C# android.getSource方法代码示例

		/// <summary>Checks a generic motion event.</summary>
		/// <remarks>Checks a generic motion event.</remarks>
		/// <param name="event">The event.</param>
		/// <param name="nestingLevel">
		/// The nesting level: 0 if called from the base class,
		/// or 1 from a subclass.  If the event was already checked by this consistency verifier
		/// at a higher nesting level, it will not be checked again.  Used to handle the situation
		/// where a subclass dispatching method delegates to its superclass's dispatching method
		/// and both dispatching methods call into the consistency verifier.
		/// </param>
		public void onGenericMotionEvent(android.view.MotionEvent @event, int nestingLevel
			)
		{
			if (!startEvent(@event, nestingLevel, EVENT_TYPE_GENERIC_MOTION))
			{
				return;
			}
			try
			{
				ensureMetaStateIsNormalized(@event.getMetaState());
				int action = @event.getAction();
				int source = @event.getSource();
				if ((source & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
				{
					switch (action)
					{
						case android.view.MotionEvent.ACTION_HOVER_ENTER:
						{
							ensurePointerCountIsOneForThisAction(@event);
							mHoverEntered = true;
							break;
						}

						case android.view.MotionEvent.ACTION_HOVER_MOVE:
						{
							ensurePointerCountIsOneForThisAction(@event);
							break;
						}

						case android.view.MotionEvent.ACTION_HOVER_EXIT:
						{
							ensurePointerCountIsOneForThisAction(@event);
							if (!mHoverEntered)
							{
								problem("ACTION_HOVER_EXIT without prior ACTION_HOVER_ENTER");
							}
							mHoverEntered = false;
							break;
						}

						case android.view.MotionEvent.ACTION_SCROLL:
						{
							ensureHistorySizeIsZeroForThisAction(@event);
							ensurePointerCountIsOneForThisAction(@event);
							break;
						}

						default:
						{
							problem("Invalid action for generic pointer event.");
							break;
						}
					}
				}
				else
				{
					if ((source & android.view.InputDevice.SOURCE_CLASS_JOYSTICK) != 0)
					{
						switch (action)
						{
							case android.view.MotionEvent.ACTION_MOVE:
							{
								ensurePointerCountIsOneForThisAction(@event);
								break;
							}

							default:
							{
								problem("Invalid action for generic joystick event.");
								break;
							}
						}
					}
				}
			}
			finally
			{
				finishEvent();
			}
		}

		/// <summary>Checks a trackball event.</summary>
		/// <remarks>Checks a trackball event.</remarks>
		/// <param name="event">The event.</param>
		/// <param name="nestingLevel">
		/// The nesting level: 0 if called from the base class,
		/// or 1 from a subclass.  If the event was already checked by this consistency verifier
		/// at a higher nesting level, it will not be checked again.  Used to handle the situation
		/// where a subclass dispatching method delegates to its superclass's dispatching method
		/// and both dispatching methods call into the consistency verifier.
		/// </param>
		public void onTrackballEvent(android.view.MotionEvent @event, int nestingLevel)
		{
			if (!startEvent(@event, nestingLevel, EVENT_TYPE_TRACKBALL))
			{
				return;
			}
			try
			{
				ensureMetaStateIsNormalized(@event.getMetaState());
				int action = @event.getAction();
				int source = @event.getSource();
				if ((source & android.view.InputDevice.SOURCE_CLASS_TRACKBALL) != 0)
				{
					switch (action)
					{
						case android.view.MotionEvent.ACTION_DOWN:
						{
							if (mTrackballDown && !mTrackballUnhandled)
							{
								problem("ACTION_DOWN but trackball is already down.");
							}
							else
							{
								mTrackballDown = true;
								mTrackballUnhandled = false;
							}
							ensureHistorySizeIsZeroForThisAction(@event);
							ensurePointerCountIsOneForThisAction(@event);
							break;
						}

