Add Pointer Location to the window manager.
The window manager now has pointer location built into it. Viva la touch!
This commit is contained in:
Dianne Hackborn
parent
fe7a18c4e1
commit
4a455d8c36
333
common/java/com/android/common/ui/PointerLocationView.java
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333
common/java/com/android/common/ui/PointerLocationView.java
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package com.android.common.ui;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.Paint.FontMetricsInt;
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import android.util.Log;
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import android.view.MotionEvent;
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import android.view.VelocityTracker;
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import android.view.View;
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import android.view.ViewConfiguration;
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import java.util.ArrayList;
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public class PointerLocationView extends View {
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public static class PointerState {
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private final ArrayList<Float> mXs = new ArrayList<Float>();
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private final ArrayList<Float> mYs = new ArrayList<Float>();
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private boolean mCurDown;
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private int mCurX;
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private int mCurY;
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private float mCurPressure;
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private float mCurSize;
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private int mCurWidth;
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private VelocityTracker mVelocity;
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}
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private final ViewConfiguration mVC;
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private final Paint mTextPaint;
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private final Paint mTextBackgroundPaint;
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private final Paint mTextLevelPaint;
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private final Paint mPaint;
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private final Paint mTargetPaint;
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private final Paint mPathPaint;
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private final FontMetricsInt mTextMetrics = new FontMetricsInt();
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private int mHeaderBottom;
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private boolean mCurDown;
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private int mCurNumPointers;
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private int mMaxNumPointers;
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private final ArrayList<PointerState> mPointers
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= new ArrayList<PointerState>();
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private boolean mPrintCoords = true;
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public PointerLocationView(Context c) {
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super(c);
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mVC = ViewConfiguration.get(c);
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mTextPaint = new Paint();
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mTextPaint.setAntiAlias(true);
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mTextPaint.setTextSize(10
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* getResources().getDisplayMetrics().density);
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mTextPaint.setARGB(255, 0, 0, 0);
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mTextBackgroundPaint = new Paint();
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mTextBackgroundPaint.setAntiAlias(false);
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mTextBackgroundPaint.setARGB(128, 255, 255, 255);
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mTextLevelPaint = new Paint();
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mTextLevelPaint.setAntiAlias(false);
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mTextLevelPaint.setARGB(192, 255, 0, 0);
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mPaint = new Paint();
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mPaint.setAntiAlias(true);
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mPaint.setARGB(255, 255, 255, 255);
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mPaint.setStyle(Paint.Style.STROKE);
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mPaint.setStrokeWidth(2);
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mTargetPaint = new Paint();
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mTargetPaint.setAntiAlias(false);
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mTargetPaint.setARGB(255, 0, 0, 192);
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mPathPaint = new Paint();
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mPathPaint.setAntiAlias(false);
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mPathPaint.setARGB(255, 0, 96, 255);
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mPaint.setStyle(Paint.Style.STROKE);
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mPaint.setStrokeWidth(1);
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PointerState ps = new PointerState();
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ps.mVelocity = VelocityTracker.obtain();
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mPointers.add(ps);
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}
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public void setPrintCoords(boolean state) {
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mPrintCoords = state;
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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mTextPaint.getFontMetricsInt(mTextMetrics);
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mHeaderBottom = -mTextMetrics.ascent+mTextMetrics.descent+2;
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if (false) {
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Log.i("foo", "Metrics: ascent=" + mTextMetrics.ascent
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+ " descent=" + mTextMetrics.descent
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+ " leading=" + mTextMetrics.leading
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+ " top=" + mTextMetrics.top
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+ " bottom=" + mTextMetrics.bottom);
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}
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}
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@Override
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protected void onDraw(Canvas canvas) {
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synchronized (mPointers) {
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final int w = getWidth();
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final int itemW = w/7;
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final int base = -mTextMetrics.ascent+1;
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final int bottom = mHeaderBottom;
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final int NP = mPointers.size();
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if (NP > 0) {
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final PointerState ps = mPointers.get(0);
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canvas.drawRect(0, 0, itemW-1, bottom,mTextBackgroundPaint);
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canvas.drawText("P: " + mCurNumPointers + " / " + mMaxNumPointers,
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1, base, mTextPaint);
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final int N = ps.mXs.size();
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if ((mCurDown && ps.mCurDown) || N == 0) {
