9822d2b273
The MotionEvent API should be fairly solid, but there is still a lot of work to do in the input device code. In particular, right now we are really stupid about watching how fingers change -- we just take whatever the driver reports as down and dump that directly into the motion event. The big remaning work is to assign pointer IDs so that applications have help in determine which fingers go up and down, and adding support for the official multi-touch driver protocol.
342 lines
14 KiB
Java
342 lines
14 KiB
Java
/*
|
|
* 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 com.android.server;
|
|
|
|
import android.util.Log;
|
|
import android.view.Display;
|
|
import android.view.MotionEvent;
|
|
import android.view.Surface;
|
|
import android.view.WindowManagerPolicy;
|
|
|
|
public class InputDevice {
|
|
/** Amount that trackball needs to move in order to generate a key event. */
|
|
static final int TRACKBALL_MOVEMENT_THRESHOLD = 6;
|
|
|
|
/** Maximum number of pointers we will track and report. */
|
|
static final int MAX_POINTERS = 2;
|
|
|
|
final int id;
|
|
final int classes;
|
|
final String name;
|
|
final AbsoluteInfo absX;
|
|
final AbsoluteInfo absY;
|
|
final AbsoluteInfo absPressure;
|
|
final AbsoluteInfo absSize;
|
|
|
|
long mKeyDownTime = 0;
|
|
int mMetaKeysState = 0;
|
|
|
|
final MotionState mAbs = new MotionState(0, 0);
|
|
final MotionState mRel = new MotionState(TRACKBALL_MOVEMENT_THRESHOLD,
|
|
TRACKBALL_MOVEMENT_THRESHOLD);
|
|
|
|
static class MotionState {
|
|
int xPrecision;
|
|
int yPrecision;
|
|
float xMoveScale;
|
|
float yMoveScale;
|
|
MotionEvent currentMove = null;
|
|
boolean changed = false;
|
|
boolean mLastAnyDown = false;
|
|
long mDownTime = 0;
|
|
final boolean[] mLastDown = new boolean[MAX_POINTERS];
|
|
final boolean[] mDown = new boolean[MAX_POINTERS];
|
|
final int[] mLastData = new int[MotionEvent.NUM_SAMPLE_DATA * MAX_POINTERS];
|
|
final int[] mCurData = new int[MotionEvent.NUM_SAMPLE_DATA * MAX_POINTERS];
|
|
final float[] mReportData = new float[MotionEvent.NUM_SAMPLE_DATA * MAX_POINTERS];
|
|
|
|
MotionState(int mx, int my) {
|
|
xPrecision = mx;
|
|
yPrecision = my;
|
|
xMoveScale = mx != 0 ? (1.0f/mx) : 1.0f;
|
|
yMoveScale = my != 0 ? (1.0f/my) : 1.0f;
|
|
}
|
|
|
|
MotionEvent generateAbsMotion(InputDevice device, long curTime,
|
|
long curTimeNano, Display display, int orientation,
|
|
int metaState) {
|
|
|
|
final float[] scaled = mReportData;
|
|
final int[] cur = mCurData;
|
|
|
|
boolean anyDown = false;
|
|
int firstDownChanged = -1;
|
|
int numPointers = 0;
|
|
for (int i=0; i<MAX_POINTERS; i++) {
|
|
boolean d = mDown[i];
|
|
anyDown |= d;
|
|
if (d != mLastDown[i] && firstDownChanged < 0) {
|
|
firstDownChanged = i;
|
|
mLastDown[i] = mDown[i];
|
|
d = true;
|
|
}
|
|
|
|
if (d) {
|
|
final int src = i * MotionEvent.NUM_SAMPLE_DATA;
|
|
final int dest = numPointers * MotionEvent.NUM_SAMPLE_DATA;
|
|
numPointers++;
|
|
scaled[dest + MotionEvent.SAMPLE_X] = cur[src + MotionEvent.SAMPLE_X];
|
|
scaled[dest + MotionEvent.SAMPLE_Y] = cur[src + MotionEvent.SAMPLE_Y];
|
|
scaled[dest + MotionEvent.SAMPLE_PRESSURE] = cur[src + MotionEvent.SAMPLE_PRESSURE];
|
|
scaled[dest + MotionEvent.SAMPLE_SIZE] = cur[src + MotionEvent.SAMPLE_SIZE];
|
|
}
|
|
}
|
|
|
|
if (numPointers <= 0) {
|
|
return null;
|
|
}
|
|
|
|
int action;
|
|
int edgeFlags = 0;
|
|
if (anyDown != mLastAnyDown) {
|
|
final AbsoluteInfo absX = device.absX;
|
|
final AbsoluteInfo absY = device.absY;
|
|
if (anyDown && absX != null && absY != null) {
|
|
// We don't let downs start unless we are
|
|
// inside of the screen. There are two reasons for
|
|
// this: to avoid spurious touches when holding
|
|
// the edges of the device near the touchscreen,
|
|
// and to avoid reporting events if there are virtual
|
|
// keys on the touchscreen outside of the display
|
|
// area.
