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 #ifndef _UI_INPUTREADER_TOUCH_CURSOR_INPUT_MAPPER_COMMON_H
18 #define _UI_INPUTREADER_TOUCH_CURSOR_INPUT_MAPPER_COMMON_H
19
20 #include <input/DisplayViewport.h>
21 #include <stdint.h>
22
23 #include "EventHub.h"
24 #include "InputListener.h"
25 #include "InputReaderContext.h"
26
27 namespace android {
28
29 // --- Static Definitions ---
30
getInverseRotation(int32_t orientation)31 static int32_t getInverseRotation(int32_t orientation) {
32 switch (orientation) {
33 case DISPLAY_ORIENTATION_90:
34 return DISPLAY_ORIENTATION_270;
35 case DISPLAY_ORIENTATION_270:
36 return DISPLAY_ORIENTATION_90;
37 default:
38 return orientation;
39 }
40 }
41
rotateDelta(int32_t orientation,float * deltaX,float * deltaY)42 static void rotateDelta(int32_t orientation, float* deltaX, float* deltaY) {
43 float temp;
44 switch (orientation) {
45 case DISPLAY_ORIENTATION_90:
46 temp = *deltaX;
47 *deltaX = *deltaY;
48 *deltaY = -temp;
49 break;
50
51 case DISPLAY_ORIENTATION_180:
52 *deltaX = -*deltaX;
53 *deltaY = -*deltaY;
54 break;
55
56 case DISPLAY_ORIENTATION_270:
57 temp = *deltaX;
58 *deltaX = -*deltaY;
59 *deltaY = temp;
60 break;
61
62 default:
63 break;
64 }
65 }
66
67 // Returns true if the pointer should be reported as being down given the specified
68 // button states. This determines whether the event is reported as a touch event.
isPointerDown(int32_t buttonState)69 static bool isPointerDown(int32_t buttonState) {
70 return buttonState &
71 (AMOTION_EVENT_BUTTON_PRIMARY | AMOTION_EVENT_BUTTON_SECONDARY |
72 AMOTION_EVENT_BUTTON_TERTIARY);
73 }
74
synthesizeButtonKey(InputReaderContext * context,int32_t action,nsecs_t when,nsecs_t readTime,int32_t deviceId,uint32_t source,int32_t displayId,uint32_t policyFlags,int32_t lastButtonState,int32_t currentButtonState,int32_t buttonState,int32_t keyCode)75 static void synthesizeButtonKey(InputReaderContext* context, int32_t action, nsecs_t when,
76 nsecs_t readTime, int32_t deviceId, uint32_t source,
77 int32_t displayId, uint32_t policyFlags, int32_t lastButtonState,
78 int32_t currentButtonState, int32_t buttonState, int32_t keyCode) {
79 if ((action == AKEY_EVENT_ACTION_DOWN && !(lastButtonState & buttonState) &&
80 (currentButtonState & buttonState)) ||
81 (action == AKEY_EVENT_ACTION_UP && (lastButtonState & buttonState) &&
82 !(currentButtonState & buttonState))) {
83 NotifyKeyArgs args(context->getNextId(), when, readTime, deviceId, source, displayId,
84 policyFlags, action, 0, keyCode, 0, context->getGlobalMetaState(), when);
85 context->getListener().notifyKey(&args);
86 }
87 }
88
synthesizeButtonKeys(InputReaderContext * context,int32_t action,nsecs_t when,nsecs_t readTime,int32_t deviceId,uint32_t source,int32_t displayId,uint32_t policyFlags,int32_t lastButtonState,int32_t currentButtonState)89 static void synthesizeButtonKeys(InputReaderContext* context, int32_t action, nsecs_t when,
90 nsecs_t readTime, int32_t deviceId, uint32_t source,
91 int32_t displayId, uint32_t policyFlags, int32_t lastButtonState,
92 int32_t currentButtonState) {
93 synthesizeButtonKey(context, action, when, readTime, deviceId, source, displayId, policyFlags,
94 lastButtonState, currentButtonState, AMOTION_EVENT_BUTTON_BACK,
95 AKEYCODE_BACK);
96 synthesizeButtonKey(context, action, when, readTime, deviceId, source, displayId, policyFlags,
97 lastButtonState, currentButtonState, AMOTION_EVENT_BUTTON_FORWARD,
98 AKEYCODE_FORWARD);
99 }
100
101 } // namespace android
102
103 #endif // _UI_INPUTREADER_TOUCH_CURSOR_INPUT_MAPPER_COMMON_H
104