Example usage for java.awt Container getComponentCount

Introduction

In this page you can find the example usage for java.awt Container getComponentCount.

Prototype

public int getComponentCount() 

Source Link

Document

Gets the number of components in this panel.

Usage

From source file:CircleLayoutTest.java

public void setSizes(Container parent) {
    if (sizesSet)
        return;//  w  ww .  j  a va  2  s .co m
    int comCount = parent.getComponentCount();

    for (int i = 0; i < comCount; i++) {
        Component c = parent.getComponent(i);
        if (c.isVisible()) {
            Dimension size = c.getPreferredSize();
            maxComponentWidth = Math.max(maxComponentWidth, size.width);
            maxComponentHeight = Math.max(maxComponentWidth, size.height);
            preferredHeight += size.height;
        }
    }
    preferredHeight += maxComponentHeight;
    preferredWidth = 2 * maxComponentWidth;
    minHeight = preferredHeight;
    minWidth = preferredWidth;
    sizesSet = true;
}

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From source file:CenterLayout.java

public void layoutContainer(Container container) {
    int count = container.getComponentCount();
    if (count > 0) {
        Component child = container.getComponent(0);
        java.awt.Insets insets = container.getInsets();
        int availWidth = container.getWidth() - insets.left - insets.right;
        int availHeight = container.getHeight() - insets.top - insets.bottom;
        Dimension preferredSize = child.getPreferredSize();
        double preferredWidth = preferredSize.getWidth();
        double preferredHeight = preferredSize.getHeight();
        int width;
        int height;
        int x;/*  www.j av a 2s .c o m*/
        int y;
        if (preferredWidth < availWidth) {
            x = (int) Math.round(insets.left + (availWidth - preferredWidth) / 2);
            width = (int) Math.round(preferredWidth);
        } else {
            x = insets.left;
            width = availWidth;
        }
        if (preferredHeight < availHeight) {
            y = (int) Math.round(insets.top + (availHeight - preferredHeight) / 2);
            height = (int) Math.round(preferredHeight);
        } else {
            y = insets.top;
            height = availHeight;
        }
        child.setBounds(x, y, width, height);
    }
}

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From source file:WrapperLayout.java

public Dimension preferredLayoutSize(Container arg0) {
    java.awt.Insets insets = arg0.getInsets();
    int count = arg0.getComponentCount();
    if (count > 0) {
        Dimension d = arg0.getComponent(0).getPreferredSize();
        return new Dimension(d.width + insets.left + insets.right, d.height + insets.top + insets.bottom);
    } else {/*from  w ww . ja v  a2s  .  c  om*/
        return new Dimension(insets.left + insets.right, insets.top + insets.bottom);
    }
}

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From source file:WrapperLayout.java

public Dimension minimumLayoutSize(Container arg0) {
    java.awt.Insets insets = arg0.getInsets();
    int count = arg0.getComponentCount();
    if (count > 0) {
        Dimension d = arg0.getComponent(0).getMinimumSize();
        return new Dimension(d.width + insets.left + insets.right, d.height + insets.top + insets.bottom);
    } else {/*from w  w  w . j  a  va2  s. co m*/
        return new Dimension(insets.left + insets.right, insets.top + insets.bottom);
    }
}

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From source file:SquareLayout.java

/**
 * Returns the sole child of the specified container, or <code>null</code> if
 * none. Throws an <code>IllegalStateException</code> if there is more than
 * one child./*  w ww . j  av a2s  .  com*/
 */

private Component getChild(Container c) {
    int childCount = c.getComponentCount();
    if (childCount > 1)
        throw new IllegalStateException("May not layout more than one component");
    else if (childCount == 0)
        return null;
    else
        return c.getComponent(childCount - 1);
}

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From source file:net.sf.nmedit.jtheme.component.misc.CallDescriptor.java

private JTComponent getTarget() {
    if (target == null) {
        Container c = owner.getParent();
        if (c != null) {
            for (int i = c.getComponentCount() - 1; i >= 0; i--) {
                Component t = c.getComponent(i);
                if (t instanceof JTComponent && component.equals(t.getName())) {
                    target = (JTComponent) t;
                    break;
                }//w ww.  ja  va2s .c o m
            }
        }
    }
    return target;
}

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From source file:CircleLayoutTest.java

public void setSizes(Container parent) {
    if (sizesSet)
        return;/*from w  w  w  .j av  a  2  s .c  o  m*/
    int n = parent.getComponentCount();

    preferredWidth = 0;
    preferredHeight = 0;
    minWidth = 0;
    minHeight = 0;
    maxComponentWidth = 0;
    maxComponentHeight = 0;