						case android.view.MotionEvent.ACTION_UP:
						{
							if (!mTrackballDown)
							{
								problem("ACTION_UP but trackball is not down.");
							}
							else
							{
								mTrackballDown = false;
								mTrackballUnhandled = false;
							}
							ensureHistorySizeIsZeroForThisAction(@event);
							ensurePointerCountIsOneForThisAction(@event);
							break;
						}

						case android.view.MotionEvent.ACTION_MOVE:
						{
							ensurePointerCountIsOneForThisAction(@event);
							break;
						}

						default:
						{
							problem("Invalid action " + android.view.MotionEvent.actionToString(action) + " for trackball event."
								);
							break;
						}
					}
					if (mTrackballDown && @event.getPressure() <= 0)
					{
						problem("Trackball is down but pressure is not greater than 0.");
					}
					else
					{
						if (!mTrackballDown && @event.getPressure() != 0)
						{
							problem("Trackball is up but pressure is not equal to 0.");
						}
					}
				}
				else
				{
					problem("Source was not SOURCE_CLASS_TRACKBALL.");
				}
			}
			finally
			{
				finishEvent();
			}
		}

		/// <summary>Checks a touch event.</summary>
		/// <remarks>Checks a touch event.</remarks>
		/// <param name="event">The event.</param>
		/// <param name="nestingLevel">
		/// The nesting level: 0 if called from the base class,
		/// or 1 from a subclass.  If the event was already checked by this consistency verifier
		/// at a higher nesting level, it will not be checked again.  Used to handle the situation
		/// where a subclass dispatching method delegates to its superclass's dispatching method
		/// and both dispatching methods call into the consistency verifier.
		/// </param>
		public void onTouchEvent(android.view.MotionEvent @event, int nestingLevel)
		{
			if (!startEvent(@event, nestingLevel, EVENT_TYPE_TOUCH))
			{
				return;
			}
			int action = @event.getAction();
			bool newStream = action == android.view.MotionEvent.ACTION_DOWN || action == android.view.MotionEvent
				.ACTION_CANCEL;
			if (newStream && (mTouchEventStreamIsTainted || mTouchEventStreamUnhandled))
			{
				mTouchEventStreamIsTainted = false;
				mTouchEventStreamUnhandled = false;
				mTouchEventStreamPointers = 0;
			}
			if (mTouchEventStreamIsTainted)
			{
				@event.setTainted(true);
			}
			try
			{
				ensureMetaStateIsNormalized(@event.getMetaState());
				int deviceId = @event.getDeviceId();
				int source = @event.getSource();
				if (!newStream && mTouchEventStreamDeviceId != -1 && (mTouchEventStreamDeviceId !=
					 deviceId || mTouchEventStreamSource != source))
				{
					problem("Touch event stream contains events from multiple sources: " + "previous device id "
						 + mTouchEventStreamDeviceId + ", previous source " + Sharpen.Util.IntToHexString
						(mTouchEventStreamSource) + ", new device id " + deviceId + ", new source " + Sharpen.Util.IntToHexString
						(source));
				}
				mTouchEventStreamDeviceId = deviceId;
				mTouchEventStreamSource = source;
				int pointerCount = @event.getPointerCount();
				if ((source & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
				{
					switch (action)
					{
						case android.view.MotionEvent.ACTION_DOWN:
						{
							if (mTouchEventStreamPointers != 0)
							{
								problem("ACTION_DOWN but pointers are already down.  " + "Probably missing ACTION_UP from previous gesture."
									);
							}
							ensureHistorySizeIsZeroForThisAction(@event);
							ensurePointerCountIsOneForThisAction(@event);
							mTouchEventStreamPointers = 1 << @event.getPointerId(0);
							break;
						}

						case android.view.MotionEvent.ACTION_UP:
						{
							ensureHistorySizeIsZeroForThisAction(@event);
							ensurePointerCountIsOneForThisAction(@event);
							mTouchEventStreamPointers = 0;
							mTouchEventStreamIsTainted = false;
							break;
						}

