editdraw.c

具有IDE功能的编辑器

/* editor text drawing.

   Copyright (C) 1996-2000 the Free Software Foundation

   Authors: 1996, 1997 Paul Sheer

   This program 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 2 of the License, or
   (at your option) any later version.

   This program 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, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307, USA.
*/

#include <config.h>
#include "edit.h"

#define MAX_LINE_LEN 1024

#if ! defined (MIDNIGHT) && ! defined (GTK)
#include "app_glob.c"
#include "coollocal.h"
#include "mad.h"
#endif

extern int column_highlighting;

extern struct look *look;

#if defined (MIDNIGHT) || defined (GTK)

void status_string (WEdit * edit, char *s, int w, int fill, int font_width)
{
#ifdef MIDNIGHT
    int i;
#endif
    char t[160];		/* 160 just to be sure */
/* The field lengths just prevents the status line from shortening to much */
    sprintf (t, "[%c%c%c%c] %2ld:%3ld+%2ld=%3ld/%3ld - *%-4ld/%4ldb=%3d",
	     edit->mark1 != edit->mark2 ? ( column_highlighting ? 'C' : 'B') : '-',
	     edit->modified ? 'M' : '-', edit->macro_i < 0 ? '-' : 'R',
	     edit->overwrite == 0 ? '-' : 'O',
	     edit->curs_col / font_width, edit->start_line + 1, edit->curs_row,
	     edit->curs_line + 1, edit->total_lines + 1, edit->curs1,
	     edit->last_byte, edit->curs1 < edit->last_byte
	     ? edit_get_byte (edit, edit->curs1) : -1);
#ifdef MIDNIGHT
    sprintf (s, "%.*s", w + 1, t);
    i = strlen (s);
    s[i] = ' ';
    i = w;
    do {
	if (strchr ("+-*=/:b", s[i]))	/* chop off the last word/number */
	    break;
	s[i] = fill;
    } while (i--);
    s[i] = fill;
    s[w] = 0;
#else
    strcpy (s, t);
#endif
}

#endif

#ifdef MIDNIGHT

/* how to get as much onto the status line as is numerically possible :) */
void edit_status (WEdit * edit)
{
    int w, i, t;
    char *s;
    w = edit->widget.cols - (edit->have_frame * 2);
    s = malloc (w + 15);
    if (w < 4)
	w = 4;
    memset (s, ' ', w);
    attrset (SELECTED_COLOR);
    if (w > 4) {
	widget_move (edit, edit->have_frame, edit->have_frame);
	i = w > 24 ? 18 : w - 6;
	i = i < 13 ? 13 : i;
	sprintf (s, "%s", (char *) name_trunc (edit->filename ? edit->filename : "", i));
	i += strlen (s);
	s[strlen (s)] = ' ';
	t = w - 20;
	if (t < 0)
	    t = 0;
	status_string (edit, s + 20, t, ' ', 1);
    } else {
	s[w] = 0;
    }
    printw ("%.*s", w, s);
    attrset (NORMAL_COLOR);
    free (s);
}

#else


void render_status (CWidget * wdt, int expose);

#ifdef GTK

void edit_status (WEdit *edit)
{
    GtkEntry *entry;
    int w, i, t;
    char s[160];
    w = edit->num_widget_columns - 1;
    if (w > 150)
	w = 150;
    if (w < 0)
	w = 0;
    memset (s, 0, w);
    if (w > 1) {
	i = w > 24 ? 18 : w - 6;
	i = i < 13 ? 13 : i;
	sprintf (s, "%s", (char *) name_trunc (edit->filename ? edit->filename : "", i));
	i = strlen (s);
	s[i] = ' ';
	s[i + 1] = ' ';
	t = w - i - 2;
	if (t < 0)
	    t = 0;
	status_string (edit, s + i + 2, t, 0, FONT_MEAN_WIDTH);
    }
    s[w] = 0;
    entry = GTK_ENTRY (edit->widget->status);
    if (strcmp (s, gtk_entry_get_text (entry)))
	gtk_entry_set_text (entry, s);
}

