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Diffstat (limited to 'src/nvim/ui.c')
| -rw-r--r-- | src/nvim/ui.c | 963 |
1 files changed, 963 insertions, 0 deletions
diff --git a/src/nvim/ui.c b/src/nvim/ui.c new file mode 100644 index 0000000000..4678416200 --- /dev/null +++ b/src/nvim/ui.c @@ -0,0 +1,963 @@ +/* + * 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 <string.h> + +#include "vim.h" +#include "ui.h" +#include "diff.h" +#include "ex_cmds2.h" +#include "fold.h" +#include "main.h" +#include "mbyte.h" +#include "misc1.h" +#include "misc2.h" +#include "garray.h" +#include "memory.h" +#include "move.h" +#include "normal.h" +#include "option.h" +#include "os_unix.h" +#include "os/time.h" +#include "os/input.h" +#include "os/signal.h" +#include "screen.h" +#include "term.h" +#include "window.h" + +void ui_write(char_u *s, int len) +{ +#ifndef NO_CONSOLE + /* Don't output anything in silent mode ("ex -s") unless 'verbose' set */ + if (!(silent_mode && p_verbose == 0)) { + 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; + } + + mch_write(s, len); + + if (output_conv.vc_type != CONV_NONE) + free(tofree); + } +#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 (do_profiling == PROF_YES && wtime != 0) + prof_inchar_enter(); + +#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 = os_inchar(buf, maxlen, (wtime >= 0 && wtime < 10) + ? 10L : wtime, tb_change_cnt); + if (retval > 0 || typebuf_changed(tb_change_cnt) || wtime >= 0) + goto theend; +# endif + if (wtime == -1 && ++count == 1000) + read_error_exit(); + buf[0] = CAR; + retval = 1; + goto theend; + } +#endif + + /* If we are going to wait for some time or block... */ + if (wtime == -1 || wtime > 100L) { + /* ... allow signals to kill us. */ + signal_accept_deadly(); + + /* ... there is no need for CTRL-C to interrupt something, don't let + * it set got_int when it was mapped. */ + if (mapped_ctrl_c) + ctrl_c_interrupts = FALSE; + } + +#ifndef NO_CONSOLE + { + retval = os_inchar(buf, maxlen, wtime, tb_change_cnt); + } +#endif + + if (wtime == -1 || wtime > 100L) + /* block SIGHUP et al. */ + signal_reject_deadly(); + + ctrl_c_interrupts = TRUE; + +#ifdef NO_CONSOLE_INPUT +theend: +#endif + if (do_profiling == PROF_YES && wtime != 0) + prof_inchar_exit(); + return retval; +} + +/* + * return non-zero if a character is available + */ +int ui_char_avail(void) +{ +#ifndef NO_CONSOLE +# ifdef NO_CONSOLE_INPUT + if (no_console_input()) + return 0; +# endif + return os_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) +{ + os_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) +{ + mch_suspend(); +} + +/* + * 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; + + 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) +{ + mch_set_shellsize(); +} + +void ui_breakcheck(void) +{ + os_breakcheck(); +} + +/***************************************************************************** + * Functions for copying and pasting text between applications. + * This is always included in a GUI version, but may also be included when the + * clipboard and mouse is available to a terminal version such as xterm. + * Note: there are some more functions in ops.c that handle selection stuff. + * + * Also note that the majority of functions here deal with the X 'primary' + * (visible - for Visual mode use) selection, and only that. There are no + * versions of these for the 'clipboard' selection, as Visual mode has no use + * for them. + */ + + +/***************************************************************************** + * 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. + */ +# define INBUFLEN 4096 + +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; +} + +/* + * 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)); + /* Add one to avoid a zero size. */ + gap->ga_data = alloc((unsigned)inbufcount + 1); + if (gap->ga_data != NULL) + 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) { + memmove(inbuf, gap->ga_data, gap->ga_len); + inbufcount = gap->ga_len; + free(gap->ga_data); + } + free(gap); + } +} + +#if defined(FEAT_GUI) \ + || defined(FEAT_MOUSE_GPM) || defined(FEAT_SYSMOUSE) \ + || defined(FEAT_XCLIPBOARD) || defined(PROTO) +/* + * 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! */ + + if ((State & (INSERT|CMDLINE)) && hangul_input_state_get()) + if ((len = hangul_input_process(s, len)) == 0) + return; + + while (len--) + inbuf[inbufcount++] = *s++; +} +#endif + +#if ((defined(FEAT_XIM) || defined(FEAT_DND)) && defined(FEAT_GUI_GTK)) \ + || defined(FEAT_GUI_MSWIN) \ + || defined(FEAT_GUI_MAC) \ + || (defined(FEAT_MBYTE) && defined(FEAT_MBYTE_IME)) \ + || (defined(FEAT_GUI) && (!defined(USE_ON_FLY_SCROLL) \ + || defined(FEAT_MENU))) \ + || defined(PROTO) +/* + * 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); + } + } +} + +#endif + +#if defined(FEAT_GUI) || defined(FEAT_EVAL) || defined(FEAT_EX_EXTRA) \ + || defined(PROTO) +/* Remove everything from the input buffer. Called when ^C is found */ +void trash_input_buf(void) +{ + inbufcount = 0; +} + +#endif + +/* + * Read as much data from the input buffer as possible up to maxlen, and store + * it in buf. + * Note: this function used to be Read() in unix.c + */ +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; + memmove(buf, inbuf, (size_t)maxlen); + inbufcount -= maxlen; + if (inbufcount) + memmove(inbuf, inbuf + maxlen, (size_t)inbufcount); + return (int)maxlen; +} + +void fill_input_buf(int exit_on_error) +{ +#if defined(UNIX) || defined(MACOS_X_UNIX) + int len; + int try; + static char_u *rest = NULL; /* unconverted rest of previous