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- /******************* start of original comments ********************/
- /*
- * Written by Douglas Thomson (1989/1990)
- *
- * This source code is released into the public domain.
- */
-
- /*
- * Name: dte - Doug's Text Editor program - window module
- * Purpose: This file contains the code associated with opening and sizing
- * windows, and also displaying the help window.
- * File: window.c
- * Author: Douglas Thomson
- * System: this file is intended to be system-independent
- * Date: October 12, 1989
- */
- /********************* end of original comments ********************/
-
-
- /*
- * The window routines have been EXTENSIVELY rewritten. Some routines were
- * changed so only one logical function is carried out, eg. 'initialize_window'.
- * I like the Microsoft way of resizing windows - just press the up and down
- * arrows to adjust the window to desired size. I also like pressing one key
- * to change windows. All of which are implemented in TDE.
- *
- * In TDE, version 1.4, I added support for vertical windows.
- *
- * New editor name: TDE, the Thomson-Davis Editor.
- * Author: Frank Davis
- * Date: June 5, 1991, version 1.0
- * Date: July 29, 1991, version 1.1
- * Date: October 5, 1991, version 1.2
- * Date: January 20, 1992, version 1.3
- * Date: February 17, 1992, version 1.4
- * Date: April 1, 1992, version 1.5
- * Date: June 5, 1992, version 2.0
- * Date: October 31, 1992, version 2.1
- * Date: April 1, 1993, version 2.2
- * Date: June 5, 1993, version 3.0
- * Date: August 29, 1993, version 3.1
- * Date: November 13, 1993, version 3.2
- *
- * This modification of Douglas Thomson's code is released into the
- * public domain, Frank Davis. You may distribute it freely.
- */
-
- #include "tdestr.h"
- #include "common.h"
- #include "define.h"
- #include "tdefunc.h"
-
-
- /*
- * Name: initialize_window
- * Purpose: To open a new window
- * Date: June 5, 1991
- * Modified: November 13, 1993, Frank Davis per Byrial Jensen
- * Returns: OK if window opened successfully
- * ERROR if anything went wrong
- * Notes: If this is first window, then set up as normal displayed window;
- * otherwise, make the present window invisible and open a new
- * window in the same screen location as the old one.
- *
- * Change: Use of new function get_next_letter( )
- */
- int initialize_window( void )
- {
- int top;
- int bottom;
- int start_col;
- int end_col;
- TDE_WIN *wp; /* used for scanning windows */
- TDE_WIN *window;
- register file_infos *fp; /* used for scanning files */
- register int rc;
- line_list_ptr ll;
- line_list_ptr temp_ll;
-
- rc = OK;
- window = g_status.current_window;
- fp = g_status.current_file;
- if (window == NULL) {
- /*
- * special case if this is the first window on screen.
- */
- top = start_col = 0;
- bottom = g_display.nlines;
- end_col = g_display.ncols - 1;
- } else {
- /*
- * else put the new window in same place as current window.
- * make current window invisible. new window becomes current window.
- */
- top = window->top_line - 1;
- bottom = window->bottom_line;
- start_col = window->start_col;
- end_col = window->end_col;
- }
-
- assert( top < bottom );
- assert( start_col < end_col );
- assert( fp != NULL );
-
- if (create_window( &wp, top, bottom, start_col, end_col, fp ) == ERROR) {
- /*
- * out of memory
- */
- error( WARNING, bottom, main4 );
-
- /*
- * This is a real nuisance. We had room for the file and the
- * file structure, but not enough for the window as well.
- * Now we must free all the memory that has already been
- * allocated.
- */
- if (fp->ref_count == 0) {
-
- /*
- * remove fp from file pointer list.
- */
- if (fp->prev != NULL)
- fp->prev->next = fp->next;
- else
- g_status.file_list = fp->next;
-
- if (fp->next != NULL)
- fp->next->prev = fp->prev;
-
- /*
- * free the undo stack, line pointers, and linked list.
- */
-
- ll = fp->undo_top;
- while (ll != NULL) {
- temp_ll = ll->next;
- if (ll->line != NULL)
- my_free( ll->line );
- my_free( ll );
- ll = temp_ll;
- }
-
- ll = fp->line_list;
- while (ll != NULL) {
- temp_ll = ll->next;
- if (ll->line != NULL)
- my_free( ll->line );
- my_free( ll );
- ll = temp_ll;
- }
-
- #if defined( __MSC__ )
- _fheapmin( );
- #endif
-
- free( fp );
- wp = g_status.current_window;
- if (wp != NULL && wp->visible)
- g_status.current_file = wp->file_info;
- else
- g_status.stop = TRUE;
- }
- rc = ERROR;
- }
-
- if (rc != ERROR) {
- /*
- * set up the new cursor position as appropriate
- */
- wp->ccol = wp->start_col;
- wp->rcol = wp->bcol = 0;
- wp->rline = 1L;
- wp->ll = fp->line_list;
- wp->visible = TRUE;
- wp->letter = get_next_letter( fp->next_letter++ );
- if (window != NULL)
- window->visible = FALSE;
-
- /*
- * the new window becomes the current window.
