2 * Copyright (C) 2010 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef _LIBINPUT_INPUT_H
18 #define _LIBINPUT_INPUT_H
21 * Native input event structures.
24 #include <android/input.h>
25 #include <utils/Vector.h>
26 #include <utils/KeyedVector.h>
27 #include <utils/Timers.h>
28 #include <utils/RefBase.h>
29 #include <utils/String8.h>
32 * Additional private constants not defined in ndk/ui/input.h.
35 /* Signifies that the key is being predispatched */
36 AKEY_EVENT_FLAG_PREDISPATCH = 0x20000000,
38 /* Private control to determine when an app is tracking a key sequence. */
39 AKEY_EVENT_FLAG_START_TRACKING = 0x40000000,
41 /* Key event is inconsistent with previously sent key events. */
42 AKEY_EVENT_FLAG_TAINTED = 0x80000000,
46 /* Motion event is inconsistent with previously sent motion events. */
47 AMOTION_EVENT_FLAG_TAINTED = 0x80000000,
51 /* Used when a motion event is not associated with any display.
52 * Typically used for non-pointer events. */
53 ADISPLAY_ID_NONE = -1,
55 /* The default display id. */
56 ADISPLAY_ID_DEFAULT = 0,
61 * Indicates that an input device has switches.
62 * This input source flag is hidden from the API because switches are only used by the system
63 * and applications have no way to interact with them.
65 AINPUT_SOURCE_SWITCH = 0x80000000,
69 * SystemUiVisibility constants from View.
72 ASYSTEM_UI_VISIBILITY_STATUS_BAR_VISIBLE = 0,
73 ASYSTEM_UI_VISIBILITY_STATUS_BAR_HIDDEN = 0x00000001,
77 * Maximum number of pointers supported per motion event.
78 * Smallest number of pointers is 1.
79 * (We want at least 10 but some touch controllers obstensibly configured for 10 pointers
80 * will occasionally emit 11. There is not much harm making this constant bigger.)
82 #define MAX_POINTERS 16
85 * Maximum pointer id value supported in a motion event.
86 * Smallest pointer id is 0.
87 * (This is limited by our use of BitSet32 to track pointer assignments.)
89 #define MAX_POINTER_ID 31
92 * Declare a concrete type for the NDK's input event forward declaration.
95 virtual ~AInputEvent() { }
99 * Declare a concrete type for the NDK's input device forward declaration.
101 struct AInputDevice {
102 virtual ~AInputDevice() { }
108 #ifdef HAVE_ANDROID_OS
113 * Flags that flow alongside events in the input dispatch system to help with certain
114 * policy decisions such as waking from device sleep.
116 * These flags are also defined in frameworks/base/core/java/android/view/WindowManagerPolicy.java.
119 /* These flags originate in RawEvents and are generally set in the key map.
120 * NOTE: If you edit these flags, also edit labels in KeycodeLabels.h. */
122 POLICY_FLAG_WAKE = 0x00000001,
123 POLICY_FLAG_WAKE_DROPPED = 0x00000002,
124 POLICY_FLAG_SHIFT = 0x00000004,
125 POLICY_FLAG_CAPS_LOCK = 0x00000008,
126 POLICY_FLAG_ALT = 0x00000010,
127 POLICY_FLAG_ALT_GR = 0x00000020,
128 POLICY_FLAG_MENU = 0x00000040,
129 POLICY_FLAG_LAUNCHER = 0x00000080,
130 POLICY_FLAG_VIRTUAL = 0x00000100,
131 POLICY_FLAG_FUNCTION = 0x00000200,
133 POLICY_FLAG_RAW_MASK = 0x0000ffff,
135 /* These flags are set by the input dispatcher. */
137 // Indicates that the input event was injected.
138 POLICY_FLAG_INJECTED = 0x01000000,
140 // Indicates that the input event is from a trusted source such as a directly attached
141 // input device or an application with system-wide event injection permission.
142 POLICY_FLAG_TRUSTED = 0x02000000,
144 // Indicates that the input event has passed through an input filter.
145 POLICY_FLAG_FILTERED = 0x04000000,
147 // Disables automatic key repeating behavior.
148 POLICY_FLAG_DISABLE_KEY_REPEAT = 0x08000000,
150 /* These flags are set by the input reader policy as it intercepts each event. */
152 // Indicates that the screen was off when the event was received and the event
153 // should wake the device.
