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Jeff Brown46b9ac02010-04-22 18:58:52 -07001/*
2 * Copyright (C) 2010 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 _ANDROID_INPUT_H
18#define _ANDROID_INPUT_H
19
20/******************************************************************
21 *
22 * IMPORTANT NOTICE:
23 *
24 * This file is part of Android's set of stable system headers
25 * exposed by the Android NDK (Native Development Kit).
26 *
27 * Third-party source AND binary code relies on the definitions
28 * here to be FROZEN ON ALL UPCOMING PLATFORM RELEASES.
29 *
30 * - DO NOT MODIFY ENUMS (EXCEPT IF YOU ADD NEW 32-BIT VALUES)
31 * - DO NOT MODIFY CONSTANTS OR FUNCTIONAL MACROS
32 * - DO NOT CHANGE THE SIGNATURE OF FUNCTIONS IN ANY WAY
33 * - DO NOT CHANGE THE LAYOUT OR SIZE OF STRUCTURES
34 */
35
36/*
37 * Structures and functions to receive and process input events in
38 * native code.
39 *
40 * NOTE: These functions MUST be implemented by /system/lib/libui.so
41 */
42
Kenny Roote30de4e2010-07-28 16:41:02 -070043#include <stdint.h>
Jeff Brown46b9ac02010-04-22 18:58:52 -070044#include <sys/types.h>
45#include <android/keycodes.h>
Dianne Hackborn68267412010-07-02 18:52:01 -070046#include <android/looper.h>
Jeff Brown46b9ac02010-04-22 18:58:52 -070047
48#ifdef __cplusplus
49extern "C" {
50#endif
51
52/*
Jeff Brown46b9ac02010-04-22 18:58:52 -070053 * Key states (may be returned by queries about the current state of a
54 * particular key code, scan code or switch).
Jeff Brown46b9ac02010-04-22 18:58:52 -070055 */
56enum {
57 /* The key state is unknown or the requested key itself is not supported. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070058 AKEY_STATE_UNKNOWN = -1,
Jeff Brown46b9ac02010-04-22 18:58:52 -070059
60 /* The key is up. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070061 AKEY_STATE_UP = 0,
Jeff Brown46b9ac02010-04-22 18:58:52 -070062
63 /* The key is down. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070064 AKEY_STATE_DOWN = 1,
Jeff Brown46b9ac02010-04-22 18:58:52 -070065
66 /* The key is down but is a virtual key press that is being emulated by the system. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070067 AKEY_STATE_VIRTUAL = 2
Jeff Brown46b9ac02010-04-22 18:58:52 -070068};
69
70/*
71 * Meta key / modifer state.
72 */
73enum {
74 /* No meta keys are pressed. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070075 AMETA_NONE = 0,
Jeff Brown46b9ac02010-04-22 18:58:52 -070076
77 /* This mask is used to check whether one of the ALT meta keys is pressed. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070078 AMETA_ALT_ON = 0x02,
Jeff Brown46b9ac02010-04-22 18:58:52 -070079
80 /* This mask is used to check whether the left ALT meta key is pressed. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070081 AMETA_ALT_LEFT_ON = 0x10,
Jeff Brown46b9ac02010-04-22 18:58:52 -070082
83 /* This mask is used to check whether the right ALT meta key is pressed. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070084 AMETA_ALT_RIGHT_ON = 0x20,
Jeff Brown46b9ac02010-04-22 18:58:52 -070085
86 /* This mask is used to check whether one of the SHIFT meta keys is pressed. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070087 AMETA_SHIFT_ON = 0x01,
Jeff Brown46b9ac02010-04-22 18:58:52 -070088
89 /* This mask is used to check whether the left SHIFT meta key is pressed. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070090 AMETA_SHIFT_LEFT_ON = 0x40,
Jeff Brown46b9ac02010-04-22 18:58:52 -070091
92 /* This mask is used to check whether the right SHIFT meta key is pressed. */
Jeff Brownc5ed5912010-07-14 18:48:53 -070093 AMETA_SHIFT_RIGHT_ON = 0x80,
Jeff Brown46b9ac02010-04-22 18:58:52 -070094
95 /* This mask is used to check whether the SYM meta key is pressed. */
Jeff Brown497a92c2010-09-12 17:55:08 -070096 AMETA_SYM_ON = 0x04,
97
98 /* This mask is used to check whether the FUNCTION meta key is pressed. */
99 AMETA_FUNCTION_ON = 0x08,
100
101 /* This mask is used to check whether one of the CTRL meta keys is pressed. */
102 AMETA_CTRL_ON = 0x1000,
103
104 /* This mask is used to check whether the left CTRL meta key is pressed. */
105 AMETA_CTRL_LEFT_ON = 0x2000,
106
107 /* This mask is used to check whether the right CTRL meta key is pressed. */
108 AMETA_CTRL_RIGHT_ON = 0x4000,
109
110 /* This mask is used to check whether one of the META meta keys is pressed. */
111 AMETA_META_ON = 0x10000,
112
113 /* This mask is used to check whether the left META meta key is pressed. */
114 AMETA_META_LEFT_ON = 0x20000,
115
116 /* This mask is used to check whether the right META meta key is pressed. */
117 AMETA_META_RIGHT_ON = 0x40000,
118
Jeff Brown51e7fe72010-10-29 22:19:53 -0700119 /* This mask is used to check whether the CAPS LOCK meta key is on. */
120 AMETA_CAPS_LOCK_ON = 0x100000,
Jeff Brown497a92c2010-09-12 17:55:08 -0700121
Jeff Brown51e7fe72010-10-29 22:19:53 -0700122 /* This mask is used to check whether the NUM LOCK meta key is on. */
123 AMETA_NUM_LOCK_ON = 0x200000,
Jeff Brown497a92c2010-09-12 17:55:08 -0700124
Jeff Brown51e7fe72010-10-29 22:19:53 -0700125 /* This mask is used to check whether the SCROLL LOCK meta key is on. */
126 AMETA_SCROLL_LOCK_ON = 0x400000,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700127};
128
129/*
130 * Input events.
