| /* |
| * Copyright (C) 2007 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. |
| */ |
| |
| package android.view; |
| |
| import android.graphics.Matrix; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.os.SystemClock; |
| |
| /** |
| * Object used to report movement (mouse, pen, finger, trackball) events. This |
| * class may hold either absolute or relative movements, depending on what |
| * it is being used for. |
| * <p> |
| * On pointing devices with source class {@link InputDevice#SOURCE_CLASS_POINTER} |
| * such as touch screens, the pointer coordinates specify absolute |
| * positions such as view X/Y coordinates. Each complete gesture is represented |
| * by a sequence of motion events with actions that describe pointer state transitions |
| * and movements. A gesture starts with a motion event with {@link #ACTION_DOWN} |
| * that provides the location of the first pointer down. As each additional |
| * pointer that goes down or up, the framework will generate a motion event with |
| * {@link #ACTION_POINTER_DOWN} or {@link #ACTION_POINTER_UP} accordingly. |
| * Pointer movements are described by motion events with {@link #ACTION_MOVE}. |
| * Finally, a gesture end either when the final pointer goes up as represented |
| * by a motion event with {@link #ACTION_UP} or when gesture is canceled |
| * with {@link #ACTION_CANCEL}. |
| * </p><p> |
| * On trackball devices with source class {@link InputDevice#SOURCE_CLASS_TRACKBALL}, |
| * the pointer coordinates specify relative movements as X/Y deltas. |
| * A trackball gesture consists of a sequence of movements described by motion |
| * events with {@link #ACTION_MOVE} interspersed with occasional {@link #ACTION_DOWN} |
| * or {@link #ACTION_UP} motion events when the trackball button is pressed or released. |
| * </p><p> |
| * On joystick devices with source class {@link InputDevice#SOURCE_CLASS_JOYSTICK}, |
| * the pointer coordinates specify the absolute position of the joystick axes. |
| * The joystick axis values are normalized to a range of -1.0 to 1.0 where 0.0 corresponds |
| * to the center position. More information about the set of available axes and the |
| * range of motion can be obtained using {@link InputDevice#getMotionRange}. |
| * </p><p> |
| * Motion events always report movements for all pointers at once. The number |
| * of pointers only ever changes by one as individual pointers go up and down, |
| * except when the gesture is canceled. |
| * </p><p> |
| * The order in which individual pointers appear within a motion event can change |
| * from one event to the next. Use the {@link #getPointerId(int)} method to obtain a |
| * pointer id to track pointers across motion events in a gesture. Then for |
| * successive motion events, use the {@link #findPointerIndex(int)} method to obtain |
| * the pointer index for a given pointer id in that motion event. |
| * </p><p> |
| * For efficiency, motion events with {@link #ACTION_MOVE} may batch together |
| * multiple movement samples within a single object. The most current |
| * pointer coordinates are available using {@link #getX(int)} and {@link #getY(int)}. |
| * Earlier coordinates within the batch are accessed using {@link #getHistoricalX(int, int)} |
| * and {@link #getHistoricalY(int, int)}. The coordinates are "historical" only |
| * insofar as they are older than the current coordinates in the batch; however, |
| * they are still distinct from any other coordinates reported in prior motion events. |
| * To process all coordinates in the batch in time order, first consume the historical |
| * coordinates then consume the current coordinates. |
| * </p><p> |
| * Example: Consuming all samples for all pointers in a motion event in time order. |
| * </p><p><pre><code> |
| * void printSamples(MotionEvent ev) { |
| * final int historySize = ev.getHistorySize(); |
| * final int pointerCount = ev.getPointerCount(); |
| * for (int h = 0; h < historySize; h++) { |
| * System.out.printf("At time %d:", ev.getHistoricalEventTime(h)); |
| * for (int p = 0; p < pointerCount; p++) { |
| * System.out.printf(" pointer %d: (%f,%f)", |
| * ev.getPointerId(p), ev.getHistoricalX(p, h), ev.getHistoricalY(p, h)); |
| * } |
| * } |
| * System.out.printf("At time %d:", ev.getEventTime()); |
| * for (int p = 0; p < pointerCount; p++) { |
| * System.out.printf(" pointer %d: (%f,%f)", |
| * ev.getPointerId(p), ev.getX(p), ev.getY(p)); |
| * } |
| * } |
| * </code></pre></p><p> |
| * In general, the framework cannot guarantee that the motion events it delivers |
| * to a view always constitute a complete motion sequences since some events may be dropped |
| * or modified by containing views before they are delivered. The view implementation |
| * should be prepared to handle {@link #ACTION_CANCEL} and should tolerate anomalous |
| * situations such as receiving a new {@link #ACTION_DOWN} without first having |
| * received an {@link #ACTION_UP} for the prior gesture. |
| * </p><p> |
| * Refer to {@link InputDevice} for more information about how different kinds of |
| * input devices and sources represent pointer coordinates. |
| * </p> |
| */ |
| public final class MotionEvent extends InputEvent implements Parcelable { |
| private static final long NS_PER_MS = 1000000; |
| private static final boolean TRACK_RECYCLED_LOCATION = false; |
| |
| /** |
| * Bit mask of the parts of the action code that are the action itself. |
| */ |
| public static final int ACTION_MASK = 0xff; |
| |
| /** |
| * Constant for {@link #getAction}: A pressed gesture has started, the |
| * motion contains the initial starting location. |
| */ |
| public static final int ACTION_DOWN = 0; |
| |
| /** |
| * Constant for {@link #getAction}: A pressed gesture has finished, the |
| * motion contains the final release location as well as any intermediate |
| * points since the last down or move event. |
| */ |
| public static final int ACTION_UP = 1; |
| |
| /** |
| * Constant for {@link #getAction}: A change has happened during a |
| * press gesture (between {@link #ACTION_DOWN} and {@link #ACTION_UP}). |
| * The motion contains the most recent point, as well as any intermediate |
| * points since the last down or move event. |
| */ |
| public static final int ACTION_MOVE = 2; |
| |
| /** |
| * Constant for {@link #getAction}: The current gesture has been aborted. |
| * You will not receive any more points in it. You should treat this as |
| * an up event, but not perform any action that you normally would. |
| */ |
| public static final int ACTION_CANCEL = 3; |
| |
| /** |
| * Constant for {@link #getAction}: A movement has happened outside of the |
| * normal bounds of the UI element. This does not provide a full gesture, |
| * but only the initial location of the movement/touch. |
| */ |
| public static final int ACTION_OUTSIDE = 4; |
| |
| /** |
| * A non-primary pointer has gone down. The bits in |
| * {@link #ACTION_POINTER_ID_MASK} indicate which pointer changed. |
| */ |
| public static final int ACTION_POINTER_DOWN = 5; |
| |
| /** |
| * A non-primary pointer has gone up. The bits in |
| * {@link #ACTION_POINTER_ID_MASK} indicate which pointer changed. |
| */ |
| public static final int ACTION_POINTER_UP = 6; |
| |
| /** |
| * Bits in the action code that represent a pointer index, used with |
| * {@link #ACTION_POINTER_DOWN} and {@link #ACTION_POINTER_UP}. Shifting |
| * down by {@link #ACTION_POINTER_INDEX_SHIFT} provides the actual pointer |
| * index where the data for the pointer going up or down can be found; you can |
| * get its identifier with {@link #getPointerId(int)} and the actual |
| * data with {@link #getX(int)} etc. |
| */ |
| public static final int ACTION_POINTER_INDEX_MASK = 0xff00; |
| |
| /** |
| * Bit shift for the action bits holding the pointer index as |
| * defined by {@link #ACTION_POINTER_INDEX_MASK}. |
| */ |
| public static final int ACTION_POINTER_INDEX_SHIFT = 8; |
| |
| /** |
| * @deprecated Use {@link #ACTION_POINTER_INDEX_MASK} to retrieve the |
| * data index associated with {@link #ACTION_POINTER_DOWN}. |
| */ |
| @Deprecated |
| public static final int ACTION_POINTER_1_DOWN = ACTION_POINTER_DOWN | 0x0000; |
| |
| /** |
| * @deprecated Use {@link #ACTION_POINTER_INDEX_MASK} to retrieve the |
| * data index associated with {@link #ACTION_POINTER_DOWN}. |
| */ |
| @Deprecated |
| public static final int ACTION_POINTER_2_DOWN = ACTION_POINTER_DOWN | 0x0100; |
| |
| /** |
| * @deprecated Use {@link #ACTION_POINTER_INDEX_MASK} to retrieve the |
| * data index associated with {@link #ACTION_POINTER_DOWN}. |
| */ |
| @Deprecated |
| public static final int ACTION_POINTER_3_DOWN = ACTION_POINTER_DOWN | 0x0200; |
| |
| /** |
| * @deprecated Use {@link #ACTION_POINTER_INDEX_MASK} to retrieve the |
| * data index associated with {@link #ACTION_POINTER_UP}. |
| */ |
| @Deprecated |
| public static final int ACTION_POINTER_1_UP = ACTION_POINTER_UP | 0x0000; |
