Struct gdk4::GLTextureBuilder

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#[repr(transparent)]
pub struct GLTextureBuilder { /* private fields */ }
Available on crate feature v4_12 only.
Expand description

GLTextureBuilder is a buider used to construct Texture objects from GL textures.

The operation is quite simple: Create a texture builder, set all the necessary properties - keep in mind that the properties context, id, width, and height are mandatory - and then call build() to create the new texture.

GLTextureBuilder can be used for quick one-shot construction of textures as well as kept around and reused to construct multiple textures.

Properties

context

The context owning the texture.

Readable | Writeable

format

The format when downloading the texture.

Readable | Writeable

has-mipmap

If the texture has a mipmap.

Readable | Writeable

height

The height of the texture.

Readable | Writeable

id

The texture ID to use.

Readable | Writeable

sync

An optional GLSync object.

If this is set, GTK will wait on it before using the texture.

Readable | Writeable

update-region

The update region for update-texture.

Readable | Writeable

update-texture

The texture update-region is an update for.

Readable | Writeable

width

The width of the texture.

Readable | Writeable

Implementations§

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impl GLTextureBuilder

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pub fn new() -> GLTextureBuilder

Creates a new texture builder.

Returns

the new GdkTextureBuilder

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pub fn context(&self) -> Option<GLContext>

Gets the context previously set via gdk_gl_texture_builder_set_context() or None if none was set.

Returns

The context

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pub fn format(&self) -> MemoryFormat

Gets the format previously set via gdk_gl_texture_builder_set_format().

Returns

The format

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pub fn has_mipmap(&self) -> bool

Gets whether the texture has a mipmap.

Returns

Whether the texture has a mipmap

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pub fn height(&self) -> i32

Gets the height previously set via gdk_gl_texture_builder_set_height() or 0 if the height wasn’t set.

Returns

The height

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pub fn id(&self) -> u32

Gets the texture id previously set via gdk_gl_texture_builder_set_id() or 0 if the id wasn’t set.

Returns

The id

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pub fn update_region(&self) -> Option<Region>

Gets the region previously set via gdk_gl_texture_builder_set_update_region() or None if none was set.

Returns

The region

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pub fn update_texture(&self) -> Option<Texture>

Gets the texture previously set via gdk_gl_texture_builder_set_update_texture() or None if none was set.

Returns

The texture

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pub fn width(&self) -> i32

Gets the width previously set via gdk_gl_texture_builder_set_width() or 0 if the width wasn’t set.

Returns

The width

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impl GLTextureBuilder

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pub unsafe fn build(self) -> Texture

Builds a new Texture with the values set up in the builder.

The destroy function gets called when the returned texture gets released; either when the texture is finalized or by an explicit call to GLTexture::release(). It should release all GL resources associated with the texture, such as the id and the sync.

Note that it is a programming error to call this function if any mandatory property has not been set.

It is possible to call this function multiple times to create multiple textures, possibly with changing properties in between.

Returns

a newly built Texture

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pub unsafe fn build_with_release_func<F: FnOnce() + 'static>( self, release_func: F ) -> Texture

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pub fn set_context(self, context: Option<&impl IsA<GLContext>>) -> Self

Sets the context to be used for the texture. This is the context that owns the texture.

The context must be set before calling build().

context

The context the texture beongs to or None to unset

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pub fn set_format(self, format: MemoryFormat) -> Self

Sets the format of the texture. The default is GDK_MEMORY_R8G8B8A8_PREMULTIPLIED.

The format is the preferred format the texture data should be downloaded to. The format must be supported by the GL version of context.

GDK’s texture download code assumes that the format corresponds to the storage parameters of the GL texture in an obvious way. For example, a format of GDK_MEMORY_R16G16B16A16_PREMULTIPLIED is expected to be stored as GL_RGBA16 texture, and GDK_MEMORY_G8A8 is expected to be stored as GL_RG8 texture.

Setting the right format is particularly useful when using high bit depth textures to preserve the bit depth, to set the correct value for unpremultiplied textures and to make sure opaque textures are treated as such.

Non-RGBA textures need to have swizzling parameters set up properly to be usable in GSK’s shaders.

format

The texture’s format

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pub fn set_has_mipmap(self, has_mipmap: bool) -> Self

Sets whether the texture has a mipmap. This allows the renderer and other users of the generated texture to use a higher quality downscaling.

Typically, the glGenerateMipmap function is used to generate a mimap.

has_mipmap

Whether the texture has a mipmap

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pub fn set_height(self, height: i32) -> Self

Sets the height of the texture.

