forked from joejulian/gio
Elias Naur
75314fcee2
With the introduction of filters, it is now possible to have one tag per widget by convention. Note that gestures still have their own tags, for disambiguation. Signed-off-by: Elias Naur <mail@eliasnaur.com>
95 lines
2.0 KiB
Go
95 lines
2.0 KiB
Go
package widget
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import (
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"image"
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"testing"
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"gioui.org/f32"
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"gioui.org/io/event"
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"gioui.org/io/input"
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"gioui.org/io/pointer"
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"gioui.org/io/transfer"
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"gioui.org/layout"
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"gioui.org/op"
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"gioui.org/op/clip"
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)
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func TestDraggable(t *testing.T) {
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var r input.Router
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gtx := layout.Context{
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Constraints: layout.Exact(image.Pt(100, 100)),
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Source: r.Source(),
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Ops: new(op.Ops),
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}
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drag := &Draggable{
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Type: "file",
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}
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tgt := new(int)
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defer pointer.PassOp{}.Push(gtx.Ops).Pop()
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dims := drag.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
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return layout.Dimensions{Size: gtx.Constraints.Min}
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}, nil)
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stack := clip.Rect{Max: dims.Size}.Push(gtx.Ops)
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event.InputOp(gtx.Ops, tgt)
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stack.Pop()
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drag.Update(gtx)
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r.Event(tgt, transfer.TargetFilter{Type: drag.Type})
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r.Frame(gtx.Ops)
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r.Queue(
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pointer.Event{
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Position: f32.Pt(10, 10),
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Kind: pointer.Press,
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},
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pointer.Event{
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Position: f32.Pt(20, 10),
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Kind: pointer.Move,
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},
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pointer.Event{
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Position: f32.Pt(20, 10),
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Kind: pointer.Release,
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},
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)
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ofr := &offer{data: "hello"}
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drag.Update(gtx)
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r.Event(tgt, transfer.TargetFilter{Type: drag.Type})
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drag.Offer(gtx, "file", ofr)
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e, ok := r.Event(tgt, transfer.TargetFilter{Type: drag.Type})
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if !ok {
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t.Fatalf("expected event")
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}
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ev := e.(transfer.DataEvent)
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if got, want := ev.Type, "file"; got != want {
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t.Errorf("expected %v; got %v", got, want)
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}
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if ofr.closed {
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t.Error("offer closed prematurely")
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}
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e, ok = r.Event(tgt, transfer.TargetFilter{Type: drag.Type})
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if !ok {
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t.Fatalf("expected event")
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}
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if _, ok := e.(transfer.CancelEvent); !ok {
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t.Fatalf("expected transfer.CancelEvent event")
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}
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r.Frame(gtx.Ops)
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if !ofr.closed {
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t.Error("offer was not closed")
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}
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}
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// offer satisfies io.ReadCloser for use in data transfers.
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type offer struct {
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data string
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closed bool
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}
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func (*offer) Read([]byte) (int, error) { return 0, nil }
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func (o *offer) Close() error {
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o.closed = true
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return nil
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}
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