| /* |
| * Copyright (C) 2012 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.systemui; |
| |
| import android.app.ActivityManager; |
| import android.content.Context; |
| import android.content.res.Configuration; |
| import android.content.res.Resources; |
| import android.graphics.Matrix; |
| import android.graphics.PixelFormat; |
| import android.os.RemoteException; |
| import android.util.Log; |
| import android.util.Slog; |
| import android.view.Choreographer; |
| import android.view.Display; |
| import android.view.IWindowSession; |
| import android.view.MotionEvent; |
| import android.view.VelocityTracker; |
| import android.view.View; |
| import android.view.ViewRootImpl; |
| import android.view.WindowManager; |
| import android.view.WindowManagerGlobal; |
| import android.view.animation.Transformation; |
| import android.widget.FrameLayout; |
| |
| public class UniverseBackground extends FrameLayout { |
| static final String TAG = "UniverseBackground"; |
| static final boolean SPEW = false; |
| static final boolean CHATTY = false; |
| |
| final IWindowSession mSession; |
| final View mContent; |
| final View mBottomAnchor; |
| |
| final Runnable mAnimationCallback = new Runnable() { |
| @Override |
| public void run() { |
| doAnimation(mChoreographer.getFrameTimeNanos()); |
| } |
| }; |
| |
| // fling gesture tuning parameters, scaled to display density |
| 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") |
| |
| static final int STATE_CLOSED = 0; |
| static final int STATE_OPENING = 1; |
| static final int STATE_OPEN = 2; |
| private int mState = STATE_CLOSED; |
| |
| private float mDragStartX, mDragStartY; |
| private float mAverageX, mAverageY; |
| |
| // position |
| private int[] mPositionTmp = new int[2]; |
| private boolean mExpanded; |
| private boolean mExpandedVisible; |
| |
| private boolean mTracking; |
| private VelocityTracker mVelocityTracker; |
| |
| private Choreographer mChoreographer; |
| private boolean mAnimating; |
| private boolean mClosing; // only valid when mAnimating; indicates the initial acceleration |
| private float mAnimY; |
| private float mAnimVel; |
| private float mAnimAccel; |
| private long mAnimLastTimeNanos; |
| private boolean mAnimatingReveal = false; |
| |
| private int mYDelta = 0; |
| private Transformation mUniverseTransform = new Transformation(); |
| private final float[] mTmpFloats = new float[9]; |
| |
| public UniverseBackground(Context context) { |
| super(context); |
| setBackgroundColor(0xff000000); |
| mSession = WindowManagerGlobal.getWindowSession(context.getMainLooper()); |
| mContent = View.inflate(context, R.layout.universe, null); |
| addView(mContent); |
| mContent.findViewById(R.id.close).setOnClickListener(new View.OnClickListener() { |
| @Override public void onClick(View v) { |
| animateCollapse(); |
| } |
| }); |
| mBottomAnchor = mContent.findViewById(R.id.bottom); |
| mChoreographer = Choreographer.getInstance(); |
| loadDimens(); |
| } |
| |
| @Override |
| protected void onConfigurationChanged(Configuration newConfig) { |
| super.onConfigurationChanged(newConfig); |
| loadDimens(); |
| } |
| |
| 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); |
| } |
| |
| private void computeAveragePos(MotionEvent event) { |
| final int num = event.getPointerCount(); |
| float x = 0, y = 0; |
| for (int i=0; i<num; i++) { |
| x += event.getX(i); |
| y += event.getY(i); |
| } |
| mAverageX = x / num; |
| mAverageY = y / num; |
| } |
| |
| private void sendUniverseTransform() { |
| if (getWindowToken() != null) { |
| mUniverseTransform.getMatrix().getValues(mTmpFloats); |
| try { |
| mSession.setUniverseTransform(getWindowToken(), mUniverseTransform.getAlpha(), |
| mTmpFloats[Matrix.MTRANS_X], mTmpFloats[Matrix.MTRANS_Y], |
| mTmpFloats[Matrix.MSCALE_X], mTmpFloats[Matrix.MSKEW_Y], |
| mTmpFloats[Matrix.MSKEW_X], mTmpFloats[Matrix.MSCALE_Y]); |
| } catch (RemoteException e) { |
| } |
| } |
| } |
| |
| public WindowManager.LayoutParams getLayoutParams() { |
| WindowManager.LayoutParams lp = new WindowManager.LayoutParams( |
| LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, |
| WindowManager.LayoutParams.TYPE_UNIVERSE_BACKGROUND, |
| 0 |
| | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN |
| | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
| | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH, |
| PixelFormat.OPAQUE); |
| // this will allow the window to run in an overlay on devices that support this |
| if (ActivityManager.isHighEndGfx()) { |
| lp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED; |
| } |
| lp.setTitle("UniverseBackground"); |
| lp.windowAnimations = 0; |
| return lp; |
| } |
| |
| private int getExpandedViewMaxHeight() { |
| return mBottomAnchor.getTop(); |
| } |
| |
| public void animateCollapse() { |
| animateCollapse(1.0f); |
| } |
| |
| public void animateCollapse(float velocityMultiplier) { |
| if (SPEW) { |
| Slog.d(TAG, "animateCollapse(): mExpanded=" + mExpanded |
| + " mExpandedVisible=" + mExpandedVisible |
| + " mExpanded=" + mExpanded |
| + " mAnimating=" + mAnimating |
| + " mAnimY=" + mAnimY |
| + " mAnimVel=" + mAnimVel); |
| } |
| |
| mState = STATE_CLOSED; |
| if (!mExpandedVisible) { |
| return; |
| } |
| |
| int y; |
| if (mAnimating) { |
| y = (int)mAnimY; |
| } else { |
| y = getExpandedViewMaxHeight()-1; |
| } |
| // Let the fling think that we're open so it goes in the right direction |
| // and doesn't try to re-open the windowshade. |
| mExpanded = true; |
| prepareTracking(y, false); |
| performFling(y, -mSelfCollapseVelocityPx*velocityMultiplier, true); |
| } |
| |
| private void updateUniverseScale() { |
| if (mYDelta > 0) { |
| int w = getWidth(); |
| int h = getHeight(); |
| float scale = (h-mYDelta+.5f) / (float)h; |
| mUniverseTransform.getMatrix().setScale(scale, scale, w/2, h); |
| if (CHATTY) Log.i(TAG, "w=" + w + " h=" + h + " scale=" + scale |
| + ": " + mUniverseTransform); |
| sendUniverseTransform(); |
| if (getVisibility() != VISIBLE) { |
| setVisibility(VISIBLE); |
| } |
| } else { |
| if (CHATTY) Log.i(TAG, "mYDelta=" + mYDelta); |
| mUniverseTransform.clear(); |
| sendUniverseTransform(); |
| if (getVisibility() == VISIBLE) { |
| setVisibility(GONE); |
| } |
| } |
| } |
| |
| void resetLastAnimTime() { |
| mAnimLastTimeNanos = System.nanoTime(); |
| if (SPEW) { |
| Throwable t = new Throwable(); |
| t.fillInStackTrace(); |
| Slog.d(TAG, "resetting last anim time=" + mAnimLastTimeNanos, t); |
| } |
| } |
| |
| void doAnimation(long frameTimeNanos) { |
| if (mAnimating) { |
| if (SPEW) Slog.d(TAG, "doAnimation dt=" + (frameTimeNanos - mAnimLastTimeNanos)); |
| if (SPEW) Slog.d(TAG, "doAnimation before mAnimY=" + mAnimY); |
| incrementAnim(frameTimeNanos); |
| if (SPEW) { |
| Slog.d(TAG, "doAnimation after mAnimY=" + mAnimY); |
| } |
| |
| if (mAnimY >= getExpandedViewMaxHeight()-1 && !mClosing) { |
| if (SPEW) Slog.d(TAG, "Animation completed to expanded state."); |
| mAnimating = false; |
| mYDelta = getExpandedViewMaxHeight(); |
| updateUniverseScale(); |
| mExpanded = true; |
| mState = STATE_OPEN; |
| return; |
| } |
| |
| if (mAnimY <= 0 && mClosing) { |
| if (SPEW) Slog.d(TAG, "Animation completed to collapsed state."); |
| mAnimating = false; |
| mYDelta = 0; |
| updateUniverseScale(); |
| mExpanded = false; |
| mState = STATE_CLOSED; |
| return; |
| } |
| |
| mYDelta = (int)mAnimY; |
| updateUniverseScale(); |
| mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, |
| mAnimationCallback, null); |
| } |
| } |
| |
| void stopTracking() { |
| mTracking = false; |
| mVelocityTracker.recycle(); |
| mVelocityTracker = null; |
| } |
| |
| void incrementAnim(long frameTimeNanos) { |
| final long deltaNanos = Math.max(frameTimeNanos - mAnimLastTimeNanos, 0); |
| final float t = deltaNanos * 0.000000001f; // ns -> s |
| final float y = mAnimY; |
| final float v = mAnimVel; // px/s |
| final float a = mAnimAccel; // px/s/s |
| mAnimY = y + (v*t) + (0.5f*a*t*t); // px |
| mAnimVel = v + (a*t); // px/s |
| mAnimLastTimeNanos = frameTimeNanos; // ns |
| //Slog.d(TAG, "y=" + y + " v=" + v + " a=" + a + " t=" + t + " mAnimY=" + mAnimY |
| // + " mAnimAccel=" + mAnimAccel); |
