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Break the colour palette into a struct rather than just a single array

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and use that to support the OSC palette-setting sequences in popups.
Also add a pane-colours array option to specify the defaults. GitHub
issue 2815.
This commit is contained in:
nicm
2021-08-11 20:49:55 +00:00
parent 01fd4b997e
commit 7eea3d7ab8
12 changed files with 352 additions and 239 deletions
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112
colour.c
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@@ -944,3 +944,115 @@ colour_byname(const char *name)
}
return (-1);
}
/* Initialize palette. */
void
colour_palette_init(struct colour_palette *p)
{
p->fg = 8;
p->bg = 8;
p->palette = NULL;
p->default_palette = NULL;
}
/* Clear palette. */
void
colour_palette_clear(struct colour_palette *p)
{
p->fg = 8;
p->bg = 8;
if (p != NULL) {
free(p->palette);
p->palette = NULL;
}
}
/* Free a palette. */
void
colour_palette_free(struct colour_palette *p)
{
if (p != NULL) {
free(p->palette);
p->palette = NULL;
free(p->default_palette);
p->default_palette = NULL;
}
}
/* Get a colour from a palette. */
int
colour_palette_get(struct colour_palette *p, int c)
{
if (p == NULL)
return (-1);
if (c >= 90 && c <= 97)
c = 8 + c - 90;
else if (c & COLOUR_FLAG_256)
c &= ~COLOUR_FLAG_256;
else if (c >= 8)
return (-1);
if (p->palette != NULL && p->palette[c] != -1)
return (p->palette[c]);
if (p->default_palette != NULL && p->default_palette[c] != -1)
return (p->default_palette[c]);
return (-1);
}
/* Set a colour in a palette. */
int
colour_palette_set(struct colour_palette *p, int n, int c)
{
u_int i;
if (p == NULL || n > 255)
return (0);
if (c == -1 && p->palette == NULL)
return (0);
if (c != -1 && p->palette == NULL) {
if (p->palette == NULL)
p->palette = xcalloc(256, sizeof *p->palette);
for (i = 0; i < 256; i++)
p->palette[i] = -1;
}
p->palette[n] = c;
return (1);
}
/* Build palette defaults from an option. */
void
colour_palette_from_option(struct colour_palette *p, struct options *oo)
{
struct options_entry *o;
struct options_array_item *a;
u_int i, n;
int c;
if (p == NULL)
return;
o = options_get(oo, "pane-colours");
if ((a = options_array_first(o)) == NULL) {
if (p->default_palette != NULL) {
free(p->default_palette);
p->default_palette = NULL;
}
return;
}
if (p->default_palette == NULL)
p->default_palette = xcalloc(256, sizeof *p->default_palette);
for (i = 0; i < 256; i++)
p->default_palette[i] = -1;
while (a != NULL) {
n = options_array_item_index(a);
if (n < 256) {
c = options_array_item_value(a)->number;
p->default_palette[n] = c;
}
a = options_array_next(a);
}
}