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Diffstat (limited to 'src/ui.c')
| -rw-r--r-- | src/ui.c | 3533 |
1 files changed, 3533 insertions, 0 deletions
diff --git a/src/ui.c b/src/ui.c new file mode 100644 index 0000000..0823d2d --- /dev/null +++ b/src/ui.c @@ -0,0 +1,3533 @@ +/* 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. + */ + +/* + * 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" + +#ifdef FEAT_CYGWIN_WIN32_CLIPBOARD +# define WIN32_LEAN_AND_MEAN +# include <windows.h> +# include "winclip.pro" +#endif + + void +ui_write(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, typebuf.tb_change_cnt); + return; + } +#endif +#ifndef NO_CONSOLE + /* Don't output anything in silent mode ("ex -s") unless 'verbose' set */ + if (!(silent_mode && p_verbose == 0)) + { +#if !defined(WIN3264) + 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); + +# if !defined(WIN3264) + if (output_conv.vc_type != CONV_NONE) + vim_free(tofree); +# endif + } +#endif +} + +#if defined(UNIX) || defined(VMS) || defined(PROTO) || defined(WIN3264) +/* + * 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(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 function. + * 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( + 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_CLEAR(ta_str); + 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, 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 | curbuf->b_mapped_ctrl_c) & get_real_state()) + ctrl_c_interrupts = FALSE; + } + + /* + * Here we call gui_inchar() or mch_inchar(), the GUI or machine-dependent + * input function. The functionality they implement is like this: + * + * while (not timed out) + * { + * handle-resize; + * parse-queued-messages; + * if (waited for 'updatetime') + * trigger-cursorhold; + * ui_wait_for_chars_or_timer() + * if (character available) + * break; + * } + * + * ui_wait_for_chars_or_timer() does: + * + * while (not timed out) + * { + * if (any-timer-triggered) + * invoke-timer-callback; + * wait-for-character(); + * if (character available) + * break; + * } + * + * wait-for-character() does: + * while (not timed out) + * { + * Wait for event; + * if (something on channel) + * read/write channel; + * else if (resized) + * handle_resize(); + * else if (system event) + * deal-with-system-event; + * else if (character available) + * break; + * } + * + */ + +#ifdef FEAT_GUI + if (gui.in_use) + retval = gui_inchar(buf, maxlen, wtime, tb_change_cnt); +#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; +} + +#if defined(UNIX) || defined(FEAT_GUI) || defined(PROTO) +/* + * Common code for mch_inchar() and gui_inchar(): Wait for a while or + * indefinitely until characters are available, dealing with timers and + * messages on channels. + * + * "buf" may be NULL if the available characters are not to be returned, only + * check if they are available. + * + * Return the number of characters that are available. + * If "wtime" == 0 do not wait for characters. + * If "wtime" == n wait a short time for characters. + * If "wtime" == -1 wait forever for characters. + */ + int +inchar_loop( + char_u *buf, + int maxlen, + long wtime, // don't use "time", MIPS cannot handle it + int tb_change_cnt, + int (*wait_func)(long wtime, int *interrupted, int ignore_input), + int (*resize_func)(int check_only)) +{ + int len; + int interrupted = FALSE; + int did_call_wait_func = FALSE; + int did_start_blocking = FALSE; + long wait_time; + long elapsed_time = 0; +#ifdef ELAPSED_FUNC + elapsed_T start_tv; + + ELAPSED_INIT(start_tv); +#endif + + /* repeat until we got a character or waited long enough */ + for (;;) + { + /* Check if window changed size while we were busy, perhaps the ":set + * columns=99" command was used. */ + if (resize_func != NULL) + resize_func(FALSE); + +#ifdef MESSAGE_QUEUE + // Only process messages when waiting. + if (wtime != 0) + { + parse_queued_messages(); + // If input was put directly in typeahead buffer bail out here. + if (typebuf_changed(tb_change_cnt)) + return 0; + } +#endif + if (wtime < 0 && did_start_blocking) + // blocking and already waited for p_ut + wait_time = -1; + else + { + if (wtime >= 0) + wait_time = wtime; + else + // going to block after p_ut + wait_time = p_ut; +#ifdef ELAPSED_FUNC + elapsed_time = ELAPSED_FUNC(start_tv); +#endif + wait_time -= elapsed_time; + + // If the waiting time is now zero or less, we timed out. However, + // loop at least once to check for characters and events. Matters + // when "wtime" is zero. + if (wait_time <= 0 && did_call_wait_func) + { + if (wtime >= 0) + // no character available within "wtime" + return 0; + + // No character available within 'updatetime'. + did_start_blocking = TRUE; + if (trigger_cursorhold() && maxlen >= 3 + && !typebuf_changed(tb_change_cnt)) + { + // Put K_CURSORHOLD in the input buffer or return it. + if (buf == NULL) + { + char_u ibuf[3]; + + ibuf[0] = CSI; + ibuf[1] = KS_EXTRA; + ibuf[2] = (int)KE_CURSORHOLD; + add_to_input_buf(ibuf, 3); + } + else + { + buf[0] = K_SPECIAL; + buf[1] = KS_EXTRA; + buf[2] = (int)KE_CURSORHOLD; + } + return 3; + } + + // There is no character available within 'updatetime' seconds: + // flush all the swap files to disk. Also done when + // interrupted by SIGWINCH. + before_blocking(); + continue; + } + } + +#ifdef FEAT_JOB_CHANNEL + if (wait_time < 0 || wait_time > 100L) + { + // Checking if a job ended requires polling. Do this at least + // every 100 msec. + if (has_pending_job()) + wait_time = 100L; + + // If there is readahead then parse_queued_messages() timed out and + // we should call it again soon. + if (channel_any_readahead()) + wait_time = 10L; + } +#endif +#ifdef FEAT_BEVAL_GUI + if (p_beval && wait_time > 100L) + // The 'balloonexpr' may indirectly invoke a callback while waiting + // for a character, need to check often. + wait_time = 100L; +#endif + + // Wait for a character to be typed or another event, such as the winch + // signal or an event on the monitored file descriptors. + did_call_wait_func = TRUE; + if (wait_func(wait_time, &interrupted, FALSE)) + { + // If input was put directly in typeahead buffer bail out here. + if (typebuf_changed(tb_change_cnt)) + return 0; + + // We might have something to return now. + if (buf == NULL) + // "buf" is NULL, we were just waiting, not actually getting + // input. + return input_available(); + + len = read_from_input_buf(buf, (long)maxlen); + if (len > 0) + return len; + continue; + } + // Timed out or interrupted with no character available. + +#ifndef ELAPSED_FUNC + // estimate the elapsed time + elapsed_time += wait_time; +#endif + + if ((resize_func != NULL && resize_func(TRUE)) +#if defined(FEAT_CLIENTSERVER) && defined(UNIX) + || server_waiting() +#endif +#ifdef MESSAGE_QUEUE + || interrupted +#endif + || wait_time > 0 + || (wtime < 0 && !did_start_blocking)) + // no character available, but something to be done, keep going + continue; + + // no character available or interrupted, return zero + break; + } + return 0; +} +#endif + +#if defined(FEAT_TIMERS) || defined(PROTO) +/* + * Wait for a timer to fire or "wait_func" to return non-zero. + * Returns OK when something was read. + * Returns FAIL when it timed out or was interrupted. + */ + int +ui_wait_for_chars_or_timer( + long wtime, + int (*wait_func)(long wtime, int *interrupted, int ignore_input), + int *interrupted, + int ignore_input) +{ + int due_time; + long remaining = wtime; + int tb_change_cnt = typebuf.tb_change_cnt; +# ifdef FEAT_JOB_CHANNEL + int brief_wait = FALSE; +# endif + + // When waiting very briefly don't trigger timers. + if (wtime >= 0 && wtime < 10L) + return wait_func(wtime, NULL, ignore_input); + + while (wtime < 0 || remaining > 0) + { + // Trigger timers and then get the time in wtime until the next one is + // due. Wait up to that time. + due_time = check_due_timer(); + if (typebuf.tb_change_cnt != tb_change_cnt) + { + /* timer may have used feedkeys() */ + return FAIL; + } + if (due_time <= 0 || (wtime > 0 && due_time > remaining)) + due_time = remaining; +# ifdef FEAT_JOB_CHANNEL + if ((due_time < 0 || due_time > 10L) +# ifdef FEAT_GUI + && !gui.in_use +# endif + && (has_pending_job() || channel_any_readahead())) + { + // There is a pending job or channel, should return soon in order + // to handle them ASAP. Do check for input briefly. + due_time = 10L; + brief_wait = TRUE; + } +# endif + if (wait_func(due_time, interrupted, ignore_input)) + return OK; + if ((interrupted != NULL && *interrupted) +# ifdef FEAT_JOB_CHANNEL + || brief_wait +# endif + ) + // Nothing available, but need to return so that side effects get + // handled, such as handling a message on a channel. + return FAIL; + if (wtime > 0) + remaining -= due_time; + } + return FAIL; +} +#endif + +/* + * Return non-zero if a character is available. + */ + int +ui_char_avail(void) +{ +#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(long msec, int ignoreinput) +{ +#ifdef FEAT_GUI + if (gui.in_use && !ignoreinput) + gui_wait_for_chars(msec, typebuf.tb_change_cnt); + 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(void) +{ +#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(void) +{ + 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(void) +{ + 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. + */ + void +ui_set_shellsize( + int mustset UNUSED) /* set by the user */ +{ +#ifdef FEAT_GUI + if (gui.in_use) + gui_set_shellsize(mustset, TRUE, RESIZE_BOTH); + else +#endif + mch_set_shellsize(); +} + +/* + * Called when Rows and/or Columns changed. Adjust scroll region and mouse + * region. + */ + void +ui_new_shellsize(void) +{ + if (full_screen && !exiting) + { +#ifdef FEAT_GUI + if (gui.in_use) + gui_new_shellsize(); + else +#endif + mch_new_shellsize(); + } +} + + void +ui_breakcheck(void) +{ + ui_breakcheck_force(FALSE); +} + +/* + * When "force" is true also check when the terminal is not in raw mode. + * This is useful to read input on channels. + */ + void +ui_breakcheck_force(int force) +{ + static int recursive = FALSE; + int save_updating_screen = updating_screen; + + // We could be called recursively if stderr is redirected, calling + // fill_input_buf() calls settmode() when stdin isn't a tty. settmode() + // calls vgetorpeek() which calls ui_breakcheck() again. + if (recursive) + return; + recursive = TRUE; + + // We do not want gui_resize_shell() to redraw the screen here. + ++updating_screen; + +#ifdef FEAT_GUI + if (gui.in_use) + gui_mch_update(); + else +#endif + mch_breakcheck(force); + + if (save_updating_screen) + updating_screen = TRUE; + else + reset_updating_screen(FALSE); + + recursive = FALSE; +} + +/***************************************************************************** + * 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(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(VimClipboard *clip) +{ + 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_POS(VIsual, curwin->w_cursor)) + { + start = VIsual; + end = curwin->w_cursor; + if (has_mbyte) + end.col += (*mb_ptr2len)(ml_get_cursor()) - 1; + } + else + { + start = curwin->w_cursor; + end = VIsual; + } + if (!EQUAL_POS(clip->start, start) + || !EQUAL_POS(clip->end, end) + || clip->vmode != VIsual_mode) + { + clip_clear_selection(clip); + clip->start = start; + clip->end = end; + clip->vmode = VIsual_mode; + clip_free_selection(clip); + clip_own_selection(clip); + clip_gen_set_selection(clip); + } + } +} + + void +clip_own_selection(VimClipboard *cbd) +{ + /* + * Also want to check somehow that we are reading from the keyboard rather + * than a mapping etc. + */ +#ifdef FEAT_X11 + /* Always own the selection, we might have lost it without being + * notified, e.g. during a ":sh" command. */ + if (cbd->available) + { + int was_owned = cbd->owned; + + cbd->owned = (clip_gen_own_selection(cbd) == OK); + if (!was_owned && (cbd == &clip_star || cbd == &clip_plus)) + { + /* 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) + && (cbd == &clip_star ? clip_isautosel_star() + : clip_isautosel_plus()) + && HL_ATTR(HLF_V) != HL_ATTR(HLF_VNC)) + redraw_curbuf_later(INVERTED_ALL); + } + } +#else + /* Only own the clipboard when we didn't own it yet. */ + if (!cbd->owned && cbd->available) + cbd->owned = (clip_gen_own_selection(cbd) == OK); +#endif +} + + void +clip_lose_selection(VimClipboard *cbd) +{ +#ifdef FEAT_X11 + int was_owned = cbd->owned; +#endif + int visual_selection = FALSE; + + if (cbd == &clip_star || cbd == &clip_plus) + visual_selection = TRUE; + + clip_free_selection(cbd); + cbd->owned = FALSE; + if (visual_selection) + clip_clear_selection(cbd); + 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) + && (cbd == &clip_star ? + clip_isautosel_star() : clip_isautosel_plus()) + && HL_ATTR(HLF_V) != HL_ATTR(HLF_VNC)) + { + update_curbuf(INVERTED_ALL); + setcursor(); + cursor_on(); + out_flush_cursor(TRUE, FALSE); + } + } +#endif +} + + static void +clip_copy_selection(VimClipboard *clip) +{ + if (VIsual_active && (State & NORMAL) && clip->available) + { + clip_update_selection(clip); + clip_free_selection(clip); + clip_own_selection(clip); + if (clip->owned) + clip_get_selection(clip); + clip_gen_set_selection(clip); + } +} + +/* + * Save and restore clip_unnamed before doing possibly many changes. This + * prevents accessing the clipboard very often which might slow down Vim + * considerably. + */ +static int global_change_count = 0; /* if set, inside a start_global_changes */ +static int clipboard_needs_update = FALSE; /* clipboard needs to be updated */ +static int clip_did_set_selection = TRUE; + +/* + * Save clip_unnamed and reset it. + */ + void +start_global_changes(void) +{ + if (++global_change_count > 1) + return; + clip_unnamed_saved = clip_unnamed; + clipboard_needs_update = FALSE; + + if (clip_did_set_selection) + { + clip_unnamed = FALSE; + clip_did_set_selection = FALSE; + } +} + +/* + * Return TRUE if setting the clipboard was postponed, it already contains the + * right text. + */ + int +is_clipboard_needs_update() +{ + return clipboard_needs_update; +} + +/* + * Restore clip_unnamed and set the selection when needed. + */ + void +end_global_changes(void) +{ + if (--global_change_count > 0) + /* recursive */ + return; + if (!clip_did_set_selection) + { + clip_did_set_selection = TRUE; + clip_unnamed = clip_unnamed_saved; + clip_unnamed_saved = FALSE; + if (clipboard_needs_update) + { + /* only store something in the clipboard, + * if we have yanked anything to it */ + if (clip_unnamed & CLIP_UNNAMED) + { + clip_own_selection(&clip_star); + clip_gen_set_selection(&clip_star); + } + if (clip_unnamed & CLIP_UNNAMED_PLUS) + { + clip_own_selection(&clip_plus); + clip_gen_set_selection(&clip_plus); + } + } + } + clipboard_needs_update = FALSE; +} + +/* + * Called when Visual mode is ended: update the selection. + */ + void +clip_auto_select(void) +{ + if (clip_isautosel_star()) + clip_copy_selection(&clip_star); + if (clip_isautosel_plus()) + clip_copy_selection(&clip_plus); +} + +/* + * Return TRUE if automatic selection of Visual area is desired for the * + * register. + */ + int +clip_isautosel_star(void) +{ + return ( +#ifdef FEAT_GUI + gui.in_use ? (vim_strchr(p_go, GO_ASEL) != NULL) : +#endif + clip_autoselect_star); +} + +/* + * Return TRUE if automatic selection of Visual area is desired for the + + * register. + */ + int +clip_isautosel_plus(void) +{ + return ( +#ifdef FEAT_GUI + gui.in_use ? (vim_strchr(p_go, GO_ASELPLUS) != NULL) : +#endif + clip_autoselect_plus); +} + + +/* + * Stuff for general mouse selection, without using Visual mode. + */ + +static void clip_invert_area(int, int, int, int, int how); +static void clip_invert_rectangle(int row, int col, int height, int width, int invert); +static void clip_get_word_boundaries(VimClipboard *, int, int); +static int clip_get_line_end(int); +static void clip_update_modeless_selection(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(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( + 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(int col, int row, int repeated_click) +{ + VimClipboard *cb = &clip_star; + + if (cb->state == SELECT_DONE) + clip_clear_selection(cb); + + row = check_row(row); + col = check_col(col); + col = mb_fix_col(col, row); + + 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( + 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_star() + || ( +#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); + col = mb_fix_col(col, row); + + 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 + { + if (has_mbyte && mb_lefthalve(row, col)) + slen = 2; + clip_update_modeless_selection(cb, cb->origin_row, + cb->origin_start_col, row, col + slen); + } + } + else + { + if (has_mbyte + && mb_lefthalve(cb->origin_row, cb->origin_start_col)) + slen = 2; + 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 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(int row, int 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 *cbd) +{ + + if (cbd->state == SELECT_CLEARED) + return; + + clip_invert_area((int)cbd->start.lnum, cbd->start.col, (int)cbd->end.lnum, + cbd->end.col, CLIP_CLEAR); + cbd->state = SELECT_CLEARED; +} + +/* + * Clear the selection if any lines from "row1" to "row2" are inside of it. + */ + void +clip_may_clear_selection(int row1, int row2) +{ + if (clip_star.state == SELECT_DONE + && row2 >= clip_star.start.lnum + && row1 <= clip_star.end.lnum) + clip_clear_selection(&clip_star); +} + +/* + * Called before the screen is scrolled up or down. Adjusts the line numbers + * of the selection. Call with big number when clearing the screen. + */ + void +clip_scroll_selection( + int rows) /* negative for scroll down */ +{ + int lnum; + + if (clip_star.state == SELECT_CLEARED) + return; + + lnum = clip_star.start.lnum - rows; + if (lnum <= 0) + clip_star.start.lnum = 0; + else if (lnum >= screen_Rows) /* scrolled off of the screen */ + clip_star.state = SELECT_CLEARED; + else + clip_star.start.lnum = lnum; + + lnum = clip_star.end.lnum - rows; + if (lnum < 0) /* scrolled off of the screen */ + clip_star.state = SELECT_CLEARED; + else if (lnum >= screen_Rows) + clip_star.end.lnum = screen_Rows - 1; + else + clip_star.end.lnum = lnum; +} + +/* + * Invert a region of the display between a starting and ending row and column + * Values for "how": + * CLIP_CLEAR: undo inversion + * CLIP_SET: set inversion + * CLIP_TOGGLE: set inversion if pos1 < pos2, undo inversion otherwise. + * 0: invert (GUI only). + */ + static void +clip_invert_area( + int row1, + int col1, + int row2, + int col2, + int how) +{ + int invert = FALSE; + + if (how == CLIP_SET) + invert = TRUE; + + /* Swap the from and to positions so the from is always before */ + if (clip_compare_pos(row1, col1, row2, col2) > 0) + { + int tmp_row, tmp_col; + + tmp_row = row1; + tmp_col = col1; + row1 = row2; + col1 = col2; + row2 = tmp_row; + col2 = tmp_col; + } + else if (how == CLIP_TOGGLE) + invert = TRUE; + + /* If all on the same line, do it the easy way */ + if (row1 == row2) + { + clip_invert_rectangle(row1, col1, 1, col2 - col1, invert); + } + else + { + /* Handle a piece of the first line */ + if (col1 > 0) + { + clip_invert_rectangle(row1, col1, 1, (int)Columns - col1, invert); + row1++; + } + + /* Handle a piece of the last line */ + if (col2 < Columns - 1) + { + clip_invert_rectangle(row2, 0, 1, col2, invert); + row2--; + } + + /* Handle the rectangle thats left */ + if (row2 >= row1) + clip_invert_rectangle(row1, 0, row2 - row1 + 1, (int)Columns, + invert); + } +} + +/* + * Invert or un-invert a rectangle of the screen. + * "invert" is true if the result is inverted. + */ + static void +clip_invert_rectangle( + int row, + int col, + int height, + int width, + int invert) +{ +#ifdef FEAT_GUI + if (gui.in_use) + gui_mch_invert_rectangle(row, col, height, width); + else +#endif + screen_draw_rectangle(row, col, height, width, invert); +} + +/* + * Copy the currently selected area into the '*' register so it will be + * available for pasting. + * When "both" is TRUE also copy to the '+' register. + */ + void +clip_copy_modeless_selection(int both UNUSED) +{ + char_u *buffer; + char_u *bufp; + int row; + int start_col; + int end_col; + int line_end_col; + int add_newline_flag = FALSE; + int len; + char_u *p; + int row1 = clip_star.start.lnum; + int col1 = clip_star.start.col; + int row2 = clip_star.end.lnum; + int col2 = clip_star.end.col; + + /* Can't use ScreenLines unless initialized */ + if (ScreenLines == NULL) + return; + + /* + * Make sure row1 <= row2, and if row1 == row2 that col1 <= col2. + */ + if (row1 > row2) + { + row = row1; row1 = row2; row2 = row; + row = col1; col1 = col2; col2 = row; + } + else if (row1 == row2 && col1 > col2) + { + row = col1; col1 = col2; col2 = row; + } + /* correct starting point for being on right halve of double-wide char */ + p = ScreenLines + LineOffset[row1]; + if (enc_dbcs != 0) + col1 -= (*mb_head_off)(p, p + col1); + else if (enc_utf8 && p[col1] == 0) + --col1; + + /* Create a temporary buffer for storing the text */ + len = (row2 - row1 + 1) * Columns + 1; + if (enc_dbcs != 0) + len *= 2; /* max. 2 bytes per display cell */ + else if (enc_utf8) + len *= MB_MAXBYTES; + buffer = lalloc((long_u)len, TRUE); + if (buffer == NULL) /* out of memory */ + return; + + /* Process each row in the selection */ + for (bufp = buffer, row = row1; row <= row2; row++) + { + if (row == row1) + start_col = col1; + else + start_col = 0; + + if (row == row2) + end_col = col2; + else + end_col = Columns; + + line_end_col = clip_get_line_end(row); + + /* See if we need to nuke some trailing whitespace */ + if (end_col >= Columns && (row < row2 || end_col > line_end_col)) + { + /* Get rid of trailing whitespace */ + end_col = line_end_col; + if (end_col < start_col) + end_col = start_col; + + /* If the last line extended to the end, add an extra newline */ + if (row == row2) + add_newline_flag = TRUE; + } + + /* If after the first row, we need to always add a newline */ + if (row > row1 && !LineWraps[row - 1]) + *bufp++ = NL; + + if (row < screen_Rows && end_col <= screen_Columns) + { + if (enc_dbcs != 0) + { + int i; + + p = ScreenLines + LineOffset[row]; + for (i = start_col; i < end_col; ++i) + if (enc_dbcs == DBCS_JPNU && p[i] == 0x8e) + { + /* single-width double-byte char */ + *bufp++ = 0x8e; + *bufp++ = ScreenLines2[LineOffset[row] + i]; + } + else + { + *bufp++ = p[i]; + if (MB_BYTE2LEN(p[i]) == 2) + *bufp++ = p[++i]; + } + } + else if (enc_utf8) + { + int off; + int i; + int ci; + + off = LineOffset[row]; + for (i = start_col; i < end_col; ++i) + { + /* The base character is either in ScreenLinesUC[] or + * ScreenLines[]. */ + if (ScreenLinesUC[off + i] == 0) + *bufp++ = ScreenLines[off + i]; + else + { + bufp += utf_char2bytes(ScreenLinesUC[off + i], bufp); + for (ci = 0; ci < Screen_mco; ++ci) + { + /* Add a composing character. */ + if (ScreenLinesC[ci][off + i] == 0) + break; + bufp += utf_char2bytes(ScreenLinesC[ci][off + i], + bufp); + } + } + /* Skip right halve of double-wide character. */ + if (ScreenLines[off + i + 1] == 0) + ++i; + } + } + else + { + STRNCPY(bufp, ScreenLines + LineOffset[row] + start_col, + end_col - start_col); + bufp += end_col - start_col; + } + } + } + + /* Add a newline at the end if the selection ended there */ + if (add_newline_flag) + *bufp++ = NL; + + /* First cleanup any old selection and become the owner. */ + clip_free_selection(&clip_star); + clip_own_selection(&clip_star); + + /* Yank the text into the '*' register. */ + clip_yank_selection(MCHAR, buffer, (long)(bufp - buffer), &clip_star); + + /* Make the register contents available to the outside world. */ + clip_gen_set_selection(&clip_star); + +#ifdef FEAT_X11 + if (both) + { + /* Do the same for the '+' register. */ + clip_free_selection(&clip_plus); + clip_own_selection(&clip_plus); + clip_yank_selection(MCHAR, buffer, (long)(bufp - buffer), &clip_plus); + clip_gen_set_selection(&clip_plus); + } +#endif + vim_free(buffer); +} + +/* + * Find the starting and ending positions of the word at the given row and + * column. Only white-separated words are recognized here. + */ +#define CHAR_CLASS(c) (c <= ' ' ? ' ' : vim_iswordc(c)) + + static void +clip_get_word_boundaries(VimClipboard *cb, int row, int col) +{ + int start_class; + int temp_col; + char_u *p; + int mboff; + + if (row >= screen_Rows || col >= screen_Columns || ScreenLines == NULL) + return; + + p = ScreenLines + LineOffset[row]; + /* Correct for starting in the right halve of a double-wide char */ + if (enc_dbcs != 0) + col -= dbcs_screen_head_off(p, p + col); + else if (enc_utf8 && p[col] == 0) + --col; + start_class = CHAR_CLASS(p[col]); + + temp_col = col; + for ( ; temp_col > 0; temp_col--) + if (enc_dbcs != 0 + && (mboff = dbcs_screen_head_off(p, p + temp_col - 1)) > 0) + temp_col -= mboff; + else if (CHAR_CLASS(p[temp_col - 1]) != start_class + && !(enc_utf8 && p[temp_col - 1] == 0)) + break; + cb->word_start_col = temp_col; + + temp_col = col; + for ( ; temp_col < screen_Columns; temp_col++) + if (enc_dbcs != 0 && dbcs_ptr2cells(p + temp_col) == 2) + ++temp_col; + else if (CHAR_CLASS(p[temp_col]) != start_class + && !(enc_utf8 && p[temp_col] == 0)) + break; + cb->word_end_col = temp_col; +} + +/* + * Find the column position for the last non-whitespace character on the given + * line. + */ + static int +clip_get_line_end(int row) +{ + int i; + + if (row >= screen_Rows || ScreenLines == NULL) + return 0; + for (i = screen_Columns; i > 0; i--) + if (ScreenLines[LineOffset[row] + i - 1] != ' ') + break; + return i; +} + +/* + * Update the currently selected region by adding and/or subtracting from the + * beginning or end and inverting the changed area(s). + */ + static void +clip_update_modeless_selection( + VimClipboard *cb, + int row1, + int col1, + int row2, + int col2) +{ + /* See if we changed at the beginning of the selection */ + if (row1 != cb->start.lnum || col1 != (int)cb->start.col) + { + clip_invert_area(row1, col1, (int)cb->start.lnum, cb->start.col, + CLIP_TOGGLE); + cb->start.lnum = row1; + cb->start.col = col1; + } + + /* See if we changed at the end of the selection */ + if (row2 != cb->end.lnum || col2 != (int)cb->end.col) + { + clip_invert_area((int)cb->end.lnum, cb->end.col, row2, col2, + CLIP_TOGGLE); + cb->end.lnum = row2; + cb->end.col = col2; + } +} + + int +clip_gen_own_selection(VimClipboard *cbd) +{ +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI + if (gui.in_use) + return clip_mch_own_selection(cbd); + else +# endif + return clip_xterm_own_selection(cbd); +#else + return clip_mch_own_selection(cbd); +#endif +} + + void +clip_gen_lose_selection(VimClipboard *cbd) +{ +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI + if (gui.in_use) + clip_mch_lose_selection(cbd); + else +# endif + clip_xterm_lose_selection(cbd); +#else + clip_mch_lose_selection(cbd); +#endif +} + + void +clip_gen_set_selection(VimClipboard *cbd) +{ + if (!clip_did_set_selection) + { + /* Updating postponed, so that accessing the system clipboard won't + * hang Vim when accessing it many times (e.g. on a :g comand). */ + if ((cbd == &clip_plus && (clip_unnamed_saved & CLIP_UNNAMED_PLUS)) + || (cbd == &clip_star && (clip_unnamed_saved & CLIP_UNNAMED))) + { + clipboard_needs_update = TRUE; + return; + } + } +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI + if (gui.in_use) + clip_mch_set_selection(cbd); + else +# endif + clip_xterm_set_selection(cbd); +#else + clip_mch_set_selection(cbd); +#endif +} + + void +clip_gen_request_selection(VimClipboard *cbd) +{ +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI + if (gui.in_use) + clip_mch_request_selection(cbd); + else +# endif + clip_xterm_request_selection(cbd); +#else + clip_mch_request_selection(cbd); +#endif +} + +#if (defined(FEAT_X11) && defined(USE_SYSTEM)) || defined(PROTO) + int +clip_gen_owner_exists(VimClipboard *cbd UNUSED) +{ +#ifdef FEAT_XCLIPBOARD +# ifdef FEAT_GUI_GTK + if (gui.in_use) + return clip_gtk_owner_exists(cbd); + else +# endif + return clip_x11_owner_exists(cbd); +#else + return TRUE; +#endif +} +#endif + +#endif /* FEAT_CLIPBOARD */ + +/***************************************************************************** + * Functions that handle the input buffer. + * This is used for any GUI version, and the unix terminal version. + * + * For Unix, the input characters are buffered to be able to check for a + * CTRL-C. This should be done with signals, but I don't know how to do that + * in a portable way for a tty in RAW mode. + * + * For the client-server code in the console the received keys are put in the + * input buffer. + */ + +#if defined(USE_INPUT_BUF) || defined(PROTO) + +/* + * Internal typeahead buffer. Includes extra space for long key code + * descriptions which would otherwise overflow. The buffer is considered full + * when only this extra space (or part of it) remains. + */ +#if defined(FEAT_JOB_CHANNEL) || defined(FEAT_CLIENTSERVER) + /* + * NetBeans stuffs debugger commands into the input buffer. + * This requires a larger buffer... + * (Madsen) Go with this for remote input as well ... + */ +# define INBUFLEN 4096 +#else +# define INBUFLEN 250 +#endif + +static char_u inbuf[INBUFLEN + MAX_KEY_CODE_LEN]; +static int inbufcount = 0; /* number of chars in inbuf[] */ + +/* + * vim_is_input_buf_full(), vim_is_input_buf_empty(), add_to_input_buf(), and + * trash_input_buf() are functions for manipulating the input buffer. These + * are used by the gui_* calls when a GUI is used to handle keyboard input. + */ + + int +vim_is_input_buf_full(void) +{ + return (inbufcount >= INBUFLEN); +} + + int +vim_is_input_buf_empty(void) +{ + return (inbufcount == 0); +} + +#if defined(FEAT_OLE) || defined(PROTO) + int +vim_free_in_input_buf(void) +{ + return (INBUFLEN - inbufcount); +} +#endif + +#if defined(FEAT_GUI_GTK) || defined(PROTO) + int +vim_used_in_input_buf(void) +{ + return inbufcount; +} +#endif + +/* + * Return the current contents of the input buffer and make it empty. + * The returned pointer must be passed to set_input_buf() later. + */ + char_u * +get_input_buf(void) +{ + garray_T *gap; + + /* We use a growarray to store the data pointer and the length. */ + gap = (garray_T *)alloc((unsigned)sizeof(garray_T)); + if (gap != NULL) + { + /* Add one to avoid a zero size. */ + gap->ga_data = alloc((unsigned)inbufcount + 1); + if (gap->ga_data != NULL) + mch_memmove(gap->ga_data, inbuf, (size_t)inbufcount); + gap->ga_len = inbufcount; + } + trash_input_buf(); + return (char_u *)gap; +} + +/* + * Restore the input buffer with a pointer returned from get_input_buf(). + * The allocated memory is freed, this only works once! + */ + void +set_input_buf(char_u *p) +{ + garray_T *gap = (garray_T *)p; + + if (gap != NULL) + { + if (gap->ga_data != NULL) + { + mch_memmove(inbuf, gap->ga_data, gap->ga_len); + inbufcount = gap->ga_len; + vim_free(gap->ga_data); + } + vim_free(gap); + } +} + +/* + * Add the given bytes to the input buffer + * Special keys start with CSI. A real CSI must have been translated to + * CSI KS_EXTRA KE_CSI. K_SPECIAL doesn't require translation. + */ + void +add_to_input_buf(char_u *s, int len) +{ + if (inbufcount + len > INBUFLEN + MAX_KEY_CODE_LEN) + return; /* Shouldn't ever happen! */ + +#ifdef FEAT_HANGULIN + if ((State & (INSERT|CMDLINE)) && hangul_input_state_get()) + if ((len = hangul_input_process(s, len)) == 0) + return; +#endif + + while (len--) + inbuf[inbufcount++] = *s++; +} + +/* + * Add "str[len]" to the input buffer while escaping CSI bytes. + */ + void +add_to_input_buf_csi(char_u *str, int len) +{ + int i; + char_u buf[2]; + + for (i = 0; i < len; ++i) + { + add_to_input_buf(str + i, 1); + if (str[i] == CSI) + { + /* Turn CSI into K_CSI. */ + buf[0] = KS_EXTRA; + buf[1] = (int)KE_CSI; + add_to_input_buf(buf, 2); + } + } +} + +#if defined(FEAT_HANGULIN) || defined(PROTO) + void +push_raw_key(char_u *s, int len) +{ + char_u *tmpbuf; + char_u *inp = s; + + /* use the conversion result if possible */ + tmpbuf = hangul_string_convert(s, &len); + if (tmpbuf != NULL) + inp = tmpbuf; + + for (; len--; inp++) + { + inbuf[inbufcount++] = *inp; + if (*inp == CSI) + { + /* Turn CSI into K_CSI. */ + inbuf[inbufcount++] = KS_EXTRA; + inbuf[inbufcount++] = (int)KE_CSI; + } + } + vim_free(tmpbuf); +} +#endif + +/* Remove everything from the input buffer. Called when ^C is found */ + void +trash_input_buf(void) +{ + inbufcount = 0; +} + +/* + * Read as much data from the input buffer as possible up to maxlen, and store + * it in buf. + */ + int +read_from_input_buf(char_u *buf, long maxlen) +{ + if (inbufcount == 0) /* if the buffer is empty, fill it */ + fill_input_buf(TRUE); + if (maxlen > inbufcount) + maxlen = inbufcount; + mch_memmove(buf, inbuf, (size_t)maxlen); + inbufcount -= maxlen; + if (inbufcount) + mch_memmove(inbuf, inbuf + maxlen, (size_t)inbufcount); + return (int)maxlen; +} + + void +fill_input_buf(int exit_on_error UNUSED) +{ +#if defined(UNIX) || defined(VMS) || defined(MACOS_X) + int len; + int try; + static int did_read_something = FALSE; + static char_u *rest = NULL; /* unconverted rest of previous read */ + static int restlen = 0; + int unconverted; +#endif + +#ifdef FEAT_GUI + if (gui.in_use +# ifdef NO_CONSOLE_INPUT + /* Don't use the GUI input when the window hasn't been opened yet. + * We get here from ui_inchar() when we should try reading from stdin. */ + && !no_console_input() +# endif + ) + { + gui_mch_update(); + return; + } +#endif +#if defined(UNIX) || defined(VMS) || defined(MACOS_X) + if (vim_is_input_buf_full()) + return; + /* + * Fill_input_buf() is only called when we really need a character. + * If we can't get any, but there is some in the buffer, just return. + * If we can't get any, and there isn't any in the buffer, we give up and + * exit Vim. + */ +# ifdef __BEOS__ + /* + * On the BeBox version (for now), all input is secretly performed within + * beos_select() which is called from RealWaitForChar(). + */ + while (!vim_is_input_buf_full() && RealWaitForChar(read_cmd_fd, 0, NULL)) + ; + len = inbufcount; + inbufcount = 0; +# else + + if (rest != NULL) + { + /* Use remainder of previous call, starts with an invalid character + * that may become valid when reading more. */ + if (restlen > INBUFLEN - inbufcount) + unconverted = INBUFLEN - inbufcount; + else + unconverted = restlen; + mch_memmove(inbuf + inbufcount, rest, unconverted); + if (unconverted == restlen) + VIM_CLEAR(rest); + else + { + restlen -= unconverted; + mch_memmove(rest, rest + unconverted, restlen); + } + inbufcount += unconverted; + } + else + unconverted = 0; + + len = 0; /* to avoid gcc warning */ + for (try = 0; try < 100; ++try) + { + size_t readlen = (size_t)((INBUFLEN - inbufcount) + / input_conv.vc_factor); +# ifdef VMS + len = vms_read((char *)inbuf + inbufcount, readlen); +# else + len = read(read_cmd_fd, (char *)inbuf + inbufcount, readlen); +# endif + + if (len > 0 || got_int) + break; + /* + * If reading stdin results in an error, continue reading stderr. + * This helps when using "foo | xargs vim". + */ + if (!did_read_something && !isatty(read_cmd_fd) && read_cmd_fd == 0) + { + int m = cur_tmode; + + /* We probably set the wrong file descriptor to raw mode. Switch + * back to cooked mode, use another descriptor and set the mode to + * what it was. */ + settmode(TMODE_COOK); +#ifdef HAVE_DUP + /* Use stderr for stdin, also works for shell commands. */ + close(0); + vim_ignored = dup(2); +#else + read_cmd_fd = 2; /* read from stderr instead of stdin */ +#endif + settmode(m); + } + if (!exit_on_error) + return; + } +# endif + if (len <= 0 && !got_int) + read_error_exit(); + if (len > 0) + did_read_something = TRUE; + if (got_int) + { + /* Interrupted, pretend a CTRL-C was typed. */ + inbuf[0] = 3; + inbufcount = 1; + } + else + { + /* + * May perform conversion on the input characters. + * Include the unconverted rest of the previous call. + * If there is an incomplete char at the end it is kept for the next + * time, reading more bytes should make conversion possible. + * Don't do this in the unlikely event that the input buffer is too + * small ("rest" still contains more bytes). + */ + if (input_conv.vc_type != CONV_NONE) + { + inbufcount -= unconverted; + len = convert_input_safe(inbuf + inbufcount, + len + unconverted, INBUFLEN - inbufcount, + rest == NULL ? &rest : NULL, &restlen); + } + while (len-- > 0) + { + /* + * if a CTRL-C was typed, remove it from the buffer and set got_int + */ + if (inbuf[inbufcount] == 3 && ctrl_c_interrupts) + { + /* remove everything typed before the CTRL-C */ + mch_memmove(inbuf, inbuf + inbufcount, (size_t)(len + 1)); + inbufcount = 0; + got_int = TRUE; + } + ++inbufcount; + } + } +#endif /* UNIX or VMS*/ +} +#endif /* defined(UNIX) || defined(FEAT_GUI) || defined(VMS) */ + +/* + * Exit because of an input read error. + */ + void +read_error_exit(void) +{ + if (silent_mode) /* Normal way to exit for "ex -s" */ + getout(0); + STRCPY(IObuff, _("Vim: Error reading input, exiting...\n")); + preserve_exit(); +} + +#if defined(CURSOR_SHAPE) || defined(PROTO) +/* + * May update the shape of the cursor. + */ + void +ui_cursor_shape_forced(int forced) +{ +# ifdef FEAT_GUI + if (gui.in_use) + gui_update_cursor_later(); + else +# endif + term_cursor_mode(forced); + +# ifdef MCH_CURSOR_SHAPE + mch_update_cursor(); +# endif + +# ifdef FEAT_CONCEAL + conceal_check_cursor_line(); +# endif +} + + void +ui_cursor_shape(void) +{ + ui_cursor_shape_forced(FALSE); +} +#endif + +/* + * Check bounds for column number + */ + int +check_col(int col) +{ + if (col < 0) + return 0; + if (col >= (int)screen_Columns) + return (int)screen_Columns - 1; + return col; +} + +/* + * Check bounds for row number + */ + int +check_row(int row) +{ + if (row < 0) + return 0; + if (row >= (int)screen_Rows) + return (int)screen_Rows - 1; + return row; +} + +/* + * Stuff for the X clipboard. Shared between VMS and Unix. + */ + +#if defined(FEAT_XCLIPBOARD) || defined(FEAT_GUI_X11) || defined(PROTO) +# include <X11/Xatom.h> +# include <X11/Intrinsic.h> + +/* + * Open the application context (if it hasn't been opened yet). + * Used for Motif and Athena GUI and the xterm clipboard. + */ + void +open_app_context(void) +{ + if (app_context == NULL) + { + XtToolkitInitialize(); + app_context = XtCreateApplicationContext(); + } +} + +static Atom vim_atom; /* Vim's own special selection format */ +static Atom vimenc_atom; /* Vim's extended selection format */ +static Atom utf8_atom; +static Atom compound_text_atom; +static Atom text_atom; +static Atom targets_atom; +static Atom timestamp_atom; /* Used to get a timestamp */ + + void +x11_setup_atoms(Display *dpy) +{ + vim_atom = XInternAtom(dpy, VIM_ATOM_NAME, False); + vimenc_atom = XInternAtom(dpy, VIMENC_ATOM_NAME,False); + utf8_atom = XInternAtom(dpy, "UTF8_STRING", False); + compound_text_atom = XInternAtom(dpy, "COMPOUND_TEXT", False); + text_atom = XInternAtom(dpy, "TEXT", False); + targets_atom = XInternAtom(dpy, "TARGETS", False); + clip_star.sel_atom = XA_PRIMARY; + clip_plus.sel_atom = XInternAtom(dpy, "CLIPBOARD", False); + timestamp_atom = XInternAtom(dpy, "TIMESTAMP", False); +} + +/* + * X Selection stuff, for cutting and pasting text to other windows. + */ + +static Boolean clip_x11_convert_selection_cb(Widget w, Atom *sel_atom, Atom *target, Atom *type, XtPointer *value, long_u *length, int *format); +static void clip_x11_lose_ownership_cb(Widget w, Atom *sel_atom); +static void clip_x11_notify_cb(Widget w, Atom *sel_atom, Atom *target); + +/* + * Property callback to get a timestamp for XtOwnSelection. + */ + static void +clip_x11_timestamp_cb( + Widget w, + XtPointer n UNUSED, + XEvent *event, + Boolean *cont UNUSED) +{ + Atom actual_type; + int format; + unsigned long nitems, bytes_after; + unsigned char *prop=NULL; + XPropertyEvent *xproperty=&event->xproperty; + + /* Must be a property notify, state can't be Delete (True), has to be + * one of the supported selection types. */ + if (event->type != PropertyNotify || xproperty->state + || (xproperty->atom != clip_star.sel_atom + && xproperty->atom != clip_plus.sel_atom)) + return; + + if (XGetWindowProperty(xproperty->display, xproperty->window, + xproperty->atom, 0, 0, False, timestamp_atom, &actual_type, &format, + &nitems, &bytes_after, &prop)) + return; + + if (prop) + XFree(prop); + + /* Make sure the property type is "TIMESTAMP" and it's 32 bits. */ + if (actual_type != timestamp_atom || format != 32) + return; + + /* Get the selection, using the event timestamp. */ + if (XtOwnSelection(w, xproperty->atom, xproperty->time, + clip_x11_convert_selection_cb, clip_x11_lose_ownership_cb, + clip_x11_notify_cb) == OK) + { + /* Set the "owned" flag now, there may have been a call to + * lose_ownership_cb in between. */ + if (xproperty->atom == clip_plus.sel_atom) + clip_plus.owned = TRUE; + else + clip_star.owned = TRUE; + } +} + + void +x11_setup_selection(Widget w) +{ + XtAddEventHandler(w, PropertyChangeMask, False, + /*(XtEventHandler)*/clip_x11_timestamp_cb, (XtPointer)NULL); +} + + static void +clip_x11_request_selection_cb( + Widget w UNUSED, + XtPointer success, + Atom *sel_atom, + Atom *type, + XtPointer value, + long_u *length, + int *format) +{ + int motion_type = MAUTO; + long_u len; + char_u *p; + char **text_list = NULL; + VimClipboard *cbd; + char_u *tmpbuf = NULL; + + if (*sel_atom == clip_plus.sel_atom) + cbd = &clip_plus; + else + cbd = &clip_star; + + if (value == NULL || *length == 0) + { + clip_free_selection(cbd); /* nothing received, clear register */ + *(int *)success = FALSE; + return; + } + p = (char_u *)value; + len = *length; + if (*type == vim_atom) + { + motion_type = *p++; + len--; + } + + else if (*type == vimenc_atom) + { + char_u *enc; + vimconv_T conv; + int convlen; + + motion_type = *p++; + --len; + + enc = p; + p += STRLEN(p) + 1; + len -= p - enc; + + /* If the encoding of the text is different from 'encoding', attempt + * converting it. */ + conv.vc_type = CONV_NONE; + convert_setup(&conv, enc, p_enc); + if (conv.vc_type != CONV_NONE) + { + convlen = len; /* Need to use an int here. */ + tmpbuf = string_convert(&conv, p, &convlen); + len = convlen; + if (tmpbuf != NULL) + p = tmpbuf; + convert_setup(&conv, NULL, NULL); + } + } + + else if (*type == compound_text_atom + || *type == utf8_atom + || (enc_dbcs != 0 && *type == text_atom)) + { + XTextProperty text_prop; + int n_text = 0; + int status; + + text_prop.value = (unsigned char *)value; + text_prop.encoding = *type; + text_prop.format = *format; + text_prop.nitems = len; +#if defined(X_HAVE_UTF8_STRING) + if (*type == utf8_atom) + status = Xutf8TextPropertyToTextList(X_DISPLAY, &text_prop, + &text_list, &n_text); + else +#endif + status = XmbTextPropertyToTextList(X_DISPLAY, &text_prop, + &text_list, &n_text); + if (status != Success || n_text < 1) + { + *(int *)success = FALSE; + return; + } + p = (char_u *)text_list[0]; + len = STRLEN(p); + } + clip_yank_selection(motion_type, p, (long)len, cbd); + + if (text_list != NULL) + XFreeStringList(text_list); + vim_free(tmpbuf); + XtFree((char *)value); + *(int *)success = TRUE; +} + + void +clip_x11_request_selection( + Widget myShell, + Display *dpy, + VimClipboard *cbd) +{ + XEvent event; + Atom type; + static int success; + int i; + time_t start_time; + int timed_out = FALSE; + + for (i = 0; i < 6; i++) + { + switch (i) + { + case 0: type = vimenc_atom; break; + case 1: type = vim_atom; break; + case 2: type = utf8_atom; break; + case 3: type = compound_text_atom; break; + case 4: type = text_atom; break; + default: type = XA_STRING; + } + if (type == utf8_atom +# if defined(X_HAVE_UTF8_STRING) + && !enc_utf8 +# endif + ) + /* Only request utf-8 when 'encoding' is utf8 and + * Xutf8TextPropertyToTextList is available. */ + continue; + success = MAYBE; + XtGetSelectionValue(myShell, cbd->sel_atom, type, + clip_x11_request_selection_cb, (XtPointer)&success, CurrentTime); + + /* Make sure the request for the selection goes out before waiting for + * a response. */ + XFlush(dpy); + + /* + * Wait for result of selection request, otherwise if we type more + * characters, then they will appear before the one that requested the + * paste! Don't worry, we will catch up with any other events later. + */ + start_time = time(NULL); + while (success == MAYBE) + { + if (XCheckTypedEvent(dpy, PropertyNotify, &event) + || XCheckTypedEvent(dpy, SelectionNotify, &event) + || XCheckTypedEvent(dpy, SelectionRequest, &event)) + { + /* This