Adding upstream version 3:4.8.30.upstream/3%4.8.30

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1122 insertions, 0 deletions

diff --git a/src/editor/editdraw.c b/src/editor/editdraw.c
new file mode 100644
index 0000000..fbd1e09
--- /dev/null
+++ b/src/editor/editdraw.c
@@ -0,0 +1,1122 @@
+/*
+   Editor text drawing.
+
+   Copyright (C) 1996-2023
+   Free Software Foundation, Inc.
+
+   Written by:
+   Paul Sheer, 1996, 1997
+   Andrew Borodin <aborodin@vmail.ru> 2012-2022
+   Slava Zanko <slavazanko@gmail.com>, 2013
+
+   This file is part of the Midnight Commander.
+
+   The Midnight Commander is free software: you can redistribute it
+   and/or modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation, either version 3 of the License,
+   or (at your option) any later version.
+
+   The Midnight Commander is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file
+ *  \brief Source: editor text drawing
+ *  \author Paul Sheer
+ *  \date 1996, 1997
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#include <sys/stat.h>
+
+#include "lib/global.h"
+#include "lib/tty/tty.h"        /* tty_printf() */
+#include "lib/tty/key.h"        /* is_idle() */
+#include "lib/skin.h"
+#include "lib/strutil.h"        /* utf string functions */
+#include "lib/util.h"           /* is_printable() */
+#include "lib/widget.h"
+#ifdef HAVE_CHARSET
+#include "lib/charsets.h"
+#endif
+
+#include "edit-impl.h"
+#include "editwidget.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+#define MAX_LINE_LEN 1024
+
+/* Text styles */
+#define MOD_ABNORMAL            (1 << 8)
+#define MOD_BOLD                (1 << 9)
+#define MOD_MARKED              (1 << 10)
+#define MOD_CURSOR              (1 << 11)
+#define MOD_WHITESPACE          (1 << 12)
+
+#define edit_move(x,y) widget_gotoyx(edit, y, x);
+
+#define key_pending(x) (!is_idle())
+
+#define EDITOR_MINIMUM_TERMINAL_WIDTH 30
+
+/*** file scope type declarations ****************************************************************/
+
+typedef struct
+{
+    unsigned int ch;
+    unsigned int style;
+} line_s;
+
+/*** forward declarations (file scope functions) *************************************************/
+
+/*** file scope variables ************************************************************************/
+
+/*** file scope functions ************************************************************************/
+
+static inline void
+printwstr (const char *s, int len)
+{
+    if (len > 0)
+        tty_printf ("%-*.*s", len, len, s);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static inline void
+status_string (WEdit * edit, char *s, int w)
+{
+    char byte_str[16];
+
+    /*
+     * If we are at the end of file, print <EOF>,
+     * otherwise print the current character as is (if printable),
+     * as decimal and as hex.
+     */
+    if (edit->buffer.curs1 >= edit->buffer.size)
+        strcpy (byte_str, "<EOF>     ");
+#ifdef HAVE_CHARSET
+    else if (edit->utf8)
+    {
+        unsigned int cur_utf;
+        int char_length = 1;
+
+        cur_utf = edit_buffer_get_utf (&edit->buffer, edit->buffer.curs1, &char_length);
+        if (char_length > 0)
+            g_snprintf (byte_str, sizeof (byte_str), "%04u 0x%03X",
+                        (unsigned) cur_utf, (unsigned) cur_utf);
+        else
+        {
+            cur_utf = edit_buffer_get_current_byte (&edit->buffer);
+            g_snprintf (byte_str, sizeof (byte_str), "%04d 0x%03X",
+                        (int) cur_utf, (unsigned) cur_utf);
+        }
+    }
+#endif
+    else
+    {
+        unsigned char cur_byte;
+
+        cur_byte = edit_buffer_get_current_byte (&edit->buffer);
+        g_snprintf (byte_str, sizeof (byte_str), "%4d 0x%03X", (int) cur_byte, (unsigned) cur_byte);
+    }
+
+    /* The field lengths just prevent the status line from shortening too much */
+    if (edit_options.simple_statusbar)
+        g_snprintf (s, w,
+                    "%c%c%c%c %3ld %5ld/%ld %6ld/%ld %s %s",
+                    edit->mark1 != edit->mark2 ? (edit->column_highlight ? 'C' : 'B') : '-',
+                    edit->modified ? 'M' : '-',
+                    macro_index < 0 ? '-' : 'R',
+                    edit->overwrite == 0 ? '-' : 'O',
+                    edit->curs_col + edit->over_col,
+                    edit->buffer.curs_line + 1,
+                    edit->buffer.lines + 1, (long) edit->buffer.curs1, (long) edit->buffer.size,
+                    byte_str,
+#ifdef HAVE_CHARSET
+                    mc_global.source_codepage >= 0 ? get_codepage_id (mc_global.source_codepage) :
