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

Introduction

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

Prototype

public Control[] getChildren() 

Source Link

Document

Returns a (possibly empty) array containing the receiver's children.

Usage

From source file:Snippet115.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new RowLayout(SWT.VERTICAL));
    Composite c1 = new Composite(shell, SWT.BORDER | SWT.NO_RADIO_GROUP);
    c1.setLayout(new RowLayout());
    Composite c2 = new Composite(shell, SWT.BORDER | SWT.NO_RADIO_GROUP);
    c2.setLayout(new RowLayout());
    final Composite[] composites = new Composite[] { c1, c2 };
    Listener radioGroup = new Listener() {
        public void handleEvent(Event event) {
            for (int i = 0; i < composites.length; i++) {
                Composite composite = composites[i];
                Control[] children = composite.getChildren();
                for (int j = 0; j < children.length; j++) {
                    Control child = children[j];
                    if (child instanceof Button) {
                        Button button = (Button) child;
                        if ((button.getStyle() & SWT.RADIO) != 0)
                            button.setSelection(false);
                    }//from  w  w  w.j  a  v a  2 s .c o  m
                }
            }
            Button button = (Button) event.widget;
            button.setSelection(true);
        }
    };
    for (int i = 0; i < 4; i++) {
        Button button = new Button(c1, SWT.RADIO);
        button.setText("Button " + i);
        button.addListener(SWT.Selection, radioGroup);
    }
    for (int i = 0; i < 4; i++) {
        Button button = new Button(c2, SWT.RADIO);
        button.setText("Button " + (i + 4));
        button.addListener(SWT.Selection, radioGroup);
    }
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

---

From source file:org.eclipse.swt.snippets.Snippet115.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 115");
    shell.setLayout(new RowLayout(SWT.VERTICAL));
    Composite c1 = new Composite(shell, SWT.BORDER | SWT.NO_RADIO_GROUP);
    c1.setLayout(new RowLayout());
    Composite c2 = new Composite(shell, SWT.BORDER | SWT.NO_RADIO_GROUP);
    c2.setLayout(new RowLayout());
    final Composite[] composites = new Composite[] { c1, c2 };
    Listener radioGroup = event -> {/*from w ww.  j  a v  a2 s  .c  om*/
        for (int i = 0; i < composites.length; i++) {
            Composite composite = composites[i];
            Control[] children = composite.getChildren();
            for (int j = 0; j < children.length; j++) {
                Control child = children[j];
                if (child instanceof Button) {
                    Button button1 = (Button) child;
                    if ((button1.getStyle() & SWT.RADIO) != 0)
                        button1.setSelection(false);
                }
            }
        }
        Button button2 = (Button) event.widget;
        button2.setSelection(true);
    };
    for (int i = 0; i < 4; i++) {
        Button button = new Button(c1, SWT.RADIO);
        button.setText("Button " + i);
        button.addListener(SWT.Selection, radioGroup);
    }
    for (int i = 0; i < 4; i++) {
        Button button = new Button(c2, SWT.RADIO);
        button.setText("Button " + (i + 4));
        button.addListener(SWT.Selection, radioGroup);
    }
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

---

From source file:org.eclipse.swt.snippets.Snippet6.java

public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Snippet 6");
    shell.setLayout(new GridLayout());
    final Composite c = new Composite(shell, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.numColumns = 3;/*from ww w .  j a  v a2  s . c om*/
    c.setLayout(layout);
    for (int i = 0; i < 10; i++) {
        Button b = new Button(c, SWT.PUSH);
        b.setText("Button " + i);
    }

    Button b = new Button(shell, SWT.PUSH);
    b.setText("add a new button at row 2 column 1");
    final int[] index = new int[1];
    b.addListener(SWT.Selection, e -> {
        Button s = new Button(c, SWT.PUSH);
        s.setText("Special " + index[0]);
        index[0]++;
        Control[] children = c.getChildren();
        s.moveAbove(children[3]);
        shell.layout(new Control[] { s });
    });

