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|
use crate::config::Config;
use crate::i3bar_protocol::{Block, MinWidth};
use crate::text::{self, ComputedText};
#[derive(Default)]
pub struct BlocksCache {
computed: Vec<ComputedBlock>,
}
pub struct ComputedBlock {
pub block: Block,
pub full: ComputedText,
pub short: Option<ComputedText>,
pub min_width: Option<f64>,
}
impl BlocksCache {
pub fn process_new_blocks(&mut self, config: &Config, blocks: &[Block]) {
let comp_min_width = |block: &Block| {
let markup = block.markup.as_deref() == Some("pango");
match &block.min_width {
Some(MinWidth::Pixels(p)) => Some(*p as f64),
Some(MinWidth::Text(t)) => Some(text::width_of(t, markup, &config.font.0)),
None => None,
}
};
let comp_full = |block: &Block, min_width: Option<f64>| {
let markup = block.markup.as_deref() == Some("pango");
text::ComputedText::new(
&block.full_text,
text::Attributes {
font: &config.font,
padding_left: 0.0,
padding_right: 0.0,
min_width,
align: block.align.unwrap_or_default(),
markup,
},
)
};
let comp_short = |block: &Block, min_width: Option<f64>| {
let markup = block.markup.as_deref() == Some("pango");
block.short_text.as_ref().map(|short_text| {
text::ComputedText::new(
short_text,
text::Attributes {
font: &config.font,
padding_left: 0.0,
padding_right: 0.0,
min_width,
align: block.align.unwrap_or_default(),
markup,
},
)
})
};
// update cashe
if blocks.len() != self.computed.len() {
self.computed.clear();
for block in blocks {
let mw = comp_min_width(block);
self.computed.push(ComputedBlock {
block: block.clone(),
full: comp_full(block, mw),
short: comp_short(block, mw),
min_width: mw,
});
}
} else {
for (block, computed) in blocks.iter().zip(self.computed.iter_mut()) {
if block.min_width != computed.block.min_width
|| block.markup != computed.block.markup
{
let mw = comp_min_width(block);
*computed = ComputedBlock {
block: block.clone(),
full: comp_full(block, mw),
short: comp_short(block, mw),
min_width: mw,
};
} else {
if block.full_text != computed.block.full_text {
computed.block.full_text = block.full_text.clone();
computed.full = comp_full(block, computed.min_width);
}
if block.short_text != computed.block.short_text {
computed.block.full_text = block.full_text.clone();
computed.short = comp_short(block, computed.min_width);
}
computed.block.color = block.color;
computed.block.background = block.background;
computed.block.align = block.align;
computed.block.name = block.name.clone();
computed.block.instance = block.instance.clone();
computed.block.separator = block.separator;
computed.block.separator_block_width = block.separator_block_width;
}
}
}
}
pub fn get_computed(&self) -> &[ComputedBlock] {
&self.computed
}
}
|
