Beispiel #1
0
    static PyObject *
WindowGetattro(PyObject *self, PyObject *nameobj)
{
    WindowObject *this = (WindowObject *)(self);

    char *name = "";
    if (PyUnicode_Check(nameobj))
	name = _PyUnicode_AsString(nameobj);


    if (CheckWindow(this))
	return NULL;

    if (strcmp(name, "buffer") == 0)
	return (PyObject *)BufferNew(this->win->w_buffer);
    else if (strcmp(name, "cursor") == 0)
    {
	pos_T *pos = &this->win->w_cursor;

	return Py_BuildValue("(ll)", (long)(pos->lnum), (long)(pos->col));
    }
    else if (strcmp(name, "height") == 0)
	return Py_BuildValue("l", (long)(this->win->w_height));
#ifdef FEAT_VERTSPLIT
    else if (strcmp(name, "width") == 0)
	return Py_BuildValue("l", (long)(W_WIDTH(this->win)));
#endif
    else if (strcmp(name,"__members__") == 0)
	return Py_BuildValue("[sss]", "buffer", "cursor", "height");
    else
	return PyObject_GenericGetAttr(self, nameobj);
}
Beispiel #2
0
    static PyObject *
WindowGetattr(PyObject *self, char *name)
{
    WindowObject *this = (WindowObject *)(self);

    if (CheckWindow(this))
	return NULL;

    if (strcmp(name, "buffer") == 0)
	return (PyObject *)BufferNew(this->win->w_buffer);
    else if (strcmp(name, "cursor") == 0)
    {
	pos_T *pos = &this->win->w_cursor;

	return Py_BuildValue("(ll)", (long)(pos->lnum), (long)(pos->col));
    }
    else if (strcmp(name, "height") == 0)
	return Py_BuildValue("l", (long)(this->win->w_height));
#ifdef FEAT_VERTSPLIT
    else if (strcmp(name, "width") == 0)
	return Py_BuildValue("l", (long)(W_WIDTH(this->win)));
#endif
    else if (strcmp(name,"__members__") == 0)
	return Py_BuildValue("[sss]", "buffer", "cursor", "height");
    else
	return Py_FindMethod(WindowMethods, self, name);
}
Beispiel #3
0
    static int
luaV_window_index(lua_State *L)
{
    win_T *w = (win_T *) luaV_checkvalid(L, luaV_Window, 1);
    const char *s = luaL_checkstring(L, 2);
    if (strncmp(s, "buffer", 6) == 0)
	luaV_pushbuffer(L, w->w_buffer);
    else if (strncmp(s, "line", 4) == 0)
	lua_pushinteger(L, w->w_cursor.lnum);
    else if (strncmp(s, "col", 3) == 0)
	lua_pushinteger(L, w->w_cursor.col + 1);
#ifdef FEAT_VERTSPLIT
    else if (strncmp(s, "width", 5) == 0)
	lua_pushinteger(L, W_WIDTH(w));
#endif
    else if (strncmp(s, "height", 6) == 0)
	lua_pushinteger(L, w->w_height);
    /* methods */
    else if (strncmp(s,   "next", 4) == 0
	    || strncmp(s, "previous", 8) == 0
	    || strncmp(s, "isvalid", 7) == 0)
    {
	lua_getmetatable(L, 1);
	lua_getfield(L, -1, s);
    }
    else
	lua_pushnil(L);
    return 1;
}
Beispiel #4
0
/*
 * When curwin->w_leftcol has changed, adjust the cursor position.
 * Return true if the cursor was moved.
 */
bool leftcol_changed(void)
{
  // TODO(hinidu): I think it should be colnr_T or int, but p_siso is long.
  // Perhaps we can change p_siso to int.
  int64_t lastcol;
  colnr_T s, e;
  bool retval = false;

  changed_cline_bef_curs();
  lastcol = curwin->w_leftcol + W_WIDTH(curwin) - curwin_col_off() - 1;
  validate_virtcol();