131 *
132 * Input events are opaque structures. Use the provided accessors functions to
133 * read their properties.
134 */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700135struct AInputEvent;
136typedef struct AInputEvent AInputEvent;
Jeff Brown46b9ac02010-04-22 18:58:52 -0700137
138/*
139 * Input event types.
140 */
141enum {
142 /* Indicates that the input event is a key event. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700143 AINPUT_EVENT_TYPE_KEY = 1,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700144
145 /* Indicates that the input event is a motion event. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700146 AINPUT_EVENT_TYPE_MOTION = 2
Jeff Brown46b9ac02010-04-22 18:58:52 -0700147};
148
149/*
150 * Key event actions.
151 */
152enum {
153 /* The key has been pressed down. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700154 AKEY_EVENT_ACTION_DOWN = 0,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700155
156 /* The key has been released. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700157 AKEY_EVENT_ACTION_UP = 1,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700158
159 /* Multiple duplicate key events have occurred in a row, or a complex string is
160 * being delivered. The repeat_count property of the key event contains the number
161 * of times the given key code should be executed.
162 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700163 AKEY_EVENT_ACTION_MULTIPLE = 2
Jeff Brown46b9ac02010-04-22 18:58:52 -0700164};
165
166/*
167 * Key event flags.
168 */
169enum {
170 /* This mask is set if the device woke because of this key event. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700171 AKEY_EVENT_FLAG_WOKE_HERE = 0x1,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700172
173 /* This mask is set if the key event was generated by a software keyboard. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700174 AKEY_EVENT_FLAG_SOFT_KEYBOARD = 0x2,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700175
176 /* This mask is set if we don't want the key event to cause us to leave touch mode. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700177 AKEY_EVENT_FLAG_KEEP_TOUCH_MODE = 0x4,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700178
179 /* This mask is set if an event was known to come from a trusted part
180 * of the system. That is, the event is known to come from the user,
181 * and could not have been spoofed by a third party component. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700182 AKEY_EVENT_FLAG_FROM_SYSTEM = 0x8,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700183
184 /* This mask is used for compatibility, to identify enter keys that are
185 * coming from an IME whose enter key has been auto-labelled "next" or
186 * "done". This allows TextView to dispatch these as normal enter keys
187 * for old applications, but still do the appropriate action when
188 * receiving them. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700189 AKEY_EVENT_FLAG_EDITOR_ACTION = 0x10,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700190
191 /* When associated with up key events, this indicates that the key press
192 * has been canceled. Typically this is used with virtual touch screen
193 * keys, where the user can slide from the virtual key area on to the
194 * display: in that case, the application will receive a canceled up
195 * event and should not perform the action normally associated with the
196 * key. Note that for this to work, the application can not perform an
197 * action for a key until it receives an up or the long press timeout has
198 * expired. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700199 AKEY_EVENT_FLAG_CANCELED = 0x20,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700200
201 /* This key event was generated by a virtual (on-screen) hard key area.
202 * Typically this is an area of the touchscreen, outside of the regular
203 * display, dedicated to "hardware" buttons. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700204 AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY = 0x40,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700205
206 /* This flag is set for the first key repeat that occurs after the
207 * long press timeout. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700208 AKEY_EVENT_FLAG_LONG_PRESS = 0x80,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700209
Jeff Brownc5ed5912010-07-14 18:48:53 -0700210 /* Set when a key event has AKEY_EVENT_FLAG_CANCELED set because a long
Jeff Brown46b9ac02010-04-22 18:58:52 -0700211 * press action was executed while it was down. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700212 AKEY_EVENT_FLAG_CANCELED_LONG_PRESS = 0x100,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700213
Jeff Brownc5ed5912010-07-14 18:48:53 -0700214 /* Set for AKEY_EVENT_ACTION_UP when this event's key code is still being
Jeff Brown46b9ac02010-04-22 18:58:52 -0700215 * tracked from its initial down. That is, somebody requested that tracking
216 * started on the key down and a long press has not caused
217 * the tracking to be canceled. */
Jeff Brown49ed71d2010-12-06 17:13:33 -0800218 AKEY_EVENT_FLAG_TRACKING = 0x200,
219
220 /* Set when a key event has been synthesized to implement default behavior
221 * for an event that the application did not handle.
222 * Fallback key events are generated by unhandled trackball motions
223 * (to emulate a directional keypad) and by certain unhandled key presses
224 * that are declared in the key map (such as special function numeric keypad
225 * keys when numlock is off). */
226 AKEY_EVENT_FLAG_FALLBACK = 0x400,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700227};
228
229/*
230 * Motion event actions.
231 */
232
233/* Bit shift for the action bits holding the pointer index as
Jeff Brownc5ed5912010-07-14 18:48:53 -0700234 * defined by AMOTION_EVENT_ACTION_POINTER_INDEX_MASK.
Jeff Brown46b9ac02010-04-22 18:58:52 -0700235 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700236#define AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT 8
Jeff Brown46b9ac02010-04-22 18:58:52 -0700237
238enum {
239 /* Bit mask of the parts of the action code that are the action itself.
240 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700241 AMOTION_EVENT_ACTION_MASK = 0xff,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700242
243 /* Bits in the action code that represent a pointer index, used with
Jeff Brownc5ed5912010-07-14 18:48:53 -0700244 * AMOTION_EVENT_ACTION_POINTER_DOWN and AMOTION_EVENT_ACTION_POINTER_UP. Shifting
245 * down by AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT provides the actual pointer
Jeff Brown46b9ac02010-04-22 18:58:52 -0700246 * index where the data for the pointer going up or down can be found.
