cd9e8b61

Add ScaleTracker.enteredCount

a73x 2026-04-16 10:41

Commit message

Add ScaleTracker.enteredCount

Exposes the size of the entered-output set so higher layers can gate
rendering on surface visibility.

src/scale_tracker.zig

Old		New
@@ -52,6 +52,10 @@ pub const ScaleTracker = struct {
52	}	52	}
53	return max_scale;	53	return max_scale;
54	}	54	}
		55
		56	pub fn enteredCount(self: *const ScaleTracker) usize {
		57	return self.entered.count();
		58	}
55	};	59	};
56		60
57	test "new tracker reports default scale of 1" {	61	test "new tracker reports default scale of 1" {
@@ -135,3 +139,26 @@ test "setOutputScale on unknown id is a no-op" {
135	t.setOutputScale(999, 5);	139	t.setOutputScale(999, 5);
136	try std.testing.expectEqual(@as(i32, 1), t.bufferScale());	140	try std.testing.expectEqual(@as(i32, 1), t.bufferScale());
137	}	141	}
		142
		143	test "enteredCount reflects the entered-output set" {
		144	var t = ScaleTracker.init(std.testing.allocator);
		145	defer t.deinit();
		146
		147	try std.testing.expectEqual(@as(usize, 0), t.enteredCount());
		148
		149	try t.addOutput(1);
		150	try t.addOutput(2);
		151	try std.testing.expectEqual(@as(usize, 0), t.enteredCount());
		152
		153	try t.enterOutput(1);
		154	try std.testing.expectEqual(@as(usize, 1), t.enteredCount());
		155
		156	try t.enterOutput(2);
		157	try std.testing.expectEqual(@as(usize, 2), t.enteredCount());
		158
		159	t.leaveOutput(1);
		160	try std.testing.expectEqual(@as(usize, 1), t.enteredCount());
		161
		162	t.removeOutput(2);
		163	try std.testing.expectEqual(@as(usize, 0), t.enteredCount());
		164	}