    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

---

From source file:Snippet6.java

public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new GridLayout());
    final Composite c = new Composite(shell, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.numColumns = 3;//w  ww.  ja  va2s.co  m
    c.setLayout(layout);
    for (int i = 0; i < 10; i++) {
        Button b = new Button(c, SWT.PUSH);
        b.setText("Button " + i);
    }

    Button b = new Button(shell, SWT.PUSH);
    b.setText("add a new button at row 2 column 1");
    final int[] index = new int[1];
    b.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event e) {
            Button s = new Button(c, SWT.PUSH);
            s.setText("Special " + index[0]);
            index[0]++;
            Control[] children = c.getChildren();
            s.moveAbove(children[3]);
            shell.layout(new Control[] { s });
        }
    });

    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

---

From source file:ScrollWidgetViewFocusIn.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new GridLayout());
    Button b1 = new Button(shell, SWT.PUSH);
    b1.setText("top");
    b1.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
    final ScrolledComposite sc = new ScrolledComposite(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
    sc.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
    Composite c = new Composite(sc, SWT.NONE);
    c.setLayout(new GridLayout(10, true));
    for (int i = 0; i < 300; i++) {
        Button b = new Button(c, SWT.PUSH);
        b.setText("Button " + i);
    }// w ww.j  a  v a  2  s .c  o m
    Button b2 = new Button(shell, SWT.PUSH);
    b2.setText("bottom");
    b2.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));

    sc.setContent(c);
    sc.setExpandHorizontal(true);
    sc.setExpandVertical(true);
    sc.setMinSize(c.computeSize(SWT.DEFAULT, SWT.DEFAULT));

    Listener listener = new Listener() {
        public void handleEvent(Event e) {
            Control child = (Control) e.widget;
            Rectangle bounds = child.getBounds();
            Rectangle area = sc.getClientArea();
            Point origin = sc.getOrigin();
            if (origin.x > bounds.x)
                origin.x = Math.max(0, bounds.x);
            if (origin.y > bounds.y)
                origin.y = Math.max(0, bounds.y);
            if (origin.x + area.width < bounds.x + bounds.width)
                origin.x = Math.max(0, bounds.x + bounds.width - area.width);
            if (origin.y + area.height < bounds.y + bounds.height)
                origin.y = Math.max(0, bounds.y + bounds.height - area.height);
            sc.setOrigin(origin);
        }
    };
    Control[] controls = c.getChildren();
    for (int i = 0; i < controls.length; i++) {
        controls[i].addListener(SWT.Activate, listener);
    }
    shell.setSize(300, 500);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

---

From source file:RadialLayout.java

private Point[] calculateControlPositions(Composite composite) {
    int controlCount = composite.getChildren().length;
    int stepsPerHemisphere = stepsPerHemisphere(controlCount);
    Point[] positions = new Point[controlCount];

    Point maxControlDimensions = calculateMaxDimensions(composite.getChildren());
    int maxControlWidth = maxControlDimensions.x;

    Rectangle clientArea = composite.getClientArea();
    int smallestDimension = Math.min(clientArea.width, clientArea.height);
    int radius = (smallestDimension / 2) - maxControlWidth;
    Point center = new Point(clientArea.width / 2, clientArea.height / 2);
    long radiusSquared = radius * radius;

    int stepXDistance = calculateStepDistance(radius * 2, stepsPerHemisphere);

    int signMultiplier = 1;
    int x = -radius;
    int y;//w  w w  .  j a  v  a  2 s .c  o m
    Control[] controls = composite.getChildren();
    for (int i = 0; i < controlCount; i++) {
        Point currSize = controls[i].getSize();
        long xSquared = x * x;

