Struct PaintList

pub struct PaintList(/* private fields */);

A list of Shapes paired with a clip rectangle.

Implementations

impl PaintList

pub fn is_empty(&self) -> bool

pub fn next_idx(&self) -> ShapeIdx

pub fn add(&mut self, clip_rect: Rect, shape: Shape) -> ShapeIdx

Returns the index of the new Shape that can be used with PaintList::set.

pub fn extend<I: IntoIterator<Item = Shape>>( &mut self, clip_rect: Rect, shapes: I, )

pub fn set(&mut self, idx: ShapeIdx, clip_rect: Rect, shape: Shape)

Modify an existing Shape.

Sometimes you want to paint a frame behind some contents, but don’t know how large the frame needs to be until the contents have been added, and therefor also painted to the PaintList.

The solution is to allocate a Shape using let idx = paint_list.add(cr, Shape::Noop); and then later setting it using paint_list.set(idx, cr, frame);.

pub fn reset_shape(&mut self, idx: ShapeIdx)

Set the given shape to be empty (a Shape::Noop).

pub fn mutate_shape(&mut self, idx: ShapeIdx, f: impl FnOnce(&mut ClippedShape))

Mutate the shape at the given index, if any.

pub fn transform(&mut self, transform: TSTransform)

Transform each Shape and clip rectangle by this much, in-place

pub fn transform_range( &mut self, start: ShapeIdx, end: ShapeIdx, transform: TSTransform, )

Transform each Shape and clip rectangle in range by this much, in-place

pub fn all_entries(&self) -> impl ExactSizeIterator<Item = &ClippedShape>

Read-only access to all held shapes.

Trait Implementations

impl Clone for PaintList

fn clone(&self) -> PaintList

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for PaintList

fn default() -> PaintList

Returns the “default value” for a type.