Struct Viewport 

pub struct Viewport {
    pub top_line: u32,
    pub left_column: u32,
    pub visible_lines: u32,
    pub visible_columns: u32,
}

Fields

top_line: u32

left_column: u32

visible_lines: u32

visible_columns: u32

Implementations

impl Viewport

pub fn scroll_to_contain(self, p: Position, margin: u32) -> Self

Scroll both axes so p is visible within this viewport, keeping at least margin lines/columns of context on each edge where room allows. The same margin applies to both axes. All arithmetic is saturating, so the viewport never scrolls past 0 and a position at the very top/left is clamped flush to the origin.

Pairing this with the editor’s single cursor-mutation path makes “cursor outside its viewport” an unrepresentable state: every move re-derives the viewport from the (clamped) cursor.

Trait Implementations

impl Clone for Viewport

fn clone(&self) -> Viewport

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Viewport

impl Debug for Viewport

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

Formats the value using the given formatter.

impl Default for Viewport

fn default() -> Viewport

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Viewport

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Viewport

impl JsonSchema for Viewport

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl PartialEq for Viewport

fn eq(&self, other: &Viewport) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for Viewport

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Viewport