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io/router: fix semantic area traversal

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This commit updates the logic behind SemanticAt to use the same hit area
traversal as normal event routing, which should result in more accurate
results for screen readers trying to resolve widgets that might be partially
obscured by non-semantic content.

While here, I realized that the iteration of hit areas needed to stop at
the first matching semantic area, and I added that capability and updated
the ActionAt logic to leverage it as well.

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
This commit is contained in:
Chris Waldon
2023-08-23 14:21:54 -04:00
parent cf5ae4aad9
commit f437aaf359
2 changed files with 32 additions and 15 deletions
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io/router/pointer_test.go
+13
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@@ -244,6 +244,19 @@ func TestPointerSystemAction(t *testing.T) {
r.Frame(&ops)
assertActionAt(t, r, f32.Pt(50, 50), system.ActionMove)
})
t.Run("uses topmost action op", func(t *testing.T) {
var ops op.Ops
r1 := clip.Rect(image.Rect(0, 0, 100, 100)).Push(&ops)
system.ActionInputOp(system.ActionMove).Add(&ops)
r2 := clip.Rect(image.Rect(0, 0, 100, 100)).Push(&ops)
system.ActionInputOp(system.ActionClose).Add(&ops)
r2.Pop()
r1.Pop()
var r Router
r.Frame(&ops)
assertActionAt(t, r, f32.Pt(50, 50), system.ActionClose)
})
}
func TestPointerPriority(t *testing.T) {