From da51dc9cf202772f60bd2da975dbef257bd9237c Mon Sep 17 00:00:00 2001 From: Eliseo Martínez Date: Mon, 12 May 2014 02:25:17 +0200 Subject: Introduce nvim namespace: Move files. Move files from src/ to src/nvim/. - src/nvim/ becomes the new root dir for nvim executable sources. - src/libnvim/ is planned to become root dir of the neovim library. --- src/nvim/window.c | 5394 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 5394 insertions(+) create mode 100644 src/nvim/window.c (limited to 'src/nvim/window.c') diff --git a/src/nvim/window.c b/src/nvim/window.c new file mode 100644 index 0000000000..27582184d7 --- /dev/null +++ b/src/nvim/window.c @@ -0,0 +1,5394 @@ +/* + * 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. + * See README.txt for an overview of the Vim source code. + */ + +#include "vim.h" +#include "window.h" +#include "buffer.h" +#include "charset.h" +#include "diff.h" +#include "edit.h" +#include "eval.h" +#include "ex_cmds.h" +#include "ex_cmds2.h" +#include "ex_docmd.h" +#include "ex_eval.h" +#include "ex_getln.h" +#include "farsi.h" +#include "fileio.h" +#include "fold.h" +#include "getchar.h" +#include "hashtab.h" +#include "main.h" +#include "mark.h" +#include "memline.h" +#include "memory.h" +#include "message.h" +#include "misc1.h" +#include "misc2.h" +#include "file_search.h" +#include "garray.h" +#include "move.h" +#include "normal.h" +#include "option.h" +#include "os_unix.h" +#include "path.h" +#include "quickfix.h" +#include "regexp.h" +#include "screen.h" +#include "search.h" +#include "syntax.h" +#include "term.h" +#include "undo.h" +#include "os/os.h" + +static void win_init(win_T *newp, win_T *oldp, int flags); +static void win_init_some(win_T *newp, win_T *oldp); +static void frame_comp_pos(frame_T *topfrp, int *row, int *col); +static void frame_setheight(frame_T *curfrp, int height); +static void frame_setwidth(frame_T *curfrp, int width); +static void win_exchange(long); +static void win_rotate(int, int); +static void win_totop(int size, int flags); +static void win_equal_rec(win_T *next_curwin, int current, frame_T *topfr, + int dir, int col, int row, int width, + int height); +static int last_window(void); +static int close_last_window_tabpage(win_T *win, int free_buf, + tabpage_T *prev_curtab); +static win_T *win_free_mem(win_T *win, int *dirp, tabpage_T *tp); +static frame_T *win_altframe(win_T *win, tabpage_T *tp); +static tabpage_T *alt_tabpage(void); +static win_T *frame2win(frame_T *frp); +static int frame_has_win(frame_T *frp, win_T *wp); +static void frame_new_height(frame_T *topfrp, int height, int topfirst, + int wfh); +static int frame_fixed_height(frame_T *frp); +static int frame_fixed_width(frame_T *frp); +static void frame_add_statusline(frame_T *frp); +static void frame_new_width(frame_T *topfrp, int width, int leftfirst, + int wfw); +static void frame_add_vsep(frame_T *frp); +static int frame_minwidth(frame_T *topfrp, win_T *next_curwin); +static void frame_fix_width(win_T *wp); +static int win_alloc_firstwin(win_T *oldwin); +static void new_frame(win_T *wp); +static tabpage_T *alloc_tabpage(void); +static int leave_tabpage(buf_T *new_curbuf, int trigger_leave_autocmds); +static void enter_tabpage(tabpage_T *tp, buf_T *old_curbuf, + int trigger_enter_autocmds, + int trigger_leave_autocmds); +static void frame_fix_height(win_T *wp); +static int frame_minheight(frame_T *topfrp, win_T *next_curwin); +static void win_enter_ext(win_T *wp, int undo_sync, int no_curwin, + int trigger_enter_autocmds, + int trigger_leave_autocmds); +static void win_free(win_T *wp, tabpage_T *tp); +static void frame_append(frame_T *after, frame_T *frp); +static void frame_insert(frame_T *before, frame_T *frp); +static void frame_remove(frame_T *frp); +static void win_goto_ver(int up, long count); +static void win_goto_hor(int left, long count); +static void frame_add_height(frame_T *frp, int n); +static void last_status_rec(frame_T *fr, int statusline); + +static void make_snapshot_rec(frame_T *fr, frame_T **frp); +static void clear_snapshot(tabpage_T *tp, int idx); +static void clear_snapshot_rec(frame_T *fr); +static int check_snapshot_rec(frame_T *sn, frame_T *fr); +static win_T *restore_snapshot_rec(frame_T *sn, frame_T *fr); + +static int frame_check_height(frame_T *topfrp, int height); +static int frame_check_width(frame_T *topfrp, int width); + + +static win_T *win_alloc(win_T *after, int hidden); +static void set_fraction(win_T *wp); + +#define NOWIN (win_T *)-1 /* non-existing window */ + +# define ROWS_AVAIL (Rows - p_ch - tabline_height()) + + +static char *m_onlyone = N_("Already only one window"); + +/* + * all CTRL-W window commands are handled here, called from normal_cmd(). + */ +void +do_window ( + int nchar, + long Prenum, + int xchar /* extra char from ":wincmd gx" or NUL */ +) +{ + long Prenum1; + win_T *wp; + char_u *ptr; + linenr_T lnum = -1; + int type = FIND_DEFINE; + int len; + char_u cbuf[40]; + + if (Prenum == 0) + Prenum1 = 1; + else + Prenum1 = Prenum; + +# define CHECK_CMDWIN if (cmdwin_type != 0) { EMSG(_(e_cmdwin)); break; } + + switch (nchar) { + /* split current window in two parts, horizontally */ + case 'S': + case Ctrl_S: + case 's': + CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */ + /* When splitting the quickfix window open a new buffer in it, + * don't replicate the quickfix buffer. */ + if (bt_quickfix(curbuf)) + goto newwindow; + win_split((int)Prenum, 0); + break; + + /* split current window in two parts, vertically */ + case Ctrl_V: + case 'v': + CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */ + /* When splitting the quickfix window open a new buffer in it, + * don't replicate the quickfix buffer. */ + if (bt_quickfix(curbuf)) + goto newwindow; + win_split((int)Prenum, WSP_VERT); + break; + + /* split current window and edit alternate file */ + case Ctrl_HAT: + case '^': + CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */ + STRCPY(cbuf, "split #"); + if (Prenum) + vim_snprintf((char *)cbuf + 7, sizeof(cbuf) - 7, + "%" PRId64, (int64_t)Prenum); + do_cmdline_cmd(cbuf); + break; + + /* open new window */ + case Ctrl_N: + case 'n': + CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */ +newwindow: + if (Prenum) + /* window height */ + vim_snprintf((char *)cbuf, sizeof(cbuf) - 5, "%" PRId64, (int64_t)Prenum); + else + cbuf[0] = NUL; + if (nchar == 'v' || nchar == Ctrl_V) + STRCAT(cbuf, "v"); + STRCAT(cbuf, "new"); + do_cmdline_cmd(cbuf); + break; + + /* quit current window */ + case Ctrl_Q: + case 'q': + reset_VIsual_and_resel(); /* stop Visual mode */ + do_cmdline_cmd((char_u *)"quit"); + break; + + /* close current window */ + case Ctrl_C: + case 'c': + reset_VIsual_and_resel(); /* stop Visual mode */ + do_cmdline_cmd((char_u *)"close"); + break; + + /* close preview window */ + case Ctrl_Z: + case 'z': + CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */ + do_cmdline_cmd((char_u *)"pclose"); + break; + + /* cursor to preview window */ + case 'P': + for (wp = firstwin; wp != NULL; wp = wp->w_next) + if (wp->w_p_pvw) + break; + if (wp == NULL) + EMSG(_("E441: There is no preview window")); + else + win_goto(wp); + break; + + /* close all but current window */ + case Ctrl_O: + case 'o': + CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */ + do_cmdline_cmd((char_u *)"only"); + break; + + /* cursor to next window with wrap around */ + case Ctrl_W: + case 'w': + /* cursor to previous window with wrap around */ + case 'W': + CHECK_CMDWIN + if (firstwin == lastwin && Prenum != 1) /* 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 */ + } + } + win_goto(wp); + } + break; + + /* cursor to window below */ + case 'j': + case K_DOWN: + case Ctrl_J: + CHECK_CMDWIN win_goto_ver(FALSE, Prenum1); + break; + + /* cursor to window above */ + case 'k': + case K_UP: + case Ctrl_K: + CHECK_CMDWIN win_goto_ver(TRUE, Prenum1); + break; + + /* cursor to left window */ + case 'h': + case K_LEFT: + case Ctrl_H: + case K_BS: + CHECK_CMDWIN win_goto_hor(TRUE, Prenum1); + break; + + /* cursor to right window */ + case 'l': + case K_RIGHT: + case Ctrl_L: + CHECK_CMDWIN win_goto_hor(FALSE, Prenum1); + break; + + /* move window to new tab page */ + case 'T': + if (one_window()) + MSG(_(m_onlyone)); + else { + tabpage_T *oldtab = curtab; + tabpage_T *newtab; + + /* First create a new tab with the window, then go back to + * the old tab and close the window there. */ + wp = curwin; + if (win_new_tabpage((int)Prenum) == OK + && valid_tabpage(oldtab)) { + newtab = curtab; + goto_tabpage_tp(oldtab, TRUE, TRUE); + if (curwin == wp) + win_close(curwin, FALSE); + if (valid_tabpage(newtab)) + goto_tabpage_tp(newtab, TRUE, TRUE); + } + } + break; + + /* cursor to top-left window */ + case 't': + case Ctrl_T: + win_goto(firstwin); + break; + + /* cursor to bottom-right window */ + case 'b': + case Ctrl_B: + win_goto(lastwin); + break; + + /* cursor to last accessed (previous) window */ + case 'p': + case Ctrl_P: + if (prevwin == NULL) + beep_flush(); + else + win_goto(prevwin); + break; + + /* exchange current and next window */ + case 'x': + case Ctrl_X: + CHECK_CMDWIN win_exchange(Prenum); + break; + + /* rotate windows downwards */ + case Ctrl_R: + case 'r': + CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */ + win_rotate(FALSE, (int)Prenum1); /* downwards */ + break; + + /* rotate windows upwards */ + case 'R': + CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */ + win_rotate(TRUE, (int)Prenum1); /* upwards */ + break; + + /* move window to the very top/bottom/left/right */ + case 'K': + case 'J': + case 'H': + case 'L': + CHECK_CMDWIN win_totop((int)Prenum, + ((nchar == 'H' || nchar == 'L') ? WSP_VERT : 0) + | ((nchar == 'H' || nchar == 'K') ? WSP_TOP : WSP_BOT)); + break; + + /* make all windows the same height */ + case '=': + win_equal(NULL, FALSE, 'b'); + 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; + + /* increase current window width */ + case '>': + win_setwidth(curwin->w_width + (int)Prenum1); + break; + + /* decrease current window width */ + case '<': + win_setwidth(curwin->w_width - (int)Prenum1); + break; + + /* set current window width */ + case '|': + win_setwidth(Prenum != 0 ? (int)Prenum : 9999); + break; + + /* jump to tag and split window if tag exists (in preview window) */ + case '}': + CHECK_CMDWIN + if (Prenum) + g_do_tagpreview = Prenum; + else + g_do_tagpreview = p_pvh; + /*FALLTHROUGH*/ + case ']': + case Ctrl_RSB: + CHECK_CMDWIN reset_VIsual_and_resel(); /* stop Visual mode */ + if (Prenum) + postponed_split = Prenum; + else + postponed_split = -1; + + /* Execute the command right here, required when + * "wincmd ]" was used in a function. */ + do_nv_ident(Ctrl_RSB, NUL); + break; + + /* edit file name under cursor in a new window */ + case 'f': + case 'F': + case Ctrl_F: +wingotofile: + CHECK_CMDWIN + + ptr = grab_file_name(Prenum1, &lnum); + if (ptr != NULL) { + setpcmark(); + if (win_split(0, 0) == OK) { + RESET_BINDING(curwin); + (void)do_ecmd(0, ptr, NULL, NULL, ECMD_LASTL, + ECMD_HIDE, NULL); + if (nchar == 'F' && lnum >= 0) { + curwin->w_cursor.lnum = lnum; + check_cursor_lnum(); + beginline(BL_SOL | BL_FIX); + } + } + free(ptr); + } + break; + + /* Go to the first occurrence 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 'define' */ + case Ctrl_D: + CHECK_CMDWIN + if ((len = find_ident_under_cursor(&ptr, FIND_IDENT)) == 0) + break; + find_pattern_in_path(ptr, 0, len, TRUE, + Prenum == 0 ? TRUE : FALSE, type, + Prenum1, ACTION_SPLIT, (linenr_T)1, (linenr_T)MAXLNUM); + curwin->w_set_curswant = TRUE; + break; + + case K_KENTER: + case CAR: + /* + * In a quickfix window a jumps to the error under the + * cursor in a new window. + */ + if (bt_quickfix(curbuf)) { + sprintf((char *)cbuf, "split +%" PRId64 "%s", + (int64_t)curwin->w_cursor.lnum, + (curwin->w_llist_ref == NULL) ? "cc" : "ll"); + do_cmdline_cmd(cbuf); + } + break; + + + /* CTRL-W g extended commands */ + case 'g': + case Ctrl_G: + CHECK_CMDWIN +#ifdef USE_ON_FLY_SCROLL + dont_scroll = TRUE; /* disallow scrolling here */ +#endif + ++ no_mapping; + ++allow_keys; /* no mapping for xchar, but allow key codes */ + if (xchar == NUL) + xchar = plain_vgetc(); + LANGMAP_ADJUST(xchar, TRUE); + --no_mapping; + --allow_keys; + (void)add_to_showcmd(xchar); + switch (xchar) { + case '}': + xchar = Ctrl_RSB; + if (Prenum) + g_do_tagpreview = Prenum; + else + g_do_tagpreview = p_pvh; + /*FALLTHROUGH*/ + case ']': + case Ctrl_RSB: + reset_VIsual_and_resel(); /* stop Visual mode */ + if (Prenum) + postponed_split = Prenum; + else + postponed_split = -1; + + /* Execute the command right here, required when + * "wincmd g}" was used in a function. */ + do_nv_ident('g', xchar); + break; + + case 'f': /* CTRL-W gf: "gf" in a new tab page */ + case 'F': /* CTRL-W gF: "gF" in a new tab page */ + cmdmod.tab = tabpage_index(curtab) + 1; + nchar = xchar; + goto wingotofile; + default: + beep_flush(); + break; + } + break; + + default: beep_flush(); + break; + } +} + +/* + * split the current window, implements CTRL-W s and :split + * + * "size" is the height or width for the new window, 0 to use half of current + * height or width. + * + * "flags": + * WSP_ROOM: require enough room for new window + * WSP_VERT: vertical split. + * WSP_TOP: open window at the top-left of the shell (help window). + * WSP_BOT: open window at the bottom-right of the shell (quickfix window). + * WSP_HELP: creating the help window, keep layout snapshot + * + * return FAIL for failure, OK otherwise + */ +int win_split(int size, int flags) +{ + /* When the ":tab" modifier was used open a new tab page instead. */ + if (may_open_tabpage() == OK) + return OK; + + /* Add flags from ":vertical", ":topleft" and ":botright". */ + flags |= cmdmod.split; + if ((flags & WSP_TOP) && (flags & WSP_BOT)) { + EMSG(_("E442: Can't split topleft and botright at the same