oracle.jbo.common
Class GraphicsUtils

java.lang.Object
  oracle.jbo.common.GraphicsUtils

public final class GraphicsUtils

extends java.lang.Object

GraphicsUtils defines common user-interface related utility functions.

Field Summary

protected static java.awt.Component	component
protected static java.awt.MediaTracker	tracker

Method Summary

static void	centerWindowOnComponent(java.awt.Window window, java.awt.Component over) Centers the window over a component (usually another window).
static void	centerWindowOnScreen(java.awt.Window window) Sets the location of the specified window so that it is centered on screen.
static javax.swing.ImageIcon	createImageIcon(java.awt.Image image)
static void	drawHighlightBorder(java.awt.Graphics g, int x, int y, int width, int height, boolean raised, java.awt.Color shadow, java.awt.Color highlight) Draws a single-line highlight border rectangle.
static java.awt.Component	focusComponentOrChild(java.awt.Component c)
static java.awt.Insets	getHighlightBorderInsets() Return the amount of space taken up by a highlight border drawn by drawHighlightBorder().
static java.awt.Point	getPopupMenuShowPoint(javax.swing.JPopupMenu popup, int x, int y) Returns a point where the given popup menu should be shown.
static java.awt.Point	getPopupMenuShowPoint(javax.swing.JPopupMenu popup, java.awt.event.MouseEvent event) Returns a point where the given popup menu should be shown.
static boolean	isAncestorOfFocusedComponent(java.awt.Component c)
static java.awt.Image	loadFromResource(java.lang.String imageName, java.lang.Class cls) Loads an Image named imageName as a resource relative to the Class cls.

Methods inherited from class java.lang.Object

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

Field Detail

component

protected static final java.awt.Component component

tracker

protected static final java.awt.MediaTracker tracker

Method Detail

centerWindowOnScreen

public static void centerWindowOnScreen(java.awt.Window window)

Sets the location of the specified window so that it is centered on screen.

Parameters:

window - The window to be centered.

drawHighlightBorder

public static void drawHighlightBorder(java.awt.Graphics g,
                                       int x,
                                       int y,
                                       int width,
                                       int height,
                                       boolean raised,
                                       java.awt.Color shadow,
                                       java.awt.Color highlight)

Draws a single-line highlight border rectangle.

Parameters:

g - The graphics context to use for drawing.

x - The left edge of the border.

y - The top edge of the border.

width - The width of the border.

height - The height of the border.

raised - true if the border is to be drawn raised, false if lowered.

shadow - The shadow color for the border.

highlight - The highlight color for the border.

See Also:

EtchedBorder, BasicGraphicsUtils#drawEtchedRect

getHighlightBorderInsets

public static java.awt.Insets getHighlightBorderInsets()

Return the amount of space taken up by a highlight border drawn by drawHighlightBorder().

Returns:

The Insets needed for the highlight border.

See Also:

drawHighlightBorder(java.awt.Graphics, int, int, int, int, boolean, java.awt.Color, java.awt.Color)

createImageIcon

public static javax.swing.ImageIcon createImageIcon(java.awt.Image image)

getPopupMenuShowPoint

public static java.awt.Point getPopupMenuShowPoint(javax.swing.JPopupMenu popup,
                                                   java.awt.event.MouseEvent event)

Returns a point where the given popup menu should be shown. The point is calculated by adjusting the X and Y coordinates from the given mouse event so that the popup menu will not be clipped by the screen boundaries.

Parameters:

popup - the popup menu

event - the mouse event

Returns:

the point where the popup menu should be shown

getPopupMenuShowPoint

public static java.awt.Point getPopupMenuShowPoint(javax.swing.JPopupMenu popup,
                                                   int x,
                                                   int y)

Returns a point where the given popup menu should be shown. The point is calculated by adjusting the X and Y coordinates so that the popup menu will not be clipped by the screen boundaries.

Parameters:

popup - the popup menu

x - the x position in screen coordinate

y - the y position in screen coordinates

Returns:

the point where the popup menu should be shown in screen coordinates

centerWindowOnComponent

public static void centerWindowOnComponent(java.awt.Window window,
                                           java.awt.Component over)

Centers the window over a component (usually another window). The window must already have been sized.

isAncestorOfFocusedComponent

public static boolean isAncestorOfFocusedComponent(java.awt.Component c)

Returns:

returns true if the component of one of its child has the focus

focusComponentOrChild

public static java.awt.Component focusComponentOrChild(java.awt.Component c)

loadFromResource

public static java.awt.Image loadFromResource(java.lang.String imageName,
                                              java.lang.Class cls)

Loads an Image named imageName as a resource relative to the Class cls. If the Image can not be loaded, then null is returned. Images loaded here will be added to an internal cache based upon the full URL to their location. This method replaces legacy code from JDeveloper 3.x and earlier.

See Also:

Class.getResource(String), Toolkit.createImage(URL)