Example usage for org.eclipse.swt.widgets Composite getLocation

Introduction

In this page you can find the example usage for org.eclipse.swt.widgets Composite getLocation.

Prototype

public Point getLocation() 

Source Link

Document

Returns a point describing the receiver's location relative to its parent (or its display if its parent is null), unless the receiver is a shell.

Usage

From source file:Snippet9.java

public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display, SWT.SHELL_TRIM | SWT.H_SCROLL | SWT.V_SCROLL);
    final Composite composite = new Composite(shell, SWT.BORDER);
    composite.setSize(200, 400);//  w  ww .  j  a  va2s.c  om
    final ScrollBar hBar = shell.getHorizontalBar();
    hBar.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event e) {
            Point location = composite.getLocation();
            location.x = -hBar.getSelection();
            composite.setLocation(location);
        }
    });
    final ScrollBar vBar = shell.getVerticalBar();
    vBar.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event e) {
            Point location = composite.getLocation();
            location.y = -vBar.getSelection();
            composite.setLocation(location);
        }
    });
    shell.addListener(SWT.Resize, new Listener() {
        public void handleEvent(Event e) {
            Point size = composite.getSize();
            Rectangle rect = shell.getClientArea();
            hBar.setMaximum(size.x);
            vBar.setMaximum(size.y);
            hBar.setThumb(Math.min(size.x, rect.width));
            vBar.setThumb(Math.min(size.y, rect.height));
            int hPage = size.x - rect.width;
            int vPage = size.y - rect.height;
            int hSelection = hBar.getSelection();
            int vSelection = vBar.getSelection();
            Point location = composite.getLocation();
            if (hSelection >= hPage) {
                if (hPage <= 0)
                    hSelection = 0;
                location.x = -hSelection;
            }
            if (vSelection >= vPage) {
                if (vPage <= 0)
                    vSelection = 0;
                location.y = -vSelection;
            }
            composite.setLocation(location);
        }
    });
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet9.java

public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display, SWT.SHELL_TRIM | SWT.H_SCROLL | SWT.V_SCROLL);
    shell.setText("Snippet 9");
    final Composite composite = new Composite(shell, SWT.BORDER);
    composite.setSize(700, 600);//w  ww . j a  v  a 2 s. c o m
    final Color red = display.getSystemColor(SWT.COLOR_RED);
    composite.addPaintListener(e -> {
        e.gc.setBackground(red);
        e.gc.fillOval(5, 5, 690, 590);
    });
    final ScrollBar hBar = shell.getHorizontalBar();
    hBar.addListener(SWT.Selection, e -> {
        Point location = composite.getLocation();
        location.x = -hBar.getSelection();
        composite.setLocation(location);
    });
    final ScrollBar vBar = shell.getVerticalBar();
    vBar.addListener(SWT.Selection, e -> {
        Point location = composite.getLocation();
        location.y = -vBar.getSelection();
        composite.setLocation(location);
    });
    shell.addListener(SWT.Resize, e -> {
        Point size = composite.getSize();
        Rectangle rect = shell.getClientArea();
        hBar.setMaximum(size.x);
        vBar.setMaximum(size.y);
        hBar.setThumb(Math.min(size.x, rect.width));
        vBar.setThumb(Math.min(size.y, rect.height));
        int hPage = size.x - rect.width;
        int vPage = size.y - rect.height;
        int hSelection = hBar.getSelection();
        int vSelection = vBar.getSelection();
        Point location = composite.getLocation();
        if (hSelection >= hPage) {
            if (hPage <= 0)
                hSelection = 0;
            location.x = -hSelection;
        }
        if (vSelection >= vPage) {
            if (vPage <= 0)
                vSelection = 0;
            location.y = -vSelection;
        }
        composite.setLocation(location);
    });
    shell.setSize(600, 500);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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