fonts

Trait PlatformFontMethods

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pub trait PlatformFontMethods: Sized {

Show 13 methods    // Required methods
    fn new_from_local_font_identifier(
        font_identifier: LocalFontIdentifier,
        pt_size: Option<Au>,
        variations: &[FontVariation],
        synthetic_bold: bool,
    ) -> Result<PlatformFont, &'static str>;
    fn new_from_data(
        font_identifier: FontIdentifier,
        data: &FontData,
        pt_size: Option<Au>,
        variations: &[FontVariation],
        synthetic_bold: bool,
    ) -> Result<PlatformFont, &'static str>;
    fn descriptor(&self) -> FontTemplateDescriptor;
    fn glyph_index(&self, codepoint: char) -> Option<u32>;
    fn glyph_h_advance(&self, _: u32) -> Option<f64>;
    fn glyph_h_kerning(&self, glyph0: u32, glyph1: u32) -> f64;
    fn metrics(&self) -> FontMetrics;
    fn table_for_tag(&self, _: Tag) -> Option<FontTable>;
    fn typographic_bounds(&self, _: u32) -> Rect<f32>;
    fn webrender_font_instance_flags(&self) -> FontInstanceFlags;
    fn variations(&self) -> &[FontVariation];

    // Provided methods
    fn new_from_template(
        template: FontTemplateRef,
        pt_size: Option<Au>,
        variations: &[FontVariation],
        data: &Option<FontData>,
        synthetic_bold: bool,
    ) -> Result<PlatformFont, &'static str> { ... }
    fn descriptor_from_os2_table(os2: &Os2<'_>) -> FontTemplateDescriptor { ... }

}

Required Methods§

Source

fn new_from_local_font_identifier( font_identifier: LocalFontIdentifier, pt_size: Option<Au>, variations: &[FontVariation], synthetic_bold: bool, ) -> Result<PlatformFont, &'static str>

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fn new_from_data( font_identifier: FontIdentifier, data: &FontData, pt_size: Option<Au>, variations: &[FontVariation], synthetic_bold: bool, ) -> Result<PlatformFont, &'static str>

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fn descriptor(&self) -> FontTemplateDescriptor

Get a FontTemplateDescriptor from a PlatformFont. This is used to get descriptors for web fonts.

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fn glyph_index(&self, codepoint: char) -> Option<u32>

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fn glyph_h_advance(&self, _: u32) -> Option<f64>

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fn glyph_h_kerning(&self, glyph0: u32, glyph1: u32) -> f64

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fn metrics(&self) -> FontMetrics

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fn table_for_tag(&self, _: Tag) -> Option<FontTable>

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fn typographic_bounds(&self, _: u32) -> Rect<f32>

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fn webrender_font_instance_flags(&self) -> FontInstanceFlags

Get the necessary FontInstanceFlags` for this font.

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fn variations(&self) -> &[FontVariation]

Return all the variation values that the font was instantiated with.

Provided Methods§

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fn new_from_template( template: FontTemplateRef, pt_size: Option<Au>, variations: &[FontVariation], data: &Option<FontData>, synthetic_bold: bool, ) -> Result<PlatformFont, &'static str>

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fn descriptor_from_os2_table(os2: &Os2<'_>) -> FontTemplateDescriptor

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§