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io/input,io/pointer: [API] make pointer grab a command

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Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2023-10-19 17:32:55 -05:00
parent 676b670119
commit 1bcbaa8137
6 changed files with 50 additions and 53 deletions
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io/pointer/pointer.go
+13 -11
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@@ -60,9 +60,6 @@ type PassStack struct {
// events.
type InputOp struct {
Tag event.Tag
// Grab, if set, request that the handler get
// Grabbed priority.
Grab bool
// Kinds is a bitwise-or of event types to receive.
Kinds Kind
// ScrollBounds describe the maximum scrollable distances in both
@@ -73,6 +70,12 @@ type InputOp struct {
ScrollBounds image.Rectangle
}
// GrabCmd requests a pointer grab on the pointer identified by ID.
type GrabCmd struct {
Tag event.Tag
ID ID
}
type ID uint16
// Kind of an Event.
@@ -250,15 +253,12 @@ func (op InputOp) Add(o *op.Ops) {
}
data := ops.Write1(&o.Internal, ops.TypePointerInputLen, op.Tag)
data[0] = byte(ops.TypePointerInput)
if op.Grab {
data[1] = 1
}
bo := binary.LittleEndian
bo.PutUint16(data[2:], uint16(op.Kinds))
bo.PutUint32(data[4:], uint32(op.ScrollBounds.Min.X))
bo.PutUint32(data[8:], uint32(op.ScrollBounds.Min.Y))
bo.PutUint32(data[12:], uint32(op.ScrollBounds.Max.X))
bo.PutUint32(data[16:], uint32(op.ScrollBounds.Max.Y))
bo.PutUint16(data[1:], uint16(op.Kinds))
bo.PutUint32(data[3:], uint32(op.ScrollBounds.Min.X))
bo.PutUint32(data[7:], uint32(op.ScrollBounds.Min.Y))
bo.PutUint32(data[11:], uint32(op.ScrollBounds.Max.X))
bo.PutUint32(data[15:], uint32(op.ScrollBounds.Max.Y))
}
func (t Kind) String() string {
@@ -404,3 +404,5 @@ func (c Cursor) String() string {
}
func (Event) ImplementsEvent() {}
func (GrabCmd) ImplementsCommand() {}