Enum Event

#[non_exhaustive]
pub enum Event {
    Configure {
        width: i32,
        height: i32,
        states: Vec<u8>,
    },
    Close,
    ConfigureBounds {
        width: i32,
        height: i32,
    },
    WmCapabilities {
        capabilities: Vec<u8>,
    },
}

Available on crate feature wayland and Linux only.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Configure

suggest a surface change

This configure event asks the client to resize its toplevel surface or to change its state. The configured state should not be applied immediately. See xdg_surface.configure for details.

The width and height arguments specify a hint to the window about how its surface should be resized in window geometry coordinates. See set_window_geometry.

If the width or height arguments are zero, it means the client should decide its own window dimension. This may happen when the compositor needs to configure the state of the surface but doesn’t have any information about any previous or expected dimension.

The states listed in the event specify how the width/height arguments should be interpreted, and possibly how it should be drawn.

Clients must send an ack_configure in response to this event. See xdg_surface.configure and xdg_surface.ack_configure for details.

Fields

width: i32

height: i32

states: Vec<u8>

Close

surface wants to be closed

The close event is sent by the compositor when the user wants the surface to be closed. This should be equivalent to the user clicking the close button in client-side decorations, if your application has any.

This is only a request that the user intends to close the window. The client may choose to ignore this request, or show a dialog to ask the user to save their data, etc.

ConfigureBounds

recommended window geometry bounds

The configure_bounds event may be sent prior to a xdg_toplevel.configure event to communicate the bounds a window geometry size is recommended to constrain to.

The passed width and height are in surface coordinate space. If width and height are 0, it means bounds is unknown and equivalent to as if no configure_bounds event was ever sent for this surface.

The bounds can for example correspond to the size of a monitor excluding any panels or other shell components, so that a surface isn’t created in a way that it cannot fit.

The bounds may change at any point, and in such a case, a new xdg_toplevel.configure_bounds will be sent, followed by xdg_toplevel.configure and xdg_surface.configure.

Only available since version 4 of the interface

Fields

width: i32

height: i32

WmCapabilities

compositor capabilities

This event advertises the capabilities supported by the compositor. If a capability isn’t supported, clients should hide or disable the UI elements that expose this functionality. For instance, if the compositor doesn’t advertise support for minimized toplevels, a button triggering the set_minimized request should not be displayed.

The compositor will ignore requests it doesn’t support. For instance, a compositor which doesn’t advertise support for minimized will ignore set_minimized requests.

Compositors must send this event once before the first xdg_surface.configure event. When the capabilities change, compositors must send this event again and then send an xdg_surface.configure event.

The configured state should not be applied immediately. See xdg_surface.configure for details.

The capabilities are sent as an array of 32-bit unsigned integers in native endianness.

Only available since version 5 of the interface

Fields

capabilities: Vec<u8>

array of 32-bit capabilities

Implementations

impl Event

pub fn opcode(&self) -> u16

Get the opcode number of this message

Trait Implementations

impl Debug for Event

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

Formats the value using the given formatter.