247 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700248 AMOTION_EVENT_ACTION_POINTER_INDEX_MASK = 0xff00,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700249
250 /* A pressed gesture has started, the motion contains the initial starting location.
251 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700252 AMOTION_EVENT_ACTION_DOWN = 0,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700253
254 /* A pressed gesture has finished, the motion contains the final release location
255 * as well as any intermediate points since the last down or move event.
256 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700257 AMOTION_EVENT_ACTION_UP = 1,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700258
Jeff Brownc5ed5912010-07-14 18:48:53 -0700259 /* A change has happened during a press gesture (between AMOTION_EVENT_ACTION_DOWN and
260 * AMOTION_EVENT_ACTION_UP). The motion contains the most recent point, as well as
Jeff Brown46b9ac02010-04-22 18:58:52 -0700261 * any intermediate points since the last down or move event.
262 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700263 AMOTION_EVENT_ACTION_MOVE = 2,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700264
265 /* The current gesture has been aborted.
266 * You will not receive any more points in it. You should treat this as
267 * an up event, but not perform any action that you normally would.
268 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700269 AMOTION_EVENT_ACTION_CANCEL = 3,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700270
271 /* A movement has happened outside of the normal bounds of the UI element.
272 * This does not provide a full gesture, but only the initial location of the movement/touch.
273 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700274 AMOTION_EVENT_ACTION_OUTSIDE = 4,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700275
276 /* A non-primary pointer has gone down.
Jeff Brownc5ed5912010-07-14 18:48:53 -0700277 * The bits in AMOTION_EVENT_ACTION_POINTER_INDEX_MASK indicate which pointer changed.
Jeff Brown46b9ac02010-04-22 18:58:52 -0700278 */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700279 AMOTION_EVENT_ACTION_POINTER_DOWN = 5,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700280
281 /* A non-primary pointer has gone up.
Jeff Brownc5ed5912010-07-14 18:48:53 -0700282 * The bits in AMOTION_EVENT_ACTION_POINTER_INDEX_MASK indicate which pointer changed.
Jeff Brown46b9ac02010-04-22 18:58:52 -0700283 */
Jeff Browncc0c1592011-02-19 05:07:28 -0800284 AMOTION_EVENT_ACTION_POINTER_UP = 6,
285
286 /* A change happened but the pointer is not down (unlike AMOTION_EVENT_ACTION_MOVE).
287 * The motion contains the most recent point, as well as any intermediate points since
288 * the last hover move event.
289 */
290 AMOTION_EVENT_ACTION_HOVER_MOVE = 7,
Jeff Brown33bbfd22011-02-24 20:55:35 -0800291
292 /* The motion event contains relative vertical and/or horizontal scroll offsets.
293 * Use getAxisValue to retrieve the information from AMOTION_EVENT_AXIS_VSCROLL
294 * and AMOTION_EVENT_AXIS_HSCROLL.
295 * The pointer may or may not be down when this event is dispatched.
296 * This action is always delivered to the winder under the pointer, which
297 * may not be the window currently touched.
298 */
299 AMOTION_EVENT_ACTION_SCROLL = 8,
Jeff Browna032cc02011-03-07 16:56:21 -0800300
301 /* The pointer is not down but has entered the boundaries of a window or view.
302 */
303 AMOTION_EVENT_ACTION_HOVER_ENTER = 9,
304
305 /* The pointer is not down but has exited the boundaries of a window or view.
306 */
307 AMOTION_EVENT_ACTION_HOVER_EXIT = 10,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700308};
309
310/*
Jeff Brown85a31762010-09-01 17:01:00 -0700311 * Motion event flags.
312 */
313enum {
314 /* This flag indicates that the window that received this motion event is partly
315 * or wholly obscured by another visible window above it. This flag is set to true
316 * even if the event did not directly pass through the obscured area.
317 * A security sensitive application can check this flag to identify situations in which
318 * a malicious application may have covered up part of its content for the purpose
319 * of misleading the user or hijacking touches. An appropriate response might be
320 * to drop the suspect touches or to take additional precautions to confirm the user's
321 * actual intent.
322 */
323 AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED = 0x1,
324};
325
326/*
Jeff Brown46b9ac02010-04-22 18:58:52 -0700327 * Motion event edge touch flags.
328 */
329enum {
330 /* No edges intersected */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700331 AMOTION_EVENT_EDGE_FLAG_NONE = 0,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700332
333 /* Flag indicating the motion event intersected the top edge of the screen. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700334 AMOTION_EVENT_EDGE_FLAG_TOP = 0x01,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700335
336 /* Flag indicating the motion event intersected the bottom edge of the screen. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700337 AMOTION_EVENT_EDGE_FLAG_BOTTOM = 0x02,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700338
339 /* Flag indicating the motion event intersected the left edge of the screen. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700340 AMOTION_EVENT_EDGE_FLAG_LEFT = 0x04,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700341
342 /* Flag indicating the motion event intersected the right edge of the screen. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700343 AMOTION_EVENT_EDGE_FLAG_RIGHT = 0x08
Jeff Brown46b9ac02010-04-22 18:58:52 -0700344};
345
346/*
Jeff Brownebbd5d12011-02-17 13:01:34 -0800347 * Constants that identify each individual axis of a motion event.
Jeff Brown6f2fba42011-02-19 01:08:02 -0800348 * Refer to the documentation on the MotionEvent class for descriptions of each axis.