|
|
// Note that we are only looking at the first pointer,
|
|
// since what we are handling here is the first pointer
|
|
// going down, and this is the coordinate that will be
|
|
// used to dispatch the event.
|
|
if (cur[MotionEvent.SAMPLE_X] < absX.minValue
|
|
|| cur[MotionEvent.SAMPLE_X] > absX.maxValue
|
|
|| cur[MotionEvent.SAMPLE_Y] < absY.minValue
|
|
|| cur[MotionEvent.SAMPLE_Y] > absY.maxValue) {
|
|
if (false) Log.v("InputDevice", "Rejecting ("
|
|
+ cur[MotionEvent.SAMPLE_X] + ","
|
|
+ cur[MotionEvent.SAMPLE_Y] + "): outside of ("
|
|
+ absX.minValue + "," + absY.minValue
|
|
+ ")-(" + absX.maxValue + ","
|
|
+ absY.maxValue + ")");
|
|
return null;
|
|
}
|
|
}
|
|
mLastAnyDown = anyDown;
|
|
if (anyDown) {
|
|
action = MotionEvent.ACTION_DOWN;
|
|
mDownTime = curTime;
|
|
} else {
|
|
action = MotionEvent.ACTION_UP;
|
|
}
|
|
currentMove = null;
|
|
} else if (firstDownChanged >= 0) {
|
|
if (mDown[firstDownChanged]) {
|
|
action = MotionEvent.ACTION_POINTER_DOWN
|
|
| (firstDownChanged << MotionEvent.ACTION_POINTER_SHIFT);
|
|
} else {
|
|
action = MotionEvent.ACTION_POINTER_UP
|
|
| (firstDownChanged << MotionEvent.ACTION_POINTER_SHIFT);
|
|
}
|
|
currentMove = null;
|
|
} else {
|
|
action = MotionEvent.ACTION_MOVE;
|
|
}
|
|
|
|
final int dispW = display.getWidth()-1;
|
|
final int dispH = display.getHeight()-1;
|
|
int w = dispW;
|
|
int h = dispH;
|
|
if (orientation == Surface.ROTATION_90
|
|
|| orientation == Surface.ROTATION_270) {
|
|
int tmp = w;
|
|
w = h;
|
|
h = tmp;
|
|
}
|
|
|
|
final AbsoluteInfo absX = device.absX;
|
|
final AbsoluteInfo absY = device.absY;
|
|
final AbsoluteInfo absPressure = device.absPressure;
|
|
final AbsoluteInfo absSize = device.absSize;
|
|
for (int i=0; i<numPointers; i++) {
|
|
final int j = i * MotionEvent.NUM_SAMPLE_DATA;
|
|
|
|
if (absX != null) {
|
|
scaled[j + MotionEvent.SAMPLE_X] =
|
|
((scaled[j + MotionEvent.SAMPLE_X]-absX.minValue)
|
|
/ absX.range) * w;
|
|
}
|
|
if (absY != null) {
|
|
scaled[j + MotionEvent.SAMPLE_Y] =
|
|
((scaled[j + MotionEvent.SAMPLE_Y]-absY.minValue)
|
|
/ absY.range) * h;
|
|
}
|
|
if (absPressure != null) {
|
|
scaled[j + MotionEvent.SAMPLE_PRESSURE] =
|
|
((scaled[j + MotionEvent.SAMPLE_PRESSURE]-absPressure.minValue)
|
|
/ (float)absPressure.range);
|
|
}
|
|
