Java Code Examples for java.awt.Component#getMinimumSize()

public Dimension minimumLayoutSize(Container parent) {
    synchronized (parent.getTreeLock()) {
        Dimension dim = new Dimension(0, 0);
        int componentCount = parent.getComponentCount();

        for (int i = 0; i < componentCount; i++) {
            Component c = parent.getComponent(i);
            if (c.isVisible()) {
                Dimension d = c.getMinimumSize();
                dim.height = Math.max(dim.height, d.height);
                if (i > 0) {
                    dim.width += hgap;
                }
                dim.width += d.width;
            }
        }
        Insets insets = parent.getInsets();
        dim.width += insets.left + insets.right + 2 * hgap;
        dim.height += insets.top + insets.bottom + 2 * vgap;
        return dim;
    }
}
 

public void test(final Component component) {
    final Dimension psize = component.getPreferredSize();
    psize.width += 200;
    if (Objects.equals(psize, component.getPreferredSize())) {
        throw new RuntimeException("PreferredSize is wrong");
    }
    final Dimension msize = component.getMaximumSize();
    msize.width += 200;
    if (Objects.equals(msize, component.getMaximumSize())) {
        throw new RuntimeException("MaximumSize is wrong");
    }
    final Dimension misize = component.getMinimumSize();
    misize.width += 200;
    if (Objects.equals(misize, component.getMinimumSize())) {
        throw new RuntimeException("MinimumSize is wrong");
    }
}
 

/**
    * Returns the minimum size needed to layout the target container.
    *
    * @param target the component to lay out.
    * @return the minimum layout dimension.
    */
   @Override
public Dimension minimumLayoutSize(Container target) {
       Dimension tarsiz = new Dimension(0, 0);

       for (int i = 0; i < target.getComponentCount(); i++) {
           Component m = target.getComponent(i);
           if (m.isVisible()) {
               Dimension d = m.getMinimumSize();
               tarsiz.width = Math.max(tarsiz.width, d.width);
               if (i > 0) {
                   tarsiz.height += vgap;
               }
               tarsiz.height += d.height;
           }
       }
       Insets insets = target.getInsets();
       tarsiz.width += insets.left + insets.right + hgap * 2;
       tarsiz.height += insets.top + insets.bottom + vgap * 2;
       return tarsiz;
   }
 

public void test(final Component component) {
    final Dimension psize = component.getPreferredSize();
    psize.width += 200;
    if (Objects.equals(psize, component.getPreferredSize())) {
        throw new RuntimeException("PreferredSize is wrong");
    }
    final Dimension msize = component.getMaximumSize();
    msize.width += 200;
    if (Objects.equals(msize, component.getMaximumSize())) {
        throw new RuntimeException("MaximumSize is wrong");
    }
    final Dimension misize = component.getMinimumSize();
    misize.width += 200;
    if (Objects.equals(misize, component.getMinimumSize())) {
        throw new RuntimeException("MinimumSize is wrong");
    }
}
 

private Dimension computeDimension(Container parent, int type) {
    Insets insets = parent.getInsets();
    int x = insets.left;
    int y = insets.top;
    int columnWidth = 0;
    // int limitHeight = parent.getHeight() - insets.bottom;
    int maxY = 0;

    for (Component c : this.components) {
        if (c.isVisible()) {
            Dimension d;

            switch (type) {
                case 0:
                    d = c.getPreferredSize();
                    break;
                case 1:
                    d = c.getMinimumSize();
                    break;
                default:
                    d = c.getMaximumSize();
                    break;
            }
            columnWidth = Math.max(columnWidth, d.width);
            /*
            if (limitHeight != 0 && y + d.height >= limitHeight) {
                x += columnWidth + this.hgap;
                y = insets.top;
                columnWidth = d.width;
            }
            */
            y += d.height;
            maxY = Math.max(y, maxY);
            y += this.vgap;
        }
    }
    x += columnWidth;
    return new Dimension(x, maxY);
}
 