Jeff Brownebbd5d12011-02-17 13:01:34 -0800349 */
350enum {
351 AMOTION_EVENT_AXIS_X = 0,
352 AMOTION_EVENT_AXIS_Y = 1,
353 AMOTION_EVENT_AXIS_PRESSURE = 2,
354 AMOTION_EVENT_AXIS_SIZE = 3,
355 AMOTION_EVENT_AXIS_TOUCH_MAJOR = 4,
356 AMOTION_EVENT_AXIS_TOUCH_MINOR = 5,
357 AMOTION_EVENT_AXIS_TOOL_MAJOR = 6,
358 AMOTION_EVENT_AXIS_TOOL_MINOR = 7,
359 AMOTION_EVENT_AXIS_ORIENTATION = 8,
Jeff Brown6f2fba42011-02-19 01:08:02 -0800360 AMOTION_EVENT_AXIS_VSCROLL = 9,
361 AMOTION_EVENT_AXIS_HSCROLL = 10,
362 AMOTION_EVENT_AXIS_Z = 11,
363 AMOTION_EVENT_AXIS_RX = 12,
364 AMOTION_EVENT_AXIS_RY = 13,
365 AMOTION_EVENT_AXIS_RZ = 14,
366 AMOTION_EVENT_AXIS_HAT_X = 15,
367 AMOTION_EVENT_AXIS_HAT_Y = 16,
368 AMOTION_EVENT_AXIS_LTRIGGER = 17,
369 AMOTION_EVENT_AXIS_RTRIGGER = 18,
Jeff Brown3a22fa02011-03-04 13:07:49 -0800370 AMOTION_EVENT_AXIS_THROTTLE = 19,
371 AMOTION_EVENT_AXIS_RUDDER = 20,
372 AMOTION_EVENT_AXIS_WHEEL = 21,
373 AMOTION_EVENT_AXIS_GAS = 22,
374 AMOTION_EVENT_AXIS_BRAKE = 23,
Jeff Brown6f2fba42011-02-19 01:08:02 -0800375 AMOTION_EVENT_AXIS_GENERIC_1 = 32,
376 AMOTION_EVENT_AXIS_GENERIC_2 = 33,
377 AMOTION_EVENT_AXIS_GENERIC_3 = 34,
378 AMOTION_EVENT_AXIS_GENERIC_4 = 35,
379 AMOTION_EVENT_AXIS_GENERIC_5 = 36,
380 AMOTION_EVENT_AXIS_GENERIC_6 = 37,
381 AMOTION_EVENT_AXIS_GENERIC_7 = 38,
382 AMOTION_EVENT_AXIS_GENERIC_8 = 39,
383 AMOTION_EVENT_AXIS_GENERIC_9 = 40,
384 AMOTION_EVENT_AXIS_GENERIC_10 = 41,
385 AMOTION_EVENT_AXIS_GENERIC_11 = 42,
386 AMOTION_EVENT_AXIS_GENERIC_12 = 43,
387 AMOTION_EVENT_AXIS_GENERIC_13 = 44,
388 AMOTION_EVENT_AXIS_GENERIC_14 = 45,
389 AMOTION_EVENT_AXIS_GENERIC_15 = 46,
390 AMOTION_EVENT_AXIS_GENERIC_16 = 47,
391
392 // NOTE: If you add a new axis here you must also add it to several other files.
393 // Refer to frameworks/base/core/java/android/view/MotionEvent.java for the full list.
Jeff Brownebbd5d12011-02-17 13:01:34 -0800394};
395
396/*
Jeff Brownc5ed5912010-07-14 18:48:53 -0700397 * Input sources.
Jeff Brown46b9ac02010-04-22 18:58:52 -0700398 *
Jeff Brownc5ed5912010-07-14 18:48:53 -0700399 * Refer to the documentation on android.view.InputDevice for more details about input sources
400 * and their correct interpretation.
Jeff Brown46b9ac02010-04-22 18:58:52 -0700401 */
402enum {
Jeff Brownc5ed5912010-07-14 18:48:53 -0700403 AINPUT_SOURCE_CLASS_MASK = 0x000000ff,
404
405 AINPUT_SOURCE_CLASS_BUTTON = 0x00000001,
406 AINPUT_SOURCE_CLASS_POINTER = 0x00000002,
407 AINPUT_SOURCE_CLASS_NAVIGATION = 0x00000004,
408 AINPUT_SOURCE_CLASS_POSITION = 0x00000008,
Jeff Browncb1404e2011-01-15 18:14:15 -0800409 AINPUT_SOURCE_CLASS_JOYSTICK = 0x00000010,
Jeff Brownc5ed5912010-07-14 18:48:53 -0700410};
411
412enum {
413 AINPUT_SOURCE_UNKNOWN = 0x00000000,
414
415 AINPUT_SOURCE_KEYBOARD = 0x00000100 | AINPUT_SOURCE_CLASS_BUTTON,
416 AINPUT_SOURCE_DPAD = 0x00000200 | AINPUT_SOURCE_CLASS_BUTTON,
Jeff Browncb1404e2011-01-15 18:14:15 -0800417 AINPUT_SOURCE_GAMEPAD = 0x00000400 | AINPUT_SOURCE_CLASS_BUTTON,
Jeff Brownc5ed5912010-07-14 18:48:53 -0700418 AINPUT_SOURCE_TOUCHSCREEN = 0x00001000 | AINPUT_SOURCE_CLASS_POINTER,
419 AINPUT_SOURCE_MOUSE = 0x00002000 | AINPUT_SOURCE_CLASS_POINTER,
420 AINPUT_SOURCE_TRACKBALL = 0x00010000 | AINPUT_SOURCE_CLASS_NAVIGATION,
421 AINPUT_SOURCE_TOUCHPAD = 0x00100000 | AINPUT_SOURCE_CLASS_POSITION,
Jeff Browncb1404e2011-01-15 18:14:15 -0800422 AINPUT_SOURCE_JOYSTICK = 0x01000000 | AINPUT_SOURCE_CLASS_JOYSTICK,
Jeff Brownc3db8582010-10-20 15:33:38 -0700423
424 AINPUT_SOURCE_ANY = 0xffffff00,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700425};
426
427/*
Jeff Brown6d0fec22010-07-23 21:28:06 -0700428 * Keyboard types.
