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add axis to flip so spans w negative sign work correctly

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shadow cat
2025-09-27 23:47:42 -04:00
parent dc9340b26c
commit b2950566af
2 changed files with 14 additions and 10 deletions
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2
src/core/span.rs
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@@ -33,7 +33,7 @@ impl Widget for Span {
} }
axis.bot_right.set(start); axis.bot_right.set(start);
if self.dir.sign == Sign::Neg { if self.dir.sign == Sign::Neg {
child_region.flip(); child_region.flip(self.dir.axis);
} }
painter.widget_within(child, child_region); painter.widget_within(child, child_region);
} }

22
src/layout/pos.rs
View File

@@ -87,13 +87,14 @@ impl UiVec2 {
} }
} }
pub fn flip(&mut self) { /// reflection about an axis
self.rel = 1.0 - self.rel; pub fn flip(&mut self, axis: Axis) {
self.abs = -self.abs; *self.rel.axis_mut(axis) = 1.0 - self.rel.axis(axis);
*self.abs.axis_mut(axis) = -self.abs.axis(axis);
} }
pub fn flipped(mut self) -> Self { pub fn flipped(mut self, axis: Axis) -> Self {
self.flip(); self.flip(axis);
self self
} }
@@ -227,10 +228,13 @@ impl UiRegion {
} }
} }
pub fn flip(&mut self) { pub fn flip(&mut self, axis: Axis) {
self.top_left.flip(); self.top_left.flip(axis);
self.bot_right.flip(); self.bot_right.flip(axis);
std::mem::swap(&mut self.top_left, &mut self.bot_right); let tl = self.top_left.axis_mut(axis);
let br = self.bot_right.axis_mut(axis);
std::mem::swap(tl.rel, br.rel);
std::mem::swap(tl.abs, br.abs);
} }
pub fn shift(&mut self, offset: impl Into<UiVec2>) { pub fn shift(&mut self, offset: impl Into<UiVec2>) {