Struct gdk4::DragSurface
source · pub struct DragSurface { /* private fields */ }
Expand description
A DragSurface
is an interface for surfaces used during DND.
§Signals
§compute-size
Emitted when the size for the surface needs to be computed, when it is present.
This signal will normally be emitted during the native surface layout cycle when the surface size needs to be recomputed.
It is the responsibility of the drag surface user to handle this signal
and compute the desired size of the surface, storing the computed size
in the DragSurfaceSize
object that is passed to the signal
handler, using DragSurfaceSize::set_size()
.
Failing to set a size so will result in an arbitrary size being used as a result.
Surface
§enter-monitor
Emitted when @surface starts being present on the monitor.
§event
Emitted when GDK receives an input event for @surface.
§layout
Emitted when the size of @surface is changed, or when relayout should be performed.
Surface size is reported in ”application pixels”, not ”device pixels” (see gdk_surface_get_scale_factor()).
§leave-monitor
Emitted when @surface stops being present on the monitor.
§render
Emitted when part of the surface needs to be redrawn.
§Implements
DragSurfaceExt
, SurfaceExt
, DragSurfaceExtManual
, SurfaceExtManual
GLib type: GObject with reference counted clone semantics.
Implementations§
source§impl DragSurface
impl DragSurface
pub const NONE: Option<&'static DragSurface> = None
Trait Implementations§
source§impl Clone for DragSurface
impl Clone for DragSurface
source§impl Debug for DragSurface
impl Debug for DragSurface
source§impl HasParamSpec for DragSurface
impl HasParamSpec for DragSurface
type ParamSpec = ParamSpecObject
§type SetValue = DragSurface
type SetValue = DragSurface
type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, DragSurface>
fn param_spec_builder() -> Self::BuilderFn
source§impl Hash for DragSurface
impl Hash for DragSurface
source§impl Ord for DragSurface
impl Ord for DragSurface
source§fn cmp(&self, other: &Self) -> Ordering
fn cmp(&self, other: &Self) -> Ordering
Comparison for two GObjects.
Compares the memory addresses of the provided objects.
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl<OT: ObjectType> PartialEq<OT> for DragSurface
impl<OT: ObjectType> PartialEq<OT> for DragSurface
source§impl<OT: ObjectType> PartialOrd<OT> for DragSurface
impl<OT: ObjectType> PartialOrd<OT> for DragSurface
source§impl StaticType for DragSurface
impl StaticType for DragSurface
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for DragSurface
impl IsA<Surface> for DragSurface
Auto Trait Implementations§
impl Freeze for DragSurface
impl RefUnwindSafe for DragSurface
impl !Send for DragSurface
impl !Sync for DragSurface
impl Unpin for DragSurface
impl UnwindSafe for DragSurface
Blanket Implementations§
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T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
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fn borrow_mut(&mut self) -> &mut T
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source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)source§impl<O> DragSurfaceExt for Owhere
O: IsA<DragSurface>,
impl<O> DragSurfaceExt for Owhere
O: IsA<DragSurface>,
source§impl<O> DragSurfaceExtManual for Owhere
O: IsA<DragSurface>,
impl<O> DragSurfaceExtManual for Owhere
O: IsA<DragSurface>,
source§fn connect_compute_size<F: Fn(&DragSurface, &mut DragSurfaceSize) + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_compute_size<F: Fn(&DragSurface, &mut DragSurfaceSize) + 'static>( &self, f: F, ) -> SignalHandlerId
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source§impl<O> SurfaceExt for O
impl<O> SurfaceExt for O
source§fn create_cairo_context(&self) -> CairoContext
fn create_cairo_context(&self) -> CairoContext
CairoContext
for rendering on @self. Read moresource§fn create_vulkan_context(&self) -> Result<VulkanContext, Error>
fn create_vulkan_context(&self) -> Result<VulkanContext, Error>
fn destroy(&self)
source§fn device_position(
&self,
device: &impl IsA<Device>,
) -> Option<(f64, f64, ModifierType)>
fn device_position( &self, device: &impl IsA<Device>, ) -> Option<(f64, f64, ModifierType)>
source§fn frame_clock(&self) -> FrameClock
fn frame_clock(&self) -> FrameClock
source§fn scale(&self) -> f64
fn scale(&self) -> f64
v4_12
only.source§fn scale_factor(&self) -> i32
fn scale_factor(&self) -> i32
source§fn is_destroyed(&self) -> bool
fn is_destroyed(&self) -> bool
source§fn queue_render(&self)
fn queue_render(&self)
source§fn request_layout(&self)
fn request_layout(&self)
source§fn set_cursor(&self, cursor: Option<&Cursor>)
fn set_cursor(&self, cursor: Option<&Cursor>)
source§fn set_input_region(&self, region: &Region)
fn set_input_region(&self, region: &Region)
source§fn set_opaque_region(&self, region: Option<&Region>)
fn set_opaque_region(&self, region: Option<&Region>)
source§fn connect_enter_monitor<F: Fn(&Self, &Monitor) + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_enter_monitor<F: Fn(&Self, &Monitor) + 'static>( &self, f: F, ) -> SignalHandlerId
source§fn connect_event<F: Fn(&Self, &Event) -> bool + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_event<F: Fn(&Self, &Event) -> bool + 'static>( &self, f: F, ) -> SignalHandlerId
source§fn connect_layout<F: Fn(&Self, i32, i32) + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_layout<F: Fn(&Self, i32, i32) + 'static>( &self, f: F, ) -> SignalHandlerId
source§fn connect_leave_monitor<F: Fn(&Self, &Monitor) + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_leave_monitor<F: Fn(&Self, &Monitor) + 'static>( &self, f: F, ) -> SignalHandlerId
source§fn connect_render<F: Fn(&Self, &Region) -> bool + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_render<F: Fn(&Self, &Region) -> bool + 'static>( &self, f: F, ) -> SignalHandlerId
fn connect_cursor_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_height_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_mapped_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
source§fn connect_scale_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_scale_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
v4_12
only.