private void mouseMove(GwtEvent<? extends EventHandler> event) {
int[] coord = getCoordinates(event);
int x = coord[0];
int y = coord[1];
if (isMouseDown) {
// Do panning
int dx = x - previousX;
int dy = y - previousY;
if (draggableNode != null) {
WidgetStyle.setCursor(canvas, Cursor.POINTER);
double scale = canvas.getScale();
int scaleDeltaX = (int) (dx / scale);
int scaleDeltaY = (int) (dy / scale);
diagramPane.drag(draggableNode, scaleDeltaX, scaleDeltaY);
} else {
WidgetStyle.setCursor(canvas, Cursor.DEFAULT);
diagramPane.translate(dx, dy);
diagramPane.update();
}
previousX = x;
previousY = y;
isDragging = true;
} else {
diagramPane.hover(x, y);
}
}
private void centreObject(GraphObject obj) {
// Centre selected object
// PathwayCanvas c = diagramPane.getCanvas();
double scale = canvas.getScale();
Point objPos = obj.getPosition();
double objX = objPos.getX();
double objY = objPos.getY();
double x = (objX * -1.0 * scale) + (canvas.getCoordinateSpaceWidth() / 2);
double y = (objY * -1.0 * scale) + (canvas.getCoordinateSpaceHeight() / 2);
diagramPane.reset();
diagramPane.scale(scale);
diagramPane.translate(x, y, true);
diagramPane.hideTooltip();
}