voxel/hUI
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add some helper fns

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griffi-gh 2024-03-11 18:48:46 +01:00
parent 027bc2c429
commit eab5072d1e
1 changed files with 18 additions and 2 deletions
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20
hui/src/input.rs
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@ -136,7 +136,7 @@ impl_fits64_for_keyboard_key!(
#[derive(Default, Clone, Copy, Debug)] #[derive(Default, Clone, Copy, Debug)]
pub struct MouseButtonMeta { pub struct MouseButtonMeta {
/// Position at which the input was initiated (last time it was pressed **down**) /// Position at which the input was initiated (last time it was pressed **down**)
pub start_position: Option<Vec2>, pub start_position: Vec2,
} }
#[derive(Default)] #[derive(Default)]
@ -186,7 +186,7 @@ impl UiInputState {
ButtonState::Pressed => { ButtonState::Pressed => {
let button = self.mouse_pointer.buttons.entry(button) let button = self.mouse_pointer.buttons.entry(button)
.or_insert(MouseButtonMeta::default()); .or_insert(MouseButtonMeta::default());
button.start_position = state.is_pressed().then_some(self.mouse_pointer.current_position); button.start_position = self.mouse_pointer.current_position;
}, },
ButtonState::Released => { ButtonState::Released => {
self.mouse_pointer.buttons.remove(&button); self.mouse_pointer.buttons.remove(&button);
@ -230,6 +230,22 @@ impl<'a> InputCtx<'a> {
self.0.mouse_pointer.buttons.contains_key(&button).into() self.0.mouse_pointer.buttons.contains_key(&button).into()
} }
/// Get the start position of a mouse button\
/// (Position at the last time it was pressed **down**)
///
/// Returns `None` if the button is not currently down
pub fn mouse_button_start_position(&self, button: MouseButton) -> Option<Vec2> {
self.0.mouse_pointer.buttons.get(&button).map(|meta| meta.start_position)
}
/// Get the relative movement of the mouse pointer since the button was pressed down
///
/// This function is similar to [`InputCtx::mouse_button_start_position`], but returns the relative movement instead of the absolute position
pub fn mouse_button_relative_movement(&self, button: MouseButton) -> Option<Vec2> {
let start = self.mouse_button_start_position(button)?;
Some(self.mouse_position() - start)
}
/// Check if a rect can be considered "hovered" /// Check if a rect can be considered "hovered"
pub fn is_hovered(&self, rect: Rect) -> bool { pub fn is_hovered(&self, rect: Rect) -> bool {
rect.contains_point(self.0.mouse_pointer.current_position) rect.contains_point(self.0.mouse_pointer.current_position)