| |
| /** |
| * @deprecated Use {@link #ACTION_POINTER_INDEX_MASK} to retrieve the |
| * data index associated with {@link #ACTION_POINTER_UP}. |
| */ |
| @Deprecated |
| public static final int ACTION_POINTER_2_UP = ACTION_POINTER_UP | 0x0100; |
| |
| /** |
| * @deprecated Use {@link #ACTION_POINTER_INDEX_MASK} to retrieve the |
| * data index associated with {@link #ACTION_POINTER_UP}. |
| */ |
| @Deprecated |
| public static final int ACTION_POINTER_3_UP = ACTION_POINTER_UP | 0x0200; |
| |
| /** |
| * @deprecated Renamed to {@link #ACTION_POINTER_INDEX_MASK} to match |
| * the actual data contained in these bits. |
| */ |
| @Deprecated |
| public static final int ACTION_POINTER_ID_MASK = 0xff00; |
| |
| /** |
| * @deprecated Renamed to {@link #ACTION_POINTER_INDEX_SHIFT} to match |
| * the actual data contained in these bits. |
| */ |
| @Deprecated |
| public static final int ACTION_POINTER_ID_SHIFT = 8; |
| |
| /** |
| * This flag indicates that the window that received this motion event is partly |
| * or wholly obscured by another visible window above it. This flag is set to true |
| * even if the event did not directly pass through the obscured area. |
| * A security sensitive application can check this flag to identify situations in which |
| * a malicious application may have covered up part of its content for the purpose |
| * of misleading the user or hijacking touches. An appropriate response might be |
| * to drop the suspect touches or to take additional precautions to confirm the user's |
| * actual intent. |
| */ |
| public static final int FLAG_WINDOW_IS_OBSCURED = 0x1; |
| |
| /** |
| * Flag indicating the motion event intersected the top edge of the screen. |
| */ |
| public static final int EDGE_TOP = 0x00000001; |
| |
| /** |
| * Flag indicating the motion event intersected the bottom edge of the screen. |
| */ |
| public static final int EDGE_BOTTOM = 0x00000002; |
| |
| /** |
| * Flag indicating the motion event intersected the left edge of the screen. |
| */ |
| public static final int EDGE_LEFT = 0x00000004; |
| |
| /** |
| * Flag indicating the motion event intersected the right edge of the screen. |
| */ |
| public static final int EDGE_RIGHT = 0x00000008; |
| |
| /** |
| * Constant used to identify the X axis of a motion event. |
| * |
| * The interpretation of the X axis varies by input source. |
| * It may represent the X position of the center of the touch contact area, |
| * a relative horizontal displacement of a trackball or joystick, or something else. |
| * |
| * @see #getX(int) |
| * @see #getHistoricalX(int, int) |
| * @see MotionEvent.PointerCoords#x |
| * @see InputDevice#getMotionRange |
| */ |
| public static final int AXIS_X = 0; |
| |
| /** |
| * Constant used to identify the Y axis of a motion event. |
| * |
| * The interpretation of the Y axis varies by input source. |
| * It may represent the Y position of the center of the touch contact area, |
| * a relative vertical displacement of a trackball or joystick, or something else. |
| * |
| * @see #getY(int) |
| * @see #getHistoricalY(int, int) |
| * @see MotionEvent.PointerCoords#y |
| * @see InputDevice#getMotionRange |
| */ |
| public static final int AXIS_Y = 1; |
| |
| /** |
| * Constant used to identify the Pressure axis of a motion event. |
| * |
| * The pressure axis specifies a normalized value that describes the approximate |
| * pressure applied to the device by a finger or other tool. |
| * The pressure generally ranges from 0 (no pressure at all) to 1 (normal pressure), |
| * although values higher than 1 may be generated depending on the calibration of |
| * the input device. |
| * |
| * @see #getPressure(int) |
| * @see #getHistoricalPressure(int, int) |
| * @see MotionEvent.PointerCoords#pressure |
| * @see InputDevice#getMotionRange |
| */ |
| public static final int AXIS_PRESSURE = 2; |
| |
| /** |
| * Constant used to identify the Size axis of a motion event. |
| * |
| * The size axis specifies a normalized value that describes the approximate size |
| * of the pointer touch area in relation to the maximum detectable size for the device. |
| * It represents some approximation of the area of the screen being |
| * pressed; the actual value in pixels corresponding to the |
| * touch is normalized with the device specific range of values |
| * and scaled to a value between 0 and 1. The value of size can be used to |
| * determine fat touch events. |
| * |
| * To obtain calibrated size information in terms of pixels, use |
| * {@link #AXIS_TOUCH_MAJOR} or {@link #AXIS_TOOL_MAJOR} instead. |
| * |
| * @see #getSize(int) |
| * @see #getHistoricalSize(int, int) |
| * @see MotionEvent.PointerCoords#size |
| * @see InputDevice#getMotionRange |
| */ |
| public static final int AXIS_SIZE = 3; |
| |
| /** |
| * Constant used to identify the TouchMajor axis of a motion event. |
| * |
| * The touch major axis specifies the length of the major axis of an ellipse that |
| * describes the touch area at the point of contact. |
| * If the device is a touch screen, the length is reported in pixels, otherwise it is |
| * reported in device-specific units. |
| * |
| * @see #getTouchMajor(int) |
| * @see #getHistoricalTouchMajor(int, int) |
| * @see MotionEvent.PointerCoords#touchMajor |
| * @see InputDevice#getMotionRange |
| */ |
| public static final int AXIS_TOUCH_MAJOR = 4; |
| |
| /** |
| * Constant used to identify the TouchMinor axis of a motion event. |
| * |
| * The touch major axis specifies the length of the minor axis of an ellipse that |
| * describes the touch area at the point of contact. |
| * If the device is a touch screen, the length is reported in pixels, otherwise it is |
| * reported in device-specific units. |
| * |
| * @see #getTouchMinor(int) |
| * @see #getHistoricalTouchMinor(int, int) |
| * @see MotionEvent.PointerCoords#touchMinor |
| * @see InputDevice#getMotionRange |
| */ |
| public static final int AXIS_TOUCH_MINOR = 5; |
| |
| /** |
| * Constant used to identify the ToolMajor axis of a motion event. |
| * |
| * The tool major axis specifies the length of the major axis of an ellipse that |
| * describes the size of the approaching tool. |
| * The tool area represents the estimated size of the finger or pen that is |
| * touching the device independent of its actual touch area at the point of contact. |
| * If the device is a touch screen, the length is reported in pixels, otherwise it is |
| * reported in device-specific units. |
| * |
| * @see #getToolMajor(int) |
| * @see #getHistoricalToolMajor(int, int) |
| * @see MotionEvent.PointerCoords#toolMajor |
| * @see InputDevice#getMotionRange |
| */ |
| public static final int AXIS_TOOL_MAJOR = 6; |
| |
| /** |
| * Constant used to identify the ToolMinor axis of a motion event. |
| * |
| * The tool minor axis specifies the length of the major axis of an ellipse that |
| * describes the size of the approaching tool. |
| * The tool area represents the estimated size of the finger or pen that is |
| * touching the device independent of its actual touch area at the point of contact. |
| * If the device is a touch screen, the length is reported in pixels, otherwise it is |
| * reported in device-specific units. |
| * |
| * @see #getToolMinor(int) |
| * @see #getHistoricalToolMinor(int, int) |
| * @see MotionEvent.PointerCoords#toolMinor |
| * @see InputDevice#getMotionRange |
| */ |
| public static final int AXIS_TOOL_MINOR = 7; |
| |
| /** |
| * Constant used to identify the Orientation axis of a motion event. |
| * |
| * The orientation axis specifies the orientation of the touch area and tool area in |
| * radians clockwise from vertical relative to the vertical plane of the device. |
| * An angle of 0 degrees indicates that the major axis of contact is oriented |
| * upwards, is perfectly circular or is of unknown orientation. A positive angle |
| * indicates that the major axis of contact is oriented to the right. A negative angle |
| * indicates that the major axis of contact is oriented to the left. |
| * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians |
| * (finger pointing fully right). |
| * |
| * @see #getOrientation(int) |
| * @see #getHistoricalOrientation(int, int) |
| * @see MotionEvent.PointerCoords#orientation |
| * @see InputDevice#getMotionRange |
| */ |
| public static final int AXIS_ORIENTATION = 8; |
| |
| // Private value for history pos that obtains the current sample. |
| private static final int HISTORY_CURRENT = -0x80000000; |
| |
| private static final int MAX_RECYCLED = 10; |
| private static final Object gRecyclerLock = new Object(); |
| private static int gRecyclerUsed; |
| private static MotionEvent gRecyclerTop; |
| |
| // Shared temporary objects used when translating coordinates supplied by |
| // the caller into single element PointerCoords and pointer id arrays. |
| // Must lock gTmpPointerCoords prior to use. |
