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Return more info from ScrollArea::show (#1166)

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This commit is contained in:
Emil Ernerfeldt
2022-01-26 22:19:32 +01:00
committed by GitHub
parent 1134258441
commit 3333d63b91
6 changed files with 72 additions and 34 deletions
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46
egui_demo_lib/src/apps/demo/scrolling.rs
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@@ -210,32 +210,34 @@ impl super::View for ScrollTo {
}
ui.separator();
let (current_scroll, max_scroll) = scroll_area.show(ui, |ui| {
if scroll_top {
ui.scroll_to_cursor(Align::TOP);
}
ui.vertical(|ui| {
for item in 1..=50 {
if track_item && item == self.track_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!("This is item {}", item));
}
let (current_scroll, max_scroll) = scroll_area
.show(ui, |ui| {
if scroll_top {
ui.scroll_to_cursor(Align::TOP);
}
});
ui.vertical(|ui| {
for item in 1..=50 {
if track_item && item == self.track_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!("This is item {}", item));
}
}
});
if scroll_bottom {
ui.scroll_to_cursor(Align::BOTTOM);
}
if scroll_bottom {
ui.scroll_to_cursor(Align::BOTTOM);
}
let margin = ui.visuals().clip_rect_margin;
let margin = ui.visuals().clip_rect_margin;
let current_scroll = ui.clip_rect().top() - ui.min_rect().top() + margin;
let max_scroll = ui.min_rect().height() - ui.clip_rect().height() + 2.0 * margin;
(current_scroll, max_scroll)
});
let current_scroll = ui.clip_rect().top() - ui.min_rect().top() + margin;
let max_scroll = ui.min_rect().height() - ui.clip_rect().height() + 2.0 * margin;
(current_scroll, max_scroll)
})
.inner;
ui.separator();
ui.label(format!(