  /*
   * If the cursor is right or left of the screen, move it to last or first
   * character.
   */
  if (curwin->w_virtcol > (colnr_T)(lastcol - p_siso)) {
    retval = true;
    coladvance((colnr_T)(lastcol - p_siso));
  } else if (curwin->w_virtcol < curwin->w_leftcol + p_siso) {
    retval = true;
    coladvance((colnr_T)(curwin->w_leftcol + p_siso));
  }

  /*
   * If the start of the character under the cursor is not on the screen,
   * advance the cursor one more char.  If this fails (last char of the
   * line) adjust the scrolling.
   */
  getvvcol(curwin, &curwin->w_cursor, &s, NULL, &e);
  if (e > (colnr_T)lastcol) {
    retval = true;
    coladvance(s - 1);
  } else if (s < curwin->w_leftcol) {
    retval = true;
    if (coladvance(e + 1) == FAIL) {    /* there isn't another character */
      curwin->w_leftcol = s;            /* adjust w_leftcol instead */
      changed_cline_bef_curs();
    }
  }

  if (retval)
    curwin->w_set_curswant = true;
  redraw_later(NOT_VALID);
  return retval;
}
Beispiel #5
0
/*
 * Get the text and position to be evaluated for "beval".
 * If "getword" is true the returned text is not the whole line but the
 * relevant word in allocated memory.
 * Returns OK or FAIL.
 */
    int
get_beval_info(
    BalloonEval	*beval,
    int		getword,
    win_T	**winp,
    linenr_T	*lnump,
    char_u	**textp,
    int		*colp)
{
    win_T	*wp;
    int		row, col;
    char_u	*lbuf;
    linenr_T	lnum;

    *textp = NULL;
    row = Y_2_ROW(beval->y);
    col = X_2_COL(beval->x);
#ifdef FEAT_WINDOWS
    wp = mouse_find_win(&row, &col);
#else
    wp = firstwin;
#endif
    if (wp != NULL && row < wp->w_height && col < W_WIDTH(wp))
    {
	/* Found a window and the cursor is in the text.  Now find the line
	 * number. */
	if (!mouse_comp_pos(wp, &row, &col, &lnum))
	{
	    /* Not past end of the file. */
	    lbuf = ml_get_buf(wp->w_buffer, lnum, FALSE);
	    if (col <= win_linetabsize(wp, lbuf, (colnr_T)MAXCOL))
	    {
		/* Not past end of line. */
		if (getword)
		{
		    /* For Netbeans we get the relevant part of the line
		     * instead of the whole line. */
		    int		len;
		    pos_T	*spos = NULL, *epos = NULL;

		    if (VIsual_active)
		    {
			if (lt(VIsual, curwin->w_cursor))
			{
			    spos = &VIsual;
			    epos = &curwin->w_cursor;
			}
			else
			{
			    spos = &curwin->w_cursor;
			    epos = &VIsual;
			}
		    }

		    col = vcol2col(wp, lnum, col);

		    if (VIsual_active
			    && wp->w_buffer == curwin->w_buffer
			    && (lnum == spos->lnum
				? col >= (int)spos->col
				: lnum > spos->lnum)
			    && (lnum == epos->lnum
				? col <= (int)epos->col
				: lnum < epos->lnum))
		    {
			/* Visual mode and pointing to the line with the
			 * Visual selection: return selected text, with a
			 * maximum of one line. */
			if (spos->lnum != epos->lnum || spos->col == epos->col)
			    return FAIL;

			lbuf = ml_get_buf(curwin->w_buffer, VIsual.lnum, FALSE);
			len = epos->col - spos->col;
			if (*p_sel != 'e')
			    len += MB_PTR2LEN(lbuf + epos->col);
			lbuf = vim_strnsave(lbuf + spos->col, len);
			lnum = spos->lnum;
			col = spos->col;
		    }
		    else
		    {
			/* Find the word under the cursor. */
			++emsg_off;
			len = find_ident_at_pos(wp, lnum, (colnr_T)col, &lbuf,
					FIND_IDENT + FIND_STRING + FIND_EVAL);
			--emsg_off;
			if (len == 0)
			    return FAIL;
			lbuf = vim_strnsave(lbuf, len);
		    }
		}

