Struct gdk4::TextureDownloader

pub struct TextureDownloader { /* private fields */ }

Available on crate feature v4_10 only.

The TextureDownloader is used to download the contents of a Texture.

It is intended to be created as a short-term object for a single download, but can be used for multiple downloads of different textures or with different settings.

TextureDownloader can be used to convert data between different formats. Create a Texture for the existing format and then download it in a different format.

Implementations

impl TextureDownloader

pub fn as_ptr(&self) -> *mut GdkTextureDownloader

Return the inner pointer to the underlying C value.

pub unsafe fn from_glib_ptr_borrow<'a>( ptr: *const *const GdkTextureDownloader ) -> &'a Self

Borrows the underlying C value.

pub unsafe fn from_glib_ptr_borrow_mut<'a>( ptr: *mut *mut GdkTextureDownloader ) -> &'a mut Self

Borrows the underlying C value mutably.

impl TextureDownloader

pub fn new(texture: &impl IsA<Texture>) -> TextureDownloader

Creates a new texture downloader for @texture.

texture

texture to download

Returns

A new texture downloader

pub fn download_bytes(&self) -> (Bytes, usize)

Downloads the given texture pixels into a GBytes. The rowstride will be stored in the stride value.

This function will abort if it tries to download a large texture and fails to allocate memory. If you think that may happen, you should handle memory allocation yourself and use Gdk::TextureDownloader::download_into() once allocation succeeded.

Returns

The downloaded pixels

out_stride

The stride of the resulting data in bytes

pub fn format(&self) -> MemoryFormat

Gets the format that the data will be downloaded in.

Returns

The format of the download

pub fn texture(&self) -> Texture

Gets the texture that the downloader will download.

Returns

The texture to download

pub fn set_format(&mut self, format: MemoryFormat)

Sets the format the downloader will download.

By default, GDK_MEMORY_DEFAULT is set.

format

the format to use

pub fn set_texture(&mut self, texture: &impl IsA<Texture>)

Changes the texture the downloader will download.

texture

the new texture to download

Trait Implementations

impl Clone for TextureDownloader

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TextureDownloader

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

Formats the value using the given formatter.

impl From<TextureDownloader> for Value

fn from(o: TextureDownloader) -> Self

Converts to this type from the input type.

impl HasParamSpec for TextureDownloader

type ParamSpec = ParamSpecBoxed

type SetValue = TextureDownloader

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str) -> ParamSpecBoxedBuilder<'_, TextureDownloader>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for TextureDownloader

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for TextureDownloader

fn cmp(&self, other: &TextureDownloader) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for TextureDownloader

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for TextureDownloader

fn partial_cmp(&self, other: &TextureDownloader) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for TextureDownloader

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for TextureDownloader

impl StructuralPartialEq for TextureDownloader