/****************************************************************************
- * Copyright (c) 2007-2015,2017 Free Software Foundation, Inc. *
+ * Copyright (c) 2007-2017,2018 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* authorization. *
****************************************************************************/
/*
- * $Id: savescreen.c,v 1.36 2017/10/20 21:20:34 tom Exp $
+ * $Id: savescreen.c,v 1.53 2018/05/12 15:11:16 tom Exp $
*
* Demonstrate save/restore functions from the curses library.
* Thomas Dickey - 2007/7/14
#include <test.priv.h>
#include <popup_msg.h>
+#include <parse_rgb.h>
#if HAVE_SCR_DUMP
#define MyMarker ACS_DIAMOND
#endif
+#define MAX_ANSI 8
+
static bool use_init = FALSE;
static bool keep_dumps = FALSE;
BaseChar(cchar_t data)
{
wchar_t my_wchar[CCHARW_MAX];
+ wchar_t result = 0;
attr_t my_attr;
short my_pair;
- getcchar(&data, my_wchar, &my_attr, &my_pair, NULL);
- return my_wchar[0];
+ if (getcchar(&data, my_wchar, &my_attr, &my_pair, NULL) == OK)
+ result = my_wchar[0];
+ return result;
}
#endif
}
static void
-show_what(int which, int last)
+show_what(int color, int which, int last)
{
int y, x, n;
time_t now;
getyx(stdscr, y, x);
move(0, 0);
- printw("Saved %d of %d (? for help)", which, last + 1);
+ printw("Color %d. Saved %d of %d (? for help)", color, which, last + 1);
now = time((time_t *) 0);
mytime = ctime(&now);
}
static int
-get_command(int which, int last)
+get_command(int color, int which, int last)
{
int ch;
timeout(50);
do {
- show_what(which, last);
+ show_what(color, which, last);
ch = getch();
} while (ch == ERR);
return ch;
}
+static int
+dump_screen(char **files, int color, int which, int last, bool use_colors)
+{
+#if USE_WIDEC_SUPPORT
+ cchar_t mycc;
+ int myxx;
+#endif
+ char *filename = files[which];
+ bool dumped = FALSE;
+
+ if (filename != 0) {
+ dumped = TRUE;
+ show_what(color, ++which, last);
+ if (scr_dump(filename) == ERR) {
+ endwin();
+ printf("Cannot write screen-dump %s\n", filename);
+ cleanup(files);
+ ExitProgram(EXIT_SUCCESS);
+ }
+ if (use_colors) {
+ int cx, cy;
+ int pair = 1 + (which % MAX_ANSI);
+ /*
+ * Change the background color, to make it more obvious. But that
+ * changes the existing text-color. Copy the old values from the
+ * currently displayed screen.
+ */
+ bkgd((chtype) COLOR_PAIR(pair));
+ for (cy = 1; cy < LINES; ++cy) {
+ for (cx = 0; cx < COLS; ++cx) {
+ wmove(curscr, cy, cx);
+ wmove(stdscr, cy, cx);
+#if USE_WIDEC_SUPPORT
+ if (win_wch(curscr, &mycc) != ERR) {
+ myxx = wcwidth(BaseChar(mycc));
+ if (myxx > 0) {
+ wadd_wchnstr(stdscr, &mycc, 1);
+ cx += (myxx - 1);
+ }
+ }
+#else
+ waddch(stdscr, winch(curscr));
+#endif
+ }
+ }
+ }
+ }
+ return dumped;
+}
+
static void
editor_help(void)
{
int ch;
int which = 0;
int last;
+ bool use_colors = FALSE;
bool replaying = FALSE;
bool done = FALSE;
char **files;
char *fill_by = 0;
#if USE_WIDEC_SUPPORT
+ int r, g, b;
+ int cube = 0;
+ int cube0 = 16;
+ int cube1;
cchar_t mycc;
- int myxx;
+ static const wchar_t mywc[2] =
+ {L'#', 0};
+ bool using_rgb = FALSE;
#endif
setlocale(LC_ALL, "");
noecho();
keypad(stdscr, TRUE);
curs_set(0);
- if (has_colors()) {
- short pair;
- short color;
- start_color();
+ if (has_colors() && (start_color() == OK) && COLORS >= MAX_ANSI) {
+ static const struct {
+ int fg, bg;
+ } table[MAX_ANSI] = {
+#define DATA(fg,bg) { COLOR_##fg, COLOR_##bg }
+ DATA(RED, WHITE),
+ DATA(GREEN, WHITE),
+ DATA(YELLOW, BLACK),
+ DATA(BLUE, WHITE),
+ DATA(MAGENTA, WHITE),
+ DATA(MAGENTA, BLACK),
+ DATA(CYAN, WHITE),
+ DATA(CYAN, BLACK),
+#undef DATA
+ };
+ int n;
+ int pair = 1;
+
+ use_colors = TRUE;
/*
- * Assume pairs is the square of colors, and assign pairs going down
- * so that there is minimal conflict with the background color (which
- * counts up). The intent is just to show how color pair values are
- * saved and restored.
