package com.kiminonawa.mydiary.entries.calendar;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.Region;
import android.graphics.drawable.GradientDrawable;
import android.os.Build;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Scroller;
import com.facebook.device.yearclass.YearClass;
import com.kiminonawa.mydiary.R;
import com.kiminonawa.mydiary.shared.ScreenHelper;
import com.kiminonawa.mydiary.shared.statusbar.ChinaPhoneHelper;
import java.util.Calendar;
//Ref: http://blog.csdn.net/hmg25/article/details/6419694
public class PageEffectView extends View {
private CalendarFactory calendarFactory;
private int mWidth;
private int mHeight;
private int mCornerX = 0; // 拖拽点对应的页脚
private int mCornerY = 0;
private Path mPath0;
private Path mPath1;
private Bitmap mCurPageBitmap = null; // this page
private Bitmap mNextPageBitmap = null;
private Canvas mCurrentPageCanvas, mNextPageCanvas;
//This rect is to clip the over view shadow.
private Rect calendarRect;
private PointF mTouch = new PointF(); // Touch point
private float initialTouchX; // start touch point
private int minSize;
private PointF mBezierStart1 = new PointF(); // 贝塞尔曲线起始点
private PointF mBezierControl1 = new PointF(); // 贝塞尔曲线控制点
private PointF mBeziervertex1 = new PointF(); // 贝塞尔曲线顶点
private PointF mBezierEnd1 = new PointF(); // 贝塞尔曲线结束点
private PointF mBezierStart2 = new PointF(); // 另一条贝塞尔曲线
private PointF mBezierControl2 = new PointF();
private PointF mBeziervertex2 = new PointF();
private PointF mBezierEnd2 = new PointF();
private float mMiddleX;
private float mMiddleY;
private float mDegrees;
private float mTouchToCornerDis;
private ColorMatrixColorFilter mColorMatrixFilter;
private Matrix mMatrix;
private float[] mMatrixArray = {0, 0, 0, 0, 0, 0, 0, 0, 1.0f};
private boolean mIsRTandLB; // 是否属于右上左下
private float mMaxLength;
private int[] mBackShadowColors;
private int[] mFrontShadowColors;
private GradientDrawable mBackShadowDrawableLR;
private GradientDrawable mBackShadowDrawableRL;
private GradientDrawable mFolderShadowDrawableLR;
private GradientDrawable mFolderShadowDrawableRL;
private GradientDrawable mFrontShadowDrawableHBT;
private GradientDrawable mFrontShadowDrawableHTB;
private GradientDrawable mFrontShadowDrawableVLR;
private GradientDrawable mFrontShadowDrawableVRL;
private Paint mPaint;
private Scroller mScroller;
//Calendar lock
private boolean isCalendarUpdated = false;
public PageEffectView(Context context, Calendar calendar) {
super(context);
init(context, calendar);
}
private void init(Context context, Calendar calendar) {
//In the Android 4.2 , LAYER_TYPE_SOFTWARE will cause some question
int year = YearClass.get(context.getApplicationContext());
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.JELLY_BEAN_MR1 ||
year < YearClass.CLASS_2013) {
this.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
//View
setScreen(context);
createBitmaps();
//Set calendar , this object should be created after w,h was set.
