File: wayland_display_output.h

package info (click to toggle)
chromium 120.0.6099.224-1~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 6,112,112 kB
  • sloc: cpp: 32,907,025; ansic: 8,148,123; javascript: 3,679,536; python: 2,031,248; asm: 959,718; java: 804,675; xml: 617,256; sh: 111,417; objc: 100,835; perl: 88,443; cs: 53,032; makefile: 29,579; fortran: 24,137; php: 21,162; tcl: 21,147; sql: 20,809; ruby: 17,735; pascal: 12,864; yacc: 8,045; lisp: 3,388; lex: 1,323; ada: 727; awk: 329; jsp: 267; csh: 117; exp: 43; sed: 37
file content (69 lines) | stat: -rw-r--r-- 2,288 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_EXO_WAYLAND_WAYLAND_DISPLAY_OUTPUT_H_
#define COMPONENTS_EXO_WAYLAND_WAYLAND_DISPLAY_OUTPUT_H_

#include <cstdint>

#include "base/containers/flat_map.h"
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"

struct wl_client;
struct wl_global;
struct wl_resource;

namespace exo {
namespace wayland {

// Class that represents a wayland output. Tied to a specific display ID and
// associated with a global, and wl_outputs created by clients.  This object
// will self destruct upon the display removal after delays up to 12 seconds
// (3 seconds x (1 initial delay + 3 retries)) to give time for clients to
// release the output they created, except for the shutdown scenario where
// they're removed immediately.
class WaylandDisplayOutput {
 public:
  explicit WaylandDisplayOutput(int64_t display_id);

  WaylandDisplayOutput(const WaylandDisplayOutput&) = delete;
  WaylandDisplayOutput& operator=(const WaylandDisplayOutput&) = delete;

  ~WaylandDisplayOutput();

  // Delay interval between delete attempts.
  static constexpr base::TimeDelta kDeleteTaskDelay = base::Seconds(3);
  // Number of times to retry deletion.
  static constexpr int kDeleteRetries = 3;

  int64_t id() const;
  void set_global(wl_global* global);

  // Register/Unregister output resources, which will be used to
  // notify surface when enter/leave the output.
  void UnregisterOutput(wl_resource* output_resource);
  void RegisterOutput(wl_resource* output_resource);

  wl_resource* GetOutputResourceForClient(wl_client* client);

  // Self destruct in 5 seconeds.
  // Caller must not access this object after calling this.
  void OnDisplayRemoved();

  int output_counts() const { return output_ids_.size(); }
  bool had_registered_output() const { return had_registered_output_; }

 private:
  const int64_t id_;
  raw_ptr<wl_global, DanglingUntriaged | ExperimentalAsh> global_ = nullptr;
  base::flat_map<wl_client*, wl_resource*> output_ids_;
  bool had_registered_output_ = false;
  bool is_destructing_ = false;
};

}  // namespace wayland
}  // namespace exo

#endif  // COMPONENTS_EXO_WAYLAND_WAYLAND_DISPLAY_OUTPUT_H_