The height must be set before calling build().

height

The texture’s height or 0 to unset

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pub fn set_id(self, id: u32) -> Self

Sets the texture id of the texture. The texture id must remain unmodified until the texture was finalized. See build() for a longer discussion.

The id must be set before calling build().

id

The texture id to be used for creating the texture

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pub fn set_update_region(self, region: Option<&Region>) -> Self

Sets the region to be updated by this texture. Together with update-texture this describes an update of a previous texture.

When rendering animations of large textures, it is possible that consecutive textures are only updating contents in parts of the texture. It is then possible to describe this update via these two properties, so that GTK can avoid rerendering parts that did not change.

An example would be a screen recording where only the mouse pointer moves.

region

the region to update

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pub fn set_update_texture(self, texture: Option<&impl IsA<Texture>>) -> Self

Sets the texture to be updated by this texture. See set_update_region() for an explanation.

texture

the texture to update

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pub fn set_width(self, width: i32) -> Self

Sets the width of the texture.

The width must be set before calling build().

width

The texture’s width or 0 to unset

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pub fn sync(&self) -> Option<GLsync>

Gets the GLsync previously set via gdk_gl_texture_builder_set_sync().

Returns

the GLSync

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pub fn set_sync(self, sync: Option<GLsync>) -> Self

Sets the GLSync object to use for the texture.

GTK will wait on this object before using the created Texture.

The destroy function that is passed to build() is responsible for freeing the sync object when it is no longer needed. The texture builder does not destroy it and it is the callers responsibility to make sure it doesn’t leak.

sync

the GLSync object

Trait Implementations§

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impl Clone for GLTextureBuilder

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for GLTextureBuilder

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

Formats the value using the given formatter. Read more
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impl Default for GLTextureBuilder

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Display for GLTextureBuilder

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

Formats the value using the given formatter. Read more
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impl HasParamSpec for GLTextureBuilder

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type ParamSpec = ParamSpecObject

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type SetValue = GLTextureBuilder

Preferred value to be used as setter for the associated ParamSpec.
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type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, GLTextureBuilder>

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for GLTextureBuilder

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for GLTextureBuilder

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
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impl ParentClassIs for GLTextureBuilder

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impl<OT: ObjectType> PartialEq<OT> for GLTextureBuilder

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

This method tests for self and other values to be equal, and is used by ==.
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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.
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impl<OT: ObjectType> PartialOrd<OT> for GLTextureBuilder

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

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

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for GLTextureBuilder

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impl Send for GLTextureBuilder

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impl Sync for GLTextureBuilder

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Immutably borrows from an owned value. Read more
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unsafe fn from_glib_full_num_as_vec( ptr: *mut GPtrArray, num: usize ) -> Vec<T, Global>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_container_num_as_vec( ptr: *mut GSList, num: usize ) -> Vec<T, Global>

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unsafe fn from_glib_full_num_as_vec( ptr: *mut GSList, num: usize ) -> Vec<T, Global>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_container_as_vec(ptr: *mut GPtrArray) -> Vec<T, Global>

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unsafe fn from_glib_full_as_vec(ptr: *mut GPtrArray) -> Vec<T, Global>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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Returns true if the object is an instance of (can be cast to) T.
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Returns the type of the object.
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fn object_class(&self) -> &Class<Object>

Returns the ObjectClass of the object. Read more
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Returns the class of the object.
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Returns the class of the object in the given type T. Read more
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Returns the interface T of the object. Read more
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fn set_property(&self, property_name: &str, value: impl Into<Value>)

Sets the property property_name of the object to value value. Read more
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fn set_property_from_value(&self, property_name: &str, value: &Value)

Sets the property property_name of the object to value value. Read more
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fn set_properties(&self, property_values: &[(&str, &dyn ToValue)])

Sets multiple properties of the object at once. Read more
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fn set_properties_from_value(&self, property_values: &[(&str, Value)])

Sets multiple properties of the object at once. Read more
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fn property<V>(&self, property_name: &str) -> Vwhere V: for<'b> FromValue<'b> + 'static,

Gets the property property_name of the object and cast it to the type V. Read more
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Gets the property property_name of the object. Read more
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fn has_property(&self, property_name: &str, type_: Option<Type>) -> bool

Check if the object has a property property_name of the given type_. Read more
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Get the type of the property property_name of this object. Read more
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fn find_property(&self, property_name: &str) -> Option<ParamSpec>

Get the ParamSpec of the property property_name of this object.
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fn list_properties(&self) -> PtrSlice<ParamSpec>

