java如何在这个洪水填充算法代码和自定义视图中调整位图图像的大小
我是编程新手，我正在尝试实现一种泛光填充算法，将图像中选定的部分着色为配色系统应用程序。 我发现这个link为算法提供了完整的工作代码（但速度较慢）。并且还提供了更快的队列线路地板填充器。 问题是，自定义MyView类被添加到Relativelayout中，以显示将着色的位图，但图像不在视图中，如下所示
我想将其包裹以填充视图，并将其大小与包裹内容中的大小相同
我尝试使用此代码调整其大小
dashBoard = (RelativeLayout) findViewById(R.id.dashBoard);
int width = RelativeLayout.LayoutParams.WRAP_CONTENT;
int hight = RelativeLayout.LayoutParams.WRAP_CONTENT;
myView.setLayoutParams(new RelativeLayout.LayoutParams(width,hight));
dashBoard.addView(myView);
但它不起作用
下面是完整的代码和XML
public class UnicornColorActivity extends AppCompatActivity {
private RelativeLayout dashBoard;
private MyView myView;
public ImageView image;
Button b_red, b_blue, b_green, b_orange, b_clear;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
myView = new MyView(this);
setContentView(R.layout.activity_unicorn_color);
findViewById(R.id.dashBoard);
b_red = (Button) findViewById(R.id.b_red);
b_blue = (Button) findViewById(R.id.b_blue);
b_green = (Button) findViewById(R.id.b_green);
b_orange = (Button) findViewById(R.id.b_orange);
b_red.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
myView.changePaintColor(0xFFFF0000);
}
});
b_blue.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
myView.changePaintColor(0xFF0000FF);
}
});
b_green.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
myView.changePaintColor(0xFF00FF00);
}
});
b_orange.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
myView.changePaintColor(0xFFFF9900);
}
});
dashBoard = (RelativeLayout) findViewById(R.id.dashBoard);
int width = RelativeLayout.LayoutParams.WRAP_CONTENT;
int hight = RelativeLayout.LayoutParams.WRAP_CONTENT;
myView.setLayoutParams(new RelativeLayout.LayoutParams(width,hight));
dashBoard.addView(myView);
}
public class MyView extends View {
private Paint paint;
private Path path;
public Bitmap mBitmap;
public ProgressDialog pd;
final Point p1 = new Point();
public Canvas canvas;
//Bitmap mutableBitmap ;
public MyView(Context context) {
super(context);
this.paint = new Paint();
this.paint.setAntiAlias(true);
pd = new ProgressDialog(context);
this.paint.setStyle(Paint.Style.STROKE);
paint.setStrokeJoin(Paint.Join.ROUND);
paint.setStrokeWidth(5f);
mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.unicorn_2).copy(Bitmap.Config.ARGB_8888, true);
//Bitmap.createScaledBitmap(mBitmap, 60, 60 , false);
this.path = new Path();
}
@Override
protected void onDraw(Canvas canvas) {
this.canvas = canvas;
this.paint.setColor(Color.RED);
canvas.drawBitmap(mBitmap, 0, 0, paint);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
p1.x = (int) x;
p1.y = (int) y;
final int sourceColor = mBitmap.getPixel((int) x, (int) y);
final int targetColor = paint.getColor();
new TheTask(mBitmap, p1, sourceColor, targetColor).execute();
invalidate();
}
return true;
}
public void clear() {
path.reset();
invalidate();
}
public int getCurrentPaintColor() {
return paint.getColor();
}
public void changePaintColor(int color){
this.paint.setColor(color);
}
class TheTask extends AsyncTask<Void, Integer, Void> {
Bitmap bmp;
Point pt;
int replacementColor, targetColor;
public TheTask(Bitmap bm, Point p, int sc, int tc) {
this.bmp = bm;
this.pt = p;
this.replacementColor = tc;
this.targetColor = sc;
pd.setMessage("Filling....");
