Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 112 insertions, 0 deletions

diff --git a/kdecore/kipc.cpp b/kdecore/kipc.cpp
new file mode 100644
index 000000000..087f28c86
--- /dev/null
+++ b/kdecore/kipc.cpp
@@ -0,0 +1,112 @@
+/* This file is part of the KDE libraries
+
+   Copyright (C) 1999 Mattias Ettrich (ettrich@kde.org)
+   Copyright (C) 1999,2000 Geert Jansen <jansen@kde.org>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+
+/*
+ * kipc.cpp: Send a message to one/all KDE apps.
+ *
+ * $Id$
+ */
+#include "config.h"
+
+#include <qwindowdefs.h>
+
+#if defined Q_WS_X11
+#include <X11/X.h> 
+#include <X11/Xlib.h> 
+#include <kxerrorhandler.h> 
+#endif
+
+#include <kipc.h>
+
+
+#if defined Q_WS_X11
+static long getSimpleProperty(Window w, Atom a)
+{
+    Atom real_type;
+    int format;
+    unsigned long n, extra, res = 0;
+    int status;
+    unsigned char *p = 0;
+
+    status = XGetWindowProperty(qt_xdisplay(), w, a, 0L, 1L, False, a,
+            &real_type, &format, &n, &extra, &p);
+    if ((status == Success) && (n == 1) && (format == 32))
+	res = *(unsigned long*)p;
+    if (p) XFree(p);
+    return res;
+}
+#endif
+
+void KIPC::sendMessage(Message msg, WId w, int data)
+{
+#if defined Q_WS_X11
+    static Atom a = 0;
+    if (a == 0)
+	a = XInternAtom(qt_xdisplay(), "KIPC_COMM_ATOM", False);
+    XEvent ev;
+    ev.xclient.type = ClientMessage;
+    ev.xclient.display = qt_xdisplay();
+    ev.xclient.window = (Window) w;
+    ev.xclient.message_type = a;
+    ev.xclient.format = 32;
+    ev.xclient.data.l[0] = msg;
+    ev.xclient.data.l[1] = data;
+    XSendEvent(qt_xdisplay(), (Window) w, False, 0L, &ev);
+
+    // KDE 1 support
+    static Atom kde1 = 0;
+    if ( msg == PaletteChanged || msg == FontChanged ) {
+	if ( kde1 == 0 )
+	    kde1 = XInternAtom(qt_xdisplay(), "KDEChangeGeneral", False );
+	ev.xclient.message_type = kde1;
+	XSendEvent(qt_xdisplay(), (Window) w, False, 0L, &ev);
+    }
+
+#endif
+}
+
+
+void KIPC::sendMessageAll(Message msg, int data)
+{
+#if defined Q_WS_X11
+    unsigned int i, nrootwins;
+    Window dw1, dw2, *rootwins = 0;
+    Display *dpy = qt_xdisplay();
+    int screen_count = ScreenCount(dpy);
+
+    KXErrorHandler handler;
+    for (int s = 0; s < screen_count; s++) {
+	Window root = RootWindow(dpy, s);
+
+	XQueryTree(dpy, root, &dw1, &dw2, &rootwins, &nrootwins);
+	Atom a = XInternAtom(qt_xdisplay(), "KDE_DESKTOP_WINDOW", False);
+	for (i = 0; i < nrootwins; i++)
+	    {
+		if (getSimpleProperty(rootwins[i], a) != 0L)
+		    sendMessage(msg, rootwins[i], data);
+	    }
+        XFree((char *) rootwins);
+    }
+    XSync(dpy,False);
+#endif
+}
+