Java Window.setLocation方法代碼示例

import java.awt.Window; //導入方法依賴的package包/類
public static void centre(Window w) {
    Dimension us = w.getSize();
    Dimension them = Toolkit.getDefaultToolkit().getScreenSize();
    int newX = (them.width - us.width) / 2;
    int newY = (them.height - us.height) / 2;
    w.setLocation(newX, newY);
}
 

import java.awt.Window; //導入方法依賴的package包/類
/**
     * This static method can be used to restore the window x,y, position (but
     * not size) of a window based on the Window class name. This is a separate
     * mechanism than the instance methods saveSettings and loadSettings.
     *
     * @param window the window to restore
     * @param prefs user preferences node
     * @see #saveWindowLocation
     */
    public static void restoreWindowLocation(Window window, Preferences prefs) {
        Dimension scr = Toolkit.getDefaultToolkit().getScreenSize();
        String name = window.getClass().getName();
        int x = prefs.getInt(name + ".XPosition", 0);
        x = (int) Math.min(scr.getWidth() - window.getWidth() - 20, x);
        int y = prefs.getInt(name + ".YPosition", 0);
        y = (int) Math.min(scr.getHeight() - window.getHeight() - 20, y);
        window.setLocation(x, y);
//        log.info("restored window "+window.getName()+" to location x,y="+x+","+y);
    }
 

import java.awt.Window; //導入方法依賴的package包/類
public static void main(String[] args) {

        Window window = new Window(null);
        window.setSize(100, 100);
        window.setLocationByPlatform(true);

        if (!window.isLocationByPlatform()) {
            throw new RuntimeException("Location by platform is not set");
        }

        window.setLocation(10, 10);

        if (window.isLocationByPlatform()) {
            throw new RuntimeException("Location by platform is not cleared");
        }

        window.setLocationByPlatform(true);
        window.setBounds(20, 20, 50, 50);

        if (window.isLocationByPlatform()) {
            throw new RuntimeException("Location by platform is not cleared");
        }

        window.setLocationByPlatform(true);
        window.setVisible(false);

        if (window.isLocationByPlatform()) {
            throw new RuntimeException("Location by platform is not cleared");
        }

        window.setLocationByPlatform(true);
        window.setVisible(true);

        if (window.isLocationByPlatform()) {
            throw new RuntimeException("Location by platform is not cleared");
        }

        window.dispose();
    }
 

import java.awt.Window; //導入方法依賴的package包/類
public void testChildPropertiesWithDialogAsParent() {

        parentDialog = new Dialog((Dialog) null, "parent Dialog");
        parentDialog.setSize(WIDTH, HEIGHT);
        parentDialog.setLocation(100, 100);
        parentDialog.setBackground(Color.RED);
        parentLabel = new Label("ParentForegroundAndFont");
        parentFont = new Font("Courier New", Font.ITALIC, 15);
        parentDialog.setForeground(Color.BLUE);
        parentDialog.setFont(parentFont);

        parentDialog.add(parentLabel);
        parentDialog.setVisible(true);

        windowChild = new Window(parentDialog);
        windowChild.setSize(WIDTH, HEIGHT);
        windowChild.setLocation(WIDTH + 200, 100);
        childLabel = new Label("ChildForegroundAndFont");
        windowChild.add(childLabel);
        windowChild.setVisible(true);

        if (parentDialog.getBackground() == windowChild.getBackground()) {
            dispose();
            throw new RuntimeException("Child Window Should NOT Inherit "
                    + "Parent Dialog's Background Color");
        }
        if (parentDialog.getForeground() == windowChild.getForeground()) {
            dispose();
            throw new RuntimeException("Child Window Should NOT Inherit "
                    + "Parent Dialog's Foreground Color");
        }
        if (parentDialog.getFont() == windowChild.getFont()) {
            dispose();
            throw new RuntimeException("Child Window Should NOT Inherit "
                    + "Parent Dialog's Font Color");
        }
    }
 

import java.awt.Window; //導入方法依賴的package包/類
public void testChildPropertiesWithFrameAsParent() {

        parentFrame = new Frame("parent Frame");
        parentFrame.setSize(WIDTH, HEIGHT);
        parentFrame.setLocation(100, 400);
        parentFrame.setBackground(Color.BLUE);
        parentLabel = new Label("ParentForegroundAndFont");
        parentFont = new Font("Courier New", Font.ITALIC, 15);
        parentFrame.setForeground(Color.RED);
        parentFrame.setFont(parentFont);
        parentFrame.add(parentLabel);
        parentFrame.setVisible(true);

        frameChildWindow = new Window(parentFrame);
        frameChildWindow.setSize(WIDTH, HEIGHT);
        frameChildWindow.setLocation(WIDTH + 200, 400);
        childLabel = new Label("ChildForegroundAndFont");
        frameChildWindow.add(childLabel);
        frameChildWindow.setVisible(true);

        if (parentFrame.getBackground() == frameChildWindow.getBackground()) {
            dispose();
            throw new RuntimeException("Child Window Should NOT Inherit "
                    + "Parent Frame's Background Color");
        }
        if (parentDialog.getForeground() == windowChild.getForeground()) {
            dispose();
            throw new RuntimeException("Child Window Should NOT Inherit "
                    + "Parent Frame's Foreground Color");
        }
        if (parentDialog.getFont() == windowChild.getFont()) {
            dispose();
            throw new RuntimeException("Child Window Should NOT Inherit "
                    + "Parent Frame's Font Color");
        }
    }
 

import java.awt.Window; //導入方法依賴的package包/類
/** Sets the given window location to the center of the User's screen.
 * @param window Window to center. */
public static void setWindowCenterOfScreen(Window window) {
	Dimension userScreenSize = Toolkit.getDefaultToolkit().getScreenSize();
	window.setLocation(userScreenSize.width/2-window.getSize().width/2, userScreenSize.height/2-window.getSize().height/2);
}