+#endif
+                    "");
+    else
+        g_snprintf (s, w,
+                    "[%c%c%c%c] %2ld L:[%3ld+%2ld %3ld/%3ld] *(%-4ld/%4ldb) %s  %s",
+                    edit->mark1 != edit->mark2 ? (edit->column_highlight ? 'C' : 'B') : '-',
+                    edit->modified ? 'M' : '-',
+                    macro_index < 0 ? '-' : 'R',
+                    edit->overwrite == 0 ? '-' : 'O',
+                    edit->curs_col + edit->over_col,
+                    edit->start_line + 1,
+                    edit->curs_row,
+                    edit->buffer.curs_line + 1,
+                    edit->buffer.lines + 1, (long) edit->buffer.curs1, (long) edit->buffer.size,
+                    byte_str,
+#ifdef HAVE_CHARSET
+                    mc_global.source_codepage >= 0 ? get_codepage_id (mc_global.source_codepage) :
+#endif
+                    "");
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/**
+ * Draw the status line at the top of the screen for fullscreen editor window.
+ *
+ * @param edit  editor object
+ * @param color color pair
+ */
+
+static inline void
+edit_status_fullscreen (WEdit * edit, int color)
+{
+    Widget *h = WIDGET (WIDGET (edit)->owner);
+    const int w = h->rect.cols;
+    const int gap = 3;          /* between the filename and the status */
+    const int right_gap = 5;    /* at the right end of the screen */
+    const int preferred_fname_len = 16;
+    char *status;
+    size_t status_size;
+    int status_len;
+    const char *fname = "";
+    int fname_len;
+
+    status_size = w + 1;
+    status = g_malloc (status_size);
+    status_string (edit, status, status_size);
+    status_len = (int) str_term_width1 (status);
+
+    if (edit->filename_vpath != NULL)
+    {
+        fname = vfs_path_get_last_path_str (edit->filename_vpath);
+
+        if (!edit_options.state_full_filename)
+            fname = x_basename (fname);
+    }
+
+    fname_len = str_term_width1 (fname);
+    if (fname_len < preferred_fname_len)
+        fname_len = preferred_fname_len;
+
+    if (fname_len + gap + status_len + right_gap >= w)
+    {
+        if (preferred_fname_len + gap + status_len + right_gap >= w)
+            fname_len = preferred_fname_len;
+        else
+            fname_len = w - (gap + status_len + right_gap);
+        fname = str_trunc (fname, fname_len);
+    }
+
+    widget_gotoyx (h, 0, 0);
+    tty_setcolor (color);
+    printwstr (fname, fname_len + gap);
+    printwstr (status, w - (fname_len + gap));
+
+    if (edit_options.simple_statusbar && w > EDITOR_MINIMUM_TERMINAL_WIDTH)
+    {
+        int percent;
+
+        percent = edit_buffer_calc_percent (&edit->buffer, edit->buffer.curs1);
+        widget_gotoyx (h, 0, w - 6 - 6);
+        tty_printf (" %3d%%", percent);
+    }
+
+    g_free (status);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/**
+ * Draw status line for editor window if window is not in fullscreen mode.
+ *
+ * @param edit editor object
+ */
+
+static inline void
+edit_status_window (WEdit * edit)
+{
+    Widget *w = WIDGET (edit);
+    int y, x;
+    int cols = w->rect.cols;
+
+    tty_setcolor (STATUSBAR_COLOR);
+
+    if (cols > 5)
+    {
+        const char *fname = N_("NoName");
+
+        if (edit->filename_vpath != NULL)
+        {
+            fname = vfs_path_get_last_path_str (edit->filename_vpath);
+
+            if (!edit_options.state_full_filename)
+                fname = x_basename (fname);
+        }
+#ifdef ENABLE_NLS
+        else
+            fname = _(fname);
+#endif
+
+        edit_move (2, 0);
+        tty_printf ("[%s]", str_term_trim (fname, w->rect.cols - 8 - 6));
+    }
+
+    tty_getyx (&y, &x);
+    x -= w->rect.x;
+    x += 4;
+    if (x + 6 <= cols - 2 - 6)
+    {
+        edit_move (x, 0);
+        tty_printf ("[%c%c%c%c]",
+                    edit->mark1 != edit->mark2 ? (edit->column_highlight ? 'C' : 'B') : '-',
+                    edit->modified ? 'M' : '-',
+                    macro_index < 0 ? '-' : 'R', edit->overwrite == 0 ? '-' : 'O');
+    }
+
+    if (cols > 30)
+    {
+        edit_move (2, w->rect.lines - 1);
+        tty_printf ("%3ld %5ld/%ld %6ld/%ld",
+                    edit->curs_col + edit->over_col,
+                    edit->buffer.curs_line + 1, edit->buffer.lines + 1, (long) edit->buffer.curs1,
+                    (long) edit->buffer.size);
+    }
+
+    /*
+     * If we are at the end of file, print <EOF>,
+     * otherwise print the current character as is (if printable),
+     * as decimal and as hex.
