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Add Response::contains_pointer (#3859)

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* Part of https://github.com/emilk/egui/issues/3841
This commit is contained in:
Emil Ernerfeldt
2024-01-22 11:17:03 +01:00
committed by GitHub
parent 894a53488a
commit 2d725d157f
2 changed files with 28 additions and 7 deletions
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15
crates/egui/src/response.rs
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@@ -212,7 +212,9 @@ impl Response {
/// The pointer is hovering above this widget or the widget was clicked/tapped this frame.
///
/// Note that this is slightly different from checking `response.rect.contains(pointer_pos)`.
/// This will be `false` whenever some other widget is being dragged.
///
/// Note that this is slightly different from [`Self::contains_pointer`].
/// For one, the hover rectangle is slightly larger, by half of the current item spacing
/// (to make it easier to click things). But `hovered` also checks that no other area
/// is covering this response rectangle.
@@ -221,6 +223,17 @@ impl Response {
self.hovered
}
/// Returns true if the pointer is contained by the response rect.
///
/// In contrast to [`Self::hovered`], this can be `true` even if some other widget is being dragged.
/// This means it is useful for styling things like drag-and-drop targets.
///
/// In contrast to [`Self::hovered`], this is true even when dragging some other widget
/// onto this one.
pub fn contains_pointer(&self) -> bool {
self.ctx.rect_contains_pointer(self.layer_id, self.rect)
}
/// The widget is highlighted via a call to [`Self::highlight`] or [`Context::highlight_widget`].
#[doc(hidden)]
pub fn highlighted(&self) -> bool {