package eoc.studio.voicecard.handwriting;
import eoc.studio.voicecard.R;
import eoc.studio.voicecard.utils.PaintUtility;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.BlurMaskFilter;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.EmbossMaskFilter;
import android.graphics.MaskFilter;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Paint.Style;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
public class HandWritingView extends View
{
private static String TAG ="HandWritingView";
private Paint paint = null;
private Canvas canvas = null;
private static Bitmap originalBitmap = null;
public static Bitmap new1Bitmap = null;
private static Bitmap new2Bitmap = null;
private static Bitmap tempBitmap;
public static Bitmap saveImage = null;
private float clickX = 0, clickY = 0;
private float startX = 0, startY = 0;
private boolean isClear = false;
private static int color = Color.BLACK; // 設置畫筆的顏色
private static float strokeWidth = (float)PaintUtility.PEN_SIZE.SIZE_1;
private static boolean isClearMode = false;
private Path path;
public HandWritingView(Context context)
{
this(context, null);
init();
}
public HandWritingView(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
init();
}
public HandWritingView(Context context, AttributeSet attrs)
{
super(context, attrs);
init();
}
private void init()
{
path = new Path();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;
options.outWidth = PaintUtility.SKETTCHPAD.WIDTH;
options.outHeight = PaintUtility.SKETTCHPAD.HEIGHT;
Bitmap tempBitmap = Bitmap.createBitmap(PaintUtility.SKETTCHPAD.WIDTH,
PaintUtility.SKETTCHPAD.HEIGHT, Bitmap.Config.ARGB_8888);
// original backgroupd color
// tempBitmap.eraseColor(android.graphics.Color.WHITE);
// using backgroupd color
tempBitmap.eraseColor(Color.TRANSPARENT);
tempBitmap.setHasAlpha(true);
// tempBitmap = BitmapFactory.decodeResource(getResources(),
originalBitmap = tempBitmap.copy(Bitmap.Config.ARGB_8888, true);
originalBitmap.setHasAlpha(true);
new1Bitmap = Bitmap.createBitmap(originalBitmap);
new1Bitmap.setHasAlpha(true);
}
public void clear()
{
isClear = true;
// recyclingResources.recycleBitmap(new1Bitmap);
new2Bitmap = Bitmap.createBitmap(originalBitmap);
new2Bitmap.setHasAlpha(true);
invalidate();
}
public Bitmap saveImage()
{
if (saveImage == null) { return null; }
return saveImage;
}
public void setImge()
{
saveImage = null;
}
public void setstyle(float strokeWidth)
{
Log.e(TAG, "setstyle() strokeWidth is "+strokeWidth);
this.strokeWidth = strokeWidth;
}
public void setPenColor(int color){
this.color = color;
}
public void enableEraser(){
isClearMode = true;
}
public void disableEraser(){
isClearMode = false;
}
/**
* 功能：完成畫板的相關操作
*/
@SuppressLint("DrawAllocation")
@Override
protected void onDraw(Canvas canvas)
{
super.onDraw(canvas);
canvas.clipRect(0, 0, PaintUtility.SKETTCHPAD.WIDTH, PaintUtility.SKETTCHPAD.HEIGHT);// 控制畫板的區域坐標(x,y,x+width,y+high);
// canvas.drawColor(Color.argb(150, 120, 120, 0));//控制畫板的背景顏色
// canvas.drawColor(R.color.deeppink);
canvas.drawBitmap(HandWriting(new1Bitmap), 0, 0, null);
canvas.drawPath(path, paint);