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canvas.drawRect(itemW, 0, (itemW * 2) - 1, bottom, mTextBackgroundPaint);
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canvas.drawText("X: " + ps.mCurX, 1 + itemW, base, mTextPaint);
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canvas.drawRect(itemW * 2, 0, (itemW * 3) - 1, bottom, mTextBackgroundPaint);
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canvas.drawText("Y: " + ps.mCurY, 1 + itemW * 2, base, mTextPaint);
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} else {
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float dx = ps.mXs.get(N-1) - ps.mXs.get(0);
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float dy = ps.mYs.get(N-1) - ps.mYs.get(0);
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canvas.drawRect(itemW, 0, (itemW * 2) - 1, bottom,
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Math.abs(dx) < mVC.getScaledTouchSlop()
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? mTextBackgroundPaint : mTextLevelPaint);
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canvas.drawText("dX: " + String.format("%.1f", dx), 1 + itemW, base, mTextPaint);
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canvas.drawRect(itemW * 2, 0, (itemW * 3) - 1, bottom,
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Math.abs(dy) < mVC.getScaledTouchSlop()
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? mTextBackgroundPaint : mTextLevelPaint);
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canvas.drawText("dY: " + String.format("%.1f", dy), 1 + itemW * 2, base, mTextPaint);
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}
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canvas.drawRect(itemW * 3, 0, (itemW * 4) - 1, bottom, mTextBackgroundPaint);
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int velocity = ps.mVelocity == null ? 0 : (int) (ps.mVelocity.getXVelocity() * 1000);
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canvas.drawText("Xv: " + velocity, 1 + itemW * 3, base, mTextPaint);
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canvas.drawRect(itemW * 4, 0, (itemW * 5) - 1, bottom, mTextBackgroundPaint);
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velocity = ps.mVelocity == null ? 0 : (int) (ps.mVelocity.getYVelocity() * 1000);
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canvas.drawText("Yv: " + velocity, 1 + itemW * 4, base, mTextPaint);
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canvas.drawRect(itemW * 5, 0, (itemW * 6) - 1, bottom, mTextBackgroundPaint);
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canvas.drawRect(itemW * 5, 0, (itemW * 5) + (ps.mCurPressure * itemW) - 1,
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bottom, mTextLevelPaint);
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canvas.drawText("Prs: " + String.format("%.2f", ps.mCurPressure), 1 + itemW * 5,
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base, mTextPaint);
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canvas.drawRect(itemW * 6, 0, w, bottom, mTextBackgroundPaint);
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canvas.drawRect(itemW * 6, 0, (itemW * 6) + (ps.mCurSize * itemW) - 1,
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bottom, mTextLevelPaint);
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canvas.drawText("Size: " + String.format("%.2f", ps.mCurSize), 1 + itemW * 6,
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base, mTextPaint);
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}
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for (int p=0; p<NP; p++) {
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final PointerState ps = mPointers.get(p);
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if (mCurDown && ps.mCurDown) {
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canvas.drawLine(0, (int)ps.mCurY, getWidth(), (int)ps.mCurY, mTargetPaint);
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canvas.drawLine((int)ps.mCurX, 0, (int)ps.mCurX, getHeight(), mTargetPaint);
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int pressureLevel = (int)(ps.mCurPressure*255);
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mPaint.setARGB(255, pressureLevel, 128, 255-pressureLevel);
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canvas.drawPoint(ps.mCurX, ps.mCurY, mPaint);
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canvas.drawCircle(ps.mCurX, ps.mCurY, ps.mCurWidth, mPaint);
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}
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}
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for (int p=0; p<NP; p++) {
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final PointerState ps = mPointers.get(p);
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final int N = ps.mXs.size();
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float lastX=0, lastY=0;
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boolean haveLast = false;
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boolean drawn = false;
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mPaint.setARGB(255, 128, 255, 255);
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for (int i=0; i<N; i++) {
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float x = ps.mXs.get(i);
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float y = ps.mYs.get(i);
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if (Float.isNaN(x)) {
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haveLast = false;
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continue;
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}
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if (haveLast) {
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canvas.drawLine(lastX, lastY, x, y, mPathPaint);
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canvas.drawPoint(lastX, lastY, mPaint);
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drawn = true;
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}
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lastX = x;
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lastY = y;
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haveLast = true;
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}
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if (drawn) {
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if (ps.mVelocity != null) {
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mPaint.setARGB(255, 255, 64, 128);
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float xVel = ps.mVelocity.getXVelocity() * (1000/60);
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float yVel = ps.mVelocity.getYVelocity() * (1000/60);
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canvas.drawLine(lastX, lastY, lastX+xVel, lastY+yVel, mPaint);
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} else {
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canvas.drawPoint(lastX, lastY, mPaint);
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}
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}
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}
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}
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}
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public void addTouchEvent(MotionEvent event) {
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synchronized (mPointers) {
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int action = event.getAction();
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//Log.i("Pointer", "Motion: action=0x" + Integer.toHexString(action)
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// + " pointers=" + event.getPointerCount());
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int NP = mPointers.size();
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//mRect.set(0, 0, getWidth(), mHeaderBottom+1);
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//invalidate(mRect);
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//if (mCurDown) {
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// mRect.set(mCurX-mCurWidth-3, mCurY-mCurWidth-3,
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// mCurX+mCurWidth+3, mCurY+mCurWidth+3);
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//} else {
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// mRect.setEmpty();
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//}
