1/*
2 * Copyright (C) 2018 Metrological Group B.V.
3 * Copyright (C) 2018 Igalia S.L.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following
13 * disclaimer in the documentation and/or other materials provided
14 * with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#pragma once
30
31#include <cstdint>
32#include <wtf/HashSet.h>
33#include <wtf/Lock.h>
34#include <wtf/RefPtr.h>
35#include <wtf/ThreadSafeRefCounted.h>
36
37namespace Nicosia {
38
39class CompositionLayer;
40
41class Scene : public ThreadSafeRefCounted<Scene> {
42public:
43 static Ref<Scene> create()
44 {
45 return adoptRef(*new Scene);
46 }
47 ~Scene();
48
49 struct State {
50 State();
51 ~State();
52
53 uint32_t id { 0 };
54 // FIXME: This is needed for a ThreadedCompositor oddity that might not even be
55 // necessary anymore. It that has to be checked and ideally removed.
56 // https://bugs.webkit.org/show_bug.cgi?id=188839
57 bool platformLayerUpdated { false };
58 HashSet<RefPtr<Nicosia::CompositionLayer>> layers;
59 RefPtr<Nicosia::CompositionLayer> rootLayer;
60 };
61
62 template<typename F>
63 void accessState(const F& functor)
64 {
65 LockHolder locker(m_scene.lock);
66 functor(m_scene.state);
67 }
68
69private:
70 Scene();
71
72 struct {
73 Lock lock;
74 State state;
75 } m_scene;
76};
77
78} // namespace Nicosia
79