Fix table column resize handle double-click auto-size when id_salt is set #7896
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… set
The double-click detection loop in `show_generated` constructed widget
IDs using `ui.id().with("resize_column").with(i)`, but the actual
resize handle widgets were created with
`state_id.with("resize_column").with(i)` where `state_id = ui.id().with(id_salt)`.
When a table uses `id_salt` (common when multiple tables exist in the
same Ui), these IDs never match, so `read_response()` never finds the
resize handle's interactions. This made double-click auto-fit
completely non-functional for any table with an `id_salt`.
Fix: move the `state_id` initialization before the double-click
detection loop and use `state_id` instead of `ui.id()` for the
widget ID, matching what the resize handle widget uses.
Create a resizable two-column table with id_salt set, simulate a double-click on the column separator (resize handle), and verify the first column auto-sizes to fit its content. The test uses a small step_dt (0.05s) because egui_kittest processes each event in its own frame — with the default 0.25s step_dt, two clicks span 4 frames (1.0s), exceeding the 0.3s double-click threshold. Without the fix in the preceding commit, this test fails because the mismatched widget IDs prevent read_response() from detecting the double-click on the resize handle.
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Preview is being built... Preview will be available at https://egui-pr-preview.github.io/pr/7896-fix/table-column-separator-double-click-id-salt View snapshot changes at kitdiff |
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Summary
id_saltis setshow_generatedconstructed widget IDs usingui.id().with("resize_column").with(i), but the resize handle widgets usedstate_id.with("resize_column").with(i)wherestate_id = ui.id().with(id_salt)— these never matched, soread_response()never found the interactionstate_idinitialization before the loop and use it for the widget IDid_salt, simulates a double-click on the column separator, and verifies the column auto-sizesTest plan
cargo clippyclean