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Diffstat (limited to 'src/popupmnu.c')
| -rw-r--r-- | src/popupmnu.c | 1361 |
1 files changed, 1361 insertions, 0 deletions
diff --git a/src/popupmnu.c b/src/popupmnu.c new file mode 100644 index 0000000..755dba4 --- /dev/null +++ b/src/popupmnu.c @@ -0,0 +1,1361 @@ +/* vi:set ts=8 sts=4 sw=4 noet: + * + * 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 call_update_screen = FALSE; + +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_extra_width; /* width of extra stuff */ +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 win_T *pum_window = NULL; +static int pum_win_row; +static int pum_win_height; +static int pum_win_col; +static int pum_win_wcol; +static int pum_win_width; + +static int pum_do_redraw = FALSE; // do redraw anyway +static int pum_skip_redraw = FALSE; // skip redraw + +static int pum_set_selected(int n, int repeat); + +#define PUM_DEF_HEIGHT 10 + + static void +pum_compute_size(void) +{ + int i; + int w; + + /* Compute the width of the widest match and the widest extra. */ + pum_base_width = 0; + pum_kind_width = 0; + pum_extra_width = 0; + for (i = 0; i < pum_size; ++i) + { + w = vim_strsize(pum_array[i].pum_text); + if (pum_base_width < w) + pum_base_width = w; + if (pum_array[i].pum_kind != NULL) + { + w = vim_strsize(pum_array[i].pum_kind) + 1; + if (pum_kind_width < w) + pum_kind_width = w; + } + if (pum_array[i].pum_extra != NULL) + { + w = vim_strsize(pum_array[i].pum_extra) + 1; + if (pum_extra_width < w) + pum_extra_width = w; + } + } +} + +/* + * 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 cursor column. + * 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 def_width; + int max_width; + int context_lines; + int cursor_col; + int above_row; + int below_row; + int redo_count = 0; +#if defined(FEAT_QUICKFIX) + win_T *pvwin; +#endif + + do + { + def_width = p_pw; + above_row = 0; + below_row = cmdline_row; + + /* 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; + + // Remember the essential parts of the window position and size, so we + // can decide when to reposition the popup menu. + pum_window = curwin; + pum_win_row = curwin->w_wrow + W_WINROW(curwin); + pum_win_height = curwin->w_height; + pum_win_col = curwin->w_wincol; + pum_win_wcol = curwin->w_wcol; + pum_win_width = curwin->w_width; + +#if defined(FEAT_QUICKFIX) + FOR_ALL_WINDOWS(pvwin) + if (pvwin->w_p_pvw) + break; + if (pvwin != NULL) + { + if (W_WINROW(pvwin) < W_WINROW(curwin)) + above_row = W_WINROW(pvwin) + pvwin->w_height; + else if (W_WINROW(pvwin) > W_WINROW(curwin) + curwin->w_height) + below_row = W_WINROW(pvwin); + } +#endif + + /* + * 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 "pum_win_row" if possible. If there are few lines + * decide on where there is more room. */ + if (pum_win_row + 2 >= below_row - pum_height + && pum_win_row - above_row > (below_row - above_row) / 2) + { + /* pum above "pum_win_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 (pum_win_row >= size + context_lines) + { + pum_row = pum_win_row - size - context_lines; + pum_height = size; + } + else + { + pum_row = 0; + pum_height = pum_win_row - context_lines; + } + if (p_ph > 0 && pum_height > p_ph) + { + pum_row += pum_height - p_ph; + pum_height = p_ph; + } + } + else + { + /* pum below "pum_win_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 = pum_win_row + context_lines; + if (size > below_row - pum_row) + pum_height = below_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 defined(FEAT_QUICKFIX) + // If there is a preview window above avoid drawing over it. + if (pvwin != NULL && pum_row < above_row && pum_height > above_row) + { + pum_row = above_row; + pum_height = pum_win_row - above_row; + } +#endif + + pum_array = array; + pum_size = size; + pum_compute_size(); + max_width = pum_base_width; + + /* Calculate column */ +#ifdef FEAT_RIGHTLEFT + if (curwin->w_p_rl) + cursor_col = curwin->w_wincol + curwin->w_width + - curwin->w_wcol - 1; + else +#endif + cursor_col = curwin->w_wincol + 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 (((cursor_col < Columns - p_pw + || cursor_col < Columns - max_width) +#ifdef FEAT_RIGHTLEFT + && !curwin->w_p_rl) + || (curwin->w_p_rl + && (cursor_col > p_pw || cursor_col > max_width) +#endif + )) + { + /* align pum with "cursor_col" */ + pum_col = cursor_col; + + /* start with the maximum space available */ +#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 + pum_kind_width + pum_extra_width + 1 + && pum_width > p_pw) + { + /* the width is more than needed for the items, make it + * narrower */ + pum_width = max_width + pum_kind_width + pum_extra_width + 1; + if (pum_width < p_pw) + pum_width = p_pw; + } + else if (((cursor_col > p_pw || cursor_col > max_width) +#ifdef FEAT_RIGHTLEFT + && !curwin->w_p_rl) + || (curwin->w_p_rl && (cursor_col < Columns - p_pw + || cursor_col < Columns - max_width) +#endif + )) + { + /* align pum edge with "cursor_col" */ +#ifdef FEAT_RIGHTLEFT + if (curwin->w_p_rl + && W_ENDCOL(curwin) < max_width + pum_scrollbar + 1) + { + pum_col = cursor_col + max_width + pum_scrollbar + 1; + if (pum_col >= Columns) + pum_col = Columns - 1; + } + else if (!curwin->w_p_rl) +#endif + { + if (curwin->w_wincol > Columns - max_width - pum_scrollbar + && max_width <= p_pw) + { + /* use full width to end of the screen */ + pum_col = Columns - max_width - pum_scrollbar; + if (pum_col < 0) + pum_col = 0; + } + } + +#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 < p_pw) + { + pum_width = p_pw; +#ifdef FEAT_RIGHTLEFT + if (curwin->w_p_rl) + { + if (pum_width > pum_col) + pum_width = pum_col; + } + else +#endif + { + if (pum_width >= Columns - pum_col) + pum_width = Columns - pum_col - 1; + } + } + else if (pum_width > max_width + pum_kind_width + + pum_extra_width + 1 + && pum_width > p_pw) + { + pum_width = max_width + pum_kind_width + + pum_extra_width + 1; + if (pum_width < p_pw) + pum_width = p_pw; + } + } + + } + 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 > p_pw) + max_width = p_pw; /* 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; + } + + /* 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. */ + } while (pum_set_selected(selected, redo_count) && ++redo_count <= 2); +} + +/* + * Set a flag that when pum_redraw() is called it first calls update_screen(). + * This will avoid clearing and redrawing the popup menu, prevent flicker. + */ + void +pum_call_update_screen() +{ + call_update_screen = TRUE; + + // Update the cursor position to be able to compute the popup menu + // position. The cursor line length may have changed because of the + // inserted completion. + curwin->w_valid &= ~(VALID_CROW|VALID_CHEIGHT); + validate_cursor(); +} + +/* + * Return TRUE if we are going to redraw the popup menu and the screen position + * "row"/"col" is under the popup menu. + */ + int +pum_under_menu(int row, int col) +{ + return pum_skip_redraw + && row >= pum_row + && row < pum_row + pum_height + && col >= pum_col - 1 + && col < pum_col + pum_width; +} + +/* + * 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; + + if (call_update_screen) + { + call_update_screen = FALSE; + pum_skip_redraw = TRUE; // do not redraw in pum_may_redraw(). + update_screen(0); + pum_skip_redraw = FALSE; + } + + // 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 < curwin->w_wincol + curwin->w_width - 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; + + if (saved != NUL) + *p = NUL; + st = transstr(s); + if (saved != NUL) + *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(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_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; + tabpage_T *curtab_save = curtab; + 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; + /* Prevent undo sync here, if an autocommand syncs undo weird + * things can happen to the undo tree. */ + ++no_u_sync; + resized = prepare_tagpreview(FALSE); + --no_u_sync; + --RedrawingDisabled; + g_do_tagpreview = 0; + + if (curwin->w_p_pvw) + { + if (!resized + && curbuf->b_nwindows == 1 + && 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)) + || (curtab != curtab_save + && valid_tabpage(curtab_save))) + { + if (curtab != curtab_save && valid_tabpage(curtab_save)) + goto_tabpage_tp(curtab_save, FALSE, FALSE); + + /* 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) + { + ++no_u_sync; + win_enter(curwin_save, TRUE); + --no_u_sync; + 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)) + { + ++no_u_sync; + win_enter(curwin_save, TRUE); + --no_u_sync; + } + + /* May need to update the screen again when there are + * autocommands involved. */ + pum_do_redraw = TRUE; + update_screen(0); + pum_do_redraw = FALSE; + call_update_screen = FALSE; + } + } + } + } +#endif + } + + if (!resized) + pum_redraw(); + + return resized; +} + +/* + * Undisplay the popup menu (later). + */ + void +pum_undisplay(void) +{ + pum_array = NULL; + redraw_all_later(NOT_VALID); + redraw_tabline = TRUE; + status_redraw_all(); +} + +/* + * Clear the popup menu. Currently only resets the offset to the first + * displayed item. + */ + void +pum_clear(void) +{ + 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(void) +{ + return !pum_do_redraw && pum_array != NULL; +} + +/* + * Reposition the popup menu to adjust for window layout changes. + */ + void +pum_may_redraw(void) +{ + pumitem_T *array = pum_array; + int len = pum_size; + int selected = pum_selected; + + if (!pum_visible() || pum_skip_redraw) + return; // nothing to do + + if (pum_window != curwin + || (pum_win_row == curwin->w_wrow + W_WINROW(curwin) + && pum_win_height == curwin->w_height + && pum_win_col == curwin->w_wincol + && pum_win_width == curwin->w_width)) + { + // window position didn't change, redraw in the same position + pum_redraw(); + } + else + { + int wcol = curwin->w_wcol; + + // Window layout changed, recompute the position. + // Use the remembered w_wcol value, the cursor may have moved when a + // completion was inserted, but we want the menu in the same position. + pum_undisplay(); + curwin->w_wcol = pum_win_wcol; + curwin->w_valid |= VALID_WCOL; + pum_display(array, len, selected); + curwin->w_wcol = wcol; + } +} + +/* + * Return the height of the popup menu, the number of entries visible. + * Only valid when pum_visible() returns TRUE! + */ + int +pum_get_height(void) +{ + return pum_height; +} + +# if defined(FEAT_BEVAL_TERM) || defined(FEAT_TERM_POPUP_MENU) || defined(PROTO) + static void +pum_position_at_mouse(int min_width) +{ + if (Rows - mouse_row > pum_size) + { + /* Enough space below the mouse row. */ + pum_row = mouse_row + 1; + if (pum_height > Rows - pum_row) + pum_height = Rows - pum_row; + } + else + { + /* Show above the mouse row, reduce height if it does not fit. */ + pum_row = mouse_row - pum_size; + if (pum_row < 0) + { + pum_height += pum_row; + pum_row = 0; + } + } + if (Columns - mouse_col >= pum_base_width + || Columns - mouse_col > min_width) + /* Enough space to show at mouse column. */ + pum_col = mouse_col; + else + /* Not enough space, right align with window. */ + pum_col = Columns - (pum_base_width > min_width + ? min_width : pum_base_width); + + pum_width = Columns - pum_col; + if (pum_width > pum_base_width + 1) + pum_width = pum_base_width + 1; + + // Do not redraw at cursor position. + pum_window = NULL; +} + +# endif + +# if defined(FEAT_BEVAL_TERM) || defined(PROTO) +static pumitem_T *balloon_array = NULL; +static int balloon_arraysize; +static int balloon_mouse_row = 0; +static int balloon_mouse_col = 0; + +#define BALLOON_MIN_WIDTH 50 +#define BALLOON_MIN_HEIGHT 10 + +typedef struct { + char_u *start; + int bytelen; + int cells; + int indent; +} balpart_T; + +/* + * Split a string into parts to display in the balloon. + * Aimed at output from gdb. Attempts to split at white space, preserve quoted + * strings and make a struct look good. + * Resulting array is stored in "array" and returns the size of the array. + */ + int +split_message(char_u *mesg, pumitem_T **array) +{ + garray_T ga; + char_u *p; + balpart_T *item; + int quoted = FALSE; + int height; + int line; + int item_idx; + int indent = 0; + int max_cells = 0; + int max_height = Rows / 2 - 2; + int long_item_count = 0; + int split_long_items = FALSE; + + ga_init2(&ga, sizeof(balpart_T), 20); + p = mesg; + + while (*p != NUL) + { + if (ga_grow(&ga, 1) == FAIL) + goto failed; + item = ((balpart_T *)ga.ga_data) + ga.ga_len; + item->start = p; + item->indent = indent; + item->cells = indent * 2; + ++ga.ga_len; + while (*p != NUL) + { + if (*p == '"') + quoted = !quoted; + else if (*p == '\\' && p[1] != NUL) + ++p; + else if (!quoted) + { + if ((*p == ',' && p[1] == ' ') || *p == '{' || *p == '}') + { + /* Looks like a good point to break. */ + if (*p == '{') + ++indent; + else if (*p == '}' && indent > 0) + --indent; + ++item->cells; + p = skipwhite(p + 1); + break; + } + } + item->cells += ptr2cells(p); + p += MB_PTR2LEN(p); + } + item->bytelen = p - item->start; + if (item->cells > max_cells) + max_cells = item->cells; + long_item_count += (item->cells - 1) / BALLOON_MIN_WIDTH; + } + + height = 2 + ga.ga_len; + + /* If there are long items and the height is below the limit: split lines */ + if (long_item_count > 0 && height + long_item_count <= max_height) + { + split_long_items = TRUE; + height += long_item_count; + } + + /* Limit to half the window height, it has to fit above or below the mouse + * position. */ + if (height > max_height) + height = max_height; + *array = (pumitem_T *)alloc_clear((unsigned)sizeof(pumitem_T) * height); + if (*array == NULL) + goto failed; + + /* Add an empty line above and below, looks better. */ + (*array)->pum_text = vim_strsave((char_u *)""); + (*array + height - 1)->pum_text = vim_strsave((char_u *)""); + + for (line = 1, item_idx = 0; line < height - 1; ++item_idx) + { + int skip; + int thislen; + int copylen; + int ind; + int cells; + + item = ((balpart_T *)ga.ga_data) + item_idx; + for (skip = 0; skip < item->bytelen; skip += thislen) + { + if (split_long_items && item->cells >= BALLOON_MIN_WIDTH) + { + cells = item->indent * 2; + for (p = item->start + skip; p < item->start + item->bytelen; + p += MB_PTR2LEN(p)) + if ((cells += ptr2cells(p)) > BALLOON_MIN_WIDTH) + break; + thislen = p - (item->start + skip); + } + else + thislen = item->bytelen; + + /* put indent at the start */ + p = alloc(thislen + item->indent * 2 + 1); + for (ind = 0; ind < item->indent * 2; ++ind) + p[ind] = ' '; + + /* exclude spaces at the end of the string */ + for (copylen = thislen; copylen > 0; --copylen) + if (item->start[skip + copylen - 1] != ' ') + break; + + vim_strncpy(p + ind, item->start + skip, copylen); + (*array)[line].pum_text = p; + item->indent = 0; /* wrapped line has no indent */ + ++line; + } + } + ga_clear(&ga); + return height; + +failed: + ga_clear(&ga); + return 0; +} + + void +ui_remove_balloon(void) +{ + if (balloon_array != NULL) + { + pum_undisplay(); + while (balloon_arraysize > 0) + vim_free(balloon_array[--balloon_arraysize].pum_text); + VIM_CLEAR(balloon_array); + } +} + +/* + * Terminal version of a balloon, uses the popup menu code. + */ + void +ui_post_balloon(char_u *mesg, list_T *list) +{ + ui_remove_balloon(); + + if (mesg == NULL && list == NULL) + return; + if (list != NULL) + { + listitem_T *li; + int idx; + + balloon_arraysize = list->lv_len; + balloon_array = (pumitem_T *)alloc_clear( + (unsigned)sizeof(pumitem_T) * list->lv_len); + if (balloon_array == NULL) + return; + for (idx = 0, li = list->lv_first; li != NULL; li = li->li_next, ++idx) + { + char_u *text = tv_get_string_chk(&li->li_tv); + + balloon_array[idx].pum_text = vim_strsave( + text == NULL ? (char_u *)"" : text); + } + } + else + balloon_arraysize = split_message(mesg, &balloon_array); + + if (balloon_arraysize > 0) + { + pum_array = balloon_array; + pum_size = balloon_arraysize; + pum_compute_size(); + pum_scrollbar = 0; + pum_height = balloon_arraysize; + + pum_position_at_mouse(BALLOON_MIN_WIDTH); + pum_selected = -1; + pum_first = 0; + pum_redraw(); + } +} + +/* + * Called