drawpaint的类方法

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.Bitmap.Config;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.Paint.Style;

import android.util.Log;

import android.view.View;

class DrawCG extends View {

private static final String tag = "DrawCG";
private Paint paint;
private Canvas canv;
private Bitmap mBitmap;

// private EditText r1;

// private EditText g1;

// private EditText b1;

public DrawCG(Context context, int width, int height) {
super(context);
// 声明画笔
paint = new Paint();
// 设置颜色
paint.setColor(Color.RED);
// 设置抗锯齿
paint.setAntiAlias(true);
// 设置线宽
paint.setStrokeWidth(3);
// 设置非填充
paint.setStyle(Style.STROKE);
// 声明位图
mBitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888);
// 声明画布
canv = new Canvas(mBitmap);
}

@Override
protected void onDraw(Canvas canvas) {
canvas.drawBitmap(mBitmap, 0, 0, null);
// super.onDraw(canvas);
}

/**
* RED
* 
* @return
*/
public Bitmap drawRed() {
// canv.drawLine(200, 50, 600, 50, paint);
// canv.drawARGB(64,3, 3, 3);
canv.drawColor(Color.RED);

return mBitmap;

}

/**
* blue
* 
* @return
*/
public Bitmap drawBlue() {
canv.drawColor(Color.BLUE);
return mBitmap;
}

/**
* green
* 
* @return
*/
public Bitmap drawGreen() {

// canv.drawRect(new Rect(150, 150, 500, 500), paint);
canv.drawColor(Color.GREEN);

return mBitmap;
}

/*
* black
*/
public Bitmap drawBlack() {

// canv.drawRect(new Rect(150, 150, 500, 500), paint);
canv.drawColor(Color.BLACK);

return mBitmap;
}

/*
* white *
*/
public Bitmap drawWhite() {

// canv.drawRect(new Rect(150, 150, 500, 500), paint);
canv.drawColor(Color.WHITE);

return mBitmap;
}

/*
* 255灰阶 *
*/
public Bitmap paintBitmap(int r, int g, int b) {
Log.e(tag, "调用画图的方法,这里传入参数, r-->" + r + "| g--->" + g + "|b--->" + b);
canv.drawRGB(r, g, b);
return mBitmap;

}

/*
* 64灰阶 *
*/
public Bitmap Onehuijie(int r, int g, int b) {
Log.e(tag, "64  4*灰阶调用");
// canv.drawARGB(32, 4 * r - 1, 4 * g - 1, 4 * b - 1);

if ((r == 64) | (g == 64) |( b == 64)) {
canv.drawRGB(255, 255, 255);
Log.e(tag, "r ,g ,b 的值都是 255 , 255, 255");
}else {
canv.drawRGB(4 * r , 4 * g , 4 * b);
Log.e(tag, "64灰阶计算执行,(4*r):"+(4*r)+"(4*g):"+(4*g)+"(4*b):"+(4*b));
}

return mBitmap;
}

/*
* 外围白,中心黑*
*/
public Bitmap BB(float left, float top, float right, float bottom) {
Log.e(tag, "外围白,中心黑class");
canv.drawColor(Color.WHITE);
Paint paint = new Paint();
paint.setColor(Color.BLACK); // 设置画笔颜色
paint.setStyle(Style.FILL);// 设置填充样式
paint.setStrokeWidth(15);// 设置画笔宽度
// canv.drawRect(135, 444, 1000, 1332, paint);
// canv.drawRect(left / 8, top / 4, right * 7 / 8, bottom * 3 / 4,
// paint);// 直接构造
canv.drawRect(left / 4, top / 4, right * 3 / 4, bottom * 3 / 4, paint);// 直接构造
return mBitmap;
}

public Bitmap Bh(float left, float top, float right, float bottom) {
Log.e(tag, "外围白,中心huiclass");
canv.drawColor(Color.WHITE);
Paint paint = new Paint();
paint.setColor(Color.rgb(128, 128, 128)); // 设置画笔颜色
paint.setStyle(Style.FILL);// 设置填充样式
paint.setStrokeWidth(15);// 设置画笔宽度

canv.drawRect(left / 4, top / 4, right * 3 / 4, bottom * 3 / 4, paint);// 直接构造
return mBitmap;
}

public Bitmap BJ(float left, float top, float right, float bottom) {
Log.e(tag, "外围灰色,中心白class");
canv.drawColor(Color.rgb(128, 128, 128));
Paint paint = new Paint();
paint.setColor(Color.WHITE); // 设置画笔颜色
paint.setStyle(Style.FILL);// 设置填充样式
paint.setStrokeWidth(15);// 设置画笔宽度

canv.drawRect(left / 4, top / 4, right * 3 / 4, bottom * 3 / 4, paint);// 直接构造
return mBitmap;
}

public Bitmap BK(float left, float top, float right, float bottom) {
Log.e(tag, "外围灰色,中心blackclass");
canv.drawColor(Color.rgb(128, 128, 128));
Paint paint = new Paint();
paint.setColor(Color.BLACK); // 设置画笔颜色
paint.setStyle(Style.FILL);// 设置填充样式
paint.setStrokeWidth(15);// 设置画笔宽度

canv.drawRect(left / 4, top / 4, right * 3 / 4, bottom * 3 / 4, paint);// 直接构造
return mBitmap;
}

}