+     */
+    if (cols > 46)
+    {
+        edit_move (32, w->rect.lines - 1);
+        if (edit->buffer.curs1 >= edit->buffer.size)
+            tty_print_string ("[<EOF>       ]");
+#ifdef HAVE_CHARSET
+        else if (edit->utf8)
+        {
+            unsigned int cur_utf;
+            int char_length = 1;
+
+            cur_utf = edit_buffer_get_utf (&edit->buffer, edit->buffer.curs1, &char_length);
+            if (char_length <= 0)
+                cur_utf = edit_buffer_get_current_byte (&edit->buffer);
+            tty_printf ("[%05u 0x%04X]", cur_utf, cur_utf);
+        }
+#endif
+        else
+        {
+            unsigned char cur_byte;
+
+            cur_byte = edit_buffer_get_current_byte (&edit->buffer);
+            tty_printf ("[%05u 0x%04X]", (unsigned int) cur_byte, (unsigned int) cur_byte);
+        }
+    }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/**
+ * Draw a frame around edit area.
+ *
+ * @param edit   editor object
+ * @param color  color pair
+ * @param active TRUE if editor object is focused
+ */
+
+static inline void
+edit_draw_frame (const WEdit * edit, int color, gboolean active)
+{
+    const Widget *w = CONST_WIDGET (edit);
+
+    /* draw a frame around edit area */
+    tty_setcolor (color);
+    /* draw double frame for active window if skin supports that */
+    tty_draw_box (w->rect.y, w->rect.x, w->rect.lines, w->rect.cols, !active);
+    /* draw a drag marker */
+    if (edit->drag_state == MCEDIT_DRAG_NONE)
+    {
+        tty_setcolor (EDITOR_FRAME_DRAG);
+        widget_gotoyx (w, w->rect.lines - 1, w->rect.cols - 1);
+        tty_print_alt_char (ACS_LRCORNER, TRUE);
+    }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/**
+ * Draw a window control buttons.
+ *
+ * @param edit  editor object
+ * @param color color pair
+ */
+
+static inline void
+edit_draw_window_icons (const WEdit * edit, int color)
+{
+    const Widget *w = CONST_WIDGET (edit);
+    char tmp[17];
+
+    tty_setcolor (color);
+    if (edit->fullscreen)
+        widget_gotoyx (w->owner, 0, WIDGET (w->owner)->rect.cols - 6);
+    else
+        widget_gotoyx (w, 0, w->rect.cols - 8);
+    g_snprintf (tmp, sizeof (tmp), "[%s][%s]", edit_window_state_char, edit_window_close_char);
+    tty_print_string (tmp);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static inline void
+print_to_widget (WEdit * edit, long row, int start_col, int start_col_real,
+                 long end_col, line_s line[], char *status, int bookmarked)
+{
+    Widget *w = WIDGET (edit);
+    line_s *p;
+    int x, x1, y, cols_to_skip;
+    int i;
+    int wrap_start;
+    int len;
+
+    x = start_col_real;
+    x1 = start_col + EDIT_TEXT_HORIZONTAL_OFFSET + edit_options.line_state_width;
+    y = row + EDIT_TEXT_VERTICAL_OFFSET;
+    cols_to_skip = abs (x);
+
+    if (!edit->fullscreen)
+    {
+        x1++;
+        y++;
+    }
+
+    tty_setcolor (EDITOR_NORMAL_COLOR);
+    if (bookmarked != 0)
+        tty_setcolor (bookmarked);
+
+    len = end_col + 1 - start_col;
+    wrap_start = edit_options.word_wrap_line_length + edit->start_col;
+
+    if (len > 0 && w->rect.y + y >= 0)
+    {
+        if (!edit_options.show_right_margin || wrap_start > end_col)
+            tty_draw_hline (w->rect.y + y, w->rect.x + x1, ' ', len);
+        else if (wrap_start < 0)
+        {
+            tty_setcolor (EDITOR_RIGHT_MARGIN_COLOR);
+            tty_draw_hline (w->rect.y + y, w->rect.x + x1, ' ', len);
+        }
+        else
+        {
+            if (wrap_start > 0)
+                tty_draw_hline (w->rect.y + y, w->rect.x + x1, ' ', wrap_start);
+
+            len -= wrap_start;
+            if (len > 0)
+            {
+                tty_setcolor (EDITOR_RIGHT_MARGIN_COLOR);
+                tty_draw_hline (w->rect.y + y, w->rect.x + x1 + wrap_start, ' ', len);
+            }
+        }
+    }
+
+    if (edit_options.line_state)
+    {
+        tty_setcolor (LINE_STATE_COLOR);
+
+        for (i = 0; i < LINE_STATE_WIDTH; i++)
+        {
+            edit_move (x1 + i - edit_options.line_state_width, y);
+            if (status[i] == '\0')
+                status[i] = ' ';
+            tty_print_char (status[i]);
+        }
+    }
+
+    edit_move (x1, y);
+
+    i = 1;
+    for (p = line; p->ch != 0; p++)
+    {
+        int style;
+        unsigned int textchar;
+        int color;
+
+        if (cols_to_skip != 0)
+        {
+            cols_to_skip--;
+            continue;
+        }
+
+        style = p->style & 0xFF00;
+        textchar = p->ch;
+        /* If non-printable - use black background */
+        color = (style & MOD_ABNORMAL) != 0 ? 0 : p->style >> 16;
+
+        if ((style & MOD_WHITESPACE) != 0)
+        {
+            if ((style & MOD_MARKED) == 0)
