Function XdgToplevel.setMaxSize
set the maximum size
void setMaxSize
(
int width,
int height
);
Set a maximum size for the window.
The client can specify a maximum size so that the compositor does not try to configure the window beyond this size.
The width and height arguments are in window geometry coordinates. See xdg_surface.set_window_geometry.
Values set in this way are double-buffered. They will get applied on the next commit.
The compositor can use this information to allow or disallow different states like maximize or fullscreen and draw accurate animations.
Similarly, a tiling window manager may use this information to place and resize client windows in a more effective way.
The client should not rely on the compositor to obey the maximum size. The compositor may decide to ignore the values set by the client and request a larger size.
If never set, or a value of zero in the request, means that the client has no expected maximum size in the given dimension. As a result, a client wishing to reset the maximum size to an unspecified state can use zero for width and height in the request.
Requesting a maximum size to be smaller than the minimum size of a surface is illegal and will result in a protocol error.
The width and height must be greater than or equal to zero. Using strictly negative values for width and height will result in a protocol error.