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[demo] Refactor and minor cleanup

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This commit is contained in:
Emil Ernerfeldt
2021-02-07 14:46:53 +01:00
parent e82fb81f07
commit 6377a4231f
11 changed files with 147 additions and 116 deletions
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30
egui_demo_lib/src/apps/demo/scrolling.rs
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@@ -2,6 +2,7 @@ use egui::{color::*, *};
#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]
#[cfg_attr(feature = "persistence", serde(default))]
#[derive(PartialEq)]
pub struct Scrolling {
track_item: usize,
tack_item_align: Align,
@@ -36,14 +37,6 @@ impl super::Demo for Scrolling {
impl super::View for Scrolling {
fn ui(&mut self, ui: &mut Ui) {
ScrollArea::from_max_height(200.0)
.id_source("lorem_ipsum_scroll_area")
.show(ui, |ui| {
ui.label(crate::LOREM_IPSUM_LONG);
ui.label(crate::LOREM_IPSUM_LONG);
});
ui.separator();
ui.label("This shows how you can scroll to a specific item or pixel offset");
let mut track_item = false;
@@ -88,6 +81,7 @@ impl super::View for Scrolling {
scroll_area = scroll_area.scroll_offset(self.offset);
}
ui.separator();
let (current_scroll, max_scroll) = scroll_area.show(ui, |ui| {
if scroll_top {
ui.scroll_to_cursor(Align::TOP);
@@ -95,10 +89,11 @@ impl super::View for Scrolling {
ui.vertical(|ui| {
for item in 1..=50 {
if track_item && item == self.track_item {
let response = ui.colored_label(Color32::YELLOW, format!("Item {}", item));
let response =
ui.colored_label(Color32::YELLOW, format!("This is item {}", item));
response.scroll_to_me(self.tack_item_align);
} else {
ui.label(format!("Item {}", item));
ui.label(format!("This is item {}", item));
}
}
});
@@ -113,10 +108,17 @@ impl super::View for Scrolling {
let max_scroll = ui.min_rect().height() - ui.clip_rect().height() + 2.0 * margin;
(current_scroll, max_scroll)
});
ui.separator();
ui.colored_label(
Color32::WHITE,
format!("{:.0}/{:.0} px", current_scroll, max_scroll),
);
ui.label(format!(
"Scroll offset: {:.0}/{:.0} px",
current_scroll, max_scroll
));
ui.separator();
ui.vertical_centered(|ui| {
egui::reset_button(ui, self);
ui.add(crate::__egui_github_link_file!());
});
}
}