154 POLICY_FLAG_WOKE_HERE = 0x10000000,
156 // Indicates that the screen was dim when the event was received and the event
157 // should brighten the device.
158 POLICY_FLAG_BRIGHT_HERE = 0x20000000,
160 // Indicates that the event should be dispatched to applications.
161 // The input event should still be sent to the InputDispatcher so that it can see all
162 // input events received include those that it will not deliver.
163 POLICY_FLAG_PASS_TO_USER = 0x40000000,
167 * Pointer coordinate data.
169 struct PointerCoords {
170 enum { MAX_AXES = 14 }; // 14 so that sizeof(PointerCoords) == 64
172 // Bitfield of axes that are present in this structure.
175 // Values of axes that are stored in this structure packed in order by axis id
176 // for each axis that is present in the structure according to 'bits'.
177 float values[MAX_AXES];
179 inline void clear() {
183 float getAxisValue(int32_t axis) const;
184 status_t setAxisValue(int32_t axis, float value);
186 void scale(float scale);
188 inline float getX() const {
189 return getAxisValue(AMOTION_EVENT_AXIS_X);
192 inline float getY() const {
193 return getAxisValue(AMOTION_EVENT_AXIS_Y);
196 #ifdef HAVE_ANDROID_OS
197 status_t readFromParcel(Parcel* parcel);
198 status_t writeToParcel(Parcel* parcel) const;
201 bool operator==(const PointerCoords& other) const;
202 inline bool operator!=(const PointerCoords& other) const {
203 return !(*this == other);
206 void copyFrom(const PointerCoords& other);
209 void tooManyAxes(int axis);
213 * Pointer property data.
215 struct PointerProperties {
216 // The id of the pointer.
219 // The pointer tool type.
222 inline void clear() {
227 bool operator==(const PointerProperties& other) const;
228 inline bool operator!=(const PointerProperties& other) const {
229 return !(*this == other);
232 void copyFrom(const PointerProperties& other);
238 class InputEvent : public AInputEvent {
240 virtual ~InputEvent() { }
242 virtual int32_t getType() const = 0;
244 inline int32_t getDeviceId() const { return mDeviceId; }
246 inline int32_t getSource() const { return mSource; }
248 inline void setSource(int32_t source) { mSource = source; }
251 void initialize(int32_t deviceId, int32_t source);
252 void initialize(const InputEvent& from);
261 class KeyEvent : public InputEvent {
263 virtual ~KeyEvent() { }
265 virtual int32_t getType() const { return AINPUT_EVENT_TYPE_KEY; }
267 inline int32_t getAction() const { return mAction; }
269 inline int32_t getFlags() const { return mFlags; }
271 inline void setFlags(int32_t flags) { mFlags = flags; }
273 inline int32_t getKeyCode() const { return mKeyCode; }
275 inline int32_t getScanCode() const { return mScanCode; }
277 inline int32_t getMetaState() const { return mMetaState; }
279 inline int32_t getRepeatCount() const { return mRepeatCount; }
281 inline nsecs_t getDownTime() const { return mDownTime; }
283 inline nsecs_t getEventTime() const { return mEventTime; }
285 // Return true if this event may have a default action implementation.
286 static bool hasDefaultAction(int32_t keyCode);
287 bool hasDefaultAction() const;
289 // Return true if this event represents a system key.
