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Local Bounds in Java Applets...

I have a class that extends a Canvas. I draw into this canvas by overriding the paint(Graphics g) method. At the start of this method, I get the bounds by calling getBounds() and then I use the width and height to figure out where to draw. So far, I have assumed that the local drawing bounds are from 0,0 to width,height... Will that always be the case?

Also, I tried to call drawRect of the coordinates of the bounds rectangle but it is offset according to the canvas' location within its container Panel... Is there another method I can use to get the Canvas' "local" bounds?

-- Bubba

TimYates

> Will that always be the case?

Are you calling canvas.getBounds()?

Can you post your code?

bganoush

ASKER

Here is some code... First, the code that creates the main panel (that contains a buttons panel and a display panel):

Panel detailPanel = new Panel();
detailPanel.setLayout(new BorderLayout());
detailPanel.setBackground(Color.lightGray);
detailPanel.setSize (600, 150);

Panel detailButtons = new Panel();
detailButtons.add(new Label("Detail"));
detailButtons.add(displayButton);

detailCanvas= new DetailCanvas(someData);
detailCanvas.setSize(600, 115);

detailPanel.add(detailButtons , "North");
detailPanel.add(detailCanvas, "Center");

And here is the beginning of the paint method in class: DetailCanvas

public void paint(Graphics g)
{
Rectangle theRect = getBounds();
int bTop = 0; //theRect.y;
int bLeft = 0; //theRect.x;
int bBottom = theRect.y + theRect.height;
int bRight = theRect.x + theRect.width;
int bWidth = theRect.width;
int bHeight = theRect.height;
int barWidth = theRect.width * 2 / 3;

g.drawRect(bLeft + 5, bTop + 2, bWidth - 10, bHeight - 10);
g.setColor(Color.white);
g.fillRect(bLeft + 5, bTop + 2, bWidth - 10, bHeight - 10);
g.setColor(Color.black);

...

-- Bubba

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TimYates

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bganoush

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