- */
- g_status.current_window = wp;
- }
- return( rc );
- }
-
-
- /*
- * Name: get_next_letter
- * Purpose: To find next letter to use as a window name
- * Date: August 29, 1993
- * Author: Byrial Jensen
- * Passed: next_letter: The number window to create starting from 0
- * (Yes, the name is not very good, but I want to keep the
- * changes as small as possible)
- */
- int get_next_letter( int next_letter )
- {
- if (next_letter + 1 > (int)strlen( windowletters ) )
- return( LAST_WINDOWLETTER );
- else
- return( (int) (windowletters[next_letter]) );
- }
-
-
- /*
- * Name: next_window
- * Purpose: To move to the next visible window.
- * Date: June 5, 1991
- * Passed: window: pointer to current window
- * Notes: Start with current window. If next window exists then go to it
- * else go to the first (top) window on screen.
- * When I added vertical windows, finding the "correct" next
- * window became extremely, unnecessarily, unmanageably complicated.
- * let's just use a simple procedure to find the first available,
- * visible, next window.
- */
- int next_window( TDE_WIN *window )
- {
- register TDE_WIN *wp;
- int change;
-
- if (window != NULL) {
- change = FALSE;
- /*
- * start with current window and look for first next
- * visible window
- */
- wp = window->next;
- while (wp != NULL) {
- if (wp->visible) {
- change = TRUE;
- break;
- }
- wp = wp->next;
- }
-
- /*
- * if we haven't found a visible window yet, go to the beginning of
- * the list until we find a visible window.
- */
- if (!change) {
- wp = g_status.window_list;
- while (wp != window) {
- if (wp->visible) {
- change = TRUE;
- break;
- }
- wp = wp->next;
- }
- }
- if (change == TRUE) {
- entab_linebuff( );
- un_copy_line( window->ll, window, TRUE );
- g_status.current_window = wp;
- g_status.current_file = wp->file_info;
- }
- }
- return( OK );
- }
-
-
- /*
- * Name: prev_window
- * Purpose: To move to the previous visible window.
- * Date: June 5, 1991
- * Passed: window: pointer to current window
- * Notes: Start with current window. If previous window exists then go to
- * it else go to the last (bottom) window on screen. Opposite of
- * next_window.
- * when I added vertical windows, finding the "correct" previous
- * window became extremely, unnecessarily, unmanageably complicated.
- * let's just use a simple procedure to find the first available,
- * visible, previous window.
- */
- int prev_window( TDE_WIN *window )
- {
- register TDE_WIN *wp;
- int change;
-
- if (window != NULL) {
- change = FALSE;
-
- /*
- * start with current window and look for first previous
- * visible window
- */
- wp = window->prev;
- while (wp != NULL) {
- if (wp->visible) {
- change = TRUE;
- break;
- }
- wp = wp->prev;
- }
-
- /*
- * if we haven't found a visible window yet, go to the end of
- * the list and work backwards until we find a visible window.
- */
- if (!change) {
- wp = window->next;
- if (wp != NULL) {
- while (wp->next != NULL)
- wp = wp->next;
- while (wp != window) {
- if (wp->visible) {
- change = TRUE;
- break;
- }
- wp = wp->prev;
- }
- }
- }
- if (change == TRUE) {
- entab_linebuff( );
- un_copy_line( window->ll, window, TRUE );
- g_status.current_window = wp;
- g_status.current_file = wp->file_info;
- }
- }
- return( OK );
- }
-
-
- /*
- * Name: split_horizontal
- * Purpose: To split screen horizontally at the cursor.
- * Date: June 5, 1991
- * Modified: November 13, 1993, Frank Davis per Byrial Jensen
- * Passed: window: pointer to current window
- * Notes: split the screen horizontally at the cursor position.
