| 1 | /* |
| 2 | * Copyright (C) 2013 Canonical Ltd |
| 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 | * Authored by: Thomas Voss <thomas.voss@canonical.com> |
| 17 | */ |
| 18 | |
| 19 | #ifndef INPUT_STACK_COMPATIBILITY_LAYER_H_ |
| 20 | #define INPUT_STACK_COMPATIBILITY_LAYER_H_ |
| 21 | |
| 22 | #ifdef __cplusplus |
| 23 | extern "C" { |
| 24 | #endif |
| 25 | |
| 26 | #include <stdint.h> |
| 27 | #include <stdbool.h> |
| 28 | |
| 29 | #define MAX_POINTER_COUNT 16 |
| 30 | |
| 31 | typedef int64_t nsecs_t; |
| 32 | |
| 33 | typedef enum |
| 34 | { |
| 35 | KEY_EVENT_TYPE, |
| 36 | MOTION_EVENT_TYPE, |
| 37 | HW_SWITCH_EVENT_TYPE |
| 38 | } EventType; |
| 39 | |
| 40 | struct Event |
| 41 | { |
| 42 | // Generic event properties |
| 43 | EventType type; |
| 44 | int32_t device_id; |
| 45 | int32_t source_id; |
| 46 | int32_t action; |
| 47 | int32_t flags; |
| 48 | int32_t meta_state; |
| 49 | // Information specific to key/motion event types |
| 50 | union |
| 51 | { |
| 52 | struct HardwareSwitchEvent |
| 53 | { |
| 54 | nsecs_t event_time; |
| 55 | uint32_t policy_flags; |
| 56 | int32_t switch_values; |
| 57 | int32_t switch_mask; |
| 58 | } hw_switch; |
| 59 | struct KeyEvent |
| 60 | { |
| 61 | int32_t key_code; |
| 62 | int32_t scan_code; |
| 63 | int32_t repeat_count; |
| 64 | nsecs_t down_time; |
| 65 | nsecs_t event_time; |
| 66 | bool is_system_key; |
| 67 | } key; |
| 68 | struct MotionEvent |
| 69 | { |
| 70 | int32_t edge_flags; |
| 71 | int32_t button_state; |
| 72 | float x_offset; |
| 73 | float y_offset; |
| 74 | float x_precision; |
| 75 | float y_precision; |
| 76 | nsecs_t down_time; |
| 77 | nsecs_t event_time; |
| 78 | |
| 79 | size_t pointer_count; |
| 80 | struct PointerCoordinates |
| 81 | { |
| 82 | int id; |
| 83 | float x, raw_x; |
| 84 | float y, raw_y; |
| 85 | float touch_major; |
| 86 | float touch_minor; |
| 87 | float size; |
| 88 | float pressure; |
| 89 | float orientation; |
| 90 | } pointer; |
| 91 | struct PointerCoordinates pointer_coordinates[MAX_POINTER_COUNT]; |
| 92 | } motion; |
| 93 | } details; |
| 94 | }; |
| 95 | |
| 96 | typedef void (*on_new_event_callback)(struct Event* event, void* context); |
| 97 | |
| 98 | struct AndroidEventListener |
| 99 | { |
| 100 | on_new_event_callback on_new_event; |
| 101 | void* context; |
| 102 | }; |
| 103 | |
| 104 | struct InputStackConfiguration |
| 105 | { |
| 106 | bool enable_touch_point_visualization; |
| 107 | int default_layer_for_touch_point_visualization; |
| 108 | int input_area_width; |
| 109 | int input_area_height; |
| 110 | }; |
| 111 | |
| 112 | void android_input_stack_initialize( |
| 113 | struct AndroidEventListener* listener, |
| 114 | struct InputStackConfiguration* input_stack_configuration); |
| 115 | |
| 116 | void android_input_stack_loop_once(); |
| 117 | void android_input_stack_start(); |
| 118 | void android_input_stack_start_waiting_for_flag(bool* flag); |
| 119 | void android_input_stack_stop(); |
| 120 | void android_input_stack_shutdown(); |
| 121 | |
| 122 | #ifdef __cplusplus |
| 123 | } |
| 124 | #endif |
| 125 | |
| 126 | #endif // INPUT_STACK_COMPATIBILITY_LAYER_H_ |