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egui_extras: follow closure-based conventions for TableBody.heterogeneous_rows

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This commit is contained in:
Wayne Warren
2022-04-03 11:18:13 -06:00
parent ab4930fde7
commit 44bd8c1cc4
2 changed files with 33 additions and 38 deletions
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54
egui_demo_lib/src/apps/demo/table_demo.rs
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@@ -1,5 +1,5 @@
use egui::TextStyle;
use egui_extras::{Size, StripBuilder, TableBuilder, TableRow, TableRowBuilder};
use egui_extras::{Size, StripBuilder, TableBuilder, TableRow};
/// Shows off a table with dynamic layout
#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
@@ -91,7 +91,7 @@ impl TableDemo {
});
});
})
.body(|body| {
.body(|mut body| {
if !self.heterogeneous_rows {
body.rows(text_height, self.num_rows, |row_index, mut row| {
row.col(|ui| {
@@ -107,47 +107,27 @@ impl TableDemo {
});
});
} else {
let row_builder = DemoRowBuilder {
row_count: self.num_rows,
};
body.heterogeneous_rows(row_builder);
let rows = DemoRows::new(self.num_rows);
body.heterogeneous_rows(rows, DemoRows::populate_row);
}
});
}
}
struct DemoRowBuilder {
row_count: usize,
}
struct DemoRows {
row_count: usize,
current_row: usize,
}
impl Iterator for DemoRows {
type Item = f32;
fn next(&mut self) -> Option<Self::Item> {
if self.current_row < self.row_count {
let thick = self.current_row % 6 == 0;
self.current_row += 1;
Some(if thick { 30.0 } else { 18.0 })
} else {
None
impl DemoRows {
fn new(row_count: usize) -> Self {
Self {
row_count,
current_row: 0,
}
}
}
impl TableRowBuilder for DemoRowBuilder {
fn row_heights(&self, _: &Vec<f32>) -> Box<dyn Iterator<Item = f32>> {
Box::new(DemoRows {
row_count: self.row_count,
current_row: 0,
})
}
fn populate_row(&self, index: usize, mut row: TableRow<'_, '_>) {
fn populate_row(index: usize, mut row: TableRow<'_, '_>) {
let thick = index % 6 == 0;
row.col(|ui| {
ui.centered_and_justified(|ui| {
@@ -172,6 +152,20 @@ impl TableRowBuilder for DemoRowBuilder {
}
}
impl Iterator for DemoRows {
type Item = f32;
fn next(&mut self) -> Option<Self::Item> {
if self.current_row < self.row_count {
let thick = self.current_row % 6 == 0;
self.current_row += 1;
Some(if thick { 30.0 } else { 18.0 })
} else {
None
}
}
}
fn clock_emoji(row_index: usize) -> String {
char::from_u32(0x1f550 + row_index as u32 % 24)
.unwrap()