Java example source code file (XTrayIconPeer.java)
The XTrayIconPeer.java Java example source code
/*
* Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.awt.X11;
import java.awt.*;
import java.awt.event.*;
import java.awt.peer.TrayIconPeer;
import sun.awt.*;
import java.awt.image.*;
import java.text.BreakIterator;
import java.util.concurrent.ArrayBlockingQueue;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.lang.reflect.InvocationTargetException;
import sun.util.logging.PlatformLogger;
public class XTrayIconPeer implements TrayIconPeer,
InfoWindow.Balloon.LiveArguments,
InfoWindow.Tooltip.LiveArguments
{
private static final PlatformLogger ctrLog = PlatformLogger.getLogger("sun.awt.X11.XTrayIconPeer.centering");
TrayIcon target;
TrayIconEventProxy eventProxy;
XTrayIconEmbeddedFrame eframe;
TrayIconCanvas canvas;
InfoWindow.Balloon balloon;
InfoWindow.Tooltip tooltip;
PopupMenu popup;
String tooltipString;
boolean isTrayIconDisplayed;
long eframeParentID;
final XEventDispatcher parentXED, eframeXED;
static final XEventDispatcher dummyXED = new XEventDispatcher() {
public void dispatchEvent(XEvent ev) {}
};
volatile boolean isDisposed;
boolean isParentWindowLocated;
int old_x, old_y;
int ex_width, ex_height;
final static int TRAY_ICON_WIDTH = 24;
final static int TRAY_ICON_HEIGHT = 24;
XTrayIconPeer(TrayIcon target)
throws AWTException
{
this.target = target;
eventProxy = new TrayIconEventProxy(this);
canvas = new TrayIconCanvas(target, TRAY_ICON_WIDTH, TRAY_ICON_HEIGHT);
eframe = new XTrayIconEmbeddedFrame();
eframe.setSize(TRAY_ICON_WIDTH, TRAY_ICON_HEIGHT);
eframe.add(canvas);
// Fix for 6317038: as EmbeddedFrame is instance of Frame, it is blocked
// by modal dialogs, but in the case of TrayIcon it shouldn't. So we
// set ModalExclusion property on it.
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
eframe.setModalExclusionType(Dialog.ModalExclusionType.TOOLKIT_EXCLUDE);
return null;
}
});
if (XWM.getWMID() != XWM.METACITY_WM) {
parentXED = dummyXED; // We don't like to leave it 'null'.
} else {
parentXED = new XEventDispatcher() {
// It's executed under AWTLock.
public void dispatchEvent(XEvent ev) {
if (isDisposed() || ev.get_type() != XConstants.ConfigureNotify) {
return;
}
XConfigureEvent ce = ev.get_xconfigure();
if (ctrLog.isLoggable(PlatformLogger.Level.FINE)) {
ctrLog.fine("ConfigureNotify on parent of {0}: {1}x{2}+{3}+{4} (old: {5}+{6})",
XTrayIconPeer.this, ce.get_width(), ce.get_height(),
ce.get_x(), ce.get_y(), old_x, old_y);
}
// A workaround for Gnome/Metacity (it doesn't affect the behaviour on KDE).
// On Metacity the EmbeddedFrame's parent window bounds are larger
// than TrayIcon size required (that is we need a square but a rectangle
// is provided by the Panel Notification Area). The parent's background color
// differs from the Panel's one. To hide the background we resize parent
// window so that it fits the EmbeddedFrame.
// However due to resizing the parent window it loses centering in the Panel.
// We center it when discovering that some of its side is of size greater
// than the fixed value. Centering is being done by "X" (when the parent's width
// is greater) and by "Y" (when the parent's height is greater).
// Actually we need this workaround until we could detect taskbar color.
if (ce.get_height() != TRAY_ICON_HEIGHT && ce.get_width() != TRAY_ICON_WIDTH) {
// If both the height and the width differ from the fixed size then WM
// must level at least one side to the fixed size. For some reason it may take
// a few hops (even after reparenting) and we have to skip the intermediate ones.
