Struct SvgSurface

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

Available on crate feature svg only.

Implementations

impl SvgSurface

pub unsafe fn from_raw_full( ptr: *mut cairo_surface_t, ) -> Result<SvgSurface, Error>

pub unsafe fn from_raw_none( ptr: *mut cairo_surface_t, ) -> Result<SvgSurface, Error>

impl SvgSurface

pub fn new<P: AsRef<Path>>( width: f64, height: f64, path: Option<P>, ) -> Result<SvgSurface, Error>

pub fn for_stream<W: Write + 'static>( width: f64, height: f64, stream: W, ) -> Result<Self, Error>

Takes full ownership of the output stream, which is not allowed to borrow any lifetime shorter than 'static.

Because the underlying cairo_surface_t is reference-counted, a lifetime parameter in a Rust wrapper type would not be enough to track how long it can keep writing to the stream.

pub unsafe fn for_raw_stream<W: Write + 'static>( width: f64, height: f64, stream: *mut W, ) -> Result<Self, Error>

Allows writing to a borrowed stream. The lifetime of the borrow is not tracked.

Safety

The value that stream points to must live at least until the underlying cairo_surface_t (which maybe be longer then the Rust PdfSurface wrapper, because of reference-counting), or until the output stream is removed from the surface with Surface::finish_output_stream.

Since the former is hard to track for sure, the latter is strongly recommended. The concrete type behind the Box<dyn Any> value returned by finish_output_stream is private, so you won’t be able to downcast it. But removing it anyway ensures that later writes do not go through a dangling pointer.

pub fn versions() -> impl Iterator<Item = SvgVersion>

pub fn restrict(&self, version: SvgVersion)

pub fn set_document_unit(&mut self, unit: SvgUnit)

Available on crate feature v1_16 only.

pub fn document_unit(&self) -> SvgUnit

Available on crate feature v1_16 only.

Methods from Deref<Target = Surface>

pub fn to_raw_none(&self) -> *mut cairo_surface_t

pub fn create_similar( &self, content: Content, width: i32, height: i32, ) -> Result<Surface, Error>

pub fn create_for_rectangle(&self, bounds: Rectangle) -> Result<Surface, Error>

pub fn mime_data(&self, mime_type: &str) -> Option<Vec<u8>>

pub unsafe fn mime_data_raw(&self, mime_type: &str) -> Option<&[u8]>

pub fn set_mime_data<T: AsRef<[u8]> + 'static>( &self, mime_type: &str, slice: T, ) -> Result<(), Error>

pub fn supports_mime_type(&self, mime_type: &str) -> bool

pub fn device(&self) -> Option<Device>

pub fn content(&self) -> Content

pub fn set_device_offset(&self, x_offset: f64, y_offset: f64)

pub fn device_offset(&self) -> (f64, f64)

pub fn set_device_scale(&self, x_scale: f64, y_scale: f64)

pub fn device_scale(&self) -> (f64, f64)

pub fn set_fallback_resolution( &self, x_pixels_per_inch: f64, y_pixels_per_inch: f64, )

pub fn fallback_resolution(&self) -> (f64, f64)

pub fn create_similar_image( &self, format: Format, width: i32, height: i32, ) -> Result<ImageSurface, Error>

pub fn map_to_image( &self, extents: Option<RectangleInt>, ) -> Result<MappedImageSurface, Error>

pub fn mark_dirty(&self)

pub fn mark_dirty_rectangle(&self, x: i32, y: i32, width: i32, height: i32)

pub fn status(&self) -> Result<(), Error>

pub fn set_user_data<T: 'static>( &self, key: &'static UserDataKey<T>, value: Rc<T>, ) -> Result<(), Error>

Attach user data to self for the given key.

pub fn user_data<T: 'static>( &self, key: &'static UserDataKey<T>, ) -> Option<Rc<T>>

Return the user data previously attached to self with the given key, if any.

pub fn user_data_ptr<T: 'static>( &self, key: &'static UserDataKey<T>, ) -> Option<NonNull<T>>

Return the user data previously attached to self with the given key, if any, without incrementing the reference count.

