NewViewport : crop and scale interface to a wl_surface An additional interface to a wl_surface object, which allows the client to specify the cropping and scaling of the surface contents.

NewViewporter : surface cropping and scaling The global interface exposing surface cropping and scaling capabilities is used to instantiate an interface extension for a wl_surface object.

ViewporterErrorViewportExists : the surface already has a viewport object associated.

ViewportErrorBadSize : destination size is not integer.

ViewportErrorBadValue : negative or zero values in width or height.

ViewportErrorNoSurface : the wl_surface was destroyed.

ViewportErrorOutOfBuffer : source rectangle extends outside of the content area.

Viewport : crop and scale interface to a wl_surface An additional interface to a wl_surface object, which allows the client to specify the cropping and scaling of the surface contents.

Viewporter : surface cropping and scaling The global interface exposing surface cropping and scaling capabilities is used to instantiate an interface extension for a wl_surface object.