71 lines
3.0 KiB
Rust
71 lines
3.0 KiB
Rust
use std::collections::BTreeMap;
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use super::Builtin;
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use crate::common::QuoteKind;
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use crate::units::Unit;
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use crate::value::{Number, Value};
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pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
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decl!(f "alpha", |args, _| {
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match arg!(args, 0, "color") {
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Value::Color(c) => Some(Value::Dimension(c.alpha() / Number::from(255), Unit::None)),
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_ => todo!("non-color given to builtin function `alpha()`")
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}
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});
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decl!(f "opacity", |args, _| {
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match arg!(args, 0, "color") {
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Value::Color(c) => Some(Value::Dimension(c.alpha() / Number::from(255), Unit::None)),
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Value::Dimension(num, unit) => Some(Value::Ident(format!("opacity({}{})", num , unit), QuoteKind::None)),
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_ => todo!("non-color given to builtin function `opacity()`")
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}
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});
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decl!(f "opacify", |args, _| {
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let color = match arg!(args, 0, "color").eval() {
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Value::Color(c) => c,
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_ => todo!("non-color given to builtin function `opacify()`")
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};
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let amount = match arg!(args, 1, "amount").eval() {
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Value::Dimension(n, Unit::None) => n,
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Value::Dimension(n, Unit::Percent) => n / Number::from(100),
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_ => todo!("expected either unitless or % number for amount"),
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};
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Some(Value::Color(color.fade_in(amount)))
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});
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decl!(f "fade-in", |args, _| {
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let color = match arg!(args, 0, "color").eval() {
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Value::Color(c) => c,
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_ => todo!("non-color given to builtin function `fade-in()`")
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};
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let amount = match arg!(args, 1, "amount").eval() {
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Value::Dimension(n, Unit::None) => n,
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Value::Dimension(n, Unit::Percent) => n / Number::from(100),
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_ => todo!("expected either unitless or % number for amount"),
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};
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Some(Value::Color(color.fade_in(amount)))
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});
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decl!(f "transparentize", |args, _| {
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let color = match arg!(args, 0, "color").eval() {
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Value::Color(c) => c,
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_ => todo!("non-color given to builtin function `transparentize()`")
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};
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let amount = match arg!(args, 1, "amount").eval() {
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Value::Dimension(n, Unit::None) => n,
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Value::Dimension(n, Unit::Percent) => n / Number::from(100),
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_ => todo!("expected either unitless or % number for amount"),
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};
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Some(Value::Color(color.fade_out(amount)))
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});
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decl!(f "fade-out", |args, _| {
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let color = match arg!(args, 0, "color").eval() {
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Value::Color(c) => c,
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_ => todo!("non-color given to builtin function `fade-out()`")
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};
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let amount = match arg!(args, 1, "amount").eval() {
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Value::Dimension(n, Unit::None) => n,
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Value::Dimension(n, Unit::Percent) => n / Number::from(100),
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_ => todo!("expected either unitless or % number for amount"),
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};
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Some(Value::Color(color.fade_out(amount)))
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});
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}
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