| author |  clover caruso <git@paperclover.net> 2026-10-02 12:49:27-07:00 |
| committer | clover caruso <git@paperclover.net> 2026-10-02 13:35:43-07:00 |
| log | 5a7c56cdaa6c4de435f0f0c28d29c72b980348bd |
| tree | 23cc5b087faf1e9060956465d811b17fb1a74093 |
| parent | 021a7246820757dd105aa45223eec7b9add63f79 |
| signature | Signed by SSH key SHA256:52mNGHRsVFBDED9IAX5pe+LRWUefqTbxEReunq21QvU |
fix: a box laid out inverted paints empty instead of failing the frame
A box with its bottom above its top failed the whole frame as an invalid
primitive ("Canvas drawing failed: InvalidPrimitive"), as the rename
field over a just-created section tab did. Such a box, or one smaller
than its inset, now paints empty.
Assisted-by: claude-opus-5.52 files changed, 31 insertions(+), 6 deletions(-)
crates/ui/src/lib.rs+4-6
| ... | ... | @@ -1589,12 +1589,10 @@ impl Ui { |
| 1589 | 1589 | }); |
| 1590 | 1590 | let border = blend(node.border, node.hover_border); |
| 1591 | 1591 | let [left, top, right, bottom] = node.inset; |
| 1592 | let painted = [ | |
| 1593 | rect[0] + left, | |
| 1594 | rect[1] + top, | |
| 1595 | rect[2] - right, | |
| 1596 | rect[3] - bottom, | |
| 1597 | ]; | |
| 1592 | // A box squeezed smaller than its inset, or than nothing as it eases shut, paints | |
| 1593 | // empty rather than inverted. | |
| 1594 | let [x, y] = [rect[0] + left, rect[1] + top]; | |
| 1595 | let painted = [x, y, (rect[2] - right).max(x), (rect[3] - bottom).max(y)]; | |
| 1598 | 1596 | let size = [painted[2] - painted[0], painted[3] - painted[1]]; |
| 1599 | 1597 | if let Some(color) = node.shadow { |
| 1600 | 1598 | let (own, menu); |
crates/ui/src/tests.rs+27
| ... | ... | @@ -3127,3 +3127,30 @@ fn a_loose_dialog_fits_its_contents_to_the_window_and_its_side_stretches_to_its_ |
| 3127 | 3127 | "row 10 at {row}, the list's top at {top}" |
| 3128 | 3128 | ); |
| 3129 | 3129 | } |
| 3130 | ||
| 3131 | #[test] | |
| 3132 | fn a_box_squeezed_past_its_inset_paints_empty_not_inverted() { | |
| 3133 | let mut ui = Ui::new(Theme::light(), DOUBLE_CLICK); | |
| 3134 | frame(&mut ui, |ui| { | |
| 3135 | ui.leaf( | |
| 3136 | "row", | |
| 3137 | Spec { | |
| 3138 | size: [px(100.0), px(4.0)], | |
| 3139 | fill: Some([1.0; 4]), | |
| 3140 | gradient: Some([0.5, 0.5, 0.5, 1.0]), | |
| 3141 | inset: [0.0, 0.0, 0.0, 10.0], | |
| 3142 | ..Spec::default() | |
| 3143 | }, | |
| 3144 | ); | |
| 3145 | }); | |
| 3146 | let rect = ui.display.iter().find_map(|item| match item { | |
| 3147 | Display::Rect { rect, .. } => Some(*rect), | |
| 3148 | _ => None, | |
| 3149 | }); | |
| 3150 | let [left, top, right, bottom] = rect.expect("the row paints"); | |
| 3151 | assert!( | |
| 3152 | right >= left && bottom >= top, | |
| 3153 | "{:?}", | |
| 3154 | [left, top, right, bottom] | |
| 3155 | ); | |
| 3156 | } |