		*winp = wp;
		*lnump = lnum;
		*textp = lbuf;
		*colp = col;
		beval->ts = wp->w_buffer->b_p_ts;
		return OK;
	    }
	}
    }

    return FAIL;
}
Beispiel #6
0
/// Show the popup menu with items "array[size]".
/// "array" must remain valid until pum_undisplay() is called!
/// When possible the leftmost character is aligned with screen column "col".
/// The menu appears above the screen line "row" or at "row" + "height" - 1.
///
/// @param array
/// @param size
/// @param selected index of initially selected item, none if out of range
void pum_display(pumitem_T *array, int size, int selected)
{
  int w;
  int def_width;
  int max_width;
  int kind_width;
  int extra_width;
  int i;
  int top_clear;
  int row;
  int context_lines;
  int col;
  int above_row = cmdline_row;
  int redo_count = 0;

redo:
  def_width = PUM_DEF_WIDTH;
  max_width = 0;
  kind_width = 0;
  extra_width = 0;

  // Pretend the pum is already there to avoid that must_redraw is set when
  // 'cuc' is on.
  pum_array = (pumitem_T *)1;
  validate_cursor_col();
  pum_array = NULL;

  row = curwin->w_wrow + W_WINROW(curwin);

  if (firstwin->w_p_pvw) {
    top_clear = firstwin->w_height;
  } else {
    top_clear = 0;
  }

  // When the preview window is at the bottom stop just above it.  Also
  // avoid drawing over the status line so that it's clear there is a window
  // boundary.
  if (lastwin->w_p_pvw) {
    above_row -= lastwin->w_height + lastwin->w_status_height + 1;
  }

  // Figure out the size and position of the pum.
  if (size < PUM_DEF_HEIGHT) {
    pum_height = size;
  } else {
    pum_height = PUM_DEF_HEIGHT;
  }

  if ((p_ph > 0) && (pum_height > p_ph)) {
    pum_height = p_ph;
  }

  // Put the pum below "row" if possible.  If there are few lines decide on
  // where there is more room.
  if ((row  + 2 >= above_row - pum_height)
      && (row > (above_row - top_clear) / 2)) {
    // pum above "row"

    // Leave two lines of context if possible
    if (curwin->w_wrow - curwin->w_cline_row >= 2) {
      context_lines = 2;
    } else {
      context_lines = curwin->w_wrow - curwin->w_cline_row;
    }

    if (row >= size + context_lines) {
      pum_row = row - size - context_lines;
      pum_height = size;
    } else {
      pum_row = 0;
      pum_height = row - context_lines;
    }

    if ((p_ph > 0) && (pum_height > p_ph)) {
      pum_row += pum_height - p_ph;
      pum_height = p_ph;
    }
  } else {
    // pum below "row"

    // Leave two lines of context if possible
    if (curwin->w_cline_row + curwin->w_cline_height - curwin->w_wrow >= 3) {
      context_lines = 3;
    } else {
      context_lines = curwin->w_cline_row
                      + curwin->w_cline_height - curwin->w_wrow;
    }

    pum_row = row + context_lines;
    if (size > above_row - pum_row) {
      pum_height = above_row - pum_row;
    } else {
      pum_height = size;
    }

    if ((p_ph > 0) && (pum_height > p_ph)) {
      pum_height = p_ph;
    }
  }

  // don't display when we only have room for one line
  if ((pum_height < 1) || ((pum_height == 1) && (size > 1))) {
    return;
  }

