org.jivesoftware.openfire.launcher.GraphicUtils Maven / Gradle / Ivy
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/*
* Copyright (C) 2004-2008 Jive Software. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.openfire.launcher;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.net.URL;
import java.util.Hashtable;
import javax.swing.*;
/**
* GraphicsUtils class defines common user-interface related utility
* functions.
*/
public final class GraphicUtils {
private static final Insets HIGHLIGHT_INSETS = new Insets(1, 1, 1, 1);
public static final Color SELECTION_COLOR = new java.awt.Color(166, 202, 240);
public static final Color TOOLTIP_COLOR = new java.awt.Color(166, 202, 240);
protected final static Component component = new Component() {
};
protected final static MediaTracker tracker = new MediaTracker(component);
private static Hashtable imageCache = new Hashtable<>();
private GraphicUtils() {
}
/**
* Sets the location of the specified window so that it is centered on screen.
*
* @param window The window to be centered.
*/
public static void centerWindowOnScreen(Window window) {
final Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
final Dimension size = window.getSize();
if (size.height > screenSize.height) {
size.height = screenSize.height;
}
if (size.width > screenSize.width) {
size.width = screenSize.width;
}
window.setLocation((screenSize.width - size.width) / 2,
(screenSize.height - size.height) / 2);
}
/**
* Draws a single-line highlight border rectangle.
*
* @param g The graphics context to use for drawing.
* @param x The left edge of the border.
* @param y The top edge of the border.
* @param width The width of the border.
* @param height The height of the border.
* @param raised true if the border is to be drawn raised,
* false if lowered.
* @param shadow The shadow color for the border.
* @param highlight The highlight color for the border.
* @see javax.swing.border.EtchedBorder
* @see javax.swing.plaf.basic.BasicGraphicsUtils#drawEtchedRect
*/
public static void drawHighlightBorder(Graphics g, int x, int y,
int width, int height, boolean raised,
Color shadow, Color highlight) {
final Color oldColor = g.getColor();
g.translate(x, y);
g.setColor(raised ? highlight : shadow);
g.drawLine(0, 0, width - 2, 0);
g.drawLine(0, 1, 0, height - 2);
g.setColor(raised ? shadow : highlight);
g.drawLine(width - 1, 0, width - 1, height - 1);
g.drawLine(0, height - 1, width - 2, height - 1);
g.translate(-x, -y);
g.setColor(oldColor);
}
/**
* Return the amount of space taken up by a highlight border drawn by
* drawHighlightBorder().
*
* @return The Insets needed for the highlight border.
* @see #drawHighlightBorder
*/
public static Insets getHighlightBorderInsets() {
return HIGHLIGHT_INSETS;
}
public static ImageIcon createImageIcon(Image image) {
if (image == null) {
return null;
}
synchronized (tracker) {
tracker.addImage(image, 0);
try {
tracker.waitForID(0, 0);
} catch (InterruptedException e) {
System.out.println("INTERRUPTED while loading Image");
}
tracker.removeImage(image, 0);
}
return new ImageIcon(image);
}
/**
* 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.
*
* @param popup the popup menu
* @param event the mouse event
* @return the point where the popup menu should be shown
*/
public static Point getPopupMenuShowPoint(JPopupMenu popup, MouseEvent event) {
Component source = (Component) event.getSource();
Point topLeftSource = source.getLocationOnScreen();
Point ptRet = getPopupMenuShowPoint(popup,
topLeftSource.x + event.getX(),
topLeftSource.y + event.getY());
ptRet.translate(-topLeftSource.x, -topLeftSource.y);
return ptRet;
}
/**
* 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.
*
* @param popup the popup menu
* @param x the x position in screen coordinate
* @param y the y position in screen coordinates
* @return the point where the popup menu should be shown in screen
* coordinates
*/
public static Point getPopupMenuShowPoint(JPopupMenu popup, int x, int y) {
Dimension sizeMenu = popup.getPreferredSize();
Point bottomRightMenu = new Point(x + sizeMenu.width, y + sizeMenu.height);
Rectangle[] screensBounds = getScreenBounds();
int n = screensBounds.length;
for (int i = 0; i < n; i++) {
Rectangle screenBounds = screensBounds[i];
if (screenBounds.x <= x && x <= (screenBounds.x + screenBounds.width)) {
Dimension sizeScreen = screenBounds.getSize();
sizeScreen.height -= 32; // Hack to help prevent menu being clipped by Windows/Linux Taskbar.
int xOffset = 0;
if (bottomRightMenu.x > (screenBounds.x + sizeScreen.width))
xOffset = -sizeMenu.width;
int yOffset = 0;
if (bottomRightMenu.y > (screenBounds.y + sizeScreen.height))
yOffset = sizeScreen.height - bottomRightMenu.y;
return new Point(x + xOffset, y + yOffset);
}
}
return new Point(x, y); // ? that would mean that the top left point was not on any screen.
}
/**
* Centers the window over a component (usually another window).
* The window must already have been sized.
