| #pragma once |
| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "common/vsoc/lib/typed_region_view.h" |
| #include "common/vsoc/shm/input_events_layout.h" |
| #include "uapi/vsoc_shm.h" |
| |
| namespace vsoc { |
| namespace input_events { |
| |
| struct InputEvent { |
| uint16_t type; |
| uint16_t code; |
| uint32_t value; |
| }; |
| |
| class InputEventsRegionView |
| : public vsoc::TypedRegionView< |
| vsoc::layout::input_events::InputEventsLayout> { |
| public: |
| static const int kMaxEventsPerPacket; |
| // Generates a touch event, may returns true if successful, false if there was |
| // an error, most likely that the queue is full. |
| bool HandleSingleTouchEvent(bool down, int x, int y); |
| bool HandlePowerButtonEvent(bool down); |
| bool HandleKeyboardEvent(bool down, uint16_t key_code); |
| |
| // TODO(jemoreira): HandleMultiTouchEvent()... |
| |
| // Read input events from the queue, waits if there are none available. |
| // Returns the number of events read or a negative value in case of an error |
| // (most likely the next packet in the queue is larger than the buffer |
| // provided). |
| intptr_t GetScreenEventsOrWait(InputEvent* buffer, int max_event_count); |
| intptr_t GetKeyboardEventsOrWait(InputEvent* buffer, int max_event_count); |
| intptr_t GetPowerButtonEventsOrWait(InputEvent* buffer, int max_event_count); |
| }; |
| |
| } // namespace input_events |
| } // namespace vsoc |