429 *
430 * Refer to the documentation on android.view.InputDevice for more details.
431 */
432enum {
433 AINPUT_KEYBOARD_TYPE_NONE = 0,
434 AINPUT_KEYBOARD_TYPE_NON_ALPHABETIC = 1,
435 AINPUT_KEYBOARD_TYPE_ALPHABETIC = 2,
436};
437
438/*
439 * Constants used to retrieve information about the range of motion for a particular
440 * coordinate of a motion event.
441 *
442 * Refer to the documentation on android.view.InputDevice for more details about input sources
443 * and their correct interpretation.
Jeff Brown91c69ab2011-02-14 17:03:18 -0800444 *
Jeff Brownebbd5d12011-02-17 13:01:34 -0800445 * DEPRECATION NOTICE: These constants are deprecated. Use AMOTION_EVENT_AXIS_* constants instead.
Jeff Brown6d0fec22010-07-23 21:28:06 -0700446 */
447enum {
Jeff Brownebbd5d12011-02-17 13:01:34 -0800448 AINPUT_MOTION_RANGE_X = AMOTION_EVENT_AXIS_X,
449 AINPUT_MOTION_RANGE_Y = AMOTION_EVENT_AXIS_Y,
450 AINPUT_MOTION_RANGE_PRESSURE = AMOTION_EVENT_AXIS_PRESSURE,
451 AINPUT_MOTION_RANGE_SIZE = AMOTION_EVENT_AXIS_SIZE,
452 AINPUT_MOTION_RANGE_TOUCH_MAJOR = AMOTION_EVENT_AXIS_TOUCH_MAJOR,
453 AINPUT_MOTION_RANGE_TOUCH_MINOR = AMOTION_EVENT_AXIS_TOUCH_MINOR,
454 AINPUT_MOTION_RANGE_TOOL_MAJOR = AMOTION_EVENT_AXIS_TOOL_MAJOR,
455 AINPUT_MOTION_RANGE_TOOL_MINOR = AMOTION_EVENT_AXIS_TOOL_MINOR,
456 AINPUT_MOTION_RANGE_ORIENTATION = AMOTION_EVENT_AXIS_ORIENTATION,
Jeff Brown91c69ab2011-02-14 17:03:18 -0800457} __attribute__ ((deprecated));
Jeff Brown6d0fec22010-07-23 21:28:06 -0700458
459
460/*
Jeff Brown46b9ac02010-04-22 18:58:52 -0700461 * Input event accessors.
462 *
463 * Note that most functions can only be used on input events that are of a given type.
464 * Calling these functions on input events of other types will yield undefined behavior.
465 */
466
467/*** Accessors for all input events. ***/
468
469/* Get the input event type. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700470int32_t AInputEvent_getType(const AInputEvent* event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700471
472/* Get the id for the device that an input event came from.
473 *
474 * Input events can be generated by multiple different input devices.
475 * Use the input device id to obtain information about the input
476 * device that was responsible for generating a particular event.
477 *
478 * An input device id of 0 indicates that the event didn't come from a physical device;
479 * other numbers are arbitrary and you shouldn't depend on the values.
480 * Use the provided input device query API to obtain information about input devices.
481 */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700482int32_t AInputEvent_getDeviceId(const AInputEvent* event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700483
Jeff Brownc5ed5912010-07-14 18:48:53 -0700484/* Get the input event source. */
485int32_t AInputEvent_getSource(const AInputEvent* event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700486
487/*** Accessors for key events only. ***/
488
489/* Get the key event action. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700490int32_t AKeyEvent_getAction(const AInputEvent* key_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700491
492/* Get the key event flags. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700493int32_t AKeyEvent_getFlags(const AInputEvent* key_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700494
495/* Get the key code of the key event.
496 * This is the physical key that was pressed, not the Unicode character. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700497int32_t AKeyEvent_getKeyCode(const AInputEvent* key_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700498
499/* Get the hardware key id of this key event.
500 * These values are not reliable and vary from device to device. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700501int32_t AKeyEvent_getScanCode(const AInputEvent* key_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700502
503/* Get the meta key state. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700504int32_t AKeyEvent_getMetaState(const AInputEvent* key_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700505
506/* Get the repeat count of the event.
507 * For both key up an key down events, this is the number of times the key has
508 * repeated with the first down starting at 0 and counting up from there. For
509 * multiple key events, this is the number of down/up pairs that have occurred. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700510int32_t AKeyEvent_getRepeatCount(const AInputEvent* key_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700511
512/* Get the time of the most recent key down event, in the
513 * java.lang.System.nanoTime() time base. If this is a down event,
514 * this will be the same as eventTime.
515 * Note that when chording keys, this value is the down time of the most recently
516 * pressed key, which may not be the same physical key of this event. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700517int64_t AKeyEvent_getDownTime(const AInputEvent* key_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700518
519/* Get the time this event occurred, in the
520 * java.lang.System.nanoTime() time base. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700521int64_t AKeyEvent_getEventTime(const AInputEvent* key_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700522
523/*** Accessors for motion events only. ***/
524
525/* Get the combined motion event action code and pointer index. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700526int32_t AMotionEvent_getAction(const AInputEvent* motion_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700527
Jeff Brown85a31762010-09-01 17:01:00 -0700528/* Get the motion event flags. */
529int32_t AMotionEvent_getFlags(const AInputEvent* motion_event);
530
Jeff Brown46b9ac02010-04-22 18:58:52 -0700531/* Get the state of any meta / modifier keys that were in effect when the
532 * event was generated. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700533int32_t AMotionEvent_getMetaState(const AInputEvent* motion_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700534
535/* Get a bitfield indicating which edges, if any, were touched by this motion event.
