[gef-dev] Canvas Scrolling problem

[<Shalaj.Shukla@xxxxxxxxxxxxxxxxxx>]

Hi,

 

Is it possible to change the x,y corrdinate of canvas by horizontal and vertical scrolling

I have some draw2d figure on canvas, figures are bound with particular x,y cordinates when i scroll the canvas using following code

it looks that figures are also scrolling but actually figures keep remain on the same place because the x,y position of canvas never change.

 

final static int SIZE = 1000;

setSize(SIZE,SIZE);

final ScrollBar horizontalBar = getHorizontalBar();

horizontalBar.setMaximum(SIZE);

final ScrollBar verticalBar = getVerticalBar();

verticalBar.setMaximum(SIZE);

final Point origin = new Point(0,0);

final Canvas scrollCanvas = this;

addMouseMoveListener(this);

horizontalBar.addListener( SWT.Selection, new Listener() {

public void handleEvent( Event e ) {

int destX = -horizontalBar.getSelection();

scrollCanvas.scroll(

destX, origin.y, origin.x, origin.y, SIZE, SIZE, true );

origin.x = destX;

}

} );

verticalBar.addListener( SWT.Selection, new Listener() {

public void handleEvent( Event e ) {

int destY = -verticalBar.getSelection();

scrollCanvas.scroll(

origin.x, destY, origin.x, origin.y, SIZE, SIZE, true );

origin.y = destY;

}

} );

 

please suggest.

 

Thanks in advance

Shalaj Shukla

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