- */
- int split_horizontal( TDE_WIN *window )
- {
- register TDE_WIN *wp;
- register TDE_WIN *win; /* register pointer for window */
- TDE_WIN *temp;
- file_infos *file; /* file structure for file belonging to new window */
- int rc;
-
- rc = OK;
- win = window;
- if ( win != NULL) {
-
- /*
- * check that there is room for the window
- */
- if (win->bottom_line - win->cline < 2) {
- /*
- * move cursor up first
- */
- error( WARNING, win->bottom_line, win1 );
- rc = ERROR;
- } else {
- file = win->file_info;
-
- assert( file != NULL );
-
- if (create_window( &temp, win->cline+1, win->bottom_line,
- win->start_col, win->end_col, file ) == ERROR) {
- /*
- * out of memory
- */
- error( WARNING, win->bottom_line, main4 );
- rc = ERROR;
- }
- if (rc == OK && temp != NULL) {
- entab_linebuff( );
- un_copy_line( win->ll, win, TRUE );
- wp = temp;
- /*
- * record that the current window has lost some lines from
- * the bottom for the new window, and adjust its page size
- * etc accordingly.
- */
- win->bottom_line = win->cline;
- setup_window( win );
- display_current_window( win );
-
- /*
- * set up the new cursor position as appropriate
- */
- wp->rcol = win->rcol;
- wp->ccol = win->ccol;
- wp->bcol = win->bcol;
- wp->rline = win->rline;
- wp->bin_offset = win->bin_offset;
- wp->ll = win->ll;
- wp->cline = wp->cline + win->cline - (win->top_line + win->ruler);
- if (wp->cline > wp->bottom_line)
- wp->cline = wp->bottom_line;
- wp->visible = TRUE;
- wp->vertical = win->vertical;
- wp->letter = get_next_letter( file->next_letter++ );
- wp->ruler = mode.ruler;
-
- /*
- * the new window becomes the current window.
- */
- g_status.current_window = wp;
-
- show_window_count( g_status.window_count );
- show_window_header( wp );
- display_current_window( wp );
- if (wp->vertical)
- show_vertical_separator( wp );
- make_ruler( wp );
- show_ruler( wp );
- rc = OK;
- }
- }
- } else
- rc = ERROR;
- return( rc );
- }
-
-
- /*
- * Name: split_vertical
- * Purpose: To split screen vertically at the cursor.
- * Date: June 5, 1991
- * Modified: November 13, 1993, Frank Davis per Byrial Jensen
- * Passed: window: pointer to current window
- * Notes: split the screen vertically at the cursor position.
- *
- * Change: Use of new function: get_next_letter( )
- */
- int split_vertical( TDE_WIN *window )
- {
- register TDE_WIN *wp;
- register TDE_WIN *win; /* register pointer for window */
- TDE_WIN *temp;
- file_infos *file; /* file structure for file belonging to new window */
- int rc;
-
- rc = OK;
- win = window;
- if (win != NULL) {
-
- /*
- * check that there is room for the window
- */
- if (win->start_col + 15 > win->ccol) {
- /*
- * move cursor right first
- */
- error( WARNING, win->bottom_line, win2 );
- rc = ERROR;
- } else if (win->end_col - 15 < win->ccol) {
- /*
- * move cursor left first
- */
- error( WARNING, win->bottom_line, win3 );
- rc = ERROR;
- } else {
- file = win->file_info;
-
- assert( file != NULL );
-
- if (create_window( &temp, win->top_line-1, win->bottom_line,
- win->ccol+1, win->end_col, file ) == ERROR) {
- /*
- * out of memory
- */
- error( WARNING, win->bottom_line, main4 );
- rc = ERROR;
- }
-
- if (rc == OK && temp != NULL) {
- entab_linebuff( );
- un_copy_line( win->ll, win, TRUE );
- wp = temp;
-
- /*
- * record that the current window has lost some columns from
- * the window to the left for the new window
- */
- win->ccol = win->end_col = win->ccol - 1;
- win->rcol--;
- win->vertical = TRUE;
- show_window_header( win );
- show_vertical_separator( win );
- display_current_window( win );
- make_ruler( win );
- show_ruler( win );
- show_ruler_pointer( win );
-
- /*
- * set up the new cursor position as appropriate
- */
- wp->rcol = win->rcol;
- wp->ccol = wp->start_col + win->ccol - win->start_col;
- if (wp->ccol > wp->end_col)
- wp->ccol = wp->end_col;
- wp->bcol = win->bcol;
- wp->rline = win->rline;
- wp->bin_offset = win->bin_offset;
- wp->ll = win->ll;
- wp->cline = win->cline;
- wp->visible = TRUE;
- wp->vertical = TRUE;
- wp->letter = get_next_letter( file->next_letter++ );
- wp->ruler = mode.ruler;
-
- /*
- * the new window becomes the current window.