The pointer is valid when it is returned from this method, until the cairo object that self represents is destroyed or remove_user_data or set_user_data is called with the same key.

pub fn remove_user_data<T: 'static>( &self, key: &'static UserDataKey<T>, ) -> Result<(), Error>

Unattached from self the user data associated with key, if any. If there is no other Rc strong reference, the data is destroyed.

pub fn flush(&self)

pub fn finish(&self)

pub fn type_(&self) -> SurfaceType

pub fn write_to_png<W: Write>(&self, stream: &mut W) -> Result<(), IoError>

This function writes the surface as a PNG image to the given stream.

If the underlying surface does not support being written as a PNG, this will return Error::SurfaceTypeMismatch

pub fn finish_output_stream(&self) -> Result<Box<dyn Any>, StreamWithError>

Finish the surface, then remove and return the output stream if any.

This calls Surface::finish, to make sure pending writes are done.

This is relevant for surfaces created for example with crate::PdfSurface::for_stream.

Use Box::downcast to recover the concrete stream type.

Panics

This method panics if:

• This method was already called for this surface, or
• This surface was not created with an output stream in the first place, or
• A previous write to this surface panicked, or
• A previous write happened while another write was ongoing, or
• A write is ongoing now.

The latter two cases can only occur with a pathological output stream type that accesses the same surface again from Write::write_all.

Trait Implementations

impl AsRef<Surface> for SvgSurface

fn as_ref(&self) -> &Surface

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for SvgSurface

fn clone(&self) -> SvgSurface

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SvgSurface

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

Formats the value using the given formatter.

impl Deref for SvgSurface

type Target = Surface

The resulting type after dereferencing.

fn deref(&self) -> &Surface

Dereferences the value.

impl From<SvgSurface> for Value

fn from(v: SvgSurface) -> Self

Converts to this type from the input type.

impl FromGlibPtrBorrow<*mut cairo_surface_t> for SvgSurface

unsafe fn from_glib_borrow(ptr: *mut cairo_surface_t) -> Borrowed<SvgSurface>

Safety

impl FromGlibPtrFull<*mut cairo_surface_t> for SvgSurface

unsafe fn from_glib_full(ptr: *mut cairo_surface_t) -> SvgSurface

Safety

impl FromGlibPtrNone<*mut cairo_surface_t> for SvgSurface

unsafe fn from_glib_none(ptr: *mut cairo_surface_t) -> SvgSurface

Safety

impl<'a> FromValue<'a> for &'a SvgSurface

type Checker = GenericValueTypeOrNoneChecker<&'a SvgSurface>

Value type checker.

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

impl<'a> FromValue<'a> for SvgSurface

type Checker = GenericValueTypeOrNoneChecker<SvgSurface>

Value type checker.

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

impl IntoGlibPtr<*mut cairo_surface_t> for SvgSurface

unsafe fn into_glib_ptr(self) -> *mut cairo_surface_t

Transfer: full.

impl StaticType for SvgSurface

fn static_type() -> Type

Returns the type identifier of Self.

impl<'a> ToGlibPtr<'a, *mut cairo_surface_t> for SvgSurface

type Storage = PhantomData<&'a Surface>

fn to_glib_none(&'a self) -> Stash<'a, *mut cairo_surface_t, Self>

Transfer: none.

fn to_glib_full(&self) -> *mut cairo_surface_t

Transfer: full.

fn to_glib_container(&'a self) -> Stash<'a, P, Self>

Transfer: container.

impl ToValue for SvgSurface

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifier of self.

impl ToValueOptional for SvgSurface

fn to_value_optional(s: Option<&Self>) -> Value

Convert an Option to a Value.

impl TryFrom<Surface> for SvgSurface

type Error = Surface

The type returned in the event of a conversion error.

fn try_from(surface: Surface) -> Result<SvgSurface, Surface>

Performs the conversion.

impl ValueType for SvgSurface

type Type = SvgSurface

Type to get the Type from.

impl ValueTypeOptional for SvgSurface