vim: src/ui.c comparison

comparison src/ui.c @ 7:3fc0f57ecb91 v7.0001

updated for version 7.0001

author	vimboss
date	Sun, 13 Jun 2004 20:20:40 +0000
parents
children	4424b47a0797

comparison

equal deleted inserted replaced

-:c2daee826b8f
+:3fc0f57ecb91
+/* vi:set ts=8 sts=4 sw=4:
+*
+* VIM - Vi IMproved	by Bram Moolenaar
+*
+* Do ":help uganda"  in Vim to read copying and usage conditions.
+* Do ":help credits" in Vim to see a list of people who contributed.
+* See README.txt for an overview of the Vim source code.
+*/
+/*
+* ui.c: functions that handle the user interface.
+* 1. Keyboard input stuff, and a bit of windowing stuff.  These are called
+*    before the machine specific stuff (mch_*) so that we can call the GUI
+*    stuff instead if the GUI is running.
+* 2. Clipboard stuff.
+* 3. Input buffer stuff.
+*/
+#include "vim.h"
+void
+ui_write(s, len)
+char_u  *s;
+int	    len;
+{
+#ifdef FEAT_GUI
+if (gui.in_use && !gui.dying && !gui.starting)
+{
+	gui_write(s, len);
+	if (p_wd)
+	    gui_wait_for_chars(p_wd);
+	return;
+}
+#endif
+#ifndef NO_CONSOLE
+/* Don't output anything in silent mode ("ex -s") unless 'verbose' set */
+if (!(silent_mode && p_verbose == 0))
+{
+#ifdef FEAT_MBYTE
+	char_u	*tofree = NULL;
+	if (output_conv.vc_type != CONV_NONE)
+	{
+	    /* Convert characters from 'encoding' to 'termencoding'. */
+	    tofree = string_convert(&output_conv, s, &len);
+	    if (tofree != NULL)
+		s = tofree;
+	}
+#endif
+	mch_write(s, len);
+#ifdef FEAT_MBYTE
+	if (output_conv.vc_type != CONV_NONE)
+	    vim_free(tofree);
+#endif
+}
+#endif
+}
+#if (defined(FEAT_GUI) && (defined(UNIX) || defined(VMS))) \
+	|| defined(MACOS_X_UNIX) || defined(PROTO)
+/*
+* When executing an external program, there may be some typed characters that
+* are not consumed by it.  Give them back to ui_inchar() and they are stored
+* here for the next call.
+*/
+static char_u *ta_str = NULL;
+static int ta_off;	/* offset for next char to use when ta_str != NULL */
+static int ta_len;	/* length of ta_str when it's not NULL*/
+void
+ui_inchar_undo(s, len)
+char_u	*s;
+int		len;
+{
+char_u  *new;
+int	    newlen;
+newlen = len;
+if (ta_str != NULL)
+	newlen += ta_len - ta_off;
+new = alloc(newlen);
+if (new != NULL)
+{
+	if (ta_str != NULL)
+	{
+	    mch_memmove(new, ta_str + ta_off, (size_t)(ta_len - ta_off));
+	    mch_memmove(new + ta_len - ta_off, s, (size_t)len);
+	    vim_free(ta_str);
+	}
+	else
+	    mch_memmove(new, s, (size_t)len);
+	ta_str = new;
+	ta_len = newlen;
+	ta_off = 0;
+}
+}
+#endif
+/*
+* ui_inchar(): low level input funcion.
+* Get characters from the keyboard.
+* Return the number of characters that are available.
+* If "wtime" == 0 do not wait for characters.
+* If "wtime" == -1 wait forever for characters.
+* If "wtime" > 0 wait "wtime" milliseconds for a character.
+*
+* "tb_change_cnt" is the value of typebuf.tb_change_cnt if "buf" points into
+* it.  When typebuf.tb_change_cnt changes (e.g., when a message is received
+* from a remote client) "buf" can no longer be used.  "tb_change_cnt" is NULL
+* otherwise.
+*/
+int
+ui_inchar(buf, maxlen, wtime, tb_change_cnt)
+char_u	*buf;
+int		maxlen;
+long	wtime;	    /* don't use "time", MIPS cannot handle it */
+int		tb_change_cnt;
+{
+int		retval = 0;
+#if defined(FEAT_GUI) && (defined(UNIX) || defined(VMS))
+/*
+* Use the typeahead if there is any.
+*/
+if (ta_str != NULL)
+{
+	if (maxlen >= ta_len - ta_off)
+	{
+	    mch_memmove(buf, ta_str + ta_off, (size_t)ta_len);
+	    vim_free(ta_str);
+	    ta_str = NULL;
+	    return ta_len;
+	}
+	mch_memmove(buf, ta_str + ta_off, (size_t)maxlen);
+	ta_off += maxlen;
+	return maxlen;
+}
+#endif
+#ifdef NO_CONSOLE_INPUT
+/* Don't wait for character input when the window hasn't been opened yet.
+* Do try reading, this works when redirecting stdin from a file.
+* Must return something, otherwise we'll loop forever.  If we run into
+* this very often we probably got stuck, exit Vim. */
+if (no_console_input())
+{
+	static int count = 0;
+# ifndef NO_CONSOLE
+	retval = mch_inchar(buf, maxlen, 10L, tb_change_cnt);
+	if (retval > 0 || typebuf_changed(tb_change_cnt))
+	    return retval;
+# endif
+	if (wtime == -1 && ++count == 1000)
+	    read_error_exit();
+	buf[0] = CAR;
+	return 1;
+}
+#endif
+/* When doing a blocking wait there is no need for CTRL-C to interrupt
+* something, don't let it set got_int when it was mapped. */
+if (mapped_ctrl_c && (wtime == -1 || wtime > 100L))
+	ctrl_c_interrupts = FALSE;
+#ifdef FEAT_GUI
+if (gui.in_use)
+{
+	if (gui_wait_for_chars(wtime) && !typebuf_changed(tb_change_cnt))
+	    retval = read_from_input_buf(buf, (long)maxlen);
+}
+#endif
+#ifndef NO_CONSOLE
+# ifdef FEAT_GUI
+else
+# endif
+	retval = mch_inchar(buf, maxlen, wtime, tb_change_cnt);
+#endif
+ctrl_c_interrupts = TRUE;
+return retval;
+}
+/*
+* return non-zero if a character is available
+*/
+int
+ui_char_avail()
+{
+#ifdef FEAT_GUI
+if (gui.in_use)
+{
+	gui_mch_update();
+	return input_available();
+}
+#endif
+#ifndef NO_CONSOLE
+# ifdef NO_CONSOLE_INPUT
+if (no_console_input())
+	return 0;
+# endif
+return mch_char_avail();
+#else
+return 0;
+#endif
+}
+/*
+* Delay for the given number of milliseconds.	If ignoreinput is FALSE then we
+* cancel the delay if a key is hit.
+*/
+void
+ui_delay(msec, ignoreinput)
+long	msec;
+int		ignoreinput;
+{
+#ifdef FEAT_GUI
+if (gui.in_use && !ignoreinput)
+	gui_wait_for_chars(msec);
+else
+#endif
+	mch_delay(msec, ignoreinput);
+}
+/*
+* If the machine has job control, use it to suspend the program,
+* otherwise fake it by starting a new shell.
+* When running the GUI iconify the window.
+*/
+void
+ui_suspend()
+{
+#ifdef FEAT_GUI
+if (gui.in_use)
+{
+	gui_mch_iconify();
+	return;
+}
+#endif
+mch_suspend();
+}
+#if !defined(UNIX) || !defined(SIGTSTP) || defined(PROTO) || defined(__BEOS__)
+/*
+* When the OS can't really suspend, call this function to start a shell.
+* This is never called in the GUI.
+*/
+void
+suspend_shell()
+{
+if (*p_sh == NUL)
+	EMSG(_(e_shellempty));
+else
+{
+	MSG_PUTS(_("new shell started\n"));
+	do_shell(NULL, 0);
+}
+}
+#endif
+/*
+* Try to get the current Vim shell size.  Put the result in Rows and Columns.
+* Use the new sizes as defaults for 'columns' and 'lines'.
+* Return OK when size could be determined, FAIL otherwise.
+*/
+int
+ui_get_shellsize()
+{
+int	    retval;
+#ifdef FEAT_GUI
+if (gui.in_use)
+	retval = gui_get_shellsize();
+else
+#endif
+	retval = mch_get_shellsize();
+check_shellsize();
+/* adjust the default for 'lines' and 'columns' */
+if (retval == OK)
+{
+	set_number_default("lines", Rows);
+	set_number_default("columns", Columns);
+}
+return retval;
+}
+/*
+* Set the size of the Vim shell according to Rows and Columns, if possible.
+* The gui_set_shellsize() or mch_set_shellsize() function will try to set the
+* new size.  If this is not possible, it will adjust Rows and Columns.
+*/
+/*ARGSUSED*/
+void
+ui_set_shellsize(mustset)
+int		mustset;	/* set by the user */
+{
+#ifdef FEAT_GUI
+if (gui.in_use)
+	gui_set_shellsize(mustset,
+# ifdef WIN3264
+		TRUE
+# else
+		FALSE
+# endif
+		);
+else
+#endif
+	mch_set_shellsize();
+}
+/*
+* Called when Rows and/or Columns changed.  Adjust scroll region and mouse
+* region.
+*/
+void
+ui_new_shellsize()
+{
+if (full_screen && !exiting)
+{
+#ifdef FEAT_GUI
+	if (gui.in_use)
+	    gui_new_shellsize();
+	else
+#endif
+	    mch_new_shellsize();
+}
+}
+void
+ui_breakcheck()
+{
+#ifdef FEAT_GUI
+if (gui.in_use)
+	gui_mch_update();
+else
+#endif
+	mch_breakcheck();
+}
+/*****************************************************************************
+* Functions for copying and pasting text between applications.
+* This is always included in a GUI version, but may also be included when the
+* clipboard and mouse is available to a terminal version such as xterm.
+* Note: there are some more functions in ops.c that handle selection stuff.
+*
+* Also note that the majority of functions here deal with the X 'primary'
+* (visible - for Visual mode use) selection, and only that. There are no
+* versions of these for the 'clipboard' selection, as Visual mode has no use
+* for them.
+*/
+#if defined(FEAT_CLIPBOARD) || defined(PROTO)
+/*
+* Selection stuff using Visual mode, for cutting and pasting text to other
+* windows.
+*/
+/*
+* Call this to initialise the clipboard.  Pass it FALSE if the clipboard code
+* is included, but the clipboard can not be used, or TRUE if the clipboard can
+* be used.  Eg unix may call this with FALSE, then call it again with TRUE if
+* the GUI starts.
+*/
+void
+clip_init(can_use)
+int	    can_use;
+{
+VimClipboard *cb;
+cb = &clip_star;
+for (;;)
+{
+	cb->available  = can_use;
+	cb->owned      = FALSE;
+	cb->start.lnum = 0;
+	cb->start.col  = 0;
+	cb->end.lnum   = 0;
+	cb->end.col    = 0;
+	cb->state      = SELECT_CLEARED;
+	if (cb == &clip_plus)
+	    break;
+	cb = &clip_plus;
+}
+}
+/*
+* Check whether the VIsual area has changed, and if so try to become the owner
+* of the selection, and free any old converted selection we may still have
+* lying around.  If the VIsual mode has ended, make a copy of what was
+* selected so we can still give it to others.	Will probably have to make sure
+* this is called whenever VIsual mode is ended.
