Trait gdk4::prelude::DisplayExt
source · pub trait DisplayExt: 'static {
Show 31 methods
fn beep(&self);
fn close(&self);
fn create_gl_context(&self) -> Result<GLContext, Error>;
fn device_is_grabbed(&self, device: &impl IsA<Device>) -> bool;
fn flush(&self);
fn app_launch_context(&self) -> AppLaunchContext;
fn clipboard(&self) -> Clipboard;
fn default_seat(&self) -> Option<Seat>;
fn monitor_at_surface(&self, surface: &impl IsA<Surface>) -> Monitor;
fn monitors(&self) -> ListModel;
fn name(&self) -> GString;
fn primary_clipboard(&self) -> Clipboard;
fn startup_notification_id(&self) -> Option<GString>;
fn is_closed(&self) -> bool;
fn is_composited(&self) -> bool;
fn is_rgba(&self) -> bool;
fn list_seats(&self) -> Vec<Seat>;
fn notify_startup_complete(&self, startup_id: &str);
fn prepare_gl(&self) -> Result<(), Error>;
fn put_event(&self, event: impl AsRef<Event>);
fn supports_input_shapes(&self) -> bool;
fn sync(&self);
fn is_input_shapes(&self) -> bool;
fn connect_closed<F: Fn(&Self, bool) + 'static>(
&self,
f: F
) -> SignalHandlerId;
fn connect_opened<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
fn connect_seat_added<F: Fn(&Self, &Seat) + 'static>(
&self,
f: F
) -> SignalHandlerId;
fn connect_seat_removed<F: Fn(&Self, &Seat) + 'static>(
&self,
f: F
) -> SignalHandlerId;
fn connect_setting_changed<F: Fn(&Self, &str) + 'static>(
&self,
f: F
) -> SignalHandlerId;
fn connect_composited_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId;
fn connect_input_shapes_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId;
fn connect_rgba_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId;
}Expand description
Required Methods§
sourcefn close(&self)
fn close(&self)
Closes the connection to the windowing system for the given display.
This cleans up associated resources.
sourcefn create_gl_context(&self) -> Result<GLContext, Error>
fn create_gl_context(&self) -> Result<GLContext, Error>
v4_6 only.Creates a new GLContext for the Display.
The context is disconnected from any particular surface or surface and cannot be used to draw to any surface. It can only be used to draw to non-surface framebuffers like textures.
If the creation of the GLContext failed, @error will be set.
Before using the returned GLContext, you will need to
call GLContextExt::make_current() or GLContextExt::realize().
Returns
the newly created GLContext
sourcefn device_is_grabbed(&self, device: &impl IsA<Device>) -> bool
fn device_is_grabbed(&self, device: &impl IsA<Device>) -> bool
sourcefn flush(&self)
fn flush(&self)
Flushes any requests queued for the windowing system.
This happens automatically when the main loop blocks waiting for new events, but if your application is drawing without returning control to the main loop, you may need to call this function explicitly. A common case where this function needs to be called is when an application is executing drawing commands from a thread other than the thread where the main loop is running.
This is most useful for X11. On windowing systems where requests are handled synchronously, this function will do nothing.
sourcefn app_launch_context(&self) -> AppLaunchContext
fn app_launch_context(&self) -> AppLaunchContext
Returns a AppLaunchContext suitable for launching
applications on the given display.
Returns
a new AppLaunchContext for @self
sourcefn default_seat(&self) -> Option<Seat>
fn default_seat(&self) -> Option<Seat>
sourcefn monitor_at_surface(&self, surface: &impl IsA<Surface>) -> Monitor
fn monitor_at_surface(&self, surface: &impl IsA<Surface>) -> Monitor
sourcefn name(&self) -> GString
fn name(&self) -> GString
Gets the name of the display.
Returns
a string representing the display name. This string is owned by GDK and should not be modified or freed.
sourcefn primary_clipboard(&self) -> Clipboard
fn primary_clipboard(&self) -> Clipboard
Gets the clipboard used for the primary selection.
On backends where the primary clipboard is not supported natively, GDK emulates this clipboard locally.
Returns
the primary clipboard
sourcefn startup_notification_id(&self) -> Option<GString>
fn startup_notification_id(&self) -> Option<GString>
sourcefn is_composited(&self) -> bool
fn is_composited(&self) -> bool
Returns whether surfaces can reasonably be expected to have their alpha channel drawn correctly on the screen.
Check is_rgba() for whether the display
supports an alpha channel.
On X11 this function returns whether a compositing manager is compositing on @self.
On modern displays, this value is always true.
Returns
Whether surfaces with RGBA visuals can reasonably be expected to have their alpha channels drawn correctly on the screen.
sourcefn is_rgba(&self) -> bool
fn is_rgba(&self) -> bool
Returns whether surfaces on this @self are created with an alpha channel.
Even if a true is returned, it is possible that the
surface’s alpha channel won’t be honored when displaying the
surface on the screen: in particular, for X an appropriate
windowing manager and compositing manager must be running to
provide appropriate display. Use is_composited()
to check if that is the case.
On modern displays, this value is always true.
Returns
true if surfaces are created with an alpha channel or
false if the display does not support this functionality.
sourcefn list_seats(&self) -> Vec<Seat>
fn list_seats(&self) -> Vec<Seat>
sourcefn notify_startup_complete(&self, startup_id: &str)
fn notify_startup_complete(&self, startup_id: &str)
Indicates to the GUI environment that the application has finished loading, using a given identifier.
GTK will call this function automatically for Gtk::Window
with custom startup-notification identifier unless
Gtk::Window::set_auto_startup_notification()
is called to disable that feature.
startup_id
a startup-notification identifier, for which notification process should be completed
sourcefn prepare_gl(&self) -> Result<(), Error>
fn prepare_gl(&self) -> Result<(), Error>
v4_4 only.Checks that OpenGL is available for @self and ensures that it is
properly initialized.
When this fails, an @error will be set describing the error and this
function returns false.
Note that even if this function succeeds, creating a GLContext
may still fail.
This function is idempotent. Calling it multiple times will just return the same value or error.
You never need to call this function, GDK will call it automatically as needed. But you can use it as a check when setting up code that might make use of OpenGL.
Returns
true if the display supports OpenGL