模拟立体翻转效果，非Gallery实现.zip

package org.snake.video; import java.util.ArrayList; import java.util.Date; import java.util.List; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.PaintFlagsDrawFilter; import android.graphics.Rect; import android.util.AttributeSet; import android.util.Log; import android.view.GestureDetector; import android.view.MotionEvent; import android.view.View; import android.view.GestureDetector.OnGestureListener; import android.widget.FrameLayout; import android.widget.ImageView; public class SnakeLayout extends FrameLayout { private static final String LOG_TAG = "SnakeLayout"; private GestureDetector mGestureDetector; /** * 手势识别类 */ private SnakeOnGestureListener mGestureListener; /** * 子视图集合 */ private List<View> ViewHolder; /** * 表示选中的视图索引号 */ private int selectImg; /** * 总子视图数 */ private int totalViewNum; private View mContentView; private SnakeView ScrollView; private Context mContext; /** * 状态枚举 READY：准备状态， ABOUT_TO_ANIMATE：启动动画状态， TRACKING：急停状态， ANIMATING：运行状态， * ANIMATE_END：结束状态 */ private enum State { ABOUT_TO_ANIMATE, ANIMATING, ANIMATE_END, READY, TRACKING }; /** * 运行状态 */ private State mState; /** * 开始启动的子视图索引 */ private double aniStartPos;// Value = scrollNum + percent*direction; /** * 结束启动的子视图索引 */ private double aniStopPos;// Value = scrollNum + percent*direction; /** * 开始启动的时间 */ private Date aniStartTime; /** * 动画运行毫秒数 */ private long aniTime = 1000; /** * 动画间隙时间 */ private double aniSpeed = 500; /** * 暂时不知道 */ private double aniDefG = 5; /** * 视图宽度 */ private int mContentWidth = 0; /** * 视图高度 */ private int mContentHeight = 0; /** * 点击的子视图索引号 */ private int clickItem = -1; /** * 左移、右移标志 */ private int direction = 0; private int movDirection = 0; private double percent = 0; private int scrollNum = 0; private PathScale myPathViews; private List<Bitmap> BmpRecViews; private OnSelectListener selectListener; private OnClickListener clickListener; private int currentIndex = 0; /** * 相片处理类 */ Matrix mMatrix = new Matrix(); /** * 轨迹圆信息 */ private float[] arcInfo0 = new float[] { 229.12245f, 1105.1938f, 1105.2046f }; private float[] arcInfo1 = new float[] { 92.7498f, -3004.5198f, 3041.0974f }; private float[] arcInfo2 = new float[] { 420.3208f, -696.6356f, 960.4874f }; private float[] arcInfo3 = new float[] { 843.7643f, -1649.7491f, 1916.4272f }; private float[] arcInfo4 = new float[] { 710.5019f, -3083.5166f, 3120.117f }; private float[] arcInfo5 = new float[] { 570.63947f, 1106.748f, 1106.7744f }; private float[] arcInfo6 = new float[] { 384.15384f, -685.53845f, 948.55145f }; private float[] arcInfo7 = new float[] { -40.744934f, -1641.029f, 1907.2142f }; public SnakeLayout(Context context, AttributeSet attrs) { super(context, attrs); Log.d(LOG_TAG, "Init SnakeLayout"); mContext = context; TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SnakeLayout); selectImg = a.getInteger(R.styleable.SnakeLayout_selectImg, -1); a.recycle(); mGestureListener = new SnakeOnGestureListener(); mGestureDetector = new GestureDetector(mGestureListener); mGestureDetector.setIsLongpressEnabled(false); BmpRecViews = new ArrayList<Bitmap>(); myPathViews = new PathScale(); mState = State.READY; } public void Init() { Log.d(LOG_TAG, "SnakeLayout.Init()"); for (int i = 0; i < totalViewNum; i++) { ImageView v = (ImageView) ViewHolder.get(i); v.setScaleType(ImageView.ScaleType.FIT_XY); v.setImageBitmap(BmpRecViews.get((i + currentIndex) % BmpRecViews.size())); } } public void addBitmap(Bitmap b) { if (b != null) BmpRecViews.add(b); } public void addBitmap(Bitmap b, int position) { if (b != null) BmpRecViews.add(position, b); } public void addRec(int rec) { Bitmap b = BitmapFactory.decodeResource(this .getResources(), rec); if (b != null) BmpRecViews.add(b); } public void addRec(int rec, int position) { Bitmap b = BitmapFactory.decodeResource(this.getResources(), rec); if (b != null) BmpRecViews.add(position, b); } private class PathScale { private int totalNum; List<Double> myLen; List<Rect> myRect; int recentScrollNum = 0; double RecentPercent = 0; public PathScale() { totalNum = 0; myLen = new ArrayList<Double>(); myRect = new ArrayList<Rect>(); } public double getAverageLen() { double len = 0; if (totalNum < 2) return len; for (int i = 0; i < totalNum - 2; i++) { len += myLen.get(i); } return len / (totalNum - 1); } public int size() { return totalNum; } public void addPointView(int left, int top, int right, int bottom) { totalNum++; Log.d(LOG_TAG, "SnakeLayout.PathScale.addPointView()total num : " + totalNum); Rect r = new Rect(left, top, right, bottom); myRect.add(r); if (totalNum > 1) { Rect r0 = myRect.get(totalNum - 2); int dx = r0.centerX() - r.centerX(); int dy = r0.centerY() - r.centerY(); double len = Math.sqrt(dx * dx + dy * dy); myLen.add(len); } } public int getRecentScrollNum() { return recentScrollNum; } public double getPercent() { return RecentPercent; } public void computeScroll(int clickNum, int dir, double len) { double remain = len; recentScrollNum = 0; RecentPercent = 0; if (dir == 1) { for (int i = clickNum;; i++) { if (i > totalNum - 2) i = totalNum - 2; if (i < 0) i = 0; double tmp = myLen.get(i); if (remain >= tmp) { recentScrollNum++; remain -= tmp; } else { RecentPercent = remain / tmp; break; } } } else if (dir == -1) { for (int i = clickNum;; i--) { if (i - 1 > totalNum - 2) i = totalNum - 1; if (i - 1 < 0) i = 1; double tmp = myLen.get(i - 1); if (remain >= tmp) { recentScrollNum--; remain -= tmp; } else { RecentPercent = remain / tmp; break; } } } } public Rect getMoveRect(int selectNum) { if (direction == 1) { int newIndex = selectNum + scrollNum; if (newIndex >= totalNum - 1) { Rect r0 = myRect.get(totalNum - 1); Rect r1 = myRect.get(totalNum - 2); int nx = (int) (r0.centerX() - (r1.centerX() - r0.centerX()) * percent); int ny = (int) (r0.centerY() - (r1.centerY() - r0.centerY()) * percent); int nw = (int) (r0.width() - (r1.width() - r0.width()) * percent); int nh = (int) (r0.height() - (r1.height() - r0.height()) * percent); return new Rect(nx - nw / 2, ny - nh / 2, nx + nw / 2, ny + nh / 2); } else if (newIndex == -1) { Rect r0 = myRect.get(0); Rect r1 = myRect.get(1); int nx = (int) (r0.centerX() - (r1.centerX() - r0.centerX()) * (1 - percent)); int ny = (int) (r0.centerY() - (r1.centerY() - r0.centerY()) * (1 - percent)); int nw = (int) (r0.width() - (r1.width() - r0.width()) * (1 - percent)); int nh = (int) (r0.height() - (r1.height() - r0.height()) * (1 - percent)); return new Rect(nx - nw / 2, ny - nh / 2, nx + nw / 2, ny + nh / 2); } else if (newIndex > totalNum - 1 || newIndex < -1) { return null; } else { Rect r0 = myRect.get(newIndex); Rect