if (absSize != null) {
|
|
scaled[j + MotionEvent.SAMPLE_SIZE] =
|
|
((scaled[j + MotionEvent.SAMPLE_SIZE]-absSize.minValue)
|
|
/ (float)absSize.range);
|
|
}
|
|
|
|
switch (orientation) {
|
|
case Surface.ROTATION_90: {
|
|
final float temp = scaled[MotionEvent.SAMPLE_X];
|
|
scaled[j + MotionEvent.SAMPLE_X] = scaled[j + MotionEvent.SAMPLE_Y];
|
|
scaled[j + MotionEvent.SAMPLE_Y] = w-temp;
|
|
break;
|
|
}
|
|
case Surface.ROTATION_180: {
|
|
scaled[j + MotionEvent.SAMPLE_X] = w-scaled[j + MotionEvent.SAMPLE_X];
|
|
scaled[j + MotionEvent.SAMPLE_Y] = h-scaled[j + MotionEvent.SAMPLE_Y];
|
|
break;
|
|
}
|
|
case Surface.ROTATION_270: {
|
|
final float temp = scaled[i + MotionEvent.SAMPLE_X];
|
|
scaled[j + MotionEvent.SAMPLE_X] = h-scaled[j + MotionEvent.SAMPLE_Y];
|
|
scaled[j + MotionEvent.SAMPLE_Y] = temp;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// We only consider the first pointer when computing the edge
|
|
// flags, since they are global to the event.
|
|
if (action != MotionEvent.ACTION_DOWN) {
|
|
if (scaled[MotionEvent.SAMPLE_X] <= 0) {
|
|
edgeFlags |= MotionEvent.EDGE_LEFT;
|
|
} else if (scaled[MotionEvent.SAMPLE_X] >= dispW) {
|
|
edgeFlags |= MotionEvent.EDGE_RIGHT;
|
|
}
|
|
if (scaled[MotionEvent.SAMPLE_Y] <= 0) {
|
|
edgeFlags |= MotionEvent.EDGE_TOP;
|
|
} else if (scaled[MotionEvent.SAMPLE_Y] >= dispH) {
|
|
edgeFlags |= MotionEvent.EDGE_BOTTOM;
|
|
}
|
|
}
|
|
|
|
if (currentMove != null) {
|
|
if (false) Log.i("InputDevice", "Adding batch x="
|
|
+ scaled[MotionEvent.SAMPLE_X]
|
|
+ " y=" + scaled[MotionEvent.SAMPLE_Y]
|
|
+ " to " + currentMove);
|
|
currentMove.addBatch(curTime, scaled, metaState);
|
|
if (WindowManagerPolicy.WATCH_POINTER) {
|
|
Log.i("KeyInputQueue", "Updating: " + currentMove);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
MotionEvent me = MotionEvent.obtainNano(mDownTime, curTime,
|
|
curTimeNano, action, numPointers, scaled, metaState,
|
|
xPrecision, yPrecision, device.id, edgeFlags);
|
|
if (action == MotionEvent.ACTION_MOVE) {
|
|
currentMove = me;
|
|
}
|
|
return me;
|
|
}
|
|
|
|
MotionEvent generateRelMotion(InputDevice device, long curTime,
|
|
long curTimeNano, int orientation, int metaState) {
|
|
|
|
final float[] scaled = mReportData;
|
|
|
|
// For now we only support 1 pointer with relative motions.
