diff options
Diffstat (limited to 'packages/SystemUI/src/com/android/systemui/SwipeHelper.java')
| -rw-r--r-- | packages/SystemUI/src/com/android/systemui/SwipeHelper.java | 98 |
1 files changed, 97 insertions, 1 deletions
diff --git a/packages/SystemUI/src/com/android/systemui/SwipeHelper.java b/packages/SystemUI/src/com/android/systemui/SwipeHelper.java index 33f6564..c3e5043 100644 --- a/packages/SystemUI/src/com/android/systemui/SwipeHelper.java +++ b/packages/SystemUI/src/com/android/systemui/SwipeHelper.java @@ -45,9 +45,15 @@ public class SwipeHelper implements Gefingerpoken { public static final int X = 0; public static final int Y = 1; + public static final int SWIPE_ZONE_LEFT = 0x1; + public static final int SWIPE_ZONE_RIGHT = 0x2; + public static final int SWIPE_ZONE_TOP = 0x4; + public static final int SWIPE_ZONE_BOTTOM = 0x8; private static LinearInterpolator sLinearInterpolator = new LinearInterpolator(); private final Interpolator mFastOutLinearInInterpolator; + private final int mTouchSlop; + private int mSwipeZone; private float SWIPE_ESCAPE_VELOCITY = 100f; // dp/sec private int DEFAULT_ESCAPE_ANIMATION_DURATION = 200; // ms @@ -69,6 +75,7 @@ public class SwipeHelper implements Gefingerpoken { private VelocityTracker mVelocityTracker; private float mInitialTouchPos; + private float mPerpendicularInitialTouchPos; private boolean mDragging; private View mCurrView; private View mCurrAnimView; @@ -84,6 +91,8 @@ public class SwipeHelper implements Gefingerpoken { private int mFalsingThreshold; private boolean mTouchAboveFalsingThreshold; + private float mSwipeProgressFadeEnd; + public SwipeHelper(int swipeDirection, Callback callback, Context context) { mCallback = callback; mHandler = new Handler(); @@ -91,12 +100,28 @@ public class SwipeHelper implements Gefingerpoken { mVelocityTracker = VelocityTracker.obtain(); mDensityScale = context.getResources().getDisplayMetrics().density; mPagingTouchSlop = ViewConfiguration.get(context).getScaledPagingTouchSlop(); + mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop(); mLongPressTimeout = (long) (ViewConfiguration.getLongPressTimeout() * 1.5f); // extra long-press! mFastOutLinearInInterpolator = AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_linear_in); mFalsingThreshold = context.getResources().getDimensionPixelSize( R.dimen.swipe_helper_falsing_threshold); + if (swipeDirection == X) { + mSwipeZone = SWIPE_ZONE_LEFT | SWIPE_ZONE_RIGHT; + } else { + mSwipeZone = SWIPE_ZONE_TOP | SWIPE_ZONE_BOTTOM; + } + mSwipeProgressFadeEnd = SWIPE_PROGRESS_FADE_END; + } + + public SwipeHelper(int swipeDirection, int swipeZone, Callback callback, Context context) { + this(swipeDirection, callback, context); + mSwipeZone = swipeZone; + } + + public boolean isDragging() { + return mDragging; } public void setLongPressListener(LongPressListener listener) { @@ -115,6 +140,10 @@ public class SwipeHelper implements Gefingerpoken { return mSwipeDirection == X ? ev.getX() : ev.getY(); } + private float getPerpendicularPos(MotionEvent ev) { + return mSwipeDirection == X ? ev.getY() : ev.getX(); + } + private float getTranslation(View v) { return mSwipeDirection == X ? v.getTranslationX() : v.getTranslationY(); } @@ -158,7 +187,7 @@ public class SwipeHelper implements Gefingerpoken { private float getSwipeProgressForOffset(View view) { float viewSize = getSize(view); - final float fadeSize = SWIPE_PROGRESS_FADE_END * viewSize; + final float fadeSize = mSwipeProgressFadeEnd * viewSize; float result = 1.0f; float pos = getTranslation(view); if (pos >= viewSize * SWIPE_PROGRESS_FADE_START) { @@ -236,6 +265,7 @@ public class SwipeHelper implements Gefingerpoken { mCanCurrViewBeDimissed = mCallback.canChildBeDismissed(mCurrView); mVelocityTracker.addMovement(ev); mInitialTouchPos = getPos(ev); + mPerpendicularInitialTouchPos = getPerpendicularPos(ev); if (mLongPressListener != null) { if (mWatchLongPress == null) { @@ -413,11 +443,30 @@ public class SwipeHelper implements Gefingerpoken { case MotionEvent.ACTION_OUTSIDE: case MotionEvent.ACTION_MOVE: if (mCurrView != null) { + float pos = getPos(ev); + float altPos = getPerpendicularPos(ev); float delta = getPos(ev) - mInitialTouchPos; float absDelta = Math.abs(delta); if (absDelta >= getFalsingThreshold()) { mTouchAboveFalsingThreshold = true; } + + boolean touchBeyondZoneLimit = true; + if (mSwipeDirection == X) { + if ((mSwipeZone & SWIPE_ZONE_RIGHT) == 0 && pos > mInitialTouchPos) { + touchBeyondZoneLimit = false; + } else if ((mSwipeZone & SWIPE_ZONE_LEFT) == 0 && pos < mInitialTouchPos) { + touchBeyondZoneLimit = false; + } + } else { + if ((mSwipeZone & SWIPE_ZONE_TOP) == 0 && altPos < mPerpendicularInitialTouchPos) { + touchBeyondZoneLimit = false; + } else if ((mSwipeZone & SWIPE_ZONE_BOTTOM) == 0 && pos > mInitialTouchPos) { + touchBeyondZoneLimit = false; + } + } + if (!touchBeyondZoneLimit) return false; + // don't let items that can't be dismissed be dragged more than // maxScrollDistance if (CONSTRAIN_SWIPE && !mCallback.canChildBeDismissed(mCurrView)) { @@ -470,6 +519,10 @@ public class SwipeHelper implements Gefingerpoken { return true; } + public void setSwipeProgressFadeEnd(float end) { + mSwipeProgressFadeEnd = end; + } + private int getFalsingThreshold() { float factor = mCallback.getFalsingThresholdFactor(); return (int) (mFalsingThreshold * factor); @@ -505,6 +558,49 @@ public class SwipeHelper implements Gefingerpoken { float getFalsingThresholdFactor(); } + public static abstract class SimpleCallback implements Callback { + public abstract View getChildAtPosition(MotionEvent ev); + public abstract View getChildContentView(View v); + + @Override + public boolean canChildBeDismissed(View v) { + return false; + } + + @Override + public boolean isAntiFalsingNeeded() { + return false; + } + + @Override + public void onBeginDrag(View v) { + } + + @Override + public void onChildDismissed(View v) { + } + + @Override + public void onDragCancelled(View v) { + } + + @Override + public void onChildSnappedBack(View animView) { + } + + @Override + public boolean updateSwipeProgress(View animView, + boolean dismissable, + float swipeProgress) { + return false; + } + + @Override + public float getFalsingThresholdFactor() { + return 0; + } + } + /** * Equivalent to View.OnLongClickListener with coordinates */ |