  // If there is a preview window at the top avoid drawing over it.
  if (firstwin->w_p_pvw
      && (pum_row < firstwin->w_height)
      && (pum_height > firstwin->w_height + 4)) {
    pum_row += firstwin->w_height;
    pum_height -= firstwin->w_height;
  }

  // Compute the width of the widest match and the widest extra.
  for (i = 0; i < size; ++i) {
    w = vim_strsize(array[i].pum_text);

    if (max_width < w) {
      max_width = w;
    }

    if (array[i].pum_kind != NULL) {
      w = vim_strsize(array[i].pum_kind) + 1;

      if (kind_width < w) {
        kind_width = w;
      }
    }

    if (array[i].pum_extra != NULL) {
      w = vim_strsize(array[i].pum_extra) + 1;

      if (extra_width < w) {
        extra_width = w;
      }
    }
  }
  pum_base_width = max_width;
  pum_kind_width = kind_width;

  // Calculate column
  if (curwin->w_p_rl) {
    col = W_WINCOL(curwin) + W_WIDTH(curwin) - curwin->w_wcol - 1;
  } else {
    col = W_WINCOL(curwin) + curwin->w_wcol;
  }

  // if there are more items than room we need a scrollbar
  if (pum_height < size) {
    pum_scrollbar = 1;
    max_width++;
  } else {
    pum_scrollbar = 0;
  }

  if (def_width < max_width) {
    def_width = max_width;
  }

  if ((((col < Columns - PUM_DEF_WIDTH) || (col < Columns - max_width))
       && !curwin->w_p_rl)
      || (curwin->w_p_rl && ((col > PUM_DEF_WIDTH) || (col > max_width)))) {
    // align pum column with "col"
    pum_col = col;
    if (curwin->w_p_rl) {
      pum_width = pum_col - pum_scrollbar + 1;
    } else {
      pum_width = Columns - pum_col - pum_scrollbar;
    }

    if ((pum_width > max_width + kind_width + extra_width + 1)
        && (pum_width > PUM_DEF_WIDTH)) {
      pum_width = max_width + kind_width + extra_width + 1;

      if (pum_width < PUM_DEF_WIDTH) {
        pum_width = PUM_DEF_WIDTH;
      }
    }
  } else if (Columns < def_width) {
    // not enough room, will use what we have
    if (curwin->w_p_rl) {
      pum_col = Columns - 1;
    } else {
      pum_col = 0;
    }
    pum_width = Columns - 1;
  } else {
    if (max_width > PUM_DEF_WIDTH) {
      // truncate
      max_width = PUM_DEF_WIDTH;
    }

    if (curwin->w_p_rl) {
      pum_col = max_width - 1;
    } else {
      pum_col = Columns - max_width;
    }
    pum_width = max_width - pum_scrollbar;
  }

  pum_array = array;
  pum_size = size;

  // Set selected item and redraw.  If the window size changed need to redo
  // the positioning.  Limit this to two times, when there is not much
  // room the window size will keep changing.
  if (pum_set_selected(selected, redo_count) && (++redo_count <= 2)) {
    goto redo;
  }
}
Beispiel #7
0
/// Redraw the popup menu, using "pum_first" and "pum_selected".
void pum_redraw(void)
{
  int row = pum_row;
  int col;
  int attr_norm = highlight_attr[HLF_PNI];
  int attr_select = highlight_attr[HLF_PSI];
  int attr_scroll = highlight_attr[HLF_PSB];
  int attr_thumb = highlight_attr[HLF_PST];
  int attr;
  int i;
  int idx;
  char_u *s;
  char_u *p = NULL;
  int totwidth, width, w;
  int thumb_pos = 0;
  int thumb_heigth = 1;
  int round;
  int n;