536 * For touch events, clients can use this to determine if the user's finger was
537 * touching the edge of the display. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700538int32_t AMotionEvent_getEdgeFlags(const AInputEvent* motion_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700539
540/* Get the time when the user originally pressed down to start a stream of
541 * position events, in the java.lang.System.nanoTime() time base. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700542int64_t AMotionEvent_getDownTime(const AInputEvent* motion_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700543
544/* Get the time when this specific event was generated,
545 * in the java.lang.System.nanoTime() time base. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700546int64_t AMotionEvent_getEventTime(const AInputEvent* motion_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700547
Jeff Brown5c225b12010-06-16 01:53:36 -0700548/* Get the X coordinate offset.
549 * For touch events on the screen, this is the delta that was added to the raw
550 * screen coordinates to adjust for the absolute position of the containing windows
551 * and views. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700552float AMotionEvent_getXOffset(const AInputEvent* motion_event);
Jeff Brown5c225b12010-06-16 01:53:36 -0700553
554/* Get the precision of the Y coordinates being reported.
555 * For touch events on the screen, this is the delta that was added to the raw
556 * screen coordinates to adjust for the absolute position of the containing windows
557 * and views. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700558float AMotionEvent_getYOffset(const AInputEvent* motion_event);
Jeff Brown5c225b12010-06-16 01:53:36 -0700559
Jeff Brown46b9ac02010-04-22 18:58:52 -0700560/* Get the precision of the X coordinates being reported.
561 * You can multiply this number with an X coordinate sample to find the
562 * actual hardware value of the X coordinate. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700563float AMotionEvent_getXPrecision(const AInputEvent* motion_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700564
565/* Get the precision of the Y coordinates being reported.
566 * You can multiply this number with a Y coordinate sample to find the
567 * actual hardware value of the Y coordinate. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700568float AMotionEvent_getYPrecision(const AInputEvent* motion_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700569
570/* Get the number of pointers of data contained in this event.
571 * Always >= 1. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700572size_t AMotionEvent_getPointerCount(const AInputEvent* motion_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700573
574/* Get the pointer identifier associated with a particular pointer
575 * data index is this event. The identifier tells you the actual pointer
576 * number associated with the data, accounting for individual pointers
577 * going up and down since the start of the current gesture. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700578int32_t AMotionEvent_getPointerId(const AInputEvent* motion_event, size_t pointer_index);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700579
Jeff Brown5c225b12010-06-16 01:53:36 -0700580/* Get the original raw X coordinate of this event.
581 * For touch events on the screen, this is the original location of the event
Jeff Brown46b9ac02010-04-22 18:58:52 -0700582 * on the screen, before it had been adjusted for the containing window
583 * and views. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700584float AMotionEvent_getRawX(const AInputEvent* motion_event, size_t pointer_index);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700585
Jeff Brown5c225b12010-06-16 01:53:36 -0700586/* Get the original raw X coordinate of this event.
587 * For touch events on the screen, this is the original location of the event
Jeff Brown46b9ac02010-04-22 18:58:52 -0700588 * on the screen, before it had been adjusted for the containing window
589 * and views. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700590float AMotionEvent_getRawY(const AInputEvent* motion_event, size_t pointer_index);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700591
592/* Get the current X coordinate of this event for the given pointer index.
593 * Whole numbers are pixels; the value may have a fraction for input devices
594 * that are sub-pixel precise. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700595float AMotionEvent_getX(const AInputEvent* motion_event, size_t pointer_index);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700596
597/* Get the current Y coordinate of this event for the given pointer index.
598 * Whole numbers are pixels; the value may have a fraction for input devices
599 * that are sub-pixel precise. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700600float AMotionEvent_getY(const AInputEvent* motion_event, size_t pointer_index);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700601
602/* Get the current pressure of this event for the given pointer index.
603 * The pressure generally ranges from 0 (no pressure at all) to 1 (normal pressure),
Jeff Brown91c69ab2011-02-14 17:03:18 -0800604 * although values higher than 1 may be generated depending on the calibration of
Jeff Brown46b9ac02010-04-22 18:58:52 -0700605 * the input device. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700606float AMotionEvent_getPressure(const AInputEvent* motion_event, size_t pointer_index);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700607
608/* Get the current scaled value of the approximate size for the given pointer index.
609 * This represents some approximation of the area of the screen being
610 * pressed; the actual value in pixels corresponding to the
611 * touch is normalized with the device specific range of values
612 * and scaled to a value between 0 and 1. The value of size can be used to
613 * determine fat touch events. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700614float AMotionEvent_getSize(const AInputEvent* motion_event, size_t pointer_index);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700615
Jeff Brownc5ed5912010-07-14 18:48:53 -0700616/* Get the current length of the major axis of an ellipse that describes the touch area
617 * at the point of contact for the given pointer index. */
618float AMotionEvent_getTouchMajor(const AInputEvent* motion_event, size_t pointer_index);
619
620/* Get the current length of the minor axis of an ellipse that describes the touch area
621 * at the point of contact for the given pointer index. */
622float AMotionEvent_getTouchMinor(const AInputEvent* motion_event, size_t pointer_index);
623
624/* Get the current length of the major axis of an ellipse that describes the size
625 * of the approaching tool for the given pointer index.