|
|
scaled[MotionEvent.SAMPLE_X] = mCurData[MotionEvent.SAMPLE_X];
|
|
scaled[MotionEvent.SAMPLE_Y] = mCurData[MotionEvent.SAMPLE_Y];
|
|
scaled[MotionEvent.SAMPLE_PRESSURE] = 1.0f;
|
|
scaled[MotionEvent.SAMPLE_SIZE] = 0;
|
|
int edgeFlags = 0;
|
|
|
|
int action;
|
|
if (mDown[0] != mLastDown[0]) {
|
|
mCurData[MotionEvent.SAMPLE_X] =
|
|
mCurData[MotionEvent.SAMPLE_Y] = 0;
|
|
mLastDown[0] = mDown[0];
|
|
if (mDown[0]) {
|
|
action = MotionEvent.ACTION_DOWN;
|
|
mDownTime = curTime;
|
|
} else {
|
|
action = MotionEvent.ACTION_UP;
|
|
}
|
|
currentMove = null;
|
|
} else {
|
|
action = MotionEvent.ACTION_MOVE;
|
|
}
|
|
|
|
scaled[MotionEvent.SAMPLE_X] *= xMoveScale;
|
|
scaled[MotionEvent.SAMPLE_Y] *= yMoveScale;
|
|
switch (orientation) {
|
|
case Surface.ROTATION_90: {
|
|
final float temp = scaled[MotionEvent.SAMPLE_X];
|
|
scaled[MotionEvent.SAMPLE_X] = scaled[MotionEvent.SAMPLE_Y];
|
|
scaled[MotionEvent.SAMPLE_Y] = -temp;
|
|
break;
|
|
}
|
|
case Surface.ROTATION_180: {
|
|
scaled[MotionEvent.SAMPLE_X] = -scaled[MotionEvent.SAMPLE_X];
|
|
scaled[MotionEvent.SAMPLE_Y] = -scaled[MotionEvent.SAMPLE_Y];
|
|
break;
|
|
}
|
|
case Surface.ROTATION_270: {
|
|
final float temp = scaled[MotionEvent.SAMPLE_X];
|
|
scaled[MotionEvent.SAMPLE_X] = -scaled[MotionEvent.SAMPLE_Y];
|
|
scaled[MotionEvent.SAMPLE_Y] = temp;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (currentMove != null) {
|
|
if (false) Log.i("InputDevice", "Adding batch x="
|
|
+ scaled[MotionEvent.SAMPLE_X]
|
|
+ " y=" + scaled[MotionEvent.SAMPLE_Y]
|
|
+ " to " + currentMove);
|
|
currentMove.addBatch(curTime, scaled, metaState);
|
|
if (WindowManagerPolicy.WATCH_POINTER) {
|
|
Log.i("KeyInputQueue", "Updating: " + currentMove);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
MotionEvent me = MotionEvent.obtainNano(mDownTime, curTime,
|
|
curTimeNano, action, 1, scaled, metaState,
|
|
xPrecision, yPrecision, device.id, edgeFlags);
|
|
if (action == MotionEvent.ACTION_MOVE) {
|
|
currentMove = me;
|
|
}
|
|
return me;
|
|
}
|
|
}
|
|
|
|
static class AbsoluteInfo {
|
|
int minValue;
|
|
int maxValue;
|
|
int range;
|
|
int flat;
|
|
int fuzz;
|
|
};
|
|
|
|
InputDevice(int _id, int _classes, String _name,
|
|
AbsoluteInfo _absX, AbsoluteInfo _absY,
|
|
AbsoluteInfo _absPressure, AbsoluteInfo _absSize) {
|
|
id = _id;
|
|
classes = _classes;
|
|
name = _name;
|
|
absX = _absX;
|
|
absY = _absY;
|
|
absPressure = _absPressure;
|
|
absSize = _absSize;
|
|
}
|
|
};
|