C# MotionEvent.GetOrientation方法代码示例

			bool OnTouchOrHoverEvent (MotionEvent e, bool isTouch)
			{
				MotionEventButtonState buttonState = e.ButtonState;
				MotionEventButtonState pressedButtons = buttonState & ~mOldButtonState;
				mOldButtonState = buttonState;

				if ((pressedButtons & MotionEventButtonState.Secondary) != 0) {
					// Advance color when the right mouse button or first stylus button
					// is pressed.
					AdvanceColor ();
				}

				PaintMode mode;
				if ((buttonState & MotionEventButtonState.Tertiary) != 0) {
					// Splat paint when the middle mouse button or second stylus button is pressed.
					mode = PaintMode.Splat;
				} else if (isTouch || (buttonState & MotionEventButtonState.Primary) != 0) {
					// Draw paint when touching or if the primary button is pressed.
					mode = PaintMode.Draw;
				} else {
					// Otherwise, do not paint anything.
					return false;
				}

				MotionEventActions action = e.ActionMasked;
				if (action ==  MotionEventActions.Down || action == MotionEventActions.Move
					|| action == MotionEventActions.HoverMove) {
					int N = e.HistorySize;
					int P = e.PointerCount;
					for (int i = 0; i < N; i++) {
						for (int j = 0; j < P; j++) {
							Paint (GetPaintModeForTool (e.GetToolType (j), mode),
								e.GetHistoricalX (j, i),
								e.GetHistoricalY(j, i),
								e.GetHistoricalPressure (j, i),
								e.GetHistoricalTouchMajor (j, i),
								e.GetHistoricalTouchMinor (j, i),
								e.GetHistoricalOrientation (j, i),
								e.GetHistoricalAxisValue (Axis.Distance, j, i),
								e.GetHistoricalAxisValue (Axis.Tilt, j, i));
						}
					}
					for (int j = 0; j < P; j++) {
						Paint (GetPaintModeForTool (e.GetToolType (j), mode),
							e.GetX (j),
							e.GetY (j),
							e.GetPressure (j),
							e.GetTouchMajor (j),
							e.GetTouchMinor (j),
							e.GetOrientation (j),
							e.GetAxisValue (Axis.Distance, j),
							e.GetAxisValue (Axis.Tilt, j));
					}
					mCurX = e.GetX ();
					mCurY = e.GetY ();
				}
				return true;
			}