  // Never display more than we have
  if (pum_first > pum_size - pum_height) {
    pum_first = pum_size - pum_height;
  }

  if (pum_scrollbar) {
    thumb_heigth = pum_height * pum_height / pum_size;
    if (thumb_heigth == 0) {
      thumb_heigth = 1;
    }
    thumb_pos = (pum_first * (pum_height - thumb_heigth)
                 + (pum_size - pum_height) / 2)
                / (pum_size - pum_height);
  }

  for (i = 0; i < pum_height; ++i) {
    idx = i + pum_first;
    attr = (idx == pum_selected) ? attr_select : attr_norm;

    // prepend a space if there is room
    if (curwin->w_p_rl) {
      if (pum_col < W_WINCOL(curwin) + W_WIDTH(curwin) - 1) {
        screen_putchar(' ', row, pum_col + 1, attr);
      }
    } else if (pum_col > 0) {
      screen_putchar(' ', row, pum_col - 1, attr);
    }

    // Display each entry, use two spaces for a Tab.
    // Do this 3 times: For the main text, kind and extra info
    col = pum_col;
    totwidth = 0;

    for (round = 1; round <= 3; ++round) {
      width = 0;
      s = NULL;

      switch (round) {
        case 1:
          p = pum_array[idx].pum_text;
          break;

        case 2:
          p = pum_array[idx].pum_kind;
          break;

        case 3:
          p = pum_array[idx].pum_extra;
          break;
      }

      if (p != NULL) {
        for (;; mb_ptr_adv(p)) {
          if (s == NULL) {
            s = p;
          }
          w = ptr2cells(p);

          if ((*p == NUL) || (*p == TAB) || (totwidth + w > pum_width)) {
            // Display the text that fits or comes before a Tab.
            // First convert it to printable characters.
            char_u *st;
            int saved = *p;

            *p = NUL;
            st = transstr(s);
            *p = saved;

            if (curwin->w_p_rl) {
              if (st != NULL) {
                char_u  *rt = reverse_text(st);

                if (rt != NULL) {
                  char_u *rt_start = rt;
                  int size;

                  size = vim_strsize(rt);

                  if (size > pum_width) {
                    do {
                      size -= has_mbyte ? (*mb_ptr2cells)(rt) : 1;
                      mb_ptr_adv(rt);
                    } while (size > pum_width);

                    if (size < pum_width) {
                      // Most left character requires 2-cells but only 1 cell
                      // is available on screen.  Put a '<' on the left of the 
                      // pum item
                      *(--rt) = '<';
                      size++;
                    }
                  }
                  screen_puts_len(rt, (int)STRLEN(rt), row, col - size + 1,
                                  attr);
                  vim_free(rt_start);
                }
                vim_free(st);
              }
              col -= width;
            } else {
              if (st != NULL) {
                screen_puts_len(st, (int)STRLEN(st), row, col, attr);
                vim_free(st);
              }
              col += width;
            }

            if (*p != TAB) {
              break;
            }

            // Display two spaces for a Tab.
            if (curwin->w_p_rl) {
              screen_puts_len((char_u *)"  ", 2, row, col - 1, attr);
              col -= 2;
            } else {
              screen_puts_len((char_u *)"  ", 2, row, col, attr);
              col += 2;
            }
            totwidth += 2;
            // start text at next char
            s = NULL;
            width = 0;
          } else {
            width += w;
          }
        }
      }

      if (round > 1) {
        n = pum_kind_width + 1;
      } else {
        n = 1;
      }

      // Stop when there is nothing more to display.
      if ((round == 3)
          || ((round == 2)
              && (pum_array[idx].pum_extra == NULL))
          || ((round == 1)
              && (pum_array[idx].pum_kind == NULL)
              && (pum_array[idx].pum_extra == NULL))
          || (pum_base_width + n >= pum_width)) {
        break;
      }

      if (curwin->w_p_rl) {
        screen_fill(row, row + 1, pum_col - pum_base_width - n + 1,
                    col + 1, ' ', ' ', attr);
        col = pum_col - pum_base_width - n + 1;
      } else {
        screen_fill(row, row + 1, col, pum_col + pum_base_width + n,
                    ' ', ' ', attr);
        col = pum_col + pum_base_width + n;
      }
      totwidth = pum_base_width + n;
    }

