diff options
Diffstat (limited to 'src/nvim/window.c')
| -rw-r--r-- | src/nvim/window.c | 5394 |
1 files changed, 5394 insertions, 0 deletions
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 <CR> 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-&g |