        int sqrRoot = (int) Math.sqrt(radiusSquared - xSquared);
        y = signMultiplier * sqrRoot;
        int translatedX = x + center.x;
        int translatedY = y + center.y;
        positions[i] = new Point(translatedX - (currSize.x / 2), translatedY - (currSize.y / 2));

        x = x + (signMultiplier * stepXDistance);
        //we've finished the upper hemisphere, now do the lower
        if (x >= radius) {
            x = radius - (x - radius);
            signMultiplier = -1;
        }
    }

    return positions;
}

---

From source file:RadialLayout.java

protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) {
    Point maxDimensions = calculateMaxDimensions(composite.getChildren());
    int stepsPerHemisphere = stepsPerHemisphere(composite.getChildren().length);

    int maxWidth = maxDimensions.x;
    int maxHeight = maxDimensions.y;

    int dimensionMultiplier = (stepsPerHemisphere + 1);
    int controlWidth = maxWidth * dimensionMultiplier;
    int controlHeight = maxHeight * dimensionMultiplier;
    int diameter = Math.max(controlWidth, controlHeight);
    Point preferredSize = new Point(diameter, diameter);

    if (wHint != SWT.DEFAULT) {
        if (preferredSize.x > wHint) {
            preferredSize.x = wHint;//from   w  w  w .  j a v a2  s .co m
        }
    }

    if (hHint != SWT.DEFAULT) {
        if (preferredSize.y > hHint) {
            preferredSize.y = hHint;
        }
    }

    return preferredSize;
}

---

From source file:RadialLayout.java

protected void layout(Composite composite, boolean flushCache) {
    Point[] positions = calculateControlPositions(composite);
    Control[] controls = composite.getChildren();
    for (int i = 0; i < controls.length; i++) {
        Point preferredSize = controls[i].computeSize(SWT.DEFAULT, SWT.DEFAULT);
        controls[i].setBounds(positions[i].x, positions[i].y, preferredSize.x, preferredSize.y);
    }/*from  w w w.j a  va  2s . com*/
}

---

From source file:BorderLayout.java

protected void layout(Composite composite, boolean flushCache) {
    if (flushCache || sizes == null)
        refreshSizes(composite.getChildren());

    Rectangle clientArea = composite.getClientArea();

    // Enough space for all.
    if (controls[NORTH] != null) {
        controls[NORTH].setBounds(clientArea.x, clientArea.y, clientArea.width, sizes[NORTH].y);
    }/*from   w  w  w .  java2 s  .c o  m*/
    if (controls[SOUTH] != null) {
        controls[SOUTH].setBounds(clientArea.x, clientArea.y + clientArea.height - sizes[SOUTH].y,
                clientArea.width, sizes[SOUTH].y);
    }
    if (controls[WEST] != null) {
        controls[WEST].setBounds(clientArea.x, clientArea.y + sizes[NORTH].y, sizes[WEST].x,
                clientArea.height - sizes[NORTH].y - sizes[SOUTH].y);
    }
    if (controls[EAST] != null) {
        controls[EAST].setBounds(clientArea.x + clientArea.width - sizes[EAST].x, clientArea.y + sizes[NORTH].y,
                sizes[EAST].x, clientArea.height - sizes[NORTH].y - sizes[SOUTH].y);
    }
    if (controls[CENTER] != null) {
        controls[CENTER].setBounds(clientArea.x + sizes[WEST].x, clientArea.y + sizes[NORTH].y,
                clientArea.width - sizes[WEST].x - sizes[EAST].x,
                clientArea.height - sizes[NORTH].y - sizes[SOUTH].y);
    }

}

---

From source file:BorderLayout.java

protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) {

    if (sizes == null || flushCache == true)
        refreshSizes(composite.getChildren());
    int w = wHint;
    int h = hHint;
    if (w == SWT.DEFAULT)
        w = width;/*w w w  . j  ava  2  s.c o m*/
    if (h == SWT.DEFAULT)
        h = height;

    return new Point(w, h);
}

---

• «
• 1
• 2
• »