public void paintComponent(Graphics g) {
clearScreen(g);
drawGrid(g);
drawElements(g);
if (drawBondLine == true) {
Bond.drawDrag(g, Color.MAGENTA, elist.getSelected(), currentX, currentY);
}
if (drawArrowLine == true) {
Arrow.drawDrag(g, Color.BLUE, elist.getSelected(), currentX, currentY);
}
drawConnections(g);
}
// ***************** KeyListener ****************
@Override
public void keyPressed(KeyEvent e) {
// TODO Auto-generated method stub
if (e.getKeyCode() == 8) // if delete key is pressed
{
MoleculeComponent currentElement = elist.getSelected();
if (currentElement != null) {
// Clear any lines being drawn (cancel connections)
drawBondLine = false;
drawArrowLine = false;
elist.removeSelected();
mmc.view.displayAttributes(null);
repaint();
}
} else if (e.getKeyCode() == e.VK_ESCAPE) // if user hits ESC
{
if (drawBondLine == true) // and there is a bond being drawn
{
drawBondLine = false; // cancel that bond
repaint();
}
}
}
// ***************** MouseListener *****************
public void mouseReleased(MouseEvent e) {
currentX = getGraphCoordinateX(e.getX());
currentY = getGraphCoordinateY(e.getY());
MoleculeComponent clickedOn = elist.getClickedComponent(e.getX(), e.getY());
if (drawArrowLine || drawBondLine) // if connection is being made
{
if (clickedOn != null && elist.getSelected() != null) // if released on valid component
{
if (clickedOn.getClass() == Element.class
&& (rightPressed && !leftPressed)) { // if it's a bond
elist.add(new Bond(elist.getSelected(), clickedOn));
} else if (clickedOn.getClass() == Element.class && (leftPressed && !rightPressed)) {
elist.add(new Arrow(elist.getSelected(), clickedOn));
}
}
drawArrowLine = false;
drawBondLine = false;
repaint();
} else // connection is not being made
{
if (clickedOn != null) // if released on valid component
{
} else // Didn't click on valid component
{
if (leftPressed && !rightPressed) // If mouse button clicked was left
{
elist.add(new Element(currentX, currentY));
}
}
}
}
