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Add comment and check for newline before multiline layout

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This commit is contained in:
Hubert Głuchowski
2024-12-05 18:43:22 +01:00
parent 25da82279f
commit 40f237d43c
1 changed files with 5 additions and 1 deletions
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6
crates/epaint/src/text/fonts.rs
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@@ -762,7 +762,11 @@ impl GalleyCache {
cached.galley.clone() cached.galley.clone()
} }
std::collections::hash_map::Entry::Vacant(entry) => { std::collections::hash_map::Entry::Vacant(entry) => {
if job.break_on_newline { // If the text contains newlines that will always break into a new row then
// we can easily lay out all the lines individually and then merge the `Galley`s.
// This allows individual lines to be cached separately which means small
// modifications to the source text will only cause impacted lines to be laid out again.
if job.break_on_newline && job.text.contains('\n') {
let galley = self.layout_multiline(fonts, job); let galley = self.layout_multiline(fonts, job);
let galley = Arc::new(galley); let galley = Arc::new(galley);
self.cache.insert( self.cache.insert(