+*/
+void
+clip_update_selection()
+{
+pos_T    start, end;
+/* If visual mode is only due to a redo command ("."), then ignore it */
+if (!redo_VIsual_busy && VIsual_active && (State & NORMAL))
+{
+	if (lt(VIsual, curwin->w_cursor))
+	{
+	    start = VIsual;
+	    end = curwin->w_cursor;
+#ifdef FEAT_MBYTE
+	    if (has_mbyte)
+		end.col += (*mb_ptr2len_check)(ml_get_cursor()) - 1;
+#endif
+	}
+	else
+	{
+	    start = curwin->w_cursor;
+	    end = VIsual;
+	}
+	if (!equalpos(clip_star.start, start)
+		|| !equalpos(clip_star.end, end)
+		|| clip_star.vmode != VIsual_mode)
+	{
+	    clip_clear_selection();
+	    clip_star.start = start;
+	    clip_star.end = end;
+	    clip_star.vmode = VIsual_mode;
+	    clip_free_selection(&clip_star);
+	    clip_own_selection(&clip_star);
+	    clip_gen_set_selection(&clip_star);
+	}
+}
+}
+void
+clip_own_selection(cbd)
+VimClipboard	*cbd;
+{
+/*
+* Also want to check somehow that we are reading from the keyboard rather
+* than a mapping etc.
+*/
+if (!cbd->owned && cbd->available)
+{
+	cbd->owned = (clip_gen_own_selection(cbd) == OK);
+#ifdef FEAT_X11
+	if (cbd == &clip_star)
+	{
+	    /* May have to show a different kind of highlighting for the selected
+	     * area.  There is no specific redraw command for this, just redraw
+	     * all windows on the current buffer. */
+	    if (cbd->owned
+		    && get_real_state() == VISUAL
+		    && clip_isautosel()
+		    && hl_attr(HLF_V) != hl_attr(HLF_VNC))
+		redraw_curbuf_later(INVERTED_ALL);
+	}
+#endif
+}
+}
+void
+clip_lose_selection(cbd)
+VimClipboard	*cbd;
+{
+#ifdef FEAT_X11
+int	    was_owned = cbd->owned;
+#endif
+int     visual_selection = (cbd == &clip_star);
+clip_free_selection(cbd);
+cbd->owned = FALSE;
+if (visual_selection)
+	clip_clear_selection();
+clip_gen_lose_selection(cbd);
+#ifdef FEAT_X11
+if (visual_selection)
+{
+	/* May have to show a different kind of highlighting for the selected
+	 * area.  There is no specific redraw command for this, just redraw all
+	 * windows on the current buffer. */
+	if (was_owned
+		&& get_real_state() == VISUAL
+		&& clip_isautosel()
+		&& hl_attr(HLF_V) != hl_attr(HLF_VNC))
+	{
+	    update_curbuf(INVERTED_ALL);
+	    setcursor();
+	    cursor_on();
+	    out_flush();
+# ifdef FEAT_GUI
+	    if (gui.in_use)
+		gui_update_cursor(TRUE, FALSE);
+# endif
+	}
+}
+#endif
+}
+void
+clip_copy_selection()
+{
+if (VIsual_active && (State & NORMAL) && clip_star.available)
+{
+	if (clip_isautosel())
+	    clip_update_selection();
+	clip_free_selection(&clip_star);
+	clip_own_selection(&clip_star);
+	if (clip_star.owned)
+	    clip_get_selection(&clip_star);
+	clip_gen_set_selection(&clip_star);
+}
+}
+/*
+* Called when Visual mode is ended: update the selection.
+*/
+void
+clip_auto_select()
+{
+if (clip_isautosel())
+	clip_copy_selection();
+}
+/*
+* Return TRUE if automatic selection of Visual area is desired.
+*/
+int
+clip_isautosel()
+{
+return (
+#ifdef FEAT_GUI
+	    gui.in_use ? (vim_strchr(p_go, GO_ASEL) != NULL) :
+#endif
+	    clip_autoselect);
+}
+/*
+* Stuff for general mouse selection, without using Visual mode.
+*/
+static int clip_compare_pos __ARGS((int row1, int col1, int row2, int col2));
+static void clip_invert_area __ARGS((int, int, int, int, int how));
+static void clip_invert_rectangle __ARGS((int row, int col, int height, int width, int invert));
+static void clip_get_word_boundaries __ARGS((VimClipboard *, int, int));
+static int  clip_get_line_end __ARGS((int));
+static void clip_update_modeless_selection __ARGS((VimClipboard *, int, int,
+						    int, int));
+/* flags for clip_invert_area() */
+#define CLIP_CLEAR	1
+#define CLIP_SET	2
+#define CLIP_TOGGLE	3
+/*
+* Start, continue or end a modeless selection.  Used when editing the
+* command-line and in the cmdline window.
+*/
+void
+clip_modeless(button, is_click, is_drag)
+int		button;
+int		is_click;
+int		is_drag;
+{
+int		repeat;
+repeat = ((clip_star.mode == SELECT_MODE_CHAR
+		|| clip_star.mode == SELECT_MODE_LINE)
+					      && (mod_mask & MOD_MASK_2CLICK))
+	    || (clip_star.mode == SELECT_MODE_WORD
+					     && (mod_mask & MOD_MASK_3CLICK));
+if (is_click && button == MOUSE_RIGHT)
+{
+	/* Right mouse button: If there was no selection, start one.
+	 * Otherwise extend the existing selection. */
+	if (clip_star.state == SELECT_CLEARED)
+	    clip_start_selection(mouse_col, mouse_row, FALSE);
+	clip_process_selection(button, mouse_col, mouse_row, repeat);
+}
+else if (is_click)
+	clip_start_selection(mouse_col, mouse_row, repeat);
+else if (is_drag)
+{
+	/* Don't try extending a selection if there isn't one.  Happens when
+	 * button-down is in the cmdline and them moving mouse upwards. */
+	if (clip_star.state != SELECT_CLEARED)
+	    clip_process_selection(button, mouse_col, mouse_row, repeat);
+}
+else /* release */
+	clip_process_selection(MOUSE_RELEASE, mouse_col, mouse_row, FALSE);
+}
+/*
+* Compare two screen positions ala strcmp()
+*/
+static int
+clip_compare_pos(row1, col1, row2, col2)
+int		row1;
+int		col1;
+int		row2;
+int		col2;
+{
+if (row1 > row2) return(1);
+if (row1 < row2) return(-1);
+if (col1 > col2) return(1);
+if (col1 < col2) return(-1);
+		     return(0);
+}
+/*
+* Start the selection
+*/
+void
+clip_start_selection(col, row, repeated_click)
+int		col;
+int		row;
+int		repeated_click;
+{
+VimClipboard	*cb = &clip_star;
+if (cb->state == SELECT_DONE)
+	clip_clear_selection();
+row = check_row(row);
+col = check_col(col);
+#ifdef FEAT_MBYTE
+col = mb_fix_col(col, row);
+#endif
+cb->start.lnum  = row;
+cb->start.col   = col;
+cb->end	    = cb->start;
+cb->origin_row  = (short_u)cb->start.lnum;
+cb->state	    = SELECT_IN_PROGRESS;
+if (repeated_click)
+{
+	if (++cb->mode > SELECT_MODE_LINE)
+	    cb->mode = SELECT_MODE_CHAR;
+}
+else
+	cb->mode = SELECT_MODE_CHAR;
+#ifdef FEAT_GUI
+/* clear the cursor until the selection is made */
+if (gui.in_use)
+	gui_undraw_cursor();
+#endif
+switch (cb->mode)
+{
+	case SELECT_MODE_CHAR:
+	    cb->origin_start_col = cb->start.col;
+	    cb->word_end_col = clip_get_line_end((int)cb->start.lnum);
+	    break;
+	case SELECT_MODE_WORD:
+	    clip_get_word_boundaries(cb, (int)cb->start.lnum, cb->start.col);
+	    cb->origin_start_col = cb->word_start_col;
+	    cb->origin_end_col	 = cb->word_end_col;
+	    clip_invert_area((int)cb->start.lnum, cb->word_start_col,
+			    (int)cb->end.lnum, cb->word_end_col, CLIP_SET);
+	    cb->start.col = cb->word_start_col;
+	    cb->end.col   = cb->word_end_col;
+	    break;
+	case SELECT_MODE_LINE:
+	    clip_invert_area((int)cb->start.lnum, 0, (int)cb->start.lnum,
+			    (int)Columns, CLIP_SET);
+	    cb->start.col = 0;
+	    cb->end.col   = Columns;
+	    break;
+}
+cb->prev = cb->start;
+#ifdef DEBUG_SELECTION
+printf("Selection started at (%u,%u)\n", cb->start.lnum, cb->start.col);
+#endif
+}
+/*
+* Continue processing the selection
+*/
+void
+clip_process_selection(button, col, row, repeated_click)
+int		button;
+int		col;
+int		row;
+int_u	repeated_click;
+{
+VimClipboard	*cb = &clip_star;
+int			diff;
+int			slen = 1;	/* cursor shape width */
+if (button == MOUSE_RELEASE)
+{
+	/* Check to make sure we have something selected */
+	if (cb->start.lnum == cb->end.lnum && cb->start.col == cb->end.col)
+	{
+#ifdef FEAT_GUI
+	    if (gui.in_use)
+		gui_update_cursor(FALSE, FALSE);
+#endif
+	    cb->state = SELECT_CLEARED;
+	    return;
+	}
+#ifdef DEBUG_SELECTION
+	printf("Selection ended: (%u,%u) to (%u,%u)\n", cb->start.lnum,
+		cb->start.col, cb->end.lnum, cb->end.col);
+#endif
+	if (clip_isautosel()
+		|| (
+#ifdef FEAT_GUI
+		    gui.in_use ? (vim_strchr(p_go, GO_ASELML) != NULL) :
+#endif
+		    clip_autoselectml))
+	    clip_copy_modeless_selection(FALSE);
+#ifdef FEAT_GUI
+	if (gui.in_use)
+	    gui_update_cursor(FALSE, FALSE);
+#endif
+	cb->state = SELECT_DONE;
+	return;
+}
+row = check_row(row);
+col = check_col(col);
+#ifdef FEAT_MBYTE
+col = mb_fix_col(col, row);
+#endif
+if (col == (int)cb->prev.col && row == cb->prev.lnum && !repeated_click)
+	return;
+/*
+* When extending the selection with the right mouse button, swap the
+* start and end if the position is before half the selection
+*/
+if (cb->state == SELECT_DONE && button == MOUSE_RIGHT)
+{
+	/*
+	 * If the click is before the start, or the click is inside the
+	 * selection and the start is the closest side, set the origin to the
+	 * end of the selection.