calendarFactory = new CalendarFactory(context, calendar, mWidth, mHeight);
//Page effect
mPath0 = new Path();
mPath1 = new Path();
createDrawable();
mPaint = new Paint();
mPaint.setStyle(Paint.Style.FILL);
ColorMatrix cm = new ColorMatrix();
float array[] = {0.55f, 0, 0, 0, 80.0f, 0, 0.55f, 0, 0, 80.0f, 0, 0,
0.55f, 0, 80.0f, 0, 0, 0, 0.2f, 0};
cm.set(array);
mColorMatrixFilter = new ColorMatrixColorFilter(cm);
mMatrix = new Matrix();
mScroller = new Scroller(getContext());
mTouch.x = 0.01f; // 不让x,y为0,否则在点计算时会有问题
mTouch.y = 0.01f;
//Set today text
calendarFactory.onDraw(mCurrentPageCanvas);
}
private void setScreen(Context context) {
mWidth = ScreenHelper.getScreenWidth(context);
if (ChinaPhoneHelper.getDeviceStatusBarType() == ChinaPhoneHelper.OTHER) {
mHeight =
(int) ((ScreenHelper.getScreenHeight(context) - ScreenHelper.getStatusBarHeight(context)
- context.getResources().getDimension(R.dimen.top_bar_height))
* 0.7);
} else {
mHeight =
(int) ((ScreenHelper.getScreenHeight(context) -
context.getResources().getDimension(R.dimen.top_bar_height))
* 0.7);
}
calendarRect = new Rect(0, 0, mWidth, mHeight);
mMaxLength = (float) Math.hypot(mWidth, mHeight);
minSize = mWidth / 10;
}
private void createBitmaps() {
mCurPageBitmap = Bitmap.createBitmap(mWidth, mHeight, Bitmap.Config.ARGB_8888);
mNextPageBitmap = Bitmap.createBitmap(mWidth, mHeight, Bitmap.Config.ARGB_8888);
mCurrentPageCanvas = new Canvas(mCurPageBitmap);
mNextPageCanvas = new Canvas(mNextPageBitmap);
}
/**
* Author : hmg25 Version: 1.0 Description : 计算拖拽点对应的拖拽脚
*/
public void calcCornerXY(float x, float y) {
if (x <= mWidth / 2)
mCornerX = 0;
else
mCornerX = mWidth;
if (y <= mHeight / 2)
mCornerY = 0;
else
mCornerY = mHeight;
if ((mCornerX == 0 && mCornerY == mHeight)
|| (mCornerX == mWidth && mCornerY == 0))
mIsRTandLB = true;
else
mIsRTandLB = false;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return doTouchEvent(event);
}
public boolean doTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
getParent().requestDisallowInterceptTouchEvent(true);
isCalendarUpdated = false;
//
abortAnimation();
calcCornerXY(event.getX(), event.getY());
calendarFactory.onDraw(mCurrentPageCanvas);
//
mTouch.x = event.getX();
mTouch.y = event.getY();
initialTouchX = event.getX();
break;
case MotionEvent.ACTION_MOVE:
if (isDragOverMinSize(event.getX()) && !isCalendarUpdated) {
if (DragToRight()) {
calendarFactory.preDateDraw(mNextPageCanvas);
} else {
calendarFactory.nextDateDraw(mNextPageCanvas);
}
isCalendarUpdated = true;
}
mTouch.x = event.getX();
mTouch.y = event.getY();
this.postInvalidate();
break;
case MotionEvent.ACTION_UP:
getParent().requestDisallowInterceptTouchEvent(false);
if (canDragOver() && isCalendarUpdated) {
startAnimation(1200);
} else {
mTouch.x = mCornerX - 0.09f;
mTouch.y = mCornerY - 0.09f;
}
this.postInvalidate();
break;
case MotionEvent.ACTION_CANCEL:
getParent().requestDisallowInterceptTouchEvent(false);
break;
}
return true;
}
/**
* Author : hmg25 Version: 1.0 Description : 求解直线P1P2和直线P3P4的交点坐标
*/
public PointF getCross(PointF P1, PointF P2, PointF P3, PointF P4) {
PointF CrossP = new PointF();
// 二元函数通式： y=ax+b
float a1 = (P2.y - P1.y) / (P2.x - P1.x);
float b1 = ((P1.x * P2.y) - (P2.x * P1.y)) / (P1.x - P2.x);
