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Home » Modeling » Graphiti » Know the Co-ordinates(Move Shape into another shape completely)

Thu, 27 October 2011 06:42

Eclipse User

Hi ,
I have to restrict move of a shape into another shape , i have done the coding in the
canMoveShape method of my MoveFeature, but when the shape is completely inside another
shape then the validation fails.
Can someone tell me what's the best way to add such a restriction.

Regards,
Mak

Re: Know the Co-ordinates [message #753476 is a reply to message #753456]

Thu, 27 October 2011 08:32

Eclipse User

can you please show us the code of your canMoveShape method?

Re: Know the Co-ordinates [message #753673 is a reply to message #753476]

Fri, 28 October 2011 05:56

Eclipse User

ContainerShape shapeToMove = (ContainerShape) context.getPictogramElement();

Object obj = getBusinessObjectForPictogramElement(shapeToMove);

if (obj instanceof A || obj instanceof B|| obj instanceof C) {

ContainerShape container = shapeToMove.getContainer();

int containerWidth = container.getGraphicsAlgorithm().getWidth();
int containerHeight = container.getGraphicsAlgorithm().getHeight();

int shapeWidth = shapeToMove.getGraphicsAlgorithm().getWidth();
int shapeHeight = shapeToMove.getGraphicsAlgorithm().getHeight();

int shapeX = context.getX();
int shapeY = context.getY();

EList<Shape> children = container.getChildren();
for (Shape node : children) {

if (node instanceof ContainerShape && node != shapeToMove) {

int nodeX = node.getGraphicsAlgorithm().getX();
int nodeY = node.getGraphicsAlgorithm().getY();

int nodeWitdth = node.getGraphicsAlgorithm().getWidth();
int nodeHeight = node.getGraphicsAlgorithm().getHeight();

if ((nodeY < shapeY && nodeY + nodeHeight > shapeY) || (nodeY > shapeY && shapeY + shapeHeight > nodeY)) {
if (shapeX > nodeX && shapeX < nodeX + nodeWitdth) {
System.out.println("FC == 1");
return false;
}
if (shapeX == nodeX) {
System.out.println("FC == 2");
return false;
}
if (shapeX < nodeX && shapeX + shapeWidth > nodeX) {
System.out.println("FC == 3");
return false;
}
} else if (nodeY == shapeY) {
if (nodeX < shapeX && nodeX + nodeWitdth > shapeX) {
System.out.println("FC == 4");
return false;
}
if (nodeX == shapeX || nodeX + nodeWitdth == shapeX + shapeWidth) {
System.out.println("FC ==5");
return false;
}
if (nodeX > shapeX && shapeX + shapeWidth < nodeX) {
System.out.println("FC == 6");
return false;
}
}

}
}

// move towards right
if ((shapeX + shapeWidth) > containerWidth) {
System.out.println("move Right");
return false;
}

// move towards left
if (shapeX < 0) {
System.out.println("move left");
return false;
}

// move towards bottom
if ((shapeY + shapeHeight) > containerHeight) {
System.out.println("bottom");
return false;
}

// move towards top;
if (shapeY < 30) {
System.out.println("top");
return false;
}
// if (shapeX + shapeWidth < GraphitiUtil.getCurrentGraphicalViewer().getDiagram().getChildren().get(0).getGraphicsAlgorithm().getWidth())
// {
// shapeToMove.getGraphicsAlgorithm().get
// System.out.println("core");
// return false;
// }
return true;

I have put system.out.print.. to knw the co-ordinates while i am holding(moving) the shape inside another shape completely.
Pls note : container is diagram , the above code checks generically if a shapeToMove can be moved to a new position taking into account all other diagram childern.

[Updated on: Fri, 28 October 2011 06:12] by Moderator

Re: Know the Co-ordinates [message #753676 is a reply to message #753673]

Fri, 28 October 2011 06:06

Eclipse User

Hi,

I think you should not use

ContainerShape container = shapeToMove.getContainer();

but the

getTargetContainer()

from the context.

Andreas

Re: Know the Co-ordinates [message #753946 is a reply to message #753676]

Mon, 31 October 2011 02:27

Eclipse User

Hi Andread,
Thanks for your reply. It was really useful, I din't notice that the

targetContainer

was available in the context.
I have adapted accordingly.

Solved Laughing

Know the Co-ordinates
Move Shape into another shape completely, check using

context.getTargetContainer()

and you can return false where you do not want to allow.

You will have to restrict based on co-ordinates when moving within the same container(adding some padding etc..)

Regards
Mak

[Updated on: Mon, 31 October 2011 02:34] by Moderator

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