| } |
| |
| void prepareTracking(int y, boolean opening) { |
| if (CHATTY) { |
| Slog.d(TAG, "panel: beginning to track the user's touch, y=" + y + " opening=" + opening); |
| } |
| |
| mTracking = true; |
| mVelocityTracker = VelocityTracker.obtain(); |
| if (opening) { |
| mAnimAccel = mExpandAccelPx; |
| mAnimVel = mFlingExpandMinVelocityPx; |
| mAnimY = y; |
| mAnimating = true; |
| mAnimatingReveal = true; |
| resetLastAnimTime(); |
| mExpandedVisible = true; |
| } |
| if (mAnimating) { |
| mAnimating = false; |
| mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, |
| mAnimationCallback, null); |
| } |
| } |
| |
| void performFling(int y, float vel, boolean always) { |
| if (CHATTY) { |
| Slog.d(TAG, "panel: will fling, y=" + y + " vel=" + vel); |
| } |
| |
| mAnimatingReveal = false; |
| |
| mAnimY = y; |
| mAnimVel = vel; |
| |
| //Slog.d(TAG, "starting with mAnimY=" + mAnimY + " mAnimVel=" + mAnimVel); |
| |
| if (mExpanded) { |
| if (!always && ( |
| vel > mFlingCollapseMinVelocityPx |
| || (y > (getExpandedViewMaxHeight()*(1f-mCollapseMinDisplayFraction)) && |
| vel > -mFlingExpandMinVelocityPx))) { |
| // We are expanded, but they didn't move sufficiently to cause |
| // us to retract. Animate back to the expanded position. |
| mAnimAccel = mExpandAccelPx; |
| if (vel < 0) { |
| mAnimVel = 0; |
| } |
| } |
| else { |
| // We are expanded and are now going to animate away. |
| mAnimAccel = -mCollapseAccelPx; |
| if (vel > 0) { |
| mAnimVel = 0; |
| } |
| } |
| } else { |
| if (always || ( |
| vel > mFlingExpandMinVelocityPx |
| || (y > (getExpandedViewMaxHeight()*(1f-mExpandMinDisplayFraction)) && |
| vel > -mFlingCollapseMinVelocityPx))) { |
| // We are collapsed, and they moved enough to allow us to |
| // expand. Animate in the notifications. |
| mAnimAccel = mExpandAccelPx; |
| if (vel < 0) { |
| mAnimVel = 0; |
| } |
| } |
| else { |
| // We are collapsed, but they didn't move sufficiently to cause |
| // us to retract. Animate back to the collapsed position. |
| mAnimAccel = -mCollapseAccelPx; |
| if (vel > 0) { |
| mAnimVel = 0; |
| } |
| } |
| } |
| //Slog.d(TAG, "mAnimY=" + mAnimY + " mAnimVel=" + mAnimVel |
| // + " mAnimAccel=" + mAnimAccel); |
| |
| resetLastAnimTime(); |
| mAnimating = true; |
| mClosing = mAnimAccel < 0; |
| mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, |
| mAnimationCallback, null); |
| mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, |
| mAnimationCallback, null); |
| |
| stopTracking(); |
| } |
| |
| private void trackMovement(MotionEvent event) { |
| mVelocityTracker.addMovement(event); |
| } |
| |
| public boolean consumeEvent(MotionEvent event) { |
| if (mState == STATE_CLOSED) { |
| if (event.getActionMasked() == MotionEvent.ACTION_POINTER_DOWN) { |
| // Second finger down, time to start opening! |
| computeAveragePos(event); |
| mDragStartX = mAverageX; |
| mDragStartY = mAverageY; |
| mYDelta = 0; |
| mUniverseTransform.clear(); |
| sendUniverseTransform(); |
| setVisibility(VISIBLE); |
| mState = STATE_OPENING; |
| prepareTracking((int)mDragStartY, true); |
| mVelocityTracker.clear(); |
| trackMovement(event); |
| return true; |
| } |
| return false; |
| } |
| |
| if (mState == STATE_OPENING) { |
| if (event.getActionMasked() == MotionEvent.ACTION_UP |
| || event.getActionMasked() == MotionEvent.ACTION_CANCEL) { |
| mVelocityTracker.computeCurrentVelocity(1000); |
| computeAveragePos(event); |
| |
| 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 (negative) { |
| vel = -vel; |
| } |
| |
| if (CHATTY) { |
| Slog.d(TAG, String.format("gesture: vraw=(%f,%f) vnorm=(%f,%f) vlinear=%f", |
| mVelocityTracker.getXVelocity(), |
| mVelocityTracker.getYVelocity(), |
| xVel, yVel, |
| vel)); |
| } |
| |
| performFling((int)mAverageY, vel, false); |
| mState = STATE_OPEN; |
| return true; |
| } |
| |
| computeAveragePos(event); |
| mYDelta = (int)(mAverageY - mDragStartY); |
| if (mYDelta > getExpandedViewMaxHeight()) { |
| mYDelta = getExpandedViewMaxHeight(); |
| } |
| updateUniverseScale(); |
| return true; |
| } |
| |
| return false; |
| } |
| } |