feat(ports): add data drag and drop messages

commit: c2603da68e005266c0838fcbfdd3f8cbf87fedcf
author: brice · 5d ago · 2026-10-17 14:10 UTC
parent: 458251f
signature: GPG VerifiedCD88F9E564E0102646FB6077A1A07C7C7C3E349D · arch-gpg Verified for the committer email

1 file · +67 -0

A internal/ports/dnd.go +67 -0

@@ -0,0 +1,67 @@
	1	+	package ports
	2	+
	3	+	import "time"
	4	+
	5	+	// Data drag and drop (wl_data_device.start_drag). Wayland validates the
	6	+	// client's request and tells core; core owns the pointer during the drag:
	7	+	// it hit-tests, routes the drag to the surface under the pointer, drops on
	8	+	// the release and cancels on Escape. Wayland speaks the protocol to the
	9	+	// source and the targets. The icon is a client surface core draws over
	10	+	// everything at the cursor.
	11	+
	12	+	// DataDragStarted carries wayland → core a client drag answering the
	13	+	// client's current press. Icon is the drag icon's ID (0: none); core
	14	+	// answers with DataDragCancel when it refuses the drag.
	15	+	type DataDragStarted struct {
	16	+	Icon WindowID
	17	+	}
	18	+
	19	+	func (DataDragStarted) clientEvent() {}
	20	+
	21	+	// DataDragIcon carries wayland → core the drag icon's geometry after a
	22	+	// commit: its top left corner relative to the cursor hotspot, and its
	23	+	// size, in logical pixels. W or H 0 hides it.
	24	+	type DataDragIcon struct {
	25	+	ID WindowID
	26	+	X, Y, W, H int
	27	+	}
	28	+
	29	+	func (DataDragIcon) clientEvent() {}
	30	+
	31	+	// DataDragEnded carries wayland → core the end of a drag core did not
	32	+	// end itself: the source died or the drag was cancelled.
	33	+	type DataDragEnded struct{}
	34	+
	35	+	func (DataDragEnded) clientEvent() {}
	36	+
	37	+	// DataDragFocus carries core → wayland the surface under the pointer
	38	+	// during a drag (0: none), at surface-local X, Y: the old target gets
	39	+	// leave, the new one enter with an offer.
	40	+	type DataDragFocus struct {
	41	+	ID WindowID
	42	+	X, Y float64
	43	+	Time time.Duration
	44	+	}
	45	+
	46	+	func (DataDragFocus) clientCommand() {}
	47	+
	48	+	// DataDragMotion carries core → wayland the pointer over the drag target,
	49	+	// in its surface coordinates.
	50	+	type DataDragMotion struct {
	51	+	ID WindowID
	52	+	X, Y float64
	53	+	Time time.Duration
	54	+	}
	55	+
	56	+	func (DataDragMotion) clientCommand() {}
	57	+
	58	+	// DataDragDrop carries core → wayland the release of the drag button: the
	59	+	// target gets drop when it accepted the offer, else the drag is cancelled.
	60	+	type DataDragDrop struct{}
	61	+
	62	+	func (DataDragDrop) clientCommand() {}
	63	+
	64	+	// DataDragCancel carries core → wayland a cancelled or refused drag.
	65	+	type DataDragCancel struct{}
	66	+
	67	+	func (DataDragCancel) clientCommand() {}

@@ -0,0 +1,67 @@
	1	+	package ports
	2	+
	3	+	import "time"
	4	+
	5	+	// Data drag and drop (wl_data_device.start_drag). Wayland validates the
	6	+	// client's request and tells core; core owns the pointer during the drag:
	7	+	// it hit-tests, routes the drag to the surface under the pointer, drops on
	8	+	// the release and cancels on Escape. Wayland speaks the protocol to the
	9	+	// source and the targets. The icon is a client surface core draws over
	10	+	// everything at the cursor.
	11	+
	12	+	// DataDragStarted carries wayland → core a client drag answering the
	13	+	// client's current press. Icon is the drag icon's ID (0: none); core
	14	+	// answers with DataDragCancel when it refuses the drag.
	15	+	type DataDragStarted struct {
	16	+	Icon WindowID
	17	+	}
	18	+
	19	+	func (DataDragStarted) clientEvent() {}
	20	+
	21	+	// DataDragIcon carries wayland → core the drag icon's geometry after a
	22	+	// commit: its top left corner relative to the cursor hotspot, and its
	23	+	// size, in logical pixels. W or H 0 hides it.
	24	+	type DataDragIcon struct {
	25	+	ID WindowID
	26	+	X, Y, W, H int
	27	+	}
	28	+
	29	+	func (DataDragIcon) clientEvent() {}
	30	+
	31	+	// DataDragEnded carries wayland → core the end of a drag core did not
	32	+	// end itself: the source died or the drag was cancelled.
	33	+	type DataDragEnded struct{}
	34	+
	35	+	func (DataDragEnded) clientEvent() {}
	36	+
	37	+	// DataDragFocus carries core → wayland the surface under the pointer
	38	+	// during a drag (0: none), at surface-local X, Y: the old target gets
	39	+	// leave, the new one enter with an offer.
	40	+	type DataDragFocus struct {
	41	+	ID WindowID
	42	+	X, Y float64
	43	+	Time time.Duration
	44	+	}
	45	+
	46	+	func (DataDragFocus) clientCommand() {}
	47	+
	48	+	// DataDragMotion carries core → wayland the pointer over the drag target,
	49	+	// in its surface coordinates.
	50	+	type DataDragMotion struct {
	51	+	ID WindowID
	52	+	X, Y float64
	53	+	Time time.Duration
	54	+	}
	55	+
	56	+	func (DataDragMotion) clientCommand() {}
	57	+
	58	+	// DataDragDrop carries core → wayland the release of the drag button: the
	59	+	// target gets drop when it accepted the offer, else the drag is cancelled.
	60	+	type DataDragDrop struct{}
	61	+
	62	+	func (DataDragDrop) clientCommand() {}
	63	+
	64	+	// DataDragCancel carries core → wayland a cancelled or refused drag.
	65	+	type DataDragCancel struct{}
	66	+
	67	+	func (DataDragCancel) clientCommand() {}