if(isClearMode){
}
}
/**
* 功能：完成畫筆的操作，並返回bitmap對像
*
* @param originalBitmap
* @return
*/
@SuppressLint("HandlerLeak")
public Bitmap HandWriting(Bitmap originalBitmap)
{
if (isClear)
{
canvas = new Canvas(new2Bitmap);
}
else
{
canvas = new Canvas(originalBitmap);
}
paint = new Paint();
if(isClearMode){
paint.setColor(Color.TRANSPARENT);
paint.setXfermode(new PorterDuffXfermode(
Mode.CLEAR));
Log.e(TAG, "HandWriting() paint.setXfermode(CLEAR)");
}else{
paint.setColor(this.color); // 設置畫筆的顏色
// Log.e(TAG, "HandWriting() this.color is"+this.color);
//
// Log.e(TAG, "HandWriting() paint.getXfermode(); is"+paint.getXfermode());
paint.setXfermode(null);
}
paint.setStyle(Style.STROKE);
// Log.e(TAG, "HandWriting() strokeWidth is"+strokeWidth);
paint.setStrokeWidth(this.strokeWidth); //設置畫筆的粗細
// paint.setStrokeWidth(penSize); // 設置畫筆的粗細
getMaskFilter(PaintUtility.PEN_TYPE.PLAIN_PEN);
paint.setAntiAlias(true); // 抗鋸齒
paint.setDither(true);
paint.setFilterBitmap(true);
paint.setSubpixelText(true);
paint.setStrokeJoin(Paint.Join.ROUND);
paint.setStrokeCap(Paint.Cap.ROUND);
if (isClear) { return new2Bitmap; }
return originalBitmap;
}
/**
* 功能：完成對畫筆路徑的操作,為了保證畫筆效果的光滑性，採用貝爾曲線法
*/
@Override
public boolean onTouchEvent(MotionEvent event)
{
startX = event.getX();
startY = event.getY();
Log.e(TAG, "onTouchEvent() startX "+startX+",startY "+startY);
switch (event.getAction())
{
case MotionEvent.ACTION_DOWN:
touchDown(event);
return true;
case MotionEvent.ACTION_MOVE:
touchMove(event);
return true;
case MotionEvent.ACTION_UP:
touchUp(event);
return true;
default:
break;
}
return super.onTouchEvent(event);
}
/**
* 功能：手指點下屏幕時調用
*
* @param event
*/
private void touchDown(MotionEvent event)
{
clickX = startX;
clickY = startY;
// path繪製的繪製起點
path.moveTo(startX, startY);
invalidate();
}
/**
* 功能：手指在屏幕上滑動時調用
*
* @param event
*/
private void touchMove(MotionEvent event)
{
// 二次貝塞爾，實現平滑曲線；clickX, clickY為操作點，(clickX+startX)/2,
// (clickY+startY)/2為終點
path.quadTo(clickX, clickY, (clickX + startX) / 2, (clickY + startY) / 2);
// 第二次執行時，第一次結束調用的坐標值將作為第二次調用的初始坐標值
clickX = startX;
clickY = startY;
invalidate();
}
/**
* 功能：手指離開屏幕時調用
*
* @param event
*/
private void touchUp(MotionEvent event)
{
// 鼠標彈起保存最後狀態
canvas.drawPath(path, paint);
// 重置繪製路線，即隱藏之前繪製的軌跡
path.reset();
invalidate();
}
/**
* 功能：畫板界面離開是調用
*/
@Override
protected void onDetachedFromWindow()
{
// TODO Auto-generated method stub
super.onDetachedFromWindow();
}
/**
* 功能：設置畫筆風格
*
* @param mPaintType
* @return
*/
private MaskFilter getMaskFilter(int mPaintType)
{
MaskFilter maskFilter = null;
switch (mPaintType)
{
case PaintUtility.PEN_TYPE.PLAIN_PEN:// 簽字筆風格
maskFilter = null;
break;
case PaintUtility.PEN_TYPE.BLUR:// 鉛筆模糊風格
maskFilter = new BlurMaskFilter(8, BlurMaskFilter.Blur.NORMAL);
break;
case PaintUtility.PEN_TYPE.EMBOSS:// 毛筆浮雕風格
maskFilter = new EmbossMaskFilter(new float[] { 1, 1, 1 }, 0.4f, 6, 3.5f);
break;
case PaintUtility.PEN_TYPE.TS_PEN:// 透明水彩風格
maskFilter = null;
paint.setAlpha(50);
break;
default:
maskFilter = null;
break;
}
paint.setMaskFilter(maskFilter);
return maskFilter;
}
}