290 static bool isSystemKey(int32_t keyCode);
291 bool isSystemKey() const;
304 void initialize(const KeyEvent& from);
312 int32_t mRepeatCount;
320 class MotionEvent : public InputEvent {
322 virtual ~MotionEvent() { }
324 virtual int32_t getType() const { return AINPUT_EVENT_TYPE_MOTION; }
326 inline int32_t getAction() const { return mAction; }
328 inline int32_t getActionMasked() const { return mAction & AMOTION_EVENT_ACTION_MASK; }
330 inline int32_t getActionIndex() const {
331 return (mAction & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK)
332 >> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
335 inline void setAction(int32_t action) { mAction = action; }
337 inline int32_t getFlags() const { return mFlags; }
339 inline void setFlags(int32_t flags) { mFlags = flags; }
341 inline int32_t getEdgeFlags() const { return mEdgeFlags; }
343 inline void setEdgeFlags(int32_t edgeFlags) { mEdgeFlags = edgeFlags; }
345 inline int32_t getMetaState() const { return mMetaState; }
347 inline void setMetaState(int32_t metaState) { mMetaState = metaState; }
349 inline int32_t getButtonState() const { return mButtonState; }
351 inline float getXOffset() const { return mXOffset; }
353 inline float getYOffset() const { return mYOffset; }
355 inline float getXPrecision() const { return mXPrecision; }
357 inline float getYPrecision() const { return mYPrecision; }
359 inline nsecs_t getDownTime() const { return mDownTime; }
361 inline void setDownTime(nsecs_t downTime) { mDownTime = downTime; }
363 inline size_t getPointerCount() const { return mPointerProperties.size(); }
365 inline const PointerProperties* getPointerProperties(size_t pointerIndex) const {
366 return &mPointerProperties[pointerIndex];
369 inline int32_t getPointerId(size_t pointerIndex) const {
370 return mPointerProperties[pointerIndex].id;
373 inline int32_t getToolType(size_t pointerIndex) const {
374 return mPointerProperties[pointerIndex].toolType;
377 inline nsecs_t getEventTime() const { return mSampleEventTimes[getHistorySize()]; }
379 const PointerCoords* getRawPointerCoords(size_t pointerIndex) const;
381 float getRawAxisValue(int32_t axis, size_t pointerIndex) const;
383 inline float getRawX(size_t pointerIndex) const {
384 return getRawAxisValue(AMOTION_EVENT_AXIS_X, pointerIndex);
387 inline float getRawY(size_t pointerIndex) const {
388 return getRawAxisValue(AMOTION_EVENT_AXIS_Y, pointerIndex);
391 float getAxisValue(int32_t axis, size_t pointerIndex) const;
393 inline float getX(size_t pointerIndex) const {
394 return getAxisValue(AMOTION_EVENT_AXIS_X, pointerIndex);
397 inline float getY(size_t pointerIndex) const {
398 return getAxisValue(AMOTION_EVENT_AXIS_Y, pointerIndex);
401 inline float getPressure(size_t pointerIndex) const {
402 return getAxisValue(AMOTION_EVENT_AXIS_PRESSURE, pointerIndex);
405 inline float getSize(size_t pointerIndex) const {
406 return getAxisValue(AMOTION_EVENT_AXIS_SIZE, pointerIndex);
409 inline float getTouchMajor(size_t pointerIndex) const {
410 return getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, pointerIndex);
413 inline float getTouchMinor(size_t pointerIndex) const {
414 return getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, pointerIndex);
417 inline float getToolMajor(size_t pointerIndex) const {
418 return getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, pointerIndex);
421 inline float getToolMinor(size_t pointerIndex) const {
422 return getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, pointerIndex);
425 inline float getOrientation(size_t pointerIndex) const {
426 return getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, pointerIndex);
429 inline size_t getHistorySize() const { return mSampleEventTimes.size() - 1; }
431 inline nsecs_t getHistoricalEventTime(size_t historicalIndex) const {
432 return mSampleEventTimes[historicalIndex];
435 const PointerCoords* getHistoricalRawPointerCoords(
436 size_t pointerIndex, size_t historicalIndex) const;
438 float getHistoricalRawAxisValue(int32_t axis, size_t pointerIndex,
439 size_t historicalIndex) const;
441 inline float getHistoricalRawX(size_t pointerIndex, size_t historicalIndex) const {
442 return getHistoricalRawAxisValue(
443 AMOTION_EVENT_AXIS_X, pointerIndex, historicalIndex);
446 inline float getHistoricalRawY(size_t pointerIndex, size_t historicalIndex) const {
447 return getHistoricalRawAxisValue(
