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ui.c
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ui.c
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/* 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(UNIX) || defined(VMS) || 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 FEAT_PROFILE
if (do_profiling == PROF_YES && wtime != 0)
prof_inchar_enter();
#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, (wtime >= 0 && wtime < 10)
? 10L : wtime, tb_change_cnt);
if (retval > 0 || typebuf_changed(tb_change_cnt) || wtime >= 0)
goto theend;
# endif
if (wtime == -1 && ++count == 1000)
read_error_exit();
buf[0] = CAR;
retval = 1;
goto theend;
}
#endif
/* If we are going to wait for some time or block... */
if (wtime == -1 || wtime > 100L)
{
/* ... allow signals to kill us. */
(void)vim_handle_signal(SIGNAL_UNBLOCK);
/* ... 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)
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
if (wtime == -1 || wtime > 100L)
/* block SIGHUP et al. */
(void)vim_handle_signal(SIGNAL_BLOCK);
ctrl_c_interrupts = TRUE;
#ifdef NO_CONSOLE_INPUT
theend:
#endif
#ifdef FEAT_PROFILE
if (do_profiling == PROF_YES && wtime != 0)
prof_inchar_exit();
#endif
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
, RESIZE_BOTH);
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)(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
|| get_real_state() == SELECTMODE)
&& 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
|| get_real_state() == SELECTMODE)
&& 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.
*/