package com.tejia.lijin.app.util.view.gesturelock;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.Paint.Style;
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import android.graphics.Path;
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import android.view.View;
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public class GestureLockView extends View {
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private static final String TAG = "GestureLockView";
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/**
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* GestureLockView的三种状态
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*/
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enum Mode {
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STATUS_NO_FINGER, STATUS_FINGER_ON, STATUS_FINGER_UP
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}
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/**
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* GestureLockView的当前状态
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*/
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private Mode mCurrentStatus = Mode.STATUS_NO_FINGER;
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/**
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* 宽度
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*/
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private int mWidth;
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/**
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* 高度
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*/
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private int mHeight;
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/**
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* 外圆半径
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*/
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private int mRadius;
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/**
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* 画笔的宽度
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*/
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private int mStrokeWidth = 2;
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/**
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* 圆心坐标
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*/
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private int mCenterX;
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private int mCenterY;
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private Paint mPaint;
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/**
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* 箭头（小三角最长边的一半长度 = mArrawRate * mWidth / 2 ）
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*/
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private float mArrowRate = 0.333f;
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private int mArrowDegree = -1;
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private Path mArrowPath;
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/**
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* 内圆的半径 = mInnerCircleRadiusRate * mRadus
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*
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*/
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private float mInnerCircleRadiusRate = 0.3F;
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/**
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* 四个颜色，可由用户自定义，初始化时由GestureLockViewGroup传入
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*/
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private int mColorNoFingerInner;
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private int mColorNoFingerOutter;
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private int mColorFingerOn;
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private int mColorFingerUp;
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public GestureLockView(Context context, int colorNoFingerInner,
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int colorNoFingerOutter, int colorFingerOn, int colorFingerUp) {
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super(context);
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this.mColorNoFingerInner = colorNoFingerInner;
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this.mColorNoFingerOutter = colorNoFingerOutter;
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this.mColorFingerOn = colorFingerOn;
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this.mColorFingerUp = colorFingerUp;
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mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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mArrowPath = new Path();
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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mWidth = MeasureSpec.getSize(widthMeasureSpec);
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mHeight = MeasureSpec.getSize(heightMeasureSpec);
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// 取长和宽中的小值
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mWidth = mWidth < mHeight ? mWidth : mHeight;
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mRadius = mCenterX = mCenterY = mWidth / 2;
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mRadius -= mStrokeWidth / 2;
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// 绘制三角形，初始时是个默认箭头朝上的一个等腰三角形，用户绘制结束后，根据由两个GestureLockView决定需要旋转多少度
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float mArrowLength = mWidth / 2 * mArrowRate;
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mArrowPath.moveTo(mWidth / 2, mStrokeWidth + 2);
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mArrowPath.lineTo(mWidth / 2 - mArrowLength, mStrokeWidth + 2
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+ mArrowLength);
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mArrowPath.lineTo(mWidth / 2 + mArrowLength, mStrokeWidth + 2
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+ mArrowLength);
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mArrowPath.close();
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mArrowPath.setFillType(Path.FillType.WINDING);
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}
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@Override
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protected void onDraw(Canvas canvas) {
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switch (mCurrentStatus) {
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case STATUS_FINGER_ON:
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// 绘制外圆
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mPaint.setStyle(Style.STROKE);
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mPaint.setColor(mColorFingerOn);
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mPaint.setStrokeWidth(1);
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canvas.drawCircle(mCenterX, mCenterY, (int) (mRadius * 0.8f),
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mPaint);
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// 绘制内圆
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mPaint.setStyle(Style.FILL);
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canvas.drawCircle(mCenterX, mCenterY, mRadius
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* mInnerCircleRadiusRate, mPaint);
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break;
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case STATUS_FINGER_UP:
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// 绘制外圆
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if (isMate) {
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mPaint.setColor(mColorFingerOn);
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} else {
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mPaint.setColor(mColorFingerUp);
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}
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mPaint.setStyle(Style.STROKE);
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mPaint.setStrokeWidth(1);
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canvas.drawCircle(mCenterX, mCenterY, (int) (mRadius * 0.8f),
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mPaint);
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// 绘制内圆
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mPaint.setStyle(Style.FILL);
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canvas.drawCircle(mCenterX, mCenterY, mRadius
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* mInnerCircleRadiusRate, mPaint);
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// drawArrow(canvas);
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break;
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case STATUS_NO_FINGER:
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// 绘制外圆
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// mPaint.setStyle(Style.FILL);
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// mPaint.setColor(mColorNoFingerOutter);
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// canvas.drawCircle(mCenterX, mCenterY, mRadius, mPaint);
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// 绘制内圆
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mPaint.setColor(mColorNoFingerInner);
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canvas.drawCircle(mCenterX, mCenterY, mRadius
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* mInnerCircleRadiusRate, mPaint);
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break;
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}
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}
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/**
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* 绘制箭头
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*
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* @param canvas
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*/
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private void drawArrow(Canvas canvas) {
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if (mArrowDegree != -1) {
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mPaint.setStyle(Style.FILL);
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canvas.save();
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canvas.rotate(mArrowDegree, mCenterX, mCenterY);
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canvas.drawPath(mArrowPath, mPaint);
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canvas.restore();
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}
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}
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private boolean isMate = false;
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/**
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* 设置当前模式并重绘界面
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*
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* @param mode
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*/
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public void setMode(Mode mode) {
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this.mCurrentStatus = mode;
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invalidate();
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}
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public void isMate(boolean isMate) {
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this.isMate = isMate;
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}
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public void setArrowDegree(int degree) {
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this.mArrowDegree = degree;
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}
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public int getArrowDegree() {
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return this.mArrowDegree;
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}
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}
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