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4c3b380889
* Fix the "ever-growing height" problem of Strip and Table Demos Problem ------- The height of "Table Demo" or "Strip Demo" floating window grows when the demo app is interacted with. If 'Continuous' mode is enabled in 'Backend' settings, the window grows irrespectively of user interaction. Observations ------------ I noticed that [`area_content_ui.min_rect().max.y`][1] is increasing monotonically with speed 0.5 px/frame. I also noticed that commenting out `ui.add(crate::egui_github_link_file!());` [statement][2] in `table_demo.rs` makes the problem disappear. The "Fix" --------- I added 0.5 to the height of the row with GitHub link. This solved the problem. Closes #3029. Warning ------- I failed to find the root cause of the problem. I don't understand why this change makes the problem disappear. [1]:9478e50d01/crates/egui/src/containers/window.rs (L403)[2]:9478e50d01/crates/egui_demo_lib/src/demo/table_demo.rs (L114)* Document `Rect::size` Other changes: - `area.rs`: Use existing API. - `table_demo.rs`: Remove unnecessary call.
120 lines
4.9 KiB
Rust
120 lines
4.9 KiB
Rust
use egui::Color32;
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use egui_extras::{Size, StripBuilder};
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/// Shows off a table with dynamic layout
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#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
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#[derive(Default)]
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pub struct StripDemo {}
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impl super::Demo for StripDemo {
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fn name(&self) -> &'static str {
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"▣ Strip Demo"
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}
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fn show(&mut self, ctx: &egui::Context, open: &mut bool) {
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egui::Window::new(self.name())
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.open(open)
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.resizable(true)
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.default_width(400.0)
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.show(ctx, |ui| {
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use super::View as _;
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self.ui(ui);
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});
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}
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}
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impl super::View for StripDemo {
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fn ui(&mut self, ui: &mut egui::Ui) {
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let dark_mode = ui.visuals().dark_mode;
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let faded_color = ui.visuals().window_fill();
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let faded_color = |color: Color32| -> Color32 {
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use egui::Rgba;
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let t = if dark_mode { 0.95 } else { 0.8 };
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egui::lerp(Rgba::from(color)..=Rgba::from(faded_color), t).into()
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};
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StripBuilder::new(ui)
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.size(Size::exact(50.0))
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.size(Size::remainder())
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.size(Size::relative(0.5).at_least(60.0))
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.size(Size::exact(10.5))
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.vertical(|mut strip| {
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strip.cell(|ui| {
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ui.painter().rect_filled(
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ui.available_rect_before_wrap(),
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0.0,
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faded_color(Color32::BLUE),
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);
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ui.label("width: 100%\nheight: 50px");
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});
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strip.strip(|builder| {
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builder.sizes(Size::remainder(), 2).horizontal(|mut strip| {
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strip.cell(|ui| {
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ui.painter().rect_filled(
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ui.available_rect_before_wrap(),
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0.0,
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faded_color(Color32::RED),
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);
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ui.label("width: 50%\nheight: remaining");
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});
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strip.strip(|builder| {
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builder.sizes(Size::remainder(), 3).vertical(|mut strip| {
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strip.empty();
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strip.cell(|ui| {
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ui.painter().rect_filled(
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ui.available_rect_before_wrap(),
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0.0,
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faded_color(Color32::YELLOW),
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);
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ui.label("width: 50%\nheight: 1/3 of the red region");
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});
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strip.empty();
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});
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});
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});
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});
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strip.strip(|builder| {
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builder
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.size(Size::remainder())
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.size(Size::exact(120.0))
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.size(Size::remainder())
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.size(Size::exact(70.0))
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.horizontal(|mut strip| {
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strip.empty();
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strip.strip(|builder| {
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builder
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.size(Size::remainder())
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.size(Size::exact(60.0))
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.size(Size::remainder())
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.vertical(|mut strip| {
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strip.empty();
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strip.cell(|ui| {
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ui.painter().rect_filled(
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ui.available_rect_before_wrap(),
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0.0,
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faded_color(Color32::GOLD),
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);
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ui.label("width: 120px\nheight: 60px");
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});
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});
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});
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strip.empty();
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strip.cell(|ui| {
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ui.painter().rect_filled(
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ui.available_rect_before_wrap(),
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0.0,
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faded_color(Color32::GREEN),
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);
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ui.label("width: 70px\n\nheight: 50%, but at least 60px.");
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});
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});
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});
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strip.cell(|ui| {
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ui.vertical_centered(|ui| {
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ui.add(crate::egui_github_link_file!());
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});
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});
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});
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}
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}
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