sdk/fidl/fuchsia.ui.policy/presentation.fidl

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library fuchsia.ui.policy;

using fuchsia.ui.input;

/// `Presentation.CapturePointerEvent` will consume this listener interface and
/// call `OnEvent` when a pointer event occurs.
protocol PointerCaptureListenerHACK {
    OnPointerEvent(struct {
        event fuchsia.ui.input.PointerEvent;
    });
};

/// Allows clients of Presenter.Present() to control a presentation.
/// Experimental.
@discoverable
protocol Presentation {
    /// This call exists so that base shell can capture pointer events.
    // TODO: Figure out the feasibility of this feature and the best place to put
    // it. This call will be replaced by gesture disambiguation system in future.
    CapturePointerEventsHACK(resource struct {
        listener client_end:PointerCaptureListenerHACK;
    });
};