Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

738 lines (667 sloc) 17.824 kb
/* 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.
*/
/*
* popupmnu.c: Popup menu (PUM)
*/
#include "vim.h"
#if defined(FEAT_INS_EXPAND) || defined(PROTO)
static pumitem_T *pum_array = NULL; /* items of displayed pum */
static int pum_size; /* nr of items in "pum_array" */
static int pum_selected; /* index of selected item or -1 */
static int pum_first = 0; /* index of top item */
static int pum_height; /* nr of displayed pum items */
static int pum_width; /* width of displayed pum items */
static int pum_base_width; /* width of pum items base */
static int pum_kind_width; /* width of pum items kind column */
static int pum_scrollbar; /* TRUE when scrollbar present */
static int pum_row; /* top row of pum */
static int pum_col; /* left column of pum */
static int pum_do_redraw = FALSE; /* do redraw anyway */
static int pum_set_selected __ARGS((int n, int repeat));
#define PUM_DEF_HEIGHT 10
#define PUM_DEF_WIDTH 15
/*
* 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(array, size, selected)
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 */
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl)
col = W_WINCOL(curwin) + W_WIDTH(curwin) - curwin->w_wcol - 1;
else
#endif
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)
#ifdef FEAT_RIGHTLEFT
&& !curwin->w_p_rl)
|| (curwin->w_p_rl && (col > PUM_DEF_WIDTH || col > max_width)
#endif
))
{
/* align pum column with "col" */
pum_col = col;
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl)
pum_width = pum_col - pum_scrollbar + 1;
else
#endif
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 */
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl)
pum_col = Columns - 1;
else
#endif
pum_col = 0;
pum_width = Columns - 1;
}
else
{
if (max_width > PUM_DEF_WIDTH)
max_width = PUM_DEF_WIDTH; /* truncate */
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl)
pum_col = max_width - 1;
else
#endif
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;
}
/*
* Redraw the popup menu, using "pum_first" and "pum_selected".
*/
void
pum_redraw()
{
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 */
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl)
{
if (pum_col < W_WINCOL(curwin) + W_WIDTH(curwin) - 1)
screen_putchar(' ', row, pum_col + 1, attr);
}
else
#endif
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;
#ifdef FEAT_RIGHTLEFT
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
#endif
{
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. */
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl)
{
screen_puts_len((char_u *)" ", 2, row, col - 1,
attr);
col -= 2;
}
else
#endif
{
screen_puts_len((char_u *)" ", 2, row, col, attr);
col += 2;
}
totwidth += 2;
s = NULL; /* start text at next char */
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;
#ifdef FEAT_RIGHTLEFT
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
#endif
{
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;
}
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl)
screen_fill(row, row + 1, pum_col - pum_width + 1, col + 1, ' ',
' ', attr);
else
#endif
screen_fill(row, row + 1, col, pum_col + pum_width, ' ', ' ',
attr);
if (pum_scrollbar > 0)
{
#ifdef FEAT_RIGHTLEFT
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
#endif
screen_putchar(' ', row, pum_col + pum_width,
i >= thumb_pos && i < thumb_pos + thumb_heigth
? attr_thumb : attr_scroll);
}
++row;
}
}
/*
* Set the index of the currently selected item. The menu will scroll when
* necessary. When "n" is out of range don't scroll.
* This may be repeated when the preview window is used:
* "repeat" == 0: open preview window normally
* "repeat" == 1: open preview window but don't set the size
* "repeat" == 2: don't open preview window
* Returns TRUE when the window was resized and the location of the popup menu
* must be recomputed.
*/
static int
pum_set_selected(n, repeat)
int n;
int repeat;
{
int resized = FALSE;
int context = pum_height / 2;
pum_selected = n;
if (pum_selected >= 0 && pum_selected < pum_size)
{
if (pum_first > pum_selected - 4)
{
/* scroll down; when we did a jump it's probably a PageUp then
* scroll a whole page */
if (pum_first > pum_selected - 2)
{
pum_first -= pum_height - 2;
if (pum_first < 0)
pum_first = 0;
else if (pum_first > pum_selected)
pum_first = pum_selected;
}
else
pum_first = pum_selected;
}
else if (pum_first < pum_selected - pum_height + 5)
{
/* scroll up; when we did a jump it's probably a PageDown then
* scroll a whole page */
if (pum_first < pum_selected - pum_height + 1 + 2)
{
pum_first += pum_height - 2;
if (pum_first < pum_selected - pum_height + 1)
pum_first = pum_selected - pum_height + 1;
}
else
pum_first = pum_selected - pum_height + 1;
}
/* Give a few lines of context when possible. */
if (context > 3)
context = 3;
if (pum_height > 2)
{
if (pum_first > pum_selected - context)
{
/* scroll down */
pum_first = pum_selected - context;
if (pum_first < 0)
pum_first = 0;
}
else if (pum_first < pum_selected + context - pum_height + 1)
{
/* scroll up */
pum_first = pum_selected + context - pum_height + 1;
}
}
#if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
/*
* Show extra info in the preview window if there is something and
* 'completeopt' contains "preview".
