New status bar capable of multiple sliding panels.
There are some visual glitches but almost everything should
be put back pretty much where it was.
Change-Id: I2f9b0591d44599b07bd83f03c4e09e6dd98e1448
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
new file mode 100644
index 0000000..7dc8f7c
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
@@ -0,0 +1,327 @@
+package com.android.systemui.statusbar.phone;
+
+import android.animation.TimeAnimator;
+import android.animation.TimeAnimator.TimeListener;
+import android.content.Context;
+import android.content.res.Resources;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.VelocityTracker;
+import android.view.View;
+import android.widget.FrameLayout;
+
+import com.android.systemui.R;
+
+public class PanelView extends FrameLayout {
+ public static final boolean DEBUG = true;
+ public static final String TAG = PanelView.class.getSimpleName();
+ public static final void LOG(String fmt, Object... args) {
+ if (!DEBUG) return;
+ Log.v(TAG, String.format(fmt, args));
+ }
+
+ public static final boolean BRAKES = false;
+
+ private float mSelfExpandVelocityPx; // classic value: 2000px/s
+ private float mSelfCollapseVelocityPx; // classic value: 2000px/s (will be negated to collapse "up")
+ private float mFlingExpandMinVelocityPx; // classic value: 200px/s
+ private float mFlingCollapseMinVelocityPx; // classic value: 200px/s
+ private float mCollapseMinDisplayFraction; // classic value: 0.08 (25px/min(320px,480px) on G1)
+ private float mExpandMinDisplayFraction; // classic value: 0.5 (drag open halfway to expand)
+ private float mFlingGestureMaxXVelocityPx; // classic value: 150px/s
+
+ private float mExpandAccelPx; // classic value: 2000px/s/s
+ private float mCollapseAccelPx; // classic value: 2000px/s/s (will be negated to collapse "up")
+
+ private float mFlingGestureMaxOutputVelocityPx; // how fast can it really go? (should be a little
+ // faster than mSelfCollapseVelocityPx)
+
+ private float mCollapseBrakingDistancePx = 200; // XXX Resource
+ private float mExpandBrakingDistancePx = 150; // XXX Resource
+ private float mBrakingSpeedPx = 150; // XXX Resource
+
+ private View mHandleView;
+ private float mTouchOffset;
+ private float mExpandedFraction = 0;
+ private float mExpandedHeight = 0;
+
+ private TimeAnimator mTimeAnimator;
+ private VelocityTracker mVelocityTracker;
+
+ private int[] mAbsPos = new int[2];
+ PanelBar mBar;
+
+ private final TimeListener mAnimationCallback = new TimeListener() {
+ @Override
+ public void onTimeUpdate(TimeAnimator animation, long totalTime, long deltaTime) {
+ animationTick(deltaTime);
+ }
+ };
+
+ private float mVel, mAccel;
+ private int mFullHeight = 0;
+
+ private void animationTick(long dtms) {
+ if (!mTimeAnimator.isStarted()) {
+ // XXX HAX to work around bug in TimeAnimator.end() not resetting its last time
+ mTimeAnimator = new TimeAnimator();
+ mTimeAnimator.setTimeListener(mAnimationCallback);
+
+ mTimeAnimator.start();
+ } else {
+ final float dt = dtms * 0.001f; // ms -> s
+ LOG("tick: v=%.2fpx/s dt=%.4fs", mVel, dt);
+ LOG("tick: before: h=%d", (int) mExpandedHeight);
+
+ final float fh = getFullHeight();
+ final boolean closing = mExpandedHeight > 0 && mVel < 0;
+ boolean braking = false;
+ if (BRAKES) {
+ if (closing) {
