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optional alpha channel in color properties

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This commit is contained in:
Alessandro Mauri 2025-10-12 13:19:49 +02:00
parent 884105a4e2
commit 34d078b524
2 changed files with 10 additions and 8 deletions
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16
lib/ugui.c3l/src/style.c3
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@ -27,11 +27,11 @@ const Style DEFAULT_STYLE = {
.radius = 0, .radius = 0,
.size = 16, .size = 16,
.bg = 0x282828ffu.@to_rgba(), .bg = 0x282828ffu.@to_rgba(),
.fg = 0xfbf1c7ffu.@to_rgba(), .fg = 0xfbf1c7ffu.@to_rgba(),
.primary = 0xcc241dffu.@to_rgba(), .primary = 0xcc241dffu.@to_rgba(),
.secondary = 0x458588ffu.@to_rgba(), .secondary = 0x458588ffu.@to_rgba(),
.accent = 0xfabd2fffu.@to_rgba(), .accent = 0xfabd2fffu.@to_rgba(),
}; };
// style is stored in a hashmap, each style has an Id that can be generated by a string or whatever // style is stored in a hashmap, each style has an Id that can be generated by a string or whatever
@ -211,14 +211,16 @@ fn Token Lexer.next_token(&lex)
while (ascii::is_alnum_m(lex.peep())) { while (ascii::is_alnum_m(lex.peep())) {
if (lex.advance() == 0) { t.type = INVALID; break; } if (lex.advance() == 0) { t.type = INVALID; break; }
} }
if (lex.off - hex_start != 8) { usz h_len = lex.off - hex_start;
io::eprintfn("CSS lexing error at %d:%d: the only suppported color format is #RRGGBBAA", t.line, t.col); if (h_len != 8 && h_len != 6) {
io::eprintfn("CSS lexing error at %d:%d: the only suppported color formats are #RRGGBBAA or #RRGGBB", t.line, t.col);
t.type = INVALID; t.type = INVALID;
break; break;
} }
char[10] hex_str = (char[])"0x"; char[10] hex_str = (char[])"0x";
hex_str[2..] = lex.text[hex_start..lex.off-1]; hex_str[2:h_len] = lex.text[hex_start:h_len];
if (h_len == 6) hex_str[8..9] = "ff"[..];
uint? color_hex = ((String)hex_str[..]).to_uint(); uint? color_hex = ((String)hex_str[..]).to_uint();
if (catch color_hex) { if (catch color_hex) {
t.type = INVALID; t.type = INVALID;

2
resources/style.css
View File

@ -1,5 +1,5 @@
div { div {
bg: #282828ff; bg: #282828;
fg: #fbf1c7ff; fg: #fbf1c7ff;
primary: #cc241dff; primary: #cc241dff;
secondary: #6c19ca8f; secondary: #6c19ca8f;