch), (int)Rows, 0, (int)Columns, ' ', ' ');
}
win_new_height(lastwin, lastwin->w_height + current - (int)p_ch);
cmdline_row = Rows - p_ch;
redraw_cmdline = TRUE;
}
void
last_status()
{
if (lastwin->w_status_height)
{
/* remove status line */
if (p_ls == 0 || (p_ls == 1 && firstwin == lastwin))
{
win_new_height(lastwin, lastwin->w_height + 1);
lastwin->w_status_height = 0;
}
}
else
{
/* add status line */
if (p_ls == 2 || (p_ls == 1 && firstwin != lastwin))
{
if (lastwin->w_height <= MIN_ROWS) /* can't do it */
emsg(e_noroom);
else
{
win_new_height(lastwin, lastwin->w_height - 1);
lastwin->w_status_height = 1;
}
}
}
}
/*
* file_name_at_cursor()
*
* Return the name of the file under (or to the right of) the cursor. The
* p_path variable is searched if the file name does not start with '/'.
* The string returned has been alloc'ed and should be freed by the caller.
* NULL is returned if the file name or file is not found.
*/
char_u *
file_name_at_cursor(options)
int options;
{
return get_file_name_in_path(ml_get_curline(),
curwin->w_cursor.col, options);
}
/* options:
* FNAME_MESS give error messages
* FNAME_EXP expand to path
* FNAME_HYP check for hypertext link
*/
char_u *
get_file_name_in_path(ptr, col, options)
char_u *ptr;
int col;
int options;
{
char_u *dir;
char_u *file_name;
char_u save_char;
char_u *curr_path = NULL;
int curr_path_len;
int len;
/* search forward for what could be the start of a file name */
while (ptr[col] != NUL && !isfilechar(ptr[col]))
++col;
if (ptr[col] == NUL) /* nothing found */
{
if (options & FNAME_MESS)
EMSG("No file name under cursor");
return NULL;
}
/* search backward for char that cannot be in a file name */
while (col >= 0 && isfilechar(ptr[col]))
--col;
ptr += col + 1;
col = 0;
/* search forward for a char that cannot be in a file name */
while (isfilechar(ptr[col]))
++col;
if (options & FNAME_HYP)
{
/* For hypertext links, ignore the name of the machine.
* Such a link looks like "type://machine/path". Only "/path" is used.
* First search for the string "://", then for the extra '/'
*/
if ((file_name = vim_strchr(ptr, ':')) != NULL &&
STRNCMP(file_name, "://", (size_t)3) == 0 &&
(file_name = vim_strchr(file_name + 3, '/')) != NULL &&
file_name < ptr + col)
{
col -= file_name - ptr;
ptr = file_name;
if (ptr[1] == '~') /* skip '/' for /~user/path */
{
++ptr;
--col;
}
}
}
if (!(options & FNAME_EXP))
return strnsave(ptr, col);
/* copy file name into NameBuff, expanding environment variables */
save_char = ptr[col];
ptr[col] = NUL;
expand_env(ptr, NameBuff, MAXPATHL);
ptr[col] = save_char;
if (isFullName(NameBuff)) /* absolute path */
{
if ((file_name = strsave(NameBuff)) == NULL)
return NULL;
if (getperm(file_name) >= 0)
return file_name;
if (options & FNAME_MESS)
{
sprintf((char *)IObuff, "Can't find file `%s'", NameBuff);
emsg(IObuff);
}
}
else /* relative path, use 'path' option */
{
if (curbuf->b_xfilename != NULL)
{
curr_path = curbuf->b_xfilename;
ptr = gettail(curr_path);
curr_path_len = ptr - curr_path;
}
else
curr_path_len = 0;
if ((file_name = alloc((int)(curr_path_len + STRLEN(p_path) +
STRLEN(NameBuff) + 3))) == NULL)
return NULL;
for (dir = p_path; *dir;)
{
len = copy_option_part(&dir, file_name, 31000, " ,");
/* len == 0 means: use current directory */
if (len != 0)
{
/* Look for file relative to current file */
if (file_name[0] == '.' && curr_path_len > 0)
{
if (len == 1) /* just a "." */
len = 0;
else /* "./path": move "path" */
{
len -= 2;
vim_memmove(file_name + curr_path_len, file_name + 2,
(size_t)len);
}
STRNCPY(file_name, curr_path, curr_path_len);
len += curr_path_len;
}
if (!ispathsep(file_name[len - 1]))
file_name[len++] = PATHSEP;
}
STRCPY(file_name + len, NameBuff);
if (getperm(file_name) >= 0)
return file_name;
}
if (options & FNAME_MESS)
EMSG2("Can't find file \"%s\" in path", NameBuff);
}
vim_free(file_name); /* file doesn't exist */
return NULL;
}
/*
* Return the minimal number of rows that is needed on the screen to display
* the current number of windows.
*/
int
min_rows()
{
WIN *wp;
int total;
if (firstwin == NULL) /* not initialized yet */
return MIN_ROWS + 1; /* one window plus command line */
total = p_ch; /* count the room for the status line */
for (wp = firstwin; wp != NULL; wp = wp->w_next)
total += MIN_ROWS + wp->w_status_height;
return total;
}
/*
* Return TRUE if there is only one window, not counting a help window, unless
* it is the current window.
*/
int
only_one_window()
{
int count = 0;
WIN *wp;
for (wp = firstwin; wp != NULL; wp = wp->w_next)
if (!wp->w_buffer->b_help || wp == curwin)
++count;
return (count <= 1);
}
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