pd.show();
}
@Override
protected void onPreExecute() {
pd.show();
}
@Override
protected void onProgressUpdate(Integer... values) {
}
@Override
protected Void doInBackground(Void... params) {
FloodFill f = new FloodFill();
f.floodFill(bmp, pt, targetColor, replacementColor);
return null;
}
@Override
protected void onPostExecute(Void result) {
pd.dismiss();
invalidate();
}
}
}
// flood fill
public class FloodFill {
public void floodFill(Bitmap image, Point node, int targetColor, int replacementColor) {
int width = image.getWidth();
int height = image.getHeight();
int target = targetColor;
int replacement = replacementColor;
if (target != replacement) {
Queue<Point> queue = new LinkedList<Point>();
do {
int x = node.x;
int y = node.y;
while (x > 0 && image.getPixel(x - 1, y) == target) {
x--;
}
boolean spanUp = false;
boolean spanDown = false;
while (x < width && image.getPixel(x, y) == target) {
image.setPixel(x, y, replacement);
if (!spanUp && y > 0 && image.getPixel(x, y - 1) == target) {
queue.add(new Point(x, y - 1));
spanUp = true;
} else if (spanUp && y > 0 && image.getPixel(x, y - 1) != target) {
spanUp = false;
}
if (!spanDown && y < height - 1 && image.getPixel(x, y + 1) == target) {
queue.add(new Point(x, y + 1));
spanDown = true;
} else if (spanDown && y < (height - 1) && image.getPixel(x, y + 1) != target) {
spanDown = false;
}
x++;
}
} while ((node = queue.poll()) != null);
}
}
}
}
<RelativeLayout xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
xmlns:tools="http://schemas.安卓.com/tools"
安卓:id="@+id/drawingLayout"
安卓:layout_width="match_parent"
安卓:layout_height="match_parent"
xmlns:app="http://schemas.安卓.com/apk/res-auto"
>
<安卓.support.v7.widget.CardView
安卓:id="@+id/cardView"
安卓:layout_width="match_parent"
安卓:layout_height="542dp"
安卓:layout_gravity="center"
安卓:layout_marginTop="8dp"
安卓:layout_marginRight="8dp"
安卓:layout_marginLeft="8dp"
安卓:layout_marginBottom="8dp"
安卓:background="?安卓:attr/selectableItemBackground"
app:cardBackgroundColor="#FFFFFF"
app:cardCornerRadius="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<RelativeLayout
安卓:id="@+id/dashBoard"
安卓:layout_width="match_parent"
安卓:layout_height="match_parent"
安卓:layout_above="@+id/b_red"
安卓:layout_alignParentLeft="true"
安卓:layout_alignParentRight="true"
安卓:layout_alignParentTop="true"
安卓:layout_marginBottom="10dp" >
</RelativeLayout>
</安卓.support.v7.widget.CardView>
<Button
安卓:id="@+id/b_red"
安卓:layout_width="65dp"
安卓:layout_height="40dp"
安卓:layout_alignParentBottom="true"
安卓:layout_alignParentLeft="true"
安卓:background="#FF0000" />
<Button
安卓:id="@+id/b_green"
安卓:layout_width="65dp"
安卓:layout_height="40dp"
安卓:layout_alignParentBottom="true"
安卓:layout_toRightOf="@+id/b_red"
安卓:background="#00FF00" />
<Button
安卓:id="@+id/b_blue"
安卓:layout_width="65dp"
安卓:layout_height="40dp"
安卓:layout_alignParentBottom="true"
安卓:layout_toRightOf="@+id/b_green"
安卓:background="#0000FF" />
<Button
安卓:id="@+id/b_orange"
安卓:layout_width="65dp"
安卓:layout_height="40dp"
安卓:layout_alignParentBottom="true"
安卓:layout_toRightOf="@+id/b_blue"
安卓:background="#FF9900" />
<Button
安卓:id="@+id/button5"
安卓:layout_width="60dp"
安卓:layout_height="40dp"
安卓:layout_alignParentBottom="true"
安卓:layout_alignParentRight="true"
安卓:text="Clear" />
有人能帮我修一下吗
共 (0) 个答案