+ * Discounting color-pair 0 (no color), make the next 8 color pairs
+ * useful for leaving a visually distinct trail of characters on the
+ * screen.
*/
- for (pair = 0; pair < COLOR_PAIRS; ++pair) {
- color = (short) (pair % (COLORS - 1));
- init_pair(pair, (short) (COLOR_WHITE - color), color);
+ for (n = 0; n < MAX_ANSI; ++n) {
+ init_pair((short) pair++, (short) table[n].fg, (short) table[n].bg);
+ }
+ /*
+ * After that, use color pairs for constructing a test-pattern, e.g.,
+ * imitating xterm's scripts.
+ */
+ if (fill_by == 0) {
+ if (COLORS <= 256) {
+ for (n = 0; n < COLORS; ++n)
+ init_pair((short) (n + MAX_ANSI), (short) n, (short) n);
+ }
+#if HAVE_TIGETSTR && USE_WIDEC_SUPPORT
+ else {
+ int r_max, g_max, b_max;
+
+ if (parse_rgb(&r_max, &g_max, &b_max) > 0) {
+ int rows = LINES - 1;
+ int cols = COLS - 1;
+ int b_delta = (b_max / rows);
+ int r_delta = (r_max / cols);
+ int g_delta = (g_max / cols);
+ int row = 0;
+
+ b = 0;
+ using_rgb = TRUE;
+ while (row++ < rows) {
+ int col = 0;
+ r = 0;
+ g = g_max;
+ while (col++ < cols) {
+ int color = (((r * (g_max + 1)) + g) * (b_max + 1)
+ + b + MAX_ANSI);
+#if HAVE_INIT_EXTENDED_COLOR
+ init_extended_pair(pair, color, color);
+#else
+ init_pair(pair, color, color);
+#endif
+ pair++;
+ r += r_delta;
+ g -= g_delta;
+ }
+ b += b_delta;
+ }
+ }
+ }
+#endif
+ }
+ if ((fill_by == 0) && !replaying) {
+ /*
+ * Originally (before wide-characters) ncurses supported 16 colors.
+ */
+ if (COLORS >= 16 && COLORS <= 256) {
+ mvprintw(2, 0, "System colors:\n");
+ for (n = 0; n < 16; ++n) {
+ pair = n + MAX_ANSI;
+ addch((chtype) (' ' | COLOR_PAIR(pair)));
+ addch((chtype) (' ' | COLOR_PAIR(pair)));
+ if (((n + 1) % 8) == 0)
+ addch('\n');
+ }
+ }
+ /*
+ * Even with ncurses, you need wide-character support to have more
+ * than 16 colors.
