Enum canvas::canvas_data::PathState

enum PathState {
    UserSpacePathBuilder(Box<dyn GenericPathBuilder>, Option<Transform2D<f32>>),
    DeviceSpacePathBuilder(Box<dyn GenericPathBuilder>),
    UserSpacePath(Path, Option<Transform2D<f32>>),
}

The canvas data stores a state machine for the current status of the path data and any relevant transformations that are applied to it. The Azure drawing API expects the path to be in userspace. However, when a path is being built but the canvas’ transform changes, we choose to transform the path and perform further operations to it in device space. When it’s time to draw the path, we convert it back to userspace and draw it with the correct transform applied. TODO: De-abstract now that Azure is removed?

Variants

UserSpacePathBuilder(Box<dyn GenericPathBuilder>, Option<Transform2D<f32>>)

Path builder in user-space. If a transform has been applied but no further path operations have occurred, it is stored in the optional field.

DeviceSpacePathBuilder(Box<dyn GenericPathBuilder>)

Path builder in device-space.

UserSpacePath(Path, Option<Transform2D<f32>>)

Path in user-space. If a transform has been applied but but no further path operations have occurred, it is stored in the optional field.

Implementations

impl PathState

fn is_path(&self) -> bool

fn path(&self) -> &Path