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Add Event::relativize
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parent
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commit
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47
src/event.rs
47
src/event.rs
@ -298,6 +298,53 @@ pub enum Event {
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Exit,
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}
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impl Event {
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/// Returns the position of the mouse, if `self` is a mouse event.
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pub fn mouse_position(&self) -> Option<Vec2> {
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if let Event::Mouse {
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offset: _,
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position,
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event: _,
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} = *self
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{
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Some(position)
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} else {
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None
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}
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}
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/// Update `self` with the given offset.
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///
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/// If `self` is a mouse event, adds `top_left` to its offset.
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/// Otherwise, do nothing.
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pub fn relativize<V>(&mut self, top_left: V)
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where
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V: Into<Vec2>,
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{
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if let Event::Mouse {
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ref mut offset,
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position: _,
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event: _,
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} = *self
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{
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*offset = *offset + top_left;
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}
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}
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/// Returns a cloned, relativized event.
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///
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/// If `self` is a mouse event, adds `top_left` to its offset.
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/// Otherwise, returns a simple clone.
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pub fn relativized<V>(&self, top_left: V) -> Self
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where
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V: Into<Vec2>,
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{
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let mut result = self.clone();
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result.relativize(top_left);
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result
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}
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}
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impl From<char> for Event {
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fn from(c: char) -> Event {
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Event::Char(c)
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