5539dbe620
* Rename epaint feature "persistence" to "serialize" * Add separate "serialize" feature to egui * egui_demo_lib: separate serialize and persistence features * Add App::persist_native_window and App::persist_egui_memory Controls what gets persisted
78 lines
2 KiB
Rust
78 lines
2 KiB
Rust
/// What sort of interaction is a widget sensitive to?
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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// #[cfg_attr(feature = "serde", derive(serde::Serialize))]
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pub struct Sense {
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/// buttons, sliders, windows ...
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pub click: bool,
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/// sliders, windows, scroll bars, scroll areas ...
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pub drag: bool,
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/// this widgets want focus.
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/// Anything interactive + labels that can be focused
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/// for the benefit of screen readers.
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pub focusable: bool,
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}
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impl Sense {
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/// Senses no clicks or drags. Only senses mouse hover.
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pub fn hover() -> Self {
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Self {
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click: false,
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drag: false,
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focusable: false,
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}
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}
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/// Senses no clicks or drags, but can be focused with the keyboard.
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/// Used for labels that can be focused for the benefit of screen readers.
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pub fn focusable_noninteractive() -> Self {
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Self {
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click: false,
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drag: false,
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focusable: true,
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}
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}
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/// Sense clicks and hover, but not drags.
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pub fn click() -> Self {
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Self {
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click: true,
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drag: false,
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focusable: true,
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}
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}
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/// Sense drags and hover, but not clicks.
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pub fn drag() -> Self {
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Self {
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click: false,
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drag: true,
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focusable: true,
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}
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}
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/// Sense both clicks, drags and hover (e.g. a slider or window).
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pub fn click_and_drag() -> Self {
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Self {
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click: true,
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drag: true,
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focusable: true,
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}
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}
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/// The logical "or" of two `Sense`s.
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#[must_use]
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pub fn union(self, other: Self) -> Self {
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Self {
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click: self.click | other.click,
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drag: self.drag | other.drag,
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focusable: self.focusable | other.focusable,
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}
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}
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/// Returns true if we sense either clicks or drags.
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pub fn interactive(&self) -> bool {
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self.click || self.drag
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}
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}
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