| private static final PointerCoords[] gTmpPointerCoords = |
| new PointerCoords[] { new PointerCoords() }; |
| private static final int[] gTmpPointerIds = new int[] { 0 /*always 0*/ }; |
| |
| // Pointer to the native MotionEvent object that contains the actual data. |
| private int mNativePtr; |
| |
| private MotionEvent mNext; |
| private RuntimeException mRecycledLocation; |
| private boolean mRecycled; |
| |
| private static native int nativeInitialize(int nativePtr, |
| int deviceId, int source, int action, int flags, int edgeFlags, int metaState, |
| float xOffset, float yOffset, float xPrecision, float yPrecision, |
| long downTimeNanos, long eventTimeNanos, |
| int pointerCount, int[] pointerIds, PointerCoords[] pointerCoords); |
| private static native int nativeCopy(int destNativePtr, int sourceNativePtr, |
| boolean keepHistory); |
| private static native void nativeDispose(int nativePtr); |
| private static native void nativeAddBatch(int nativePtr, long eventTimeNanos, |
| PointerCoords[] pointerCoords, int metaState); |
| |
| private static native int nativeGetDeviceId(int nativePtr); |
| private static native int nativeGetSource(int nativePtr); |
| private static native int nativeSetSource(int nativePtr, int source); |
| private static native int nativeGetAction(int nativePtr); |
| private static native void nativeSetAction(int nativePtr, int action); |
| private static native int nativeGetFlags(int nativePtr); |
| private static native int nativeGetEdgeFlags(int nativePtr); |
| private static native void nativeSetEdgeFlags(int nativePtr, int action); |
| private static native int nativeGetMetaState(int nativePtr); |
| private static native void nativeOffsetLocation(int nativePtr, float deltaX, float deltaY); |
| private static native float nativeGetXPrecision(int nativePtr); |
| private static native float nativeGetYPrecision(int nativePtr); |
| private static native long nativeGetDownTimeNanos(int nativePtr); |
| |
| private static native int nativeGetPointerCount(int nativePtr); |
| private static native int nativeGetPointerId(int nativePtr, int pointerIndex); |
| private static native int nativeFindPointerIndex(int nativePtr, int pointerId); |
| |
| private static native int nativeGetHistorySize(int nativePtr); |
| private static native long nativeGetEventTimeNanos(int nativePtr, int historyPos); |
| private static native float nativeGetRawAxisValue(int nativePtr, |
| int axis, int pointerIndex, int historyPos); |
| private static native float nativeGetAxisValue(int nativePtr, |
| int axis, int pointerIndex, int historyPos); |
| private static native void nativeGetPointerCoords(int nativePtr, |
| int pointerIndex, int historyPos, PointerCoords outPointerCoords); |
| |
| private static native void nativeScale(int nativePtr, float scale); |
| private static native void nativeTransform(int nativePtr, Matrix matrix); |
| |
| private static native int nativeReadFromParcel(int nativePtr, Parcel parcel); |
| private static native void nativeWriteToParcel(int nativePtr, Parcel parcel); |
| |
| private MotionEvent() { |
| } |
| |
| @Override |
| protected void finalize() throws Throwable { |
| try { |
| if (mNativePtr != 0) { |
| nativeDispose(mNativePtr); |
| mNativePtr = 0; |
| } |
| } finally { |
| super.finalize(); |
| } |
| } |
| |
| static private MotionEvent obtain() { |
| final MotionEvent ev; |
| synchronized (gRecyclerLock) { |
| ev = gRecyclerTop; |
| if (ev == null) { |
| return new MotionEvent(); |
| } |
| gRecyclerTop = ev.mNext; |
| gRecyclerUsed -= 1; |
| } |
| ev.mRecycledLocation = null; |
| ev.mRecycled = false; |
| ev.mNext = null; |
| return ev; |
| } |
| |
| /** |
| * Create a new MotionEvent, filling in all of the basic values that |
| * define the motion. |
| * |
| * @param downTime The time (in ms) when the user originally pressed down to start |
| * a stream of position events. This must be obtained from {@link SystemClock#uptimeMillis()}. |
| * @param eventTime The the time (in ms) when this specific event was generated. This |
| * must be obtained from {@link SystemClock#uptimeMillis()}. |
| * @param action The kind of action being performed -- one of either |
| * {@link #ACTION_DOWN}, {@link #ACTION_MOVE}, {@link #ACTION_UP}, or |
| * {@link #ACTION_CANCEL}. |
| * @param pointers The number of points that will be in this event. |
| * @param pointerIds An array of <em>pointers</em> values providing |
| * an identifier for each pointer. |
| * @param pointerCoords An array of <em>pointers</em> values providing |
| * a {@link PointerCoords} coordinate object for each pointer. |
| * @param metaState The state of any meta / modifier keys that were in effect when |
| * the event was generated. |
| * @param xPrecision The precision of the X coordinate being reported. |
| * @param yPrecision The precision of the Y coordinate being reported. |
| * @param deviceId The id for the device that this event came from. An id of |
| * zero indicates that the event didn't come from a physical device; other |
| * numbers are arbitrary and you shouldn't depend on the values. |
| * @param edgeFlags A bitfield indicating which edges, if any, were touched by this |
| * MotionEvent. |
| * @param source The source of this event. |
| * @param flags The motion event flags. |
| */ |
| static public MotionEvent obtain(long downTime, long eventTime, |
| int action, int pointers, int[] pointerIds, PointerCoords[] pointerCoords, |
| int metaState, float xPrecision, float yPrecision, int deviceId, |
| int edgeFlags, int source, int flags) { |
| MotionEvent ev = obtain(); |
| ev.mNativePtr = nativeInitialize(ev.mNativePtr, |
| deviceId, source, action, flags, edgeFlags, metaState, |
| 0, 0, xPrecision, yPrecision, |
| downTime * NS_PER_MS, eventTime * NS_PER_MS, |
| pointers, pointerIds, pointerCoords); |
| return ev; |
| } |
| |
| /** |
| * Create a new MotionEvent, filling in all of the basic values that |
| * define the motion. |
| * |
| * @param downTime The time (in ms) when the user originally pressed down to start |
| * a stream of position events. This must be obtained from {@link SystemClock#uptimeMillis()}. |
| * @param eventTime The the time (in ms) when this specific event was generated. This |
| * must be obtained from {@link SystemClock#uptimeMillis()}. |
| * @param action The kind of action being performed -- one of either |
| * {@link #ACTION_DOWN}, {@link #ACTION_MOVE}, {@link #ACTION_UP}, or |
| * {@link #ACTION_CANCEL}. |
| * @param x The X coordinate of this event. |
| * @param y The Y coordinate of this event. |
| * @param pressure The current pressure of this event. The pressure generally |
| * ranges from 0 (no pressure at all) to 1 (normal pressure), however |
| * values higher than 1 may be generated depending on the calibration of |
| * the input device. |
| * @param size A scaled value of the approximate size of the area being pressed when |
| * touched with the finger. The actual value in pixels corresponding to the finger |
| * touch is normalized with a device specific range of values |
| * and scaled to a value between 0 and 1. |
| * @param metaState The state of any meta / modifier keys that were in effect when |
| * the event was generated. |
| * @param xPrecision The precision of the X coordinate being reported. |
| * @param yPrecision The precision of the Y coordinate being reported. |
| * @param deviceId The id for the device that this event came from. An id of |
| * zero indicates that the event didn't come from a physical device; other |
| * numbers are arbitrary and you shouldn't depend on the values. |
| * @param edgeFlags A bitfield indicating which edges, if any, were touched by this |
| * MotionEvent. |
| */ |
| static public MotionEvent obtain(long downTime, long eventTime, int action, |
| float x, float y, float pressure, float size, int metaState, |
| float xPrecision, float yPrecision, int deviceId, int edgeFlags) { |
| synchronized (gTmpPointerCoords) { |
| final PointerCoords pc = gTmpPointerCoords[0]; |
| pc.clear(); |
| pc.x = x; |
| pc.y = y; |
| pc.pressure = pressure; |
| pc.size = size; |
| |
| MotionEvent ev = obtain(); |
| ev.mNativePtr = nativeInitialize(ev.mNativePtr, |
| deviceId, InputDevice.SOURCE_UNKNOWN, action, 0, edgeFlags, metaState, |
| 0, 0, xPrecision, yPrecision, |
| downTime * NS_PER_MS, eventTime * NS_PER_MS, |
| 1, gTmpPointerIds, gTmpPointerCoords); |
| return ev; |
| } |
| } |
| |
| /** |
| * Create a new MotionEvent, filling in all of the basic values that |
| * define the motion. |
| * |
| * @param downTime The time (in ms) when the user originally pressed down to start |
| * a stream of position events. This must be obtained from {@link SystemClock#uptimeMillis()}. |
| * @param eventTime The the time (in ms) when this specific event was generated. This |
| * must be obtained from {@link SystemClock#uptimeMillis()}. |
| * @param action The kind of action being performed -- one of either |