+ braking = mExpandedHeight <= mCollapseBrakingDistancePx;
+ mAccel = braking ? 10*mCollapseAccelPx : -mCollapseAccelPx;
+ } else {
+ braking = mExpandedHeight >= (fh-mExpandBrakingDistancePx);
+ mAccel = braking ? 10*-mExpandAccelPx : mExpandAccelPx;
+ }
+ } else {
+ mAccel = closing ? -mCollapseAccelPx : mExpandAccelPx;
+ }
+
+ mVel += mAccel * dt;
+
+ if (braking) {
+ if (closing && mVel > -mBrakingSpeedPx) {
+ mVel = -mBrakingSpeedPx;
+ } else if (!closing && mVel < mBrakingSpeedPx) {
+ mVel = mBrakingSpeedPx;
+ }
+ } else {
+ if (closing && mVel > -mFlingCollapseMinVelocityPx) {
+ mVel = -mFlingCollapseMinVelocityPx;
+ } else if (!closing && mVel > mFlingGestureMaxOutputVelocityPx) {
+ mVel = mFlingGestureMaxOutputVelocityPx;
+ }
+ }
+
+ float h = mExpandedHeight + mVel * dt;
+
+ LOG("tick: new h=%d closing=%s", (int) h, closing?"true":"false");
+
+ setExpandedHeightInternal(h);
+
+ mBar.panelExpansionChanged(PanelView.this, mExpandedFraction);
+
+ if (mVel == 0
+ || (closing && mExpandedHeight == 0)
+ || (!closing && mExpandedHeight == getFullHeight())) {
+ mTimeAnimator.end();
+ }
+ }
+ }
+
+ public PanelView(Context context, AttributeSet attrs) {
+ super(context, attrs);
+
+ mTimeAnimator = new TimeAnimator();
+ mTimeAnimator.setTimeListener(mAnimationCallback);
+ }
+
+ private void loadDimens() {
+ final Resources res = getContext().getResources();
+
+ mSelfExpandVelocityPx = res.getDimension(R.dimen.self_expand_velocity);
+ mSelfCollapseVelocityPx = res.getDimension(R.dimen.self_collapse_velocity);
+ mFlingExpandMinVelocityPx = res.getDimension(R.dimen.fling_expand_min_velocity);
+ mFlingCollapseMinVelocityPx = res.getDimension(R.dimen.fling_collapse_min_velocity);
+
+ mCollapseMinDisplayFraction = res.getFraction(R.dimen.collapse_min_display_fraction, 1, 1);
+ mExpandMinDisplayFraction = res.getFraction(R.dimen.expand_min_display_fraction, 1, 1);
+
+ mExpandAccelPx = res.getDimension(R.dimen.expand_accel);
+ mCollapseAccelPx = res.getDimension(R.dimen.collapse_accel);
+
+ mFlingGestureMaxXVelocityPx = res.getDimension(R.dimen.fling_gesture_max_x_velocity);
+
+ mFlingGestureMaxOutputVelocityPx = res.getDimension(R.dimen.fling_gesture_max_output_velocity);
+ }
+
+ private void trackMovement(MotionEvent event) {
+ // Add movement to velocity tracker using raw screen X and Y coordinates instead
+ // of window coordinates because the window frame may be moving at the same time.
+ float deltaX = event.getRawX() - event.getX();
+ float deltaY = event.getRawY() - event.getY();
+ event.offsetLocation(deltaX, deltaY);
+ mVelocityTracker.addMovement(event);
+ event.offsetLocation(-deltaX, -deltaY);
+ }
+
+ @Override
+ protected void onFinishInflate() {
+ super.onFinishInflate();
+ loadDimens();
+
+ mHandleView = findViewById(R.id.handle);
+ LOG("handle view: " + mHandleView);
+ if (mHandleView != null) {
+ mHandleView.setOnTouchListener(new View.OnTouchListener() {
+ @Override
+ public boolean onTouch(View v, MotionEvent event) {
+ final float y = event.getY();
+ final float rawY = event.getRawY();
+ LOG("handle.onTouch: y=%.1f rawY=%.1f off=%.1f", y, rawY, mTouchOffset);
+ PanelView.this.getLocationOnScreen(mAbsPos);
+
+ switch (event.getAction()) {
+ case MotionEvent.ACTION_DOWN:
+ mVelocityTracker = VelocityTracker.obtain();
+ trackMovement(event);