						case android.view.MotionEvent.ACTION_MOVE:
						{
							int expectedPointerCount = Sharpen.Util.IntGetBitCount(mTouchEventStreamPointers);
							if (pointerCount != expectedPointerCount)
							{
								problem("ACTION_MOVE contained " + pointerCount + " pointers but there are currently "
									 + expectedPointerCount + " pointers down.");
								mTouchEventStreamIsTainted = true;
							}
							break;
						}

						case android.view.MotionEvent.ACTION_CANCEL:
						{
							mTouchEventStreamPointers = 0;
							mTouchEventStreamIsTainted = false;
							break;
						}

						case android.view.MotionEvent.ACTION_OUTSIDE:
						{
							if (mTouchEventStreamPointers != 0)
							{
								problem("ACTION_OUTSIDE but pointers are still down.");
							}
							ensureHistorySizeIsZeroForThisAction(@event);
							ensurePointerCountIsOneForThisAction(@event);
							mTouchEventStreamIsTainted = false;
							break;
//.........这里部分代码省略.........

		/// <summary>Checks a key event.</summary>
		/// <remarks>Checks a key event.</remarks>
		/// <param name="event">The event.</param>
		/// <param name="nestingLevel">
		/// The nesting level: 0 if called from the base class,
		/// or 1 from a subclass.  If the event was already checked by this consistency verifier
		/// at a higher nesting level, it will not be checked again.  Used to handle the situation
		/// where a subclass dispatching method delegates to its superclass's dispatching method
		/// and both dispatching methods call into the consistency verifier.
		/// </param>
		public void onKeyEvent(android.view.KeyEvent @event, int nestingLevel)
		{
			if (!startEvent(@event, nestingLevel, EVENT_TYPE_KEY))
			{
				return;
			}
			try
			{
				ensureMetaStateIsNormalized(@event.getMetaState());
				int action = @event.getAction();
				int deviceId = @event.getDeviceId();
				int source = @event.getSource();
				int keyCode = @event.getKeyCode();
				switch (action)
				{
					case android.view.KeyEvent.ACTION_DOWN:
					{
						android.view.InputEventConsistencyVerifier.KeyState state = findKeyState(deviceId
							, source, keyCode, false);
						if (state != null)
						{
							// If the key is already down, ensure it is a repeat.
							// We don't perform this check when processing raw device input
							// because the input dispatcher itself is responsible for setting
							// the key repeat count before it delivers input events.
							if (state.unhandled)
							{
								state.unhandled = false;
							}
							else
							{
								if ((mFlags & FLAG_RAW_DEVICE_INPUT) == 0 && @event.getRepeatCount() == 0)
								{
									problem("ACTION_DOWN but key is already down and this event " + "is not a key repeat."
										);
								}
							}
						}
						else
						{
							addKeyState(deviceId, source, keyCode);
						}
						break;
					}

					case android.view.KeyEvent.ACTION_UP:
					{
						android.view.InputEventConsistencyVerifier.KeyState state = findKeyState(deviceId
							, source, keyCode, true);
						if (state == null)
						{
							problem("ACTION_UP but key was not down.");
						}
						else
						{
							state.recycle();
						}
						break;
					}

					case android.view.KeyEvent.ACTION_MULTIPLE:
					{
						break;
					}

					default:
					{
						problem("Invalid action " + android.view.KeyEvent.actionToString(action) + " for key event."
							);
						break;
					}
				}
			}
			finally
			{
				finishEvent();
			}
		}

