TextSprite

Struct TextSprite 

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pub struct TextSprite { /* private fields */ }
Expand description

This is a helper type for drawing text into a sprite. Drawing text into a sprite is the recommended way to display text when using sprites in your game; it removes timing issues and gives you the flexibility of the sprite system rather than draw_text alone.

After creation with new, you can update_text as desired, and use get_sprite or get_sprite_mut to access the Sprite for other operations like move_to and get_bounds (which can tell you the height and width of the generated bitmap).

Note: it’s assumed that you’re using the system font and haven’t changed its tracking; we have no way to retrieve the current font or tracking with C APIs.

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impl TextSprite

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pub fn new<S>(text: S, background: LCDColor) -> Result<Self, Error>
where S: AsRef<str>,

Creates a TextSprite, draws the given text into it over the given background color, and adds the underlying sprite to the SpriteManager.

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pub fn get_sprite(&self) -> &Sprite

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pub fn get_sprite_mut(&mut self) -> &mut Sprite

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pub fn update_text<S>(&mut self, text: S) -> Result<(), Error>
where S: AsRef<str>,

Recreates the underlying bitmap with the given text; use get_sprite().get_bounds() to see the new size.

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impl Clone for TextSprite

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fn clone(&self) -> TextSprite

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TextSprite

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.