Return all ParamSpec of the properties of this object.
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fn freeze_notify(&self) -> PropertyNotificationFreezeGuard

Freeze all property notifications until the return guard object is dropped. Read more
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unsafe fn set_qdata<QD>(&self, key: Quark, value: QD)where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>>where QD: 'static,

Return previously set arbitrary data of this object with the given key. Read more
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Retrieve previously set arbitrary data of this object with the given key. Read more
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Set arbitrary data on this object with the given key. Read more
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Return previously set arbitrary data of this object with the given key. Read more
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Retrieve previously set arbitrary data of this object with the given key. Read more
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fn block_signal(&self, handler_id: &SignalHandlerId)

Block a given signal handler. Read more
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fn unblock_signal(&self, handler_id: &SignalHandlerId)

Unblock a given signal handler.
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fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)

Stop emission of the currently emitted signal.
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fn stop_signal_emission_by_name(&self, signal_name: &str)

Stop emission of the currently emitted signal by the (possibly detailed) signal name.
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fn connect<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerIdwhere F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_name on this object. Read more
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fn connect_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerIdwhere F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_id on this object. Read more
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Connect to the signal signal_name on this object. Read more
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Connect to the signal signal_id on this object. Read more
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unsafe fn connect_unsafe<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerIdwhere F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_name on this object. Read more
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unsafe fn connect_unsafe_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerIdwhere F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_id on this object. Read more
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Connect a closure to the signal signal_name on this object. Read more
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Connect a closure to the signal signal_id on this object. Read more
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fn watch_closure(&self, closure: &impl AsRef<Closure>)

Limits the lifetime of closure to the lifetime of the object. When the object’s reference count drops to zero, the closure will be invalidated. An invalidated closure will ignore any calls to invoke_with_values, or invoke when using Rust closures.
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fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> Rwhere R: TryFromClosureReturnValue,

Emit signal by signal id. Read more
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fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>

Same as Self::emit but takes Value for the arguments.
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Emit signal by its name. Read more
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Emit signal by its name. Read more
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fn emit_by_name_with_details<R>( &self, signal_name: &str, details: Quark, args: &[&dyn ToValue] ) -> Rwhere R: TryFromClosureReturnValue,

Emit signal by its name with details. Read more
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fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by its name with details. Read more
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Emit signal by signal id with details. Read more
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fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by signal id with details. Read more
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fn disconnect(&self, handler_id: SignalHandlerId)

Disconnect a previously connected signal handler.
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fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + Send + Sync + 'static,

Connect to the notify signal of the object. Read more
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fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + 'static,

Connect to the notify signal of the object. Read more
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unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec),

Connect to the notify signal of the object. Read more
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fn notify(&self, property_name: &str)

Notify that the given property has changed its value. Read more
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fn notify_by_pspec(&self, pspec: &ParamSpec)

Notify that the given property has changed its value. Read more
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fn downgrade(&self) -> WeakRef<T>

Downgrade this object to a weak reference.
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fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>where F: FnOnce() + Send + 'static,

Add a callback to be notified when the Object is disposed.
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fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>where F: FnOnce() + 'static,

Add a callback to be notified when the Object is disposed. Read more
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fn bind_property<'f, 't, O, 'a>( &'a self, source_property: &'a str, target: &'a O, target_property: &'a str ) -> BindingBuilder<'a, 'f, 't>where O: ObjectType,

Bind property source_property on this object to the target_property on the target object. Read more
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fn ref_count(&self) -> u32

Returns the strong reference count of this object.
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unsafe fn run_dispose(&self)

Runs the dispose mechanism of the object. Read more
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impl<T> Property for Twhere T: HasParamSpec,

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type Value = T

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impl<T> PropertyGet for Twhere T: HasParamSpec,

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type Value = T

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fn get<R, F>(&self, f: F) -> Rwhere F: Fn(&<T as PropertyGet>::Value) -> R,

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impl<T> StaticTypeExt for Twhere T: StaticType,

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fn ensure_type()

Ensures that the type has been registered with the type system.
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToSendValue for Twhere T: Send + ToValue + ?Sized,

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fn to_send_value(&self) -> SendValue

Returns a SendValue clone of self.
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impl<T> ToString for Twhere T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T> TransparentType for Twhere T: TransparentPtrType,

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromClosureReturnValue for Twhere T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<'a, T, C, E> FromValueOptional<'a> for Twhere T: FromValue<'a, Checker = C>, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>, E: Error + Send + 'static,

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impl<Super, Sub> MayDowncastTo<Sub> for Superwhere Super: IsA<Super>, Sub: IsA<Super>,