if (ctrLog.isLoggable(PlatformLogger.Level.FINE)) {
ctrLog.fine("ConfigureNotify on parent of {0}. Skipping as intermediate resizing.",
XTrayIconPeer.this);
}
return;
} else if (ce.get_height() > TRAY_ICON_HEIGHT) {
if (ctrLog.isLoggable(PlatformLogger.Level.FINE)) {
ctrLog.fine("ConfigureNotify on parent of {0}. Centering by \"Y\".",
XTrayIconPeer.this);
}
XlibWrapper.XMoveResizeWindow(XToolkit.getDisplay(), eframeParentID,
ce.get_x(),
ce.get_y()+ce.get_height()/2-TRAY_ICON_HEIGHT/2,
TRAY_ICON_WIDTH,
TRAY_ICON_HEIGHT);
ex_height = ce.get_height();
ex_width = 0;
} else if (ce.get_width() > TRAY_ICON_WIDTH) {
if (ctrLog.isLoggable(PlatformLogger.Level.FINE)) {
ctrLog.fine("ConfigureNotify on parent of {0}. Centering by \"X\".",
XTrayIconPeer.this);
}
XlibWrapper.XMoveResizeWindow(XToolkit.getDisplay(), eframeParentID,
ce.get_x()+ce.get_width()/2 - TRAY_ICON_WIDTH/2,
ce.get_y(),
TRAY_ICON_WIDTH,
TRAY_ICON_HEIGHT);
ex_width = ce.get_width();
ex_height = 0;
} else if (isParentWindowLocated && ce.get_x() != old_x && ce.get_y() != old_y) {
// If moving by both "X" and "Y".
// When some tray icon gets removed from the tray, a Java icon may be repositioned.
// In this case the parent window also lose centering. We have to restore it.
if (ex_height != 0) {
if (ctrLog.isLoggable(PlatformLogger.Level.FINE)) {
ctrLog.fine("ConfigureNotify on parent of {0}. Move detected. Centering by \"Y\".",
XTrayIconPeer.this);
}
XlibWrapper.XMoveWindow(XToolkit.getDisplay(), eframeParentID,
ce.get_x(),
ce.get_y() + ex_height/2 - TRAY_ICON_HEIGHT/2);
} else if (ex_width != 0) {
if (ctrLog.isLoggable(PlatformLogger.Level.FINE)) {
ctrLog.fine("ConfigureNotify on parent of {0}. Move detected. Centering by \"X\".",
XTrayIconPeer.this);
}
XlibWrapper.XMoveWindow(XToolkit.getDisplay(), eframeParentID,
ce.get_x() + ex_width/2 - TRAY_ICON_WIDTH/2,
ce.get_y());
} else {
if (ctrLog.isLoggable(PlatformLogger.Level.FINE)) {
ctrLog.fine("ConfigureNotify on parent of {0}. Move detected. Skipping.",
XTrayIconPeer.this);
}
}
}
old_x = ce.get_x();
old_y = ce.get_y();
isParentWindowLocated = true;
}
};
}
eframeXED = new XEventDispatcher() {
// It's executed under AWTLock.
XTrayIconPeer xtiPeer = XTrayIconPeer.this;
public void dispatchEvent(XEvent ev) {
if (isDisposed() || ev.get_type() != XConstants.ReparentNotify) {
return;
}
XReparentEvent re = ev.get_xreparent();
eframeParentID = re.get_parent();
if (eframeParentID == XToolkit.getDefaultRootWindow()) {
if (isTrayIconDisplayed) { // most likely Notification Area was removed
SunToolkit.executeOnEventHandlerThread(xtiPeer.target, new Runnable() {
public void run() {
SystemTray.getSystemTray().remove(xtiPeer.target);
}
});
}
return;
}
if (!isTrayIconDisplayed) {
addXED(eframeParentID, parentXED, XConstants.StructureNotifyMask);
isTrayIconDisplayed = true;
XToolkit.awtLockNotifyAll();
}
}
};
addXED(getWindow(), eframeXED, XConstants.StructureNotifyMask);
XSystemTrayPeer.getPeerInstance().addTrayIcon(this); // throws AWTException
// Wait till the EmbeddedFrame is reparented
long start = System.currentTimeMillis();
final long PERIOD = XToolkit.getTrayIconDisplayTimeout();
XToolkit.awtLock();
try {
while (!isTrayIconDisplayed) {
try {
XToolkit.awtLockWait(PERIOD);
} catch (InterruptedException e) {
break;
}
if (System.currentTimeMillis() - start > PERIOD) {
break;
}
}
} finally {
XToolkit.awtUnlock();
}
// This is unlikely to happen.
if (!isTrayIconDisplayed || eframeParentID == 0 ||
eframeParentID == XToolkit.getDefaultRootWindow())
{
throw new AWTException("TrayIcon couldn't be displayed.");
}
eframe.setVisible(true);
updateImage();
balloon = new InfoWindow.Balloon(eframe, target, this);
tooltip = new InfoWindow.Tooltip(eframe, target, this);
addListeners();
}
public void dispose() {
if (SunToolkit.isDispatchThreadForAppContext(target)) {
disposeOnEDT();
} else {
try {
SunToolkit.executeOnEDTAndWait(target, new Runnable() {
public void run() {
disposeOnEDT();
}
});
} catch (InterruptedException ie) {
} catch (InvocationTargetException ite) {}
}
}
private void disposeOnEDT() {
// All actions that is to be synchronized with disposal
// should be executed either under AWTLock, or on EDT.