    // compute the maximum component widths and heights
    // and set the preferred size to the sum of the component sizes.
    for (int i = 0; i < n; i++) {
        Component c = parent.getComponent(i);
        if (c.isVisible()) {
            Dimension d = c.getPreferredSize();
            maxComponentWidth = Math.max(maxComponentWidth, d.width);
            maxComponentHeight = Math.max(maxComponentHeight, d.height);
            preferredWidth += d.width;
            preferredHeight += d.height;
        }
    }
    minWidth = preferredWidth / 2;
    minHeight = preferredHeight / 2;
    sizesSet = true;
}

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From source file:CircleLayoutDemo.java

/**
 * Arranges the parent's Component objects in either an Ellipse or a Circle.
 * Ellipse is not yet implemented./*from   w  w  w .  ja v a  2  s. c om*/
 */
public void layoutContainer(Container parent) {
    int x, y, w, h, s, c;
    int n = parent.getComponentCount();
    double parentWidth = parent.getSize().width;
    double parentHeight = parent.getSize().height;
    Insets insets = parent.getInsets();
    int centerX = (int) (parentWidth - (insets.left + insets.right)) / 2;
    int centerY = (int) (parentHeight - (insets.top + insets.bottom)) / 2;

    Component comp = null;
    Dimension compPS = null;
    if (n == 1) {
        comp = parent.getComponent(0);
        x = centerX;
        y = centerY;
        compPS = comp.getPreferredSize();
        w = compPS.width;
        h = compPS.height;
        comp.setBounds(x, y, w, h);
    } else {
        double r = (Math.min(parentWidth - (insets.left + insets.right),
                parentHeight - (insets.top + insets.bottom))) / 2;
        r *= 0.75; // Multiply by .75 to account for extreme right and bottom
                   // Components
        for (int i = 0; i < n; i++) {
            comp = parent.getComponent(i);
            compPS = comp.getPreferredSize();
            if (isCircle) {
                c = (int) (r * Math.cos(2 * i * Math.PI / n));
                s = (int) (r * Math.sin(2 * i * Math.PI / n));
            } else {
                c = (int) ((centerX * 0.75) * Math.cos(2 * i * Math.PI / n));
                s = (int) ((centerY * 0.75) * Math.sin(2 * i * Math.PI / n));
            }
            x = c + centerX;
            y = s + centerY;

            w = compPS.width;
            h = compPS.height;

            comp.setBounds(x, y, w, h);
        }
    }

}

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From source file:ColumnLayout.java

protected Dimension layoutSize(Container parent, int sizetype) {
    int nkids = parent.getComponentCount();
    Dimension size = new Dimension(0, 0);
    Insets insets = parent.getInsets();
    int num_visible_kids = 0;

    // Compute maximum width and total height of all visible kids
    for (int i = 0; i < nkids; i++) {
        Component kid = parent.getComponent(i);
        Dimension d;/*from w  w  w. j  a  va 2 s  .c  o m*/
        if (!kid.isVisible())
            continue;
        num_visible_kids++;
        if (sizetype == 1)
            d = kid.getPreferredSize();
        else if (sizetype == 2)
            d = kid.getMinimumSize();
        else
            d = kid.getMaximumSize();
        if (d.width > size.width)
            size.width = d.width;
        size.height += d.height;
    }

    // Now add in margins and stuff
    size.width += insets.left + insets.right + 2 * margin_width;
    size.height += insets.top + insets.bottom + 2 * margin_height;
    if (num_visible_kids > 1)
        size.height += (num_visible_kids - 1) * spacing;
    return size;
}

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From source file:Main.java

private void setSizes(Container parent) {
    int nComps = parent.getComponentCount();
    Dimension d = null;/* w w  w.j av a 2  s  .  c  om*/

    //Reset preferred/minimum width and height.
    preferredWidth = 0;
    preferredHeight = 0;
    minWidth = 0;
    minHeight = 0;

    for (int i = 0; i < nComps; i++) {
        Component c = parent.getComponent(i);
        if (c.isVisible()) {
            d = c.getPreferredSize();

            if (i > 0) {
                preferredWidth += d.width / 2;
                preferredHeight += vgap;
            } else {
                preferredWidth = d.width;
            }
            preferredHeight += d.height;

            minWidth = Math.max(c.getMinimumSize().width, minWidth);
            minHeight = preferredHeight;
        }
    }
}

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