+                tty_setcolor (EDITOR_WHITESPACE_COLOR);
+            else
+            {
+                textchar = ' ';
+                tty_setcolor (EDITOR_MARKED_COLOR);
+            }
+        }
+        else if ((style & MOD_BOLD) != 0)
+            tty_setcolor (EDITOR_BOLD_COLOR);
+        else if ((style & MOD_MARKED) != 0)
+            tty_setcolor (EDITOR_MARKED_COLOR);
+        else
+            tty_lowlevel_setcolor (color);
+
+        if (edit_options.show_right_margin)
+        {
+            if (i > edit_options.word_wrap_line_length + edit->start_col)
+                tty_setcolor (EDITOR_RIGHT_MARGIN_COLOR);
+            i++;
+        }
+
+        tty_print_anychar (textchar);
+    }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/** b is a pointer to the beginning of the line */
+
+static void
+edit_draw_this_line (WEdit * edit, off_t b, long row, long start_col, long end_col)
+{
+    Widget *w = WIDGET (edit);
+    line_s line[MAX_LINE_LEN];
+    line_s *p = line;
+    off_t q;
+    int col, start_col_real;
+    int abn_style;
+    int book_mark = 0;
+    char line_stat[LINE_STATE_WIDTH + 1] = "\0";
+
+    if (row > w->rect.lines - 1 - EDIT_TEXT_VERTICAL_OFFSET - 2 * (edit->fullscreen ? 0 : 1))
+        return;
+
+    if (book_mark_query_color (edit, edit->start_line + row, BOOK_MARK_COLOR))
+        book_mark = BOOK_MARK_COLOR;
+    else if (book_mark_query_color (edit, edit->start_line + row, BOOK_MARK_FOUND_COLOR))
+        book_mark = BOOK_MARK_FOUND_COLOR;
+
+    if (book_mark != 0)
+        abn_style = book_mark << 16;
+    else
+        abn_style = MOD_ABNORMAL;
+
+    end_col -= EDIT_TEXT_HORIZONTAL_OFFSET + edit_options.line_state_width;
+    if (!edit->fullscreen)
+    {
+        end_col--;
+        if (w->rect.x + w->rect.cols <= WIDGET (w->owner)->rect.cols)
+            end_col--;
+    }
+
+    q = edit_move_forward3 (edit, b, start_col - edit->start_col, 0);
+    col = (int) edit_move_forward3 (edit, b, 0, q);
+    start_col_real = col + edit->start_col;
+
+    if (edit_options.line_state)
+    {
+        long cur_line;
+
+        cur_line = edit->start_line + row;
+        if (cur_line <= edit->buffer.lines)
+            g_snprintf (line_stat, sizeof (line_stat), "%7ld ", cur_line + 1);
+        else
+        {
+            memset (line_stat, ' ', LINE_STATE_WIDTH);
+            line_stat[LINE_STATE_WIDTH] = '\0';
+        }
+
+        if (book_mark_query_color (edit, cur_line, BOOK_MARK_COLOR))
+            g_snprintf (line_stat, 2, "*");
+    }
+
+    if (col <= -(edit->start_col + 16))
+        start_col_real = start_col = 0;
+    else
+    {
+        off_t m1 = 0, m2 = 0;
+
+        eval_marks (edit, &m1, &m2);
+
+        if (row <= edit->buffer.lines - edit->start_line)
+        {
+            off_t tws = 0;
+
+            if (edit_options.visible_tws && tty_use_colors ())
+                for (tws = edit_buffer_get_eol (&edit->buffer, b); tws > b; tws--)
+                {
+                    unsigned int c;
+
+                    c = edit_buffer_get_byte (&edit->buffer, tws - 1);
+                    if (!whitespace (c))
+                        break;
+                }
+
+            while (col <= end_col - edit->start_col)
+            {
+                int char_length = 1;
+                unsigned int c;
+                gboolean wide_width_char = FALSE;
+                gboolean control_char = FALSE;
+
+                p->ch = 0;
+                p->style = q == edit->buffer.curs1 ? MOD_CURSOR : 0;
+
+                if (q >= m1 && q < m2)
+                {
+                    if (!edit->column_highlight)
+                        p->style |= MOD_MARKED;
+                    else
+                    {
+                        long x, cl;
+
+                        x = (long) edit_move_forward3 (edit, b, 0, q);
+                        cl = MIN (edit->column1, edit->column2);
+                        if (x >= cl)
+                        {
+                            cl = MAX (edit->column1, edit->column2);
+                            if (x < cl)
+                                p->style |= MOD_MARKED;
+                        }
+                    }
+                }
+
+                if (q == edit->bracket)
+                    p->style |= MOD_BOLD;
+                if (q >= edit->found_start && q < (off_t) (edit->found_start + edit->found_len))
+                    p->style |= MOD_BOLD;
+
+#ifdef HAVE_CHARSET
+                if (edit->utf8)
+                    c = edit_buffer_get_utf (&edit->buffer, q, &char_length);
+                else
+#endif
+                    c = edit_buffer_get_byte (&edit->buffer, q);
+
+                /* we don't use bg for mc - fg contains both */
+                if (book_mark != 0)