626 * The tool area represents the estimated size of the finger or pen that is
627 * touching the device independent of its actual touch area at the point of contact. */
628float AMotionEvent_getToolMajor(const AInputEvent* motion_event, size_t pointer_index);
629
630/* Get the current length of the minor axis of an ellipse that describes the size
631 * of the approaching tool for the given pointer index.
632 * The tool area represents the estimated size of the finger or pen that is
633 * touching the device independent of its actual touch area at the point of contact. */
634float AMotionEvent_getToolMinor(const AInputEvent* motion_event, size_t pointer_index);
635
636/* Get the current orientation of the touch area and tool area in radians clockwise from
637 * vertical for the given pointer index.
638 * An angle of 0 degrees indicates that the major axis of contact is oriented
639 * upwards, is perfectly circular or is of unknown orientation. A positive angle
640 * indicates that the major axis of contact is oriented to the right. A negative angle
641 * indicates that the major axis of contact is oriented to the left.
Jeff Brown6d0fec22010-07-23 21:28:06 -0700642 * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians
Jeff Brownc5ed5912010-07-14 18:48:53 -0700643 * (finger pointing fully right). */
644float AMotionEvent_getOrientation(const AInputEvent* motion_event, size_t pointer_index);
645
Jeff Brown91c69ab2011-02-14 17:03:18 -0800646/* Get the value of the request axis for the given pointer index. */
647float AMotionEvent_getAxisValue(const AInputEvent* motion_event,
648 int32_t axis, size_t pointer_index);
649
Jeff Brown46b9ac02010-04-22 18:58:52 -0700650/* Get the number of historical points in this event. These are movements that
651 * have occurred between this event and the previous event. This only applies
Jeff Brownc5ed5912010-07-14 18:48:53 -0700652 * to AMOTION_EVENT_ACTION_MOVE events -- all other actions will have a size of 0.
Jeff Brown46b9ac02010-04-22 18:58:52 -0700653 * Historical samples are indexed from oldest to newest. */
Jeff Brownc5ed5912010-07-14 18:48:53 -0700654size_t AMotionEvent_getHistorySize(const AInputEvent* motion_event);
Jeff Brown46b9ac02010-04-22 18:58:52 -0700655
656/* Get the time that a historical movement occurred between this event and
657 * the previous event, in the java.lang.System.nanoTime() time base. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700658int64_t AMotionEvent_getHistoricalEventTime(AInputEvent* motion_event,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700659 size_t history_index);
660
Jeff Brown5c225b12010-06-16 01:53:36 -0700661/* Get the historical raw X coordinate of this event for the given pointer index that
662 * occurred between this event and the previous motion event.
663 * For touch events on the screen, this is the original location of the event
664 * on the screen, before it had been adjusted for the containing window
665 * and views.
666 * Whole numbers are pixels; the value may have a fraction for input devices
667 * that are sub-pixel precise. */
Jeff Browne325e9a2011-03-16 11:52:47 -0700668float AMotionEvent_getHistoricalRawX(const AInputEvent* motion_event, size_t pointer_index,
669 size_t history_index);
Jeff Brown5c225b12010-06-16 01:53:36 -0700670
671/* Get the historical raw Y coordinate of this event for the given pointer index that
672 * occurred between this event and the previous motion event.
673 * For touch events on the screen, this is the original location of the event
674 * on the screen, before it had been adjusted for the containing window
675 * and views.
676 * Whole numbers are pixels; the value may have a fraction for input devices
677 * that are sub-pixel precise. */
Jeff Browne325e9a2011-03-16 11:52:47 -0700678float AMotionEvent_getHistoricalRawY(const AInputEvent* motion_event, size_t pointer_index,
679 size_t history_index);
Jeff Brown5c225b12010-06-16 01:53:36 -0700680
Jeff Brown46b9ac02010-04-22 18:58:52 -0700681/* Get the historical X coordinate of this event for the given pointer index that
682 * occurred between this event and the previous motion event.
683 * Whole numbers are pixels; the value may have a fraction for input devices
684 * that are sub-pixel precise. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700685float AMotionEvent_getHistoricalX(AInputEvent* motion_event, size_t pointer_index,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700686 size_t history_index);
687
688/* Get the historical Y coordinate of this event for the given pointer index that
689 * occurred between this event and the previous motion event.
690 * Whole numbers are pixels; the value may have a fraction for input devices
691 * that are sub-pixel precise. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700692float AMotionEvent_getHistoricalY(AInputEvent* motion_event, size_t pointer_index,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700693 size_t history_index);
694
695/* Get the historical pressure of this event for the given pointer index that
696 * occurred between this event and the previous motion event.
697 * The pressure generally ranges from 0 (no pressure at all) to 1 (normal pressure),
Jeff Brown91c69ab2011-02-14 17:03:18 -0800698 * although values higher than 1 may be generated depending on the calibration of
Jeff Brown46b9ac02010-04-22 18:58:52 -0700699 * the input device. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700700float AMotionEvent_getHistoricalPressure(AInputEvent* motion_event, size_t pointer_index,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700701 size_t history_index);
702
703/* Get the current scaled value of the approximate size for the given pointer index that
704 * occurred between this event and the previous motion event.
705 * This represents some approximation of the area of the screen being
706 * pressed; the actual value in pixels corresponding to the
707 * touch is normalized with the device specific range of values
708 * and scaled to a value between 0 and 1. The value of size can be used to
709 * determine fat touch events. */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700710float AMotionEvent_getHistoricalSize(AInputEvent* motion_event, size_t pointer_index,
Jeff Brown46b9ac02010-04-22 18:58:52 -0700711 size_t history_index);
712
Jeff Brownc5ed5912010-07-14 18:48:53 -0700713/* Get the historical length of the major axis of an ellipse that describes the touch area
714 * at the point of contact for the given pointer index that
715 * occurred between this event and the previous motion event. */
716float AMotionEvent_getHistoricalTouchMajor(const AInputEvent* motion_event, size_t pointer_index,
717 size_t history_index);
718
719/* Get the historical length of the minor axis of an ellipse that describes the touch area
720 * at the point of contact for the given pointer index that
721 * occurred between this event and the previous motion event. */
722float AMotionEvent_getHistoricalTouchMinor(const AInputEvent* motion_event, size_t pointer_index,
723 size_t history_index);
724
725/* Get the historical length of the major axis of an ellipse that describes the size
726 * of the approaching tool for the given pointer index that
727 * occurred between this event and the previous motion event.