public Dimension getSize(Container parent, boolean minimum) {
    int n = parent.getComponentCount();
    Insets insets = parent.getInsets();
    Dimension d = new Dimension();
    for (int i = 0; i < n; i++) {
        Component comp = parent.getComponent(i);
        if (comp instanceof EnableButton) {
            continue;
        }
        Dimension p = (minimum
                       ? comp.getMinimumSize()
                       : comp.getPreferredSize());
        if (horizontal) {
            d.width += p.width;
            if (d.height < p.height) {
                d.height = p.height;
            }
        } else {
            if (d.width < p.width) {
                d.width = p.width;
            }
            d.height += p.height;
        }
    }
    d.width += (insets.left + insets.right);
    d.height += (insets.top + insets.bottom);
    return d;
}
 

public Dimension minimumLayoutSize(Container parent) {
    int minw = 0;
    int minh = 0;
    for (Component c : parent.getComponents()) {
        Dimension min = c.getMinimumSize();
        minw += min.width;
        minh = Math.max(minh, min.height);
    }
    minw += HGAP * (parent.getComponentCount() - 1);
    return new Dimension(minw, minh);
}
 

private Dimension getLayoutSize(Container parent, boolean preferred) {
	int tabPlacement = ((JTabbedPane) parent).getTabPlacement();
	boolean verticalPlacement = tabPlacement == JTabbedPane.TOP
			|| tabPlacement == JTabbedPane.BOTTOM;
	Dimension additional = new Dimension(0, 0);
	Dimension max = new Dimension(0, 0);
	for (int a = 0; a < parent.getComponentCount(); a++) {
		Component c = parent.getComponent(a);
		Dimension d = preferred ? c.getPreferredSize() : c
				.getMinimumSize();
		if (c instanceof UIResourcePanel) {
			if (verticalPlacement) {
				additional.height += d.height;
				additional.width = Math.max(additional.width, d.width);
			} else {
				additional.width += d.width;
				additional.height = Math.max(additional.height,
						d.height);
			}
		} else {
			max.width = Math.max(max.width, d.width);
			max.height = Math.max(max.height, d.height);
		}
	}
	if (verticalPlacement) {
		return new Dimension(Math.max(additional.width, max.width),
				additional.height + max.height);
	}
	return new Dimension(additional.width + max.width, Math.max(
			additional.height, max.height));
}
 

public Dimension getSize(Container parent, boolean minimum) {
    int n = parent.getComponentCount();
    Insets insets = parent.getInsets();
    Dimension d = new Dimension();
    for (int i = 0; i < n; i++) {
        Component comp = parent.getComponent(i);
        if (comp instanceof EnableButton) {
            continue;
        }
        Dimension p = (minimum
                       ? comp.getMinimumSize()
                       : comp.getPreferredSize());
        if (horizontal) {
            d.width += p.width;
            if (d.height < p.height) {
                d.height = p.height;
            }
        } else {
            if (d.width < p.width) {
                d.width = p.width;
            }
            d.height += p.height;
        }
    }
    d.width += (insets.left + insets.right);
    d.height += (insets.top + insets.bottom);
    return d;
}
 

public Dimension getSize(Container parent, boolean minimum) {
    int n = parent.getComponentCount();
    Insets insets = parent.getInsets();
    Dimension d = new Dimension();
    for (int i = 0; i < n; i++) {
        Component comp = parent.getComponent(i);
        if (comp instanceof EnableButton) {
            continue;
        }
        Dimension p = (minimum
                       ? comp.getMinimumSize()
                       : comp.getPreferredSize());
        if (horizontal) {
            d.width += p.width;
            if (d.height < p.height) {
                d.height = p.height;
            }
        } else {
            if (d.width < p.width) {
                d.width = p.width;
            }
            d.height += p.height;
        }
    }
    d.width += (insets.left + insets.right);
    d.height += (insets.top + insets.bottom);
    return d;
}
 

@Override
public Dimension getPreferredSize() {
    Component[] childComponents = getComponents();
    if (childComponents.length == 0) {
        return minSize;
    } else {
        // TODO: should be computed just when child components are added/removed
        int minWidth = 0;
        for (Component component : childComponents) {
            int minChildComponentWidth = component.getMinimumSize().width;
            if (minWidth < minChildComponentWidth) minWidth = minChildComponentWidth;
        }
        return new Dimension(minWidth, imageSize.height);
    }
}
 

public float getMinWidth (Component widget) {
	return widget.getMinimumSize().width;
}
 

public float getMinHeight (Component widget) {
	return widget.getMinimumSize().height;
}
 