+                    p->style |= book_mark << 16;
+                else
+                {
+                    int color;
+
+                    color = edit_get_syntax_color (edit, q);
+                    p->style |= color << 16;
+                }
+
+                switch (c)
+                {
+                case '\n':
+                    col = end_col - edit->start_col + 1;        /* quit */
+                    break;
+
+                case '\t':
+                    {
+                        int tab_over;
+                        int i;
+
+                        i = TAB_SIZE - ((int) col % TAB_SIZE);
+                        tab_over = (end_col - edit->start_col) - (col + i - 1);
+                        if (tab_over < 0)
+                            i += tab_over;
+                        col += i;
+                        if ((edit_options.visible_tabs || (edit_options.visible_tws && q >= tws))
+                            && enable_show_tabs_tws && tty_use_colors ())
+                        {
+                            if ((p->style & MOD_MARKED) != 0)
+                                c = p->style;
+                            else if (book_mark != 0)
+                                c |= book_mark << 16;
+                            else
+                                c = p->style | MOD_WHITESPACE;
+                            if (i > 2)
+                            {
+                                p->ch = '<';
+                                p->style = c;
+                                p++;
+                                while (--i > 1)
+                                {
+                                    p->ch = '-';
+                                    p->style = c;
+                                    p++;
+                                }
+                                p->ch = '>';
+                                p->style = c;
+                                p++;
+                            }
+                            else if (i > 1)
+                            {
+                                p->ch = '<';
+                                p->style = c;
+                                p++;
+                                p->ch = '>';
+                                p->style = c;
+                                p++;
+                            }
+                            else
+                            {
+                                p->ch = '>';
+                                p->style = c;
+                                p++;
+                            }
+                        }
+                        else if (edit_options.visible_tws && q >= tws && enable_show_tabs_tws
+                                 && tty_use_colors ())
+                        {
+                            p->ch = '.';
+                            p->style |= MOD_WHITESPACE;
+                            c = p->style & ~MOD_CURSOR;
+                            p++;
+                            while (--i != 0)
+                            {
+                                p->ch = ' ';
+                                p->style = c;
+                                p++;
+                            }
+                        }
+                        else
+                        {
+                            p->ch |= ' ';
+                            c = p->style & ~MOD_CURSOR;
+                            p++;
+                            while (--i != 0)
+                            {
+                                p->ch = ' ';
+                                p->style = c;
+                                p++;
+                            }
+                        }
+                    }
+                    break;
+
+                case ' ':
+                    if (edit_options.visible_tws && q >= tws && enable_show_tabs_tws
+                        && tty_use_colors ())
+                    {
+                        p->ch = '.';
+                        p->style |= MOD_WHITESPACE;
+                        p++;
+                        col++;
+                        break;
+                    }
+                    MC_FALLTHROUGH;
+
+                default:
+#ifdef HAVE_CHARSET
+                    if (mc_global.utf8_display)
+                    {
+                        if (!edit->utf8)
+                            c = convert_from_8bit_to_utf_c ((unsigned char) c, edit->converter);
+                        else if (g_unichar_iswide (c))
+                        {
+                            wide_width_char = TRUE;
+                            col++;
+                        }
+                    }
+                    else if (edit->utf8)
+                        c = convert_from_utf_to_current_c (c, edit->converter);
+                    else
