xdgoutput.go RawHistoryFolder

1package wayland
2
3import "github.com/bnema/nefercap/internal/ports"
4
5// zxdg_output_v1 gives the logical size of an output, which maps a logical
6// region onto buffer pixels when a region has to be cropped from the output
7// frame. It is optional: the current mode over the integer scale is the
8// fallback.
9
10// watchLogicalSize subscribes to the logical size of o.
11func (s *Source) watchLogicalSize(o *output) {
12	if s.xdgOutputs == nil {
13		return
14	}
15	x, err := s.xdgOutputs.GetXdgOutput(o.proxy)
16	if err != nil {
17		s.log.Warn().Err(err).Msg("xdg-output request failed")
18		return
19	}
20	x.OnLogicalSize(func(w, h int32) {
21		if w >= 0 && h >= 0 && w <= ports.MaxDimension && h <= ports.MaxDimension {
22			o.lw, o.lh = w, h
23		}
24	})
25	o.xdg = x
26}
27
28// releaseXdg destroys the zxdg_output_v1 of an output that went away.
29func (s *Source) releaseXdg(o *output) {
30	if x := o.xdg; x != nil {
31		o.xdg = nil
32		_ = x.Destroy()
33	}
34}