java - 1 つのコンポーネントを全画面表示にする

Question

ボタンをクリックするとJPanelが全画面表示になり、エスケープを押すと再び元に戻ろうとしています。

ウィンドウを全画面表示にすることはできましたが、コンポーネントを追加して他のコンテナからコンポーネントを削除するため、最終的に空白の JPanel が表示されます。

全画面表示用に別の JFrame を作成することにしました。そのクラスは次のとおりです (これは内部クラスであるため、myPanel は MyJFrame に既に存在するパネルを参照することに注意してください)。

public class FullScreen extends JFrame {

    private static final long serialVersionUID = 1L;

    private GraphicsDevice device;

    private boolean isFullScreen;

    public FullScreen() {
        this.setContentPane(myPanel);
        this.setUndecorated(true);

        // Fullscreen return
        this.addKeyListener(new KeyListener() {
            @Override
            public void keyPressed(KeyEvent e) {
                // Exit fullscreen when ESC pressed
                if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
                    exitFullScreen();
                }
            }

            @Override
            public void keyReleased(KeyEvent e) {
            }

            @Override
            public void keyTyped(KeyEvent e) {
            }
        });
    }

    public void enterFullScreen() {
        if (!isFullScreen) {
            // Get the current device
            GraphicsEnvironment graphicsEnvironment = 
                    GraphicsEnvironment.getLocalGraphicsEnvironment();
            device = graphicsEnvironment.getDefaultScreenDevice();

            if (device.isFullScreenSupported()) {
                // Make the current window invisible
                MyJFrame.this.setVisible(false);
                // Set the full screen window
                device.setFullScreenWindow(this);
                isFullScreen = true;
            }
        }
    }

    public void exitFullScreen() {
        if (isFullScreen) {
            // Reset the full screen window
            device.setFullScreenWindow(null);
            MyJFrame.this.setVisible(true);
            isFullScreen = false;
        }
    }
}

これを達成する方法について他に何か素晴らしいアイデアはありますか?

score 3 · Accepted Answer

このようなものは問題ないようです（改善および適応する必要があります）：

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

class TestFullScreenPanel {

    private static class FSPanel implements ActionListener {
        private JPanel panel;
        private JButton button;
        private boolean fullScreen = false;
        private Container previousContentPane;

        public FSPanel(String label) {
            panel = new JPanel(new BorderLayout());
            button = new JButton(label);
            button.addActionListener(this);
            panel.add(button);
        }

        public JComponent getComponent() {
            return panel;
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            if (!fullScreen) {
                goFullScreen();
            } else {
                ungoFullScreen();
            }
        }

        private void goFullScreen() {
            Window w = SwingUtilities.windowForComponent(button);
            if (w instanceof JFrame) {
                JFrame frame = (JFrame) w;
                frame.dispose();
                frame.setUndecorated(true);
                frame.getGraphicsConfiguration().getDevice().setFullScreenWindow(w);
                previousContentPane = frame.getContentPane();
                frame.setContentPane(button);
                frame.revalidate();
                frame.repaint();
                frame.setVisible(true);
                fullScreen = true;
            }
        }

        private void ungoFullScreen() {
            Window w = SwingUtilities.windowForComponent(button);
            if (w instanceof JFrame) {
                JFrame frame = (JFrame) w;
                frame.dispose();
                frame.setUndecorated(false);
                frame.getGraphicsConfiguration().getDevice().setFullScreenWindow(null);
                frame.setContentPane(previousContentPane);
                panel.add(button);
                frame.revalidate();
                frame.repaint();
                frame.setVisible(true);
                fullScreen = false;
            }
        }
    }

    TestFullScreenPanel() {
        final JFrame f = new JFrame(TestFullScreenPanel.class.getSimpleName());
        f.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
        f.add(new FSPanel("Center").getComponent(), BorderLayout.CENTER);
        f.add(new FSPanel("North").getComponent(), BorderLayout.NORTH);
        f.add(new FSPanel("South").getComponent(), BorderLayout.SOUTH);
        f.add(new FSPanel("West").getComponent(), BorderLayout.WEST);
        f.add(new FSPanel("East").getComponent(), BorderLayout.EAST);
        f.setSize(800, 600);
        f.setLocationByPlatform(true);
        f.setVisible(true);
    }

    public static void main(String[] args) {
        // start the GUI on the EDT
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new TestFullScreenPanel();
            }
        });
    }
}

PS: の処分はJFrame、setUndecorated 状態を変更するためだけに存在します。

score 1 · Accepted Answer

extend JFrameこのオブジェクトをローカル変数として作成しないでください
JFrameデフォルトではに反応しませKeyEventsんKeyListener。JPanel
Swing JComponentsに KeyListenerを使用しないでください。それ以外の場合はJPanel#setFocusableを使用する必要があります
の代わりにKeyBindingsを使用しますKeyListener
@camickr の Escape を使用