- */
- g_status.current_window = wp;
-
- check_virtual_col( wp, wp->rcol, wp->ccol );
- wp->file_info->dirty = FALSE;
- show_window_count( g_status.window_count );
- show_window_header( wp );
- display_current_window( wp );
- make_ruler( wp );
- show_ruler( wp );
- }
- }
- } else
- rc = ERROR;
- return( rc );
- }
-
-
- /*
- * Name: show_vertical_separator
- * Purpose: To separate vertical screens
- * Date: June 5, 1991
- * Passed: window: pointer to current window
- */
- void show_vertical_separator( TDE_WIN *window )
- {
- int i;
- int line;
- int col;
-
- line = window->top_line - 1;
- col = window->end_col + 1;
- if (col < g_display.ncols - 1) {
- i = window->bottom_line - line;
-
- assert( i <= g_display.nlines );
-
- while (i-- >= 0)
- c_output( VERTICAL_CHAR, col, line++, g_display.head_color );
- }
- }
-
-
- /*
- * Name: size_window
- * Purpose: To change the size of the current and one other window.
- * Date: June 5, 1991
- * Passed: window: pointer to current window
- * Notes: Use the Up and Down arrow keys to make the current window
- * bigger or smaller. The window above will either grow
- * or contract accordingly.
- */
- int size_window( TDE_WIN *window )
- {
- int func;
- int c;
- int resize;
- int show_above_ruler;
- int old_bottom_line;
- int old_top_line;
- int new_bottom_line;
- int new_top_line;
- register TDE_WIN *above;
- register TDE_WIN *win;
- #if defined( __UNIX__ )
- chtype display_buff[MAX_COLS+2]; /* chtype is defined in curses.h */
- #else
- char display_buff[(MAX_COLS+2)*2];
- #endif
-
- win = window;
- if (win->top_line != 1 && !win->vertical) {
- entab_linebuff( );
- un_copy_line( win->ll, win, TRUE );
- save_screen_line( 0, win->bottom_line, display_buff );
-
- /*
- * press up or down to change window size
- */
- set_prompt( win4, win->bottom_line );
-
- /*
- * resizing only affects current window and above visible window
- */
- above = g_status.window_list;
- while (above->bottom_line + 2 != win->top_line || !above->visible)
- above = above->next;
- if (above->vertical)
- /*
- * cannot resize vertical window
- */
- error( WARNING, win->bottom_line, win5 );
- else {
- old_top_line = win->top_line;
- old_bottom_line = above->bottom_line;
- show_above_ruler = FALSE;
- for (func=0; func != AbortCommand && func != Rturn; ) {
-
- /*
- * If user has redined the ESC and Return keys, make them Rturn and
- * AbortCommand in this function.
- */
- c = getkey( );
- func = getfunc( c );
- if (c == RTURN || func == NextLine || func == BegNextLine)
- func = Rturn;
- else if (c == ESC)
- func = AbortCommand;
- resize = FALSE;
-
- /*
- * if LineUp, make current window top line grow and bottom line
- * of above window shrink. if window movement covers up current
- * line of window then we must adjust logical line and real line.
- */
- if (func == LineUp) {
- if (above->bottom_line > above->top_line + above->ruler) {
- if (win->rline == (win->cline - (win->top_line+win->ruler-1)))
- --win->cline;
- --win->top_line;
- if (above->cline == above->bottom_line)
- --above->cline;
- --above->bottom_line;
- resize = TRUE;
- if (mode.ruler) {
- if (win->ruler == FALSE) {
- if (win->cline == win->top_line)
- ++win->cline;
- if (win->cline > win->bottom_line)
- win->cline = win->bottom_line;
- win->ruler = TRUE;
- }
- }
- }
-
- /*
- * if LineDown, make current window top line shrink and bottom line
- * of above window grow. if window movement covers up current
- * line of window then we must adjust logical line and real line.
- */
- } else if (func == LineDown) {
- if (win->bottom_line > win->top_line + win->ruler) {
- if (win->cline == win->top_line + win->ruler)
- ++win->cline;
- ++win->top_line;
- ++above->bottom_line;
- resize = TRUE;
- if (mode.ruler) {
- if (above->ruler == FALSE) {
- if (above->cline == above->top_line)
- ++above->cline;
- if (above->cline > above->bottom_line)
- above->cline = above->bottom_line;
- above->ruler = TRUE;
- make_ruler( above );
- show_above_ruler = TRUE;
- }
- }
- }
- }
-
- /*
- * if we resize a window, then update window size and current and
- * real lines if needed.