    if (curwin->w_p_rl) {
      screen_fill(row, row + 1, pum_col - pum_width + 1, col + 1, ' ', ' ',
                  attr);
    } else {
      screen_fill(row, row + 1, col, pum_col + pum_width, ' ', ' ', attr);
    }

    if (pum_scrollbar > 0) {
      if (curwin->w_p_rl) {
        screen_putchar(' ', row, pum_col - pum_width,
                       i >= thumb_pos && i < thumb_pos + thumb_heigth
                       ? attr_thumb : attr_scroll);
      } else {
        screen_putchar(' ', row, pum_col + pum_width,
                       i >= thumb_pos && i < thumb_pos + thumb_heigth
                       ? attr_thumb : attr_scroll);
      }
    }
    row++;
  }
}
Beispiel #8
0
static int coladvance2(
    pos_T *pos,
    bool addspaces,                /* change the text to achieve our goal? */
    bool finetune,                 /* change char offset for the exact column */
    colnr_T wcol                   /* column to move to */
)
{
  int idx;
  char_u      *ptr;
  char_u      *line;
  colnr_T col = 0;
  int csize = 0;
  int one_more;
  int head = 0;

  one_more = (State & INSERT)
             || restart_edit != NUL
             || (VIsual_active && *p_sel != 'o')
             || ((ve_flags & VE_ONEMORE) && wcol < MAXCOL);
  line = ml_get_buf(curbuf, pos->lnum, false);

  if (wcol >= MAXCOL) {
    idx = (int)STRLEN(line) - 1 + one_more;
    col = wcol;

    if ((addspaces || finetune) && !VIsual_active) {
      curwin->w_curswant = linetabsize(line) + one_more;
      if (curwin->w_curswant > 0)
        --curwin->w_curswant;
    }
  } else {
    int width = W_WIDTH(curwin) - win_col_off(curwin);

    if (finetune
        && curwin->w_p_wrap
        && curwin->w_width != 0
        && wcol >= (colnr_T)width) {
      csize = linetabsize(line);
      if (csize > 0)
        csize--;

      if (wcol / width > (colnr_T)csize / width
          && ((State & INSERT) == 0 || (int)wcol > csize + 1)) {
        /* In case of line wrapping don't move the cursor beyond the
         * right screen edge.  In Insert mode allow going just beyond
         * the last character (like what happens when typing and
         * reaching the right window edge). */
        wcol = (csize / width + 1) * width - 1;
      }
    }

    ptr = line;
    while (col <= wcol && *ptr != NUL) {
      /* Count a tab for what it's worth (if list mode not on) */
      csize = win_lbr_chartabsize(curwin, ptr, col, &head);
      mb_ptr_adv(ptr);
      col += csize;
    }
    idx = (int)(ptr - line);
    /*
     * Handle all the special cases.  The virtual_active() check
     * is needed to ensure that a virtual position off the end of
     * a line has the correct indexing.  The one_more comparison
     * replaces an explicit add of one_more later on.
     */
    if (col > wcol || (!virtual_active() && one_more == 0)) {
      idx -= 1;
      /* Don't count the chars from 'showbreak'. */
      csize -= head;
      col -= csize;
    }

    if (virtual_active()
        && addspaces
        && ((col != wcol && col != wcol + 1) || csize > 1)) {
      /* 'virtualedit' is set: The difference between wcol and col is
       * filled with spaces. */

      if (line[idx] == NUL) {
        /* Append spaces */
        int correct = wcol - col;
        char_u *newline = xmallocz((size_t)(idx + correct));
        memcpy(newline, line, (size_t)idx);
        memset(newline + idx, ' ', (size_t)correct);