* Skip this when tried twice already.
* Skip this also when there is not much room.
* NOTE: Be very careful not to sync undo!
*/
if (pum_array[pum_selected].pum_info != NULL
&& Rows > 10
&& repeat <= 1
&& vim_strchr(p_cot, 'p') != NULL)
{
win_T *curwin_save = curwin;
int res = OK;
/* Open a preview window. 3 lines by default. Prefer
* 'previewheight' if set and smaller. */
g_do_tagpreview = 3;
if (p_pvh > 0 && p_pvh < g_do_tagpreview)
g_do_tagpreview = p_pvh;
++RedrawingDisabled;
resized = prepare_tagpreview(FALSE);
--RedrawingDisabled;
g_do_tagpreview = 0;
if (curwin->w_p_pvw)
{
if (curbuf->b_fname == NULL
&& curbuf->b_p_bt[0] == 'n' && curbuf->b_p_bt[2] == 'f'
&& curbuf->b_p_bh[0] == 'w')
{
/* Already a "wipeout" buffer, make it empty. */
while (!bufempty())
ml_delete((linenr_T)1, FALSE);
}
else
{
/* Don't want to sync undo in the current buffer. */
++no_u_sync;
res = do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, 0, NULL);
--no_u_sync;
if (res == OK)
{
/* Edit a new, empty buffer. Set options for a "wipeout"
* buffer. */
set_option_value((char_u *)"swf", 0L, NULL, OPT_LOCAL);
set_option_value((char_u *)"bt", 0L,
(char_u *)"nofile", OPT_LOCAL);
set_option_value((char_u *)"bh", 0L,
(char_u *)"wipe", OPT_LOCAL);
set_option_value((char_u *)"diff", 0L,
NULL, OPT_LOCAL);
}
}
if (res == OK)
{
char_u *p, *e;
linenr_T lnum = 0;
for (p = pum_array[pum_selected].pum_info; *p != NUL; )
{
e = vim_strchr(p, '\n');
if (e == NULL)
{
ml_append(lnum++, p, 0, FALSE);
break;
}
else
{
*e = NUL;
ml_append(lnum++, p, (int)(e - p + 1), FALSE);
*e = '\n';
p = e + 1;
}
}
/* Increase the height of the preview window to show the
* text, but no more than 'previewheight' lines. */
if (repeat == 0)
{
if (lnum > p_pvh)
lnum = p_pvh;
if (curwin->w_height < lnum)
{
win_setheight((int)lnum);
resized = TRUE;
}
}
curbuf->b_changed = 0;
curbuf->b_p_ma = FALSE;
curwin->w_cursor.lnum = 1;
curwin->w_cursor.col = 0;
if (curwin != curwin_save && win_valid(curwin_save))
{
/* When the first completion is done and the preview
* window is not resized, skip the preview window's
* status line redrawing. */
if (ins_compl_active() && !resized)
curwin->w_redr_status = FALSE;
/* Return cursor to where we were */
validate_cursor();
redraw_later(SOME_VALID);
/* When the preview window was resized we need to
* update the view on the buffer. Only go back to
* the window when needed, otherwise it will always be
* redraw. */
if (resized)
{
win_enter(curwin_save, TRUE);
update_topline();
}
/* Update the screen before drawing the popup menu.
* Enable updating the status lines. */
pum_do_redraw = TRUE;
update_screen(0);
pum_do_redraw = FALSE;
if (!resized && win_valid(curwin_save))
win_enter(curwin_save, TRUE);
/* May need to update the screen again when there are
* autocommands involved. */
pum_do_redraw = TRUE;
update_screen(0);
pum_do_redraw = FALSE;
}
}
}
}
#endif
}
if (!resized)
pum_redraw();
return resized;
}
/*
* Undisplay the popup menu (later).
*/
void
pum_undisplay()
{
pum_array = NULL;
redraw_all_later(SOME_VALID);
#ifdef FEAT_WINDOWS
redraw_tabline = TRUE;
#endif
status_redraw_all();
}
/*
* Clear the popup menu. Currently only resets the offset to the first
* displayed item.
*/
void
pum_clear()
{
pum_first = 0;
}
/*
* Return TRUE if the popup menu is displayed.
* Overruled when "pum_do_redraw" is set, used to redraw the status lines.
*/
int
pum_visible()
{
return !pum_do_redraw && pum_array != NULL;
}
/*
* Return the height of the popup menu, the number of entries visible.
* Only valid when pum_visible() returns TRUE!
*/
int
pum_get_height()
{
return pum_height;
}
#endif
Jump to Line
Something went wrong with that request. Please try again.