time")); + return FAIL; + } + + /* When creating the help window make a snapshot of the window layout. + * Otherwise clear the snapshot, it's now invalid. */ + if (flags & WSP_HELP) + make_snapshot(SNAP_HELP_IDX); + else + clear_snapshot(curtab, SNAP_HELP_IDX); + + return win_split_ins(size, flags, NULL, 0); +} + +/* + * When "new_wp" is NULL: split the current window in two. + * When "new_wp" is not NULL: insert this window at the far + * top/left/right/bottom. + * return FAIL for failure, OK otherwise + */ +int win_split_ins(int size, int flags, win_T *new_wp, int dir) +{ + win_T *wp = new_wp; + win_T *oldwin; + int new_size = size; + int i; + int need_status = 0; + int do_equal = FALSE; + int needed; + int available; + int oldwin_height = 0; + int layout; + frame_T *frp, *curfrp; + int before; + + if (flags & WSP_TOP) + oldwin = firstwin; + else if (flags & WSP_BOT) + oldwin = lastwin; + else + oldwin = curwin; + + /* add a status line when p_ls == 1 and splitting the first window */ + if (lastwin == firstwin && p_ls == 1 && oldwin->w_status_height == 0) { + if (oldwin->w_height <= p_wmh && new_wp == NULL) { + EMSG(_(e_noroom)); + return FAIL; + } + need_status = STATUS_HEIGHT; + } + + + if (flags & WSP_VERT) { + layout = FR_ROW; + + /* + * Check if we are able to split the current window and compute its + * width. + */ + needed = p_wmw + 1; + if (flags & WSP_ROOM) + needed += p_wiw - p_wmw; + if (p_ea || (flags & (WSP_BOT | WSP_TOP))) { + available = topframe->fr_width; + needed += frame_minwidth(topframe, NULL); + } else + available = oldwin->w_width; + if (available < needed && new_wp == NULL) { + EMSG(_(e_noroom)); + return FAIL; + } + if (new_size == 0) + new_size = oldwin->w_width / 2; + if (new_size > oldwin->w_width - p_wmw - 1) + new_size = oldwin->w_width - p_wmw - 1; + if (new_size < p_wmw) + new_size = p_wmw; + + /* if it doesn't fit in the current window, need win_equal() */ + if (oldwin->w_width - new_size - 1 < p_wmw) + do_equal = TRUE; + + /* We don't like to take lines for the new window from a + * 'winfixwidth' window. Take them from a window to the left or right + * instead, if possible. */ + if (oldwin->w_p_wfw) + win_setwidth_win(oldwin->w_width + new_size, oldwin); + + /* Only make all windows the same width if one of them (except oldwin) + * is wider than one of the split windows. */ + if (!do_equal && p_ea && size == 0 && *p_ead != 'v' + && oldwin->w_frame->fr_parent != NULL) { + frp = oldwin->w_frame->fr_parent->fr_child; + while (frp != NULL) { + if (frp->fr_win != oldwin && frp->fr_win != NULL + && (frp->fr_win->w_width > new_size + || frp->fr_win->w_width > oldwin->w_width + - new_size - STATUS_HEIGHT)) { + do_equal = TRUE; + break; + } + frp = frp->fr_next; + } + } + } else { + layout = FR_COL; + + /* + * Check if we are able to split the current window and compute its + * height. + */ + needed = p_wmh + STATUS_HEIGHT + need_status; + if (flags & WSP_ROOM) + needed += p_wh - p_wmh; + if (p_ea || (flags & (WSP_BOT | WSP_TOP))) { + available = topframe->fr_height; + needed += frame_minheight(topframe, NULL); + } else { + available = oldwin->w_height; + needed += p_wmh; + } + if (available < needed && new_wp == NULL) { + EMSG(_(e_noroom)); + return FAIL; + } + oldwin_height = oldwin->w_height; + if (need_status) { + oldwin->w_status_height = STATUS_HEIGHT; + oldwin_height -= STATUS_HEIGHT; + } + if (new_size == 0) + new_size = oldwin_height / 2; + + if (new_size > oldwin_height - p_wmh - STATUS_HEIGHT) + new_size = oldwin_height - p_wmh - STATUS_HEIGHT; + if (new_size < p_wmh) + new_size = p_wmh; + + /* if it doesn't fit in the current window, need win_equal() */ + if (oldwin_height - new_size - STATUS_HEIGHT < p_wmh) + do_equal = TRUE; + + /* We don't like to take lines for the new window from a + * 'winfixheight' window. Take them from a window above or below + * instead, if possible. */ + if (oldwin->w_p_wfh) { + win_setheight_win(oldwin->w_height + new_size + STATUS_HEIGHT, + oldwin); + oldwin_height = oldwin->w_height; + if (need_status) + oldwin_height -= STATUS_HEIGHT; + } + + /* Only make all windows the same height if one of them (except oldwin) + * is higher than one of the split windows. */ + if (!do_equal && p_ea && size == 0 + && *p_ead != 'h' + && oldwin->w_frame->fr_parent != NULL) { + frp = oldwin->w_frame->fr_parent->fr_child; + while (frp != NULL) { + if (frp->fr_win != oldwin && frp->fr_win != NULL + && (frp->fr_win->w_height > new_size + || frp->fr_win->w_height > oldwin_height - new_size + - STATUS_HEIGHT)) { + do_equal = TRUE; + break; + } + frp = frp->fr_next; + } + } + } + + /* + * allocate new window structure and link it in the window list + */ + if ((flags & WSP_TOP) == 0 + && ((flags & WSP_BOT) + || (flags & WSP_BELOW) + || (!(flags & WSP_ABOVE) + && ( + (flags & WSP_VERT) ? p_spr : + p_sb)))) { + /* new window below/right of current one */ + if (new_wp == NULL) + wp = win_alloc(oldwin, FALSE); + else + win_append(oldwin, wp); + } else { + if (new_wp == NULL) + wp = win_alloc(oldwin->w_prev, FALSE); + else + win_append(oldwin->w_prev, wp); + } + + if (new_wp == NULL) { + if (wp == NULL) + return FAIL; + + new_frame(wp); + + /* make the contents of the new window the same as the current one */ + win_init(wp, curwin, flags); + } + + /* + * Reorganise the tree of frames to insert the new window. + */ + if (flags & (WSP_TOP | WSP_BOT)) { + if ((topframe->fr_layout == FR_COL && (flags & WSP_VERT) == 0) + || (topframe->fr_layout == FR_ROW && (flags & WSP_VERT) != 0)) { + curfrp = topframe->fr_child; + if (flags & WSP_BOT) + while (curfrp->fr_next != NULL) + curfrp = curfrp->fr_next; + } else + curfrp = topframe; + before = (flags & WSP_TOP); + } else { + curfrp = oldwin->w_frame; + if (flags & WSP_BELOW) + before = FALSE; + else if (flags & WSP_ABOVE) + before = TRUE; + else if (flags & WSP_VERT) + before = !p_spr; + else + before = !p_sb; + } + if (curfrp->fr_parent == NULL || curfrp->fr_parent->fr_layout != layout) { + /* Need to create a new frame in the tree to make a branch. */ + frp = xcalloc(1, sizeof(frame_T)); + *frp = *curfrp; + curfrp->fr_layout = layout; + frp->fr_parent = curfrp; + frp->fr_next = NULL; + frp->fr_prev = NULL; + curfrp->fr_child = frp; + curfrp->fr_win = NULL; + curfrp = frp; + if (frp->fr_win != NULL) + oldwin->w_frame = frp; + else + for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next) + frp->fr_parent = curfrp; + } + + if (new_wp == NULL) + frp = wp->w_frame; + else + frp = new_wp->w_frame; + frp->fr_parent = curfrp->fr_parent; + + /* Insert the new frame at the right place in the frame list. */ + if (before) + frame_insert(curfrp, frp); + else + frame_append(curfrp, frp); + + /* Set w_fraction now so that the cursor keeps the same relative + * vertical position. */ + if (oldwin->w_height > 0) + set_fraction(oldwin); + wp->w_fraction = oldwin->w_fraction; + + if (flags & WSP_VERT) { + wp->w_p_scr = curwin->w_p_scr; + + if (need_status) { + win_new_height(oldwin, oldwin->w_height - 1); + oldwin->w_status_height = need_status; + } + if (flags & (WSP_TOP | WSP_BOT)) { + /* set height and row of new window to full height */ + wp->w_winrow = tabline_height(); + win_new_height(wp, curfrp->fr_height - (p_ls > 0)); + wp->w_status_height = (p_ls > 0); + } else { + /* height and row of new window is same as current window */ + wp->w_winrow = oldwin->w_winrow; + win_new_height(wp, oldwin->w_height); + wp->w_status_height = oldwin->w_status_height; + } + frp->fr_height = curfrp->fr_height; + + /* "new_size" of the current window goes to the new window, use + * one column for the vertical separator */ + win_new_width(wp, new_size); + if (before) + wp->w_vsep_width = 1; + else { + wp->w_vsep_width = oldwin->w_vsep_width; + oldwin->w_vsep_width = 1; + } + if (flags & (WSP_TOP | WSP_BOT)) { + if (flags & WSP_BOT) + frame_add_vsep(curfrp); + /* Set width of neighbor frame */ + frame_new_width(curfrp, curfrp->fr_width + - (new_size + ((flags & WSP_TOP) != 0)), flags & WSP_TOP, + FALSE); + } else + win_new_width(oldwin, oldwin->w_width - (new_size + 1)); + if (before) { /* new window left of current one */ + wp->w_wincol = oldwin->w_wincol; + oldwin->w_wincol += new_size + 1; + } else /* new window right of current one */ + wp->w_wincol = oldwin->w_wincol + oldwin->w_width + 1; + frame_fix_width(oldwin); + frame_fix_width(wp); + } else { + /* width and column of new window is same as current window */ + if (flags & (WSP_TOP | WSP_BOT)) { + wp->w_wincol = 0; + win_new_width(wp, Columns); + wp->w_vsep_width = 0; + } else { + wp->w_wincol = oldwin->w_wincol; + win_new_width(wp, oldwin->w_width); + wp->w_vsep_width = oldwin->w_vsep_width; + } + frp->fr_width = curfrp->fr_width; + + /* "new_size" of the current window goes to the new window, use + * one row for the status line */ + win_new_height(wp, new_size); + if (flags & (WSP_TOP | WSP_BOT)) + frame_new_height(curfrp, curfrp->fr_height + - (new_size + STATUS_HEIGHT), flags & WSP_TOP, FALSE); + else + win_new_height(oldwin, oldwin_height - (new_size + STATUS_HEIGHT)); + if (before) { /* new window above current one */ + wp->w_winrow = oldwin->w_winrow; + wp->w_status_height = STATUS_HEIGHT; + oldwin->w_winrow += wp->w_height + STATUS_HEIGHT; + } else { /* new window below current one */ + wp->w_winrow = oldwin->w_winrow + oldwin->w_height + STATUS_HEIGHT; + wp->w_status_height = oldwin->w_status_height; + oldwin->w_status_height = STATUS_HEIGHT; + } + if (flags & WSP_BOT) + frame_add_statusline(curfrp); + frame_fix_height(wp); + frame_fix_height(oldwin); + } + + if (flags & (WSP_TOP | WSP_BOT)) + (void)win_comp_pos(); + + /* + * Both windows need redrawing + */ + redraw_win_later(wp, NOT_VALID); + wp->w_redr_status = TRUE; + redraw_win_later(oldwin, NOT_VALID); + oldwin->w_redr_status = TRUE; + + if (need_status) { + msg_row = Rows - 1; + msg_col = sc_col; + msg_clr_eos_force(); /* Old command/ruler may still be there */ + comp_col(); + msg_row = Rows - 1; + msg_col = 0; /* put position back at start of line */ + } + + /* + * equalize the window sizes. + */ + if (do_equal || dir != 0) + win_equal(wp, TRUE, + (flags & WSP_VERT) ? (dir == 'v' ? 'b' : 'h') + : dir == 'h' ? 'b' : + 'v'); + + /* Don't change the window height/width to 'winheight' / 'winwidth' if a + * size was given. */ + if (flags & WSP_VERT) { + i = p_wiw; + if (size != 0) + p_wiw = size; + + } else { + i = p_wh; + if (size != 0) + p_wh = size; + } + + /* + * make the new window the current window + */ + win_enter(wp, FALSE); + if (flags & WSP_VERT) + p_wiw = i; + else + p_wh = i; + + return OK; +} + + +/* + * Initialize window "newp" from window "oldp". + * Used when splitting a window and when creating a new tab page. + * The windows will both edit the same buffer. + * WSP_NEWLOC may be specified in flags to prevent the location list from + * being copied. + */ +static void win_init(win_T *newp, win_T *oldp, int flags) +{ + int i; + + newp->w_buffer = oldp->w_buffer; + newp->w_s = &(oldp->w_buffer->b_s); + oldp->w_buffer->b_nwindows++; + newp->w_cursor = oldp->w_cursor; + newp->w_valid = 0; + newp->w_curswant = oldp->w_curswant; + newp->w_set_curswant = oldp->w_set_curswant; + newp->w_topline = oldp->w_topline; + newp->w_topfill = oldp->w_topfill; + newp->w_leftcol = oldp->w_leftcol; + newp->w_pcmark = oldp->w_pcmark; + newp->w_prev_pcmark = oldp->w_prev_pcmark; + newp->w_alt_fnum = oldp->w_alt_fnum; + newp->w_wrow = oldp->w_wrow; + newp->w_fraction = oldp->w_fraction; + newp->w_prev_fraction_row = oldp->w_prev_fraction_row; + copy_jumplist(oldp, newp); + if (flags & WSP_NEWLOC) { + /* Don't copy the location list. */ + newp->w_llist = NULL; + newp->w_llist_ref = NULL; + } else + copy_loclist(oldp, newp); + newp->w_localdir = (oldp->w_localdir == NULL) + ? NULL : vim_strsave(oldp->w_localdir); + + /* copy tagstack and folds */ + for (i = 0; i < oldp->w_tagstacklen; i++) { + newp->w_tagstack[i] = oldp->w_tagstack[i]; + if (newp->w_tagstack[i].tagname != NULL) + newp->w_tagstack[i].tagname = + vim_strsave(newp->w_tagstack[i].tagname); + } + newp->w_tagstackidx = oldp->w_tagstackidx; + newp->w_tagstacklen = oldp->w_tagstacklen; + copyFoldingState(oldp, newp); + + win_init_some(newp, oldp); + + check_colorcolumn(newp); +} + +/* + * Initialize window "newp" from window"old". + * Only the essential things are copied. + */ +static void win_init_some(win_T *newp, win_T *oldp) +{ + /* Use the same argument list. */ + newp->w_alist = oldp->w_alist; + ++newp->w_alist->al_refcount; + newp->w_arg_idx = oldp->w_arg_idx; + + /* copy options from existing window */ + win_copy_options(oldp, newp); +} + + +/* + * Check if "win" is a pointer to an existing window. + */ +int win_valid(win_T *win) +{ + win_T *wp; + + if (win == NULL) + return FALSE; + for (wp = firstwin; wp != NULL; wp = wp->w_next) + if (wp == win) + return TRUE; + return FALSE; +} + +/* + * Return the number of windows. + */ +int win_count(void) +{ + win_T *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 ( + int count, + int vertical /* split windows vertically if TRUE */ +) +{ + int maxcount; + int todo; + + if (vertical) { + /* Each windows needs at least 'winminwidth' lines and a separator + * column. */ + maxcount = (curwin->w_width + curwin->w_vsep_width + - (p_wiw - p_wmw)) / (p_wmw + 1); + } else { + /* Each window needs at least 'winminheight' lines and a status line. */ + maxcount = (curwin->w_height + curwin->w_status_height + - (p_wh - p_wmh)) / (p_wmh + STATUS_HEIGHT); + } + + if (maxcount < 2) + maxcount = 2; + if (count > maxcount) + count = maxcount; + + /* + * add status line now, otherwise first window will be too big + */ + if (count > 1) + last_status(TRUE); + + /* + * Don't execute autocommands while creating the windows. Must do that + * when putting the buffers in the windows. + */ + block_autocmds(); + + /* todo is number of windows left to create */ + for (todo = count - 1; todo > 0; --todo) + if (vertical) { + if (win_split(curwin->w_width - (curwin->w_width - todo) + / (todo + 1) - 1, WSP_VERT | WSP_ABOVE) == FAIL) + break; + } else { + if (win_split(curwin->w_height - (curwin->w_height - todo + * STATUS_HEIGHT) / (todo + 1) + - STATUS_HEIGHT, WSP_ABOVE) == FAIL) + break; + } + + unblock_autocmds(); + + /* return actual number of windows */ + return count - todo; +} + +/* + * Exchange current and next window + */ +static void win_exchange(long Prenum) +{ + frame_T *frp; + frame_T *frp2; + win_T *wp; + win_T *wp2; + int temp; + + if (lastwin == firstwin) { /* just one window */ + beep_flush(); + return; + } + + + /* + * find window to exchange with + */ + if (Prenum) { + frp = curwin->w_frame->fr_parent->fr_child; + while (frp != NULL && --Prenum > 0) + frp = frp->fr_next; + } else if (curwin->w_frame->fr_next != NULL) /* Swap with next */ + frp = curwin->w_frame->fr_next; + else /* Swap last window in row/col with previous */ + frp = curwin->w_frame->fr_prev; + + /* We can only exchange a window with another window, not with a frame + * containing windows. */ + if (frp == NULL || frp->fr_win == NULL || frp->fr_win == curwin) + return; + wp = frp->fr_win; + + /* + * 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 and vsep width. + */ + wp2 = curwin->w_prev; + frp2 = curwin->w_frame->fr_prev; + if (wp->w_prev != curwin) { + win_remove(curwin, NULL); + frame_remove(curwin->w_frame); + win_append(wp->w_prev, curwin); + frame_insert(frp, curwin->w_frame); + } + if (wp != wp2) { + win_remove(wp, NULL); + frame_remove(wp->w_frame); + win_append(wp2, wp); + if (frp2 == NULL) + frame_insert(wp->w_frame->fr_parent->fr_child, wp->w_frame); + else + frame_append(frp2, wp->w_frame); + } + temp = curwin->w_status_height; + curwin->w_status_height = wp->w_status_height; + wp->w_status_height = temp; + temp = curwin->w_vsep_width; + curwin->w_vsep_width = wp->w_vsep_width; + wp->w_vsep_width = temp; + + /* If the windows are not in the same frame, exchange the sizes to avoid + * messing up the window layout. Otherwise fix the frame sizes. */ + if (curwin->w_frame->fr_parent != wp->w_frame->fr_parent) { + temp = curwin->w_height; + curwin->w_height = wp->w_height; + wp->w_height = temp; + temp = curwin->w_width; + curwin->w_width = wp->w_width; + wp->w_width = temp; + } else { + frame_fix_height(curwin); + frame_fix_height(wp); + frame_fix_width(curwin); + frame_fix_width(wp); + } + + (void)win_comp_pos(); /* recompute window positions */ + + win_enter(wp, TRUE); + redraw_later(CLEAR); +} + +/* + * 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(int upwards, int count) +{ + win_T *wp1; + win_T *wp2; + frame_T *frp; + int n; + + if (firstwin == lastwin) { /* nothing to do */ + beep_flush(); + return; + } + + + /* Check if all frames in this row/col have one window. */ + for (frp = curwin->w_frame->fr_parent->fr_child; frp != NULL; + frp = frp->fr_next) + if (frp->fr_win == NULL) { + EMSG(_("E443: Cannot rotate when another window is split")); + return; + } + + while (count--) { + if (upwards) { /* first window becomes last window */ + /* remove first window/frame from the list */ + frp = curwin->w_frame->fr_parent->fr_child; + wp1 = frp->fr_win; + win_remove(wp1, NULL); + frame_remove(frp); + + /* find last frame and append removed window/frame after it */ + for (; frp->fr_next != NULL; frp = frp->fr_next) + ; + win_append(frp->fr_win, wp1); + frame_append(frp, wp1->w_frame); + + wp2 = frp->fr_win; /* previously last window */ + } else { /* last window becomes first window */ + /* find last window/frame in the list and remove it */ + for (frp = curwin->w_frame; frp->fr_next != NULL; + frp = frp->fr_next) + ; + wp1 = frp->fr_win; + wp2 = wp1->w_prev; /* will become last window */ + win_remove(wp1, NULL); + frame_remove(frp); + + /* append the removed window/frame before the first in the list */ + win_append(frp->fr_parent->fr_child->fr_win->w_prev, wp1); + frame_insert(frp->fr_parent->fr_child, frp); + } + + /* exchange status height and vsep width of old and new last window */ + n = wp2->w_status_height; + wp2->w_status_height = wp1->w_status_height; + wp1->w_status_height = n; + frame_fix_height(wp1); + frame_fix_height(wp2); + n = wp2->w_vsep_width; + wp2->w_vsep_width = wp1->w_vsep_width; + wp1->w_vsep_width = n; + frame_fix_width(wp1); + frame_fix_width(wp2); + + /* recompute w_winrow and w_wincol for all windows */ + (void)win_comp_pos(); + } + + redraw_later(CLEAR); +} + +/* + * Move the current window to the very top/bottom/left/right of the screen. + */ +static void win_totop(int size, int flags) +{ + int dir; + int height = curwin->w_height; + + if (lastwin == firstwin) { + beep_flush(); + return; + } + + /* Remove the window and frame from the tree of frames. */ + (void)winframe_remove(curwin, &dir, NULL); + win_remove(curwin, NULL); + last_status(FALSE); /* may need to remove last status line */ + (void)win_comp_pos(); /* recompute window positions */ + + /* Split a window on the desired side and put the window there. */ + (void)win_split_ins(size, flags, curwin, dir); + if (!(flags & WSP_VERT)) { + win_setheight(height); + if (p_ea) + win_equal(curwin, TRUE, 'v'); + } + +} + +/* + * Move window "win1" to below/right of "win2" and make "win1" the current + * window. Only works within the same frame! + */ +void win_move_after(win_T *win1, win_T *win2) +{ + int height; + + /* check if the arguments are reasonable */ + if (win1 == win2) + return; + + /* check if there is something to do */ + if (win2->w_next != win1) { + /* may need move the status line/vertical separator of the last window + * */ + if (win1 == lastwin) { + height = win1->w_prev->w_status_height; + win1->w_prev->w_status_height = win1->w_status_height; + win1->w_status_height = height; + if (win1->w_prev->w_vsep_width == 1) { + /* Remove the vertical separator from the last-but-one window, + * add it to the last window. Adjust the frame widths. */ + win1->w_prev->w_vsep_width = 0; + win1->w_prev->w_frame->fr_width -= 1; + win1->w_vsep_width = 1; + win1->w_frame->fr_width += 1; + } + } else if (win2 == lastwin) { + height = win1->w_status_height; + win1->w_status_height = win2->w_status_height; + win2->w_status_height = height; + if (win1->w_vsep_width == 1) { + /* Remove the vertical separator from win1, add it to the last + * window, win2. Adjust the frame widths. */ + win2->w_vsep_width = 1; + win2->w_frame->fr_width += 1; + win1->w_vsep_width = 0; + win1->w_frame->fr_width -= 1; + } + } + win_remove(win1, NULL); + frame_remove(win1->w_frame); + win_append(win2, win1); + frame_append(win2->w_frame, win1->w_frame); + + (void)win_comp_pos(); /* recompute w_winrow for all windows */ + redraw_later(NOT_VALID); + } + win_enter(win1, FALSE); +} + +/* + * Make all windows the same height. + * 'next_curwin' will soon be the current window, make sure it has enough + * rows. + */ +void +win_equal ( + win_T *next_curwin, /* pointer to current window to be or NULL */ + int current, /* do only frame with current window */ + int dir /* 'v' for vertically, 'h' for horizontally, + 'b' for both, 0 for using p_ead */ +) +{ + if (dir == 0) + dir = *p_ead; + win_equal_rec(next_curwin == NULL ? curwin : next_curwin, current, + topframe, dir, 0, tabline_height(), + (int)Columns, topframe->fr_height); +} + +/* + * Set a frame to a new position and height, spreading the available room + * equally over contained frames. + * The window "next_curwin" (if not NULL) should at least get the size from + * 'winheight' and 'winwidth' if possible. + */ +static void +win_equal_rec ( + win_T *next_curwin, /* pointer to current window to be or NULL */ + int current, /* do only frame with current window */ + frame_T *topfr, /* frame to set size off */ + int dir, /* 'v', 'h' or 'b', see win_equal() */ + int col, /* horizontal position for frame */ + int row, /* vertical position for frame */ + int width, /* new width of frame */ + int height /* new height of frame */ +) +{ + int n, m; + int extra_sep = 0; + int wincount, totwincount = 0; + frame_T *fr; + int next_curwin_size = 0; + int room = 0; + int new_size; + int has_next_curwin = 0; + int hnc; + + if (topfr->fr_layout == FR_LEAF) { + /* Set the width/height of this frame. + * Redraw when size or position changes */ + if (topfr->fr_height != height || topfr->fr_win->w_winrow != row + || topfr->fr_width != width || topfr->fr_win->w_wincol != col + ) { + topfr->fr_win->w_winrow = row; + frame_new_height(topfr, height, FALSE, FALSE); + topfr->fr_win->w_wincol = col; + frame_new_width(topfr, width, FALSE, FALSE); + redraw_all_later(CLEAR); + } + } else if (topfr->fr_layout == FR_ROW) { + topfr->fr_width = width; + topfr->fr_height = height; + + if (dir != 'v') { /* equalize frame widths */ + /* Compute the maximum number of windows horizontally in this + * frame. */ + n = frame_minwidth(topfr, NOWIN); + /* add one for the rightmost window, it doesn't have a separator */ + if (col + width == Columns) + extra_sep = 1; + else + extra_sep = 0; + totwincount = (n + extra_sep) / (p_wmw + 1); + has_next_curwin = frame_has_win(topfr, next_curwin); + + /* + * Compute width for "next_curwin" window and room available for + * other windows. + * "m" is the minimal width when counting p_wiw for "next_curwin". + */ + m = frame_minwidth(topfr, next_curwin); + room = width - m; + if (room < 0) { + next_curwin_size = p_wiw + room; + room = 0; + } else { + next_curwin_size = -1; + for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next) { + /* If 'winfixwidth' set keep the window width if + * possible. + * Watch out for this window being the next_curwin. */ + if (frame_fixed_width(fr)) { + n = frame_minwidth(fr, NOWIN); + new_size = fr->fr_width; + if (frame_has_win(fr, next_curwin)) { + room += p_wiw - p_wmw; + next_curwin_size = 0; + if (new_size < p_wiw) + new_size = p_wiw; + } else + /* These windows don't use up room. */ + totwincount -= (n + (fr->fr_next == NULL + ? extra_sep : 0)) / (p_wmw + 1); + room -= new_size - n; + if (room < 0) { + new_size += room; + room = 0; + } + fr->fr_newwidth = new_size; + } + } + if (next_curwin_size == -1) { + if (!has_next_curwin) + next_curwin_size = 0; + else if (totwincount > 1 + && (room + (totwincount - 2)) + / (totwincount - 1) > p_wiw) { + /* Can make all windows wider than 'winwidth', spread + * the room equally. */ + next_curwin_size = (room + p_wiw + + (totwincount - 1) * p_wmw + + (totwincount - 1)) / totwincount; + room -= next_curwin_size - p_wiw; + } else + next_curwin_size = p_wiw; + } + } + + if (has_next_curwin) + --totwincount; /* don't count curwin */ + } + + for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next) { + n = m = 0; + wincount = 1; + if (fr->fr_next == NULL) + /* last frame gets all that remains (avoid roundoff error) */ + new_size = width; + else if (dir == 'v') + new_size = fr->fr_width; + else if (frame_fixed_width(fr)) { + new_size = fr->fr_newwidth; + wincount = 0; /* doesn't count as a sizeable window */ + } else { + /* Compute the maximum number of windows horiz. in "fr". */ + n = frame_minwidth(fr, NOWIN); + wincount = (n + (fr->fr_next == NULL ? extra_sep : 0)) + / (p_wmw + 1); + m = frame_minwidth(fr, next_curwin); + if (has_next_curwin) + hnc = frame_has_win(fr, next_curwin); + else + hnc = FALSE; + if (hnc) /* don't count next_curwin */ + --wincount; + if (totwincount == 0) + new_size = room; + else + new_size = (wincount * room + (totwincount / 2)) / totwincount; + if (hnc) { /* add next_curwin size */ + next_curwin_size -= p_wiw - (m - n); + new_size += next_curwin_size; + room -= new_size - next_curwin_size; + } else + room -= new_size; + new_size += n; + } + + /* Skip frame that is full width when splitting or closing a + * window, unless equalizing all frames. */ + if (!current || dir != 'v' || topfr->fr_parent != NULL + || (new_size != fr->fr_width) + || frame_has_win(fr, next_curwin)) + win_equal_rec(next_curwin, current, fr, dir, col, row, + new_size, height); + col += new_size; + width -= new_size; + totwincount -= wincount; + } + } else { /* topfr->fr_layout == FR_COL */ + topfr->fr_width = width; + topfr->fr_height = height; + + if (dir != 'h') { /* equalize frame heights */ + /* Compute maximum number of windows vertically in this frame. */ + n = frame_minheight(topfr, NOWIN); + /* add one for the bottom window if it doesn't have a statusline */ + if (row + height == cmdline_row && p_ls == 0) + extra_sep = 1; + else + extra_sep = 0; + totwincount = (n + extra_sep) / (p_wmh + 1); + has_next_curwin = frame_has_win(topfr, next_curwin); + + /* + * Compute height for "next_curwin" window and room available for + * other windows. + * "m" is the minimal height when counting p_wh for "next_curwin". + */ + m = frame_minheight(topfr, next_curwin); + room = height - m; + if (room < 0) { + /* The room is less then 'winheight', use all space for the + * current window. */ + next_curwin_size = p_wh + room; + room = 0; + } else { + next_curwin_size = -1; + for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next) { + /* If 'winfixheight' set keep the window height if + * possible. + * Watch out for this window being the next_curwin. */ + if (frame_fixed_height(fr)) { + n = frame_minheight(fr, NOWIN); + new_size = fr->fr_height; + if (frame_has_win(fr, next_curwin)) { + room += p_wh - p_wmh; + next_curwin_size = 0; + if (new_size < p_wh) + new_size = p_wh; + } else + /* These windows don't use up room. */ + totwincount -= (n + (fr->fr_next == NULL + ? extra_sep : 0)) / (p_wmh + 1); + room -= new_size - n; + if (room < 0) { + new_size += room; + room = 0; + } + fr->fr_newheight = new_size; + } + } + if (next_curwin_size == -1) { + if (!has_next_curwin) + next_curwin_size = 0; + else if (totwincount > 1 + && (room + (totwincount - 2)) + / (totwincount - 1) > p_wh) { + /* can make all windows higher