448 AMOTION_EVENT_AXIS_Y, pointerIndex, historicalIndex);
451 float getHistoricalAxisValue(int32_t axis, size_t pointerIndex, size_t historicalIndex) const;
453 inline float getHistoricalX(size_t pointerIndex, size_t historicalIndex) const {
454 return getHistoricalAxisValue(
455 AMOTION_EVENT_AXIS_X, pointerIndex, historicalIndex);
458 inline float getHistoricalY(size_t pointerIndex, size_t historicalIndex) const {
459 return getHistoricalAxisValue(
460 AMOTION_EVENT_AXIS_Y, pointerIndex, historicalIndex);
463 inline float getHistoricalPressure(size_t pointerIndex, size_t historicalIndex) const {
464 return getHistoricalAxisValue(
465 AMOTION_EVENT_AXIS_PRESSURE, pointerIndex, historicalIndex);
468 inline float getHistoricalSize(size_t pointerIndex, size_t historicalIndex) const {
469 return getHistoricalAxisValue(
470 AMOTION_EVENT_AXIS_SIZE, pointerIndex, historicalIndex);
473 inline float getHistoricalTouchMajor(size_t pointerIndex, size_t historicalIndex) const {
474 return getHistoricalAxisValue(
475 AMOTION_EVENT_AXIS_TOUCH_MAJOR, pointerIndex, historicalIndex);
478 inline float getHistoricalTouchMinor(size_t pointerIndex, size_t historicalIndex) const {
479 return getHistoricalAxisValue(
480 AMOTION_EVENT_AXIS_TOUCH_MINOR, pointerIndex, historicalIndex);
483 inline float getHistoricalToolMajor(size_t pointerIndex, size_t historicalIndex) const {
484 return getHistoricalAxisValue(
485 AMOTION_EVENT_AXIS_TOOL_MAJOR, pointerIndex, historicalIndex);
488 inline float getHistoricalToolMinor(size_t pointerIndex, size_t historicalIndex) const {
489 return getHistoricalAxisValue(
490 AMOTION_EVENT_AXIS_TOOL_MINOR, pointerIndex, historicalIndex);
493 inline float getHistoricalOrientation(size_t pointerIndex, size_t historicalIndex) const {
494 return getHistoricalAxisValue(
495 AMOTION_EVENT_AXIS_ORIENTATION, pointerIndex, historicalIndex);
498 ssize_t findPointerIndex(int32_t pointerId) const;
515 const PointerProperties* pointerProperties,
516 const PointerCoords* pointerCoords);
518 void copyFrom(const MotionEvent* other, bool keepHistory);
522 const PointerCoords* pointerCoords);
524 void offsetLocation(float xOffset, float yOffset);
526 void scale(float scaleFactor);
528 // Apply 3x3 perspective matrix transformation.
529 // Matrix is in row-major form and compatible with SkMatrix.
530 void transform(const float matrix[9]);
532 #ifdef HAVE_ANDROID_OS
533 status_t readFromParcel(Parcel* parcel);
534 status_t writeToParcel(Parcel* parcel) const;
537 static bool isTouchEvent(int32_t source, int32_t action);
538 inline bool isTouchEvent() const {
539 return isTouchEvent(mSource, mAction);
542 // Low-level accessors.
543 inline const PointerProperties* getPointerProperties() const {
544 return mPointerProperties.array();
546 inline const nsecs_t* getSampleEventTimes() const { return mSampleEventTimes.array(); }
547 inline const PointerCoords* getSamplePointerCoords() const {
548 return mSamplePointerCoords.array();
556 int32_t mButtonState;
562 Vector<PointerProperties> mPointerProperties;
563 Vector<nsecs_t> mSampleEventTimes;
564 Vector<PointerCoords> mSamplePointerCoords;
568 * Input event factory.
570 class InputEventFactoryInterface {
572 virtual ~InputEventFactoryInterface() { }
575 InputEventFactoryInterface() { }
577 virtual KeyEvent* createKeyEvent() = 0;
578 virtual MotionEvent* createMotionEvent() = 0;
582 * A simple input event factory implementation that uses a single preallocated instance
583 * of each type of input event that are reused for each request.
585 class PreallocatedInputEventFactory : public InputEventFactoryInterface {
587 PreallocatedInputEventFactory() { }
588 virtual ~PreallocatedInputEventFactory() { }
590 virtual KeyEvent* createKeyEvent() { return & mKeyEvent; }
591 virtual MotionEvent* createMotionEvent() { return & mMotionEvent; }
595 MotionEvent mMotionEvent;
599 * An input event factory implementation that maintains a pool of input events.
601 class PooledInputEventFactory : public InputEventFactoryInterface {
603 PooledInputEventFactory(size_t maxPoolSize = 20);
604 virtual ~PooledInputEventFactory();
606 virtual KeyEvent* createKeyEvent();
607 virtual MotionEvent* createMotionEvent();
609 void recycle(InputEvent* event);
612 const size_t mMaxPoolSize;
614 Vector<KeyEvent*> mKeyEventPool;
615 Vector<MotionEvent*> mMotionEventPool;
618 } // namespace android
620 #endif // _LIBINPUT_INPUT_H