/**
 * Returns the minimum or preferred dimension needed to layout the target
 * container.
 *
 * @param target    target to get layout size for
 * @param preferred should preferred size be calculated
 * @return the dimension to layout the target container
 */
private Dimension layoutSize(final Container target, final boolean preferred) {
    synchronized (target.getTreeLock()) {
        // Each row must fit with the width allocated to the containter.
        // When the container width = 0, the preferred width of the
        // container
        // has not yet been calculated so lets ask for the maximum.

        int targetWidth = target.getSize().width;

        if (targetWidth == 0) {
            targetWidth = Integer.MAX_VALUE;
        }

        int hgap = getHgap();
        int vgap = getVgap();
        Insets insets = target.getInsets();
        int horizontalInsetsAndGap = insets.left + insets.right + (hgap * 2);
        int maxWidth = targetWidth - horizontalInsetsAndGap;

        // Fit components into the allowed width

        Dimension dim = new Dimension(0, 0);
        int rowWidth = 0;
        int rowHeight = 0;

        int nmembers = target.getComponentCount();

        for (int i = 0; i < nmembers; i++) {
            Component m = target.getComponent(i);

            if (m.isVisible()) {
                Dimension d = preferred ? m.getPreferredSize() : m.getMinimumSize();

                // Can't add the component to current row. Start a new row.

                if (rowWidth + d.width > maxWidth) {
                    addRow(dim, rowWidth, rowHeight);
                    rowWidth = 0;
                    rowHeight = 0;
                }

                // Add a horizontal gap for all components after the first

                if (rowWidth != 0) {
                    rowWidth += hgap;
                }

                rowWidth += d.width;
                rowHeight = Math.max(rowHeight, d.height);
            }
        }

        addRow(dim, rowWidth, rowHeight);

        dim.width += horizontalInsetsAndGap;
        dim.height += insets.top + insets.bottom + vgap * 2;

        // When using a scroll pane or the DecoratedLookAndFeel we need to
        // make sure the preferred size is less than the size of the
        // target containter so shrinking the container size works
        // correctly. Removing the horizontal gap is an easy way to do this.

        Container scrollPane = SwingUtilities.getAncestorOfClass(JScrollPane.class, target);

        if (scrollPane != null) {
            dim.width -= (hgap + 1);
        }

        return dim;
    }
}
 

/**
 * Returns the minimum or preferred dimension needed to layout the target
 * container.
 * 
 * @param target
 *            target to get layout size for
 * @param preferred
 *            should preferred size be calculated
 * @return the dimension to layout the target container
 */
private Dimension layoutSize(Container target, boolean preferred)
{
	synchronized (target.getTreeLock())
	{
		// Each row must fit with the width allocated to the containter.
		// When the container width = 0, the preferred width of the
		// container
		// has not yet been calculated so lets ask for the maximum.

		int targetWidth = target.getSize().width;

		if (targetWidth == 0)
			targetWidth = Integer.MAX_VALUE;

		final int hgap = getHgap();
		final int vgap = getVgap();
		final Insets insets = target.getInsets();
		final int horizontalInsetsAndGap = insets.left + insets.right + (hgap * 2);
		final int maxWidth = targetWidth - horizontalInsetsAndGap;

		// Fit components into the allowed width

		final Dimension dim = new Dimension(0, 0);
		int rowWidth = 0;
		int rowHeight = 0;

		final int nmembers = target.getComponentCount();

		for (int i = 0; i < nmembers; i++)
		{
			final Component m = target.getComponent(i);

			if (m.isVisible())
			{
				final Dimension d = preferred ? m.getPreferredSize() : m.getMinimumSize();

				// Can't add the component to current row. Start a new row.

				if (rowWidth + d.width > maxWidth)
				{
					addRow(dim, rowWidth, rowHeight);
					rowWidth = 0;
					rowHeight = 0;
				}

