/** The mouse was dragged - either draw a marquee or move some classes. */
public void mouseDragged(MouseEvent evt) {
if (isButtonOne(evt)) {
if (marquee.isActive()) {
Rectangle oldRect = marquee.getRectangle();
marquee.move(evt.getX(), evt.getY());
Rectangle newRect = (Rectangle) marquee.getRectangle().clone();
if (oldRect != null) {
newRect.add(oldRect);
}
newRect.width++;
newRect.height++;
graphEditor.repaint(newRect);
} else if (rubberBand != null) {
rubberBand.setEnd(evt.getX(), evt.getY());
graphEditor.repaint();
} else {
if (!selection.isEmpty()) {
int deltaX = snapToGrid(evt.getX() - dragStartX);
int deltaY = snapToGrid(evt.getY() - dragStartY);
if (resizing) {
selection.resize(deltaX, deltaY);
} else if (moving) {
selection.move(deltaX, deltaY);
}
}
graphEditor.repaint();
}
}
}
/** A key was pressed in the graph editor. */
public void keyPressed(KeyEvent evt) {
boolean handled = true; // assume for a start that we are handling the
// key here
if (isArrowKey(evt)) {
if (evt.isControlDown()) { // resizing
if (!resizing) startKeyboardResize();
setKeyDelta(evt);
selection.resize(keyDeltaX, keyDeltaY);
} else if (evt.isShiftDown()) { // moving targets
if (!moving) startKeyboardMove();
setKeyDelta(evt);
selection.move(keyDeltaX, keyDeltaY);
} else { // navigate the diagram
navigate(evt);
}
} else if (isPlusOrMinusKey(evt)) {
resizeWithFixedRatio(evt);
}
// dependency selection
else if (evt.getKeyCode() == KeyEvent.VK_PAGE_UP || evt.getKeyCode() == KeyEvent.VK_PAGE_DOWN) {
selectDependency(evt);
}
// post context menu
else if (evt.getKeyCode() == KeyEvent.VK_SPACE || evt.getKeyCode() == KeyEvent.VK_ENTER) {
postMenu();
}
// 'A' (with any or no modifiers) selects all
else if (evt.getKeyCode() == KeyEvent.VK_A) {
selectAll();
}
// Escape removes selections
else if (evt.getKeyCode() == KeyEvent.VK_ESCAPE) {
if (moving || resizing) {
endMove();
}
clearSelection();
} else {
handled = false;
}
if (handled) evt.consume();
graphEditor.repaint();
}