#else

void edit_status (WEdit * edit)
{
    static int name_trunc_len = 16;
    int name_trunc_len_inc = 0;
    long start_mark, end_mark;
    CWidget *wdt;
    mode_t m;
    char *p;
    char id[33];
    char s[4096];
    char b[64];
    if (eval_marks (edit, &start_mark, &end_mark))
	end_mark = start_mark = 0;
    if ((COptionsOf (edit->widget) & EDITOR_NO_TEXT))
	return;
    CPushFont ("editor", 0);
    m = edit->stat.st_mode;
    p = edit->filename ? edit->filename : "";
    if (edit->curs1 < edit->last_byte) {
	wchar_t c;
	c = edit_get_wide_byte (edit, edit->curs1) & 0x7FFFFFFFUL;
	sprintf (b, "%3lu/\011%lX\033", (unsigned long) c, (unsigned long) c);
    } else {
	sprintf (b, "\022EOF\033");
    }
    CPushFont ("widget", 0);
    for (;;) {
	int status_text_width;
	sprintf (s,
		 "%s  -rwxrwxrwx  MMMM  %02ld  %-4ld+%2ld=%4ld/%3ld  *%-5ld/%5ldb=%s%c %ld",
		 *p ? (char *) name_trunc (p, name_trunc_len) : _("<unnamed>"),
		 edit->curs_col / FONT_MEAN_WIDTH, edit->start_line + 1, edit->curs_row,
		 edit->curs_line + 1, edit->total_lines + 1, edit->curs1, edit->last_byte, b,
		 end_mark - start_mark && !column_highlighting ? ' ' : '\0', end_mark - start_mark);
	status_text_width = CImageTextWidth (s, strlen (s));
	if (name_trunc_len_inc >= 0)
	    if (status_text_width < CWidthOf (edit->widget) - 13) {
		if (name_trunc_len < strlen (p)) {
		    name_trunc_len++;
		    name_trunc_len_inc = 1;
		    continue;
		}
	    }
	if (name_trunc_len_inc <= 0)
	    if (status_text_width > CWidthOf (edit->widget) - 13) {
		if (name_trunc_len > 16) {
		    name_trunc_len--;
		    name_trunc_len_inc = -1;
		    continue;
		}
	    }
	if (name_trunc_len_inc > 0)
	    name_trunc_len--;
	break;
    }
    CPopFont ();
    sprintf (s,
	     "\034%c%s\033\035  \034-%c%c%c%c%c%c%c%c%c\035  \034%s%s%s%c\035  \034\014%02ld\033\035  \034%-4ld+%2ld=\014%4ld\033/%3ld\035  \034*%-5ld/%5ldb=%s\035%c \034\001%ld\033\035",
	     *p ? '\033' : '\003', *p ? (char *) name_trunc (p, name_trunc_len) : _("<unnamed>"),
	     m & S_IRUSR ? 'r' : '-',
	     m & S_IWUSR ? 'w' : '-',
	     m & S_IXUSR ? 'x' : '-',
	     m & S_IRGRP ? 'r' : '-',
	     m & S_IWGRP ? 'w' : '-',
	     m & S_IXGRP ? 'x' : '-',
	     m & S_IROTH ? 'r' : '-',
	     m & S_IWOTH ? 'w' : '-',
	     m & S_IXOTH ? 'x' : '-',
	     end_mark - start_mark || (edit->mark2 == -1
				       && !edit->highlight) ? (column_highlighting ? "\032C\033" :
							       "\001B\033") : "-",
	     edit->modified ? "\012M\033" : "-", edit->macro_i < 0 ? "-" : "\023R\033",
	     edit->overwrite == 0 ? '-' : 'O', edit->curs_col / FONT_MEAN_WIDTH,
	     edit->start_line + 1, edit->curs_row, edit->curs_line + 1, edit->total_lines + 1,
	     edit->curs1, edit->last_byte, b, end_mark - start_mark
	     && !column_highlighting ? ' ' : '\0', end_mark - start_mark);
    strcpy (id, CIdentOf (edit->widget));
    strcat (id, ".text");
    wdt = CIdent (id);
    free (wdt->text);
    wdt->text = (char *) strdup (s);
    CSetWidgetSize (id, CWidthOf (edit->widget), CHeightOf (wdt));
    render_status (wdt, 0);
    CPopFont ();
}

