Re: Help with writing to a BufferedImage

From:

Vova Reznik <address@mail.com>

Newsgroups:

comp.lang.java.gui

Date:

Thu, 11 May 2006 20:03:31 GMT

Message-ID:

<nMM8g.69644$_S7.44684@newssvr14.news.prodigy.com>

Casper B. wrote:

I have a method which will create a buffered image with a diagonal line
across. For some reason I can not specify the color of this line (nor
the background) but I will end up with a black and white image.

--- cut ---

    public Image buildDiagonalImage(Rectangle2D rect)
    {
    int width = (int)rect.getWidth();
    int height = (int)rect.getHeight();

    // Create buffered image that does not support transparency
    BufferedImage bimage = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);

    GraphicsEnvironment ge =
GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice gs = ge.getDefaultScreenDevice();
    GraphicsConfiguration gc = gs.getDefaultConfiguration();

    // Create an image that does not support transparency
    bimage = gc.createCompatibleImage(width, height, Transparency.OPAQUE);

    bimage.getGraphics().setColor(Color.BLUE); // <-- Has no effect
    bimage.getGraphics().drawLine(0,0,width, height);

    return bimage;
    }

--- cut ---

Can anyone spot what I am doing wrong? It would be much appreciated.

Casper

How about being simple?

int width = (int) rect.getWidth();
int height = (int) rect.getHeight();

BufferedImage bimage = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics g = bimage.getGraphics();
g.setColor(Color.RED);
g.fillRect(0, 0, width, height);
g.setColor(Color.BLUE);
g.drawLine(0, 0, width, height);