		public override bool onGenericMotionEvent(android.view.MotionEvent @event)
		{
			if ((@event.getSource() & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
			{
				switch (@event.getAction())
				{
					case android.view.MotionEvent.ACTION_SCROLL:
					{
						if (!mIsBeingDragged)
						{
							float hscroll;
							if ((@event.getMetaState() & android.view.KeyEvent.META_SHIFT_ON) != 0)
							{
								hscroll = [email protected](android.view.MotionEvent.AXIS_VSCROLL);
							}
							else
							{
								hscroll = @event.getAxisValue(android.view.MotionEvent.AXIS_HSCROLL);
							}
							if (hscroll != 0)
							{
								int delta = (int)(hscroll * getHorizontalScrollFactor());
								int range = getScrollRange();
								int oldScrollX = mScrollX;
								int newScrollX = oldScrollX + delta;
								if (newScrollX < 0)
								{
									newScrollX = 0;
								}
								else
								{
									if (newScrollX > range)
									{
										newScrollX = range;
									}
								}
								if (newScrollX != oldScrollX)
								{
									base.scrollTo(newScrollX, mScrollY);
									return true;
								}
							}
						}
						break;
					}
				}
			}
			return base.onGenericMotionEvent(@event);
		}

		public override bool onGenericMotionEvent(android.view.MotionEvent @event)
		{
			if ((@event.getSource() & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
			{
				switch (@event.getAction())
				{
					case android.view.MotionEvent.ACTION_SCROLL:
					{
						float vscroll = @event.getAxisValue(android.view.MotionEvent.AXIS_VSCROLL);
						if (vscroll < 0)
						{
							pacedScroll(false);
							return true;
						}
						else
						{
							if (vscroll > 0)
							{
								pacedScroll(true);
								return true;
							}
						}
						break;
					}
				}
			}
			return base.onGenericMotionEvent(@event);
		}

		public override bool onGenericMotionEvent(android.view.MotionEvent @event)
		{
			if ((@event.getSource() & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
			{
				switch (@event.getAction())
				{
					case android.view.MotionEvent.ACTION_SCROLL:
					{
						if (!mIsBeingDragged)
						{
							float vscroll = @event.getAxisValue(android.view.MotionEvent.AXIS_VSCROLL);
							if (vscroll != 0)
							{
								int delta = (int)(vscroll * getVerticalScrollFactor());
								int range = getScrollRange();
								int oldScrollY = mScrollY;
								int newScrollY = oldScrollY - delta;
								if (newScrollY < 0)
								{
									newScrollY = 0;
								}
								else
								{
									if (newScrollY > range)
									{
										newScrollY = range;
									}
								}
								if (newScrollY != oldScrollY)
								{
									base.scrollTo(mScrollX, newScrollY);
									return true;
								}
							}
						}
						break;
					}
				}
			}
			return base.onGenericMotionEvent(@event);
		}

		public virtual bool onGenericMotionEvent(android.widget.TextView widget, android.text.Spannable
			 text, android.view.MotionEvent @event)
		{
			if ((@event.getSource() & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
			{
				switch (@event.getAction())
				{
					case android.view.MotionEvent.ACTION_SCROLL:
					{
						float vscroll;
						float hscroll;
						if ((@event.getMetaState() & android.view.KeyEvent.META_SHIFT_ON) != 0)
						{
							vscroll = 0;
							hscroll = @event.getAxisValue(android.view.MotionEvent.AXIS_VSCROLL);
						}
						else
						{
							vscroll = [email protected](android.view.MotionEvent.AXIS_VSCROLL);
							hscroll = @event.getAxisValue(android.view.MotionEvent.AXIS_HSCROLL);
						}
						bool handled = false;
						if (hscroll < 0)
						{
							handled |= scrollLeft(widget, text, (int)System.Math.Ceiling(-hscroll));
						}
						else
						{
							if (hscroll > 0)
							{
								handled |= scrollRight(widget, text, (int)System.Math.Ceiling(hscroll));
							}
						}
						if (vscroll < 0)
						{
							handled |= scrollUp(widget, text, (int)System.Math.Ceiling(-vscroll));
						}
						else
						{
							if (vscroll > 0)
							{
								handled |= scrollDown(widget, text, (int)System.Math.Ceiling(vscroll));
							}
						}
						return handled;
					}
				}
			}
			return false;
		}