1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "InputListener"
18
19 #define ATRACE_TAG ATRACE_TAG_INPUT
20
21 //#define LOG_NDEBUG 0
22
23 #include "InputListener.h"
24
25 #include <android-base/stringprintf.h>
26 #include <android/log.h>
27 #include <utils/Trace.h>
28
29 using android::base::StringPrintf;
30
31 namespace android {
32
operator +=(std::list<NotifyArgs> & keep,std::list<NotifyArgs> && consume)33 std::list<NotifyArgs>& operator+=(std::list<NotifyArgs>& keep, std::list<NotifyArgs>&& consume) {
34 keep.splice(keep.end(), consume);
35 return keep;
36 }
37
38 // --- InputListenerInterface ---
39
40 // Helper to std::visit with lambdas.
41 template <typename... V>
42 struct Visitor : V... {};
43 // explicit deduction guide (not needed as of C++20)
44 template <typename... V>
45 Visitor(V...) -> Visitor<V...>;
46
notify(const NotifyArgs & generalArgs)47 void InputListenerInterface::notify(const NotifyArgs& generalArgs) {
48 Visitor v{
49 [&](const NotifyInputDevicesChangedArgs& args) { notifyInputDevicesChanged(args); },
50 [&](const NotifyConfigurationChangedArgs& args) { notifyConfigurationChanged(args); },
51 [&](const NotifyKeyArgs& args) { notifyKey(args); },
52 [&](const NotifyMotionArgs& args) { notifyMotion(args); },
53 [&](const NotifySwitchArgs& args) { notifySwitch(args); },
54 [&](const NotifySensorArgs& args) { notifySensor(args); },
55 [&](const NotifyVibratorStateArgs& args) { notifyVibratorState(args); },
56 [&](const NotifyDeviceResetArgs& args) { notifyDeviceReset(args); },
57 [&](const NotifyPointerCaptureChangedArgs& args) { notifyPointerCaptureChanged(args); },
58 };
59 std::visit(v, generalArgs);
60 }
61
62 // --- QueuedInputListener ---
63
traceEvent(const char * functionName,int32_t id)64 static inline void traceEvent(const char* functionName, int32_t id) {
65 if (ATRACE_ENABLED()) {
66 std::string message = StringPrintf("%s(id=0x%" PRIx32 ")", functionName, id);
67 ATRACE_NAME(message.c_str());
68 }
69 }
70
QueuedInputListener(InputListenerInterface & innerListener)71 QueuedInputListener::QueuedInputListener(InputListenerInterface& innerListener)
72 : mInnerListener(innerListener) {}
73
notifyInputDevicesChanged(const NotifyInputDevicesChangedArgs & args)74 void QueuedInputListener::notifyInputDevicesChanged(const NotifyInputDevicesChangedArgs& args) {
75 traceEvent(__func__, args.id);
76 mArgsQueue.emplace_back(args);
77 }
78
notifyConfigurationChanged(const NotifyConfigurationChangedArgs & args)79 void QueuedInputListener::notifyConfigurationChanged(const NotifyConfigurationChangedArgs& args) {
80 traceEvent(__func__, args.id);
81 mArgsQueue.emplace_back(args);
82 }
83
notifyKey(const NotifyKeyArgs & args)84 void QueuedInputListener::notifyKey(const NotifyKeyArgs& args) {
85 traceEvent(__func__, args.id);
86 mArgsQueue.emplace_back(args);
87 }
88
notifyMotion(const NotifyMotionArgs & args)89 void QueuedInputListener::notifyMotion(const NotifyMotionArgs& args) {
90 traceEvent(__func__, args.id);
91 mArgsQueue.emplace_back(args);
92 }
93
notifySwitch(const NotifySwitchArgs & args)94 void QueuedInputListener::notifySwitch(const NotifySwitchArgs& args) {
95 traceEvent(__func__, args.id);
96 mArgsQueue.emplace_back(args);
97 }
98
notifySensor(const NotifySensorArgs & args)99 void QueuedInputListener::notifySensor(const NotifySensorArgs& args) {
100 traceEvent(__func__, args.id);
101 mArgsQueue.emplace_back(args);
102 }
103
notifyVibratorState(const NotifyVibratorStateArgs & args)104 void QueuedInputListener::notifyVibratorState(const NotifyVibratorStateArgs& args) {
105 traceEvent(__func__, args.id);
106 mArgsQueue.emplace_back(args);
107 }
108
notifyDeviceReset(const NotifyDeviceResetArgs & args)109 void QueuedInputListener::notifyDeviceReset(const NotifyDeviceResetArgs& args) {
110 traceEvent(__func__, args.id);
111 mArgsQueue.emplace_back(args);
112 }
113
notifyPointerCaptureChanged(const NotifyPointerCaptureChangedArgs & args)114 void QueuedInputListener::notifyPointerCaptureChanged(const NotifyPointerCaptureChangedArgs& args) {
115 traceEvent(__func__, args.id);
116 mArgsQueue.emplace_back(args);
117 }
118
flush()119 void QueuedInputListener::flush() {
120 for (const NotifyArgs& args : mArgsQueue) {
121 mInnerListener.notify(args);
122 }
123 mArgsQueue.clear();
124 }
125
126 } // namespace android
127