Struct cosmic::iced_widget::renderer::graphics::text::cosmic_text::Buffer

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pub struct Buffer {
    pub lines: Vec<BufferLine>,
    /* private fields */
}
Expand description

A buffer of text that is shaped and laid out

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§lines: Vec<BufferLine>

BufferLines (or paragraphs) of text in the buffer

Implementations§

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impl Buffer

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pub fn new_empty(metrics: Metrics) -> Buffer

Create an empty Buffer with the provided Metrics. This is useful for initializing a Buffer without a FontSystem.

You must populate the Buffer with at least one BufferLine before shaping and layout, for example by calling Buffer::set_text.

If you have a FontSystem in scope, you should use Buffer::new instead.

§Panics

Will panic if metrics.line_height is zero.

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pub fn new(font_system: &mut FontSystem, metrics: Metrics) -> Buffer

Create a new Buffer with the provided FontSystem and Metrics

§Panics

Will panic if metrics.line_height is zero.

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pub fn borrow_with<'a>( &'a mut self, font_system: &'a mut FontSystem, ) -> BorrowedWithFontSystem<'a, Buffer>

Mutably borrows the buffer together with an FontSystem for more convenient methods

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pub fn shape_until_cursor( &mut self, font_system: &mut FontSystem, cursor: Cursor, prune: bool, )

Shape lines until cursor, also scrolling to include cursor in view

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pub fn shape_until_scroll(&mut self, font_system: &mut FontSystem, prune: bool)

Shape lines until scroll

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pub fn layout_cursor( &mut self, font_system: &mut FontSystem, cursor: Cursor, ) -> Option<LayoutCursor>

Convert a Cursor to a LayoutCursor

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pub fn line_shape( &mut self, font_system: &mut FontSystem, line_i: usize, ) -> Option<&ShapeLine>

Shape the provided line index and return the result

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pub fn line_layout( &mut self, font_system: &mut FontSystem, line_i: usize, ) -> Option<&[LayoutLine]>

Lay out the provided line index and return the result

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pub fn metrics(&self) -> Metrics

Get the current Metrics

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pub fn set_metrics(&mut self, font_system: &mut FontSystem, metrics: Metrics)

Set the current Metrics

§Panics

Will panic if metrics.font_size is zero.

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pub fn wrap(&self) -> Wrap

Get the current Wrap

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pub fn set_wrap(&mut self, font_system: &mut FontSystem, wrap: Wrap)

Set the current Wrap

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pub fn monospace_width(&self) -> Option<f32>

Get the current monospace_width

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pub fn set_monospace_width( &mut self, font_system: &mut FontSystem, monospace_width: Option<f32>, )

Set monospace width monospace glyphs should be resized to match. None means don’t resize

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pub fn tab_width(&self) -> u16

Get the current tab_width

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pub fn set_tab_width(&mut self, font_system: &mut FontSystem, tab_width: u16)

Set tab width (number of spaces between tab stops)

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pub fn size(&self) -> (Option<f32>, Option<f32>)

Get the current buffer dimensions (width, height)

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pub fn set_size( &mut self, font_system: &mut FontSystem, width_opt: Option<f32>, height_opt: Option<f32>, )

Set the current buffer dimensions

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pub fn set_metrics_and_size( &mut self, font_system: &mut FontSystem, metrics: Metrics, width_opt: Option<f32>, height_opt: Option<f32>, )

Set the current Metrics and buffer dimensions at the same time

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Will panic if metrics.font_size is zero.

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pub fn scroll(&self) -> Scroll

Get the current scroll location

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pub fn set_scroll(&mut self, scroll: Scroll)

Set the current scroll location

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pub fn set_text( &mut self, font_system: &mut FontSystem, text: &str, attrs: Attrs<'_>, shaping: Shaping, )

Set text of buffer, using provided attributes for each line by default

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pub fn set_rich_text<'r, 's, I>( &mut self, font_system: &mut FontSystem, spans: I, default_attrs: Attrs<'_>, shaping: Shaping, alignment: Option<Align>, )
where I: IntoIterator<Item = (&'s str, Attrs<'r>)>,

Set text of buffer, using an iterator of styled spans (pairs of text and attributes)

let mut buffer = Buffer::new_empty(Metrics::new(32.0, 44.0));
let attrs = Attrs::new().family(Family::Serif);
buffer.set_rich_text(
    &mut font_system,
    [
        ("hello, ", attrs),
        ("cosmic\ntext", attrs.family(Family::Monospace)),
    ],
    attrs,
    Shaping::Advanced,
    None,
);
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pub fn redraw(&self) -> bool

True if a redraw is needed

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pub fn set_redraw(&mut self, redraw: bool)

Set redraw needed flag

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pub fn layout_runs(&self) -> LayoutRunIter<'_>