when the mouse moved, may remove any displayed balloon. + */ + void +ui_may_remove_balloon(void) +{ + if (mouse_row != balloon_mouse_row || mouse_col != balloon_mouse_col) + ui_remove_balloon(); +} +# endif + +# if defined(FEAT_TERM_POPUP_MENU) || defined(PROTO) +/* + * Select the pum entry at the mouse position. + */ + static void +pum_select_mouse_pos(void) +{ + int idx = mouse_row - pum_row; + + if (idx < 0 || idx >= pum_size) + pum_selected = -1; + else if (*pum_array[idx].pum_text != NUL) + pum_selected = idx; +} + +/* + * Execute the currently selected popup menu item. + */ + static void +pum_execute_menu(vimmenu_T *menu, int mode) +{ + vimmenu_T *mp; + int idx = 0; + exarg_T ea; + + for (mp = menu->children; mp != NULL; mp = mp->next) + if ((mp->modes & mp->enabled & mode) && idx++ == pum_selected) + { + vim_memset(&ea, 0, sizeof(ea)); + execute_menu(&ea, mp, -1); + break; + } +} + +/* + * Open the terminal version of the popup menu and don't return until it is + * closed. + */ + void +pum_show_popupmenu(vimmenu_T *menu) +{ + vimmenu_T *mp; + int idx = 0; + pumitem_T *array; +#ifdef FEAT_BEVAL_TERM + int save_bevalterm = p_bevalterm; +#endif + int mode; + + pum_undisplay(); + pum_size = 0; + mode = get_menu_mode_flag(); + + for (mp = menu->children; mp != NULL; mp = mp->next) + if (menu_is_separator(mp->dname) + || (mp->modes & mp->enabled & mode)) + ++pum_size; + + // When there are only Terminal mode menus, using "popup Edit" results in + // pum_size being zero. + if (pum_size <= 0) + { + emsg(e_menuothermode); + return; + } + + array = (pumitem_T *)alloc_clear((unsigned)sizeof(pumitem_T) * pum_size); + if (array == NULL) + return; + + for (mp = menu->children; mp != NULL; mp = mp->next) + if (menu_is_separator(mp->dname)) + array[idx++].pum_text = (char_u *)""; + else if (mp->modes & mp->enabled & mode) + array[idx++].pum_text = mp->dname; + + pum_array = array; + pum_compute_size(); + pum_scrollbar = 0; + pum_height = pum_size; + pum_position_at_mouse(20); + + pum_selected = -1; + pum_first = 0; +# ifdef FEAT_BEVAL_TERM + p_bevalterm = TRUE; /* track mouse movement */ + mch_setmouse(TRUE); +# endif + + for (;;) + { + int c; + + pum_redraw(); + setcursor_mayforce(TRUE); + out_flush(); + + c = vgetc(); + if (c == ESC || c == Ctrl_C) + break; + else if (c == CAR || c == NL) + { + /* enter: select current item, if any, and close */ + pum_execute_menu(menu, mode); + break; + } + else if (c == 'k' || c == K_UP || c == K_MOUSEUP) + { + /* cursor up: select previous item */ + while (pum_selected > 0) + { + --pum_selected; + if (*array[pum_selected].pum_text != NUL) + break; + } + } + else if (c == 'j' || c == K_DOWN || c == K_MOUSEDOWN) + { + /* cursor down: select next item */ + while (pum_selected < pum_size - 1) + { + ++pum_selected; + if (*array[pum_selected].pum_text != NUL) + break; + } + } + else if (c == K_RIGHTMOUSE) + { + /* Right mouse down: reposition the menu. */ + vungetc(c); + break; + } + else if (c == K_LEFTDRAG || c == K_RIGHTDRAG || c == K_MOUSEMOVE) + { + /* mouse moved: select item in the mouse row */ + pum_select_mouse_pos(); + } + else if (c == K_LEFTMOUSE || c == K_LEFTMOUSE_NM || c == K_RIGHTRELEASE) + { + /* left mouse click: select clicked item, if any, and close; + * right mouse release: select clicked item, close if any */ + pum_select_mouse_pos(); + if (pum_selected >= 0) + { + pum_execute_menu(menu, mode); + break; + } + if (c == K_LEFTMOUSE || c == K_LEFTMOUSE_NM) + break; + } + } + + vim_free(array); + pum_undisplay(); +# ifdef FEAT_BEVAL_TERM + p_bevalterm = save_bevalterm; + mch_setmouse(TRUE); +# endif +} + + void +pum_make_popup(char_u *path_name, int use_mouse_pos) +{ + vimmenu_T *menu; + + if (!use_mouse_pos) + { + /* Hack: set mouse position at the cursor so that the menu pops up + * around there. */ + mouse_row = curwin->w_winrow + curwin->w_wrow; + mouse_col = curwin->w_wincol + curwin->w_wcol; + } + + menu = gui_find_menu(path_name); + if (menu != NULL) + pum_show_popupmenu(menu); +} +# endif + +#endif |