- */
- if (resize == TRUE) {
- setup_window( above );
- display_current_window( above );
- if (show_above_ruler) {
- show_ruler( above );
- show_ruler_pointer( above );
- show_above_ruler = FALSE;
- }
- setup_window( win );
- show_window_header( win );
- win->ruler = mode.ruler;
- make_ruler( win );
- show_ruler( win );
- show_ruler_pointer( win );
- display_current_window( win );
- save_screen_line( 0, win->bottom_line, display_buff );
-
- /*
- * press up or down to change window size
- */
- set_prompt( win4, win->bottom_line );
- }
- }
- new_top_line = win->top_line;
- new_bottom_line = above->bottom_line;
- for (above=g_status.window_list; above != NULL; above=above->next) {
- if (!above->visible) {
- if (above->bottom_line == old_bottom_line) {
- above->bottom_line = new_bottom_line;
- if (above->cline < new_bottom_line)
- above->cline = new_bottom_line;
- setup_window( above );
- } else if (above->top_line == old_top_line) {
- above->top_line = new_top_line;
- if (above->cline < new_top_line)
- above->cline = new_top_line;
- if ((long)(above->cline+1L - (above->top_line+above->ruler)) >
- above->rline)
- above->cline = (int)above->rline + above->top_line +
- above->ruler - 1;
- setup_window( above );
- }
- }
- }
- }
- restore_screen_line( 0, win->bottom_line, display_buff );
- } else {
- if (win->vertical)
- /*
- * cannot resize vertical window
- */
- error( WARNING, win->bottom_line, win5 );
- else
- /*
- * cannot resize top window
- */
- error( WARNING, win->bottom_line, win6 );
- }
- return( OK );
- }
-
-
- /*
- * Name: zoom_window
- * Purpose: To blow-up current window.
- * Date: September 1, 1991
- * Passed: window: pointer to current window
- * Notes: Make all windows, visible and hidden, full size.
- */
- int zoom_window( TDE_WIN *window )
- {
- register TDE_WIN *wp;
-
- if (window != NULL) {
- entab_linebuff( );
- un_copy_line( window->ll, window, TRUE );
- for (wp=g_status.window_list; wp != NULL; wp=wp->next) {
- if (wp != window && wp->visible)
- wp->visible = FALSE;
-
- /*
- * can't diff one window, reset the diff
- */
- diff.defined = FALSE;
- if (wp->top_line != 1)
- wp->cline = wp->cline - (wp->top_line+wp->ruler) + 1;
- wp->top_line = 1;
- wp->bottom_line = g_display.nlines;
- wp->end_col = g_display.ncols - 1;
- wp->start_col = 0;
- wp->vertical = FALSE;
- check_virtual_col( wp, wp->rcol, wp->ccol );
- make_ruler( wp );
- }
- redraw_screen( window );
- show_ruler( window );
- }
- return( OK );
- }
-
-
- /*
- * Name: next_hidden_window
- * Purpose: To display the window that is "behind" current window.
- * Date: September 1, 1991
- * Passed: window: pointer to current window
- */
- int next_hidden_window( TDE_WIN *window )
- {
- int poof = FALSE;
- register TDE_WIN *wp;
-
- if (window != NULL) {
-
- /*
- * look for next hidden window starting with current window.
- */
- wp = window;
- for (wp=window->next; wp != NULL && !poof; ) {
- if (!wp->visible)
- poof = TRUE;
- else
- wp = wp->next;
- }
-
- /*
- * if we haven't found an invisible window yet, start looking
- * for a hidden window from the beginning of the window list.
- */
- if (!poof) {
- for (wp=g_status.window_list; wp != NULL && !poof; ) {
- if (!wp->visible)
- poof = TRUE;
- else
- wp = wp->next;
- }
- }
-
- if (poof) {
- entab_linebuff( );
- un_copy_line( window->ll, window, TRUE );
- wp->cline = window->top_line + window->ruler +
- (wp->cline - (wp->top_line + wp->ruler));
- wp->top_line = window->top_line;
- wp->bottom_line = window->bottom_line;
- wp->start_col = window->start_col;
- wp->end_col = window->end_col;
- wp->vertical = window->vertical;
- if (wp->cline < wp->top_line + wp->ruler)
- wp->cline = wp->top_line + wp->ruler;
- if (wp->cline > wp->bottom_line)
- wp->cline = wp->bottom_line;
- if ((wp->cline+1L - (wp->top_line+wp->ruler)) > wp->rline)
- wp->cline = (int)wp->rline + wp->top_line + wp->ruler - 1;
- check_virtual_col( wp, wp->rcol, wp->ccol );
- wp->visible = TRUE;
- window->visible = FALSE;
- if (diff.defined && (diff.w1 == window || diff.w2 == window))
- diff.defined = FALSE;
- g_status.current_window = wp;
- redraw_current_window( wp );
- make_ruler( wp );
- show_ruler( wp );
- }
- }
- return( OK );
- }
-
-
- /*
- * Name: setup_window
- * Purpose: To set the page length and the center line of a window, based
- * on the top and bottom lines.
