Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 166 insertions, 0 deletions

diff --git a/embeddedobj/test/Container1/NativeView.java b/embeddedobj/test/Container1/NativeView.java
new file mode 100644
index 000000000..d94eeece1
--- /dev/null
+++ b/embeddedobj/test/Container1/NativeView.java
@@ -0,0 +1,166 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you 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 .
+ */
+package embeddedobj.test;
+
+// __________ Imports __________
+
+import java.awt.*;
+import java.lang.*;
+import java.awt.event.*;
+
+// __________ Implementation __________
+
+/**
+ * Class to pass the system window handle to the OpenOffice.org toolkit.
+ * It use special JNI methods to get the system handle of used java window.
+ *
+ * Attention!
+ * Use JNI functions on already visible canvas objects only!
+ * Otherwise they can make some trouble.
+ *
+ */
+
+public class NativeView extends java.awt.Canvas
+{
+
+
+    /**
+     * ctor
+     * Does nothing really.
+     * We can use our JNI mechanism for an already visible
+     * canvas only. So we override the method for showing ( "setVisible()" )
+     * and make our initialization there. But we try to show an empty clean
+     * window till there.
+     */
+    public NativeView()
+    {
+        maHandle = null;
+        maSystem = 0;
+        this.setBackground( Color.white );
+    }
+
+
+
+    /**
+     * Override this method to make necessary initializations here.
+     * ( e.g. get the window handle and necessary system information )
+     *
+     * Why here?
+     * Because the handle seems to be available for already-visible windows
+     * only. So it's the best place to get it. The special helper method
+     * can be called more than once - but call native code one time only
+     * and save the handle and the system type on our members maHandle/maSystem!
+     */
+    public void setVisible( boolean bState )
+    {
+        getHWND();
+    }
+
+
+
+    /**
+     * to guarantee right resize handling inside a swing container
+     * ( e.g. JSplitPane ) we must provide some information about our
+     * preferred/minimum and maximum size.
+     */
+    public Dimension getPreferredSize()
+    {
+        return new Dimension( 800, 600 );
+    }
+
+    public Dimension getMaximumSize()
+    {
+        return new Dimension( 1024, 768 );
+    }
+
+    public Dimension getMinimumSize()
+    {
+        return new Dimension( 300, 300 );
+    }
+
+
+
+    /**
+     * override paint routine to show provide against
+     * repaint errors if no office view is really plugged
+     * into this canvas.
+     * If handle is present - we shouldn't paint anything further.
+     * May the remote window is already plugged. In such case we
+     * shouldn't paint it over.
+     */
+    public void paint( Graphics aGraphic )
+    {
+        if( maHandle == null )
+        {
+            Dimension aSize = getSize();
+            aGraphic.clearRect( 0, 0, aSize.width, aSize.height );
+        }
+    }
+
+
+
+    /**
+     * JNI interface of this class
+     * These two methods are implemented by using JNI mechanismen.
+     * The will be used to get the platform dependent window handle
+     * of a java awt canvas. This handle can be used to create an office
+     * window as direct child of it. So it's possible to plug Office
+     * windows in a java UI container.
+     *
+     * Note:
+     * Native code for Windows registers a special function pointer to handle
+     * window messages... But if it doesn't check for an already-registered
+     * instance of this handler it will do it twice and produce a stack overflow
+     * because such method calls itself in a never-ending loop...
+     * So we try to use the JNI code one time only and save already-obtained
+     * information inside this class.
+     */
+    public  native int  getNativeWindowSystemType();
+    private native long getNativeWindow(); // private! => use getHWND() with cache mechanism!
+
+    public Integer getHWND()
+    {
+        if( maHandle == null )
+        {
+            maHandle = Integer.valueOf( (int )getNativeWindow() );
+            maSystem = getNativeWindowSystemType();
+        }
+        return maHandle;
+    }
+
+
+
+    /**
+     * for using of the JNI methods it's necessary to load
+     * system library which exports it.
+     */
+    static
+    {
+        System.loadLibrary( "nativeview" );
+    }
+
+
+
+    /**
+     * @member  maHandle    system window handle
+     * @member  maSystem    info about currently used platform
+     */
+    public Integer maHandle ;
+    public int     maSystem ;
+}
+