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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_ |