        ml_replace(pos->lnum, newline, false);
        changed_bytes(pos->lnum, (colnr_T)idx);
        idx += correct;
        col = wcol;
      } else {
        /* Break a tab */
        int linelen = (int)STRLEN(line);
        int correct = wcol - col - csize + 1;             /* negative!! */
        char_u  *newline;

        if (-correct > csize)
          return FAIL;

        newline = xmallocz((size_t)(linelen - 1 + csize));
        // Copy first idx chars
        memcpy(newline, line, (size_t)idx);
        // Replace idx'th char with csize spaces
        memset(newline + idx, ' ', (size_t)csize);
        // Copy the rest of the line
        memcpy(newline + idx + csize, line + idx + 1,
               (size_t)(linelen - idx - 1));

        ml_replace(pos->lnum, newline, false);
        changed_bytes(pos->lnum, idx);
        idx += (csize - 1 + correct);
        col += correct;
      }
    }
  }

  if (idx < 0)
    pos->col = 0;
  else
    pos->col = idx;

  pos->coladd = 0;

  if (finetune) {
    if (wcol == MAXCOL) {
      /* The width of the last character is used to set coladd. */
      if (!one_more) {
        colnr_T scol, ecol;

        getvcol(curwin, pos, &scol, NULL, &ecol);
        pos->coladd = ecol - scol;
      }
    } else {
      int b = (int)wcol - (int)col;

      /* The difference between wcol and col is used to set coladd. */
      if (b > 0 && b < (MAXCOL - 2 * W_WIDTH(curwin)))
        pos->coladd = b;

      col += b;
    }
  }

  /* prevent from moving onto a trail byte */
  if (has_mbyte)
    mb_adjustpos(curbuf, pos);

  if (col < wcol)
    return FAIL;
  return OK;
}
Beispiel #9
0
/*
 * Show the popup menu with items "array[size]".
 * "array" must remain valid until pum_undisplay() is called!
 * When possible the leftmost character is aligned with screen column "col".
 * The menu appears above the screen line "row" or at "row" + "height" - 1.
 */
void
pum_display (
    pumitem_T *array,
    int size,
    int selected                   /* index of initially selected item, none if
                                   out of range */
)
{
    int w;
    int def_width;
    int max_width;
    int kind_width;
    int extra_width;
    int i;
    int top_clear;
    int row;
    int context_lines;
    int col;
    int above_row = cmdline_row;
    int redo_count = 0;

redo:
    def_width = PUM_DEF_WIDTH;
    max_width = 0;
    kind_width = 0;
    extra_width = 0;

    /* Pretend the pum is already there to avoid that must_redraw is set when
     * 'cuc' is on. */
    pum_array = (pumitem_T *)1;
    validate_cursor_col();
    pum_array = NULL;

    row = curwin->w_wrow + W_WINROW(curwin);

    if (firstwin->w_p_pvw)
        top_clear = firstwin->w_height;
    else
        top_clear = 0;

    /* When the preview window is at the bottom stop just above it.  Also
     * avoid drawing over the status line so that it's clear there is a window
     * boundary. */
    if (lastwin->w_p_pvw)
        above_row -= lastwin->w_height + lastwin->w_status_height + 1;

    /*
     * Figure out the size and position of the pum.
     */
    if (size < PUM_DEF_HEIGHT)
        pum_height = size;
    else
        pum_height = PUM_DEF_HEIGHT;
    if (p_ph > 0 && pum_height > p_ph)
        pum_height = p_ph;

    /* Put the pum below "row" if possible.  If there are few lines decide on
     * where there is more room. */
    if (row  + 2 >= above_row - pum_height
            && row > (above_row - top_clear) / 2) {
        /* pum above "row" */

        /* Leave two lines of context if possible */
        if (curwin->w_wrow - curwin->w_cline_row >= 2)
            context_lines = 2;
        else
            context_lines = curwin->w_wrow - curwin->w_cline_row;

        if (row >= size + context_lines) {
            pum_row = row - size - context_lines;
            pum_height = size;
        } else   {
            pum_row = 0;
            pum_height = row - context_lines;
        }
        if (p_ph > 0 && pum_height > p_ph) {
            pum_row += pum_height - p_ph;
            pum_height = p_ph;
        }
    } else   {
        /* pum below "row" */

