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