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Truncate text in clipped Table columns (#5023)

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* Closes https://github.com/emilk/egui/issues/5013
* Columns with `clip = true` will have `TextWrapMode::Truncate` set
* Added setting `Column::auto_size_this_frame` (acts like a double-click
on column resizer)
* Set `sizing_pass` on all cells in a column that is being auto-sized
(e.g. on double-click)


![image](https://github.com/user-attachments/assets/360f6b59-c9a9-468b-8919-4b7e4fc6661a)
This commit is contained in:
Emil Ernerfeldt
2024-08-29 10:38:19 +02:00
committed by GitHub
parent 343c3d16c3
commit 3777b8d274
3 changed files with 67 additions and 30 deletions
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25
crates/egui_extras/src/layout.rs
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@@ -33,6 +33,9 @@ pub(crate) struct StripLayoutFlags {
pub(crate) striped: bool,
pub(crate) hovered: bool,
pub(crate) selected: bool,
/// Used when we want to accruately measure the size of this cell.
pub(crate) sizing_pass: bool,
}
/// Positions cells in [`CellDirection`] and starts a new line on [`StripLayout::end_line`]
@@ -197,19 +200,27 @@ impl<'l> StripLayout<'l> {
child_ui_id_source: egui::Id,
add_cell_contents: impl FnOnce(&mut Ui),
) -> Ui {
let mut child_ui = self.ui.new_child(
UiBuilder::new()
.id_source(child_ui_id_source)
.ui_stack_info(egui::UiStackInfo::new(egui::UiKind::TableCell))
.max_rect(max_rect)
.layout(self.cell_layout),
);
let mut ui_builder = UiBuilder::new()
.id_source(child_ui_id_source)
.ui_stack_info(egui::UiStackInfo::new(egui::UiKind::TableCell))
.max_rect(max_rect)
.layout(self.cell_layout);
if flags.sizing_pass {
ui_builder = ui_builder.sizing_pass();
}
let mut child_ui = self.ui.new_child(ui_builder);
if flags.clip {
let margin = egui::Vec2::splat(self.ui.visuals().clip_rect_margin);
let margin = margin.min(0.5 * self.ui.spacing().item_spacing);
let clip_rect = max_rect.expand2(margin);
child_ui.set_clip_rect(clip_rect.intersect(child_ui.clip_rect()));
if !child_ui.is_sizing_pass() {
// Better to truncate (if we can), rather than hard clipping:
child_ui.style_mut().wrap_mode = Some(egui::TextWrapMode::Truncate);
}
}
if flags.selected {