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Add colour checking

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This commit is contained in:
Přemysl Eric Janouch 2020-09-12 23:16:56 +02:00
parent 0c33532611
commit 745c16704a
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 29 additions and 8 deletions
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37
termtest.c
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@ -39,6 +39,8 @@
#define ST8 "\x9c"
#define BEL "\x07"
#define SGR0 CSI "m"
extern char **environ;
static struct termios saved_termios;
struct winsize ws;
@ -153,6 +155,17 @@ static void test_mouse(int mode) {
comm("Waiting for button up events, press a key if hanging.\n", true);
}
// colour prints a cell with the given indexed colour as a background.
static void colour(int n) {
n > 7 ? printf(CSI "48;5;%dm ", n) : printf(CSI "%dm ", 40 + n);
}
// direct prints a cell with the given direct colour as a background.
// sep can be set either to ':' for ISO-8613-6 or ';' for more compatibility.
static void direct(char sep, int r, int g, int b) {
printf(CSI "48%c2%c%d%c%d%c%dm ", sep, sep, r, sep, g, sep, b);
}
int main(int argc, char *argv[]) {
if (!tty_cbreak())
abort();
@ -186,6 +199,10 @@ int main(int argc, char *argv[]) {
printf("%d\n", decrqm_supported);
printf("-- Colours\n");
start_color(); // Does this need initscr()? ncurses doesn't initialise.
printf("Terminfo: %d colours, has_colors=%d\n",
tigetnum("colors"), has_colors());
char *colorterm = getenv("COLORTERM");
if (colorterm) {
printf("COLORTERM=%s", colorterm);
@ -200,9 +217,13 @@ int main(int argc, char *argv[]) {
if (Tc && Tc != (char *)-1)
printf("Terminfo: tmux extension claims direct color.\n");
// TODO:
// - terminfo
// - hardcoded visual check
for (int n = 0; n < 8; n++) colour(n); printf(SGR0 "\n");
for (int n = 8; n < 16; n++) colour(n); printf(SGR0 "\n");
for (int n = 232; n < 256; n++) colour(n); printf(SGR0 "\n");
// Ideally, both ramps should be visible, and smooth.
for (int g = 255; g >= 192; g--) direct(';', 255, g, 0); printf(SGR0 "\n");
for (int g = 255; g >= 192; g--) direct(':', 255, g, 0); printf(SGR0 "\n");
printf("-- Colour change\n");
// TODO:
@ -230,11 +251,11 @@ int main(int argc, char *argv[]) {
printf("\n");
}
printf(CSI "0;32;44m" "SGR" CSI "m ");
printf(CSI "1;32;44m" "Bold" CSI "m ");
printf(CSI "5;32;44m" "Blink" CSI "m ");
printf(CSI "0;32;44m" "SGR" SGR0 " ");
printf(CSI "1;32;44m" "Bold" SGR0 " ");
printf(CSI "5;32;44m" "Blink" SGR0 " ");
printf("\n");
printf(CSI "0;5m" "Blink with default colours." CSI "m");
printf(CSI "0;5m" "Blink with default colours." SGR0);
printf("\n");
printf("-- Italic attribute\n");
@ -242,7 +263,7 @@ int main(int argc, char *argv[]) {
printf("Terminfo: %d\n", italic_supported);
if (italic_supported)
printf("%sTerminfo test.%s\n", enter_italics_mode, exit_italics_mode);
printf(CSI "3m" "SGR test.\n" CSI "0m");
printf(CSI "3m" "SGR test.\n" SGR0);
printf("-- Bar cursor\n");
const char *Ss = tigetstr("Ss");