than 'winheight', + * spread the room equally. */ + next_curwin_size = (room + p_wh + + (totwincount - 1) * p_wmh + + (totwincount - 1)) / totwincount; + room -= next_curwin_size - p_wh; + } else + next_curwin_size = p_wh; + } + } + + if (has_next_curwin) + --totwincount; /* don't count curwin */ + } + + for (fr = topfr->fr_child; fr != NULL; fr = fr->fr_next) { + n = m = 0; + wincount = 1; + if (fr->fr_next == NULL) + /* last frame gets all that remains (avoid roundoff error) */ + new_size = height; + else if (dir == 'h') + new_size = fr->fr_height; + else if (frame_fixed_height(fr)) { + new_size = fr->fr_newheight; + wincount = 0; /* doesn't count as a sizeable window */ + } else { + /* Compute the maximum number of windows vert. in "fr". */ + n = frame_minheight(fr, NOWIN); + wincount = (n + (fr->fr_next == NULL ? extra_sep : 0)) + / (p_wmh + 1); + m = frame_minheight(fr, next_curwin); + if (has_next_curwin) + hnc = frame_has_win(fr, next_curwin); + else + hnc = FALSE; + if (hnc) /* don't count next_curwin */ + --wincount; + if (totwincount == 0) + new_size = room; + else + new_size = (wincount * room + (totwincount / 2)) / totwincount; + if (hnc) { /* add next_curwin size */ + next_curwin_size -= p_wh - (m - n); + new_size += next_curwin_size; + room -= new_size - next_curwin_size; + } else + room -= new_size; + new_size += n; + } + /* Skip frame that is full width when splitting or closing a + * window, unless equalizing all frames. */ + if (!current || dir != 'h' || topfr->fr_parent != NULL + || (new_size != fr->fr_height) + || frame_has_win(fr, next_curwin)) + win_equal_rec(next_curwin, current, fr, dir, col, row, + width, new_size); + row += new_size; + height -= new_size; + totwincount -= wincount; + } + } +} + +/* + * close all windows for buffer 'buf' + */ +void +close_windows ( + buf_T *buf, + int keep_curwin /* don't close "curwin" */ +) +{ + win_T *wp; + tabpage_T *tp, *nexttp; + int h = tabline_height(); + + ++RedrawingDisabled; + + for (wp = firstwin; wp != NULL && lastwin != firstwin; ) { + if (wp->w_buffer == buf && (!keep_curwin || wp != curwin) + && !(wp->w_closing || wp->w_buffer->b_closing) + ) { + win_close(wp, FALSE); + + /* Start all over, autocommands may change the window layout. */ + wp = firstwin; + } else + wp = wp->w_next; + } + + /* Also check windows in other tab pages. */ + for (tp = first_tabpage; tp != NULL; tp = nexttp) { + nexttp = tp->tp_next; + if (tp != curtab) + for (wp = tp->tp_firstwin; wp != NULL; wp = wp->w_next) + if (wp->w_buffer == buf + && !(wp->w_closing || wp->w_buffer->b_closing) + ) { + win_close_othertab(wp, FALSE, tp); + + /* Start all over, the tab page may be closed and + * autocommands may change the window layout. */ + nexttp = first_tabpage; + break; + } + } + + --RedrawingDisabled; + + redraw_tabline = TRUE; + if (h != tabline_height()) + shell_new_rows(); +} + +/* + * Return TRUE if the current window is the only window that exists (ignoring + * "aucmd_win"). + * Returns FALSE if there is a window, possibly in another tab page. + */ +static int last_window(void) +{ + return one_window() && first_tabpage->tp_next == NULL; +} + +/* + * Return TRUE if there is only one window other than "aucmd_win" in the + * current tab page. + */ +int one_window(void) +{ + win_T *wp; + int seen_one = FALSE; + + FOR_ALL_WINDOWS(wp) + { + if (wp != aucmd_win) { + if (seen_one) + return FALSE; + seen_one = TRUE; + } + } + return TRUE; +} + +/* + * Close the possibly last window in a tab page. + * Returns TRUE when the window was closed already. + */ +static int close_last_window_tabpage(win_T *win, int free_buf, tabpage_T *prev_curtab) +{ + if (firstwin == lastwin) { + buf_T *old_curbuf = curbuf; + + /* + * Closing the last window in a tab page. First go to another tab + * page and then close the window and the tab page. This avoids that + * curwin and curtab are invalid while we are freeing memory, they may + * be used in GUI events. + * Don't trigger autocommands yet, they may use wrong values, so do + * that below. + */ + goto_tabpage_tp(alt_tabpage(), FALSE, TRUE); + redraw_tabline = TRUE; + + /* Safety check: Autocommands may have closed the window when jumping + * to the other tab page. */ + if (valid_tabpage(prev_curtab) && prev_curtab->tp_firstwin == win) { + int h = tabline_height(); + + win_close_othertab(win, free_buf, prev_curtab); + if (h != tabline_height()) + shell_new_rows(); + } + /* Since goto_tabpage_tp above did not trigger *Enter autocommands, do + * that now. */ + apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf); + apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf); + if (old_curbuf != curbuf) + apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf); + return TRUE; + } + return FALSE; +} + +/* + * Close window "win". Only works for the current tab page. + * If "free_buf" is TRUE related buffer may be unloaded. + * + * Called by :quit, :close, :xit, :wq and findtag(). + * Returns FAIL when the window was not closed. + */ +int win_close(win_T *win, int free_buf) +{ + win_T *wp; + int other_buffer = FALSE; + int close_curwin = FALSE; + int dir; + int help_window = FALSE; + tabpage_T *prev_curtab = curtab; + + if (last_window()) { + EMSG(_("E444: Cannot close last window")); + return FAIL; + } + + if (win->w_closing || (win->w_buffer != NULL && win->w_buffer->b_closing)) + return FAIL; /* window is already being closed */ + if (win == aucmd_win) { + EMSG(_("E813: Cannot close autocmd window")); + return FAIL; + } + if ((firstwin == aucmd_win || lastwin == aucmd_win) && one_window()) { + EMSG(_("E814: Cannot close window, only autocmd window would remain")); + return FAIL; + } + + /* When closing the last window in a tab page first go to another tab page + * and then close the window and the tab page to avoid that curwin and + * curtab are invalid while we are freeing memory. */ + if (close_last_window_tabpage(win, free_buf, prev_curtab)) + return FAIL; + + /* When closing the help window, try restoring a snapshot after closing + * the window. Otherwise clear the snapshot, it's now invalid. */ + if (win->w_buffer != NULL && win->w_buffer->b_help) + help_window = TRUE; + else + clear_snapshot(curtab, SNAP_HELP_IDX); + + if (win == curwin) { + /* + * Guess which window is going to be the new current window. + * This may change because of the autocommands (sigh). + */ + wp = frame2win(win_altframe(win, NULL)); + + /* + * Be careful: If autocommands delete the window or cause this window + * to be the last one left, return now. + */ + if (wp->w_buffer != curbuf) { + other_buffer = TRUE; + win->w_closing = TRUE; + apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf); + if (!win_valid(win)) + return FAIL; + win->w_closing = FALSE; + if (last_window()) + return FAIL; + } + win->w_closing = TRUE; + apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf); + if (!win_valid(win)) + return FAIL; + win->w_closing = FALSE; + if (last_window()) + return FAIL; + /* autocmds may abort script processing */ + if (aborting()) + return FAIL; + } + + + /* Free independent synblock before the buffer is freed. */ + if (win->w_buffer != NULL) + reset_synblock(win); + + /* + * Close the link to the buffer. + */ + if (win->w_buffer != NULL) { + win->w_closing = TRUE; + close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0, TRUE); + if (win_valid(win)) + win->w_closing = FALSE; + } + + if (only_one_window() && win_valid(win) && win->w_buffer == NULL + && (last_window() || curtab != prev_curtab + || close_last_window_tabpage(win, free_buf, prev_curtab))) { + /* Autocommands have close all windows, quit now. Restore + * curwin->w_buffer, otherwise writing viminfo may fail. */ + if (curwin->w_buffer == NULL) + curwin->w_buffer = curbuf; + getout(0); + } + /* Autocommands may have closed the window already, or closed the only + * other window or moved to another tab page. */ + else if (!win_valid(win) || last_window() || curtab != prev_curtab + || close_last_window_tabpage(win, free_buf, prev_curtab)) + return FAIL; + + /* Free the memory used for the window and get the window that received + * the screen space. */ + wp = win_free_mem(win, &dir, NULL); + + /* Make sure curwin isn't invalid. It can cause severe trouble when + * printing an error message. For win_equal() curbuf needs to be valid + * too. */ + if (win == curwin) { + curwin = wp; + if (wp->w_p_pvw || bt_quickfix(wp->w_buffer)) { + /* + * If the cursor goes to the preview or the quickfix window, try + * finding another window to go to. + */ + for (;; ) { + if (wp->w_next == NULL) + wp = firstwin; + else + wp = wp->w_next; + if (wp == curwin) + break; + if (!wp->w_p_pvw && !bt_quickfix(wp->w_buffer)) { + curwin = wp; + break; + } + } + } + curbuf = curwin->w_buffer; + close_curwin = TRUE; + } + if (p_ea + && (*p_ead == 'b' || *p_ead == dir) + ) + win_equal(curwin, TRUE, + dir + ); + else + win_comp_pos(); + if (close_curwin) { + win_enter_ext(wp, FALSE, TRUE, TRUE, TRUE); + if (other_buffer) + /* careful: after this wp and win may be invalid! */ + apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf); + } + + /* + * If last window has a status line now and we don't want one, + * remove the status line. + */ + last_status(FALSE); + + /* After closing the help window, try restoring the window layout from + * before it was opened. */ + if (help_window) + restore_snapshot(SNAP_HELP_IDX, close_curwin); + + + redraw_all_later(NOT_VALID); + return OK; +} + +/* + * Close window "win" in tab page "tp", which is not the current tab page. + * This may be the last window in that tab page and result in closing the tab, + * thus "tp" may become invalid! + * Caller must check if buffer is hidden and whether the tabline needs to be + * updated. + */ +void win_close_othertab(win_T *win, int free_buf, tabpage_T *tp) +{ + win_T *wp; + int dir; + tabpage_T *ptp = NULL; + int free_tp = FALSE; + + if (win->w_closing || win->w_buffer->b_closing) + return; /* window is already being closed */ + + /* Close the link to the buffer. */ + close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0, FALSE); + + /* Careful: Autocommands may have closed the tab page or made it the + * current tab page. */ + for (ptp = first_tabpage; ptp != NULL && ptp != tp; ptp = ptp->tp_next) + ; + if (ptp == NULL || tp == curtab) + return; + + /* Autocommands may have closed the window already. */ + for (wp = tp->tp_firstwin; wp != NULL && wp != win; wp = wp->w_next) + ; + if (wp == NULL) + return; + + /* When closing the last window in a tab page remove the tab page. */ + if (tp == NULL ? firstwin == lastwin : tp->tp_firstwin == tp->tp_lastwin) { + if (tp == first_tabpage) + first_tabpage = tp->tp_next; + else { + for (ptp = first_tabpage; ptp != NULL && ptp->tp_next != tp; + ptp = ptp->tp_next) + ; + if (ptp == NULL) { + EMSG2(_(e_intern2), "win_close_othertab()"); + return; + } + ptp->tp_next = tp->tp_next; + } + free_tp = TRUE; + } + + /* Free the memory used for the window. */ + win_free_mem(win, &dir, tp); + + if (free_tp) + free_tabpage(tp); +} + +/* + * Free the memory used for a window. + * Returns a pointer to the window that got the freed up space. + */ +static win_T * +win_free_mem ( + win_T *win, + int *dirp, /* set to 'v' or 'h' for direction if 'ea' */ + tabpage_T *tp /* tab page "win" is in, NULL for current */ +) +{ + frame_T *frp; + win_T *wp; + + /* Remove the window and its frame from the tree of frames. */ + frp = win->w_frame; + wp = winframe_remove(win, dirp, tp); + free(frp); + win_free(win, tp); + + /* When deleting the current window of another tab page select a new + * current window. */ + if (tp != NULL && win == tp->tp_curwin) + tp->tp_curwin = wp; + + return wp; +} + +#if defined(EXITFREE) || defined(PROTO) +void win_free_all(void) +{ + int dummy; + + while (first_tabpage->tp_next != NULL) + tabpage_close(TRUE); + + if (aucmd_win != NULL) { + (void)win_free_mem(aucmd_win, &dummy, NULL); + aucmd_win = NULL; + } + + while (firstwin != NULL) + (void)win_free_mem(firstwin, &dummy, NULL); +} + +#endif + +/* + * Remove a window and its frame from the tree of frames. + * Returns a pointer to the window that got the freed up space. + */ +win_T * +winframe_remove ( + win_T *win, + int *dirp, /* set to 'v' or 'h' for direction if 'ea' */ + tabpage_T *tp /* tab page "win" is in, NULL for current */ +) +{ + frame_T *frp, *frp2, *frp3; + frame_T *frp_close = win->w_frame; + win_T *wp; + + /* + * If there is only one window there is nothing to remove. + */ + if (tp == NULL ? firstwin == lastwin : tp->tp_firstwin == tp->tp_lastwin) + return NULL; + + /* + * Remove the window from its frame. + */ + frp2 = win_altframe(win, tp); + wp = frame2win(frp2); + + /* Remove this frame from the list of frames. */ + frame_remove(frp_close); + + if (frp_close->fr_parent->fr_layout == FR_COL) { + /* When 'winfixheight' is set, try to find another frame in the column + * (as close to the closed frame as possible) to distribute the height + * to. */ + if (frp2->fr_win != NULL && frp2->fr_win->w_p_wfh) { + frp = frp_close->fr_prev; + frp3 = frp_close->fr_next; + while (frp != NULL || frp3 != NULL) { + if (frp != NULL) { + if (frp->fr_win != NULL && !frp->fr_win->w_p_wfh) { + frp2 = frp; + wp = frp->fr_win; + break; + } + frp = frp->fr_prev; + } + if (frp3 != NULL) { + if (frp3->fr_win != NULL && !frp3->fr_win->w_p_wfh) { + frp2 = frp3; + wp = frp3->fr_win; + break; + } + frp3 = frp3->fr_next; + } + } + } + frame_new_height(frp2, frp2->fr_height + frp_close->fr_height, + frp2 == frp_close->fr_next ? TRUE : FALSE, FALSE); + *dirp = 'v'; + } else { + /* When 'winfixwidth' is set, try to find another frame in the column + * (as close to the closed frame as possible) to distribute the width + * to. */ + if (frp2->fr_win != NULL && frp2->fr_win->w_p_wfw) { + frp = frp_close->fr_prev; + frp3 = frp_close->fr_next; + while (frp != NULL || frp3