*/
public static void centerWindowOnComponent(Window window, Component over) {
if ((over == null) || !over.isShowing()) {
centerWindowOnScreen(window);
return;
}
Point parentLocation = over.getLocationOnScreen();
Dimension parentSize = over.getSize();
Dimension size = window.getSize();
// Center it.
int x = parentLocation.x + (parentSize.width - size.width) / 2;
int y = parentLocation.y + (parentSize.height - size.height) / 2;
// Now, make sure it's onscreen
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
// This doesn't actually work on the Mac, where the screen
// doesn't necessarily start at 0,0
if (x + size.width > screenSize.width)
x = screenSize.width - size.width;
if (x < 0)
x = 0;
if (y + size.height > screenSize.height)
y = screenSize.height - size.height;
if (y < 0)
y = 0;
window.setLocation(x, y);
}
/**
* @return returns true if the component of one of its child has the focus
*/
public static boolean isAncestorOfFocusedComponent(Component c) {
if (c.hasFocus()) {
return true;
} else {
if (c instanceof Container) {
Container cont = (Container) c;
int n = cont.getComponentCount();
for (int i = 0; i < n; i++) {
Component child = cont.getComponent(i);
if (isAncestorOfFocusedComponent(child))
return true;
}
}
}
return false;
}
/**
* Returns the first component in the tree of c that can accept
* the focus.
*
* @param c the root of the component hierarchy to search
* @param deepest if deepest is true the method will return the first and deepest component that can accept the
* focus. For example, if both a child and its parent are focusable and deepest is true, the child is
* returned.
* @see #focusComponentOrChild
*/
public static Component getFocusableComponentOrChild(Component c, boolean deepest) {
if (c != null && c.isEnabled() && c.isVisible()) {
if (c instanceof Container) {
Container cont = (Container) c;
if (deepest == false) { // first one is a good one
if (c instanceof JComponent) {
JComponent jc = (JComponent) c;
if (jc.isRequestFocusEnabled()) {
return jc;
}
}
}
int n = cont.getComponentCount();
for (int i = 0; i < n; i++) {
Component child = cont.getComponent(i);
Component focused = getFocusableComponentOrChild(child, deepest);
if (focused != null) {
return focused;
}
}
if (c instanceof JComponent) {
if (deepest == true) {
JComponent jc = (JComponent) c;
if (jc.isRequestFocusEnabled()) {
return jc;
}
}
} else {
return c;
}
}
}
return null;
}
/**
* Puts the focus on the first component in the tree of c that
* can accept the focus.
*
* @see #getFocusableComponentOrChild
*/
public static Component focusComponentOrChild(Component c) {
return focusComponentOrChild(c, false);
}
/**
* Puts the focus on the first component in the tree of c that
* can accept the focus.
*
* @param c the root of the component hierarchy to search
* @param deepest if deepest is true the method will focus the first and deepest component that can
* accept the focus.
* For example, if both a child and its parent are focusable and deepest is true, the child is focused.
* @see #getFocusableComponentOrChild
*/
public static Component focusComponentOrChild(Component c, boolean deepest) {
final Component focusable = getFocusableComponentOrChild(c, deepest);
if (focusable != null) {
focusable.requestFocus();
}
return focusable;
}
/**
* Loads an {@link 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 {@link URL} to
* their location.
*
* This method replaces legacy code from JDeveloper 3.x and earlier.
*
* @see Class#getResource(String)
* @see Toolkit#createImage(URL)
*/
public static Image loadFromResource(String imageName, Class cls) {
try {
final URL url = cls.getResource(imageName);
if (url == null) {
return null;
}
Image image = imageCache.get(url.toString());
if (image == null) {
image = Toolkit.getDefaultToolkit().createImage(url);
imageCache.put(url.toString(), image);
}
return image;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static Rectangle[] getScreenBounds() {
GraphicsEnvironment graphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
final GraphicsDevice[] screenDevices = graphicsEnvironment.getScreenDevices();
Rectangle[] screenBounds = new Rectangle[screenDevices.length];
for (int i = 0; i < screenDevices.length; i++) {
GraphicsDevice screenDevice = screenDevices[i];
final GraphicsConfiguration defaultConfiguration = screenDevice.getDefaultConfiguration();
screenBounds[i] = defaultConfiguration.getBounds();
}
return screenBounds;
}
public static final void makeSameSize(JComponent[] comps) {
if (comps.length == 0) {
return;
}
int max = 0;
for (int i = 0; i < comps.length; i++) {
int w = comps[i].getPreferredSize().width;
max = w > max ? w : max;
}
Dimension dim = new Dimension(max, comps[0].getPreferredSize().height);
for (int i = 0; i < comps.length; i++) {
comps[i].setPreferredSize(dim);
}
}
/**
* Return the hexidecimal color from a java.awt.Color
*
* @param c
* @return hexadecimal string
*/
public static final String toHTMLColor(Color c) {
int color = c.getRGB();
color |= 0xff000000;
String s = Integer.toHexString(color);
return s.substring(2);
}
public static final String createToolTip(String text, int width) {
final String htmlColor = toHTMLColor(TOOLTIP_COLOR);
final String toolTip = "" + text + "
";
return toolTip;
}
public static final String createToolTip(String text) {
final String htmlColor = toHTMLColor(TOOLTIP_COLOR);
final String toolTip = "" + text + "
";
return toolTip;
}
}