+ mTouchOffset = (rawY - mAbsPos[1]) - PanelView.this.getExpandedHeight();
+ break;
+
+ case MotionEvent.ACTION_MOVE:
+ PanelView.this.setExpandedHeight(rawY - mAbsPos[1] - mTouchOffset);
+
+ mBar.panelExpansionChanged(PanelView.this, mExpandedFraction);
+
+ trackMovement(event);
+ break;
+
+ case MotionEvent.ACTION_UP:
+ case MotionEvent.ACTION_CANCEL:
+ trackMovement(event);
+ mVelocityTracker.computeCurrentVelocity(1000);
+
+ float yVel = mVelocityTracker.getYVelocity();
+ boolean negative = yVel < 0;
+
+ float xVel = mVelocityTracker.getXVelocity();
+ if (xVel < 0) {
+ xVel = -xVel;
+ }
+ if (xVel > mFlingGestureMaxXVelocityPx) {
+ xVel = mFlingGestureMaxXVelocityPx; // limit how much we care about the x axis
+ }
+
+ float vel = (float)Math.hypot(yVel, xVel);
+ if (vel > mFlingGestureMaxOutputVelocityPx) {
+ vel = mFlingGestureMaxOutputVelocityPx;
+ }
+ if (negative) {
+ vel = -vel;
+ }
+
+ LOG("gesture: vraw=(%f,%f) vnorm=(%f,%f) vlinear=%f",
+ mVelocityTracker.getXVelocity(),
+ mVelocityTracker.getYVelocity(),
+ xVel, yVel,
+ vel);
+
+ fling(vel, false);
+
+ mVelocityTracker.recycle();
+ mVelocityTracker = null;
+
+ break;
+ }
+ return true;
+ }});
+ }
+ }
+
+ public void fling(float vel, boolean always) {
+ mVel = vel;
+
+ if (mVel != 0) {
+ animationTick(0); // begin the animation
+ }
+ }
+
+ @Override
+ protected void onAttachedToWindow() {
+ super.onAttachedToWindow();
+ }
+
+ @Override
+ protected void onViewAdded(View child) {
+ LOG("onViewAdded: " + child);
+ }
+
+ public View getHandle() {
+ return mHandleView;
+ }
+
+ // Rubberbands the panel to hold its contents.
+ @Override
+ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+ super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+
+ LOG("onMeasure(%d, %d) -> (%d, %d)",
+ widthMeasureSpec, heightMeasureSpec, getMeasuredWidth(), getMeasuredHeight());
+ mFullHeight = getMeasuredHeight();
+ heightMeasureSpec = MeasureSpec.makeMeasureSpec(
+ (int) mExpandedHeight, MeasureSpec.AT_MOST); // MeasureSpec.getMode(heightMeasureSpec));
+ setMeasuredDimension(widthMeasureSpec, heightMeasureSpec);
+ }
+
+
+ public void setExpandedHeight(float height) {
+ mTimeAnimator.end();
+ setExpandedHeightInternal(height);
+ }
+
+ public void setExpandedHeightInternal(float h) {
+ float fh = getFullHeight();
+ if (fh == 0) {
+ // Hmm, full height hasn't been computed yet
+ }
+
+ LOG("setExpansion: height=%.1f fh=%.1f", h, fh);
+
+ if (h < 0) h = 0;
+ else if (h > fh) h = fh;
+
+ mExpandedHeight = h;
+
+ requestLayout();
+// FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams();
+// lp.height = (int) mExpandedHeight;
+// setLayoutParams(lp);
+
+ mExpandedFraction = Math.min(1f, h / fh);
+ }
+
+ private float getFullHeight() {
+ return mFullHeight;
+ }
+
+ public void setExpandedFraction(float frac) {
+ setExpandedHeight(getFullHeight() * frac);
+ }
+
+ public float getExpandedHeight() {
+ return mExpandedHeight;
+ }
+
+ public float getExpandedFraction() {
+ return mExpandedFraction;
+ }
+
+ public void setBar(PanelBar panelBar) {
+ mBar = panelBar;
+ }
+
+ public void collapse() {
+ // TODO: abort animation or ongoing touch
+ if (mExpandedHeight > 0) {
+ fling(-mSelfCollapseVelocityPx, /*always=*/ true);
+ }
+ }
+
+ public void expand() {
+ if (mExpandedHeight < getFullHeight()) {
+ fling (mSelfExpandVelocityPx, /*always=*/ true);
+ }
+ }
+}