/**
* Sets the grid being displayed. Reset the cellSize to be the largest that fits the entire grid
* in the current visible area (use default if grid is too large).
*
* @param gr the grid to display
*/
public void setGrid(Grid<?> gr) {
currentLocation = new Location(0, 0);
JViewport vp = getEnclosingViewport(); // before changing, reset
// scroll/pan position
if (vp != null) vp.setViewPosition(new Point(0, 0));
grid = gr;
originRow = originCol = 0;
if (grid.getNumRows() == -1 && grid.getNumCols() == -1) {
numRows = numCols = 2000;
// This determines the "virtual" size of the pan world
} else {
numRows = grid.getNumRows();
numCols = grid.getNumCols();
}
recalculateCellSize(MIN_CELL_SIZE);
}
public boolean isPannableUnbounded() {
return grid != null && (grid.getNumRows() == -1 || grid.getNumCols() == -1);
}