.

import java.awt.Dimension;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;

public class FullScreen {

    private static final long serialVersionUID = 1L;
    private GraphicsDevice device;
    private JButton button = new JButton("Close Meeee");
    private JPanel myPanel = new JPanel();
    private JFrame frame = new JFrame();

    public FullScreen() {
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                System.exit(0);
            }
        });
        myPanel.setFocusable(true);
        myPanel.add(button);
        frame.add(myPanel);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setUndecorated(true);
        frame.getRootPane().getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(
                KeyStroke.getKeyStroke("ENTER"), "clickENTER");
        frame.getRootPane().getActionMap().put("clickENTER", new AbstractAction() {
            private static final long serialVersionUID = 1L;

            @Override
            public void actionPerformed(ActionEvent e) {
                exitFullScreen();
            }
        });
        enterFullScreen();
        frame.setVisible(true);

        // code line for @MOD 
        // from http://stackoverflow.com/questions/15152297/how-to-get-extendedstate-width-of-jframe

        Runnable doRun = new Runnable() {
            @Override
            public void run() {
                System.out.println(frame.getBounds());
            }
        };
        SwingUtilities.invokeLater(doRun);
    }

    private void enterFullScreen() {
        GraphicsEnvironment graphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
        device = graphicsEnvironment.getDefaultScreenDevice();
        if (device.isFullScreenSupported()) {
            device.setFullScreenWindow(frame);
            frame.validate();
        }
    }

    private void exitFullScreen() {
        device.setFullScreenWindow(null);
        myPanel.setPreferredSize(new Dimension(400, 300));
        frame.pack();
    }

    public static void main(String[] args) {
        Runnable doRun = new Runnable() {
            @Override
            public void run() {
                FullScreen fullScreen = new FullScreen();
            }
        };
        SwingUtilities.invokeLater(doRun);
    }
}

score 0 · Accepted Answer

これは、非常にうまく機能する例に組み込まれた私のクラスです。フレームを適切に破棄および検証していないと確信しているので、更新できるようにコメントしてください。

public class FullScreenExample extends JFrame {

    public class FullScreen {
        private GraphicsDevice device;
        private JFrame frame;
        private boolean isFullScreen;

        public FullScreen() {
            frame = new JFrame();
            JPanel content = new JPanel();
            content.setLayout(new BorderLayout());
            frame.setContentPane(content);
            frame.setUndecorated(true);

            // Full screen escape
            frame.addKeyListener(new KeyListener() {
                @Override
                public void keyPressed(KeyEvent e) {
                    // Exit full screen when ESC pressed
                    if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
                        exitFullScreen();
                    }
                }

                @Override
                public void keyReleased(KeyEvent e) {}

                @Override
                public void keyTyped(KeyEvent e) {}
            });
        }

        public void enterFullScreen() {
            if (!isFullScreen) {
                // Get the current device
                GraphicsConfiguration config = FullScreenExample.this.getGraphicsConfiguration();
                device = config.getDevice();

                // Remove the panel from the wrapper
                myWrapper.remove(myPanel);
                // Add the panel to the full screen frame
                frame.getContentPane().add(myPanel);
                // Set the full screen window
                device.setFullScreenWindow(frame);
                isFullScreen = true;
            }
        }

        public void exitFullScreen() {
            if (isFullScreen) {
                // Remove the fractal from the full screen frame
                frame.getContentPane().remove(myPanel);
                // Add the panel back to the wrapper
                myWrapper.add(myPanel);
                // Disable full screen
                device.setFullScreenWindow(null);
                // Dispose frame
                frame.dispose();
                // Revalidate window
                FullScreenExample.this.validate();
                isFullScreen = false;
            }
        }
    }

    /*
     * This example uses a main content panel, myPanel
     * and a wrapper to host the panel in the main JFrame, myWrapper.
     */
    private JPanel myPanel, myWrapper;

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                FullScreenExample frame = new FullScreenExample();
                frame.init();
                frame.setVisible(true);
            }
        });
    }

    public void init() {
        // Generate example main window
        JPanel content = new JPanel();
        content.setBorder(new EmptyBorder(5, 5, 5, 5));
        content.setLayout(new BorderLayout());
        this.setContentPane(content);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        myPanel = new JPanel();
        myPanel.setBackground(Color.BLUE);

        // Full screen button and listener
        JButton fullscreen = new JButton("Full Screen");
        final FullScreen fs = new FullScreen();
        fullscreen.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                fs.enterFullScreen();
            }
        });

        myWrapper = new JPanel();
        myWrapper.setLayout(new BorderLayout());
        myWrapper.add(myPanel);

        content.add(myWrapper, BorderLayout.CENTER);
        content.add(fullscreen, BorderLayout.SOUTH);
        this.setBounds(100, 100, 350, 350);
    }
}

java - 1 つのコンポーネントを全画面表示にする

3 に答える 3

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