+	 */
+	if (clip_compare_pos(row, col, (int)cb->start.lnum, cb->start.col) < 0
+		|| (clip_compare_pos(row, col,
+					   (int)cb->end.lnum, cb->end.col) < 0
+		    && (((cb->start.lnum == cb->end.lnum
+			    && cb->end.col - col > col - cb->start.col))
+			|| ((diff = (cb->end.lnum - row) -
+						   (row - cb->start.lnum)) > 0
+			    || (diff == 0 && col < (int)(cb->start.col +
+							 cb->end.col) / 2)))))
+	{
+	    cb->origin_row = (short_u)cb->end.lnum;
+	    cb->origin_start_col = cb->end.col - 1;
+	    cb->origin_end_col = cb->end.col;
+	}
+	else
+	{
+	    cb->origin_row = (short_u)cb->start.lnum;
+	    cb->origin_start_col = cb->start.col;
+	    cb->origin_end_col = cb->start.col;
+	}
+	if (cb->mode == SELECT_MODE_WORD && !repeated_click)
+	    cb->mode = SELECT_MODE_CHAR;
+}
+/* set state, for when using the right mouse button */
+cb->state = SELECT_IN_PROGRESS;
+#ifdef DEBUG_SELECTION
+printf("Selection extending to (%d,%d)\n", row, col);
+#endif
+if (repeated_click && ++cb->mode > SELECT_MODE_LINE)
+	cb->mode = SELECT_MODE_CHAR;
+switch (cb->mode)
+{
+	case SELECT_MODE_CHAR:
+	    /* If we're on a different line, find where the line ends */
+	    if (row != cb->prev.lnum)
+		cb->word_end_col = clip_get_line_end(row);
+	    /* See if we are before or after the origin of the selection */
+	    if (clip_compare_pos(row, col, cb->origin_row,
+						   cb->origin_start_col) >= 0)
+	    {
+		if (col >= (int)cb->word_end_col)
+		    clip_update_modeless_selection(cb, cb->origin_row,
+			    cb->origin_start_col, row, (int)Columns);
+		else
+		{
+#ifdef FEAT_MBYTE
+		    if (has_mbyte && mb_lefthalve(row, col))
+			slen = 2;
+#endif
+		    clip_update_modeless_selection(cb, cb->origin_row,
+			    cb->origin_start_col, row, col + slen);
+		}
+	    }
+	    else
+	    {
+#ifdef FEAT_MBYTE
+		if (has_mbyte
+			&& mb_lefthalve(cb->origin_row, cb->origin_start_col))
+		    slen = 2;
+#endif
+		if (col >= (int)cb->word_end_col)
+		    clip_update_modeless_selection(cb, row, cb->word_end_col,
+			    cb->origin_row, cb->origin_start_col + slen);
+		else
+		    clip_update_modeless_selection(cb, row, col,
+			    cb->origin_row, cb->origin_start_col + slen);
+	    }
+	    break;
+	case SELECT_MODE_WORD:
+	    /* If we are still within the same word, do nothing */
+	    if (row == cb->prev.lnum && col >= (int)cb->word_start_col
+		    && col < (int)cb->word_end_col && !repeated_click)
+		return;
+	    /* Get new word boundaries */
+	    clip_get_word_boundaries(cb, row, col);
+	    /* Handle being after the origin point of selection */
+	    if (clip_compare_pos(row, col, cb->origin_row,
+		    cb->origin_start_col) >= 0)
+		clip_update_modeless_selection(cb, cb->origin_row,
+			cb->origin_start_col, row, cb->word_end_col);
+	    else
+		clip_update_modeless_selection(cb, row, cb->word_start_col,
+			cb->origin_row, cb->origin_end_col);
+	    break;
+	case SELECT_MODE_LINE:
+	    if (row == cb->prev.lnum && !repeated_click)
+		return;
+	    if (clip_compare_pos(row, col, cb->origin_row,
+		    cb->origin_start_col) >= 0)
+		clip_update_modeless_selection(cb, cb->origin_row, 0, row,
+			(int)Columns);
+	    else
+		clip_update_modeless_selection(cb, row, 0, cb->origin_row,
+			(int)Columns);
+	    break;
+}
+cb->prev.lnum = row;
+cb->prev.col  = col;
+#ifdef DEBUG_SELECTION
+	printf("Selection is: (%u,%u) to (%u,%u)\n", cb->start.lnum,
+		cb->start.col, cb->end.lnum, cb->end.col);
+#endif
+}
+#if 0 /* not used */
+/*
+* Called after an Expose event to redraw the selection
+*/
+void
+clip_redraw_selection(x, y, w, h)
+int	    x;
+int	    y;
+int	    w;
+int	    h;
+{
+VimClipboard    *cb = &clip_star;
+int		    row1, col1, row2, col2;
+int		    row;
+int		    start;
+int		    end;
+if (cb->state == SELECT_CLEARED)
+	return;
+row1 = check_row(Y_2_ROW(y));
+col1 = check_col(X_2_COL(x));
+row2 = check_row(Y_2_ROW(y + h - 1));
+col2 = check_col(X_2_COL(x + w - 1));
+/* Limit the rows that need to be re-drawn */
+if (cb->start.lnum > row1)
+	row1 = cb->start.lnum;
+if (cb->end.lnum < row2)
+	row2 = cb->end.lnum;
+/* Look at each row that might need to be re-drawn */
+for (row = row1; row <= row2; row++)
+{
+	/* For the first selection row, use the starting selection column */
+	if (row == cb->start.lnum)
+	    start = cb->start.col;
+	else
+	    start = 0;
+	/* For the last selection row, use the ending selection column */
+	if (row == cb->end.lnum)
+	    end = cb->end.col;
+	else
+	    end = Columns;
+	if (col1 > start)
+	    start = col1;
+	if (col2 < end)
+	    end = col2 + 1;
+	if (end > start)
+	    gui_mch_invert_rectangle(row, start, 1, end - start);
+}
+}
+#endif
+# if defined(FEAT_GUI) || defined(PROTO)
+/*
+* Redraw part of the selection if character at "row,col" is inside of it.
+* Only used for the GUI.
+*/
+void
+clip_may_redraw_selection(row, col, len)
+int		row, col;
+int		len;
+{
+int		start = col;
+int		end = col + len;
+if (clip_star.state != SELECT_CLEARED
+	    && row >= clip_star.start.lnum
+	    && row <= clip_star.end.lnum)
+{
+	if (row == clip_star.start.lnum && start < (int)clip_star.start.col)
+	    start = clip_star.start.col;
+	if (row == clip_star.end.lnum && end > (int)clip_star.end.col)
+	    end = clip_star.end.col;
+	if (end > start)
+	    clip_invert_area(row, start, row, end, 0);
+}
+}
+# endif
+/*
+* Called from outside to clear selected region from the display
+*/
+void
+clip_clear_selection()
+{
+VimClipboard    *cb = &clip_star;
+if (cb->state == SELECT_CLEARED)
+	return;
+clip_invert_area((int)cb->start.lnum, cb->start.col, (int)cb->end.lnum,
+						     cb->end.col, CLIP_CLEAR);
+cb->state = SELECT_CLEARED;
+}
+/*
+* Clear the selection if any lines from "row1" to "row2" are inside of it.
+*/
+void
+clip_may_clear_selection(row1, row2)
+int	row1, row2;
+{
+if (clip_star.state == SELECT_DONE
+	    && row2 >= clip_star.start.lnum
+	    && row1 <= clip_star.end.lnum)
+	clip_clear_selection();
+}
+/*
+* Called before the screen is scrolled up or down.  Adjusts the line numbers
+* of the selection.  Call with big number when clearing the screen.
+*/
+void
+clip_scroll_selection(rows)
+int	    rows;		/* negative for scroll down */
+{
+int	    lnum;
+if (clip_star.state == SELECT_CLEARED)
+	return;
+lnum = clip_star.start.lnum - rows;
+if (lnum <= 0)
+	clip_star.start.lnum = 0;
+else if (lnum >= screen_Rows)	/* scrolled off of the screen */
+	clip_star.state = SELECT_CLEARED;
+else
+	clip_star.start.lnum = lnum;
+lnum = clip_star.end.lnum - rows;
+if (lnum < 0)			/* scrolled off of the screen */
+	clip_star.state = SELECT_CLEARED;
+else if (lnum >= screen_Rows)
+	clip_star.end.lnum = screen_Rows - 1;
+else
+	clip_star.end.lnum = lnum;
+}
+/*
+* Invert a region of the display between a starting and ending row and column
+* Values for "how":
+* CLIP_CLEAR:  undo inversion
+* CLIP_SET:    set inversion
+* CLIP_TOGGLE: set inversion if pos1 < pos2, undo inversion otherwise.
+* 0: invert (GUI only).
+*/
+static void
+clip_invert_area(row1, col1, row2, col2, how)
+int		row1;
+int		col1;
+int		row2;
+int		col2;
+int		how;
+{
+int		invert = FALSE;
+if (how == CLIP_SET)
+	invert = TRUE;
+/* Swap the from and to positions so the from is always before */
+if (clip_compare_pos(row1, col1, row2, col2) > 0)
+{
+	int tmp_row, tmp_col;
+	tmp_row = row1;
+	tmp_col = col1;
+	row1	= row2;
+	col1	= col2;
+	row2	= tmp_row;
+	col2	= tmp_col;
+}
+else if (how == CLIP_TOGGLE)
+	invert = TRUE;
+/* If all on the same line, do it the easy way */
+if (row1 == row2)
+{
+	clip_invert_rectangle(row1, col1, 1, col2 - col1, invert);
+}
+else
+{
+	/* Handle a piece of the first line */
+	if (col1 > 0)
+	{
+	    clip_invert_rectangle(row1, col1, 1, (int)Columns - col1, invert);
+	    row1++;
+	}
+	/* Handle a piece of the last line */
+	if (col2 < Columns - 1)
+	{
+	    clip_invert_rectangle(row2, 0, 1, col2, invert);
+	    row2--;
+	}
+	/* Handle the rectangle thats left */
+	if (row2 >= row1)
+	    clip_invert_rectangle(row1, 0, row2 - row1 + 1, (int)Columns,
+								      invert);
+}
+}
+/*
+* Invert or un-invert a rectangle of the screen.
+* "invert" is true if the result is inverted.
+*/
+static void
+clip_invert_rectangle(row, col, height, width, invert)
+int		row;
+int		col;
+int		height;
+int		width;
+int		invert;
+{
+#ifdef FEAT_GUI
+if (gui.in_use)
+	gui_mch_invert_rectangle(row, col, height, width);
+else
+#endif
+	screen_draw_rectangle(row, col, height, width, invert);
+}
+/*
+* Copy the currently selected area into the '*' register so it will be
+* available for pasting.
+* When "both" is TRUE also copy to the '+' register.
+*/
+/*ARGSUSED*/
+void
+clip_copy_modeless_selection(both)
+int		both;
+{
+char_u	*buffer;
+char_u	*bufp;
+int		row;
+int		start_col;
+int		end_col;
+int		line_end_col;
+int		add_newline_flag = FALSE;
+int		len;
+#ifdef FEAT_MBYTE
+char_u	*p;
+int		i;
+#endif
+int		row1 = clip_star.start.lnum;
+int		col1 = clip_star.start.col;
+int		row2 = clip_star.end.lnum;
+int		col2 = clip_star.end.col;
+/*
+* Make sure row1 <= row2, and if row1 == row2 that col1 <= col2.