float a2 = (P4.y - P3.y) / (P4.x - P3.x);
float b2 = ((P3.x * P4.y) - (P4.x * P3.y)) / (P3.x - P4.x);
CrossP.x = (b2 - b1) / (a1 - a2);
CrossP.y = a1 * CrossP.x + b1;
return CrossP;
}
private void calcPoints() {
mMiddleX = (mTouch.x + mCornerX) / 2;
mMiddleY = (mTouch.y + mCornerY) / 2;
mBezierControl1.x = mMiddleX - (mCornerY - mMiddleY)
* (mCornerY - mMiddleY) / (mCornerX - mMiddleX);
mBezierControl1.y = mCornerY;
mBezierControl2.x = mCornerX;
mBezierControl2.y = mMiddleY - (mCornerX - mMiddleX)
* (mCornerX - mMiddleX) / (mCornerY - mMiddleY);
// Log.i("TAG", "mTouchX " + mTouch.x + " mTouchY " + mTouch.y);
// Log.i("TAG", "mBezierControl1.x " + mBezierControl1.x
// + " mBezierControl1.y " + mBezierControl1.y);
// Log.i("TAG", "mBezierControl2.x " + mBezierControl2.x
// + " mBezierControl2.y " + mBezierControl2.y);
mBezierStart1.x = mBezierControl1.x - (mCornerX - mBezierControl1.x)
/ 2;
mBezierStart1.y = mCornerY;
// 当mBezierStart1.x < 0或者mBezierStart1.x > 480时
// 如果继续翻页，会出现BUG故在此限制
if (mTouch.x > 0 && mTouch.x < mWidth) {
if (mBezierStart1.x < 0 || mBezierStart1.x > mWidth) {
if (mBezierStart1.x < 0)
mBezierStart1.x = mWidth - mBezierStart1.x;
float f1 = Math.abs(mCornerX - mTouch.x);
float f2 = mWidth * f1 / mBezierStart1.x;
mTouch.x = Math.abs(mCornerX - f2);
float f3 = Math.abs(mCornerX - mTouch.x)
* Math.abs(mCornerY - mTouch.y) / f1;
mTouch.y = Math.abs(mCornerY - f3);
mMiddleX = (mTouch.x + mCornerX) / 2;
mMiddleY = (mTouch.y + mCornerY) / 2;
mBezierControl1.x = mMiddleX - (mCornerY - mMiddleY)
* (mCornerY - mMiddleY) / (mCornerX - mMiddleX);
mBezierControl1.y = mCornerY;
mBezierControl2.x = mCornerX;
mBezierControl2.y = mMiddleY - (mCornerX - mMiddleX)
* (mCornerX - mMiddleX) / (mCornerY - mMiddleY);
// Log.i("TAG", "mTouchX --> " + mTouch.x + " mTouchY--> "
// + mTouch.y);
// Log.i("TAG", "mBezierControl1.x-- " + mBezierControl1.x
// + " mBezierControl1.y -- " + mBezierControl1.y);
// Log.i("TAG", "mBezierControl2.x -- " + mBezierControl2.x
// + " mBezierControl2.y -- " + mBezierControl2.y);
mBezierStart1.x = mBezierControl1.x
- (mCornerX - mBezierControl1.x) / 2;
}
}
mBezierStart2.x = mCornerX;
mBezierStart2.y = mBezierControl2.y - (mCornerY - mBezierControl2.y)
/ 2;
mTouchToCornerDis = (float) Math.hypot((mTouch.x - mCornerX),
(mTouch.y - mCornerY));
mBezierEnd1 = getCross(mTouch, mBezierControl1, mBezierStart1,
mBezierStart2);
mBezierEnd2 = getCross(mTouch, mBezierControl2, mBezierStart1,
mBezierStart2);
// Log.i("TAG", "mBezierEnd1.x " + mBezierEnd1.x + " mBezierEnd1.y "
// + mBezierEnd1.y);
// Log.i("TAG", "mBezierEnd2.x " + mBezierEnd2.x + " mBezierEnd2.y "
// + mBezierEnd2.y);
/*
* mBeziervertex1.x 推导
* ((mBezierStart1.x+mBezierEnd1.x)/2+mBezierControl1.x)/2 化简等价于
* (mBezierStart1.x+ 2*mBezierControl1.x+mBezierEnd1.x) / 4
*/
mBeziervertex1.x = (mBezierStart1.x + 2 * mBezierControl1.x + mBezierEnd1.x) / 4;
mBeziervertex1.y = (2 * mBezierControl1.y + mBezierStart1.y + mBezierEnd1.y) / 4;
mBeziervertex2.x = (mBezierStart2.x + 2 * mBezierControl2.x + mBezierEnd2.x) / 4;
mBeziervertex2.y = (2 * mBezierControl2.y + mBezierStart2.y + mBezierEnd2.y) / 4;
}
private void drawCurrentPageArea(Canvas canvas, Bitmap bitmap, Path path) {