- * Date: June 5, 1991
- * Passed: window: window to be set up
- */
- void setup_window( TDE_WIN *window )
- {
- window->page = window->bottom_line - (window->top_line + window->ruler) -
- g_status.overlap + 1;
- if (window->page < 1)
- window->page = 1;
- }
-
-
- /*
- * Name: finish
- * Purpose: To remove the current window and terminate the program if no
- * more windows are left.
- * Date: June 5, 1991
- * Passed: window: pointer to current window
- * Notes: Order of deciding which window becomes current window:
- * 1) If any invisible window with same top and bottom line,
- * and start_col and end_col, then first invisible one becomes
- * current window.
- * 2) window above if it exists becomes current window
- * 3) window below if it exists becomes current window
- * 4) window right if it exists becomes current window
- * 5) window left if it exists becomes current window
- * 6) first available invisible window becomes current window.
- * When I added vertical windows, this routine became a LOT
- * more complicated. To keep things reasonably sane, let's
- * only close windows that have three common edges, eg.
- *
- * ┌──────┬──────────┐
- * │ │ no │
- * │ ├─────┬────┤
- * │ │yes1 │yes1│
- * │ no ├─────┴────┤
- * │ │ yes2 │
- * │ ├──────────┤
- * │ │ yes2 │
- * └──────┴──────────┘
- *
- * Windows with 'no' cannot be closed. Windows with 'yes' can
- * be combined with windows that have the same yes number.
- */
- void finish( TDE_WIN *window )
- {
- register TDE_WIN *wp; /* for scanning other windows */
- register TDE_WIN *win; /* register pointer for window */
- file_infos *file, *fp; /* for scanning other files */
- int poof;
- int cline;
- int top;
- int bottom;
- int start_col;
- int end_col;
- int max_letter;
- int letter_index;
- int file_change = FALSE;
- line_list_ptr ll;
- line_list_ptr temp_ll;
- int major_choice;
- int minor_choice;
- #if defined( __UNIX__ )
- chtype display_buff[MAX_COLS+2]; /* chtype is defined in curses.h */
- #else
- char display_buff[(MAX_COLS+2)*2];
- #endif
-
- win = window;
- entab_linebuff( );
- if (un_copy_line( win->ll, win, TRUE ) == ERROR)
- return;
-
- file = win->file_info;
- /*
- * remove all hidden windows that point to same file
- */
- file = win->file_info;
- for (wp=g_status.window_list; wp != NULL; wp=wp->next) {
- if (wp->file_info == file) {
- if (!wp->visible) {
- if (wp->prev == NULL) {
- if (wp->next == NULL)
- g_status.stop = TRUE;
- else
- g_status.window_list = wp->next;
- } else
- wp->prev->next = wp->next;
- if (wp->next)
- wp->next->prev = wp->prev;
- --wp->file_info->ref_count;
- free( wp );
- --g_status.window_count;
- }
- }
- }
-
- if (win->prev == NULL && win->next == NULL)
- g_status.stop = TRUE;
-
- poof = FALSE;
-
- if (g_status.stop != TRUE) {
- /*
- * see if there are any invisible windows with same top and bottom,
- * lines, and start_col and end_col as this window. start looking at
- * end of window list.
