仿Win8的磁貼效果

仿win8的磁貼效果

package com.dreamlive.testrolatea;

import android.content.Context;
import android.graphics.Camera;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.drawable.BitmapDrawable;
import android.os.Handler;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ImageView;

/**
 * 自定義ImageView
 * 
 * @author dreamlive
 * 
 */
public class MyImageView1 extends ImageView {

	private boolean onAnimation = true;
	private int rotateDegree = 10;
	private boolean isFirst = true;
	private float minScale = 0.95f;
	private int vWidth;
	private int vHeight;
	private boolean isFinish = true, isActionMove = false, isScale = false;
	private Camera camera;
	boolean XBigY = false;
	float RolateX = 0;
	float RolateY = 0;
	OnViewClick onclick = null;

	public MyImageView1(Context context) {
		super(context);
		camera = new Camera();
	}

	public MyImageView1(Context context, AttributeSet attrs) {
		super(context, attrs);
		camera = new Camera();
	}

	public MyImageView1(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		camera = new Camera();
	}

	public void SetAnimationOnOff(boolean isAnimation) {
		onAnimation = isAnimation;
	}

	public void setOnClickIntent(OnViewClick onclick) {
		this.onclick = onclick;
	}

	@Override
	protected void onDraw(Canvas canvas) {
		super.onDraw(canvas);
		if (isFirst) {
			isFirst = false;
			init();
		}
		canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG
				| Paint.FILTER_BITMAP_FLAG));
	}

	public void init() {
		vWidth = getWidth() - getPaddingLeft() - getPaddingRight();
		vHeight = getHeight() - getPaddingTop() - getPaddingBottom();
		BitmapDrawable bd = (BitmapDrawable) getDrawable();
		bd.setAntiAlias(true);
	}

	@Override
	public boolean onTouchEvent(MotionEvent event) {
		if (!onAnimation) {
			return true;
		}
		switch (event.getAction() & MotionEvent.ACTION_MASK) {
		case MotionEvent.ACTION_DOWN:
			float x = event.getX();
			float y = event.getY();
			RolateX = vWidth / 2 - x;
			RolateY -= vHeight / 2 - y;
			XBigY = Math.abs(RolateX) > Math.abs(RolateY) ? true : false;

			isScale = x > vWidth / 3 && x < vWidth * 2 / 3 && y > vHeight / 3
					&& y < vHeight * 2 / 3;
			isActionMove = false;
			if (isScale) {
				handler.sendEmptyMessage(1);
			} else {
				rolateHandler.sendEmptyMessage(1);
			}
			break;
		case MotionEvent.ACTION_MOVE:
			float x1 = event.getX();
			float y1 = event.getY();
			if (x1 > vWidth || y1 > vHeight || x1 < 0 || y1 < 0) {
				isActionMove = true;
			} else {
				isActionMove = false;
			}
			break;
		case MotionEvent.ACTION_UP:
			if (isScale) {
				handler.sendEmptyMessage(6);
			} else {
				rolateHandler.sendEmptyMessage(6);
			}
			break;
		default:
			break;
		}
		return true;
	}
	public interface OnViewClick {
		public void onClick();
	}
	

	private Handler rolateHandler = new Handler() {
		private Matrix matrix = new Matrix();
		private float count = 0;