| * {@link #ACTION_DOWN}, {@link #ACTION_MOVE}, {@link #ACTION_UP}, or |
| * {@link #ACTION_CANCEL}. |
| * @param pointers The number of pointers that are active in this event. |
| * @param x The X coordinate of this event. |
| * @param y The Y coordinate of this event. |
| * @param pressure The current pressure of this event. The pressure generally |
| * ranges from 0 (no pressure at all) to 1 (normal pressure), however |
| * values higher than 1 may be generated depending on the calibration of |
| * the input device. |
| * @param size A scaled value of the approximate size of the area being pressed when |
| * touched with the finger. The actual value in pixels corresponding to the finger |
| * touch is normalized with a device specific range of values |
| * and scaled to a value between 0 and 1. |
| * @param metaState The state of any meta / modifier keys that were in effect when |
| * the event was generated. |
| * @param xPrecision The precision of the X coordinate being reported. |
| * @param yPrecision The precision of the Y coordinate being reported. |
| * @param deviceId The id for the device that this event came from. An id of |
| * zero indicates that the event didn't come from a physical device; other |
| * numbers are arbitrary and you shouldn't depend on the values. |
| * @param edgeFlags A bitfield indicating which edges, if any, were touched by this |
| * MotionEvent. |
| * |
| * @deprecated Use {@link #obtain(long, long, int, float, float, float, float, int, float, float, int, int)} |
| * instead. |
| */ |
| @Deprecated |
| static public MotionEvent obtain(long downTime, long eventTime, int action, |
| int pointers, float x, float y, float pressure, float size, int metaState, |
| float xPrecision, float yPrecision, int deviceId, int edgeFlags) { |
| return obtain(downTime, eventTime, action, x, y, pressure, size, |
| metaState, xPrecision, yPrecision, deviceId, edgeFlags); |
| } |
| |
| /** |
| * Create a new MotionEvent, filling in a subset of the basic motion |
| * values. Those not specified here are: device id (always 0), pressure |
| * and size (always 1), x and y precision (always 1), and edgeFlags (always 0). |
| * |
| * @param downTime The time (in ms) when the user originally pressed down to start |
| * a stream of position events. This must be obtained from {@link SystemClock#uptimeMillis()}. |
| * @param eventTime The the time (in ms) when this specific event was generated. This |
| * must be obtained from {@link SystemClock#uptimeMillis()}. |
| * @param action The kind of action being performed -- one of either |
| * {@link #ACTION_DOWN}, {@link #ACTION_MOVE}, {@link #ACTION_UP}, or |
| * {@link #ACTION_CANCEL}. |
| * @param x The X coordinate of this event. |
| * @param y The Y coordinate of this event. |
| * @param metaState The state of any meta / modifier keys that were in effect when |
| * the event was generated. |
| */ |
| static public MotionEvent obtain(long downTime, long eventTime, int action, |
| float x, float y, int metaState) { |
| return obtain(downTime, eventTime, action, x, y, 1.0f, 1.0f, |
| metaState, 1.0f, 1.0f, 0, 0); |
| } |
| |
| /** |
| * Create a new MotionEvent, copying from an existing one. |
| */ |
| static public MotionEvent obtain(MotionEvent other) { |
| if (other == null) { |
| throw new IllegalArgumentException("other motion event must not be null"); |
| } |
| |
| MotionEvent ev = obtain(); |
| ev.mNativePtr = nativeCopy(ev.mNativePtr, other.mNativePtr, true /*keepHistory*/); |
| return ev; |
| } |
| |
| /** |
| * Create a new MotionEvent, copying from an existing one, but not including |
| * any historical point information. |
| */ |
| static public MotionEvent obtainNoHistory(MotionEvent other) { |
| if (other == null) { |
| throw new IllegalArgumentException("other motion event must not be null"); |
| } |
| |
| MotionEvent ev = obtain(); |
| ev.mNativePtr = nativeCopy(ev.mNativePtr, other.mNativePtr, false /*keepHistory*/); |
| return ev; |
| } |
| |
| /** |
| * Recycle the MotionEvent, to be re-used by a later caller. After calling |
| * this function you must not ever touch the event again. |
| */ |
| public final void recycle() { |
| // Ensure recycle is only called once! |
| if (TRACK_RECYCLED_LOCATION) { |
| if (mRecycledLocation != null) { |
| throw new RuntimeException(toString() + " recycled twice!", mRecycledLocation); |
| } |
| mRecycledLocation = new RuntimeException("Last recycled here"); |
| //Log.w("MotionEvent", "Recycling event " + this, mRecycledLocation); |
| } else { |
| if (mRecycled) { |
| throw new RuntimeException(toString() + " recycled twice!"); |
| } |
| mRecycled = true; |
| } |
| |
| synchronized (gRecyclerLock) { |
| if (gRecyclerUsed < MAX_RECYCLED) { |
| gRecyclerUsed++; |
| mNext = gRecyclerTop; |
| gRecyclerTop = this; |
| } |
| } |
| } |
| |
| /** |
| * Scales down the coordination of this event by the given scale. |
| * |
| * @hide |
| */ |
| public final void scale(float scale) { |
| nativeScale(mNativePtr, scale); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public final int getDeviceId() { |
| return nativeGetDeviceId(mNativePtr); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public final int getSource() { |
| return nativeGetSource(mNativePtr); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public final void setSource(int source) { |
| nativeSetSource(mNativePtr, source); |
| } |
| |
| /** |
| * Return the kind of action being performed -- one of either |
| * {@link #ACTION_DOWN}, {@link #ACTION_MOVE}, {@link #ACTION_UP}, or |
| * {@link #ACTION_CANCEL}. Consider using {@link #getActionMasked} |
| * and {@link #getActionIndex} to retrieve the separate masked action |
| * and pointer index. |
| */ |
| public final int getAction() { |
| return nativeGetAction(mNativePtr); |
| } |
| |
| /** |
| * Return the masked action being performed, without pointer index |
| * information. May be any of the actions: {@link #ACTION_DOWN}, |
| * {@link #ACTION_MOVE}, {@link #ACTION_UP}, {@link #ACTION_CANCEL}, |
| * {@link #ACTION_POINTER_DOWN}, or {@link #ACTION_POINTER_UP}. |
| * Use {@link #getActionIndex} to return the index associated with |
| * pointer actions. |
| */ |
| public final int getActionMasked() { |
| return nativeGetAction(mNativePtr) & ACTION_MASK; |
| } |
| |
| /** |
| * For {@link #ACTION_POINTER_DOWN} or {@link #ACTION_POINTER_UP} |
| * as returned by {@link #getActionMasked}, this returns the associated |
| * pointer index. The index may be used with {@link #getPointerId(int)}, |
| * {@link #getX(int)}, {@link #getY(int)}, {@link #getPressure(int)}, |
| * and {@link #getSize(int)} to get information about the pointer that has |
| * gone down or up. |
| */ |
| public final int getActionIndex() { |
| return (nativeGetAction(mNativePtr) & ACTION_POINTER_INDEX_MASK) |
| >> ACTION_POINTER_INDEX_SHIFT; |
| } |
| |
| /** |
| * Gets the motion event flags. |
| * |
| * @see #FLAG_WINDOW_IS_OBSCURED |
| */ |
| public final int getFlags() { |
| return nativeGetFlags(mNativePtr); |
| } |
| |
| /** |
| * Returns the time (in ms) when the user originally pressed down to start |
| * a stream of position events. |
| */ |
| public final long getDownTime() { |
| return nativeGetDownTimeNanos(mNativePtr) / NS_PER_MS; |
| } |
| |
| /** |
| * Returns the time (in ms) when this specific event was generated. |
| */ |
| public final long getEventTime() { |
| return nativeGetEventTimeNanos(mNativePtr, HISTORY_CURRENT) / NS_PER_MS; |
| } |
| |
| /** |
| * Returns the time (in ns) when this specific event was generated. |
| * The value is in nanosecond precision but it may not have nanosecond accuracy. |
| * |
| * @hide |
| */ |
| public final long getEventTimeNano() { |
| return nativeGetEventTimeNanos(mNativePtr, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getX(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @see #AXIS_X |
| */ |
| public final float getX() { |
| return nativeGetAxisValue(mNativePtr, AXIS_X, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getY(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @see #AXIS_Y |
| */ |
| public final float getY() { |
| return nativeGetAxisValue(mNativePtr, AXIS_Y, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getPressure(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @see #AXIS_PRESSURE |
| */ |
| public final float getPressure() { |
| return nativeGetAxisValue(mNativePtr, AXIS_PRESSURE, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getSize(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @see #AXIS_SIZE |
| */ |
| public final float getSize() { |
| return nativeGetAxisValue(mNativePtr, AXIS_SIZE, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getTouchMajor(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @see #AXIS_TOUCH_MAJOR |
| */ |
| public final float getTouchMajor() { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOUCH_MAJOR, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getTouchMinor(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @see #AXIS_TOUCH_MINOR |