is where clip_x11_request_selection_cb() should be + * called. It may actually happen a bit later, so we loop + * until "success" changes. + * We may get a SelectionRequest here and if we don't handle + * it we hang. KDE klipper does this, for example. + * We need to handle a PropertyNotify for large selections. */ + XtDispatchEvent(&event); + continue; + } + + /* Time out after 2 to 3 seconds to avoid that we hang when the + * other process doesn't respond. Note that the SelectionNotify + * event may still come later when the selection owner comes back + * to life and the text gets inserted unexpectedly. Don't know + * why that happens or how to avoid that :-(. */ + if (time(NULL) > start_time + 2) + { + timed_out = TRUE; + break; + } + + /* Do we need this? Probably not. */ + XSync(dpy, False); + + /* Wait for 1 msec to avoid that we eat up all CPU time. */ + ui_delay(1L, TRUE); + } + + if (success == TRUE) + return; + + /* don't do a retry with another type after timing out, otherwise we + * hang for 15 seconds. */ + if (timed_out) + break; + } + + /* Final fallback position - use the X CUT_BUFFER0 store */ + yank_cut_buffer0(dpy, cbd); +} + + static Boolean +clip_x11_convert_selection_cb( + Widget w UNUSED, + Atom *sel_atom, + Atom *target, + Atom *type, + XtPointer *value, + long_u *length, + int *format) +{ + static char_u *save_result = NULL; + static long_u save_length = 0; + char_u *string; + int motion_type; + VimClipboard *cbd; + int i; + + if (*sel_atom == clip_plus.sel_atom) + cbd = &clip_plus; + else + cbd = &clip_star; + + if (!cbd->owned) + return False; /* Shouldn't ever happen */ + + /* requestor wants to know what target types we support */ + if (*target == targets_atom) + { + static Atom array[7]; + + *value = (XtPointer)array; + i = 0; + array[i++] = targets_atom; + array[i++] = vimenc_atom; + array[i++] = vim_atom; + if (enc_utf8) + array[i++] = utf8_atom; + array[i++] = XA_STRING; + array[i++] = text_atom; + array[i++] = compound_text_atom; + + *type = XA_ATOM; + /* This used to be: *format = sizeof(Atom) * 8; but that caused + * crashes on 64 bit machines. (Peter Derr) */ + *format = 32; + *length = i; + return True; + } + + if ( *target != XA_STRING + && *target != vimenc_atom + && (*target != utf8_atom || !enc_utf8) + && *target != vim_atom + && *target != text_atom + && *target != compound_text_atom) + return False; + + clip_get_selection(cbd); + motion_type = clip_convert_selection(&string, length, cbd); + if (motion_type < 0) + return False; + + /* For our own format, the first byte contains the motion type */ + if (*target == vim_atom) + (*length)++; + + /* Our own format with encoding: motion 'encoding' NUL text */ + if (*target == vimenc_atom) + *length += STRLEN(p_enc) + 2; + + if (save_length < *length || save_length / 2 >= *length) + *value = XtRealloc((char *)save_result, (Cardinal)*length + 1); + else + *value = save_result; + if (*value == NULL) + { + vim_free(string); + return False; + } + save_result = (char_u *)*value; + save_length = *length; + + if (*target == XA_STRING || (*target == utf8_atom && enc_utf8)) + { + mch_memmove(save_result, string, (size_t)(*length)); + *type = *target; + } + else if (*target == compound_text_atom || *target == text_atom) + { + XTextProperty text_prop; + char *string_nt = (char *)save_result; + int conv_result; + + /* create NUL terminated string which XmbTextListToTextProperty wants */ + mch_memmove(string_nt, string, (size_t)*length); + string_nt[*length] = NUL; + conv_result = XmbTextListToTextProperty(X_DISPLAY, (char **)&string_nt, + 1, XCompoundTextStyle, &text_prop); + if (conv_result != Success) + { + vim_free(string); + return False; + } + *value = (XtPointer)(text_prop.value); /* from plain text */ + *length = text_prop.nitems; + *type = compound_text_atom; + XtFree((char *)save_result); + save_result = (char_u *)*value; + save_length = *length; + } + else if (*target == vimenc_atom) + { + int l = STRLEN(p_enc); + + save_result[0] = motion_type; + STRCPY(save_result + 1, p_enc); + mch_memmove(save_result + l + 2, string, (size_t)(*length - l - 2)); + *type = vimenc_atom; + } + else + { + save_result[0] = motion_type; + mch_memmove(save_result + 1, string, (size_t)(*length - 1)); + *type = vim_atom; + } + *format = 8; /* 8 bits per char */ + vim_free(string); + return True; +} + + static void +clip_x11_lose_ownership_cb(Widget w UNUSED, Atom *sel_atom) +{ + if (*sel_atom == clip_plus.sel_atom) + clip_lose_selection(&clip_plus); + else + clip_lose_selection(&clip_star); +} + + void +clip_x11_lose_selection(Widget myShell, VimClipboard *cbd) +{ + XtDisownSelection(myShell, cbd->sel_atom, + XtLastTimestampProcessed(XtDisplay(myShell))); +} + + static void +clip_x11_notify_cb(Widget w UNUSED, Atom *sel_atom UNUSED, Atom *target UNUSED) +{ + /* To prevent automatically freeing the selection value. */ +} + + int +clip_x11_own_selection(Widget myShell, VimClipboard *cbd) +{ + /* When using the GUI we have proper timestamps, use the one of the last + * event. When in the console we don't get events (the terminal gets + * them), Get the time by a zero-length append, clip_x11_timestamp_cb will + * be called with the current timestamp. */ +#ifdef FEAT_GUI + if (gui.in_use) + { + if (XtOwnSelection(myShell, cbd->sel_atom, + XtLastTimestampProcessed(XtDisplay(myShell)), + clip_x11_convert_selection_cb, clip_x11_lose_ownership_cb, + clip_x11_notify_cb) == False) + return FAIL; + } + else +#endif + { + if (!XChangeProperty(XtDisplay(myShell), XtWindow(myShell), + cbd->sel_atom, timestamp_atom, 32, PropModeAppend, NULL, 0)) + return FAIL; + } + /* Flush is required in a terminal as nothing else is doing it. */ + XFlush(XtDisplay(myShell)); + return OK; +} + +/* + * Send the current selection to the clipboard. Do nothing for X because we + * will fill in the selection only when requested by another app. + */ + void +clip_x11_set_selection(VimClipboard *cbd UNUSED) +{ +} + +#if (defined(FEAT_X11) && defined(FEAT_XCLIPBOARD) && defined(USE_SYSTEM)) \ + || defined(PROTO) + int +clip_x11_owner_exists(VimClipboard *cbd) +{ + return XGetSelectionOwner(X_DISPLAY, cbd->sel_atom) != None; +} +#endif +#endif + +#if defined(FEAT_XCLIPBOARD) || defined(FEAT_GUI_X11) \ + || defined(FEAT_GUI_GTK) || defined(PROTO) +/* + * Get the contents of the X CUT_BUFFER0 and put it in "cbd". + */ + void +yank_cut_buffer0(Display *dpy, VimClipboard *cbd) +{ + int nbytes = 0; + char_u *buffer = (char_u *)XFetchBuffer(dpy, &nbytes, 0); + + if (nbytes > 0) + { + int done = FALSE; + + /* CUT_BUFFER0 is supposed to be always latin1. Convert to 'enc' when + * using a multi-byte encoding. Conversion between two 8-bit + * character sets usually fails and the text might actually be in + * 'enc' anyway. */ + if (has_mbyte) + { + char_u *conv_buf; + vimconv_T vc; + + vc.vc_type = CONV_NONE; + if (convert_setup(&vc, (char_u *)"latin1", p_enc) == OK) + { + conv_buf = string_convert(&vc, buffer, &nbytes); + if (conv_buf != NULL) + { + clip_yank_selection(MCHAR, conv_buf, (long)nbytes, cbd); + vim_free(conv_buf); + done = TRUE; + } + convert_setup(&vc, NULL, NULL); + } + } + if (!done) /* use the text without conversion */ + clip_yank_selection(MCHAR, buffer, (long)nbytes, cbd); + XFree((void *)buffer); + if (p_verbose > 0) + { + verbose_enter(); + verb_msg(_("Used CUT_BUFFER0 instead of empty selection")); + verbose_leave(); + } + } +} +#endif + +#if defined(FEAT_MOUSE) || defined(PROTO) + +/* + * Move the cursor to the specified row and column on the screen. + * Change current window if necessary. Returns an integer with the + * CURSOR_MOVED bit set if the cursor has moved or unset otherwise. + * + * The MOUSE_FOLD_CLOSE bit is set when clicked on the '-' in a fold column. + * The MOUSE_FOLD_OPEN bit is set when clicked on the '+' in a fold column. + * + * If flags has MOUSE_FOCUS, then the current window will not be changed, and + * if the mouse is outside the window then the text will scroll, or if the + * mouse was previously on a status line, then the status line may be dragged. + * + * If flags has MOUSE_MAY_VIS, then VIsual mode will be started before the + * cursor is moved unless the cursor was on a status line. + * This function returns one of IN_UNKNOWN, IN_BUFFER, IN_STATUS_LINE or + * IN_SEP_LINE depending on where the cursor was clicked. + * + * If flags has MOUSE_MAY_STOP_VIS, then Visual mode will be stopped, unless + * the mouse is on the status line of the same window. + * + * If flags has MOUSE_DID_MOVE, nothing is done if the mouse didn't move since + * the last call. + * + * If flags has MOUSE_SETPOS, nothing is done, only the current position is + * remembered. + */ + int +jump_to_mouse( + int flags, + int *inclusive, /* used for inclusive operator, can be NULL */ + int which_button) /* MOUSE_LEFT, MOUSE_RIGHT, MOUSE_MIDDLE */ +{ + static int on_status_line = 0; /* #lines below bottom of window */ + static int on_sep_line = 0; /* on separator right of window */ +#ifdef FEAT_MENU + static int in_winbar = FALSE; +#endif + static int prev_row = -1; + static int prev_col = -1; + static win_T *dragwin = NULL; /* window being dragged */ + static int did_drag = FALSE; /* drag was noticed */ + + win_T *wp, *old_curwin; + pos_T old_cursor; + int count; + int first; + int row = mouse_row; + int col = mouse_col; +#ifdef FEAT_FOLDING + int mouse_char; +#endif + + mouse_past_bottom = FALSE; + mouse_past_eol = FALSE; + + if (flags & MOUSE_RELEASED) + { + /* On button release we may change window focus if positioned on a + * status line and no dragging happened. */ + if (dragwin != NULL && !did_drag) + flags &= ~(MOUSE_FOCUS | MOUSE_DID_MOVE); + dragwin = NULL; + did_drag = FALSE; + } + + if ((flags & MOUSE_DID_MOVE) + && prev_row == mouse_row + && prev_col == mouse_col) + { +retnomove: + /* before moving the cursor for a left click which is NOT in a status + * line, stop Visual mode */ + if (on_status_line) + return IN_STATUS_LINE; + if (on_sep_line) + return IN_SEP_LINE; +#ifdef FEAT_MENU + if (in_winbar) + { + /* A quick second click may arrive as a double-click, but we use it + * as a second click in the WinBar. */ + if ((mod_mask & MOD_MASK_MULTI_CLICK) && !(flags & MOUSE_RELEASED)) + { + wp = mouse_find_win(&row, &col); + if (wp == NULL) + return IN_UNKNOWN; + winbar_click(wp, col); + } + return IN_OTHER_WIN | MOUSE_WINBAR; + } +#endif + if (flags & MOUSE_MAY_STOP_VIS) + { + end_visual_mode(); + redraw_curbuf_later(INVERTED); /* delete the inversion */ + } +#if defined(FEAT_CMDWIN) && defined(FEAT_CLIPBOARD) + /* Continue a modeless selection in another window. */ + if (cmdwin_type != 0 && row < curwin->w_winrow) + return IN_OTHER_WIN; +#endif + return IN_BUFFER; + } + + prev_row = mouse_row; + prev_col = mouse_col; + + if (flags & MOUSE_SETPOS) + goto retnomove; /* ugly goto... */ + +#ifdef FEAT_FOLDING + /* Remember the character under the mouse, it might be a '-' or '+' in the + * fold column. */ + if (row >= 0 && row < Rows && col >= 0 && col <= Columns + && ScreenLines != NULL) + mouse_char = ScreenLines[LineOffset[row] + col]; + else + mouse_char = ' '; +#endif + + old_curwin = curwin; + old_cursor = curwin->w_cursor; + + if (!(flags & MOUSE_FOCUS)) + { + if (row < 0 || col < 0) /* check if it makes sense */ + return IN_UNKNOWN; + + /* find the window where the row is in */ + wp = mouse_find_win(&row, &col); + if (wp == NULL) + return IN_UNKNOWN; + dragwin = NULL; + +#ifdef FEAT_MENU + if (row == -1) + { + /* A click in the window toolbar does not enter another window or + * change Visual highlighting. */ + winbar_click(wp, col); + in_winbar = TRUE; + return IN_OTHER_WIN | MOUSE_WINBAR; + } + in_winbar = FALSE; +#endif + + /* + * winpos and height may change in win_enter()! + */ + if (row >= wp->w_height) /* In (or below) status line */ + { + on_status_line = row - wp->w_height + 1; + dragwin = wp; + } + else + on_status_line = 0; + if (col >= wp->w_width) /* In separator line */ + { + on_sep_line = col - wp->w_width + 1; + dragwin = wp; + } + else + on_sep_line = 0; + + /* The rightmost character of the status line might be a vertical + * separator character if there is no connecting window to the right. */ + if (on_status_line && on_sep_line) + { + if (stl_connected(wp)) + on_sep_line = 0; + else + on_status_line = 0; + } + + /* Before jumping to another buffer, or moving the cursor for a left + * click, stop Visual mode. */ + if (VIsual_active + && (wp->w_buffer != curwin->w_buffer + || (!on_status_line && !on_sep_line +#ifdef FEAT_FOLDING + && ( +# ifdef FEAT_RIGHTLEFT + wp->w_p_rl ? col < wp->w_width - wp->w_p_fdc : +# endif + col >= wp->w_p_fdc +# ifdef FEAT_CMDWIN + + (cmdwin_type == 0 && wp == curwin ? 0 : 1) +# endif + ) +#endif + && (flags & MOUSE_MAY_STOP_VIS)))) + { + end_visual_mode(); + redraw_curbuf_later(INVERTED); /* delete the inversion */ + } +#ifdef FEAT_CMDWIN + if (cmdwin_type != 0 && wp != curwin) + { + /* A click outside the command-line window: Use modeless + * selection if possible. Allow dragging the status lines. */ + on_sep_line = 0; +# ifdef FEAT_CLIPBOARD + if (on_status_line) + return IN_STATUS_LINE; + return IN_OTHER_WIN; +# else + row = 0; + col += wp->w_wincol; + wp = curwin; +# endif + } +#endif + /* Only change window focus when not clicking on or dragging the + * status line. Do change focus when releasing the mouse button + * (MOUSE_FOCUS was set above if we dragged first). */ + if (dragwin == NULL || (flags & MOUSE_RELEASED)) + win_enter(wp, TRUE); /* can make wp invalid! */ + + if (curwin != old_curwin) + { +#ifdef CHECK_DOUBLE_CLICK + /* set topline, to be able to check for double click ourselves */ + set_mouse_topline(curwin); +#endif +#ifdef FEAT_TERMINAL + /* when entering a terminal window may change state */ + term_win_entered(); +#endif + } + if (on_status_line) /* In (or below) status line */ + { + /* Don't use start_arrow() if we're in the same window */ + if (curwin == old_curwin) + return IN_STATUS_LINE; + else + return IN_STATUS_LINE | CURSOR_MOVED; + } + if (on_sep_line) /* In (or below) status line */ + { + /* Don't use start_arrow() if we're in the same window */ + if (curwin == old_curwin) + return IN_SEP_LINE; + else + return IN_SEP_LINE | CURSOR_MOVED; + } + + curwin->w_cursor.lnum = curwin->w_topline; +#ifdef FEAT_GUI + /* remember topline, needed for double click */ + gui_prev_topline = curwin->w_topline; +# ifdef FEAT_DIFF + gui_prev_topfill = curwin->w_topfill; +# endif +#endif + } + else if (on_status_line && which_button == MOUSE_LEFT) + { + if (dragwin != NULL) + { + /* Drag the status line */ + count = row - dragwin->w_winrow - dragwin->w_height + 1 + - on_status_line; + win_drag_status_line(dragwin, count); + did_drag |= count; + } + return IN_STATUS_LINE; /* Cursor didn't move */ + } + else if (on_sep_line && which_button == MOUSE_LEFT) + { + if (dragwin != NULL) + { + /* Drag the separator column */ + count = col - dragwin->w_wincol - dragwin->w_width + 1 + - on_sep_line; + win_drag_vsep_line(dragwin, count); + did_drag |= count; + } + return IN_SEP_LINE; /* Cursor didn't move */ + } +#ifdef FEAT_MENU + else if (in_winbar) + { + /* After a click on the window toolbar don't start Visual mode. */ + return IN_OTHER_WIN | MOUSE_WINBAR; + } +#endif + else /* keep_window_focus must be TRUE */ + { + /* before moving the cursor for a left click, stop Visual mode */ + if (flags & MOUSE_MAY_STOP_VIS) + { + end_visual_mode(); + redraw_curbuf_later(INVERTED); /* delete the inversion */ + } + +#if defined(FEAT_CMDWIN) && defined(FEAT_CLIPBOARD) + /* Continue a modeless selection in another window. */ + if (cmdwin_type != 0 && row < curwin->w_winrow) + return IN_OTHER_WIN; +#endif + + row -= W_WINROW(curwin); + col -= curwin->w_wincol; + + /* + * When clicking beyond the end of the window, scroll the screen. + * Scroll by however many rows outside the window we are. + */ + if (row < 0) + { + count = 0; + for (first = TRUE; curwin->w_topline > 1; ) + { +#ifdef FEAT_DIFF + if (curwin->w_topfill < diff_check(curwin, curwin->w_topline)) + ++count; + else +#endif + count += plines(curwin->w_topline - 1); + if (!first && count > -row) + break; + first = FALSE; +#ifdef FEAT_FOLDING + (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); +#endif +#ifdef FEAT_DIFF + if (curwin->w_topfill < diff_check(curwin, curwin->w_topline)) + ++curwin->w_topfill; + else +#endif + { + --curwin->w_topline; +#ifdef FEAT_DIFF + curwin->w_topfill = 0; +#endif + } + } +#ifdef FEAT_DIFF + check_topfill(curwin, FALSE); +#endif + curwin->w_valid &= + ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); + redraw_later(VALID); + row = 0; + } + else if (row >= curwin->w_height) + { + count = 0; + for (first = TRUE; curwin->w_topline < curbuf->b_ml.ml_line_count; ) + { +#ifdef FEAT_DIFF + if (curwin->w_topfill > 0) + ++count; + else +#endif + count += plines(curwin->w_topline); + if (!first && count > row - curwin->w_height + 1) + break; + first = FALSE; +#ifdef FEAT_FOLDING + if (hasFolding(curwin->w_topline, NULL, &curwin->w_topline) + && curwin->w_topline == curbuf->b_ml.ml_line_count) + break; +#endif +#ifdef FEAT_DIFF + if (curwin->w_topfill > 0) + --curwin->w_topfill; + else +#endif + { + ++curwin->w_topline; +#ifdef FEAT_DIFF + curwin->w_topfill = + diff_check_fill(curwin, curwin->w_topline); +#endif + } + } +#ifdef FEAT_DIFF + check_topfill(curwin, FALSE); +#endif + redraw_later(VALID); + curwin->w_valid &= + ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); + row = curwin->w_height - 1; + } + else if (row == 0) + { + /* When dragging the mouse, while the text has been scrolled up as + * far as it goes, moving the mouse in the top line should scroll + * the text down (done later when recomputing w_topline). */ + if (mouse_dragging > 0 + && curwin->w_cursor.lnum + == curwin->w_buffer->b_ml.ml_line_count + && curwin->w_cursor.lnum == curwin->w_topline) + curwin->w_valid &= ~(VALID_TOPLINE); + } + } + +#ifdef FEAT_FOLDING + /* Check for position outside of the fold column. */ + if ( +# ifdef FEAT_RIGHTLEFT + curwin->w_p_rl ? col < curwin->w_width - curwin->w_p_fdc : +# endif + col >= curwin->w_p_fdc +# ifdef FEAT_CMDWIN + + (cmdwin_type == 0 ? 