mPath0.reset();
mPath0.moveTo(mBezierStart1.x, mBezierStart1.y);
mPath0.quadTo(mBezierControl1.x, mBezierControl1.y, mBezierEnd1.x,
mBezierEnd1.y);
mPath0.lineTo(mTouch.x, mTouch.y);
mPath0.lineTo(mBezierEnd2.x, mBezierEnd2.y);
mPath0.quadTo(mBezierControl2.x, mBezierControl2.y, mBezierStart2.x,
mBezierStart2.y);
mPath0.lineTo(mCornerX, mCornerY);
mPath0.close();
canvas.save();
canvas.clipPath(path, Region.Op.XOR);
canvas.drawBitmap(bitmap, 0, 0, null);
canvas.restore();
}
private void drawNextPageAreaAndShadow(Canvas canvas, Bitmap bitmap) {
mPath1.reset();
mPath1.moveTo(mBezierStart1.x, mBezierStart1.y);
mPath1.lineTo(mBeziervertex1.x, mBeziervertex1.y);
mPath1.lineTo(mBeziervertex2.x, mBeziervertex2.y);
mPath1.lineTo(mBezierStart2.x, mBezierStart2.y);
mPath1.lineTo(mCornerX, mCornerY);
mPath1.close();
mDegrees = (float) Math.toDegrees(Math.atan2(mBezierControl1.x
- mCornerX, mBezierControl2.y - mCornerY));
int leftx;
int rightx;
GradientDrawable mBackShadowDrawable;
if (mIsRTandLB) {
leftx = (int) (mBezierStart1.x);
rightx = (int) (mBezierStart1.x + mTouchToCornerDis / 4);
mBackShadowDrawable = mBackShadowDrawableLR;
} else {
leftx = (int) (mBezierStart1.x - mTouchToCornerDis / 4);
rightx = (int) mBezierStart1.x;
mBackShadowDrawable = mBackShadowDrawableRL;
}
canvas.save();
canvas.clipPath(mPath0);
canvas.clipPath(mPath1, Region.Op.INTERSECT);
canvas.drawBitmap(bitmap, 0, 0, null);
canvas.rotate(mDegrees, mBezierStart1.x, mBezierStart1.y);
mBackShadowDrawable.setBounds(leftx, (int) mBezierStart1.y, rightx,
(int) (mMaxLength + mBezierStart1.y));
mBackShadowDrawable.draw(canvas);
canvas.restore();
}
@Override
protected void onDraw(Canvas canvas) {
calcPoints();
drawCurrentPageArea(canvas, mCurPageBitmap, mPath0);
drawNextPageAreaAndShadow(canvas, mNextPageBitmap);
drawCurrentPageShadow(canvas);
drawCurrentBackArea(canvas, mCurPageBitmap);
}
/**
* Author : hmg25 Version: 1.0 Description : 创建阴影的GradientDrawable
*/
private void createDrawable() {
int[] color = {0x333333, 0xb0333333};
mFolderShadowDrawableRL = new GradientDrawable(
GradientDrawable.Orientation.RIGHT_LEFT, color);
mFolderShadowDrawableRL
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFolderShadowDrawableLR = new GradientDrawable(
GradientDrawable.Orientation.LEFT_RIGHT, color);
mFolderShadowDrawableLR
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mBackShadowColors = new int[]{0xff111111, 0x111111};
mBackShadowDrawableRL = new GradientDrawable(
GradientDrawable.Orientation.RIGHT_LEFT, mBackShadowColors);
mBackShadowDrawableRL.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mBackShadowDrawableLR = new GradientDrawable(
GradientDrawable.Orientation.LEFT_RIGHT, mBackShadowColors);
mBackShadowDrawableLR.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFrontShadowColors = new int[]{0x80111111, 0x111111};
mFrontShadowDrawableVLR = new GradientDrawable(
GradientDrawable.Orientation.LEFT_RIGHT, mFrontShadowColors);
mFrontShadowDrawableVLR
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFrontShadowDrawableVRL = new GradientDrawable(
GradientDrawable.Orientation.RIGHT_LEFT, mFrontShadowColors);
mFrontShadowDrawableVRL
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFrontShadowDrawableHTB = new GradientDrawable(
