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erenay · Guest

Hi everybody, I'm having a problem with the layout of my application.
When I run the following code, I only see one graph in the frame. I'm
sopposed to see "graphNum" graphs in a row.
This part of code runs when I press the "draw graph" button:

public void run() {
Graph[] graphs = new Graph[graphNum];
JFrame frame = new JFrame();
for(int i=0; i<graphNum; i++){
graphs[i] = new Graph();
SliceVal[] sliceValA = new SliceVal[sliceNum];
for(int j=0;j<sliceNum;j++){
sliceValA[j] = new SliceVal(new BigDecimal(10.0),
colors[j]);
}
graphs[i].setSliceVal(sliceValA);
}
JPanel grafPanel = new JPanel();
graphPanel.setLayout(new GridLayout(1,graphNum));
for (int i=0; i<graphNum; i++) {
grafPanel.add(graphs[i]);
}
frame.getContentPane().add(graphPanel);
frame.setSize(300, 200);
frame.setVisible(true);
}
}

SliceVal class holds the value and color of a slice of the pie chart.
Graph class extends JComponent and has a paint() function in it.
I set the values of slices to 10.0 for simplifying the code

Do you see an error in the code above?
I would appreciate any help, thank you.

Piotr Hrycenko · Guest

erenay napisaÅ‚(a):

Vova Reznik · Guest

erenay wrote:

erenay · Guest

Thanks for the answers.

I used frame.pack(); but it didn't help, the same problem goes on.
This is how the frame looks like:
http://img50.imageshack.us/img50/5034/graph1xz.jpg
graphNum was 4 and sliceNum was 6. When I change the size of the frame,
the graph adjusts itself to an appropriate size.

This is how my Graph class is like:
---------------------------------------------------------------------------------
public class Graph extends JComponent{

public SliceVal[] slices;

public Graph(){
slices = new SliceVal[AProject.sliceNum];
}

public SliceVal[] getSliceVal(){
return this.slices;
}

public void setSliceVal(SliceVal[] slices){
this.slices = slices;
}

public void drawGraph(Graphics2D g, Rectangle area, SliceVal[]
slices) {
...
g.setColor(...);
g.fillArc(...);
}
}

public void paint(Graphics g) {
drawGraph((Graphics2D)g, getBounds(), slices);
}
}
------------------------------------------------------------

Maybe the problem is with getBounds(), returning the coordinate of the
rectangle as (0,0)
I don't know. What should I do?

Vova Reznik · Guest

erenay wrote:

erenay · Guest

Sorry Vova. I've been trying to fix it all day but I failed.
As it can be seen from
http://img459.imageshack.us/img459/5517/graf5gf.jpg
the components are there but they can't be seen.
I set the preferred size and used paintComponent.
I tried things like:
for (int i=0; i<graphNum; i++) {
graphPanel.add(graphs[i]);
graphs[i].repaint();
}
graphPanel.validate();

I wonder if it has something to do with the Graphics object passed to
paintComponent.
I will inform you if I can find a solution.
Thanks anyway.