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Support for DCS status and capabilities reporting codes

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Kovid Goyal
2017-12-02 14:35:06 +05:30
parent c12bce3d2f
commit b9798c74d4
8 changed files with 197 additions and 92 deletions
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119
kitty/cursor.c
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@@ -39,11 +39,128 @@ repr(Cursor *self) {
);
}
void cursor_reset_display_attrs(Cursor *self) {
void
cursor_reset_display_attrs(Cursor *self) {
self->bg = 0; self->fg = 0; self->decoration_fg = 0;
self->decoration = 0; self->bold = false; self->italic = false; self->reverse = false; self->strikethrough = false;
}
void
cursor_from_sgr(Cursor *self, unsigned int *params, unsigned int count) {
#define SET_COLOR(which) \
if (i < count) { \
attr = params[i++];\
switch(attr) { \
case 5: \
if (i < count) \
self->which = (params[i++] & 0xFF) << 8 | 1; \
break; \
case 2: \
if (i < count - 2) { \
r = params[i++] & 0xFF; \
g = params[i++] & 0xFF; \
b = params[i++] & 0xFF; \
self->which = r << 24 | g << 16 | b << 8 | 2; \
}\
break; \
} \
} \
break;
unsigned int i = 0, attr;
uint8_t r, g, b;
if (!count) { params[0] = 0; count = 1; }
while (i < count) {
attr = params[i++];
switch(attr) {
case 0:
cursor_reset_display_attrs(self); break;
case 1:
self->bold = true; break;
case 3:
self->italic = true; break;
case 4:
self->decoration = 1; break;
case UNDERCURL_CODE:
self->decoration = 2; break;
case 7:
self->reverse = true; break;
case 9:
self->strikethrough = true; break;
case 22:
self->bold = false; break;
case 23:
self->italic = false; break;
case 24:
self->decoration = 0; break;
case 27:
self->reverse = false; break;
case 29:
self->strikethrough = false; break;
START_ALLOW_CASE_RANGE
case 30 ... 37:
self->fg = ((attr - 30) << 8) | 1; break;
case 38:
SET_COLOR(fg);
case 39:
self->fg = 0; break;
case 40 ... 47:
self->bg = ((attr - 40) << 8) | 1; break;
case 48:
SET_COLOR(bg);
case 49:
self->bg = 0; break;
case 90 ... 97:
self->fg = ((attr - 90 + 8) << 8) | 1; break;
case 100 ... 107:
self->bg = ((attr - 100 + 8) << 8) | 1; break;
END_ALLOW_CASE_RANGE
case DECORATION_FG_CODE:
SET_COLOR(decoration_fg);
case DECORATION_FG_CODE + 1:
self->decoration_fg = 0; break;
}
}
}
static inline int
color_as_sgr(char *buf, size_t sz, unsigned long val, unsigned simple_code, unsigned aix_code, unsigned complex_code) {
switch(val & 0xff) {
case 1:
val >>= 8;
if (val < 16 && simple_code) {
return snprintf(buf, sz, "%ld;", (val < 8) ? simple_code + val : aix_code + (val - 8));
}
return snprintf(buf, sz, "%d:5:%ld;", complex_code, val);
case 2:
return snprintf(buf, sz, "%d:2:%ld:%ld:%ld;", complex_code, (val >> 24) & 0xff, (val >> 16) & 0xff, (val >> 8) & 0xff);
default:
return 0;
}
}
const char*
cursor_as_sgr(Cursor *self) {
static char buf[128], *p;
#define SZ sizeof(buf) - (p - buf) - 2
#define P(fmt, ...) { p += snprintf(p, SZ, fmt ";", __VA_ARGS__); }
p = buf;
if (self->bold) P("%d", 1);
if (self->italic) P("%d", 3);
if (self->reverse) P("%d", 7);
if (self->strikethrough) P("%d", 9);
if (self->decoration) P("%d", self->decoration == 1 ? 4 : UNDERCURL_CODE);
if (self->fg) p += color_as_sgr(p, SZ, self->fg, 30, 90, 38);
if (self->bg) p += color_as_sgr(p, SZ, self->bg, 40, 100, 48);
if (self->decoration_fg) p += color_as_sgr(p, SZ, self->decoration_fg, 0, 0, DECORATION_FG_CODE);
#undef P
#undef SZ
if (p > buf) *(p - 1) = 0; // remove trailing semi-colon
else *(p++) = '0'; // no formatting
*p = 0; // ensure string is null-terminated
return buf;
}
static PyObject *
reset_display_attrs(Cursor *self) {
#define reset_display_attrs_doc "Reset all display attributes to unset"