read */ + static int restlen = 0; + int unconverted; +#endif + +#if defined(UNIX) || defined(MACOS_X_UNIX) + 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. + */ + + + 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; + memmove(inbuf + inbufcount, rest, unconverted); + if (unconverted == restlen) { + free(rest); + rest = NULL; + } else { + restlen -= unconverted; + memmove(rest, rest + unconverted, restlen); + } + inbufcount += unconverted; + } else + unconverted = 0; + + len = 0; /* to avoid gcc warning */ + for (try = 0; try < 100; ++try) { + len = input_read( + (char *)inbuf + inbufcount, + (size_t)((INBUFLEN - inbufcount) / input_conv.vc_factor)); + + if (len > 0 || got_int) + break; + + if (!exit_on_error) + return; + } + + if (len <= 0 && !got_int) + read_error_exit(); + + 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 */ + memmove(inbuf, inbuf + inbufcount, (size_t)(len + 1)); + inbufcount = 0; + got_int = TRUE; + } + ++inbufcount; + } + } +#endif /* UNIX */ +} +#endif /* defined(UNIX) || defined(FEAT_GUI) */ + +/* + * 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(); +} + +/* + * May update the shape of the cursor. + */ +void ui_cursor_shape(void) +{ + term_cursor_shape(); + + + conceal_check_cursur_line(); +} + +#if defined(FEAT_GUI) || defined(FEAT_RIGHTLEFT) \ + || defined(FEAT_MBYTE) || defined(PROTO) +/* + * 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; +} +#endif + +/* + * Stuff for the X clipboard. Shared between VMS and Unix. + */ + +/* + * 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 */ + 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; + int mouse_char; + + 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; + if (flags & MOUSE_MAY_STOP_VIS) { + end_visual_mode(); + redraw_curbuf_later(INVERTED); /* delete the inversion */ + } + return IN_BUFFER; + } + + prev_row = mouse_row; + prev_col = mouse_col; + + if (flags & MOUSE_SETPOS) + goto retnomove; /* ugly goto... */ + + /* 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 = ' '; + + 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); + dragwin = NULL; + /* + * 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 + && ( + wp->w_p_rl ? col < W_WIDTH(wp) - wp->w_p_fdc : + col >= wp->w_p_fdc + + (cmdwin_type == 0 && wp == + curwin ? 0 : 1) + ) + && (flags & MOUSE_MAY_STOP_VIS)))) { + end_visual_mode(); + redraw_curbuf_later(INVERTED); /* delete the inversion */ + } + 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; + row = 0; + col += wp->w_wincol; + wp = curwin; + } + /* 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! */ +# ifdef CHECK_DOUBLE_CLICK + /* set topline, to be able to check for double click ourselves */ + if (curwin != old_curwin) + set_mouse_topline(curwin); +# 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; + } 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 */ + } 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 */ + } + + + row -= W_WINROW(curwin); + col -= W_WINCOL(curwin); + + /* + * 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; ) { + if (curwin->w_topfill < diff_check(curwin, curwin->w_topline)) + ++count; + else + count += plines(curwin->w_topline - 1); + if (!first && count > -row) + break; + first = FALSE; + hasFolding(curwin->w_topline, &curwin->w_topline, NULL); + if (curwin->w_topfill < diff_check(curwin, curwin->w_topline)) + ++curwin->w_topfill; + else { + --curwin->w_topline; + curwin->w_topfill = 0; + } + } + check_topfill(curwin, FALSE); + 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; ) { + if (curwin->w_topfill > 0) + ++count; + else + count += plines(curwin->w_topline); + if (!first && count > row - curwin->w_height + 1) + break; + first = FALSE; + if (hasFolding(curwin->w_topline, NULL, &curwin->w_topline) + && curwin->w_topline == curbuf->b_ml.ml_line_count) + break; + if (curwin->w_topfill > 0) + --curwin->w_topfill; + else { + ++curwin->w_topline; + curwin->w_topfill = + diff_check_fill(curwin, curwin->w_topline); + } + } + check_topfill(curwin, FALSE); + 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); + } + } + + /* Check for position outside of the fold column. */ + if ( + curwin->w_p_rl ? col < W_WIDTH(curwin) - curwin->w_p_fdc : + col >= curwin->w_p_fdc + + (cmdwin_type == 0 ? 0 : 1) + ) + mouse_char = ' '; + + /* 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 */ + + if (mouse_char == '+') + count |= MOUSE_FOLD_OPEN; + else if (mouse_char != ' ') + count |= MOUSE_FOLD_CLOSE; + + 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; + + if (win->w_p_rl) + col = W_WIDTH(win) - 1 - col; + + lnum = win->w_topline; + + while (row > 0) { + /* Don't include filler lines in "count" */ + if (win->w_p_diff + && !hasFoldingWin(win, lnum, NULL, NULL, TRUE, NULL) + ) { + if (lnum == win->w_topline) + row -= win->w_topfill; + else + row -= diff_check_fill(win, lnum); + count = plines_win_nofill(win, lnum, TRUE); + } else + count = plines_win(win, lnum, TRUE); + if (count > row) + break; /* Position is in this buffer line. */ + (void)hasFoldingWin(win, lnum, NULL, &lnum, TRUE, NULL); + 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 * (W_WIDTH(win) - 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) { + 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. + */ +win_T *mouse_find_win(int *rowp, int *colp) +{ + frame_T *fp; + + 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; + } + } + } + return fp->fr_win; +} + +#if defined(USE_IM_CONTROL) || 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 + ) { + /* 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 |