+                        c = convert_to_display_c (c);
+#endif
+
+                    /* Caret notation for control characters */
+                    if (c < 32)
+                    {
+                        p->ch = '^';
+                        p->style = abn_style;
+                        p++;
+                        p->ch = c + 0x40;
+                        p->style = abn_style;
+                        p++;
+                        col += 2;
+                        control_char = TRUE;
+                        break;
+                    }
+                    if (c == 127)
+                    {
+                        p->ch = '^';
+                        p->style = abn_style;
+                        p++;
+                        p->ch = '?';
+                        p->style = abn_style;
+                        p++;
+                        col += 2;
+                        control_char = TRUE;
+                        break;
+                    }
+#ifdef HAVE_CHARSET
+                    if (edit->utf8)
+                    {
+                        if (g_unichar_isprint (c))
+                            p->ch = c;
+                        else
+                        {
+                            p->ch = '.';
+                            p->style = abn_style;
+                        }
+                        p++;
+                    }
+                    else
+#endif
+                    {
+                        if ((mc_global.utf8_display && g_unichar_isprint (c)) ||
+                            (!mc_global.utf8_display && is_printable (c)))
+                        {
+                            p->ch = c;
+                            p++;
+                        }
+                        else
+                        {
+                            p->ch = '.';
+                            p->style = abn_style;
+                            p++;
+                        }
+                    }
+                    col++;
+                    break;
+                }               /* case */
+
+                q++;
+                if (char_length > 1)
+                    q += char_length - 1;
+
+                if (col > (end_col - edit->start_col + 1))
+                {
+                    if (wide_width_char)
+                    {
+                        p--;
+                        break;
+                    }
+                    if (control_char)
+                    {
+                        p -= 2;
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+    p->ch = 0;
+
+    print_to_widget (edit, row, start_col, start_col_real, end_col, line, line_stat, book_mark);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static inline void
+edit_draw_this_char (WEdit * edit, off_t curs, long row, long start_column, long end_column)
+{
+    off_t b;
+
+    b = edit_buffer_get_bol (&edit->buffer, curs);
+    edit_draw_this_line (edit, b, row, start_column, end_column);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/** cursor must be in screen for other than REDRAW_PAGE passed in force */
+
+static inline void
+render_edit_text (WEdit * edit, long start_row, long start_column, long end_row, long end_column)
+{
+    static long prev_curs_row = 0;
+    static off_t prev_curs = 0;
+
+    Widget *we = WIDGET (edit);
+    Widget *wh = WIDGET (we->owner);
+    WRect *w = &we->rect;
+
+    int force = edit->force;
+    int y1, x1, y2, x2;
+    int last_line, last_column;
+
+    /* draw only visible region */
+
+    last_line = wh->rect.y + wh->rect.lines - 1;
+
+    y1 = w->y;
+    if (y1 > last_line - 1 /* buttonbar */ )
+        return;
+
+    last_column = wh->rect.x + wh->rect.cols - 1;
+
+    x1 = w->x;
+    if (x1 > last_column)
+        return;
+
+    y2 = w->y + w->lines - 1;
+    if (y2 < wh->rect.y + 1 /* menubar */ )
+        return;
+
+    x2 = w->x + w->cols - 1;
+    if (x2 < wh->rect.x)
+        return;
+
+    if ((force & REDRAW_IN_BOUNDS) == 0)
+    {
+        /* !REDRAW_IN_BOUNDS means to ignore bounds and redraw whole rows */
+        /* draw only visible region */
+
+        if (y2 <= last_line - 1 /* buttonbar */ )
+            end_row = w->lines - 1;
+        else if (y1 >= wh->rect.y + 1 /* menubar */ )
+            end_row = wh->rect.lines - 1 - y1 - 1;
+        else
+            end_row = start_row + wh->rect.lines - 1 - 1;
+
+        if (x2 <= last_column)
+            end_column = w->cols - 1;
+        else if (x1 >= wh->rect.x)
+            end_column = wh->rect.cols - 1 - x1;
+        else
+            end_column = start_column + wh->rect.cols - 1;
+    }
+
+    /*
+     * If the position of the page has not moved then we can draw the cursor
+     * character only.  This will prevent line flicker when using arrow keys.