+ */
+#if USE_WIDEC_SUPPORT
+ if (COLORS == 88) {
+ cube = 4;
+ } else if (COLORS == 256) {
+ cube = 6;
+ }
+ if (cube != 0) {
+ cube0 = 16;
+ cube1 = cube0 + (cube * cube * cube);
+
+ addch('\n');
+ printw("Color cube, %dx%dx%d:\n", cube, cube, cube);
+ for (g = 0; g < cube; g++) {
+ for (r = 0; r < cube; r++) {
+ for (b = 0; b < cube; b++) {
+ pair = MAX_ANSI
+ + 16
+ + (r * cube * cube) + (g * cube) + b;
+ setcchar(&mycc, mywc, 0, (short) pair, NULL);
+ add_wch(&mycc);
+ add_wch(&mycc);
+ }
+ addch(' ');
+ }
+ addch('\n');
+ }
+ addch('\n');
+ printw("Grayscale ramp:\n");
+ for (n = cube1; n < COLORS; ++n) {
+ pair = n + MAX_ANSI;
+ setcchar(&mycc, mywc, 0, (short) pair, NULL);
+ add_wch(&mycc);
+ add_wch(&mycc);
+ }
+ } else if ((COLORS > 256) && using_rgb) {
+ int rows = LINES - 1;
+ int cols = COLS - 1;
+ int row = 0;
+
+ b = 0;
+ pair = MAX_ANSI;
+ while (row++ < rows) {
+ int col = 0;
+ while (col++ < cols) {
+ setcchar(&mycc, mywc, 0, (short) pair, &pair);
+ add_wch(&mycc);
+ ++pair;
+ }
+ addch('\n');
+ }
+ addch('\n');
+ }
+#endif
}
}
int x = 0;
int color = 0;
int altchars = 0;
+ bool dirty = use_colors || (fill_by != 0);
while (!done) {
- switch (get_command(which, last)) {
+ switch (get_command(color, which, last)) {
case 'n':
+ if (dirty && files[which]) {
+ dump_screen(files, color, which, last, use_colors);
+ }
setup_next();
done = TRUE;
break;
done = TRUE;
break;
case ' ':
- if (files[which] != 0) {
- show_what(which + 1, last);
- if (scr_dump(files[which]) == ERR) {
- endwin();
- printf("Cannot write screen-dump %s\n", files[which]);
- cleanup(files);
- done = TRUE;
- break;
- }
- ++which;
- if (has_colors()) {
- int cx, cy;
- short pair = (short) (which % COLOR_PAIRS);
- /*
- * Change the background color, to make it more
- * obvious. But that changes the existing text-color.
- * Copy the old values from the currently displayed
- * screen.
- */
- bkgd((chtype) COLOR_PAIR(pair));
- for (cy = 1; cy < LINES; ++cy) {
- for (cx = 0; cx < COLS; ++cx) {
- wmove(curscr, cy, cx);
- wmove(stdscr, cy, cx);
-#if USE_WIDEC_SUPPORT
- if (win_wch(curscr, &mycc) != ERR) {
- myxx = wcwidth(BaseChar(mycc));
- if (myxx > 0) {
- wadd_wchnstr(stdscr, &mycc, 1);
- cx += (myxx - 1);
- }
- }
-#else
- waddch(stdscr, winch(curscr));
-#endif
- }
- }
- }
+ if (dump_screen(files, color, which, last, use_colors)) {
+ which = (which + 1) % MAX_ANSI;
+ dirty = FALSE;
} else {
- beep();
+ setup_next();
+ done = TRUE;
}
break;
case KEY_LEFT:
altchars = !altchars;
break;
case 'c':
- color = (color + 1) % COLORS;
+ if (use_colors) {
+ color = (color + 1) % MAX_ANSI;
+ }
break;
case HELP_KEY_1:
editor_help();
continue;
}
if (!done) {
- chtype attr = (A_REVERSE | (chtype) COLOR_PAIR(color * COLORS));
+ chtype attr = A_REVERSE;
chtype ch2 = (altchars ? MyMarker : '#');
+ if (use_colors) {
+ attr |= (chtype) COLOR_PAIR(color);
+ }
move(y, x);
AddCh(ch2 | attr);
move(y, x);
+ dirty = TRUE;
}
}
endwin();
projects / ncurses.git / blobdiff