+*/
+if (row1 > row2)
+{
+	row = row1; row1 = row2; row2 = row;
+	row = col1; col1 = col2; col2 = row;
+}
+else if (row1 == row2 && col1 > col2)
+{
+	row = col1; col1 = col2; col2 = row;
+}
+#ifdef FEAT_MBYTE
+/* correct starting point for being on right halve of double-wide char */
+p = ScreenLines + LineOffset[row1];
+if (enc_dbcs != 0)
+	col1 -= (*mb_head_off)(p, p + col1);
+else if (enc_utf8 && p[col1] == 0)
+	--col1;
+#endif
+/* Create a temporary buffer for storing the text */
+len = (row2 - row1 + 1) * Columns + 1;
+#ifdef FEAT_MBYTE
+if (enc_dbcs != 0)
+	len *= 2;	/* max. 2 bytes per display cell */
+else if (enc_utf8)
+	len *= 9;	/* max. 3 bytes per display cell + 2 composing chars */
+#endif
+buffer = lalloc((long_u)len, TRUE);
+if (buffer == NULL)	    /* out of memory */
+	return;
+/* Process each row in the selection */
+for (bufp = buffer, row = row1; row <= row2; row++)
+{
+	if (row == row1)
+	    start_col = col1;
+	else
+	    start_col = 0;
+	if (row == row2)
+	    end_col = col2;
+	else
+	    end_col = Columns;
+	line_end_col = clip_get_line_end(row);
+	/* See if we need to nuke some trailing whitespace */
+	if (end_col >= Columns && (row < row2 || end_col > line_end_col))
+	{
+	    /* Get rid of trailing whitespace */
+	    end_col = line_end_col;
+	    if (end_col < start_col)
+		end_col = start_col;
+	    /* If the last line extended to the end, add an extra newline */
+	    if (row == row2)
+		add_newline_flag = TRUE;
+	}
+	/* If after the first row, we need to always add a newline */
+	if (row > row1 && !LineWraps[row - 1])
+	    *bufp++ = NL;
+	if (row < screen_Rows && end_col <= screen_Columns)
+	{
+#ifdef FEAT_MBYTE
+	    if (enc_dbcs != 0)
+	    {
+		p = ScreenLines + LineOffset[row];
+		for (i = start_col; i < end_col; ++i)
+		    if (enc_dbcs == DBCS_JPNU && p[i] == 0x8e)
+		    {
+			/* single-width double-byte char */
+			*bufp++ = 0x8e;
+			*bufp++ = ScreenLines2[LineOffset[row] + i];
+		    }
+		    else
+		    {
+			*bufp++ = p[i];
+			if (MB_BYTE2LEN(p[i]) == 2)
+			    *bufp++ = p[++i];
+		    }
+	    }
+	    else if (enc_utf8)
+	    {
+		int	off;
+		off = LineOffset[row];
+		for (i = start_col; i < end_col; ++i)
+		{
+		    /* The base character is either in ScreenLinesUC[] or
+		     * ScreenLines[]. */
+		    if (ScreenLinesUC[off + i] == 0)
+			*bufp++ = ScreenLines[off + i];
+		    else
+		    {
+			bufp += utf_char2bytes(ScreenLinesUC[off + i], bufp);
+			if (ScreenLinesC1[off + i] != 0)
+			{
+			    /* Add one or two composing characters. */
+			    bufp += utf_char2bytes(ScreenLinesC1[off + i],
+									bufp);
+			    if (ScreenLinesC2[off + i] != 0)
+				bufp += utf_char2bytes(ScreenLinesC2[off + i],
+					bufp);
+			}
+		    }
+		    /* Skip right halve of double-wide character. */
+		    if (ScreenLines[off + i + 1] == 0)
+			++i;
+		}
+	    }
+	    else
+#endif
+	    {
+		STRNCPY(bufp, ScreenLines + LineOffset[row] + start_col,
+							 end_col - start_col);
+		bufp += end_col - start_col;
+	    }
+	}
+}
+/* Add a newline at the end if the selection ended there */
+if (add_newline_flag)
+	*bufp++ = NL;
+/* First cleanup any old selection and become the owner. */
+clip_free_selection(&clip_star);
+clip_own_selection(&clip_star);
+/* Yank the text into the '*' register. */
+clip_yank_selection(MCHAR, buffer, (long)(bufp - buffer), &clip_star);
+/* Make the register contents available to the outside world. */
+clip_gen_set_selection(&clip_star);
+#ifdef FEAT_X11
+if (both)
+{
+	/* Do the same for the '+' register. */
+	clip_free_selection(&clip_plus);
+	clip_own_selection(&clip_plus);
+	clip_yank_selection(MCHAR, buffer, (long)(bufp - buffer), &clip_plus);
+	clip_gen_set_selection(&clip_plus);
+}
+#endif
+vim_free(buffer);
+}
+/*
+* Find the starting and ending positions of the word at the given row and
+* column.  Only white-separated words are recognized here.
+*/
+#define CHAR_CLASS(c)	(c <= ' ' ? ' ' : vim_iswordc(c))
+static void
+clip_get_word_boundaries(cb, row, col)
+VimClipboard	*cb;
+int			row;
+int			col;
+{
+int		start_class;
+int		temp_col;
+char_u	*p;
+#ifdef FEAT_MBYTE
+int		mboff;
+#endif
+if (row >= screen_Rows || col >= screen_Columns)
+	return;
+p = ScreenLines + LineOffset[row];
+#ifdef FEAT_MBYTE
+/* Correct for starting in the right halve of a double-wide char */
+if (enc_dbcs != 0)
+	col -= dbcs_screen_head_off(p, p + col);
+else if (enc_utf8 && p[col] == 0)
+	--col;
+#endif
+start_class = CHAR_CLASS(p[col]);
+temp_col = col;
+for ( ; temp_col > 0; temp_col--)
+#ifdef FEAT_MBYTE
+	if (enc_dbcs != 0
+		   && (mboff = dbcs_screen_head_off(p, p + temp_col - 1)) > 0)
+	    temp_col -= mboff;
+	else
+#endif
+	if (CHAR_CLASS(p[temp_col - 1]) != start_class
+#ifdef FEAT_MBYTE
+		&& !(enc_utf8 && p[temp_col - 1] == 0)
+#endif
+		)
+	    break;
+cb->word_start_col = temp_col;
+temp_col = col;
+for ( ; temp_col < screen_Columns; temp_col++)
+#ifdef FEAT_MBYTE
+	if (enc_dbcs != 0 && dbcs_ptr2cells(p + temp_col) == 2)
+	    ++temp_col;
+	else
+#endif
+	if (CHAR_CLASS(p[temp_col]) != start_class
+#ifdef FEAT_MBYTE
+		&& !(enc_utf8 && p[temp_col] == 0)
+#endif
+		)
+	    break;
+cb->word_end_col = temp_col;
+}
+/*
+* Find the column position for the last non-whitespace character on the given
+* line.
+*/
+static int
+clip_get_line_end(row)
+int		row;
+{
+int	    i;
+if (row >= screen_Rows)
+	return 0;
+for (i = screen_Columns; i > 0; i--)
+	if (ScreenLines[LineOffset[row] + i - 1] != ' ')
+	    break;
+return i;
+}
+/*
+* Update the currently selected region by adding and/or subtracting from the
+* beginning or end and inverting the changed area(s).
+*/
+static void
+clip_update_modeless_selection(cb, row1, col1, row2, col2)
+VimClipboard    *cb;
+int		    row1;
+int		    col1;
+int		    row2;
+int		    col2;
+{
+/* See if we changed at the beginning of the selection */
+if (row1 != cb->start.lnum || col1 != (int)cb->start.col)
+{
+	clip_invert_area(row1, col1, (int)cb->start.lnum, cb->start.col,
+								 CLIP_TOGGLE);
+	cb->start.lnum = row1;
+	cb->start.col  = col1;
+}
+/* See if we changed at the end of the selection */
+if (row2 != cb->end.lnum || col2 != (int)cb->end.col)
+{
+	clip_invert_area((int)cb->end.lnum, cb->end.col, row2, col2,
+								 CLIP_TOGGLE);
+	cb->end.lnum = row2;
+	cb->end.col  = col2;
+}
+}
+int
+clip_gen_own_selection(cbd)
+VimClipboard	*cbd;
+{
+#ifdef FEAT_XCLIPBOARD
+# ifdef FEAT_GUI
+if (gui.in_use)
+	return clip_mch_own_selection(cbd);
+else
+# endif
+	return clip_xterm_own_selection(cbd);
+#else
+return clip_mch_own_selection(cbd);
+#endif
+}
+void
+clip_gen_lose_selection(cbd)
+VimClipboard	*cbd;
+{
+#ifdef FEAT_XCLIPBOARD
+# ifdef FEAT_GUI
+if (gui.in_use)
+	clip_mch_lose_selection(cbd);
+else
+# endif
+	clip_xterm_lose_selection(cbd);
+#else
+clip_mch_lose_selection(cbd);
+#endif
+}
+void
+clip_gen_set_selection(cbd)
+VimClipboard	*cbd;
+{
+#ifdef FEAT_XCLIPBOARD
+# ifdef FEAT_GUI
+if (gui.in_use)
+	clip_mch_set_selection(cbd);
+else
+# endif
+	clip_xterm_set_selection(cbd);
+#else
+clip_mch_set_selection(cbd);
+#endif
+}
+void
+clip_gen_request_selection(cbd)
+VimClipboard	*cbd;
+{
+#ifdef FEAT_XCLIPBOARD
+# ifdef FEAT_GUI
+if (gui.in_use)
+	clip_mch_request_selection(cbd);
+else
+# endif
+	clip_xterm_request_selection(cbd);
+#else
+clip_mch_request_selection(cbd);
+#endif
+}
+#endif /* FEAT_CLIPBOARD */
+/*****************************************************************************
+* Functions that handle the input buffer.
+* This is used for any GUI version, and the unix terminal version.
+*
+* For Unix, the input characters are buffered to be able to check for a
+* CTRL-C.  This should be done with signals, but I don't know how to do that
+* in a portable way for a tty in RAW mode.
+*
+* For the client-server code in the console the received keys are put in the
+* input buffer.
+*/
+#if defined(USE_INPUT_BUF) || defined(PROTO)
+/*
+* Internal typeahead buffer.  Includes extra space for long key code
+* descriptions which would otherwise overflow.  The buffer is considered full
+* when only this extra space (or part of it) remains.
+*/
+#if defined(FEAT_SUN_WORKSHOP) || defined(FEAT_NETBEANS_INTG) \
+	|| defined(FEAT_CLIENTSERVER)
+/*
+* Sun WorkShop and NetBeans stuff debugger commands into the input buffer.
+* This requires a larger buffer...
+* (Madsen) Go with this for remote input as well ...
+*/
+# define INBUFLEN 4096
+#else
+# define INBUFLEN 250
+#endif
+static char_u	inbuf[INBUFLEN + MAX_KEY_CODE_LEN];
+static int	inbufcount = 0;	    /* number of chars in inbuf[] */
+/*
+* vim_is_input_buf_full(), vim_is_input_buf_empty(), add_to_input_buf(), and
+* trash_input_buf() are functions for manipulating the input buffer.  These
+* are used by the gui_* calls when a GUI is used to handle keyboard input.
+*/
+int
+vim_is_input_buf_full()
+{
+return (inbufcount >= INBUFLEN);
+}
+int
+vim_is_input_buf_empty()
+{
+return (inbufcount == 0);
+}
+#if defined(FEAT_OLE) || defined(PROTO)
+int
+vim_free_in_input_buf()
+{
+return (INBUFLEN - inbufcount);
+}
+#endif
+#if defined(FEAT_GUI_GTK) || defined(PROTO)
+int
+vim_used_in_input_buf()
+{
+return inbufcount;
+}
+#endif
+#if defined(FEAT_EVAL) || defined(FEAT_EX_EXTRA) || defined(PROTO)
+/*
+* Return the current contents of the input buffer and make it empty.
+* The returned pointer must be passed to set_input_buf() later.
+*/
+char_u *
+get_input_buf()
+{
+garray_T	*gap;
+/* We use a growarray to store the data pointer and the length. */
+gap = (garray_T *)alloc((unsigned)sizeof(garray_T));
+if (gap != NULL)
+{
+	/* Add one to avoid a zero size. */
+	gap->ga_data = alloc((unsigned)inbufcount + 1);
+	if (gap->ga_data != NULL)
+	    mch_memmove(gap->ga_data, inbuf, (size_t)inbufcount);
+	gap->ga_len = inbufcount;
+}
+trash_input_buf();
+return (char_u *)gap;
+}
+/*
+* Restore the input buffer with a pointer returned from get_input_buf().
+* The allocated memory is freed, this only works once!