| */ |
| public final float getTouchMinor() { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOUCH_MINOR, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getToolMajor(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @see #AXIS_TOOL_MAJOR |
| */ |
| public final float getToolMajor() { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOOL_MAJOR, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getToolMinor(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @see #AXIS_TOOL_MINOR |
| */ |
| public final float getToolMinor() { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOOL_MINOR, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getOrientation(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @see #AXIS_ORIENTATION |
| */ |
| public final float getOrientation() { |
| return nativeGetAxisValue(mNativePtr, AXIS_ORIENTATION, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * {@link #getAxisValue(int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param axis The axis identifier for the axis value to retrieve. |
| * |
| * @see #AXIS_X |
| * @see #AXIS_Y |
| */ |
| public final float getAxisValue(int axis) { |
| return nativeGetAxisValue(mNativePtr, axis, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * The number of pointers of data contained in this event. Always |
| * >= 1. |
| */ |
| public final int getPointerCount() { |
| return nativeGetPointerCount(mNativePtr); |
| } |
| |
| /** |
| * Return the pointer identifier associated with a particular pointer |
| * data index is this event. The identifier tells you the actual pointer |
| * number associated with the data, accounting for individual pointers |
| * going up and down since the start of the current gesture. |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| */ |
| public final int getPointerId(int pointerIndex) { |
| return nativeGetPointerId(mNativePtr, pointerIndex); |
| } |
| |
| /** |
| * Given a pointer identifier, find the index of its data in the event. |
| * |
| * @param pointerId The identifier of the pointer to be found. |
| * @return Returns either the index of the pointer (for use with |
| * {@link #getX(int)} et al.), or -1 if there is no data available for |
| * that pointer identifier. |
| */ |
| public final int findPointerIndex(int pointerId) { |
| return nativeFindPointerIndex(mNativePtr, pointerId); |
| } |
| |
| /** |
| * Returns the X coordinate of this event for the given pointer |
| * <em>index</em> (use {@link #getPointerId(int)} to find the pointer |
| * identifier for this index). |
| * Whole numbers are pixels; the |
| * value may have a fraction for input devices that are sub-pixel precise. |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * |
| * @see #AXIS_X |
| */ |
| public final float getX(int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, AXIS_X, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns the Y coordinate of this event for the given pointer |
| * <em>index</em> (use {@link #getPointerId(int)} to find the pointer |
| * identifier for this index). |
| * Whole numbers are pixels; the |
| * value may have a fraction for input devices that are sub-pixel precise. |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * |
| * @see #AXIS_Y |
| */ |
| public final float getY(int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, AXIS_Y, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns the current pressure of this event for the given pointer |
| * <em>index</em> (use {@link #getPointerId(int)} to find the pointer |
| * identifier for this index). |
| * The pressure generally |
| * ranges from 0 (no pressure at all) to 1 (normal pressure), however |
| * values higher than 1 may be generated depending on the calibration of |
| * the input device. |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * |
| * @see #AXIS_PRESSURE |
| */ |
| public final float getPressure(int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, AXIS_PRESSURE, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns a scaled value of the approximate size for the given pointer |
| * <em>index</em> (use {@link #getPointerId(int)} to find the pointer |
| * identifier for this index). |
| * This represents some approximation of the area of the screen being |
| * pressed; the actual value in pixels corresponding to the |
| * touch is normalized with the device specific range of values |
| * and scaled to a value between 0 and 1. The value of size can be used to |
| * determine fat touch events. |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * |
| * @see #AXIS_SIZE |
| */ |
| public final float getSize(int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, AXIS_SIZE, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns the length of the major axis of an ellipse that describes the touch |
| * area at the point of contact for the given pointer |
| * <em>index</em> (use {@link #getPointerId(int)} to find the pointer |
| * identifier for this index). |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * |
| * @see #AXIS_TOUCH_MAJOR |
| */ |
| public final float getTouchMajor(int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOUCH_MAJOR, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns the length of the minor axis of an ellipse that describes the touch |
| * area at the point of contact for the given pointer |
| * <em>index</em> (use {@link #getPointerId(int)} to find the pointer |
| * identifier for this index). |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * |
| * @see #AXIS_TOUCH_MINOR |
| */ |
| public final float getTouchMinor(int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOUCH_MINOR, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns the length of the major axis of an ellipse that describes the size of |
| * the approaching tool for the given pointer |
| * <em>index</em> (use {@link #getPointerId(int)} to find the pointer |
| * identifier for this index). |
| * The tool area represents the estimated size of the finger or pen that is |
| * touching the device independent of its actual touch area at the point of contact. |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * |
| * @see #AXIS_TOOL_MAJOR |
| */ |
| public final float getToolMajor(int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOOL_MAJOR, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns the length of the minor axis of an ellipse that describes the size of |
| * the approaching tool for the given pointer |
| * <em>index</em> (use {@link #getPointerId(int)} to find the pointer |
| * identifier for this index). |
| * The tool area represents the estimated size of the finger or pen that is |
| * touching the device independent of its actual touch area at the point of contact. |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * |
| * @see #AXIS_TOOL_MINOR |
| */ |
| public final float getToolMinor(int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOOL_MINOR, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns the orientation of the touch area and tool area in radians clockwise from vertical |
| * for the given pointer <em>index</em> (use {@link #getPointerId(int)} to find the pointer |
| * identifier for this index). |
| * An angle of 0 degrees indicates that the major axis of contact is oriented |
| * upwards, is perfectly circular or is of unknown orientation. A positive angle |
| * indicates that the major axis of contact is oriented to the right. A negative angle |
| * indicates that the major axis of contact is oriented to the left. |
| * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians |
| * (finger pointing fully right). |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * |
| * @see #AXIS_ORIENTATION |
| */ |
| public final float getOrientation(int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, AXIS_ORIENTATION, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns the value of the requested axis for the given pointer <em>index</em> |
| * (use {@link #getPointerId(int)} to find the pointer identifier for this index). |
| * |
| * @param axis The axis identifier for the axis value to retrieve. |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @return The value of the axis, or 0 if the axis is not available. |
| * |
| * @see #AXIS_X |
| * @see #AXIS_Y |
| */ |
| public final float getAxisValue(int axis, int pointerIndex) { |
| return nativeGetAxisValue(mNativePtr, axis, pointerIndex, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Populates a {@link PointerCoords} object with pointer coordinate data for |
| * the specified pointer index. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param outPointerCoords The pointer coordinate object to populate. |
| * |
| * @see PointerCoords |
| */ |
| public final void getPointerCoords(int pointerIndex, PointerCoords outPointerCoords) { |