// isDisposed value must be checked.
XToolkit.awtLock();
isDisposed = true;
XToolkit.awtUnlock();
removeXED(getWindow(), eframeXED);
removeXED(eframeParentID, parentXED);
eframe.realDispose();
balloon.dispose();
isTrayIconDisplayed = false;
XToolkit.targetDisposedPeer(target, this);
}
public static void suppressWarningString(Window w) {
AWTAccessor.getWindowAccessor().setTrayIconWindow(w, true);
}
public void setToolTip(String tooltip) {
tooltipString = tooltip;
}
public String getTooltipString() {
return tooltipString;
}
public void updateImage() {
Runnable r = new Runnable() {
public void run() {
canvas.updateImage(target.getImage());
}
};
if (!SunToolkit.isDispatchThreadForAppContext(target)) {
SunToolkit.executeOnEventHandlerThread(target, r);
} else {
r.run();
}
}
public void displayMessage(String caption, String text, String messageType) {
Point loc = getLocationOnScreen();
Rectangle screen = eframe.getGraphicsConfiguration().getBounds();
// Check if the tray icon is in the bounds of a screen.
if (!(loc.x < screen.x || loc.x >= screen.x + screen.width ||
loc.y < screen.y || loc.y >= screen.y + screen.height))
{
balloon.display(caption, text, messageType);
}
}
// It's synchronized with disposal by EDT.
public void showPopupMenu(int x, int y) {
if (isDisposed())
return;
assert SunToolkit.isDispatchThreadForAppContext(target);
PopupMenu newPopup = target.getPopupMenu();
if (popup != newPopup) {
if (popup != null) {
eframe.remove(popup);
}
if (newPopup != null) {
eframe.add(newPopup);
}
popup = newPopup;
}
if (popup != null) {
Point loc = ((XBaseWindow)eframe.getPeer()).toLocal(new Point(x, y));
popup.show(eframe, loc.x, loc.y);
}
}
// ******************************************************************
// ******************************************************************
private void addXED(long window, XEventDispatcher xed, long mask) {
if (window == 0) {
return;
}
XToolkit.awtLock();
try {
XlibWrapper.XSelectInput(XToolkit.getDisplay(), window, mask);
} finally {
XToolkit.awtUnlock();
}
XToolkit.addEventDispatcher(window, xed);
}
private void removeXED(long window, XEventDispatcher xed) {
if (window == 0) {
return;
}
XToolkit.awtLock();
try {
XToolkit.removeEventDispatcher(window, xed);
} finally {
XToolkit.awtUnlock();
}
}
// Private method for testing purposes.
private Point getLocationOnScreen() {
return eframe.getLocationOnScreen();
}
public Rectangle getBounds() {
Point loc = getLocationOnScreen();
return new Rectangle(loc.x, loc.y, loc.x + TRAY_ICON_WIDTH, loc.y + TRAY_ICON_HEIGHT);
}
void addListeners() {
canvas.addMouseListener(eventProxy);
canvas.addMouseMotionListener(eventProxy);
}
long getWindow() {
return ((XEmbeddedFramePeer)eframe.getPeer()).getWindow();
}
public boolean isDisposed() {
return isDisposed;
}
public String getActionCommand() {
return target.getActionCommand();
}
static class TrayIconEventProxy implements MouseListener, MouseMotionListener {
XTrayIconPeer xtiPeer;
TrayIconEventProxy(XTrayIconPeer xtiPeer) {
this.xtiPeer = xtiPeer;
}
public void handleEvent(MouseEvent e) {
//prevent DRAG events from being posted with TrayIcon source(CR 6565779)
if (e.getID() == MouseEvent.MOUSE_DRAGGED) {
return;
}
// Event handling is synchronized with disposal by EDT.
if (xtiPeer.isDisposed()) {
return;
}
Point coord = XBaseWindow.toOtherWindow(xtiPeer.getWindow(),
XToolkit.getDefaultRootWindow(),
e.getX(), e.getY());
if (e.isPopupTrigger()) {
xtiPeer.showPopupMenu(coord.x, coord.y);
}
e.translatePoint(coord.x - e.getX(), coord.y - e.getY());
// This is a hack in order to set non-Component source to MouseEvent
// instance.