+*/
+void
+set_input_buf(p)
+char_u	*p;
+{
+garray_T	*gap = (garray_T *)p;
+if (gap != NULL)
+{
+	if (gap->ga_data != NULL)
+	{
+	    mch_memmove(inbuf, gap->ga_data, gap->ga_len);
+	    inbufcount = gap->ga_len;
+	    vim_free(gap->ga_data);
+	}
+	vim_free(gap);
+}
+}
+#endif
+#if defined(FEAT_GUI) || defined(FEAT_MOUSE_GPM) \
+	|| defined(FEAT_XCLIPBOARD) || defined(VMS) \
+	|| defined(FEAT_SNIFF) || defined(FEAT_CLIENTSERVER) || defined(PROTO)
+/*
+* Add the given bytes to the input buffer
+* Special keys start with CSI.  A real CSI must have been translated to
+* CSI KS_EXTRA KE_CSI.  K_SPECIAL doesn't require translation.
+*/
+void
+add_to_input_buf(s, len)
+char_u  *s;
+int	    len;
+{
+if (inbufcount + len > INBUFLEN + MAX_KEY_CODE_LEN)
+	return;	    /* Shouldn't ever happen! */
+#ifdef FEAT_HANGULIN
+if ((State & (INSERT|CMDLINE)) && hangul_input_state_get())
+	if ((len = hangul_input_process(s, len)) == 0)
+	    return;
+#endif
+while (len--)
+	inbuf[inbufcount++] = *s++;
+}
+#endif
+#if (defined(FEAT_XIM) && defined(FEAT_GUI_GTK)) \
+	|| (defined(FEAT_MBYTE) && defined(FEAT_MBYTE_IME)) \
+	|| defined(PROTO)
+/*
+* Add "str[len]" to the input buffer while escaping CSI bytes.
+*/
+void
+add_to_input_buf_csi(char_u *str, int len)
+{
+int		i;
+char_u	buf[2];
+for (i = 0; i < len; ++i)
+{
+	add_to_input_buf(str + i, 1);
+	if (str[i] == CSI)
+	{
+	    /* Turn CSI into K_CSI. */
+	    buf[0] = KS_EXTRA;
+	    buf[1] = (int)KE_CSI;
+	    add_to_input_buf(buf, 2);
+	}
+}
+}
+#endif
+#if defined(FEAT_HANGULIN) || defined(PROTO)
+void
+push_raw_key (s, len)
+char_u  *s;
+int	    len;
+{
+while (len--)
+	inbuf[inbufcount++] = *s++;
+}
+#endif
+#if defined(FEAT_GUI) || defined(FEAT_EVAL) || defined(FEAT_EX_EXTRA) \
+	|| defined(PROTO)
+/* Remove everything from the input buffer.  Called when ^C is found */
+void
+trash_input_buf()
+{
+inbufcount = 0;
+}
+#endif
+/*
+* Read as much data from the input buffer as possible up to maxlen, and store
+* it in buf.
+* Note: this function used to be Read() in unix.c
+*/
+int
+read_from_input_buf(buf, maxlen)
+char_u  *buf;
+long    maxlen;
+{
+if (inbufcount == 0)	/* if the buffer is empty, fill it */
+	fill_input_buf(TRUE);
+if (maxlen > inbufcount)
+	maxlen = inbufcount;
+mch_memmove(buf, inbuf, (size_t)maxlen);
+inbufcount -= maxlen;
+if (inbufcount)
+	mch_memmove(inbuf, inbuf + maxlen, (size_t)inbufcount);
+return (int)maxlen;
+}
+void
+fill_input_buf(exit_on_error)
+int	exit_on_error;
+{
+#if defined(UNIX) || defined(OS2) || defined(VMS) || defined(MACOS_X_UNIX)
+int		len;
+int		try;
+static int	did_read_something = FALSE;
+# ifdef FEAT_MBYTE
+static char_u *rest = NULL;	    /* unconverted rest of previous read */
+static int	restlen = 0;
+int		unconverted;
+# endif
+#endif
+#ifdef FEAT_GUI
+if (gui.in_use)
+{
+	gui_mch_update();
+	return;
+}
+#endif
+#if defined(UNIX) || defined(OS2) || defined(VMS) || defined(MACOS_X_UNIX)
+if (vim_is_input_buf_full())
+	return;
+/*
+* Fill_input_buf() is only called when we really need a character.
+* If we can't get any, but there is some in the buffer, just return.
+* If we can't get any, and there isn't any in the buffer, we give up and
+* exit Vim.
+*/
+# ifdef __BEOS__
+/*
+* On the BeBox version (for now), all input is secretly performed within
+* beos_select() which is called from RealWaitForChar().
+*/
+while (!vim_is_input_buf_full() && RealWaitForChar(read_cmd_fd, 0, NULL))
+	    ;
+len = inbufcount;
+inbufcount = 0;
+# else
+#  ifdef FEAT_SNIFF
+if (sniff_request_waiting)
+{
+	add_to_input_buf((char_u *)"\233sniff",6); /* results in K_SNIFF */
+	sniff_request_waiting = 0;
+	want_sniff_request = 0;
+	return;
+}
+#  endif
+# ifdef FEAT_MBYTE
+if (rest != NULL)
+{
+	/* Use remainder of previous call, starts with an invalid character
+	 * that may become valid when reading more. */
+	if (restlen > INBUFLEN - inbufcount)
+	    unconverted = INBUFLEN - inbufcount;
+	else
+	    unconverted = restlen;
+	mch_memmove(inbuf + inbufcount, rest, unconverted);
+	if (unconverted == restlen)
+	{
+	    vim_free(rest);
+	    rest = NULL;
+	}
+	else
+	{
+	    restlen -= unconverted;
+	    mch_memmove(rest, rest + unconverted, restlen);
+	}
+	inbufcount += unconverted;
+}
+else
+	unconverted = 0;
+#endif
+len = 0;	/* to avoid gcc warning */
+for (try = 0; try < 100; ++try)
+{
+#  ifdef VMS
+	len = vms_read(
+#  else
+	len = read(read_cmd_fd,
+#  endif
+	    (char *)inbuf + inbufcount, (size_t)((INBUFLEN - inbufcount)
+#  ifdef FEAT_MBYTE
+		/ input_conv.vc_factor
+#  endif
+		));
+#  if 0
+		)	/* avoid syntax highlight error */
+#  endif
+	if (len > 0 || got_int)
+	    break;
+	/*
+	 * If reading stdin results in an error, continue reading stderr.
+	 * This helps when using "foo | xargs vim".
+	 */
+	if (!did_read_something && !isatty(read_cmd_fd) && read_cmd_fd == 0)
+	{
+	    int m = cur_tmode;
+	    /* We probably set the wrong file descriptor to raw mode.  Switch
+	     * back to cooked mode, use another descriptor and set the mode to
+	     * what it was. */
+	    settmode(TMODE_COOK);
+#ifdef HAVE_DUP
+	    /* Use stderr for stdin, also works for shell commands. */
+	    close(0);
+	    dup(2);
+#else
+	    read_cmd_fd = 2;	/* read from stderr instead of stdin */
+#endif
+	    settmode(m);
+	}
+	if (!exit_on_error)
+	    return;
+}
+# endif
+if (len <= 0 && !got_int)
+	read_error_exit();
+if (len > 0)
+	did_read_something = TRUE;
+if (got_int)
+{
+	/* Interrupted, pretend a CTRL-C was typed. */
+	inbuf[0] = 3;
+	inbufcount = 1;
+}
+else
+{
+# ifdef FEAT_MBYTE
+	/*
+	 * May perform conversion on the input characters.
+	 * Include the unconverted rest of the previous call.
+	 * If there is an incomplete char at the end it is kept for the next
+	 * time, reading more bytes should make conversion possible.
+	 * Don't do this in the unlikely event that the input buffer is too
+	 * small ("rest" still contains more bytes).
+	 */
+	if (input_conv.vc_type != CONV_NONE)
+	{
+	    inbufcount -= unconverted;
+	    len = convert_input_safe(inbuf + inbufcount,
+				     len + unconverted, INBUFLEN - inbufcount,
+				       rest == NULL ? &rest : NULL, &restlen);
+	}
+# endif
+	while (len-- > 0)
+	{
+	    /*
+	     * if a CTRL-C was typed, remove it from the buffer and set got_int
+	     */
+	    if (inbuf[inbufcount] == 3 && ctrl_c_interrupts)
+	    {
+		/* remove everything typed before the CTRL-C */
+		mch_memmove(inbuf, inbuf + inbufcount, (size_t)(len + 1));
+		inbufcount = 0;
+		got_int = TRUE;
+	    }
+	    ++inbufcount;
+	}
+}
+#endif /* UNIX or OS2 or VMS*/
+}
+#endif /* defined(UNIX) || defined(FEAT_GUI) || defined(OS2)  || defined(VMS) */
+/*
+* Exit because of an input read error.
+*/
+void
+read_error_exit()
+{
+if (silent_mode)	/* Normal way to exit for "ex -s" */
+	getout(0);
+STRCPY(IObuff, _("Vim: Error reading input, exiting...\n"));
+preserve_exit();
+}
+#if defined(CURSOR_SHAPE) || defined(PROTO)
+/*
+* May update the shape of the cursor.
+*/
+void
+ui_cursor_shape()
+{
+# ifdef FEAT_GUI
+if (gui.in_use)
+	gui_update_cursor_later();
+# endif
+# ifdef MCH_CURSOR_SHAPE
+mch_update_cursor();
+# endif
+}
+#endif
+#if defined(FEAT_CLIPBOARD) || defined(FEAT_GUI) || defined(FEAT_RIGHTLEFT) \
+	|| defined(PROTO)
+/*
+* Check bounds for column number
+*/
+int
+check_col(col)
+int	    col;
+{
+if (col < 0)
+	return 0;
+if (col >= (int)screen_Columns)
+	return (int)screen_Columns - 1;
+return col;
+}
+/*
+* Check bounds for row number
+*/
+int
+check_row(row)
+int	    row;
+{
+if (row < 0)
+	return 0;
+if (row >= (int)screen_Rows)
+	return (int)screen_Rows - 1;
+return row;
+}
+#endif
+/*
+* Stuff for the X clipboard.  Shared between VMS and Unix.
+*/
+#if defined(FEAT_XCLIPBOARD) || defined(FEAT_GUI_X11) || defined(PROTO)
+# include <X11/Xatom.h>
+# include <X11/Intrinsic.h>
+/*
+* Open the application context (if it hasn't been opened yet).
+* Used for Motif and Athena GUI and the xterm clipboard.
+*/
+void
+open_app_context()
+{
+if (app_context == NULL)
+{
+	XtToolkitInitialize();
+	app_context = XtCreateApplicationContext();
+}
+}
+static Atom	vim_atom;	/* Vim's own special selection format */
+#ifdef FEAT_MBYTE
+static Atom	vimenc_atom;	/* Vim's extended selection format */
+#endif
+static Atom	compound_text_atom;
+static Atom	text_atom;
+static Atom	targets_atom;
+void
+x11_setup_atoms(dpy)
+Display	*dpy;
+{
+vim_atom	       = XInternAtom(dpy, VIM_ATOM_NAME,   False);
+#ifdef FEAT_MBYTE
+vimenc_atom	       = XInternAtom(dpy, VIMENC_ATOM_NAME,False);
+#endif
+compound_text_atom = XInternAtom(dpy, "COMPOUND_TEXT", False);
+text_atom	       = XInternAtom(dpy, "TEXT",	   False);
+targets_atom       = XInternAtom(dpy, "TARGETS",       False);
+clip_star.sel_atom = XA_PRIMARY;
+clip_plus.sel_atom = XInternAtom(dpy, "CLIPBOARD",     False);
+}
+/*
+* X Selection stuff, for cutting and pasting text to other windows.
