コード例 #1
0
		private void setContext(android.view.MotionEvent curr)
		{
			if (mCurrEvent != null)
			{
				mCurrEvent.recycle();
			}
			mCurrEvent = android.view.MotionEvent.obtain(curr);
			mCurrLen = -1;
			mPrevLen = -1;
			mScaleFactor = -1;
			android.view.MotionEvent prev = mPrevEvent;
			int prevIndex0 = prev.findPointerIndex(mActiveId0);
			int prevIndex1 = prev.findPointerIndex(mActiveId1);
			int currIndex0 = curr.findPointerIndex(mActiveId0);
			int currIndex1 = curr.findPointerIndex(mActiveId1);
			if (prevIndex0 < 0 || prevIndex1 < 0 || currIndex0 < 0 || currIndex1 < 0)
			{
				mInvalidGesture = true;
				android.util.Log.e(TAG, "Invalid MotionEvent stream detected.", new System.Exception
					());
				if (mGestureInProgress)
				{
					mListener.onScaleEnd(this);
				}
				return;
			}
			float px0 = prev.getX(prevIndex0);
			float py0 = prev.getY(prevIndex0);
			float px1 = prev.getX(prevIndex1);
			float py1 = prev.getY(prevIndex1);
			float cx0 = curr.getX(currIndex0);
			float cy0 = curr.getY(currIndex0);
			float cx1 = curr.getX(currIndex1);
			float cy1 = curr.getY(currIndex1);
			float pvx = px1 - px0;
			float pvy = py1 - py0;
			float cvx = cx1 - cx0;
			float cvy = cy1 - cy0;
			mPrevFingerDiffX = pvx;
			mPrevFingerDiffY = pvy;
			mCurrFingerDiffX = cvx;
			mCurrFingerDiffY = cvy;
			mFocusX = cx0 + cvx * 0.5f;
			mFocusY = cy0 + cvy * 0.5f;
			mTimeDelta = curr.getEventTime() - prev.getEventTime();
			mCurrPressure = curr.getPressure(currIndex0) + curr.getPressure(currIndex1);
			mPrevPressure = prev.getPressure(prevIndex0) + prev.getPressure(prevIndex1);
		}
コード例 #2
0
ファイル: GestureDetector.cs プロジェクト: hakeemsm/XobotOS
		private bool isConsideredDoubleTap(android.view.MotionEvent firstDown, android.view.MotionEvent
			 firstUp, android.view.MotionEvent secondDown)
		{
			if (!mAlwaysInBiggerTapRegion)
			{
				return false;
			}
			if (secondDown.getEventTime() - firstUp.getEventTime() > DOUBLE_TAP_TIMEOUT)
			{
				return false;
			}
			int deltaX = (int)firstDown.getX() - (int)secondDown.getX();
			int deltaY = (int)firstDown.getY() - (int)secondDown.getY();
			return (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare);
		}