smoothgradienttitlepane.java

eq跨平台查询工具源码 eq跨平台查询工具源码

     * Installs the fonts and necessary properties on the MetalTitlePane.
     */
    private void installDefaults() {
        setFont(UIManager.getFont("InternalFrame.titleFont", getLocale()));
    }
    
    /**
     * Uninstalls any previously installed UI values.
     */
    private void uninstallDefaults() {
    }

    /**
     * Returns the <code>JMenuBar</code> displaying the appropriate 
     * system menu items.
     */
    protected JMenuBar createMenuBar() {
        menuBar = new SystemMenuBar();
        menuBar.setFocusable(false);
        menuBar.setBorderPainted(true);
        menuBar.add(createMenu());
        return menuBar;
    }

    /**
     * Closes the Window.
     */
    private void close() {
        Window window = getWindow();

        if (window != null) {
            window.dispatchEvent(new WindowEvent(
                                 window, WindowEvent.WINDOW_CLOSING));
        }
    }

    /**
     * Iconifies the Frame.
     */
    private void iconify() {
        Frame frame = getFrame();
        if (frame != null) {
            frame.setExtendedState(state | Frame.ICONIFIED);
        }
    }

    /**
     * Maximizes the Frame.
     */
    private void maximize() {
        Frame frame = getFrame();
        if (frame != null) {
            frame.setExtendedState(state | Frame.MAXIMIZED_BOTH);
        }
    }

    /**
     * Restores the Frame size.
     */
    private void restore() {
        Frame frame = getFrame();

        if (frame == null) {
            return;
        }

        if ((state & Frame.ICONIFIED) != 0) {
            frame.setExtendedState(state & ~Frame.ICONIFIED);
        } else {
            frame.setExtendedState(state & ~Frame.MAXIMIZED_BOTH);
        }
    }

    /**
     * Create the <code>Action</code>s that get associated with the
     * buttons and menu items.
     */
    private void createActions() {
        closeAction = new CloseAction();
        iconifyAction = new IconifyAction();
        restoreAction = new RestoreAction();
        maximizeAction = new MaximizeAction();
    }

    /**
     * Returns the <code>JMenu</code> displaying the appropriate menu items
     * for manipulating the Frame.
     */
    private JMenu createMenu() {
        JMenu menu = new JMenu("");
        if (getWindowDecorationStyle() == JRootPane.FRAME) {
            addMenuItems(menu);
        }
        return menu;
    }

    /**
     * Adds the necessary <code>JMenuItem</code>s to the passed in menu.
     */
    private void addMenuItems(JMenu menu) {
        Locale locale = getRootPane().getLocale();
        JMenuItem mi = menu.add(restoreAction);
        int mnemonic = SmoothGradientUtils.getInt("MetalTitlePane.restoreMnemonic", -1);

        if (mnemonic != -1) {
            mi.setMnemonic(mnemonic);
        }

        mi = menu.add(iconifyAction);
        mnemonic = SmoothGradientUtils.getInt("MetalTitlePane.iconifyMnemonic", -1);
        if (mnemonic != -1) {
            mi.setMnemonic(mnemonic);
        }

        if (Toolkit.getDefaultToolkit().isFrameStateSupported(
                Frame.MAXIMIZED_BOTH)) {
            mi = menu.add(maximizeAction);
            mnemonic =
                SmoothGradientUtils.getInt("MetalTitlePane.maximizeMnemonic", -1);
            if (mnemonic != -1) {
                mi.setMnemonic(mnemonic);
            }
        }

        menu.add(new JSeparator());

        mi = menu.add(closeAction);
        mnemonic = SmoothGradientUtils.getInt("MetalTitlePane.closeMnemonic", -1);
        if (mnemonic != -1) {
            mi.setMnemonic(mnemonic);
        }
    }

    /**
     * Returns a <code>JButton</code> appropriate for placement on the
     * TitlePane.
     */
    private JButton createTitleButton() {
        JButton button = new JButton();

        button.setFocusPainted(false);
        button.setFocusable(false);
        button.setOpaque(true);
        return button;
    }

    /**
     * Creates the Buttons that will be placed on the TitlePane.
     */
    private void createButtons() {
        maximizeIcon = UIManager.getIcon("InternalFrame.maximizeIcon");
        minimizeIcon = UIManager.getIcon("InternalFrame.minimizeIcon");

        closeButton = createTitleButton();
        closeButton.setAction(closeAction);
        closeButton.setText(null);
        closeButton.putClientProperty("paintActive", Boolean.TRUE);
        closeButton.setBorder(handyEmptyBorder);
        closeButton.getAccessibleContext().setAccessibleName("Close");
        closeButton.setIcon(UIManager.getIcon("InternalFrame.closeIcon"));

        iconifyButton = createTitleButton();
        iconifyButton.setAction(iconifyAction);
        iconifyButton.setText(null);
        iconifyButton.putClientProperty("paintActive", Boolean.TRUE);
        iconifyButton.setBorder(handyEmptyBorder);
        iconifyButton.getAccessibleContext().setAccessibleName("Iconify");
        iconifyButton.setIcon(UIManager.getIcon("InternalFrame.iconifyIcon"));

        toggleButton = createTitleButton();
        toggleButton.setAction(restoreAction);
        toggleButton.putClientProperty("paintActive", Boolean.TRUE);
        toggleButton.setBorder(handyEmptyBorder);
        toggleButton.getAccessibleContext().setAccessibleName("Maximize");
        toggleButton.setIcon(maximizeIcon);
    }