+*/
+static void  clip_x11_request_selection_cb __ARGS((Widget, XtPointer, Atom *, Atom *, XtPointer, long_u *, int *));
+/* ARGSUSED */
+static void
+clip_x11_request_selection_cb(w, success, sel_atom, type, value, length,
+			      format)
+Widget	w;
+XtPointer	success;
+Atom	*sel_atom;
+Atom	*type;
+XtPointer	value;
+long_u	*length;
+int		*format;
+{
+int		motion_type;
+long_u	len;
+char_u	*p;
+char	**text_list = NULL;
+VimClipboard	*cbd;
+#ifdef FEAT_MBYTE
+char_u	*tmpbuf = NULL;
+#endif
+if (*sel_atom == clip_plus.sel_atom)
+	cbd = &clip_plus;
+else
+	cbd = &clip_star;
+if (value == NULL || *length == 0)
+{
+	clip_free_selection(cbd);	/* ???  [what's the query?] */
+	*(int *)success = FALSE;
+	return;
+}
+motion_type = MCHAR;
+p = (char_u *)value;
+len = *length;
+if (*type == vim_atom)
+{
+	motion_type = *p++;
+	len--;
+}
+#ifdef FEAT_MBYTE
+else if (*type == vimenc_atom)
+{
+	char_u		*enc;
+	vimconv_T	conv;
+	int		convlen;
+	motion_type = *p++;
+	--len;
+	enc = p;
+	p += STRLEN(p) + 1;
+	len -= p - enc;
+	/* If the encoding of the text is different from 'encoding', attempt
+	 * converting it. */
+	conv.vc_type = CONV_NONE;
+	convert_setup(&conv, enc, p_enc);
+	if (conv.vc_type != CONV_NONE)
+	{
+	    convlen = len;	/* Need to use an int here. */
+	    tmpbuf = string_convert(&conv, p, &convlen);
+	    len = convlen;
+	    if (tmpbuf != NULL)
+		p = tmpbuf;
+	    convert_setup(&conv, NULL, NULL);
+	}
+}
+#endif
+else if (*type == compound_text_atom || (
+#ifdef FEAT_MBYTE
+		enc_dbcs != 0 &&
+#endif
+		*type == text_atom))
+{
+	XTextProperty	text_prop;
+	int		n_text = 0;
+	int		status;
+	text_prop.value = (unsigned char *)value;
+	text_prop.encoding = *type;
+	text_prop.format = *format;
+	text_prop.nitems = STRLEN(value);
+	status = XmbTextPropertyToTextList(X_DISPLAY, &text_prop,
+							 &text_list, &n_text);
+	if (status != Success || n_text < 1)
+	{
+	    *(int *)success = FALSE;
+	    return;
+	}
+	p = (char_u *)text_list[0];
+	len = STRLEN(p);
+}
+clip_yank_selection(motion_type, p, (long)len, cbd);
+if (text_list != NULL)
+	XFreeStringList(text_list);
+#ifdef FEAT_MBYTE
+vim_free(tmpbuf);
+#endif
+XtFree((char *)value);
+*(int *)success = TRUE;
+}
+void
+clip_x11_request_selection(myShell, dpy, cbd)
+Widget	myShell;
+Display	*dpy;
+VimClipboard	*cbd;
+{
+XEvent	event;
+Atom	type;
+static int	success;
+int		i;
+int		nbytes = 0;
+char_u	*buffer;
+for (i =
+#ifdef FEAT_MBYTE
+	    0
+#else
+	    1
+#endif
+	    ; i < 5; i++)
+{
+	switch (i)
+	{
+#ifdef FEAT_MBYTE
+	    case 0:  type = vimenc_atom;	break;
+#endif
+	    case 1:  type = vim_atom;		break;
+	    case 2:  type = compound_text_atom; break;
+	    case 3:  type = text_atom;		break;
+	    default: type = XA_STRING;
+	}
+	XtGetSelectionValue(myShell, cbd->sel_atom, type,
+	    clip_x11_request_selection_cb, (XtPointer)&success, CurrentTime);
+	/* Make sure the request for the selection goes out before waiting for
+	 * a response. */
+	XFlush(dpy);
+	/*
+	 * Wait for result of selection request, otherwise if we type more
+	 * characters, then they will appear before the one that requested the
+	 * paste!  Don't worry, we will catch up with any other events later.
+	 */
+	for (;;)
+	{
+	    if (XCheckTypedEvent(dpy, SelectionNotify, &event))
+		break;
+	    /* Do we need this?  Probably not. */
+	    XSync(dpy, False);
+	    /* Bernhard Walle solved a slow paste response in an X terminal by
+	     * adding: usleep(10000); here. */
+	}
+	/* this is where clip_x11_request_selection_cb() is actually called */
+	XtDispatchEvent(&event);
+	if (success)
+	    return;
+}
+/* Final fallback position - use the X CUT_BUFFER0 store */
+buffer = (char_u *)XFetchBuffer(dpy, &nbytes, 0);
+if (nbytes > 0)
+{
+	/* Got something */
+	clip_yank_selection(MCHAR, buffer, (long)nbytes, cbd);
+	XFree((void *)buffer);
+	if (p_verbose > 0)
+	    smsg((char_u *)_("Used CUT_BUFFER0 instead of empty selection") );
+}
+}
+static Boolean	clip_x11_convert_selection_cb __ARGS((Widget, Atom *, Atom *, Atom *, XtPointer *, long_u *, int *));
+/* ARGSUSED */
+static Boolean
+clip_x11_convert_selection_cb(w, sel_atom, target, type, value, length, format)
+Widget	w;
+Atom	*sel_atom;
+Atom	*target;
+Atom	*type;
+XtPointer	*value;
+long_u	*length;
+int		*format;
+{
+char_u	*string;
+char_u	*result;
+int		motion_type;
+VimClipboard	*cbd;
+int		i;
+if (*sel_atom == clip_plus.sel_atom)
+	cbd = &clip_plus;
+else
+	cbd = &clip_star;
+if (!cbd->owned)
+	return False;	    /* Shouldn't ever happen */
+/* requestor wants to know what target types we support */
+if (*target == targets_atom)
+{
+	Atom *array;
+	if ((array = (Atom *)XtMalloc((unsigned)(sizeof(Atom) * 6))) == NULL)
+	    return False;
+	*value = (XtPointer)array;
+	i = 0;
+	array[i++] = XA_STRING;
+	array[i++] = targets_atom;
+#ifdef FEAT_MBYTE
+	array[i++] = vimenc_atom;
+#endif
+	array[i++] = vim_atom;
+	array[i++] = text_atom;
+	array[i++] = compound_text_atom;
+	*type = XA_ATOM;
+	/* This used to be: *format = sizeof(Atom) * 8; but that caused
+	 * crashes on 64 bit machines. (Peter Derr) */
+	*format = 32;
+	*length = i;
+	return True;
+}
+if (       *target != XA_STRING
+#ifdef FEAT_MBYTE
+	    && *target != vimenc_atom
+#endif
+	    && *target != vim_atom
+	    && *target != text_atom
+	    && *target != compound_text_atom)
+	return False;
+clip_get_selection(cbd);
+motion_type = clip_convert_selection(&string, length, cbd);
+if (motion_type < 0)
+	return False;
+/* For our own format, the first byte contains the motion type */
+if (*target == vim_atom)
+	(*length)++;
+#ifdef FEAT_MBYTE
+/* Our own format with encoding: motion 'encoding' NUL text */
+if (*target == vimenc_atom)
+	*length += STRLEN(p_enc) + 2;
+#endif
+*value = XtMalloc((Cardinal)*length);
+result = (char_u *)*value;
+if (result == NULL)
+{
+	vim_free(string);
+	return False;
+}
+if (*target == XA_STRING)
+{
+	mch_memmove(result, string, (size_t)(*length));
+	*type = XA_STRING;
+}
+else if (*target == compound_text_atom
+	    || *target == text_atom)
+{
+	XTextProperty	text_prop;
+	char		*string_nt = (char *)alloc((unsigned)*length + 1);
+	/* create NUL terminated string which XmbTextListToTextProperty wants */
+	mch_memmove(string_nt, string, (size_t)*length);
+	string_nt[*length] = NUL;
+	XmbTextListToTextProperty(X_DISPLAY, (char **)&string_nt, 1,
+					      XCompoundTextStyle, &text_prop);
+	vim_free(string_nt);
+	XtFree(*value);			/* replace with COMPOUND text */
+	*value = (XtPointer)(text_prop.value);	/*    from plain text */
+	*length = text_prop.nitems;
+	*type = compound_text_atom;
+}
+#ifdef FEAT_MBYTE
+else if (*target == vimenc_atom)
+{
+	int l = STRLEN(p_enc);
+	result[0] = motion_type;
+	STRCPY(result + 1, p_enc);
+	mch_memmove(result + l + 2, string, (size_t)(*length - l - 2));
+	*type = vimenc_atom;
+}
+#endif
+else
+{
+	result[0] = motion_type;
+	mch_memmove(result + 1, string, (size_t)(*length - 1));
+	*type = vim_atom;
+}
+*format = 8;	    /* 8 bits per char */
+vim_free(string);
+return True;
+}
+static void  clip_x11_lose_ownership_cb __ARGS((Widget, Atom *));
+/* ARGSUSED */
+static void
+clip_x11_lose_ownership_cb(w, sel_atom)
+Widget  w;
+Atom    *sel_atom;
+{
+if (*sel_atom == clip_plus.sel_atom)
+	clip_lose_selection(&clip_plus);
+else
+	clip_lose_selection(&clip_star);
+}
+void
+clip_x11_lose_selection(myShell, cbd)
+Widget	myShell;
+VimClipboard	*cbd;
+{
+XtDisownSelection(myShell, cbd->sel_atom, CurrentTime);
+}
+int
+clip_x11_own_selection(myShell, cbd)
+Widget	myShell;
+VimClipboard	*cbd;
+{
+if (XtOwnSelection(myShell, cbd->sel_atom, CurrentTime,
+	    clip_x11_convert_selection_cb, clip_x11_lose_ownership_cb,
+							       NULL) == False)
+	return FAIL;
+return OK;
+}
+/*
+* Send the current selection to the clipboard.  Do nothing for X because we
+* will fill in the selection only when requested by another app.
+*/
+/*ARGSUSED*/
+void
+clip_x11_set_selection(cbd)
+VimClipboard *cbd;
+{
+}
+#endif
+#if defined(FEAT_MOUSE) || defined(PROTO)
+/*
+* Move the cursor to the specified row and column on the screen.
+* Change current window if neccesary.	Returns an integer with the
+* CURSOR_MOVED bit set if the cursor has moved or unset otherwise.
+*
+* The MOUSE_FOLD_CLOSE bit is set when clicked on the '-' in a fold column.
+* The MOUSE_FOLD_OPEN bit is set when clicked on the '+' in a fold column.
+*
+* If flags has MOUSE_FOCUS, then the current window will not be changed, and
+* if the mouse is outside the window then the text will scroll, or if the
+* mouse was previously on a status line, then the status line may be dragged.
+*
+* If flags has MOUSE_MAY_VIS, then VIsual mode will be started before the
+* cursor is moved unless the cursor was on a status line.
+* This function returns one of IN_UNKNOWN, IN_BUFFER, IN_STATUS_LINE or
+* IN_SEP_LINE depending on where the cursor was clicked.
+*
+* If flags has MOUSE_MAY_STOP_VIS, then Visual mode will be stopped, unless
+* the mouse is on the status line of the same window.
+*
+* If flags has MOUSE_DID_MOVE, nothing is done if the mouse didn't move since
+* the last call.
+*
+* If flags has MOUSE_SETPOS, nothing is done, only the current position is
+* remembered.