+     */
+    if ((force & REDRAW_CHAR_ONLY) == 0 || (force & REDRAW_PAGE) != 0)
+    {
+        long row = 0;
+        long b;
+
+        if ((force & REDRAW_PAGE) != 0)
+        {
+            b = edit_buffer_get_forward_offset (&edit->buffer, edit->start_display, start_row, 0);
+            for (row = start_row; row <= end_row; row++)
+            {
+                if (key_pending (edit))
+                    return;
+                edit_draw_this_line (edit, b, row, start_column, end_column);
+                b = edit_buffer_get_forward_offset (&edit->buffer, b, 1, 0);
+            }
+        }
+        else
+        {
+            long curs_row = edit->curs_row;
+
+            if ((force & REDRAW_BEFORE_CURSOR) != 0 && start_row < curs_row)
+            {
+                long upto;
+
+                b = edit->start_display;
+                upto = MIN (curs_row - 1, end_row);
+                for (row = start_row; row <= upto; row++)
+                {
+                    if (key_pending (edit))
+                        return;
+                    edit_draw_this_line (edit, b, row, start_column, end_column);
+                    b = edit_buffer_get_forward_offset (&edit->buffer, b, 1, 0);
+                }
+            }
+
+            /*          if (force & REDRAW_LINE)          ---> default */
+            b = edit_buffer_get_current_bol (&edit->buffer);
+            if (curs_row >= start_row && curs_row <= end_row)
+            {
+                if (key_pending (edit))
+                    return;
+                edit_draw_this_line (edit, b, curs_row, start_column, end_column);
+            }
+
+            if ((force & REDRAW_AFTER_CURSOR) != 0 && end_row > curs_row)
+            {
+                b = edit_buffer_get_forward_offset (&edit->buffer, b, 1, 0);
+                for (row = MAX (curs_row + 1, start_row); row <= end_row; row++)
+                {
+                    if (key_pending (edit))
+                        return;
+                    edit_draw_this_line (edit, b, row, start_column, end_column);
+                    b = edit_buffer_get_forward_offset (&edit->buffer, b, 1, 0);
+                }
+            }
+
+            if ((force & REDRAW_LINE_ABOVE) != 0 && curs_row >= 1)
+            {
+                row = curs_row - 1;
+                b = edit_buffer_get_backward_offset (&edit->buffer,
+                                                     edit_buffer_get_current_bol (&edit->buffer),
+                                                     1);
+                if (row >= start_row && row <= end_row)
+                {
+                    if (key_pending (edit))
+                        return;
+                    edit_draw_this_line (edit, b, row, start_column, end_column);
+                }
+            }
+
+            if ((force & REDRAW_LINE_BELOW) != 0 && row < w->lines - 1)
+            {
+                row = curs_row + 1;
+                b = edit_buffer_get_current_bol (&edit->buffer);
+                b = edit_buffer_get_forward_offset (&edit->buffer, b, 1, 0);
+                if (row >= start_row && row <= end_row)
+                {
+                    if (key_pending (edit))
+                        return;
+                    edit_draw_this_line (edit, b, row, start_column, end_column);
+                }
+            }
+        }
+    }
+    else if (prev_curs_row < edit->curs_row)
+    {
+        /* with the new text highlighting, we must draw from the top down */
+        edit_draw_this_char (edit, prev_curs, prev_curs_row, start_column, end_column);
+        edit_draw_this_char (edit, edit->buffer.curs1, edit->curs_row, start_column, end_column);
+    }
+    else
+    {
+        edit_draw_this_char (edit, edit->buffer.curs1, edit->curs_row, start_column, end_column);
+        edit_draw_this_char (edit, prev_curs, prev_curs_row, start_column, end_column);
+    }
+
+    edit->force = 0;
+
+    prev_curs_row = edit->curs_row;
+    prev_curs = edit->buffer.curs1;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static inline void
+edit_render (WEdit * edit, int page, int row_start, int col_start, int row_end, int col_end)
+{
+    if (page != 0)              /* if it was an expose event, 'page' would be set */
+        edit->force |= REDRAW_PAGE | REDRAW_IN_BOUNDS;
+
+    render_edit_text (edit, row_start, col_start, row_end, col_end);
+
+    /*
+     * edit->force != 0 means a key was pending and the redraw
+     * was halted, so next time we must redraw everything in case stuff
+     * was left undrawn from a previous key press.