#endif

#endif


/* boolean */
int cursor_in_screen (WEdit * edit, long row)
{
    if (row < 0 || row >= edit->num_widget_lines)
	return 0;
    else
	return 1;
}

/* returns rows from the first displayed line to the cursor */
int cursor_from_display_top (WEdit * edit)
{
    if (edit->curs1 < edit->start_display)
	return -edit_move_forward (edit, edit->curs1, 0, edit->start_display);
    else
	return edit_move_forward (edit, edit->start_display, 0, edit->curs1);
}

/* returns how far the cursor is out of the screen */
int cursor_out_of_screen (WEdit * edit)
{
    int row = cursor_from_display_top (edit);
    if (row >= edit->num_widget_lines)
	return row - edit->num_widget_lines + 1;
    if (row < 0)
	return row;
    return 0;
}

#ifndef MIDNIGHT
int edit_width_of_long_printable (int c);
#endif

/* this scrolls the text so that cursor is on the screen */
void edit_scroll_screen_over_cursor (WEdit * edit)
{
    int p;
    int outby;
    int b_extreme, t_extreme, l_extreme, r_extreme;
    r_extreme = EDIT_RIGHT_EXTREME;
    l_extreme = EDIT_LEFT_EXTREME;
    b_extreme = EDIT_BOTTOM_EXTREME;
    t_extreme = EDIT_TOP_EXTREME;
    if (edit->found_len) {
	b_extreme = max (edit->num_widget_lines / 4, b_extreme);
	t_extreme = max (edit->num_widget_lines / 4, t_extreme);
    }
    if (b_extreme + t_extreme + 1 > edit->num_widget_lines) {
	int n;
	n = b_extreme + t_extreme;
	b_extreme = (b_extreme * (edit->num_widget_lines - 1)) / n;
	t_extreme = (t_extreme * (edit->num_widget_lines - 1)) / n;
    }
    if (l_extreme + r_extreme + 1 > edit->num_widget_columns) {
	int n;
	n = l_extreme + t_extreme;
	l_extreme = (l_extreme * (edit->num_widget_columns - 1)) / n;
	r_extreme = (r_extreme * (edit->num_widget_columns - 1)) / n;
    }
    p = edit_get_col (edit);
    edit_update_curs_row (edit);
#ifdef MIDNIGHT
    outby = p + edit->start_col - edit->num_widget_columns + 1 + (r_extreme + edit->found_len);
#else
    outby = p + edit->start_col - CWidthOf (edit->widget) + 7 + (r_extreme + edit->found_len) * FONT_MEAN_WIDTH + edit_width_of_long_printable (edit_get_byte (edit, edit->curs1));
#endif
    if (outby > 0)
	edit_scroll_right (edit, outby);
#ifdef MIDNIGHT
    outby = l_extreme - p - edit->start_col;
#else
    outby = l_extreme * FONT_MEAN_WIDTH - p - edit->start_col;
#endif
    if (outby > 0)
	edit_scroll_left (edit, outby);
    p = edit->curs_row;
    outby = p - edit->num_widget_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);
}


#ifndef MIDNIGHT

#define CACHE_WIDTH 256
#define CACHE_HEIGHT 128

int EditExposeRedraw = 0;
int EditClear = 0;