    /**
     * Returns the <code>LayoutManager</code> that should be installed on
     * the <code>MetalTitlePane</code>.
     */
    private LayoutManager createLayout() {
        return new TitlePaneLayout();
    }

    /**
     * Updates state dependant upon the Window's active state.
     */
    private void setActive(boolean isActive) {
        if (getWindowDecorationStyle() == JRootPane.FRAME) {
            Boolean activeB = isActive ? Boolean.TRUE : Boolean.FALSE;

            iconifyButton.putClientProperty("paintActive", activeB);
            closeButton.putClientProperty("paintActive", activeB);
            toggleButton.putClientProperty("paintActive", activeB);
        }
        // Repaint the whole thing as the Borders that are used have
        // different colors for active vs inactive
        getRootPane().repaint();
    }

    /**
     * Sets the state of the Window.
     */
    private void setState(int state) {
        setState(state, false);
    }

    /**
     * Sets the state of the window. If <code>updateRegardless</code> is
     * true and the state has not changed, this will update anyway.
     */
    private void setState(int state, boolean updateRegardless) {
        Window w = getWindow();

        if (w != null && getWindowDecorationStyle() == JRootPane.FRAME) {
            if (this.state == state && !updateRegardless) {
                return;
            }
            Frame frame = getFrame();

            if (frame != null) {
                JRootPane rootPane = getRootPane();

                if (((state & Frame.MAXIMIZED_BOTH) != 0) &&
                        (rootPane.getBorder() == null ||
                        (rootPane.getBorder() instanceof UIResource)) &&
                            frame.isShowing()) {
                    rootPane.setBorder(null);
                }
                else if ((state & Frame.MAXIMIZED_BOTH) == 0) {
                    // This is a croak, if state becomes bound, this can
                    // be nuked.
//                    rootPaneUI.installBorder(rootPane);
                }
                if (frame.isResizable()) {
                    if ((state & Frame.MAXIMIZED_BOTH) != 0) {
                        updateToggleButton(restoreAction, minimizeIcon);
                        maximizeAction.setEnabled(false);
                        restoreAction.setEnabled(true);
                    }
                    else {
                        updateToggleButton(maximizeAction, maximizeIcon);
                        maximizeAction.setEnabled(true);
                        restoreAction.setEnabled(false);
                    }
                    if (toggleButton.getParent() == null ||
                        iconifyButton.getParent() == null) {
                        add(toggleButton);
                        add(iconifyButton);
                        revalidate();
                        repaint();
                    }
                    toggleButton.setText(null);
                }
                else {
                    maximizeAction.setEnabled(false);
                    restoreAction.setEnabled(false);
                    if (toggleButton.getParent() != null) {
                        remove(toggleButton);
                        revalidate();
                        repaint();
                    }
                }
            }
            else {
                // Not contained in a Frame
                maximizeAction.setEnabled(false);
                restoreAction.setEnabled(false);
                iconifyAction.setEnabled(false);
                remove(toggleButton);
                remove(iconifyButton);
                revalidate();
                repaint();
            }
            closeAction.setEnabled(true);
            this.state = state;
        }
    }

    /**
     * Updates the toggle button to contain the Icon <code>icon</code>, and
     * Action <code>action</code>.
     */
    private void updateToggleButton(Action action, Icon icon) {
        toggleButton.setAction(action);
        toggleButton.setIcon(icon);
        toggleButton.setText(null);
    }

    /**
     * Returns the Frame rendering in. This will return null if the
     * <code>JRootPane</code> is not contained in a <code>Frame</code>.
     */
    private Frame getFrame() {
        Window window = getWindow();

        if (window instanceof Frame) {
            return (Frame)window;
        }
        return null;
    }

    /**
     * Returns the <code>Window</code> the <code>JRootPane</code> is
     * contained in. This will return null if there is no parent ancestor
     * of the <code>JRootPane</code>.
     */
    private Window getWindow() {
        return window;
    }

    /**
     * Returns the String to display as the title.
     */
    private String getTitle() {
        Window w = getWindow();

        if (w instanceof Frame) {
            return ((Frame)w).getTitle();
        }
        else if (w instanceof Dialog) {
            return ((Dialog)w).getTitle();
        }
        return null;
    }

    /**
     * Renders the TitlePane.
     */
    public void paintComponent(Graphics g)  {
        // As state isn't bound, we need a convenience place to check
        // if it has changed. Changing the state typically changes the
        if (getFrame() != null) {
            setState(getFrame().getExtendedState());
        }
        Window window = getWindow();
        boolean leftToRight = (window == null) ?
                               getRootPane().getComponentOrientation().isLeftToRight() :
                               window.getComponentOrientation().isLeftToRight();