pub struct Canvas(/* private fields */);
Implementations§
Source§impl Canvas
impl Canvas
Sourcepub fn new() -> Option<Content>
pub fn new() -> Option<Content>
Creates a new instance of Canvas
.
You should call CanvasExt::set_size
to set the size of the canvas.
You should call Content::invalidate
every time you wish to
draw the contents of the canvas.
§Returns
The newly allocated instance of
Canvas
. Use gobject::ObjectExt::unref
when done.
Trait Implementations§
Source§impl Ord for Canvas
impl Ord for Canvas
Source§impl<T: ObjectType> PartialEq<T> for Canvas
impl<T: ObjectType> PartialEq<T> for Canvas
Source§impl<T: ObjectType> PartialOrd<T> for Canvas
impl<T: ObjectType> PartialOrd<T> for Canvas
Source§impl StaticType for Canvas
impl StaticType for Canvas
Source§fn static_type() -> Type
fn static_type() -> Type
Returns the type identifier of
Self
.impl Eq for Canvas
impl IsA<Content> for Canvas
Auto Trait Implementations§
impl Freeze for Canvas
impl RefUnwindSafe for Canvas
impl !Send for Canvas
impl !Sync for Canvas
impl Unpin for Canvas
impl UnwindSafe for Canvas
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
Source§impl<O> CanvasExt for O
impl<O> CanvasExt for O
Source§fn get_scale_factor(&self) -> i32
fn get_scale_factor(&self) -> i32
Source§fn set_scale_factor(&self, scale: i32)
fn set_scale_factor(&self, scale: i32)
Sets the scaling factor for the Cairo surface used by
self
. Read moreSource§fn set_size(&self, width: i32, height: i32) -> bool
fn set_size(&self, width: i32, height: i32) -> bool
Sets the size of the
self
, and invalidates the content. Read moreSource§fn get_property_height(&self) -> i32
fn get_property_height(&self) -> i32
The height of the canvas.
Source§fn set_property_height(&self, height: i32)
fn set_property_height(&self, height: i32)
The height of the canvas.
Source§fn get_property_scale_factor_set(&self) -> bool
fn get_property_scale_factor_set(&self) -> bool
Whether the
Canvas:scale-factor
property is set. Read moreSource§fn get_property_width(&self) -> i32
fn get_property_width(&self) -> i32
The width of the canvas.
Source§fn set_property_width(&self, width: i32)
fn set_property_width(&self, width: i32)
The width of the canvas.
Source§fn connect_draw<F>(&self, f: F) -> SignalHandlerId
fn connect_draw<F>(&self, f: F) -> SignalHandlerId
The
Canvas::draw
signal is emitted each time a canvas is
invalidated. Read morefn connect_property_height_notify<F>(&self, f: F) -> SignalHandlerId
fn connect_property_scale_factor_notify<F>(&self, f: F) -> SignalHandlerId
fn connect_property_scale_factor_set_notify<F>(&self, f: F) -> SignalHandlerId
fn connect_property_width_notify<F>(&self, f: F) -> SignalHandlerId
Source§impl<T> Cast for Twhere
T: ObjectType,
impl<T> Cast for Twhere
T: ObjectType,
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fn dynamic_cast_ref<T>(&self) -> Option<&T>where
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. This handles upcasting, downcasting
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unsafe fn unsafe_cast_ref<T>(&self) -> &Twhere
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Source§impl<O> ContentExt for O
impl<O> ContentExt for O
Source§fn get_preferred_size(&self) -> Option<(f32, f32)>
fn get_preferred_size(&self) -> Option<(f32, f32)>
Retrieves the natural size of the
self
, if any. Read moreSource§fn invalidate(&self)
fn invalidate(&self)
Invalidates a
Content
. Read moreSource§fn connect_attached<F>(&self, f: F) -> SignalHandlerId
fn connect_attached<F>(&self, f: F) -> SignalHandlerId
Source§fn connect_detached<F>(&self, f: F) -> SignalHandlerId
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