/** Handles mouse down events and starts the corresponding tracker. */
public void mouseDown(MouseEvent e, int x, int y) {
// on MS-Windows NT: AWT generates additional mouse down events
// when the left button is down && right button is clicked.
// To avoid dead locks we ignore such events
if (fChild != null) {
return;
}
view().freezeView();
Handle handle = view().findHandle(e.getX(), e.getY());
if (handle != null) {
fChild = createHandleTracker(view(), handle);
} else {
Figure figure = drawing().findFigure(e.getX(), e.getY());
if (figure != null) {
fChild = createDragTracker(figure);
} else {
if (!e.isShiftDown()) {
view().clearSelection();
}
fChild = createAreaTracker();
}
}
fChild.mouseDown(e, x, y);
fChild.activate();
}
public ToolButton(PaletteListener listener, String iconName, String name, Tool tool) {
super(listener);
tool.addToolListener(this);
setEnabled(tool.isUsable());
// use a Mediatracker to ensure that all the images are initially loaded
Iconkit kit = Iconkit.instance();
if (kit == null) {
throw new JHotDrawRuntimeException("Iconkit instance isn't set");
}
Image im[] = new Image[3];
im[0] = kit.loadImageResource(iconName + "1.gif");
im[1] = kit.loadImageResource(iconName + "2.gif");
im[2] = kit.loadImageResource(iconName + "3.gif");
MediaTracker tracker = new MediaTracker(this);
for (int i = 0; i < 3; i++) {
tracker.addImage(im[i], i);
}
try {
tracker.waitForAll();
} catch (Exception e) {
// ignore exception
}
fIcon = new PaletteIcon(new Dimension(24, 24), im[0], im[1], im[2]);
fTool = tool;
fName = name;
setIcon(new ImageIcon(im[0]));
setPressedIcon(new ImageIcon(im[1]));
setSelectedIcon(new ImageIcon(im[2]));
setToolTipText(name);
}
/** Handles mouse up events. The events are forwarded to the current tracker. */
public void mouseUp(MouseEvent e, int x, int y) {
view().unfreezeView();
if (fChild != null) { // JDK1.1 doesn't guarantee mouseDown, mouseDrag, mouseUp
fChild.mouseUp(e, x, y);
fChild.deactivate();
fChild = null;
}
}
private void setTool(Tool t, String name) {
if (fTool != null) {
fTool.deactivate();
}
fTool = t;
if (fTool != null) {
showStatus(name);
fTool.activate();
}
}
/** Handles mouse drag events. The events are forwarded to the current tracker. */
public void mouseDrag(MouseEvent e, int x, int y) {
if (fChild != null) { // JDK1.1 doesn't guarantee mouseDown, mouseDrag, mouseUp
fChild.mouseDrag(e, x, y);
}
}