+*/
+int
+jump_to_mouse(flags, inclusive, which_button)
+int		flags;
+int		*inclusive;	/* used for inclusive operator, can be NULL */
+int		which_button;	/* MOUSE_LEFT, MOUSE_RIGHT, MOUSE_MIDDLE */
+{
+static int	on_status_line = 0;	/* #lines below bottom of window */
+#ifdef FEAT_VERTSPLIT
+static int	on_sep_line = 0;	/* on separator right of window */
+#endif
+static int	prev_row = -1;
+static int	prev_col = -1;
+static win_T *dragwin = NULL;	/* window being dragged */
+static int	did_drag = FALSE;	/* drag was noticed */
+win_T	*wp, *old_curwin;
+pos_T	old_cursor;
+int		count;
+int		first;
+int		row = mouse_row;
+int		col = mouse_col;
+#ifdef FEAT_FOLDING
+int		mouse_char;
+#endif
+mouse_past_bottom = FALSE;
+mouse_past_eol = FALSE;
+if (flags & MOUSE_RELEASED)
+{
+	/* On button release we may change window focus if positioned on a
+	 * status line and no dragging happened. */
+	if (dragwin != NULL && !did_drag)
+	    flags &= ~(MOUSE_FOCUS | MOUSE_DID_MOVE);
+	dragwin = NULL;
+	did_drag = FALSE;
+}
+if ((flags & MOUSE_DID_MOVE)
+	    && prev_row == mouse_row
+	    && prev_col == mouse_col)
+{
+retnomove:
+	/* before moving the cursor for a left click wich is NOT in a status
+	 * line, stop Visual mode */
+	if (on_status_line)
+	    return IN_STATUS_LINE;
+#ifdef FEAT_VERTSPLIT
+	if (on_sep_line)
+	    return IN_SEP_LINE;
+#endif
+#ifdef FEAT_VISUAL
+	if (flags & MOUSE_MAY_STOP_VIS)
+	{
+	    end_visual_mode();
+	    redraw_curbuf_later(INVERTED);	/* delete the inversion */
+	}
+#endif
+#if defined(FEAT_CMDWIN) && defined(FEAT_CLIPBOARD)
+	/* Continue a modeless selection in another window. */
+	if (cmdwin_type != 0 && row < W_WINROW(curwin))
+	    return IN_OTHER_WIN;
+#endif
+	return IN_BUFFER;
+}
+prev_row = mouse_row;
+prev_col = mouse_col;
+if (flags & MOUSE_SETPOS)
+	goto retnomove;				/* ugly goto... */
+#ifdef FEAT_FOLDING
+/* Remember the character under the mouse, it might be a '-' or '+' in the
+* fold column. */
+if (row >= 0 && row < Rows && col >= 0 && col <= Columns)
+	mouse_char = ScreenLines[LineOffset[row] + col];
+else
+	mouse_char = ' ';
+#endif
+old_curwin = curwin;
+old_cursor = curwin->w_cursor;
+if (!(flags & MOUSE_FOCUS))
+{
+	if (row < 0 || col < 0)			/* check if it makes sense */
+	    return IN_UNKNOWN;
+#ifdef FEAT_WINDOWS
+	/* find the window where the row is in */
+	wp = mouse_find_win(&row, &col);
+#else
+	wp = firstwin;
+#endif
+	dragwin = NULL;
+	/*
+	 * winpos and height may change in win_enter()!
+	 */
+	if (row >= wp->w_height)		/* In (or below) status line */
+	{
+	    on_status_line = row - wp->w_height + 1;
+	    dragwin = wp;
+	}
+	else
+	    on_status_line = 0;
+#ifdef FEAT_VERTSPLIT
+	if (col >= wp->w_width)		/* In separator line */
+	{
+	    on_sep_line = col - wp->w_width + 1;
+	    dragwin = wp;
+	}
+	else
+	    on_sep_line = 0;
+	/* The rightmost character of the status line might be a vertical
+	 * separator character if there is no connecting window to the right. */
+	if (on_status_line && on_sep_line)
+	{
+	    if (stl_connected(wp))
+		on_sep_line = 0;
+	    else
+		on_status_line = 0;
+	}
+#endif
+#ifdef FEAT_VISUAL
+	/* Before jumping to another buffer, or moving the cursor for a left
+	 * click, stop Visual mode. */
+	if (VIsual_active
+		&& (wp->w_buffer != curwin->w_buffer
+		    || (!on_status_line
+# ifdef FEAT_VERTSPLIT
+			&& !on_sep_line
+# endif
+# ifdef FEAT_FOLDING
+			&& (
+#  ifdef FEAT_RIGHTLEFT
+			    wp->w_p_rl ? col < W_WIDTH(wp) - wp->w_p_fdc :
+#  endif
+			    col >= wp->w_p_fdc
+#  ifdef FEAT_CMDWIN
+				  + (cmdwin_type == 0 && wp == curwin ? 0 : 1)
+#  endif
+			    )
+# endif
+			&& (flags & MOUSE_MAY_STOP_VIS))))
+	{
+	    end_visual_mode();
+	    redraw_curbuf_later(INVERTED);	/* delete the inversion */
+	}
+#endif
+#ifdef FEAT_CMDWIN
+	if (cmdwin_type != 0 && wp != curwin)
+	{
+	    /* A click outside the command-line window: Use modeless
+	     * selection if possible.  Allow dragging the status line of
+	     * windows just above the command-line window. */
+	    if (wp->w_winrow + wp->w_height
+		       != curwin->w_prev->w_winrow + curwin->w_prev->w_height)
+	    {
+		on_status_line = 0;
+		dragwin = NULL;
+	    }
+# ifdef FEAT_VERTSPLIT
+	    on_sep_line = 0;
+# endif
+# ifdef FEAT_CLIPBOARD
+	    if (on_status_line)
+		return IN_STATUS_LINE;
+	    return IN_OTHER_WIN;
+# else
+	    row = 0;
+	    col += wp->w_wincol;
+	    wp = curwin;
+# endif
+	}
+#endif
+#ifdef FEAT_WINDOWS
+	/* Only change window focus when not clicking on or dragging the
+	 * status line.  Do change focus when releasing the mouse button
+	 * (MOUSE_FOCUS was set above if we dragged first). */
+	if (dragwin == NULL || (flags & MOUSE_RELEASED))
+	    win_enter(wp, TRUE);		/* can make wp invalid! */
+# ifdef CHECK_DOUBLE_CLICK
+	/* set topline, to be able to check for double click ourselves */
+	if (curwin != old_curwin)
+	    set_mouse_topline(curwin);
+# endif
+#endif
+	if (on_status_line)			/* In (or below) status line */
+	{
+	    /* Don't use start_arrow() if we're in the same window */
+	    if (curwin == old_curwin)
+		return IN_STATUS_LINE;
+	    else
+		return IN_STATUS_LINE | CURSOR_MOVED;
+	}
+#ifdef FEAT_VERTSPLIT
+	if (on_sep_line)			/* In (or below) status line */
+	{
+	    /* Don't use start_arrow() if we're in the same window */
+	    if (curwin == old_curwin)
+		return IN_SEP_LINE;
+	    else
+		return IN_SEP_LINE | CURSOR_MOVED;
+	}
+#endif
+	curwin->w_cursor.lnum = curwin->w_topline;
+#ifdef FEAT_GUI
+	/* remember topline, needed for double click */
+	gui_prev_topline = curwin->w_topline;
+# ifdef FEAT_DIFF
+	gui_prev_topfill = curwin->w_topfill;
+# endif
+#endif
+}
+else if (on_status_line && which_button == MOUSE_LEFT)
+{
+#ifdef FEAT_WINDOWS
+	if (dragwin != NULL)
+	{
+	    /* Drag the status line */
+	    count = row - dragwin->w_winrow - dragwin->w_height + 1
+							     - on_status_line;
+	    win_drag_status_line(dragwin, count);
+	    did_drag |= count;
+	}
+#endif
+	return IN_STATUS_LINE;			/* Cursor didn't move */
+}
+#ifdef FEAT_VERTSPLIT
+else if (on_sep_line && which_button == MOUSE_LEFT)
+{
+	if (dragwin != NULL)
+	{
+	    /* Drag the separator column */
+	    count = col - dragwin->w_wincol - dragwin->w_width + 1
+								- on_sep_line;
+	    win_drag_vsep_line(dragwin, count);
+	    did_drag |= count;
+	}
+	return IN_SEP_LINE;			/* Cursor didn't move */
+}
+#endif
+else /* keep_window_focus must be TRUE */
+{
+#ifdef FEAT_VISUAL
+	/* before moving the cursor for a left click, stop Visual mode */
+	if (flags & MOUSE_MAY_STOP_VIS)
+	{
+	    end_visual_mode();
+	    redraw_curbuf_later(INVERTED);	/* delete the inversion */
+	}
+#endif
+#if defined(FEAT_CMDWIN) && defined(FEAT_CLIPBOARD)
+	/* Continue a modeless selection in another window. */
+	if (cmdwin_type != 0 && row < W_WINROW(curwin))
+	    return IN_OTHER_WIN;
+#endif
+	row -= W_WINROW(curwin);
+#ifdef FEAT_VERTSPLIT
+	col -= W_WINCOL(curwin);
+#endif
+	/*
+	 * When clicking beyond the end of the window, scroll the screen.
+	 * Scroll by however many rows outside the window we are.