Get the visible layout runs for rendering and other tasks

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pub fn hit(&self, x: f32, y: f32) -> Option<Cursor>

Convert x, y position to Cursor (hit detection)

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pub fn cursor_motion( &mut self, font_system: &mut FontSystem, cursor: Cursor, cursor_x_opt: Option<i32>, motion: Motion, ) -> Option<(Cursor, Option<i32>)>

Apply a Motion to a Cursor

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pub fn draw<F>( &self, font_system: &mut FontSystem, cache: &mut SwashCache, color: Color, f: F, )
where F: FnMut(i32, i32, u32, u32, Color),

Draw the buffer

Trait Implementations§

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impl Clone for Buffer

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fn clone(&self) -> Buffer

Returns a copy 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 Buffer

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

Formats the value using the given formatter. Read more
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impl<'buffer> From<&'buffer mut Buffer> for BufferRef<'buffer>

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fn from(buffer: &'buffer mut Buffer) -> BufferRef<'buffer>

Converts to this type from the input type.
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impl<'buffer> From<Buffer> for BufferRef<'buffer>

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fn from(buffer: Buffer) -> BufferRef<'buffer>

Converts to this type from the input type.

Auto Trait Implementations§

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impl Freeze for Buffer

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impl RefUnwindSafe for Buffer

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impl Send for Buffer

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impl Sync for Buffer

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impl Unpin for Buffer

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impl UnwindSafe for Buffer

Blanket Implementations§

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impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S
where T: Real + Zero + Arithmetics + Clone, Swp: WhitePoint<T>, Dwp: WhitePoint<T>, D: AdaptFrom<S, Swp, Dwp, T>,

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fn adapt_into_using<M>(self, method: M) -> D
where M: TransformMatrix<T>,

Convert the source color to the destination color using the specified method.
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fn adapt_into(self) -> D

Convert the source color to the destination color using the bradford method by default.
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impl<T> Also for T

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fn also<F>(self, block: F) -> Self
where F: FnOnce(&mut Self),

Apply a function to this value and return the (possibly) modified value.
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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, Res> Apply<Res> for T
where T: ?Sized,

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fn apply<F>(self, f: F) -> Res
where F: FnOnce(Self) -> Res, Self: Sized,

Apply a function which takes the parameter by value.
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fn apply_ref<F>(&self, f: F) -> Res
where F: FnOnce(&Self) -> Res,

Apply a function which takes the parameter by reference.
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fn apply_mut<F>(&mut self, f: F) -> Res
where F: FnOnce(&mut Self) -> Res,

Apply a function which takes the parameter by mutable reference.
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impl<T, C> ArraysFrom<C> for T
where C: IntoArrays<T>,

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fn arrays_from(colors: C) -> T

Cast a collection of colors into a collection of arrays.
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impl<T, C> ArraysInto<C> for T
where C: FromArrays<T>,

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fn arrays_into(self) -> C

Cast this collection of arrays into a collection of colors.
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impl<T> Borrow<T> for T
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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<WpParam, T, U> Cam16IntoUnclamped<WpParam, T> for U
where T: FromCam16Unclamped<WpParam, U>,

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type Scalar = <T as FromCam16Unclamped<WpParam, U>>::Scalar

The number type that’s used in parameters when converting.
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fn cam16_into_unclamped( self, parameters: BakedParameters<WpParam, <U as Cam16IntoUnclamped<WpParam, T>>::Scalar>, ) -> T

Converts self into C, using the provided parameters.
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T, C> ComponentsFrom<C> for T
where C: IntoComponents<T>,

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fn components_from(colors: C) -> T

Cast a collection of colors into a collection of color components.
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where T: Any,

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Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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Returns the argument unchanged.

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Performs a conversion from angle.
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The number type that’s used in parameters when converting.
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Converts self into C, using the provided parameters.
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impl<T, U> IntoColor<U> for T
where U: FromColor<T>,

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fn into_color(self) -> U

Convert into T with values clamped to the color defined bounds Read more
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Convert into T. The resulting color might be invalid in its color space Read more
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const ALIGN: usize = _

The alignment of pointer.
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type Error = <C as TryFromComponents<T>>::Error

The error for when try_into_colors fails to cast.
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Try to cast this collection of color components into a collection of colors. Read more
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Performs the conversion.
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fn try_into_color(self) -> Result<U, OutOfBounds<U>>

Convert into T, returning ok if the color is inside of its defined range, otherwise an OutOfBounds error is returned which contains the unclamped color. Read more
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impl<C, U> UintsFrom<C> for U
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fn uints_from(colors: C) -> U

Cast a collection of colors into a collection of unsigned integers.
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fn uints_into(self) -> C

Cast this collection of unsigned integers into a collection of colors.
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