1 /*
2 * Copyright (C) 2019 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 #include "InputTarget.h"
18
19 #include <android-base/stringprintf.h>
20 #include <inttypes.h>
21 #include <string>
22
23 using android::base::StringPrintf;
24
25 namespace android::inputdispatcher {
26
addPointers(std::bitset<MAX_POINTER_ID+1> newPointerIds,const ui::Transform & transform)27 void InputTarget::addPointers(std::bitset<MAX_POINTER_ID + 1> newPointerIds,
28 const ui::Transform& transform) {
29 // The pointerIds can be empty, but still a valid InputTarget. This can happen when there is no
30 // valid pointer property from the input event.
31 if (newPointerIds.none()) {
32 setDefaultPointerTransform(transform);
33 return;
34 }
35
36 // Ensure that the new set of pointers doesn't overlap with the current set of pointers.
37 LOG_ALWAYS_FATAL_IF((pointerIds & newPointerIds).any());
38
39 pointerIds |= newPointerIds;
40 for (size_t i = 0; i < newPointerIds.size(); i++) {
41 if (!newPointerIds.test(i)) {
42 continue;
43 }
44 pointerTransforms[i] = transform;
45 }
46 }
47
setDefaultPointerTransform(const ui::Transform & transform)48 void InputTarget::setDefaultPointerTransform(const ui::Transform& transform) {
49 pointerIds.reset();
50 pointerTransforms[0] = transform;
51 }
52
useDefaultPointerTransform() const53 bool InputTarget::useDefaultPointerTransform() const {
54 return pointerIds.none();
55 }
56
getDefaultPointerTransform() const57 const ui::Transform& InputTarget::getDefaultPointerTransform() const {
58 return pointerTransforms[0];
59 }
60
getPointerInfoString() const61 std::string InputTarget::getPointerInfoString() const {
62 std::string out = "\n";
63 if (useDefaultPointerTransform()) {
64 const ui::Transform& transform = getDefaultPointerTransform();
65 transform.dump(out, "default", " ");
66 return out;
67 }
68
69 for (uint32_t i = 0; i < pointerIds.size(); i++) {
70 if (!pointerIds.test(i)) {
71 continue;
72 }
73
74 const std::string name = "pointerId " + std::to_string(i) + ":";
75 pointerTransforms[i].dump(out, name.c_str(), " ");
76 }
77 return out;
78 }
79 } // namespace android::inputdispatcher
80