Cody Schuffelen | 134ff03 | 2019-11-22 00:25:32 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2017 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 | #include "common/vsoc/lib/input_events_region_view.h" |
| 17 | |
| 18 | #include <linux/input.h> |
| 19 | #include <linux/uinput.h> |
| 20 | |
| 21 | #include "common/vsoc/lib/circqueue_impl.h" |
| 22 | |
| 23 | using vsoc::layout::input_events::InputEventsLayout; |
| 24 | |
| 25 | namespace vsoc { |
| 26 | namespace input_events { |
| 27 | |
| 28 | namespace { |
| 29 | void InitInputEvent(InputEvent* evt, uint16_t type, uint16_t code, uint32_t value) { |
| 30 | evt->type = type; |
| 31 | evt->code = code; |
| 32 | evt->value = value; |
| 33 | } |
| 34 | } // namespace |
| 35 | |
| 36 | const int InputEventsRegionView::kMaxEventsPerPacket = 4; |
| 37 | |
| 38 | bool InputEventsRegionView::HandleSingleTouchEvent(bool down, int x, int y) { |
| 39 | // TODO(jemoreira): Use multitouch when available |
| 40 | InputEvent events[4]; |
| 41 | // Make sure to modify kMaxEventPerPacket if more events are sent. |
| 42 | InitInputEvent(&events[0], EV_ABS, ABS_X, x); |
| 43 | InitInputEvent(&events[1], EV_ABS, ABS_Y, y); |
| 44 | InitInputEvent(&events[2], EV_KEY, BTN_TOUCH, down); |
| 45 | InitInputEvent(&events[3], EV_SYN, 0, 0); |
| 46 | return 0 < |
| 47 | data()->touch_screen_queue.Write( |
| 48 | this, reinterpret_cast<char*>(&events[0]), sizeof(events), true); |
| 49 | } |
| 50 | |
| 51 | bool InputEventsRegionView::HandlePowerButtonEvent(bool down) { |
| 52 | InputEvent events[2]; |
| 53 | InitInputEvent(&events[0], EV_KEY, KEY_POWER, down); |
| 54 | InitInputEvent(&events[1], EV_SYN, 0, 0); |
| 55 | return 0 < data()->power_button_queue.Write( |
| 56 | this, reinterpret_cast<char*>(&events[0]), |
| 57 | sizeof(events), true); |
| 58 | } |
| 59 | |
| 60 | bool InputEventsRegionView::HandleKeyboardEvent(bool down, uint16_t key_code) { |
| 61 | InputEvent events[2]; |
| 62 | InitInputEvent(&events[0], EV_KEY, key_code, down); |
| 63 | InitInputEvent(&events[1], EV_SYN, 0, 0); |
| 64 | return 0 < |
| 65 | data()->keyboard_queue.Write(this, reinterpret_cast<char*>(&events[0]), |
| 66 | sizeof(events), true); |
| 67 | } |
| 68 | |
| 69 | intptr_t InputEventsRegionView::GetScreenEventsOrWait(InputEvent* evt, |
| 70 | int max_event_count) { |
| 71 | intptr_t ret = this->data()->touch_screen_queue.Read( |
| 72 | this, reinterpret_cast<char*>(evt), sizeof(InputEvent) * max_event_count); |
| 73 | if (ret < 0) { |
| 74 | return ret; |
| 75 | } |
| 76 | return ret / sizeof(InputEvent); |
| 77 | } |
| 78 | |
| 79 | intptr_t InputEventsRegionView::GetKeyboardEventsOrWait(InputEvent* evt, |
| 80 | int max_event_count) { |
| 81 | intptr_t ret = this->data()->keyboard_queue.Read( |
| 82 | this, reinterpret_cast<char*>(evt), sizeof(InputEvent) * max_event_count); |
| 83 | if (ret < 0) { |
| 84 | return ret; |
| 85 | } |
| 86 | return ret / sizeof(InputEvent); |
| 87 | } |
| 88 | |
| 89 | intptr_t InputEventsRegionView::GetPowerButtonEventsOrWait( |
| 90 | InputEvent* evt, int max_event_count) { |
| 91 | intptr_t ret = this->data()->power_button_queue.Read( |
| 92 | this, reinterpret_cast<char*>(evt), sizeof(InputEvent) * max_event_count); |
| 93 | if (ret < 0) { |
| 94 | return ret; |
| 95 | } |
| 96 | return ret / sizeof(InputEvent); |
| 97 | } |
| 98 | |
| 99 | } // namespace input_events |
| 100 | } // namespace vsoc |