				// Add a horizontal gap for all components after the first

				if (rowWidth != 0)
				{
					rowWidth += hgap;
				}

				rowWidth += d.width;
				rowHeight = Math.max(rowHeight, d.height);
			}
		}

		addRow(dim, rowWidth, rowHeight);

		dim.width += horizontalInsetsAndGap;
		dim.height += insets.top + insets.bottom + vgap * 2;

		// When using a scroll pane or the DecoratedLookAndFeel we need to
		// make sure the preferred size is less than the size of the
		// target containter so shrinking the container size works
		// correctly. Removing the horizontal gap is an easy way to do this.

		final Container scrollPane = SwingUtilities.getAncestorOfClass(JScrollPane.class, target);

		if (scrollPane != null && target.isValid())
		{
			dim.width -= (hgap + 1);
		}

		return dim;
	}
}
 

/**
 * Returns the minimum or preferred dimension needed to layout the target
 * container.
 *
 * @param target target to get layout size for
 * @param preferred should preferred size be calculated
 * @return the dimension to layout the target container
 */
private Dimension layoutSize(final Container target, final boolean preferred) {
	synchronized (target.getTreeLock()) {
		//  Each row must fit with the width allocated to the containter.
		//  When the container width = 0, the preferred width of the container
		//  has not yet been calculated so lets ask for the maximum.

		int targetWidth = target.getSize().width;

		if (targetWidth == 0) {
			targetWidth = Integer.MAX_VALUE;
		}

		final int hgap = getHgap();
		final int vgap = getVgap();
		final Insets insets = target.getInsets();
		final int horizontalInsetsAndGap = insets.left + insets.right + (hgap * 2);
		final int maxWidth = targetWidth - horizontalInsetsAndGap;

		//  Fit components into the allowed width

		final Dimension dim = new Dimension(0, 0);
		int rowWidth = 0;
		int rowHeight = 0;

		final int nmembers = target.getComponentCount();

		for (int i = 0; i < nmembers; i++) {
			final Component m = target.getComponent(i);

			if (m.isVisible()) {
				final Dimension d = preferred ? m.getPreferredSize() : m.getMinimumSize();

				//  Can't add the component to current row. Start a new row.

				if (rowWidth + d.width > maxWidth) {
					addRow(dim, rowWidth, rowHeight);
					rowWidth = 0;
					rowHeight = 0;
				}

				//  Add a horizontal gap for all components after the first

				if (rowWidth != 0) {
					rowWidth += hgap;
				}

				rowWidth += d.width;
				rowHeight = Math.max(rowHeight, d.height);
			}
		}

		addRow(dim, rowWidth, rowHeight);

		dim.width += horizontalInsetsAndGap;
		dim.height += insets.top + insets.bottom + vgap * 2;

		//	When using a scroll pane or the DecoratedLookAndFeel we need to
		//  make sure the preferred size is less than the size of the
		//  target containter so shrinking the container size works
		//  correctly. Removing the horizontal gap is an easy way to do this.

		final Container scrollPane = SwingUtilities.getAncestorOfClass(JScrollPane.class, target);

		if (scrollPane != null && target.isValid()) {
			dim.width -= (hgap + 1);
		}

		return dim;
	}
}
 

public float getMinWidth (Component widget) {
	return widget.getMinimumSize().width;
}
 

public float getMinHeight (Component widget) {
	return widget.getMinimumSize().height;
}
 

/**
 * Returns the minimum size of a component. Subclasses are encouraged to
 * override this.
 * 
 * @param c
 *            the component to retrieve the minimum size.
 * @return the minimum size of the argument.
 */
protected Dimension getMinimumSize(Component c) {
	return c.getMinimumSize();
}
 

public Dimension minimumLayoutSize(Container parent) {
        synchronized (parent.getTreeLock()) {
            int width = 0;
            int height = 0;

            for (Component comp: components) {
                Dimension size = comp.getMinimumSize();
                width = Math.max(size.width, width);
                height = Math.max(size.height, height);
            }

            Insets insets = parent.getInsets();
            width += insets.left + insets.right;
            height += insets.top + insets.bottom;

            return new Dimension(width, height);
        }
    }