| nativeGetPointerCoords(mNativePtr, pointerIndex, HISTORY_CURRENT, outPointerCoords); |
| } |
| |
| /** |
| * Returns the state of any meta / modifier keys that were in effect when |
| * the event was generated. This is the same values as those |
| * returned by {@link KeyEvent#getMetaState() KeyEvent.getMetaState}. |
| * |
| * @return an integer in which each bit set to 1 represents a pressed |
| * meta key |
| * |
| * @see KeyEvent#getMetaState() |
| */ |
| public final int getMetaState() { |
| return nativeGetMetaState(mNativePtr); |
| } |
| |
| /** |
| * Returns the original raw X coordinate of this event. For touch |
| * events on the screen, this is the original location of the event |
| * on the screen, before it had been adjusted for the containing window |
| * and views. |
| * |
| * @see getX() |
| * @see #AXIS_X |
| */ |
| public final float getRawX() { |
| return nativeGetRawAxisValue(mNativePtr, AXIS_X, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Returns the original raw Y coordinate of this event. For touch |
| * events on the screen, this is the original location of the event |
| * on the screen, before it had been adjusted for the containing window |
| * and views. |
| * |
| * @see getY() |
| * @see #AXIS_Y |
| */ |
| public final float getRawY() { |
| return nativeGetRawAxisValue(mNativePtr, AXIS_Y, 0, HISTORY_CURRENT); |
| } |
| |
| /** |
| * Return the precision of the X coordinates being reported. You can |
| * multiply this number with {@link #getX} to find the actual hardware |
| * value of the X coordinate. |
| * @return Returns the precision of X coordinates being reported. |
| * |
| * @see #AXIS_X |
| */ |
| public final float getXPrecision() { |
| return nativeGetXPrecision(mNativePtr); |
| } |
| |
| /** |
| * Return the precision of the Y coordinates being reported. You can |
| * multiply this number with {@link #getY} to find the actual hardware |
| * value of the Y coordinate. |
| * @return Returns the precision of Y coordinates being reported. |
| * |
| * @see #AXIS_Y |
| */ |
| public final float getYPrecision() { |
| return nativeGetYPrecision(mNativePtr); |
| } |
| |
| /** |
| * Returns the number of historical points in this event. These are |
| * movements that have occurred between this event and the previous event. |
| * This only applies to ACTION_MOVE events -- all other actions will have |
| * a size of 0. |
| * |
| * @return Returns the number of historical points in the event. |
| */ |
| public final int getHistorySize() { |
| return nativeGetHistorySize(mNativePtr); |
| } |
| |
| /** |
| * Returns the time that a historical movement occurred between this event |
| * and the previous event. Only applies to ACTION_MOVE events. |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getEventTime |
| */ |
| public final long getHistoricalEventTime(int pos) { |
| return nativeGetEventTimeNanos(mNativePtr, pos) / NS_PER_MS; |
| } |
| |
| /** |
| * {@link #getHistoricalX(int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getX() |
| * @see #AXIS_X |
| */ |
| public final float getHistoricalX(int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_X, 0, pos); |
| } |
| |
| /** |
| * {@link #getHistoricalY(int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getY() |
| * @see #AXIS_Y |
| */ |
| public final float getHistoricalY(int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_Y, 0, pos); |
| } |
| |
| /** |
| * {@link #getHistoricalPressure(int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getPressure() |
| * @see #AXIS_PRESSURE |
| */ |
| public final float getHistoricalPressure(int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_PRESSURE, 0, pos); |
| } |
| |
| /** |
| * {@link #getHistoricalSize(int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getSize() |
| * @see #AXIS_SIZE |
| */ |
| public final float getHistoricalSize(int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_SIZE, 0, pos); |
| } |
| |
| /** |
| * {@link #getHistoricalTouchMajor(int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getTouchMajor() |
| * @see #AXIS_TOUCH_MAJOR |
| */ |
| public final float getHistoricalTouchMajor(int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOUCH_MAJOR, 0, pos); |
| } |
| |
| /** |
| * {@link #getHistoricalTouchMinor(int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getTouchMinor() |
| * @see #AXIS_TOUCH_MINOR |
| */ |
| public final float getHistoricalTouchMinor(int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOUCH_MINOR, 0, pos); |
| } |
| |
| /** |
| * {@link #getHistoricalToolMajor(int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getToolMajor() |
| * @see #AXIS_TOOL_MAJOR |
| */ |
| public final float getHistoricalToolMajor(int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOOL_MAJOR, 0, pos); |
| } |
| |
| /** |
| * {@link #getHistoricalToolMinor(int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getToolMinor() |
| * @see #AXIS_TOOL_MINOR |
| */ |
| public final float getHistoricalToolMinor(int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOOL_MINOR, 0, pos); |
| } |
| |
| /** |
| * {@link #getHistoricalOrientation(int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getOrientation() |
| * @see #AXIS_ORIENTATION |
| */ |
| public final float getHistoricalOrientation(int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_ORIENTATION, 0, pos); |
| } |
| |
| /** |
| * {@link #getHistoricalAxisValue(int, int, int)} for the first pointer index (may be an |
| * arbitrary pointer identifier). |
| * |
| * @param axis The axis identifier for the axis value to retrieve. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getAxisValue(int) |
| * @see #AXIS_X |
| * @see #AXIS_Y |
| */ |
| public final float getHistoricalAxisValue(int axis, int pos) { |
| return nativeGetAxisValue(mNativePtr, axis, 0, pos); |
| } |
| |
| /** |
| * Returns a historical X coordinate, as per {@link #getX(int)}, that |
| * occurred between this event and the previous event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getX(int) |
| * @see #AXIS_X |
| */ |
| public final float getHistoricalX(int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_X, pointerIndex, pos); |
| } |
| |
| /** |
| * Returns a historical Y coordinate, as per {@link #getY(int)}, that |
| * occurred between this event and the previous event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getY(int) |
| * @see #AXIS_Y |
| */ |
| public final float getHistoricalY(int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_Y, pointerIndex, pos); |
| } |
| |
| /** |
| * Returns a historical pressure coordinate, as per {@link #getPressure(int)}, |
| * that occurred between this event and the previous event for the given |
| * pointer. Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getPressure(int) |
| * @see #AXIS_PRESSURE |
| */ |
| public final float getHistoricalPressure(int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_PRESSURE, pointerIndex, pos); |
| } |
| |
| /** |
| * Returns a historical size coordinate, as per {@link #getSize(int)}, that |
| * occurred between this event and the previous event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getSize(int) |
| * @see #AXIS_SIZE |
| */ |
| public final float getHistoricalSize(int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_SIZE, pointerIndex, pos); |
| } |
| |
| /** |
| * Returns a historical touch major axis coordinate, as per {@link #getTouchMajor(int)}, that |
| * occurred between this event and the previous event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getTouchMajor(int) |
| * @see #AXIS_TOUCH_MAJOR |
| */ |
| public final float getHistoricalTouchMajor(int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOUCH_MAJOR, pointerIndex, pos); |
| } |
| |
| /** |
| * Returns a historical touch minor axis coordinate, as per {@link #getTouchMinor(int)}, that |
| * occurred between this event and the previous event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getTouchMinor(int) |
| * @see #AXIS_TOUCH_MINOR |
| */ |
| public final float getHistoricalTouchMinor(int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOUCH_MINOR, pointerIndex, pos); |
| } |
| |
| /** |
| * Returns a historical tool major axis coordinate, as per {@link #getToolMajor(int)}, that |
| * occurred between this event and the previous event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getToolMajor(int) |
| * @see #AXIS_TOOL_MAJOR |
| */ |
| public final float getHistoricalToolMajor(int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOOL_MAJOR, pointerIndex, pos); |
| } |
| |
| /** |
| * Returns a historical tool minor axis coordinate, as per {@link #getToolMinor(int)}, that |
| * occurred between this event and the previous event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getToolMinor(int) |
| * @see #AXIS_TOOL_MINOR |
| */ |
| public final float getHistoricalToolMinor(int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_TOOL_MINOR, pointerIndex, pos); |