728 * The tool area represents the estimated size of the finger or pen that is
729 * touching the device independent of its actual touch area at the point of contact. */
730float AMotionEvent_getHistoricalToolMajor(const AInputEvent* motion_event, size_t pointer_index,
731 size_t history_index);
732
733/* Get the historical length of the minor axis of an ellipse that describes the size
734 * of the approaching tool for the given pointer index that
735 * occurred between this event and the previous motion event.
736 * The tool area represents the estimated size of the finger or pen that is
737 * touching the device independent of its actual touch area at the point of contact. */
738float AMotionEvent_getHistoricalToolMinor(const AInputEvent* motion_event, size_t pointer_index,
739 size_t history_index);
740
741/* Get the historical orientation of the touch area and tool area in radians clockwise from
742 * vertical for the given pointer index that
743 * occurred between this event and the previous motion event.
744 * An angle of 0 degrees indicates that the major axis of contact is oriented
745 * upwards, is perfectly circular or is of unknown orientation. A positive angle
746 * indicates that the major axis of contact is oriented to the right. A negative angle
747 * indicates that the major axis of contact is oriented to the left.
Jeff Brown6d0fec22010-07-23 21:28:06 -0700748 * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians
Jeff Brownc5ed5912010-07-14 18:48:53 -0700749 * (finger pointing fully right). */
750float AMotionEvent_getHistoricalOrientation(const AInputEvent* motion_event, size_t pointer_index,
751 size_t history_index);
752
Jeff Brown91c69ab2011-02-14 17:03:18 -0800753/* Get the historical value of the request axis for the given pointer index
754 * that occurred between this event and the previous motion event. */
755float AMotionEvent_getHistoricalAxisValue(const AInputEvent* motion_event,
756 int32_t axis, size_t pointer_index, size_t history_index);
757
Jeff Brownc5ed5912010-07-14 18:48:53 -0700758
Dianne Hackborna95e4cb2010-06-18 18:09:33 -0700759/*
760 * Input queue
761 *
762 * An input queue is the facility through which you retrieve input
763 * events.
764 */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700765struct AInputQueue;
766typedef struct AInputQueue AInputQueue;
Dianne Hackborna95e4cb2010-06-18 18:09:33 -0700767
768/*
Dianne Hackborn85448bb2010-07-07 14:27:31 -0700769 * Add this input queue to a looper for processing. See
Dianne Hackborn42c03e52010-09-07 15:28:30 -0700770 * ALooper_addFd() for information on the ident, callback, and data params.
Dianne Hackborna95e4cb2010-06-18 18:09:33 -0700771 */
Dianne Hackborn68267412010-07-02 18:52:01 -0700772void AInputQueue_attachLooper(AInputQueue* queue, ALooper* looper,
Jeff Brown4fe6c3e2010-09-13 23:17:30 -0700773 int ident, ALooper_callbackFunc callback, void* data);
Dianne Hackborn68267412010-07-02 18:52:01 -0700774
775/*
776 * Remove the input queue from the looper it is currently attached to.
777 */
778void AInputQueue_detachLooper(AInputQueue* queue);
Dianne Hackborna95e4cb2010-06-18 18:09:33 -0700779
780/*
781 * Returns true if there are one or more events available in the
782 * input queue. Returns 1 if the queue has events; 0 if
783 * it does not have events; and a negative value if there is an error.
784 */
Dianne Hackborn2c6081c2010-07-15 17:44:53 -0700785int32_t AInputQueue_hasEvents(AInputQueue* queue);
Dianne Hackborna95e4cb2010-06-18 18:09:33 -0700786
787/*
788 * Returns the next available event from the queue. Returns a negative
789 * value if no events are available or an error has occurred.
790 */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700791int32_t AInputQueue_getEvent(AInputQueue* queue, AInputEvent** outEvent);
Dianne Hackborna95e4cb2010-06-18 18:09:33 -0700792
793/*
Dianne Hackborn2c6081c2010-07-15 17:44:53 -0700794 * Sends the key for standard pre-dispatching -- that is, possibly deliver
795 * it to the current IME to be consumed before the app. Returns 0 if it
796 * was not pre-dispatched, meaning you can process it right now. If non-zero
797 * is returned, you must abandon the current event processing and allow the
798 * event to appear again in the event queue (if it does not get consumed during
799 * pre-dispatching).
800 */
801int32_t AInputQueue_preDispatchEvent(AInputQueue* queue, AInputEvent* event);
802
803/*
Dianne Hackborna95e4cb2010-06-18 18:09:33 -0700804 * Report that dispatching has finished with the given event.
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700805 * This must be called after receiving an event with AInputQueue_get_event().
Dianne Hackborna95e4cb2010-06-18 18:09:33 -0700806 */
Dianne Hackborn2e9f93e2010-06-28 15:27:30 -0700807void AInputQueue_finishEvent(AInputQueue* queue, AInputEvent* event, int handled);
Dianne Hackborna95e4cb2010-06-18 18:09:33 -0700808
Jeff Brown46b9ac02010-04-22 18:58:52 -0700809#ifdef __cplusplus
810}
811#endif
812
813#endif // _ANDROID_INPUT_H