Struct plotters_cairo::CairoBackend
source · pub struct CairoBackend<'a> { /* private fields */ }
Expand description
The drawing backend that is backed with a Cairo context
Implementations§
source§impl<'a> CairoBackend<'a>
impl<'a> CairoBackend<'a>
Trait Implementations§
source§impl<'a> DrawingBackend for CairoBackend<'a>
impl<'a> DrawingBackend for CairoBackend<'a>
source§fn ensure_prepared(&mut self) -> Result<(), DrawingErrorKind<Self::ErrorType>>
fn ensure_prepared(&mut self) -> Result<(), DrawingErrorKind<Self::ErrorType>>
Ensure the backend is ready to draw
source§fn present(&mut self) -> Result<(), DrawingErrorKind<Self::ErrorType>>
fn present(&mut self) -> Result<(), DrawingErrorKind<Self::ErrorType>>
Finalize the drawing step and present all the changes.
This is used as the real-time rendering support.
The backend may implement in the following way, when
ensure_prepared
is called
it checks if it needs a fresh buffer and present
is called rendering all the
pending changes on the screen.source§fn draw_pixel(
&mut self,
point: BackendCoord,
color: BackendColor
) -> Result<(), DrawingErrorKind<Self::ErrorType>>
fn draw_pixel( &mut self, point: BackendCoord, color: BackendColor ) -> Result<(), DrawingErrorKind<Self::ErrorType>>
Draw a pixel on the drawing backend Read more
source§fn draw_line<S: BackendStyle>(
&mut self,
from: BackendCoord,
to: BackendCoord,
style: &S
) -> Result<(), DrawingErrorKind<Self::ErrorType>>
fn draw_line<S: BackendStyle>( &mut self, from: BackendCoord, to: BackendCoord, style: &S ) -> Result<(), DrawingErrorKind<Self::ErrorType>>
Draw a line on the drawing backend Read more
source§fn draw_rect<S: BackendStyle>(
&mut self,
upper_left: BackendCoord,
bottom_right: BackendCoord,
style: &S,
fill: bool
) -> Result<(), DrawingErrorKind<Self::ErrorType>>
fn draw_rect<S: BackendStyle>( &mut self, upper_left: BackendCoord, bottom_right: BackendCoord, style: &S, fill: bool ) -> Result<(), DrawingErrorKind<Self::ErrorType>>
Draw a rectangle on the drawing backend Read more
source§fn draw_path<S: BackendStyle, I: IntoIterator<Item = BackendCoord>>(
&mut self,
path: I,
style: &S
) -> Result<(), DrawingErrorKind<Self::ErrorType>>
fn draw_path<S: BackendStyle, I: IntoIterator<Item = BackendCoord>>( &mut self, path: I, style: &S ) -> Result<(), DrawingErrorKind<Self::ErrorType>>
Draw a path on the drawing backend Read more
fn fill_polygon<S: BackendStyle, I: IntoIterator<Item = BackendCoord>>( &mut self, path: I, style: &S ) -> Result<(), DrawingErrorKind<Self::ErrorType>>
source§fn draw_circle<S: BackendStyle>(
&mut self,
center: BackendCoord,
radius: u32,
style: &S,
fill: bool
) -> Result<(), DrawingErrorKind<Self::ErrorType>>
fn draw_circle<S: BackendStyle>( &mut self, center: BackendCoord, radius: u32, style: &S, fill: bool ) -> Result<(), DrawingErrorKind<Self::ErrorType>>
Draw a circle on the drawing backend Read more
source§fn estimate_text_size<S: BackendTextStyle>(
&self,
text: &str,
font: &S
) -> Result<(u32, u32), DrawingErrorKind<Self::ErrorType>>
fn estimate_text_size<S: BackendTextStyle>( &self, text: &str, font: &S ) -> Result<(u32, u32), DrawingErrorKind<Self::ErrorType>>
Estimate the size of the horizontal text if rendered on this backend.
This is important because some of the backend may not have font ability.
Thus this allows those backend reports proper value rather than ask the
font rasterizer for that. Read more
source§fn draw_text<S: BackendTextStyle>(
&mut self,
text: &str,
style: &S,
pos: BackendCoord
) -> Result<(), DrawingErrorKind<Self::ErrorType>>
fn draw_text<S: BackendTextStyle>( &mut self, text: &str, style: &S, pos: BackendCoord ) -> Result<(), DrawingErrorKind<Self::ErrorType>>
Draw a text on the drawing backend Read more
Auto Trait Implementations§
impl<'a> Freeze for CairoBackend<'a>
impl<'a> RefUnwindSafe for CairoBackend<'a>
impl<'a> !Send for CairoBackend<'a>
impl<'a> !Sync for CairoBackend<'a>
impl<'a> Unpin for CairoBackend<'a>
impl<'a> UnwindSafe for CairoBackend<'a>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more