		public void handleMessage(android.os.Message msg) {
			matrix.set(getImageMatrix());
			switch (msg.what) {
			case 1:
				count = 0;
				BeginRolate(matrix, (XBigY ? count : 0), (XBigY ? 0 : count));
				rolateHandler.sendEmptyMessage(2);
				break;
			case 2:
				BeginRolate(matrix, (XBigY ? count : 0), (XBigY ? 0 : count));
				if (count < getDegree()) {
					rolateHandler.sendEmptyMessage(2);
				} else {
					isFinish = true;
				}
				count++;
				count++;
				break;
			case 3:
				BeginRolate(matrix, (XBigY ? count : 0), (XBigY ? 0 : count));
				if (count > 0) {
					rolateHandler.sendEmptyMessage(3);
				} else {
					isFinish = true;
					if (!isActionMove && onclick != null) {
						onclick.onClick();
					}
				}
				count--;
				count--;
				break;
			case 6:
				count = getDegree();
				BeginRolate(matrix, (XBigY ? count : 0), (XBigY ? 0 : count));
				rolateHandler.sendEmptyMessage(3);
				break;
			default:
				break;
			}
		};
	};
	private synchronized void BeginRolate(Matrix matrix, float rolateX,
			float rolateY) {
		// Bitmap bm = getImageBitmap();
		int scaleX = (int) (vWidth * 0.5f);
		int scaleY = (int) (vHeight * 0.5f);
		camera.save();
		camera.rotateX(RolateY > 0 ? rolateY : -rolateY);
		camera.rotateY(RolateX < 0 ? rolateX : -rolateX);
		camera.getMatrix(matrix);
		camera.restore();
		// 控制中心點
		if (RolateX > 0 && rolateX != 0) {
			matrix.preTranslate(-vWidth, -scaleY);
			matrix.postTranslate(vWidth, scaleY);
		} else if (RolateY > 0 && rolateY != 0) {
			matrix.preTranslate(-scaleX, -vHeight);
			matrix.postTranslate(scaleX, vHeight);
		} else if (RolateX < 0 && rolateX != 0) {
			matrix.preTranslate(-0, -scaleY);
			matrix.postTranslate(0, scaleY);
		} else if (RolateY < 0 && rolateY != 0) {
			matrix.preTranslate(-scaleX, -0);
			matrix.postTranslate(scaleX, 0);
		}
		setImageMatrix(matrix);
	}
	private Handler handler = new Handler() {
		private Matrix matrix = new Matrix();
		private float s;
		int count = 0;

		public void handleMessage(android.os.Message msg) {
			matrix.set(getImageMatrix());
			switch (msg.what) {
			case 1:

				if (!isFinish) {
					return;
				} else {
					isFinish = false;
					count = 0;
					s = (float) Math.sqrt(Math.sqrt(minScale));
					BeginScale(matrix, s);
					handler.sendEmptyMessage(2);
				}
				break;
			case 2:

				BeginScale(matrix, s);
				if (count < 4) {
					handler.sendEmptyMessage(2);

				} else {
					isFinish = true;
					if (isActionMove && onclick != null) {
						onclick.onClick();
					}
				}
				count++;
				break;
			case 6:
				if (!isFinish) {
					handler.sendEmptyMessage(6);

				} else {
					isFinish = false;
					count = 0;
					s = (float) Math.sqrt(Math.sqrt(1.0f / minScale));
					BeginScale(matrix, s);
					handler.sendEmptyMessage(2);
				}
				break;
			default:
				break;
			}
		};
	};

	private synchronized void BeginScale(Matrix matrix, float scale) {
		int scaleX = (int) (vWidth * 0.5f);
		int scaleY = (int) (vHeight * 0.5f);
		matrix.postScale(scale, scale, scaleX, scaleY);
		setImageMatrix(matrix);
	}

	public int getDegree() {
		return rotateDegree;
	}

	public void setDegree(int degree) {
		rotateDegree = degree;
	}

	public float getScale() {
		return minScale;
	}

	public void setScale(float scale) {
		minScale = scale;
	}

	
}
           

2、 算角度的

package com.dreamlive.testrolatea;

/**
 * 計算伸縮的範圍角度
 * 
 * @author dreamlive
 * 
 */
public class Record {

	public int getDegrees(float a, float b) {
		float dx = a;
		float x = b / 4;
		float x2 = 3 * b / 4;
		if (dx < x / 10) {
			return 10;
		} else if (dx < x / 5) {
			return 9;
		} else if (dx < x * 3 / 10) {
			return 8;
		} else if (dx < x * 2 / 5) {
			return 7;
		} else if (dx < x * 5 / 10) {
			return 6;
		} else if (dx < x * 3 / 5) {
			return 5;
		} else if (dx < x * 7 / 10) {
			return 4;
		} else if (dx < x * 4 / 5) {
			return 3;
		} else if (dx < x * 9 / 10) {
			return 2;
		} else if (dx < x) {
			return 2;
		} else if (dx - x2 > x * 9 / 10) {
			return 10;
		} else if (dx - x2 > x * 4 / 5) {
			return 9;
		} else if (dx - x2 > x * 7 / 10) {
			return 8;
		} else if (dx - x2 > x * 3 / 5) {
			return 7;
		} else if (dx - x2 > x * 5 / 10) {
			return 6;
		} else if (dx - x2 > x * 2 / 5) {
			return 5;
		} else if (dx - x2 > x * 3 / 10) {
			return 4;
		} else if (dx - x2 > x / 5) {
			return 3;
		} else if (dx - x2 > x / 10) {
			return 2;
		}
		return 10;
	}

}