GradientDrawable.Orientation.TOP_BOTTOM, mFrontShadowColors);
mFrontShadowDrawableHTB
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFrontShadowDrawableHBT = new GradientDrawable(
GradientDrawable.Orientation.BOTTOM_TOP, mFrontShadowColors);
mFrontShadowDrawableHBT
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
}
/**
* Author : hmg25 Version: 1.0 Description : 绘制翻起页的阴影
*/
public void drawCurrentPageShadow(Canvas canvas) {
double degree;
if (mIsRTandLB) {
degree = Math.PI
/ 4
- Math.atan2(mBezierControl1.y - mTouch.y, mTouch.x
- mBezierControl1.x);
} else {
degree = Math.PI
/ 4
- Math.atan2(mTouch.y - mBezierControl1.y, mTouch.x
- mBezierControl1.x);
}
// 翻起页阴影顶点与touch点的距离
double d1 = (float) 25 * 1.414 * Math.cos(degree);
double d2 = (float) 25 * 1.414 * Math.sin(degree);
float x = (float) (mTouch.x + d1);
float y;
if (mIsRTandLB) {
y = (float) (mTouch.y + d2);
} else {
y = (float) (mTouch.y - d2);
}
mPath1.reset();
mPath1.moveTo(x, y);
mPath1.lineTo(mTouch.x, mTouch.y);
mPath1.lineTo(mBezierControl1.x, mBezierControl1.y);
mPath1.lineTo(mBezierStart1.x, mBezierStart1.y);
mPath1.close();
float rotateDegrees;
canvas.save();
canvas.clipPath(mPath0, Region.Op.XOR);
canvas.clipPath(mPath1, Region.Op.INTERSECT);
int leftx;
int rightx;
GradientDrawable mCurrentPageShadow;
if (mIsRTandLB) {
leftx = (int) (mBezierControl1.x);
rightx = (int) mBezierControl1.x + 25;
mCurrentPageShadow = mFrontShadowDrawableVLR;
} else {
leftx = (int) (mBezierControl1.x - 25);
rightx = (int) mBezierControl1.x + 1;
mCurrentPageShadow = mFrontShadowDrawableVRL;
}
rotateDegrees = (float) Math.toDegrees(Math.atan2(mTouch.x
- mBezierControl1.x, mBezierControl1.y - mTouch.y));
canvas.rotate(rotateDegrees, mBezierControl1.x, mBezierControl1.y);
mCurrentPageShadow.setBounds(leftx,
(int) (mBezierControl1.y - mMaxLength), rightx,
(int) (mBezierControl1.y));
mCurrentPageShadow.draw(canvas);
canvas.restore();
mPath1.reset();
mPath1.moveTo(x, y);
mPath1.lineTo(mTouch.x, mTouch.y);
mPath1.lineTo(mBezierControl2.x, mBezierControl2.y);
mPath1.lineTo(mBezierStart2.x, mBezierStart2.y);
mPath1.close();
canvas.save();
canvas.clipPath(mPath0, Region.Op.XOR);
canvas.clipPath(mPath1, Region.Op.INTERSECT);
canvas.clipRect(calendarRect);
if (mIsRTandLB) {
leftx = (int) (mBezierControl2.y);
rightx = (int) (mBezierControl2.y + 25);
mCurrentPageShadow = mFrontShadowDrawableHTB;
} else {
leftx = (int) (mBezierControl2.y - 25);
rightx = (int) (mBezierControl2.y + 1);
mCurrentPageShadow = mFrontShadowDrawableHBT;
}
rotateDegrees = (float) Math.toDegrees(Math.atan2(mBezierControl2.y
- mTouch.y, mBezierControl2.x - mTouch.x));
canvas.rotate(rotateDegrees, mBezierControl2.x, mBezierControl2.y);
float temp;
if (mBezierControl2.y < 0) {
temp = mBezierControl2.y - mHeight;
} else {
temp = mBezierControl2.y;
}
int hmg = (int) Math.hypot(mBezierControl2.x, temp);
if (hmg > mMaxLength) {
mCurrentPageShadow
.setBounds((int) (mBezierControl2.x - 25) - hmg, leftx,
(int) (mBezierControl2.x + mMaxLength) - hmg,
rightx);
} else {
mCurrentPageShadow.setBounds(
(int) (mBezierControl2.x - mMaxLength), leftx,
(int) (mBezierControl2.x), rightx);
}
// Log.i("TAG", "mBezierControl2.x " + mBezierControl2.x
