public int getTitleHeight(Component c) { int th = 21; int fh = getBorderInsets(c).top + getBorderInsets(c).bottom; if (c instanceof JDialog) { JDialog dialog = (JDialog) c; th = dialog.getSize().height - dialog.getContentPane().getSize().height - fh - 1; if (dialog.getJMenuBar() != null) { th -= dialog.getJMenuBar().getSize().height; } } else if (c instanceof JInternalFrame) { JInternalFrame frame = (JInternalFrame) c; th = frame.getSize().height - frame.getRootPane().getSize().height - fh - 1; if (frame.getJMenuBar() != null) { th -= frame.getJMenuBar().getSize().height; } } else if (c instanceof JRootPane) { JRootPane jp = (JRootPane) c; if (jp.getParent() instanceof JFrame) { JFrame frame = (JFrame) c.getParent(); th = frame.getSize().height - frame.getContentPane().getSize().height - fh - 1; if (frame.getJMenuBar() != null) { th -= frame.getJMenuBar().getSize().height; } } else if (jp.getParent() instanceof JDialog) { JDialog dialog = (JDialog) c.getParent(); th = dialog.getSize().height - dialog.getContentPane().getSize().height - fh - 1; if (dialog.getJMenuBar() != null) { th -= dialog.getJMenuBar().getSize().height; } } } return th; }
public void actionPerformed(ActionEvent e) { JDesktopPane dp = (JDesktopPane) e.getSource(); String key = getName(); if (CLOSE == key || MAXIMIZE == key || MINIMIZE == key || RESTORE == key) { setState(dp, key); } else if (ESCAPE == key) { if (sourceFrame == dp.getSelectedFrame() && focusOwner != null) { focusOwner.requestFocus(); } moving = false; resizing = false; sourceFrame = null; focusOwner = null; } else if (MOVE == key || RESIZE == key) { sourceFrame = dp.getSelectedFrame(); if (sourceFrame == null) { return; } moving = (key == MOVE) ? true : false; resizing = (key == RESIZE) ? true : false; focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner(); if (!SwingUtilities.isDescendingFrom(focusOwner, sourceFrame)) { focusOwner = null; } sourceFrame.requestFocus(); } else if (LEFT == key || RIGHT == key || UP == key || DOWN == key || SHRINK_RIGHT == key || SHRINK_LEFT == key || SHRINK_UP == key || SHRINK_DOWN == key) { JInternalFrame c = dp.getSelectedFrame(); if (sourceFrame == null || c != sourceFrame || KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner() != sourceFrame) { return; } Insets minOnScreenInsets = UIManager.getInsets("Desktop.minOnScreenInsets"); Dimension size = c.getSize(); Dimension minSize = c.getMinimumSize(); int dpWidth = dp.getWidth(); int dpHeight = dp.getHeight(); int delta; Point loc = c.getLocation(); if (LEFT == key) { if (moving) { c.setLocation( loc.x + size.width - MOVE_RESIZE_INCREMENT < minOnScreenInsets.right ? -size.width + minOnScreenInsets.right : loc.x - MOVE_RESIZE_INCREMENT, loc.y); } else if (resizing) { c.setLocation(loc.x - MOVE_RESIZE_INCREMENT, loc.y); c.setSize(size.width + MOVE_RESIZE_INCREMENT, size.height); } } else if (RIGHT == key) { if (moving) { c.setLocation( loc.x + MOVE_RESIZE_INCREMENT > dpWidth - minOnScreenInsets.left ? dpWidth - minOnScreenInsets.left : loc.x + MOVE_RESIZE_INCREMENT, loc.y); } else if (resizing) { c.setSize(size.width + MOVE_RESIZE_INCREMENT, size.height); } } else if (UP == key) { if (moving) { c.setLocation( loc.x, loc.y + size.height - MOVE_RESIZE_INCREMENT < minOnScreenInsets.bottom ? -size.height + minOnScreenInsets.bottom : loc.y - MOVE_RESIZE_INCREMENT); } else if (resizing) { c.setLocation(loc.x, loc.y - MOVE_RESIZE_INCREMENT); c.setSize(size.width, size.height + MOVE_RESIZE_INCREMENT); } } else if (DOWN == key) { if (moving) { c.setLocation( loc.x, loc.y + MOVE_RESIZE_INCREMENT > dpHeight - minOnScreenInsets.top ? dpHeight - minOnScreenInsets.top : loc.y + MOVE_RESIZE_INCREMENT); } else if (resizing) { c.setSize(size.width, size.height + MOVE_RESIZE_INCREMENT); } } else if (SHRINK_LEFT == key && resizing) { // Make sure we don't resize less than minimum size. if (minSize.width < (size.width - MOVE_RESIZE_INCREMENT)) { delta = MOVE_RESIZE_INCREMENT; } else { delta = size.width - minSize.width; } // Ensure that we keep the internal frame on the desktop. if (loc.x + size.width - delta < minOnScreenInsets.left) { delta = loc.x + size.width - minOnScreenInsets.left; } c.setSize(size.width - delta, size.height); } else if (SHRINK_RIGHT == key && resizing) { // Make sure we don't resize less than minimum size. if (minSize.width < (size.width - MOVE_RESIZE_INCREMENT)) { delta = MOVE_RESIZE_INCREMENT; } else { delta = size.width - minSize.width; } // Ensure that we keep the internal frame on the desktop. if (loc.x + delta > dpWidth - minOnScreenInsets.right) { delta = (dpWidth - minOnScreenInsets.right) - loc.x; } c.setLocation(loc.x + delta, loc.y); c.setSize(size.width - delta, size.height); } else if (SHRINK_UP == key && resizing) { // Make sure we don't resize less than minimum size. if (minSize.height < (size.height - MOVE_RESIZE_INCREMENT)) { delta = MOVE_RESIZE_INCREMENT; } else { delta = size.height - minSize.height; } // Ensure that we keep the internal frame on the desktop. if (loc.y + size.height - delta < minOnScreenInsets.bottom) { delta = loc.y + size.height - minOnScreenInsets.bottom; } c.setSize(size.width, size.height - delta); } else if (SHRINK_DOWN == key && resizing) { // Make sure we don't resize less than minimum size. if (minSize.height < (size.height - MOVE_RESIZE_INCREMENT)) { delta = MOVE_RESIZE_INCREMENT; } else { delta = size.height - minSize.height; } // Ensure that we keep the internal frame on the desktop. if (loc.y + delta > dpHeight - minOnScreenInsets.top) { delta = (dpHeight - minOnScreenInsets.top) - loc.y; } c.setLocation(loc.x, loc.y + delta); c.setSize(size.width, size.height - delta); } } else if (NEXT_FRAME == key || PREVIOUS_FRAME == key) { dp.selectFrame((key == NEXT_FRAME) ? true : false); } else if (NAVIGATE_NEXT == key || NAVIGATE_PREVIOUS == key) { boolean moveForward = true; if (NAVIGATE_PREVIOUS == key) { moveForward = false; } Container cycleRoot = dp.getFocusCycleRootAncestor(); if (cycleRoot != null) { FocusTraversalPolicy policy = cycleRoot.getFocusTraversalPolicy(); if (policy != null && policy instanceof SortingFocusTraversalPolicy) { SortingFocusTraversalPolicy sPolicy = (SortingFocusTraversalPolicy) policy; boolean idc = sPolicy.getImplicitDownCycleTraversal(); try { sPolicy.setImplicitDownCycleTraversal(false); if (moveForward) { KeyboardFocusManager.getCurrentKeyboardFocusManager().focusNextComponent(dp); } else { KeyboardFocusManager.getCurrentKeyboardFocusManager().focusPreviousComponent(dp); } } finally { sPolicy.setImplicitDownCycleTraversal(idc); } } } } }