1 /*
2 * Copyright (C) 2018 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 "InputReaderBase"
18
19 //#define LOG_NDEBUG 0
20
21 #include "InputReaderBase.h"
22 #include "input/DisplayViewport.h"
23 #include "input/Input.h"
24 #include "input/NamedEnum.h"
25
26 #include <android/log.h>
27 #include <android-base/stringprintf.h>
28
29 #define INDENT " "
30 #define INDENT2 " "
31 #define INDENT3 " "
32 #define INDENT4 " "
33 #define INDENT5 " "
34
35 using android::base::StringPrintf;
36
37 namespace android {
38
39 // --- InputReaderConfiguration ---
40
changesToString(uint32_t changes)41 std::string InputReaderConfiguration::changesToString(uint32_t changes) {
42 if (changes == 0) {
43 return "<none>";
44 }
45 std::string result;
46 if (changes & CHANGE_POINTER_SPEED) {
47 result += "POINTER_SPEED | ";
48 }
49 if (changes & CHANGE_POINTER_GESTURE_ENABLEMENT) {
50 result += "POINTER_GESTURE_ENABLEMENT | ";
51 }
52 if (changes & CHANGE_DISPLAY_INFO) {
53 result += "DISPLAY_INFO | ";
54 }
55 if (changes & CHANGE_SHOW_TOUCHES) {
56 result += "SHOW_TOUCHES | ";
57 }
58 if (changes & CHANGE_KEYBOARD_LAYOUTS) {
59 result += "KEYBOARD_LAYOUTS | ";
60 }
61 if (changes & CHANGE_DEVICE_ALIAS) {
62 result += "DEVICE_ALIAS | ";
63 }
64 if (changes & CHANGE_TOUCH_AFFINE_TRANSFORMATION) {
65 result += "TOUCH_AFFINE_TRANSFORMATION | ";
66 }
67 if (changes & CHANGE_EXTERNAL_STYLUS_PRESENCE) {
68 result += "EXTERNAL_STYLUS_PRESENCE | ";
69 }
70 if (changes & CHANGE_ENABLED_STATE) {
71 result += "ENABLED_STATE | ";
72 }
73 if (changes & CHANGE_MUST_REOPEN) {
74 result += "MUST_REOPEN | ";
75 }
76 return result;
77 }
78
getDisplayViewportByUniqueId(const std::string & uniqueDisplayId) const79 std::optional<DisplayViewport> InputReaderConfiguration::getDisplayViewportByUniqueId(
80 const std::string& uniqueDisplayId) const {
81 if (uniqueDisplayId.empty()) {
82 ALOGE("Empty string provided to %s", __func__);
83 return std::nullopt;
84 }
85 size_t count = 0;
86 std::optional<DisplayViewport> result = std::nullopt;
87 for (const DisplayViewport& currentViewport : mDisplays) {
88 if (uniqueDisplayId == currentViewport.uniqueId) {
89 result = std::make_optional(currentViewport);
90 count++;
91 }
92 }
93 if (count > 1) {
94 ALOGE("Found %zu viewports with uniqueId %s, but expected 1 at most",
95 count, uniqueDisplayId.c_str());
96 }
97 return result;
98 }
99
getDisplayViewportByType(ViewportType type) const100 std::optional<DisplayViewport> InputReaderConfiguration::getDisplayViewportByType(ViewportType type)
101 const {
102 size_t count = 0;
103 std::optional<DisplayViewport> result = std::nullopt;
104 for (const DisplayViewport& currentViewport : mDisplays) {
105 // Return the first match, or the default display if we're looking for the internal viewport
106 if (currentViewport.type == type) {
107 if (!result ||
108 (type == ViewportType::INTERNAL &&
109 currentViewport.displayId == ADISPLAY_ID_DEFAULT)) {
110 result = std::make_optional(currentViewport);
111 }
112 count++;
113 }
114 }
115 if (count > 1) {
116 ALOGW("Found %zu viewports with type %s, but expected 1 at most", count,
117 NamedEnum::string(type).c_str());
118 }
119 return result;
120 }
121
getDisplayViewportByPort(uint8_t displayPort) const122 std::optional<DisplayViewport> InputReaderConfiguration::getDisplayViewportByPort(
123 uint8_t displayPort) const {
124 for (const DisplayViewport& currentViewport : mDisplays) {
125 const std::optional<uint8_t>& physicalPort = currentViewport.physicalPort;
126 if (physicalPort && (*physicalPort == displayPort)) {
127 return std::make_optional(currentViewport);
128 }
129 }
130 return std::nullopt;
131 }
132
getDisplayViewportById(int32_t displayId) const133 std::optional<DisplayViewport> InputReaderConfiguration::getDisplayViewportById(
134 int32_t displayId) const {
135 for (const DisplayViewport& currentViewport : mDisplays) {
136 if (currentViewport.displayId == displayId) {
137 return std::make_optional(currentViewport);
138 }
139 }
140 return std::nullopt;
141 }
142
setDisplayViewports(const std::vector<DisplayViewport> & viewports)143 void InputReaderConfiguration::setDisplayViewports(const std::vector<DisplayViewport>& viewports) {
144 mDisplays = viewports;
145 }
146
dump(std::string & dump) const147 void InputReaderConfiguration::dump(std::string& dump) const {
148 for (const DisplayViewport& viewport : mDisplays) {
149 dumpViewport(dump, viewport);
150 }
151 }
152
dumpViewport(std::string & dump,const DisplayViewport & viewport) const153 void InputReaderConfiguration::dumpViewport(std::string& dump, const DisplayViewport& viewport)
154 const {
155 dump += StringPrintf(INDENT4 "%s\n", viewport.toString().c_str());
156 }
157
158
159 // -- TouchAffineTransformation --
applyTo(float & x,float & y) const160 void TouchAffineTransformation::applyTo(float& x, float& y) const {
161 float newX, newY;
162 newX = x * x_scale + y * x_ymix + x_offset;
163 newY = x * y_xmix + y * y_scale + y_offset;
164
165 x = newX;
166 y = newY;
167 }
168
169 } // namespace android
170