| } |
| |
| /** |
| * Returns a historical orientation coordinate, as per {@link #getOrientation(int)}, that |
| * occurred between this event and the previous event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * |
| * @see #getHistorySize |
| * @see #getOrientation(int) |
| * @see #AXIS_ORIENTATION |
| */ |
| public final float getHistoricalOrientation(int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, AXIS_ORIENTATION, pointerIndex, pos); |
| } |
| |
| /** |
| * Returns the historical value of the requested axis, as per {@link #getAxisValue(int, int)}, |
| * occurred between this event and the previous event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param axis The axis identifier for the axis value to retrieve. |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * @return The value of the axis, or 0 if the axis is not available. |
| * |
| * @see #AXIS_X |
| * @see #AXIS_Y |
| */ |
| public final float getHistoricalAxisValue(int axis, int pointerIndex, int pos) { |
| return nativeGetAxisValue(mNativePtr, axis, pointerIndex, pos); |
| } |
| |
| /** |
| * Populates a {@link PointerCoords} object with historical pointer coordinate data, |
| * as per {@link #getPointerCoords}, that occurred between this event and the previous |
| * event for the given pointer. |
| * Only applies to ACTION_MOVE events. |
| * |
| * @param pointerIndex Raw index of pointer to retrieve. Value may be from 0 |
| * (the first pointer that is down) to {@link #getPointerCount()}-1. |
| * @param pos Which historical value to return; must be less than |
| * {@link #getHistorySize} |
| * @param outPointerCoords The pointer coordinate object to populate. |
| * |
| * @see #getHistorySize |
| * @see #getPointerCoords |
| * @see PointerCoords |
| */ |
| public final void getHistoricalPointerCoords(int pointerIndex, int pos, |
| PointerCoords outPointerCoords) { |
| nativeGetPointerCoords(mNativePtr, pointerIndex, pos, outPointerCoords); |
| } |
| |
| /** |
| * Returns a bitfield indicating which edges, if any, were touched by this |
| * MotionEvent. For touch events, clients can use this to determine if the |
| * user's finger was touching the edge of the display. |
| * |
| * @see #EDGE_LEFT |
| * @see #EDGE_TOP |
| * @see #EDGE_RIGHT |
| * @see #EDGE_BOTTOM |
| */ |
| public final int getEdgeFlags() { |
| return nativeGetEdgeFlags(mNativePtr); |
| } |
| |
| /** |
| * Sets the bitfield indicating which edges, if any, were touched by this |
| * MotionEvent. |
| * |
| * @see #getEdgeFlags() |
| */ |
| public final void setEdgeFlags(int flags) { |
| nativeSetEdgeFlags(mNativePtr, flags); |
| } |
| |
| /** |
| * Sets this event's action. |
| */ |
| public final void setAction(int action) { |
| nativeSetAction(mNativePtr, action); |
| } |
| |
| /** |
| * Adjust this event's location. |
| * @param deltaX Amount to add to the current X coordinate of the event. |
| * @param deltaY Amount to add to the current Y coordinate of the event. |
| */ |
| public final void offsetLocation(float deltaX, float deltaY) { |
| nativeOffsetLocation(mNativePtr, deltaX, deltaY); |
| } |
| |
| /** |
| * Set this event's location. Applies {@link #offsetLocation} with a |
| * delta from the current location to the given new location. |
| * |
| * @param x New absolute X location. |
| * @param y New absolute Y location. |
| */ |
| public final void setLocation(float x, float y) { |
| float oldX = getX(); |
| float oldY = getY(); |
| nativeOffsetLocation(mNativePtr, x - oldX, y - oldY); |
| } |
| |
| /** |
| * Applies a transformation matrix to all of the points in the event. |
| * |
| * @param matrix The transformation matrix to apply. |
| */ |
| public final void transform(Matrix matrix) { |
| if (matrix == null) { |
| throw new IllegalArgumentException("matrix must not be null"); |
| } |
| |
| nativeTransform(mNativePtr, matrix); |
| } |
| |
| /** |
| * Add a new movement to the batch of movements in this event. The event's |
| * current location, position and size is updated to the new values. |
| * The current values in the event are added to a list of historical values. |
| * |
| * Only applies to {@link #ACTION_MOVE} events. |
| * |
| * @param eventTime The time stamp (in ms) for this data. |
| * @param x The new X position. |
| * @param y The new Y position. |
| * @param pressure The new pressure. |
| * @param size The new size. |
| * @param metaState Meta key state. |
| */ |
| public final void addBatch(long eventTime, float x, float y, |
| float pressure, float size, int metaState) { |
| synchronized (gTmpPointerCoords) { |
| final PointerCoords pc = gTmpPointerCoords[0]; |
| pc.clear(); |
| pc.x = x; |
| pc.y = y; |
| pc.pressure = pressure; |
| pc.size = size; |
| nativeAddBatch(mNativePtr, eventTime * NS_PER_MS, gTmpPointerCoords, metaState); |
| } |
| } |
| |
| /** |
| * Add a new movement to the batch of movements in this event. The event's |
| * current location, position and size is updated to the new values. |
| * The current values in the event are added to a list of historical values. |
| * |
| * Only applies to {@link #ACTION_MOVE} events. |
| * |
| * @param eventTime The time stamp (in ms) for this data. |
| * @param pointerCoords The new pointer coordinates. |
| * @param metaState Meta key state. |
| */ |
| public final void addBatch(long eventTime, PointerCoords[] pointerCoords, int metaState) { |
| nativeAddBatch(mNativePtr, eventTime * NS_PER_MS, pointerCoords, metaState); |
| } |
| |
| @Override |
| public String toString() { |
| return "MotionEvent{" + Integer.toHexString(System.identityHashCode(this)) |
| + " pointerId=" + getPointerId(0) |
| + " action=" + actionToString(getAction()) |
| + " x=" + getX() |
| + " y=" + getY() |
| + " pressure=" + getPressure() |
| + " size=" + getSize() |
| + " touchMajor=" + getTouchMajor() |
| + " touchMinor=" + getTouchMinor() |
| + " toolMajor=" + getToolMajor() |
| + " toolMinor=" + getToolMinor() |
| + " orientation=" + getOrientation() |
| + " meta=" + KeyEvent.metaStateToString(getMetaState()) |
| + " pointerCount=" + getPointerCount() |
| + " historySize=" + getHistorySize() |
| + " flags=0x" + Integer.toHexString(getFlags()) |
| + " edgeFlags=0x" + Integer.toHexString(getEdgeFlags()) |
| + " device=" + getDeviceId() |
| + " source=0x" + Integer.toHexString(getSource()) |
| + (getPointerCount() > 1 ? |
| " pointerId2=" + getPointerId(1) + " x2=" + getX(1) + " y2=" + getY(1) : "") |
| + "}"; |
| } |
| |
| /** |
| * Returns a string that represents the symbolic name of the specified action |
| * such as "ACTION_DOWN", "ACTION_POINTER_DOWN(3)" or an equivalent numeric constant |
| * such as "35" if unknown. |
| * |
| * @param action The action. |
| * @return The symbolic name of the specified action. |
| * @hide |
| */ |
| public static String actionToString(int action) { |
| switch (action) { |
| case ACTION_DOWN: |
| return "ACTION_DOWN"; |
| case ACTION_UP: |
| return "ACTION_UP"; |
| case ACTION_CANCEL: |
| return "ACTION_CANCEL"; |
| case ACTION_MOVE: |
| return "ACTION_MOVE"; |
| } |
| int index = (action & ACTION_POINTER_INDEX_MASK) >> ACTION_POINTER_INDEX_SHIFT; |
| switch (action & ACTION_MASK) { |
| case ACTION_POINTER_DOWN: |
| return "ACTION_POINTER_DOWN(" + index + ")"; |
| case ACTION_POINTER_UP: |
| return "ACTION_POINTER_UP(" + index + ")"; |
| default: |
| return Integer.toString(action); |
| } |
| } |
| |
| /** |
| * Returns a string that represents the symbolic name of the specified axis |
| * such as "AXIS_X" or an equivalent numeric constants such as "42" if unknown. |
| * |
| * @param axis The axis |
| * @return The symbolic name of the specified axis. |
| * @hide |
| */ |
| public static String axisToString(int axis) { |
| switch (axis) { |
| case AXIS_X: |
| return "AXIS_X"; |
| case AXIS_Y: |
| return "AXIS_Y"; |
| case AXIS_PRESSURE: |
| return "AXIS_PRESSURE"; |
| case AXIS_SIZE: |
| return "AXIS_SIZE"; |
| case AXIS_TOUCH_MAJOR: |
| return "AXIS_TOUCH_MAJOR"; |
| case AXIS_TOUCH_MINOR: |
| return "AXIS_TOUCH_MINOR"; |
| case AXIS_TOOL_MAJOR: |
| return "AXIS_TOOL_MAJOR"; |
| case AXIS_TOOL_MINOR: |
| return "AXIS_TOOL_MINOR"; |
| case AXIS_ORIENTATION: |
| return "AXIS_ORIENTATION"; |
| default: |
| return Integer.toString(axis); |
| } |
| } |
| |
| public static final Parcelable.Creator<MotionEvent> CREATOR |
| = new Parcelable.Creator<MotionEvent>() { |
| public MotionEvent createFromParcel(Parcel in) { |
| in.readInt(); // skip token, we already know this is a MotionEvent |
| return MotionEvent.createFromParcelBody(in); |
| } |
| |
| public MotionEvent[] newArray(int size) { |
| return new MotionEvent[size]; |
| } |
| }; |
| |
| /** @hide */ |
| public static MotionEvent createFromParcelBody(Parcel in) { |
| MotionEvent ev = obtain(); |
| ev.mNativePtr = nativeReadFromParcel(ev.mNativePtr, in); |
| return ev; |
| } |
| |
