Struct FilterLayerPlacement 

pub struct FilterLayerPlacement {
    pub pixmap_bbox: RectU16,
    pub dest_bbox: RectU16,
    pub src_x: u16,
    pub src_y: u16,
}

Metadata about a filter layer and how it should be composited back into the parent layer.

Fields

pixmap_bbox: RectU16

The conceptual bounding box of the pixmap that needs to be allocated to render a layer correctly, including the area affected by the filter.

For example, if the filter layer contains a rect spanning (200, 200) to (300, 300) with a blur that has a radius exceeding the rectangle 40 pixels on each side, the pixmap bbox will be (160, 160) to (340, 340).

See the comments in FilterLayerPlacement::new for more information.

dest_bbox: RectU16

Rectangle in the parent layer’s coordinate space the filtered pixmap is composited into.

See the comments in FilterLayerPlacement::new for more information.

src_x: u16

Source x offset used when sampling from the filter pixmap.

See the comments in FilterLayerPlacement::new for more information.

src_y: u16

Source y offset used when sampling from the filter pixmap.

See the comments in FilterLayerPlacement::new for more information.

Implementations

impl FilterLayerPlacement

pub(crate) const EMPTY: Self

pub(crate) fn new(bbox: RectU16, filter_plan: &FilterData) -> Self

pub fn src_origin(self) -> (u16, u16)

Return the source origin of the filter layer.

Trait Implementations

impl Clone for FilterLayerPlacement

fn clone(&self) -> FilterLayerPlacement

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FilterLayerPlacement

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

Formats the value using the given formatter.

impl Copy for FilterLayerPlacement