        /* Leave two lines of context if possible */
        if (curwin->w_cline_row + curwin->w_cline_height - curwin->w_wrow >= 3)
            context_lines = 3;
        else
            context_lines = curwin->w_cline_row
                            + curwin->w_cline_height - curwin->w_wrow;

        pum_row = row + context_lines;
        if (size > above_row - pum_row)
            pum_height = above_row - pum_row;
        else
            pum_height = size;
        if (p_ph > 0 && pum_height > p_ph)
            pum_height = p_ph;
    }

    /* don't display when we only have room for one line */
    if (pum_height < 1 || (pum_height == 1 && size > 1))
        return;

    /* If there is a preview window at the top avoid drawing over it. */
    if (firstwin->w_p_pvw
            && pum_row < firstwin->w_height
            && pum_height > firstwin->w_height + 4) {
        pum_row += firstwin->w_height;
        pum_height -= firstwin->w_height;
    }

    /* Compute the width of the widest match and the widest extra. */
    for (i = 0; i < size; ++i) {
        w = vim_strsize(array[i].pum_text);
        if (max_width < w)
            max_width = w;
        if (array[i].pum_kind != NULL) {
            w = vim_strsize(array[i].pum_kind) + 1;
            if (kind_width < w)
                kind_width = w;
        }
        if (array[i].pum_extra != NULL) {
            w = vim_strsize(array[i].pum_extra) + 1;
            if (extra_width < w)
                extra_width = w;
        }
    }
    pum_base_width = max_width;
    pum_kind_width = kind_width;

    /* Calculate column */
    if (curwin->w_p_rl)
        col = W_WINCOL(curwin) + W_WIDTH(curwin) - curwin->w_wcol - 1;
    else
        col = W_WINCOL(curwin) + curwin->w_wcol;

    /* if there are more items than room we need a scrollbar */
    if (pum_height < size) {
        pum_scrollbar = 1;
        ++max_width;
    } else
        pum_scrollbar = 0;

    if (def_width < max_width)
        def_width = max_width;

    if (((col < Columns - PUM_DEF_WIDTH || col < Columns - max_width)
            && !curwin->w_p_rl)
            || (curwin->w_p_rl && (col > PUM_DEF_WIDTH || col > max_width)
               )) {
        /* align pum column with "col" */
        pum_col = col;

        if (curwin->w_p_rl)
            pum_width = pum_col - pum_scrollbar + 1;
        else
            pum_width = Columns - pum_col - pum_scrollbar;

        if (pum_width > max_width + kind_width + extra_width + 1
                && pum_width > PUM_DEF_WIDTH) {
            pum_width = max_width + kind_width + extra_width + 1;
            if (pum_width < PUM_DEF_WIDTH)
                pum_width = PUM_DEF_WIDTH;
        }
    } else if (Columns < def_width)   {
        /* not enough room, will use what we have */
        if (curwin->w_p_rl)
            pum_col = Columns - 1;
        else
            pum_col = 0;
        pum_width = Columns - 1;
    } else   {
        if (max_width > PUM_DEF_WIDTH)
            max_width = PUM_DEF_WIDTH;        /* truncate */
        if (curwin->w_p_rl)
            pum_col = max_width - 1;
        else
            pum_col = Columns - max_width;
        pum_width = max_width - pum_scrollbar;
    }

    pum_array = array;
    pum_size = size;

    /* Set selected item and redraw.  If the window size changed need to redo
     * the positioning.  Limit this to two times, when there is not much
     * room the window size will keep changing. */
    if (pum_set_selected(selected, redo_count) && ++redo_count <= 2)
        goto redo;
}