com.sun.jna.platform

Class WindowUtils.NativeWindowUtils

java.lang.Object

com.sun.jna.platform.WindowUtils.NativeWindowUtils

Enclosing class:

WindowUtils

public abstract static class WindowUtils.NativeWindowUtils
extends Object

Window utilities with differing native implementations.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	WindowUtils.NativeWindowUtils.TransparentContentPane

Constructor Summary

Constructors

Constructor and Description
NativeWindowUtils()

Method Summary

Modifier and Type	Method and Description
protected List<DesktopWindow>	getAllWindows(boolean onlyVisibleWindows) Requests a list of all currently available Desktop windows.
GraphicsConfiguration	getAlphaCompatibleGraphicsConfiguration() Return the default graphics configuration.
protected Dimension	getIconSize(WinDef.HICON hIcon) Detects the size of an icon.
protected String	getProcessFilePath(WinDef.HWND hwnd) Detects the full file path of the process associated with the specified window handle.
protected Window	getWindow(Component c)
protected BufferedImage	getWindowIcon(WinDef.HWND hwnd) Obtains the set icon for the window associated with the specified window handle.
protected Rectangle	getWindowLocationAndSize(WinDef.HWND hwnd) Requests the location and size of the window associated with the specified window handle.
protected String	getWindowTitle(WinDef.HWND hwnd) Tries to obtain the Window's title which belongs to the specified window handle.
boolean	isWindowAlphaSupported() Default: no support.
protected void	setDoubleBuffered(Component root, boolean buffered)
protected void	setForceHeavyweightPopups(Window w, boolean force) Use this method to ensure heavyweight popups are used in conjunction with a given window.
protected void	setLayersTransparent(Window w, boolean transparent)
protected void	setMask(Component c, Raster raster) Override this method to provide bitmap masking of the given heavyweight component.
void	setWindowAlpha(Window w, float alpha) Set the overall alpha transparency of the window.
void	setWindowMask(Component w, Icon mask) Set the window mask based on an Icon.
protected void	setWindowMask(Component w, Raster raster) Set the window mask based on the given Raster, which should be treated as a bitmap (zero/nonzero values only).
void	setWindowMask(Component w, Shape mask) Set the window mask based on a Shape.
void	setWindowTransparent(Window w, boolean transparent) Set the window to be transparent.
protected Raster	toRaster(Component c, Icon mask)
protected Raster	toRaster(Shape mask)
protected Shape	toShape(Raster raster)
protected void	whenDisplayable(Component w, Runnable action) Execute the given action when the given window becomes displayable.

Methods inherited from class java.lang.Object

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

Constructor Detail

NativeWindowUtils

public NativeWindowUtils()

Method Detail

getWindow

protected Window getWindow(Component c)

whenDisplayable

protected void whenDisplayable(Component w,
                               Runnable action)

Execute the given action when the given window becomes displayable.

toRaster

protected Raster toRaster(Shape mask)

toRaster

protected Raster toRaster(Component c,
                          Icon mask)

toShape

protected Shape toShape(Raster raster)

setWindowAlpha

public void setWindowAlpha(Window w,
                           float alpha)

Set the overall alpha transparency of the window. An alpha of 1.0 is fully opaque, 0.0 is fully transparent.

isWindowAlphaSupported

public boolean isWindowAlphaSupported()

Default: no support.

getAlphaCompatibleGraphicsConfiguration

public GraphicsConfiguration getAlphaCompatibleGraphicsConfiguration()

Return the default graphics configuration.

setWindowTransparent

public void setWindowTransparent(Window w,
                                 boolean transparent)

Set the window to be transparent. Only explicitly painted pixels will be non-transparent. All pixels will be composited with whatever is under the window using their alpha values.

setDoubleBuffered

protected void setDoubleBuffered(Component root,
                                 boolean buffered)

setLayersTransparent

protected void setLayersTransparent(Window w,
                                    boolean transparent)

setMask

protected void setMask(Component c,
                       Raster raster)

Override this method to provide bitmap masking of the given heavyweight component.

setWindowMask

protected void setWindowMask(Component w,
                             Raster raster)

Set the window mask based on the given Raster, which should be treated as a bitmap (zero/nonzero values only). A value of null means to remove the mask.

setWindowMask

public void setWindowMask(Component w,
                          Shape mask)

Set the window mask based on a Shape.

setWindowMask

public void setWindowMask(Component w,
                          Icon mask)

Set the window mask based on an Icon. All non-transparent pixels will be included in the mask.

setForceHeavyweightPopups

protected void setForceHeavyweightPopups(Window w,
                                         boolean force)

Use this method to ensure heavyweight popups are used in conjunction with a given window. This prevents the window's alpha setting or mask region from being applied to the popup.

getWindowIcon

protected BufferedImage getWindowIcon(WinDef.HWND hwnd)

Obtains the set icon for the window associated with the specified window handle.

Parameters:

hwnd - The concerning window handle.

Returns:

Either the window's icon or null if an error occurred.

Throws:

UnsupportedOperationException - Thrown if this method wasn't yet implemented for the current platform.

getIconSize

protected Dimension getIconSize(WinDef.HICON hIcon)

Detects the size of an icon.

Parameters:

hIcon - The icon handle type.

Returns:

Either the requested icon's dimension or an Dimension instance of (0, 0).

Throws:

UnsupportedOperationException - Thrown if this method wasn't yet implemented for the current platform.

getAllWindows

protected List<DesktopWindow> getAllWindows(boolean onlyVisibleWindows)

Requests a list of all currently available Desktop windows.

Parameters:

onlyVisibleWindows - Specifies whether only currently visible windows will be considered (true). That are windows which are not minimized. The WS_VISIBLE flag will be checked (see: User32.IsWindowVisible(HWND)).

Returns:

A list with all windows and some detailed information.

Throws:

UnsupportedOperationException - Thrown if this method wasn't yet implemented for the current platform.

getWindowTitle

protected String getWindowTitle(WinDef.HWND hwnd)

Tries to obtain the Window's title which belongs to the specified window handle.

Parameters:

hwnd - The concerning window handle.

Returns:

Either the title or an empty string of no title was found or an error occurred.

Throws:

UnsupportedOperationException - Thrown if this method wasn't yet implemented for the

getProcessFilePath

protected String getProcessFilePath(WinDef.HWND hwnd)

Detects the full file path of the process associated with the specified window handle.

Parameters:

hwnd - The concerning window handle for which the PE file path is required.

Returns:

The full file path of the PE file that is associated with the specified window handle.

Throws:

UnsupportedOperationException - Thrown if this method wasn't yet implemented for the

getWindowLocationAndSize

protected Rectangle getWindowLocationAndSize(WinDef.HWND hwnd)

Requests the location and size of the window associated with the specified window handle.

Parameters:

hwnd - The concerning window handle.

Returns:

The location and size of the window.

Throws:

UnsupportedOperationException - Thrown if this method wasn't yet implemented for the