// In some cases this could lead to unpredictable result (e.g. when
// other class tries to cast source field to Component).
// We already filter DRAG events out (CR 6565779).
e.setSource(xtiPeer.target);
XToolkit.postEvent(XToolkit.targetToAppContext(e.getSource()), e);
}
public void mouseClicked(MouseEvent e) {
if ((e.getClickCount() > 1 || xtiPeer.balloon.isVisible()) &&
e.getButton() == MouseEvent.BUTTON1)
{
ActionEvent aev = new ActionEvent(xtiPeer.target, ActionEvent.ACTION_PERFORMED,
xtiPeer.target.getActionCommand(), e.getWhen(),
e.getModifiers());
XToolkit.postEvent(XToolkit.targetToAppContext(aev.getSource()), aev);
}
if (xtiPeer.balloon.isVisible()) {
xtiPeer.balloon.hide();
}
handleEvent(e);
}
public void mouseEntered(MouseEvent e) {
xtiPeer.tooltip.enter();
handleEvent(e);
}
public void mouseExited(MouseEvent e) {
xtiPeer.tooltip.exit();
handleEvent(e);
}
public void mousePressed(MouseEvent e) {
handleEvent(e);
}
public void mouseReleased(MouseEvent e) {
handleEvent(e);
}
public void mouseDragged(MouseEvent e) {
handleEvent(e);
}
public void mouseMoved(MouseEvent e) {
handleEvent(e);
}
}
// ***************************************
// Special embedded frame for tray icon
// ***************************************
private static class XTrayIconEmbeddedFrame extends XEmbeddedFrame {
public XTrayIconEmbeddedFrame(){
super(XToolkit.getDefaultRootWindow(), true, true);
}
public boolean isUndecorated() {
return true;
}
public boolean isResizable() {
return false;
}
// embedded frame for tray icon shouldn't be disposed by anyone except tray icon
public void dispose(){
}
public void realDispose(){
super.dispose();
}
};
// ***************************************
// Classes for painting an image on canvas
// ***************************************
static class TrayIconCanvas extends IconCanvas {
TrayIcon target;
boolean autosize;
TrayIconCanvas(TrayIcon target, int width, int height) {
super(width, height);
this.target = target;
}
// Invoke on EDT.
protected void repaintImage(boolean doClear) {
boolean old_autosize = autosize;
autosize = target.isImageAutoSize();
curW = autosize ? width : image.getWidth(observer);
curH = autosize ? height : image.getHeight(observer);
super.repaintImage(doClear || (old_autosize != autosize));
}
}
public static class IconCanvas extends Canvas {
volatile Image image;
IconObserver observer;
int width, height;
int curW, curH;
IconCanvas(int width, int height) {
this.width = curW = width;
this.height = curH = height;
}
// Invoke on EDT.
public void updateImage(Image image) {
this.image = image;
if (observer == null) {
observer = new IconObserver();
}
repaintImage(true);
}
// Invoke on EDT.
protected void repaintImage(boolean doClear) {
Graphics g = getGraphics();
if (g != null) {
try {
if (isVisible()) {
if (doClear) {
update(g);
} else {
paint(g);
}
}
} finally {
g.dispose();
}
}
}
// Invoke on EDT.
public void paint(Graphics g) {
if (g != null && curW > 0 && curH > 0) {
BufferedImage bufImage = new BufferedImage(curW, curH, BufferedImage.TYPE_INT_ARGB);
Graphics2D gr = bufImage.createGraphics();
if (gr != null) {
try {
gr.setColor(getBackground());
gr.fillRect(0, 0, curW, curH);
gr.drawImage(image, 0, 0, curW, curH, observer);
gr.dispose();
g.drawImage(bufImage, 0, 0, curW, curH, null);
} finally {
gr.dispose();
}
}
}
}
class IconObserver implements ImageObserver {
public boolean imageUpdate(final Image image, final int flags, int x, int y, int width, int height) {
if (image != IconCanvas.this.image || // if the image has been changed
!IconCanvas.this.isVisible())
{
return false;
}
if ((flags & (ImageObserver.FRAMEBITS | ImageObserver.ALLBITS |
ImageObserver.WIDTH | ImageObserver.HEIGHT)) != 0)
{
SunToolkit.executeOnEventHandlerThread(IconCanvas.this, new Runnable() {
public void run() {
repaintImage(false);
}
});
}
return (flags & ImageObserver.ALLBITS) == 0;
}
}
}
}
Other Java examples (source code examples)Here is a short list of links related to this Java XTrayIconPeer.java source code file: |
The search page
Other Java source code examples at this package level
Click here to learn more about this project