- */
- top = win->top_line;
- bottom = win->bottom_line;
- start_col = win->start_col;
- end_col = win->end_col;
- wp = g_status.window_list;
- if (wp != NULL) {
- while (wp->next != NULL)
- wp = wp->next;
- }
- while (wp != NULL && poof == FALSE) {
- if (wp->top_line == top && wp->bottom_line == bottom &&
- wp->start_col == start_col && wp->end_col == end_col &&
- !wp->visible)
- poof = TRUE;
- else
- wp = wp->prev;
- }
-
- if (poof == FALSE) {
- /*
- * see if there are any windows above
- */
- wp = g_status.window_list;
- while (wp != NULL && poof == FALSE) {
- if (wp->bottom_line+2 == win->top_line &&
- wp->start_col == win->start_col &&
- wp->end_col == win->end_col && wp->visible) {
- poof = TRUE;
- top = wp->top_line;
- } else
- wp = wp->next;
- }
- if (poof == FALSE) {
- /*
- * see if there are any windows below
- */
- wp = g_status.window_list;
- while (wp != NULL && poof == FALSE) {
- if (wp->top_line-2 == win->bottom_line &&
- wp->start_col == win->start_col &&
- wp->end_col == win->end_col && wp->visible) {
- poof = TRUE;
- bottom = wp->bottom_line;
- } else
- wp = wp->next;
- }
- }
- if (poof == FALSE) {
- /*
- * see if there are any windows right
- */
- wp = g_status.window_list;
- while (wp != NULL && poof == FALSE) {
- if (wp->top_line == win->top_line &&
- wp->bottom_line == win->bottom_line &&
- wp->start_col-2 == win->end_col && wp->visible) {
- poof = TRUE;
- end_col = wp->end_col;
- } else
- wp = wp->next;
- }
- }
- if (poof == FALSE) {
- /*
- * see if there are any windows left
- */
- wp = g_status.window_list;
- while (wp != NULL && poof == FALSE) {
- if (wp->top_line == win->top_line &&
- wp->bottom_line == win->bottom_line &&
- wp->end_col+2 == win->start_col && wp->visible) {
- poof = TRUE;
- start_col = wp->start_col;
- } else
- wp = wp->next;
- }
- }
- if (poof == FALSE) {
- /*
- * see if there are any other invisible windows. start looking
- * at the end of the window list.
- */
- wp = g_status.window_list;
- if (wp != NULL) {
- while (wp->next != NULL)
- wp = wp->next;
- }
- while (wp != NULL && poof == FALSE) {
- if (!wp->visible)
- poof = TRUE;
- else
- wp = wp->prev;
- }
- }
- }
- if (poof) {
- wp->visible = TRUE;
- cline = wp->cline - (wp->top_line+wp->ruler);
- wp->top_line = top;
- wp->bottom_line = bottom;
- wp->cline = (wp->top_line+wp->ruler) + cline;
- if (wp->cline > wp->bottom_line)
- wp->cline = wp->top_line+wp->ruler;
- wp->start_col = start_col;
- wp->end_col = end_col;
- if (start_col == 0 && end_col == g_display.ncols - 1)
- wp->vertical = FALSE;
- else
- wp->vertical = TRUE;
- check_virtual_col( wp, wp->rcol, wp->ccol );
- setup_window( wp );
- show_window_header( wp );
- if (wp->vertical)
- show_vertical_separator( wp );
-
- /*
- * The window above, below, or previously invisible becomes the new
- * current window.
- */
- g_status.current_window = wp;
- }
- }
-
- if (!poof && g_status.stop != TRUE)
- /*
- * cannot close current window
- */
- error( WARNING, win->bottom_line, win7 );
- else {
-
- /*
- * free unused file memory if necessary
- */
- if (--file->ref_count == 0) {
-
- /*
- * if a block is marked, unmark it
- */
- if (file == g_status.marked_file) {
- g_status.marked = FALSE;
- g_status.marked_file = NULL;
- }
-
- for (fp=g_status.file_list; fp != NULL; fp=fp->next) {
- if (fp->file_no > file->file_no)
- fp->file_no--;
- }
- file_change = file->file_no;
-
- /*
- * no window now refers to this file, so remove file from the list
- */
- if (file->prev == NULL)
- g_status.file_list = file->next;
- else
- file->prev->next = file->next;
- if (file->next)
- file->next->prev = file->prev;
-
- /*
- * free the line pointers, linked list of line pointers, and
- * file struc.