// + " mBezierControl2.y " + mBezierControl2.y);
mCurrentPageShadow.draw(canvas);
canvas.restore();
}
/**
* Author : hmg25 Version: 1.0 Description : 绘制翻起页背面
*/
private void drawCurrentBackArea(Canvas canvas, Bitmap bitmap) {
int i = (int) (mBezierStart1.x + mBezierControl1.x) / 2;
float f1 = Math.abs(i - mBezierControl1.x);
int i1 = (int) (mBezierStart2.y + mBezierControl2.y) / 2;
float f2 = Math.abs(i1 - mBezierControl2.y);
float f3 = Math.min(f1, f2);
mPath1.reset();
mPath1.moveTo(mBeziervertex2.x, mBeziervertex2.y);
mPath1.lineTo(mBeziervertex1.x, mBeziervertex1.y);
mPath1.lineTo(mBezierEnd1.x, mBezierEnd1.y);
mPath1.lineTo(mTouch.x, mTouch.y);
mPath1.lineTo(mBezierEnd2.x, mBezierEnd2.y);
mPath1.close();
GradientDrawable mFolderShadowDrawable;
int left;
int right;
if (mIsRTandLB) {
left = (int) (mBezierStart1.x - 1);
right = (int) (mBezierStart1.x + f3 + 1);
mFolderShadowDrawable = mFolderShadowDrawableLR;
} else {
left = (int) (mBezierStart1.x - f3 - 1);
right = (int) (mBezierStart1.x + 1);
mFolderShadowDrawable = mFolderShadowDrawableRL;
}
canvas.save();
canvas.clipPath(mPath0);
canvas.clipPath(mPath1, Region.Op.INTERSECT);
mPaint.setColorFilter(mColorMatrixFilter);
float dis = (float) Math.hypot(mCornerX - mBezierControl1.x,
mBezierControl2.y - mCornerY);
float f8 = (mCornerX - mBezierControl1.x) / dis;
float f9 = (mBezierControl2.y - mCornerY) / dis;
mMatrixArray[0] = 1 - 2 * f9 * f9;
mMatrixArray[1] = 2 * f8 * f9;
mMatrixArray[3] = mMatrixArray[1];
mMatrixArray[4] = 1 - 2 * f8 * f8;
mMatrix.reset();
mMatrix.setValues(mMatrixArray);
mMatrix.preTranslate(-mBezierControl1.x, -mBezierControl1.y);
mMatrix.postTranslate(mBezierControl1.x, mBezierControl1.y);
canvas.drawBitmap(bitmap, mMatrix, mPaint);
// canvas.drawBitmap(bitmap, mMatrix, null);
mPaint.setColorFilter(null);
canvas.rotate(mDegrees, mBezierStart1.x, mBezierStart1.y);
mFolderShadowDrawable.setBounds(left, (int) mBezierStart1.y, right,
(int) (mBezierStart1.y + mMaxLength));
mFolderShadowDrawable.draw(canvas);
canvas.restore();
}
public void computeScroll() {
super.computeScroll();
if (mScroller.computeScrollOffset()) {
float x = mScroller.getCurrX();
float y = mScroller.getCurrY();
mTouch.x = x;
mTouch.y = y;
postInvalidate();
}
}
private void startAnimation(int delayMillis) {
int dx, dy;
// dx 水平方向滑动的距离，负值会使滚动向左滚动
// dy 垂直方向滑动的距离，负值会使滚动向上滚动
if (mCornerX > 0) {
dx = -(int) (mWidth + mTouch.x);
} else {
dx = (int) (mWidth - mTouch.x + mWidth);
}
if (mCornerY > 0) {
dy = (int) (mHeight - mTouch.y);
} else {
dy = (int) (1 - mTouch.y); // 防止mTouch.y最终变为0
}
mScroller.startScroll((int) mTouch.x, (int) mTouch.y, dx, dy,
delayMillis);
}
public void abortAnimation() {
if (!mScroller.isFinished()) {
mScroller.abortAnimation();
}
}
/**
* Check touch point is not in Corner
*
* @return
*/
public boolean canDragOver() {
if (mTouchToCornerDis > minSize) {
return true;
}
return false;
}
public boolean isDragOverMinSize(float newX) {
if (DragToRight()) {
if ((newX - initialTouchX) > minSize) {
return true;
}
} else {
if ((initialTouchX - newX) > minSize) {
return true;
}
}
return false;
}
/**
* Author : hmg25 Version: 1.0 Description : 是否从左边翻向右边
*/
public boolean DragToRight() {
if (mCornerX > 0) {
return false;
}
return true;
}
}