Temporary redirect to patched xgbutil that will only work on my machine

backends/x/event.go

@@ -264,6 +264,7 @@ func (window *window) handleSelectionRequest (
 	connection *xgbutil.XUtil,
 	event xevent.SelectionRequestEvent,
 ) {
+	println("got sel req")
 	if window.selectionClaim == nil { return }
 	window.selectionClaim.handleSelectionRequest(connection, event)
 }

backends/x/selection.go

@@ -9,6 +9,8 @@ import "github.com/jezek/xgbutil/xprop"
 import "github.com/jezek/xgbutil/xevent"
 import "git.tebibyte.media/sashakoshka/tomo/data"
 
+const clipboardName = "CLIPBOARD"
+
 type selReqState int; const (
 	selReqStateClosed selReqState = iota
 	selReqStateAwaitTargets

backends/x/selectionclaim.go

@@ -17,7 +17,7 @@ type selectionClaim struct {
 func (window *window) claimSelection (name xproto.Atom, data data.Data) *selectionClaim {
 	// Follow:
 	// https://tronche.com/gui/x/icccm/sec-2.html#s-2.1
-
+	
 	// A client wishing to acquire ownership of a particular selection
 	// should call SetSelectionOwner. The client should set the specified
 	// selection to the atom that represents the selection, set the
@@ -35,6 +35,11 @@ func (window *window) claimSelection (name xproto.Atom, data data.Data) *selecti
 		window.xWindow.Id, name, 0).Check() // FIXME: should not be zero
 	if err != nil { return nil }
 
+	ownerReply, err := xproto.GetSelectionOwner (
+		window.backend.connection.Conn(), name).Reply()
+	if err != nil { return nil }
+	if ownerReply.Owner != window.xWindow.Id { return nil}
+
 	return &selectionClaim {
 		window: window,
 		data: data,
@@ -139,7 +144,7 @@ func (claim *selectionClaim) handleSelectionRequest (
 		for index, name := range targetNames {
 			atom, err := xprop.Atm(claim.window.backend.connection, name)
 			if err != nil { die(); return }
-			xgb.Put32(data[:index * 4], uint32(atom))
+			xgb.Put32(data[:(index + 1) * 4], uint32(atom))
 		}
 		claim.window.fulfillSelectionRequest(data, 8, event)
 

backends/x/window.go

@@ -290,8 +290,7 @@ func (window *window) Hide () {
 }
 
 func (window *window) Copy (data data.Data) {
-	selectionName := "CLIPBOARD"
-	selectionAtom, err := xprop.Atm(window.backend.connection, selectionName)
+	selectionAtom, err := xprop.Atm(window.backend.connection, clipboardName)
 	if err != nil { return }
 	window.selectionClaim = window.claimSelection(selectionAtom, data)
 }
@@ -307,9 +306,8 @@ func (window *window) Paste (callback func (data.Data, error), accept ...data.Mi
 		return
 	}
 
-	selectionName := "CLIPBOARD"
-	propertyName  := "TOMO_SELECTION"
-	selectionAtom, err := xprop.Atm(window.backend.connection, selectionName)
+	propertyName := "TOMO_SELECTION"
+	selectionAtom, err := xprop.Atm(window.backend.connection, clipboardName)
 	if err != nil { die(err); return }
 	propertyAtom, err := xprop.Atm(window.backend.connection, propertyName)
 	if err != nil { die(err); return }

go.mod

@@ -22,3 +22,5 @@ require (
 	github.com/BurntSushi/graphics-go v0.0.0-20160129215708-b43f31a4a966 // indirect
 	github.com/jezek/xgb v1.1.0
 )
+
+replace github.com/jezek/xgbutil => /home/sashakoshka/repos/xgbutil