| public void writeToParcel(Parcel out, int flags) { |
| out.writeInt(PARCEL_TOKEN_MOTION_EVENT); |
| nativeWriteToParcel(mNativePtr, out); |
| } |
| |
| /** |
| * Transfer object for pointer coordinates. |
| * |
| * Objects of this type can be used to manufacture new {@link MotionEvent} objects |
| * and to query pointer coordinate information in bulk. |
| * |
| * Refer to {@link InputDevice} for information about how different kinds of |
| * input devices and sources represent pointer coordinates. |
| */ |
| public static final class PointerCoords { |
| private static final int INITIAL_PACKED_AXIS_VALUES = 8; |
| private int mPackedAxisBits; // 32bits are enough for now, can raise to 64bit when needed |
| private float[] mPackedAxisValues; |
| |
| /** |
| * Creates a pointer coords object with all axes initialized to zero. |
| */ |
| public PointerCoords() { |
| } |
| |
| /** |
| * Creates a pointer coords object as a copy of the |
| * contents of another pointer coords object. |
| * |
| * @param other The pointer coords object to copy. |
| */ |
| public PointerCoords(PointerCoords other) { |
| copyFrom(other); |
| } |
| |
| /** |
| * The X coordinate of the pointer movement. |
| * The interpretation of the X axis varies by input source. |
| * It may represent the X position of the center of the touch contact area, |
| * a relative horizontal displacement of a trackball or joystick, or something else. |
| * |
| * @see MotionEvent#AXIS_X |
| */ |
| public float x; |
| |
| /** |
| * The Y coordinate of the pointer movement. |
| * The interpretation of the Y axis varies by input source. |
| * It may represent the Y position of the center of the touch contact area, |
| * a relative vertical displacement of a trackball or joystick, or something else. |
| * |
| * @see MotionEvent#AXIS_Y |
| */ |
| public float y; |
| |
| /** |
| * A normalized value that describes the pressure applied to the device |
| * by a finger or other tool. |
| * The pressure generally ranges from 0 (no pressure at all) to 1 (normal pressure), |
| * although values higher than 1 may be generated depending on the calibration of |
| * the input device. |
| * |
| * @see MotionEvent#AXIS_PRESSURE |
| */ |
| public float pressure; |
| |
| /** |
| * A normalized value that describes the approximate size of the pointer touch area |
| * in relation to the maximum detectable size of the device. |
| * It represents some approximation of the area of the screen being |
| * pressed; the actual value in pixels corresponding to the |
| * touch is normalized with the device specific range of values |
| * and scaled to a value between 0 and 1. The value of size can be used to |
| * determine fat touch events. |
| * |
| * @see MotionEvent#AXIS_SIZE |
| */ |
| public float size; |
| |
| /** |
| * The length of the major axis of an ellipse that describes the touch area at |
| * the point of contact. |
| * If the device is a touch screen, the length is reported in pixels, otherwise it is |
| * reported in device-specific units. |
| * |
| * @see MotionEvent#AXIS_TOUCH_MAJOR |
| */ |
| public float touchMajor; |
| |
| /** |
| * The length of the minor axis of an ellipse that describes the touch area at |
| * the point of contact. |
| * If the device is a touch screen, the length is reported in pixels, otherwise it is |
| * reported in device-specific units. |
| * |
| * @see MotionEvent#AXIS_TOUCH_MINOR |
| */ |
| public float touchMinor; |
| |
| /** |
| * The length of the major axis of an ellipse that describes the size of |
| * the approaching tool. |
| * The tool area represents the estimated size of the finger or pen that is |
| * touching the device independent of its actual touch area at the point of contact. |
| * If the device is a touch screen, the length is reported in pixels, otherwise it is |
| * reported in device-specific units. |
| * |
| * @see MotionEvent#AXIS_TOOL_MAJOR |
| */ |
| public float toolMajor; |
| |
| /** |
| * The length of the minor axis of an ellipse that describes the size of |
| * the approaching tool. |
| * The tool area represents the estimated size of the finger or pen that is |
| * touching the device independent of its actual touch area at the point of contact. |
| * If the device is a touch screen, the length is reported in pixels, otherwise it is |
| * reported in device-specific units. |
| * |
| * @see MotionEvent#AXIS_TOOL_MINOR |
| */ |
| public float toolMinor; |
| |
| /** |
| * The orientation of the touch area and tool area in radians clockwise from vertical. |
| * An angle of 0 degrees indicates that the major axis of contact is oriented |
| * upwards, is perfectly circular or is of unknown orientation. A positive angle |
| * indicates that the major axis of contact is oriented to the right. A negative angle |
| * indicates that the major axis of contact is oriented to the left. |
| * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians |
| * (finger pointing fully right). |
| * |
| * @see MotionEvent#AXIS_ORIENTATION |
| */ |
| public float orientation; |
| |
| /** |
| * Clears the contents of this object. |
| * Resets all axes to zero. |
| */ |
| public void clear() { |
| mPackedAxisBits = 0; |
| |
| x = 0; |
| y = 0; |
| pressure = 0; |
| size = 0; |
| touchMajor = 0; |
| touchMinor = 0; |
| toolMajor = 0; |
| toolMinor = 0; |
| orientation = 0; |
| } |
| |
| /** |
| * Copies the contents of another pointer coords object. |
| * |
| * @param other The pointer coords object to copy. |
| */ |
| public void copyFrom(PointerCoords other) { |
| final int bits = other.mPackedAxisBits; |
| mPackedAxisBits = bits; |
| if (bits != 0) { |
| final float[] otherValues = other.mPackedAxisValues; |
| final int count = Integer.bitCount(bits); |
| float[] values = mPackedAxisValues; |
| if (values == null || count > values.length) { |
| values = new float[otherValues.length]; |
| mPackedAxisValues = values; |
| } |
| System.arraycopy(otherValues, 0, values, 0, count); |
| } |
| |
| x = other.x; |
| y = other.y; |
| pressure = other.pressure; |
| size = other.size; |
| touchMajor = other.touchMajor; |
| touchMinor = other.touchMinor; |
| toolMajor = other.toolMajor; |
| toolMinor = other.toolMinor; |
| orientation = other.orientation; |
| } |
| |
| /** |
| * Gets the value associated with the specified axis. |
| * |
| * @param axis The axis identifier for the axis value to retrieve. |
| * @return The value associated with the axis, or 0 if none. |
| * |
| * @see MotionEvent#AXIS_X |
| * @see MotionEvent#AXIS_Y |
| */ |
| public float getAxisValue(int axis) { |
| switch (axis) { |
| case AXIS_X: |
| return x; |
| case AXIS_Y: |
| return y; |
| case AXIS_PRESSURE: |
| return pressure; |
| case AXIS_SIZE: |
| return size; |
| case AXIS_TOUCH_MAJOR: |
| return touchMajor; |
| case AXIS_TOUCH_MINOR: |
| return touchMinor; |
| case AXIS_TOOL_MAJOR: |
| return toolMajor; |
| case AXIS_TOOL_MINOR: |
| return toolMinor; |
| case AXIS_ORIENTATION: |
| return orientation; |
| default: { |
| final int bits = mPackedAxisBits; |
| final int axisBit = 1 << axis; |
| if ((bits & axisBit) == 0) { |
| return 0; |
| } |
| final int index = Integer.bitCount(bits & (axisBit - 1)); |
| return mPackedAxisValues[index]; |
| } |
| } |
| } |
| |
| /** |
| * Sets the value associated with the specified axis. |
| * |
| * @param axis The axis identifier for the axis value to assign. |
| * @param value The value to set. |
| * |
| * @see MotionEvent#AXIS_X |
| * @see MotionEvent#AXIS_Y |
| */ |
| public void setAxisValue(int axis, float value) { |
| switch (axis) { |
| case AXIS_X: |
| x = value; |
| break; |
| case AXIS_Y: |
| y = value; |
| break; |
| case AXIS_PRESSURE: |
| pressure = value; |
| break; |
| case AXIS_SIZE: |
| size = value; |
| break; |
| case AXIS_TOUCH_MAJOR: |
| touchMajor = value; |
| break; |
| case AXIS_TOUCH_MINOR: |
| touchMinor = value; |
| break; |
| case AXIS_TOOL_MAJOR: |
| toolMajor = value; |
| break; |
| case AXIS_TOOL_MINOR: |
| toolMinor = value; |
| break; |
| case AXIS_ORIENTATION: |
| orientation = value; |
| break; |
| default: { |
| final int bits = mPackedAxisBits; |
| final int axisBit = 1 << axis; |
| final int index = Integer.bitCount(bits & (axisBit - 1)); |
| float[] values = mPackedAxisValues; |
| if ((bits & axisBit) == 0) { |
| if (values == null) { |
| values = new float[INITIAL_PACKED_AXIS_VALUES]; |
| mPackedAxisValues = values; |
| } else { |
| final int count = Integer.bitCount(bits); |
| if (count < values.length) { |
| if (index != count) { |
| System.arraycopy(values, index, values, index + 1, |
| count - index); |
| } |
| } else { |
| float[] newValues = new float[count * 2]; |
| System.arraycopy(values, 0, newValues, 0, index); |
| System.arraycopy(values, index, newValues, index + 1, |
| count - index); |
| values = newValues; |
| mPackedAxisValues = values; |
| } |
| } |
| mPackedAxisBits = bits | axisBit; |
| } |
| values[index] = value; |
| } |
| } |
| } |
| } |
| } |