+     */
+    if (edit->force != 0)
+        edit->force |= REDRAW_PAGE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+void
+edit_status (WEdit * edit, gboolean active)
+{
+    int color;
+
+    if (edit->fullscreen)
+    {
+        color = STATUSBAR_COLOR;
+        edit_status_fullscreen (edit, color);
+    }
+    else
+    {
+        color = edit->drag_state != MCEDIT_DRAG_NONE ? EDITOR_FRAME_DRAG : active ?
+            EDITOR_FRAME_ACTIVE : EDITOR_FRAME;
+        edit_draw_frame (edit, color, active);
+        edit_status_window (edit);
+    }
+
+    edit_draw_window_icons (edit, color);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+/** this scrolls the text so that cursor is on the screen */
+void
+edit_scroll_screen_over_cursor (WEdit * edit)
+{
+    WRect *w = &WIDGET (edit)->rect;
+
+    long p;
+    long outby;
+    int b_extreme, t_extreme, l_extreme, r_extreme;
+
+    if (w->lines <= 0 || w->cols <= 0)
+        return;
+
+    rect_resize (w, -EDIT_TEXT_VERTICAL_OFFSET,
+                 -(EDIT_TEXT_HORIZONTAL_OFFSET + edit_options.line_state_width));
+
+    if (!edit->fullscreen)
+        rect_grow (w, -1, -1);
+
+    r_extreme = EDIT_RIGHT_EXTREME;
+    l_extreme = EDIT_LEFT_EXTREME;
+    b_extreme = EDIT_BOTTOM_EXTREME;
+    t_extreme = EDIT_TOP_EXTREME;
+    if (edit->found_len != 0)
+    {
+        b_extreme = MAX (w->lines / 4, b_extreme);
+        t_extreme = MAX (w->lines / 4, t_extreme);
+    }
+    if (b_extreme + t_extreme + 1 > w->lines)
+    {
+        int n;
+
+        n = b_extreme + t_extreme;
+        if (n == 0)
+            n = 1;
+        b_extreme = (b_extreme * (w->lines - 1)) / n;
+        t_extreme = (t_extreme * (w->lines - 1)) / n;
+    }
+    if (l_extreme + r_extreme + 1 > w->cols)
+    {
+        int n;
+
+        n = l_extreme + r_extreme;
+        if (n == 0)
+            n = 1;
+        l_extreme = (l_extreme * (w->cols - 1)) / n;
+        r_extreme = (r_extreme * (w->cols - 1)) / n;
+    }
+    p = edit_get_col (edit) + edit->over_col;
+    edit_update_curs_row (edit);
+    outby = p + edit->start_col - w->cols + 1 + (r_extreme + edit->found_len);
+    if (outby > 0)
+        edit_scroll_right (edit, outby);
+    outby = l_extreme - p - edit->start_col;
+    if (outby > 0)
+        edit_scroll_left (edit, outby);
+    p = edit->curs_row;
+    outby = p - w->lines + 1 + b_extreme;
+    if (outby > 0)
+        edit_scroll_downward (edit, outby);
+    outby = t_extreme - p;
+    if (outby > 0)
+        edit_scroll_upward (edit, outby);
+    edit_update_curs_row (edit);
+
+    rect_resize (w, EDIT_TEXT_VERTICAL_OFFSET,
+                 EDIT_TEXT_HORIZONTAL_OFFSET + edit_options.line_state_width);
+    if (!edit->fullscreen)
+        rect_grow (w, 1, 1);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+edit_render_keypress (WEdit * edit)
+{
+    edit_render (edit, 0, 0, 0, 0, 0);
+}
+
+/* --------------------------------------------------------------------------------------------- */