- */
- ll = file->undo_top;
- while (ll != NULL) {
- temp_ll = ll->next;
- if (ll->line != NULL)
- my_free( ll->line );
- my_free( ll );
- ll = temp_ll;
- }
-
- ll = file->line_list;
- while (ll != NULL) {
- temp_ll = ll->next;
- if (ll->line != NULL)
- my_free( ll->line );
- my_free( ll );
- ll = temp_ll;
- }
-
- #if defined( __MSC__ )
- _fheapmin( );
- #endif
-
- free( file );
- if (--g_status.file_count) {
- show_file_count( g_status.file_count );
- show_avail_mem( );
- }
- }
-
- /*
- * remove the current window from the window list
- */
- if (win->prev == NULL)
- g_status.window_list = win->next;
- else
- win->prev->next = win->next;
-
- if (win->next)
- win->next->prev = win->prev;
-
- if (diff.defined && (diff.w1 == win || diff.w2 == win))
- diff.defined = FALSE;
-
- /*
- * free the memory taken by the window structure
- */
- free( win );
- --g_status.window_count;
-
- if (g_status.stop == FALSE) {
- g_status.current_file = wp->file_info;
- wp->file_info->dirty = LOCAL;
- make_ruler( wp );
- show_ruler( wp );
- show_window_count( g_status.window_count );
- if (file_change) {
- for (wp=g_status.window_list; wp!=NULL; wp=wp->next)
- if (wp->visible)
- show_window_number_letter( wp );
- } else {
- max_letter = 0;
- for (wp=g_status.window_list; wp!=NULL; wp=wp->next) {
- if (wp->file_info == file) {
- if (wp->letter == LAST_WINDOWLETTER) {
- max_letter = strlen( windowletters );
- break;
- } else {
- letter_index = strchr( windowletters, wp->letter )
- - windowletters;
- if (letter_index > max_letter)
- max_letter = letter_index;
- }
- }
- }
- if (max_letter < file->next_letter - 1)
- file->next_letter = max_letter + 1;
- }
- }
- }
-
- if (g_status.stop == TRUE) {
- if (g_status.sas_defined && g_status.sas_arg < g_status.sas_argc) {
- show_avail_mem( );
- for (bottom=0; bottom <= g_display.nlines; bottom++)
- eol_clear( 0, bottom, g_display.text_color );
- bottom = g_display.nlines;
- set_prompt( win18, bottom );
- top = getkey( );
- top = getfunc( top );
- if (top == PullDown) {
- major_choice = minor_choice = 0;
- save_screen_line( 0, 0, display_buff );
- top = lite_bar_menu( &major_choice, &minor_choice );
- if (top == Rturn) {
- top = menu[major_choice].minor[minor_choice].minor_func;
- if (top != RepeatGrep)
- top = ERROR;
- } else
- top = ERROR;
- restore_screen_line( 0, 0, display_buff );
- }
- eol_clear( 0, bottom, g_display.text_color );
- if (top == RepeatGrep) {
- g_status.command = RepeatGrep;
- g_status.window_list = g_status.current_window = NULL;
- if (search_and_seize( g_status.window_list ) != ERROR)
- g_status.stop = FALSE;
- }
- }
- }
- }
-
-
- /*
- * Name: create_window
- * Purpose: To allocate space for a new window structure and set up some
- * of the relevant fields.
- * Date: June 5, 1991
- * Passed: window: pointer to window pointer
- * top: the top line of the new window
- * bottom: the bottom line of the new window
- * start_col: starting column of window on screen
- * end_col: ending column of window on screen
- * file: the file structure to be associated with the new window
- * Returns: OK if window could be created
- * ERROR if out of memory
- */
- int create_window( TDE_WIN **window, int top, int bottom, int start_col,
- int end_col, file_infos *file )
- {
- TDE_WIN *wp; /* temporary variable - use it instead of **window */
- register TDE_WIN *prev;
- int rc; /* return code */
-
- rc = OK;
- /*
- * allocate space for new window structure
- */
- if ((*window = (TDE_WIN *)calloc( 1, sizeof(TDE_WIN) )) == NULL) {
- /*
- * out of memory
- */
- error( WARNING, g_display.nlines, main4 );
- rc = ERROR;
- } else {
-
- /*
- * set up appropriate fields
- */
- wp = *window;
- wp->file_info = file;
- wp->top_line = top+1;
- wp->bottom_line = bottom;
- wp->start_col = start_col;
- wp->end_col = end_col;
- wp->bin_offset = 0;
- wp->ruler = mode.ruler;
- make_ruler( wp );
- wp->cline = wp->top_line + wp->ruler;
- if (start_col == 0 && end_col == g_display.ncols-1)
- wp->vertical = FALSE;
- else
- wp->vertical = TRUE;
- wp->prev = NULL;
- wp->next = NULL;
-
- setup_window( wp );
-
- /*
- * add window into window list
- */
- prev = g_status.current_window;
- if (prev) {
- (*window)->prev = prev;
- if (prev->next)
- prev->next->prev = *window;
- (*window)->next = prev->next;
- prev->next = *window;
- }
- if (g_status.window_list == NULL)
- g_status.window_list = *window;
-
- /*
- * record that another window is referencing this file
- */
- ++file->ref_count;
- file->dirty = LOCAL;
- ++g_status.window_count;
- }
- return( rc );
- }
-