/* background colors: marked is refers to mouse highlighting, highlighted refers to a found string. */
unsigned long edit_abnormal_color, edit_marked_abnormal_color;
unsigned long edit_highlighted_color, edit_marked_color;
unsigned long edit_normal_background_color;

/* foreground colors */
unsigned long edit_normal_foreground_color, edit_bold_color;
unsigned long edit_italic_color;

/* cursor color */
unsigned long edit_cursor_color;

void edit_set_foreground_colors (unsigned long normal, unsigned long bold, unsigned long italic)
{
    edit_normal_foreground_color = normal;
    edit_bold_color = bold;
    edit_italic_color = italic;
}

void edit_set_background_colors (unsigned long normal, unsigned long abnormal, unsigned long marked, unsigned long marked_abnormal, unsigned long highlighted)
{
    edit_abnormal_color = abnormal;
    edit_marked_abnormal_color = marked_abnormal;
    edit_marked_color = marked;
    edit_highlighted_color = highlighted;
    edit_normal_background_color = normal;
}

void edit_set_cursor_color (unsigned long c)
{
    edit_cursor_color = c;
}

#else

static void set_color (int font)
{
    attrset (font);
}

#define edit_move(x,y) widget_move(edit, y, x);

static void print_to_widget (WEdit * edit, long row, int start_col, float start_col_real, long end_col, unsigned int line[])
{
    int x = (float) start_col_real + EDIT_TEXT_HORIZONTAL_OFFSET;
    int x1 = start_col + EDIT_TEXT_HORIZONTAL_OFFSET;
    int y = row + EDIT_TEXT_VERTICAL_OFFSET;

    set_color (EDITOR_NORMAL_COLOR);
    edit_move (x1, y);
    hline (' ', end_col + 1 - EDIT_TEXT_HORIZONTAL_OFFSET - x1);

    edit_move (x + FONT_OFFSET_X, y + FONT_OFFSET_Y);
    {
	unsigned int *p = line;
	int textchar = ' ';
	long style;

	while (*p) {
	    style = *p >> 8;
	    textchar = *p & 0xFF;
#ifdef HAVE_SYNTAXH
	    if (!(style & (0xFF - MOD_ABNORMAL - MOD_CURSOR)))
		SLsmg_set_color ((*p & 0x007F0000) >> 16);
#endif
	    if (style & MOD_ABNORMAL)
		textchar = '.';
	    if (style & MOD_HIGHLIGHTED) {
		set_color (EDITOR_BOLD_COLOR);
	    } else if (style & MOD_MARKED) {
		set_color (EDITOR_MARKED_COLOR);
	    }
	    if (style & MOD_UNDERLINED) {
		set_color (EDITOR_UNDERLINED_COLOR);
	    }
	    if (style & MOD_BOLD) {
		set_color (EDITOR_BOLD_COLOR);
	    }
	    addch (textchar);
	    p++;
	}
    }
}

/* b pointer to begining of line */
static void edit_draw_this_line (WEdit * edit, long b, long row, long start_col, long end_col)
{
    static unsigned int line[MAX_LINE_LEN];
    unsigned int *p = line;
    long m1 = 0, m2 = 0, q, c1, c2;
    int col, start_col_real;
    unsigned int c;
    int fg, bg;
    int i, book_mark = -1;

#if 0
    if (!book_mark_query (edit, edit->start_line + row, &book_mark))
	book_mark = -1;
#endif

    edit_get_syntax_color (edit, b - 1, &fg, &bg);
    q = edit_move_forward3 (edit, b, start_col - edit->start_col, 0);
    start_col_real = (col = (int) edit_move_forward3 (edit, b, 0, q)) + edit->start_col;
    c1 = min (edit->column1, edit->column2);
    c2 = max (edit->column1, edit->column2);

    if (col + 16 > -edit->start_col) {
	eval_marks (edit, &m1, &m2);

	if (row <= edit->total_lines - edit->start_line) {