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Make basic text shaping the default shaping strategy

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Héctor Ramón Jiménez 2023-04-19 01:19:56 +02:00
parent 57a276e165
commit 33b5a90019
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GPG key ID: 140CC052C94F138E
24 changed files with 140 additions and 10 deletions
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22
core/src/text.rs
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@ -27,6 +27,15 @@ pub struct Text<'a, Font> {
/// The vertical alignment of the [`Text`].
pub vertical_alignment: alignment::Vertical,
/// Whether the [`Text`] needs advanced shaping and font fallback.
///
/// You will need to enable this flag if the text contains a complex
/// script, the font used needs it, and/or multiple fonts in your system
/// may be needed to display all of the glyphs.
///
/// Advanced shaping is expensive! You should only enable it when necessary.
pub advanced_shape: bool,
}
/// The result of hit testing on text.
@ -77,11 +86,19 @@ pub trait Renderer: crate::Renderer {
size: f32,
font: Self::Font,
bounds: Size,
advanced_shape: bool,
) -> (f32, f32);
/// Measures the width of the text as if it were laid out in a single line.
fn measure_width(&self, content: &str, size: f32, font: Self::Font) -> f32 {
let (width, _) = self.measure(content, size, font, Size::INFINITY);
fn measure_width(
&self,
content: &str,
size: f32,
font: Self::Font,
advanced_shape: bool,
) -> f32 {
let (width, _) =
self.measure(content, size, font, Size::INFINITY, advanced_shape);
width
}
@ -101,6 +118,7 @@ pub trait Renderer: crate::Renderer {
bounds: Size,
point: Point,
nearest_only: bool,
advanced_shape: bool,
) -> Option<Hit>;
/// Loads a [`Self::Font`] from its bytes.