Struct rusttyper::RunBuffer

pub struct RunBuffer<'text, P> { /* fields omitted */ }

Implementations

impl<'text, P> RunBuffer<'text, P> where
    P: 'text, 

pub fn new() -> Self

pub fn push_run<I>(&mut self, layout: Layout<P>, it: I) where
    I: Iterator<Item = Text<'text>>, 

pub fn push<T>(&mut self, layout: Layout<P>, t: T) where
    T: Into<Text<'text>>, 

pub fn write<S>(&mut self, pos: P, width: u32, text: S) where
    S: Into<Cow<'text, str>>, 

pub fn reset(&mut self)

pub fn glyph_estimate(&self) -> usize

Returns an estimate of how many glyphs are in the buffer. This may be inaccurate due to eg ligatures and normalization.

pub fn measure_area<'fonts>(
    &mut self,
    render: &'fonts mut Render
) -> (Point<f32>, &mut Layout<P>)

Runs the layout algorithm on the most recently added run, and returns the amount of space used, and its Layout object.

pub fn build<F>(&mut self, render: &mut Render, write_glyph: F) where
    F: for<'x, 'y> FnMut(&'x Text<'y>, &P, Rect<i32>, Rect<f32>) -> FlowControl, 

Runs the layout algorithm, and uploads glyphs to the cache.

write_glyph is called with each positioned glyph. You can use this to build your vertex buffer.

The first parameter holds the Text and Style. The second parameter is the origin, &P. The third parameter specifies the rectangle the glyph occupises, relative to the origin. For example, if P is a point in a 2D UI, then the glyph is simply positioned at origin + offset. The fourth parameter is UV coordinates.

Trait Implementations

impl<'text, P: Default> Default for RunBuffer<'text, P>

fn default() -> RunBuffer<'text, P>

Returns the "default value" for a type.