com.jidesoft.swing

Class Resizable

java.lang.Object

com.jidesoft.swing.Resizable

public class Resizable
extends java.lang.Object

Resizable is a class that supports the resizable feature.

To use it and make a component resizable, you just need to create new Resizable(component) and pass in that component to the constructor. Resizable uses beginResizing(int), resizing(int, int, int, int, int) and endResizing(int) to archive the resizing effect. It should work for most cases. However if it doesn't work as expected for some layouts, you can override one of all of the three methods to make it working.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Resizable.ResizeCorner

Field Summary

Fields

Modifier and Type	Field and Description
protected javax.swing.JComponent	_component
static int	ALL
static int	LEFT
static int	LOWER
static int	LOWER_LEFT
static int	LOWER_RIGHT
static int	NONE
static java.lang.String	PROPERTY_RESIZABLE_CORNERS
static java.lang.String	PROPERTY_RESIZE_CORNER_SIZE
static int	RIGHT
static int	UPPER
static int	UPPER_LEFT
static int	UPPER_RIGHT

Constructor Summary

Constructors

Constructor and Description
Resizable(javax.swing.JComponent component) Creates a new Resizable.

Method Summary

Modifier and Type	Method and Description
void	beginResizing(int resizeCorner) This method is called when resizing operation started.
protected javax.swing.event.MouseInputListener	createMouseInputListener() Creates the MouseInputListener for resizing.
void	endResizing(int resizeCorner) The method is called when resizing ends.
javax.swing.JComponent	getComponent() Gets the component which has this Resizable object.
javax.swing.event.MouseInputListener	getMouseInputAdapter() Gets the mouse adapter for resizing.
int	getResizableCorners() Gets the resizable corners.
int	getResizeCornerSize() Gets resize corner size.
java.awt.Insets	getResizeInsets() Returns the insets that should be used to calculate the resize area.
int	getSnapGridSize() Gets the snap grid size.
protected void	installListeners() Installs the listeners needed to perform resizing operations.
boolean	isTopLevel() Checks if the Resizable is added to a top level component.
void	resizing(int resizeCorner, int newX, int newY, int newW, int newH) This method is called during the resizing of ResizablePanel.
void	setResizableCorners(int resizableCorners) Sets resizable corners.
void	setResizeCornerSize(int resizeCornerSize) Sets the resize corner size.
void	setResizeInsets(java.awt.Insets resizeInsets) Sets the insets the be used to calculate the resize area.
void	setSnapGridSize(int snapGridSize) Sets the snap grid size.
void	setTopLevel(boolean topLevel) To indicates this Resizable is installed on a top level component such as JWindow, JDialog and JFrame v.s.
void	uninstallListeners() Uninstalls the listeners that created to perform resizing operations.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NONE

public static final int NONE

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Constant Field Values

UPPER_LEFT

public static final int UPPER_LEFT

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Constant Field Values

UPPER

public static final int UPPER

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Constant Field Values

UPPER_RIGHT

public static final int UPPER_RIGHT

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Constant Field Values

RIGHT

public static final int RIGHT

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Constant Field Values

LOWER_RIGHT

public static final int LOWER_RIGHT

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Constant Field Values

LOWER

public static final int LOWER

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Constant Field Values

LOWER_LEFT

public static final int LOWER_LEFT

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Constant Field Values

LEFT

public static final int LEFT

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Constant Field Values

ALL

public static final int ALL

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Constant Field Values

PROPERTY_RESIZABLE_CORNERS

public static final java.lang.String PROPERTY_RESIZABLE_CORNERS

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Constant Field Values

PROPERTY_RESIZE_CORNER_SIZE

public static final java.lang.String PROPERTY_RESIZE_CORNER_SIZE

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Constant Field Values

_component

protected final javax.swing.JComponent _component

Constructor Detail

Resizable

public Resizable(javax.swing.JComponent component)

Creates a new Resizable. This call will make the component to be resizable.

Parameters:

component - the component that should be resizable.

