paint

I am using following code . and i am getting problem when saving images .i am able to save bitmap but when save bimap it saves also i erased paint also with black color public class FingerPaint extends GraphicsActivity implements ColorPickerDialog.OnColorChangedListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(new MyView(this)); mPaint = new Paint(); mPaint.setAntiAlias(true); mPaint.setDither(true); mPaint.setColor(0xFFFF0000); mPaint.setStyle(Paint.Style.STROKE); mPaint.setStrokeJoin(Paint.Join.ROUND); mPaint

EDIT: solved, look below for my solution. first of all, this is my very first question here, so if I make any mistakes, please tell me. I am trying to write a Mandelbrot Fractal Program in Java, for training purposes. The ideal for all the functionality I want to have is the Fractalizer ( http://www.fractalizer.de/en/ ), but for now, I will be happy with a program that draws the Mandelbrot Set on the screen (instead of, for example, writing it to an image file). Of course, I want the program to be fast, so I thought that I could split the calculation into multiple threads to utilize my multi

I want to create a wall with a blue line outline and black filling. I have only a blue wall now and I tried a couple of the Graphics methods but wasn't working. public void paint(Graphics g) { g.setColor(Color.blue); g.fillRect(x, y, size, size); } First, override paintComponent , not paint . Second, there's no need to re-invent the wheel like that. Instead, use an existing Swing component (e.g. JPanel ), import java.awt.Color; import java.awt.Dimension; import java.awt.FlowLayout; import javax.swing.BorderFactory; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing

I've got a JLayeredPane containing three JPanels, two of which overlap, that I'm painting shapes to. One of the two JPanels that overlap needs to have every shape drawn to it cleared without affecting the shapes drawn to the JPanel under it disappear from the screen. Currently I'm using something like this: Graphics g = pane2.getGraphics(); g.clearRect (0, 0, 1000, 1000); But this not only clears everything painted to pane2 but also pane1, which is under it. So my question is: Is there any way to clear everything painted to one JPanel without affecting anything painted to a JPanel under it? I

i think of to write primitive snake. i have window where program paints random lines. but i can't think up how to catch pressed key to change direction of painted line. class QUpdatingPathIte : public QGraphicsPathItem { void advance(int phase) { if (phase == 0) return; int x,y; int w,a,s,d; char c; // // HOW TO MAKE THIS HERE? (i had done early in console application) // but i can't do this in GUI , what should i do? scanf("%c",&c); if (c=='w') { x=-20; y=0; } else if (c=='s') { x=20; y=0; } else if (c=='a') { x=0; y=-20; } else if(c=='d') { x=0; y=20; } QPainterPath p = path(); p.lineTo(x, y

I want to implement eraser for my painting app . I am able to erase with the following code paint.setColor(0x00000000); paint.setAlpha(0x00); But after erasing when you start painting again it does not paint properly so any idea to erase paint please suggest. Try the below code. paint.setAlpha(0xFF);//transperent color paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));//clear the draw Also have a look at the sample FingerPaint.java in the api demos under the folder graphics. setAlpha(int a) Helper to setColor(), that only assigns the color's alpha value, leaving its r,g,b values