+	 */
+	if (row < 0)
+	{
+	    count = 0;
+	    for (first = TRUE; curwin->w_topline > 1; )
+	    {
+#ifdef FEAT_DIFF
+		if (curwin->w_topfill < diff_check(curwin, curwin->w_topline))
+		    ++count;
+		else
+#endif
+		    count += plines(curwin->w_topline - 1);
+		if (!first && count > -row)
+		    break;
+		first = FALSE;
+#ifdef FEAT_FOLDING
+		hasFolding(curwin->w_topline, &curwin->w_topline, NULL);
+#endif
+#ifdef FEAT_DIFF
+		if (curwin->w_topfill < diff_check(curwin, curwin->w_topline))
+		    ++curwin->w_topfill;
+		else
+#endif
+		{
+		    --curwin->w_topline;
+#ifdef FEAT_DIFF
+		    curwin->w_topfill = 0;
+#endif
+		}
+	    }
+#ifdef FEAT_DIFF
+	    check_topfill(curwin, FALSE);
+#endif
+	    curwin->w_valid &=
+		      ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP);
+	    redraw_later(VALID);
+	    row = 0;
+	}
+	else if (row >= curwin->w_height)
+	{
+	    count = 0;
+	    for (first = TRUE; curwin->w_topline < curbuf->b_ml.ml_line_count; )
+	    {
+#ifdef FEAT_DIFF
+		if (curwin->w_topfill > 0)
+		    ++count;
+		else
+#endif
+		    count += plines(curwin->w_topline);
+		if (!first && count > row - curwin->w_height + 1)
+		    break;
+		first = FALSE;
+#ifdef FEAT_FOLDING
+		if (hasFolding(curwin->w_topline, NULL, &curwin->w_topline)
+			&& curwin->w_topline == curbuf->b_ml.ml_line_count)
+		    break;
+#endif
+#ifdef FEAT_DIFF
+		if (curwin->w_topfill > 0)
+		    --curwin->w_topfill;
+		else
+#endif
+		{
+		    ++curwin->w_topline;
+#ifdef FEAT_DIFF
+		    curwin->w_topfill =
+				   diff_check_fill(curwin, curwin->w_topline);
+#endif
+		}
+	    }
+#ifdef FEAT_DIFF
+	    check_topfill(curwin, FALSE);
+#endif
+	    redraw_later(VALID);
+	    curwin->w_valid &=
+		      ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP);
+	    row = curwin->w_height - 1;
+	}
+	else if (row == 0)
+	{
+	    /* When dragging the mouse, while the text has been scrolled up as
+	     * far as it goes, moving the mouse in the top line should scroll
+	     * the text down (done later when recomputing w_topline). */
+	    if (mouse_dragging
+		    && curwin->w_cursor.lnum
+				       == curwin->w_buffer->b_ml.ml_line_count
+		    && curwin->w_cursor.lnum == curwin->w_topline)
+		curwin->w_valid &= ~(VALID_TOPLINE);
+	}
+}
+#ifdef FEAT_FOLDING
+/* Check for position outside of the fold column. */
+if (
+# ifdef FEAT_RIGHTLEFT
+	    curwin->w_p_rl ? col < W_WIDTH(curwin) - curwin->w_p_fdc :
+# endif
+	    col >= curwin->w_p_fdc
+#  ifdef FEAT_CMDWIN
+				+ (cmdwin_type == 0 ? 0 : 1)
+#  endif
+)
+	mouse_char = ' ';
+#endif
+/* compute the position in the buffer line from the posn on the screen */
+if (mouse_comp_pos(curwin, &row, &col, &curwin->w_cursor.lnum))
+	mouse_past_bottom = TRUE;
+#ifdef FEAT_VISUAL
+/* Start Visual mode before coladvance(), for when 'sel' != "old" */
+if ((flags & MOUSE_MAY_VIS) && !VIsual_active)
+{
+	check_visual_highlight();
+	VIsual = old_cursor;
+	VIsual_active = TRUE;
+	VIsual_reselect = TRUE;
+	/* if 'selectmode' contains "mouse", start Select mode */
+	may_start_select('o');
+	setmouse();
+	if (p_smd)
+	    redraw_cmdline = TRUE;	/* show visual mode later */
+}
+#endif
+curwin->w_curswant = col;
+curwin->w_set_curswant = FALSE;	/* May still have been TRUE */
+if (coladvance(col) == FAIL)	/* Mouse click beyond end of line */
+{
+	if (inclusive != NULL)
+	    *inclusive = TRUE;
+	mouse_past_eol = TRUE;
+}
+else if (inclusive != NULL)
+	*inclusive = FALSE;
+count = IN_BUFFER;
+if (curwin != old_curwin || curwin->w_cursor.lnum != old_cursor.lnum
+	    || curwin->w_cursor.col != old_cursor.col)
+	count |= CURSOR_MOVED;		/* Cursor has moved */
+#ifdef FEAT_FOLDING
+if (mouse_char == '+')
+	count |= MOUSE_FOLD_OPEN;
+else if (mouse_char != ' ')
+	count |= MOUSE_FOLD_CLOSE;
+#endif
+return count;
+}
+/*
+* Compute the position in the buffer line from the posn on the screen in
+* window "win".
+* Returns TRUE if the position is below the last line.
+*/
+int
+mouse_comp_pos(win, rowp, colp, lnump)
+win_T	*win;
+int		*rowp;
+int		*colp;
+linenr_T	*lnump;
+{
+int		col = *colp;
+int		row = *rowp;
+linenr_T	lnum;
+int		retval = FALSE;
+int		off;
+int		count;
+#ifdef FEAT_RIGHTLEFT
+if (win->w_p_rl)
+	col = W_WIDTH(win) - 1 - col;
+#endif
+lnum = win->w_topline;
+while (row > 0)
+{
+#ifdef FEAT_DIFF
+	/* Don't include filler lines in "count" */
+	if (win->w_p_diff && !hasFoldingWin(win, lnum, NULL, NULL, TRUE, NULL))
+	{
+	    if (lnum == win->w_topline)
+		row -= win->w_topfill;
+	    else
+		row -= diff_check_fill(win, lnum);
+	    count = plines_win_nofill(win, lnum, TRUE);
+	}
+	else
+#endif
+	    count = plines_win(win, lnum, TRUE);
+	if (count > row)
+	    break;	/* Position is in this buffer line. */
+#ifdef FEAT_FOLDING
+	(void)hasFoldingWin(win, lnum, NULL, &lnum, TRUE, NULL);
+#endif
+	if (lnum == win->w_buffer->b_ml.ml_line_count)
+	{
+	    retval = TRUE;
+	    break;		/* past end of file */
+	}
+	row -= count;
+	++lnum;
+}
+if (!retval)
+{
+	/* Compute the column without wrapping. */
+	off = win_col_off(win) - win_col_off2(win);
+	if (col < off)
+	    col = off;
+	col += row * (W_WIDTH(win) - off);
+	/* add skip column (for long wrapping line) */
+	col += win->w_skipcol;
+}
+if (!win->w_p_wrap)
+	col += win->w_leftcol;
+/* skip line number and fold column in front of the line */
+col -= win_col_off(win);
+if (col < 0)
+{
+#ifdef FEAT_NETBEANS_INTG
+	if (usingNetbeans)
+	    netbeans_gutter_click(lnum);
+#endif
+	col = 0;
+}
+*colp = col;
+*rowp = row;
+*lnump = lnum;
+return retval;
+}
+#if defined(FEAT_WINDOWS) || defined(PROTO)
+/*
+* Find the window at screen position "*rowp" and "*colp".  The positions are
+* updated to become relative to the top-left of the window.
+*/
+/*ARGSUSED*/
+win_T *
+mouse_find_win(rowp, colp)
+int		*rowp;
+int		*colp;
+{
+frame_T	*fp;
+fp = topframe;
+for (;;)
+{
+	if (fp->fr_layout == FR_LEAF)
+	    break;
+#ifdef FEAT_VERTSPLIT
+	if (fp->fr_layout == FR_ROW)
+	{
+	    for (fp = fp->fr_child; fp->fr_next != NULL; fp = fp->fr_next)
+	    {
+		if (*colp < fp->fr_width)
+		    break;
+		*colp -= fp->fr_width;
+	    }
+	}
+#endif
+	else    /* fr_layout == FR_COL */
+	{
+	    for (fp = fp->fr_child; fp->fr_next != NULL; fp = fp->fr_next)
+	    {
+		if (*rowp < fp->fr_height)
+		    break;
+		*rowp -= fp->fr_height;
+	    }
+	}
+}
+return fp->fr_win;
+}
+#endif
+#if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_GTK) || defined (FEAT_GUI_MAC) \
+	|| defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MSWIN) \
+	|| defined(FEAT_GUI_PHOTON) || defined(PROTO)
+/*
+* Translate window coordinates to buffer position without any side effects
+*/
+int
+get_fpos_of_mouse(mpos)
+pos_T	*mpos;
+{
+win_T	*wp;
+int		row = mouse_row;
+int		col = mouse_col;
+if (row < 0 || col < 0)		/* check if it makes sense */
+	return IN_UNKNOWN;
+#ifdef FEAT_WINDOWS
+/* find the window where the row is in */
+wp = mouse_find_win(&row, &col);
+#else
+wp = firstwin;
+#endif
+/*
+* winpos and height may change in win_enter()!
+*/
+if (row >= wp->w_height)	/* In (or below) status line */
+	return IN_STATUS_LINE;
+#ifdef FEAT_VERTSPLIT
+if (col >= wp->w_width)	/* In vertical separator line */
+	return IN_SEP_LINE;
+#endif
+if (wp != curwin)
+	return IN_UNKNOWN;
+/* compute the position in the buffer line from the posn on the screen */
+if (mouse_comp_pos(curwin, &row, &col, &mpos->lnum))
+	return IN_STATUS_LINE; /* past bottom */
+mpos->col = vcol2col(wp, mpos->lnum, col);
+if (mpos->col > 0)
+	--mpos->col;
+return IN_BUFFER;
+}
+/*
+* Convert a virtual (screen) column to a character column.
+* The first column is one.
+*/
+int
+vcol2col(wp, lnum, vcol)
+win_T	*wp;
+linenr_T	lnum;
+int		vcol;
+{
+/* try to advance to the specified column */
+int		col = 0;
+int		count = 0;
+char_u	*ptr;
+ptr = ml_get_buf(wp->w_buffer, lnum, FALSE);
+while (count <= vcol && *ptr != NUL)
+{
+	++col;
+	count += win_lbr_chartabsize(wp, ptr, count, NULL);
+# ifdef FEAT_MBYTE
+	if (has_mbyte)
+	    ptr += (*mb_ptr2len_check)(ptr);
+	else
+# endif
+	    ++ptr;
+}
+return col;
+}
+#endif
+#endif /* FEAT_MOUSE */
+#if defined(FEAT_GUI) || defined(WIN3264) || defined(PROTO)
+/*
+* Called when focus changed.  Used for the GUI or for systems where this can
+* be done in the console (Win32).
+*/
+void
+ui_focus_change(in_focus)
+int		in_focus;	/* TRUE if focus gained. */
+{
+static time_t	last_time = (time_t)0;
+int			need_redraw = FALSE;
+/* When activated: Check if any file was modified outside of Vim.
+* Only do this when not done within the last two seconds (could get
+* several events in a row). */
+if (in_focus && last_time + 2 < time(NULL))
+{
+	need_redraw = check_timestamps(
+# ifdef FEAT_GUI
+		gui.in_use
+# else
+		FALSE
+# endif
+		);
+	last_time = time(NULL);
+}
+#ifdef FEAT_AUTOCMD
+/*
+* Fire the focus gained/lost autocommand.
+*/
+need_redraw |= apply_autocmds(in_focus ? EVENT_FOCUSGAINED
+				: EVENT_FOCUSLOST, NULL, NULL, FALSE, curbuf);
+#endif
+if (need_redraw)
+{
+	/* Something was executed, make sure the cursor is put back where it
+	 * belongs. */
+	need_wait_return = FALSE;
+	if (State & CMDLINE)
+	    redrawcmdline();
+	else if (State == HITRETURN || State == SETWSIZE || State == ASKMORE
+		|| State == EXTERNCMD || State == CONFIRM || exmode_active)
+	    repeat_message();
+	else if ((State & NORMAL) || (State & INSERT))
+	{
+	    if (must_redraw != 0)
+		update_screen(0);
+	    setcursor();
+	}
+	cursor_on();	    /* redrawing may have switched it off */
+	out_flush();
+# ifdef FEAT_GUI
+	if (gui.in_use)
+	{
+	    gui_update_cursor(FALSE, TRUE);
+	    gui_update_scrollbars(FALSE);
+	}
+# endif
+}
+#ifdef FEAT_TITLE
+/* File may have been changed from 'readonly' to 'noreadonly' */
+if (need_maketitle)
+	maketitle();
+#endif
+}
+#endif
+#if defined(USE_IM_CONTROL) || defined(PROTO)
+/*
+* Save current Input Method status to specified place.
+*/
+void
+im_save_status(psave)
+long *psave;
+{
+/* Don't save when 'imdisable' is set or "xic" is NULL, IM is always
+* disabled then (but might start later).
+* Also don't save when inside a mapping, vgetc_im_active has not been set
+* then.
+* And don't save when the keys were stuffed (e.g., for a "." command).
+* And don't save when the GUI is running but our window doesn't have
+* input focus (e.g., when a find dialog is open). */
+if (!p_imdisable && KeyTyped && !KeyStuffed
+# ifdef FEAT_XIM
+	    && xic != NULL
+# endif
+# ifdef FEAT_GUI
+	    && (!gui.in_use || gui.in_focus)
+# endif
+	)
+{
+	/* Do save when IM is on, or IM is off and saved status is on. */
+	if (vgetc_im_active)
+	    *psave = B_IMODE_IM;
+	else if (*psave == B_IMODE_IM)
+	    *psave = B_IMODE_NONE;
+}
+}
+#endif

Mercurial > vim

comparison src/ui.c @ 7:3fc0f57ecb91 v7.0001