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if (action == MotionEvent.ACTION_DOWN) {
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for (int p=0; p<NP; p++) {
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final PointerState ps = mPointers.get(p);
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ps.mXs.clear();
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ps.mYs.clear();
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ps.mVelocity = VelocityTracker.obtain();
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ps.mCurDown = false;
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}
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mPointers.get(0).mCurDown = true;
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mMaxNumPointers = 0;
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if (mPrintCoords) {
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Log.i("Pointer", "Pointer 1: DOWN");
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}
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}
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if ((action&MotionEvent.ACTION_MASK) == MotionEvent.ACTION_POINTER_DOWN) {
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final int id = (action&MotionEvent.ACTION_POINTER_ID_MASK)
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>> MotionEvent.ACTION_POINTER_ID_SHIFT;
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while (NP <= id) {
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PointerState ps = new PointerState();
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ps.mVelocity = VelocityTracker.obtain();
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mPointers.add(ps);
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NP++;
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}
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final PointerState ps = mPointers.get(id);
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ps.mVelocity = VelocityTracker.obtain();
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ps.mCurDown = true;
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if (mPrintCoords) {
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Log.i("Pointer", "Pointer " + (id+1) + ": DOWN");
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}
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}
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final int NI = event.getPointerCount();
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mCurDown = action != MotionEvent.ACTION_UP
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&& action != MotionEvent.ACTION_CANCEL;
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mCurNumPointers = mCurDown ? NI : 0;
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if (mMaxNumPointers < mCurNumPointers) {
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mMaxNumPointers = mCurNumPointers;
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}
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for (int i=0; i<NI; i++) {
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final PointerState ps = mPointers.get(event.getPointerId(i));
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ps.mVelocity.addMovement(event);
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ps.mVelocity.computeCurrentVelocity(1);
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final int N = event.getHistorySize();
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for (int j=0; j<N; j++) {
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if (mPrintCoords) {
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Log.i("Pointer", "Pointer " + (i+1) + ": ("
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+ event.getHistoricalX(i, j)
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+ ", " + event.getHistoricalY(i, j) + ")"
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+ " Prs=" + event.getHistoricalPressure(i, j)
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+ " Size=" + event.getHistoricalSize(i, j));
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}
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ps.mXs.add(event.getHistoricalX(i, j));
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ps.mYs.add(event.getHistoricalY(i, j));
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}
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if (mPrintCoords) {
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Log.i("Pointer", "Pointer " + (i+1) + ": ("
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+ event.getX(i) + ", " + event.getY(i) + ")"
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+ " Prs=" + event.getPressure(i)
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+ " Size=" + event.getSize(i));
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}
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ps.mXs.add(event.getX(i));
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ps.mYs.add(event.getY(i));
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ps.mCurX = (int)event.getX(i);
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ps.mCurY = (int)event.getY(i);
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//Log.i("Pointer", "Pointer #" + p + ": (" + ps.mCurX
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// + "," + ps.mCurY + ")");
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ps.mCurPressure = event.getPressure(i);
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ps.mCurSize = event.getSize(i);
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ps.mCurWidth = (int)(ps.mCurSize*(getWidth()/3));
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}
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if ((action&MotionEvent.ACTION_MASK) == MotionEvent.ACTION_POINTER_UP) {
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final int id = (action&MotionEvent.ACTION_POINTER_ID_MASK)
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>> MotionEvent.ACTION_POINTER_ID_SHIFT;
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final PointerState ps = mPointers.get(id);
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ps.mXs.add(Float.NaN);
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ps.mYs.add(Float.NaN);
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ps.mCurDown = false;
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if (mPrintCoords) {
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Log.i("Pointer", "Pointer " + (id+1) + ": UP");
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}
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}
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if (action == MotionEvent.ACTION_UP) {
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for (int i=0; i<NI; i++) {
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final PointerState ps = mPointers.get(event.getPointerId(i));
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if (ps.mCurDown) {
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ps.mCurDown = false;
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if (mPrintCoords) {
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Log.i("Pointer", "Pointer " + (i+1) + ": UP");
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}
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}
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}
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}
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//if (mCurDown) {
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// mRect.union(mCurX-mCurWidth-3, mCurY-mCurWidth-3,
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// mCurX+mCurWidth+3, mCurY+mCurWidth+3);
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//}
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//invalidate(mRect);
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postInvalidate();
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}
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}
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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addTouchEvent(event);
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return true;
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}
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}
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