0 : 1) +# endif + ) + mouse_char = ' '; +#endif + + /* compute the position in the buffer line from the posn on the screen */ + if (mouse_comp_pos(curwin, &row, &col, &curwin->w_cursor.lnum)) + mouse_past_bottom = TRUE; + + /* Start Visual mode before coladvance(), for when 'sel' != "old" */ + if ((flags & MOUSE_MAY_VIS) && !VIsual_active) + { + check_visual_highlight(); + VIsual = old_cursor; + VIsual_active = TRUE; + VIsual_reselect = TRUE; + /* if 'selectmode' contains "mouse", start Select mode */ + may_start_select('o'); + setmouse(); + if (p_smd && msg_silent == 0) + redraw_cmdline = TRUE; /* show visual mode later */ + } + + curwin->w_curswant = col; + curwin->w_set_curswant = FALSE; /* May still have been TRUE */ + if (coladvance(col) == FAIL) /* Mouse click beyond end of line */ + { + if (inclusive != NULL) + *inclusive = TRUE; + mouse_past_eol = TRUE; + } + else if (inclusive != NULL) + *inclusive = FALSE; + + count = IN_BUFFER; + if (curwin != old_curwin || curwin->w_cursor.lnum != old_cursor.lnum + || curwin->w_cursor.col != old_cursor.col) + count |= CURSOR_MOVED; /* Cursor has moved */ + +#ifdef FEAT_FOLDING + if (mouse_char == '+') + count |= MOUSE_FOLD_OPEN; + else if (mouse_char != ' ') + count |= MOUSE_FOLD_CLOSE; +#endif + + return count; +} + +/* + * Compute the position in the buffer line from the posn on the screen in + * window "win". + * Returns TRUE if the position is below the last line. + */ + int +mouse_comp_pos( + win_T *win, + int *rowp, + int *colp, + linenr_T *lnump) +{ + int col = *colp; + int row = *rowp; + linenr_T lnum; + int retval = FALSE; + int off; + int count; + +#ifdef FEAT_RIGHTLEFT + if (win->w_p_rl) + col = win->w_width - 1 - col; +#endif + + lnum = win->w_topline; + + while (row > 0) + { +#ifdef FEAT_DIFF + /* Don't include filler lines in "count" */ + if (win->w_p_diff +# ifdef FEAT_FOLDING + && !hasFoldingWin(win, lnum, NULL, NULL, TRUE, NULL) +# endif + ) + { + if (lnum == win->w_topline) + row -= win->w_topfill; + else + row -= diff_check_fill(win, lnum); + count = plines_win_nofill(win, lnum, TRUE); + } + else +#endif + count = plines_win(win, lnum, TRUE); + if (count > row) + break; /* Position is in this buffer line. */ +#ifdef FEAT_FOLDING + (void)hasFoldingWin(win, lnum, NULL, &lnum, TRUE, NULL); +#endif + if (lnum == win->w_buffer->b_ml.ml_line_count) + { + retval = TRUE; + break; /* past end of file */ + } + row -= count; + ++lnum; + } + + if (!retval) + { + /* Compute the column without wrapping. */ + off = win_col_off(win) - win_col_off2(win); + if (col < off) + col = off; + col += row * (win->w_width - off); + /* add skip column (for long wrapping line) */ + col += win->w_skipcol; + } + + if (!win->w_p_wrap) + col += win->w_leftcol; + + /* skip line number and fold column in front of the line */ + col -= win_col_off(win); + if (col < 0) + { +#ifdef FEAT_NETBEANS_INTG + netbeans_gutter_click(lnum); +#endif + col = 0; + } + + *colp = col; + *rowp = row; + *lnump = lnum; + return retval; +} + +/* + * Find the window at screen position "*rowp" and "*colp". The positions are + * updated to become relative to the top-left of the window. + * Returns NULL when something is wrong. + */ + win_T * +mouse_find_win(int *rowp, int *colp UNUSED) +{ + frame_T *fp; + win_T *wp; + + fp = topframe; + *rowp -= firstwin->w_winrow; + for (;;) + { + if (fp->fr_layout == FR_LEAF) + break; + if (fp->fr_layout == FR_ROW) + { + for (fp = fp->fr_child; fp->fr_next != NULL; fp = fp->fr_next) + { + if (*colp < fp->fr_width) + break; + *colp -= fp->fr_width; + } + } + else /* fr_layout == FR_COL */ + { + for (fp = fp->fr_child; fp->fr_next != NULL; fp = fp->fr_next) + { + if (*rowp < fp->fr_height) + break; + *rowp -= fp->fr_height; + } + } + } + /* When using a timer that closes a window the window might not actually + * exist. */ + FOR_ALL_WINDOWS(wp) + if (wp == fp->fr_win) + { +#ifdef FEAT_MENU + *rowp -= wp->w_winbar_height; +#endif + return wp; + } + return NULL; +} + +#if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_GTK) || defined(FEAT_GUI_MAC) \ + || defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MSWIN) \ + || defined(FEAT_GUI_PHOTON) || defined(FEAT_TERM_POPUP_MENU) \ + || defined(PROTO) +/* + * Translate window coordinates to buffer position without any side effects + */ + int +get_fpos_of_mouse(pos_T *mpos) +{ + win_T *wp; + int row = mouse_row; + int col = mouse_col; + + if (row < 0 || col < 0) /* check if it makes sense */ + return IN_UNKNOWN; + + /* find the window where the row is in */ + wp = mouse_find_win(&row, &col); + if (wp == NULL) + return IN_UNKNOWN; + /* + * winpos and height may change in win_enter()! + */ + if (row >= wp->w_height) /* In (or below) status line */ + return IN_STATUS_LINE; + if (col >= wp->w_width) /* In vertical separator line */ + return IN_SEP_LINE; + + if (wp != curwin) + return IN_UNKNOWN; + + /* compute the position in the buffer line from the posn on the screen */ + if (mouse_comp_pos(curwin, &row, &col, &mpos->lnum)) + return IN_STATUS_LINE; /* past bottom */ + + mpos->col = vcol2col(wp, mpos->lnum, col); + + if (mpos->col > 0) + --mpos->col; + mpos->coladd = 0; + return IN_BUFFER; +} +#endif + +#if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_GTK) || defined(FEAT_GUI_MAC) \ + || defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MSWIN) \ + || defined(FEAT_GUI_PHOTON) || defined(FEAT_BEVAL) \ + || defined(FEAT_TERM_POPUP_MENU) || defined(PROTO) +/* + * Convert a virtual (screen) column to a character column. + * The first column is one. + */ + int +vcol2col(win_T *wp, linenr_T lnum, int vcol) +{ + /* try to advance to the specified column */ + int count = 0; + char_u *ptr; + char_u *line; + + line = ptr = ml_get_buf(wp->w_buffer, lnum, FALSE); + while (count < vcol && *ptr != NUL) + { + count += win_lbr_chartabsize(wp, line, ptr, count, NULL); + MB_PTR_ADV(ptr); + } + return (int)(ptr - line); +} +#endif + +#endif /* FEAT_MOUSE */ + +#if defined(FEAT_GUI) || defined(WIN3264) || defined(PROTO) +/* + * Called when focus changed. Used for the GUI or for systems where this can + * be done in the console (Win32). + */ + void +ui_focus_change( + int in_focus) /* TRUE if focus gained. */ +{ + static time_t last_time = (time_t)0; + int need_redraw = FALSE; + + /* When activated: Check if any file was modified outside of Vim. + * Only do this when not done within the last two seconds (could get + * several events in a row). */ + if (in_focus && last_time + 2 < time(NULL)) + { + need_redraw = check_timestamps( +# ifdef FEAT_GUI + gui.in_use +# else + FALSE +# endif + ); + last_time = time(NULL); + } + + /* + * Fire the focus gained/lost autocommand. + */ + need_redraw |= apply_autocmds(in_focus ? EVENT_FOCUSGAINED + : EVENT_FOCUSLOST, NULL, NULL, FALSE, curbuf); + + if (need_redraw) + { + /* Something was executed, make sure the cursor is put back where it + * belongs. */ + need_wait_return = FALSE; + + if (State & CMDLINE) + redrawcmdline(); + else if (State == HITRETURN || State == SETWSIZE || State == ASKMORE + || State == EXTERNCMD || State == CONFIRM || exmode_active) + repeat_message(); + else if ((State & NORMAL) || (State & INSERT)) + { + if (must_redraw != 0) + update_screen(0); + setcursor(); + } + cursor_on(); /* redrawing may have switched it off */ + out_flush_cursor(FALSE, TRUE); +# ifdef FEAT_GUI + if (gui.in_use) + gui_update_scrollbars(FALSE); +# endif + } +#ifdef FEAT_TITLE + /* File may have been changed from 'readonly' to 'noreadonly' */ + if (need_maketitle) + maketitle(); +#endif +} +#endif + +#if defined(HAVE_INPUT_METHOD) || defined(PROTO) +/* + * Save current Input Method status to specified place. + */ + void +im_save_status(long *psave) +{ + /* Don't save when 'imdisable' is set or "xic" is NULL, IM is always + * disabled then (but might start later). + * Also don't save when inside a mapping, vgetc_im_active has not been set + * then. + * And don't save when the keys were stuffed (e.g., for a "." command). + * And don't save when the GUI is running but our window doesn't have + * input focus (e.g., when a find dialog is open). */ + if (!p_imdisable && KeyTyped && !KeyStuffed +# ifdef FEAT_XIM + && xic != NULL +# endif +# ifdef FEAT_GUI + && (!gui.in_use || gui.in_focus) +# endif + ) + { + /* Do save when IM is on, or IM is off and saved status is on. */ + if (vgetc_im_active) + *psave = B_IMODE_IM; + else if (*psave == B_IMODE_IM) + *psave = B_IMODE_NONE; + } +} +#endif |