Hi,

I have two boxes on the flowchart that are attached to another bigger box.

I have set the autoroute on the flowchart to true. and routingoption to during create and modify.

Also, the create lines orthogonally property is set.

So, when I run  the application, the applet comes up with these three boxes.

Now I drag a line to connect the two smaller boxes. There should be at least 3 control points created.

Now, if I move the bigger box, the smaller boxes also move with him, but the arrow position is not retained.

Once I release the mouse after repositioning, the arrow is redrawn.

Is there a way I can make the arrow retain state during the drag of the master box?

private void initialize() {
flowChart.setSelectionOnTop(false);

flowChart.setArrowStyle(ArrowStyle.Cascading);
flowChart.setRouteArrows(true);
flowChart.getRoutingOptions().setTriggerRerouting(
RerouteArrows.WhileCreating | RerouteArrows.WhenModified);
}

private void routeTest() {
flowChart = new FlowChart();
initialize();

this.getContentPane().add(flowChart);

Box one = new Box(flowChart);
one.setBounds(5, 5, 10, 10);

Box two = new Box(flowChart);
two.setBounds(20, 20, 10, 10);

Box three = new Box(flowChart);
three.setBounds(2, 2, 50, 50);

flowChart.add(three);
flowChart.add(two);
flowChart.add(one);

one.attachTo(three, AttachToNode.TopCenter);
two.attachTo(three, AttachToNode.TopCenter);
}

private FlowChart flowChart;

 

Thanks,
Praveen

Hi Stoyan,

There is another problem I see with this. If I add this line in the initialize method, to go into the pixel mode:
[code]
flowChart.setMeasureUnit(GraphicsUnit.Pixel);

[/code]

I see that everytime I move the outer containing box, the arrows change their routing. Can this be avoided somehow?

Thanks,
Praveen

Hi,

I do not frequently change the MeasureUnit. I always use Pixels.

Are there some standard routing-options for Pixels that will make it work like inches to?

Thanks,
Praveen

Hi Stoyan,

I tried the following code

[code]
float gridSize = this.getRoutingOptions().getGridSize();
float nvs = this.getRoutingOptions().getNodeVicinitySize();

this.setMeasureUnit(GraphicsUnit.Pixel);

this.getRoutingOptions().setGridSize(gridSize * Toolkit.getDefaultToolkit().getScreenResolution());
this.getRoutingOptions().setNodeVicinitySize(nvs * Toolkit.getDefaultToolkit().getScreenResolution());

[/code]

and it does't work, actually makes it a lot worse.
Or, I guess I didn't understand what you were saying down there correctly. Should I be trying something else?

Thanks,
Praveen

Hi Praveen,

That code converts from inches to pixels, while the default unit is points, so you probably need point-to-pixel conversion? To get that, divide the result from the above code by 72.

I hope that helps,
Stoyan

Hi,

Do not enable the AutoRoute property if you need the arrows to be routed only once, but call the Route() method just after creating an arrow.

I hope that helps,
Stoyan