Method Detail

getResizableCorners

public int getResizableCorners()

Gets the resizable corners. The value is a bitwise OR of eight constants defined in Resizable.

Returns:

resizable corners.

setResizableCorners

public void setResizableCorners(int resizableCorners)

Sets resizable corners.

Parameters:

resizableCorners - new resizable corners. The value is a bitwise OR of eight constants defined in Resizable.

getResizeCornerSize

public int getResizeCornerSize()

Gets resize corner size. This size is the corner's sensitive area which will trigger the resizing from both sides.

Returns:

the resize corner size.

setResizeCornerSize

public void setResizeCornerSize(int resizeCornerSize)

Sets the resize corner size.

Parameters:

resizeCornerSize - the resize corner size.

installListeners

protected void installListeners()

Installs the listeners needed to perform resizing operations. You do not need to call this method directly. Constructor will call this method automatically.

uninstallListeners

public void uninstallListeners()

Uninstalls the listeners that created to perform resizing operations. After the uninstallation, the component will not be resizable anymore.

createMouseInputListener

protected javax.swing.event.MouseInputListener createMouseInputListener()

Creates the MouseInputListener for resizing. Subclass can override this method to provide its own MouseInputListener to customize existing one.

Returns:

the MouseInputListener for resizing.

getMouseInputAdapter

public javax.swing.event.MouseInputListener getMouseInputAdapter()

Gets the mouse adapter for resizing.

Returns:

the mouse adapter for resizing.

beginResizing

public void beginResizing(int resizeCorner)

This method is called when resizing operation started.

Parameters:

resizeCorner - the resize corner.

resizing

public void resizing(int resizeCorner,
                     int newX,
                     int newY,
                     int newW,
                     int newH)

This method is called during the resizing of ResizablePanel. In default implementation, it call

 setPreferredSize(new Dimension(newW, newH));
 getParent().doLayout();
 

in fact, depending on where you added this ResizablePanel, you may need to override this method to do something else. For example, ResizableWindow uses ResizablePanel to implement resizable feature in JWindow. It overrides this method to call setBounds on JWindow itself.

Parameters:

resizeCorner - the resize corner.

newX - the new x position.

newY - the new y position.

newW - the new width.

newH - the new height.

endResizing

public void endResizing(int resizeCorner)

The method is called when resizing ends.

Parameters:

resizeCorner - the resize corner.

isTopLevel

public boolean isTopLevel()

Checks if the Resizable is added to a top level component.

If it's top level component, it will use screen coordinates to do all calculations during resizing. If resizing the resizable panel won't affect any top level container's position, you can return false here. Otherwise, return true. The default implementation always return false. Subclasses can override to return different value. In the case of ResizableWindow or ResizableDialog, this method is overridden and returns true.

Returns:

false.

setTopLevel

public void setTopLevel(boolean topLevel)

To indicates this Resizable is installed on a top level component such as JWindow, JDialog and JFrame v.s. a JPanel which is not a top level component because a JPanel must be added to another top level component in order to be displayed.

Parameters:

topLevel - true or false.

getComponent

public javax.swing.JComponent getComponent()

Gets the component which has this Resizable object.

Returns:

the component which has this Resizable object.

getResizeInsets

public java.awt.Insets getResizeInsets()

Returns the insets that should be used to calculate the resize area. Unless you have used setResizeInsets or overridden this method, it'll return the insets of the component.

Returns:

the insets that should be used to calculate the resize area.

setResizeInsets

public void setResizeInsets(java.awt.Insets resizeInsets)

Sets the insets the be used to calculate the resize area.

Parameters:

resizeInsets -

getSnapGridSize

public int getSnapGridSize()

Gets the snap grid size.

Returns:

the snap grid size.

See Also:

setSnapGridSize(int)

setSnapGridSize

public void setSnapGridSize(int snapGridSize)

Sets the snap grid size.

Snap grid size is used to make resizing easier.

By default, the size is 1 pixel.

Parameters:

snapGridSize - the grid size