Struct stdweb::web::CanvasRenderingContext2d

pub struct CanvasRenderingContext2d(_);

Used for drawing rectangles, text, images and other objects onto the canvas element.

(JavaScript docs)

Methods

impl CanvasRenderingContext2d

fn fill_rect(&self, x: f64, y: f64, width: f64, height: f64)

Draws a filled rectangle whose starting point is at the coordinates (x, y) with the specified width and height and whose style is determined by the fillStyle attribute.

(JavaScript docs)

fn fill_text(&self, text: &str, x: f64, y: f64, max_width: Option<f64>)

Draws a text string at the specified coordinates, filling the string's characters with the current foreground color. An optional parameter allows specifying a maximum width for the rendered text, which the user agent will achieve by condensing the text or by using a lower font size.

(JavaScript docs)

Trait Implementations

impl Clone for CanvasRenderingContext2d

fn clone(&self) -> CanvasRenderingContext2d

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CanvasRenderingContext2d

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq for CanvasRenderingContext2d

fn eq(&self, __arg_0: &CanvasRenderingContext2d) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &CanvasRenderingContext2d) -> bool

This method tests for !=.

impl Eq for CanvasRenderingContext2d

impl InstanceOf for CanvasRenderingContext2d

fn instance_of(reference: &Reference) -> bool

Checks whenever a given Reference if of type Self.

impl AsRef<Reference> for CanvasRenderingContext2d

fn as_ref(&self) -> &Reference

Performs the conversion.

impl ReferenceType for CanvasRenderingContext2d

unsafe fn from_reference_unchecked(reference: Reference) -> Self

Converts a given reference into a concrete reference-like wrapper. Doesn't do any type checking; highly unsafe to use!

impl TryFrom<Reference> for CanvasRenderingContext2d

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(reference: Reference) -> Result<Self, Self::Error>

Performs the conversion.

impl<'_r> TryFrom<&'_r Reference> for CanvasRenderingContext2d

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(reference: &Reference) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for CanvasRenderingContext2d

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl<'_r> TryFrom<&'_r Value> for CanvasRenderingContext2d

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl JsSerialize for CanvasRenderingContext2d

impl RenderingContext for CanvasRenderingContext2d

type Error = ConversionError

Type of error which can occur whilst creating this context

fn from_canvas(canvas: &CanvasElement) -> Result<Self, ConversionError>

Name which identifies this kind of rendering context.