Struct SubsetPlan 

pub struct SubsetPlan<'f, 'b> { /* private fields */ }

Information about how a subsetting operation will be executed.

This includes e.g. how glyph ids are mapped from the original font to the subset.

Implementations

impl<'f, 'b> SubsetPlan<'f, 'b>

pub fn subset(&self) -> Result<FontFace<'b>, SubsettingError>

Executes the subsetting plan.

pub fn unicode_to_old_glyph_mapping(&self) -> &Map<'_, char, u32>

Returns the mapping between codepoints in the original font and the associated glyph id in the original font.

pub fn new_to_old_glyph_mapping(&self) -> &Map<'_, u32, u32>

Returns the mapping between glyphs in the subset that will be produced by plan and the glyph in the original font.

pub fn old_to_new_glyph_mapping(&self) -> &Map<'_, u32, u32>

Returns the mapping between glyphs in the original font to glyphs in the subset that will be produced by plan.

impl<'f, 'b> SubsetPlan<'f, 'b>

pub fn into_raw(self) -> *mut hb_subset_plan_t

Converts the subset plan into raw sys::hb_subset_plan_t pointer.

This method transfers the ownership of the subset plan to the caller. It is up to the caller to call sys::hb_subset_plan_destroy to free the pointer, or call Self::from_raw to convert it back into SubsetPlan.

pub fn as_raw(&self) -> *mut hb_subset_plan_t

Exposes the raw inner pointer without transferring the ownership.

Unlike Self::into_raw, this method does not transfer the ownership of the pointer to the caller.

pub unsafe fn from_raw(plan: *mut hb_subset_plan_t) -> Self

Constructs a subset plan from raw sys::hb_subset_plan_t pointer.

Safety

The given plan pointer must either be constructed by some Harfbuzz function, or be returned from Self::into_raw.

Trait Implementations

impl<'f, 'b> Drop for SubsetPlan<'f, 'b>

fn drop(&mut self)

Executes the destructor for this type.