#110496# Merge from cws_srx645_canvas01: first working version of XCanvas UNO components, for now consisting of javacanvas.uno.jar, vclcanvas.uno and directxcanvas.uno (windows only)

2004-03-18 09:38:44 +00:00
parent aac18e0575
commit 6e89341b50
51 changed files with 11852 additions and 0 deletions
--- a/canvas/source/java/BackBuffer.java
+++ b/canvas/source/java/BackBuffer.java
@@ -0,0 +1,161 @@
+/*************************************************************************
+ *
+ *  $RCSfile: BackBuffer.java,v $
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  either of the following licenses
+ *
+ *         - GNU Lesser General Public License Version 2.1
+ *         - Sun Industry Standards Source License Version 1.1
+ *
+ *  Sun Microsystems Inc., October, 2000
+ *
+ *  GNU Lesser General Public License Version 2.1
+ *  =============================================
+ *  Copyright 2000 by Sun Microsystems, Inc.
+ *  901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *
+ *  Sun Industry Standards Source License Version 1.1
+ *  =================================================
+ *  The contents of this file are subject to the Sun Industry Standards
+ *  Source License Version 1.1 (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.openoffice.org/license.html.
+ *
+ *  Software provided under this License is provided on an "AS IS" basis,
+ *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ *  See the License for the specific provisions governing your rights and
+ *  obligations concerning the Software.
+ *
+ *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ *  Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ *  All Rights Reserved.
+ *
+ *  Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+// UNO
+import com.sun.star.uno.UnoRuntime;
+import com.sun.star.uno.XComponentContext;
+import com.sun.star.uno.AnyConverter;
+import com.sun.star.uno.IQueryInterface;
+import com.sun.star.lang.XInitialization;
+import com.sun.star.lib.uno.helper.WeakBase;
+
+// OOo AWT
+import com.sun.star.awt.*;
+
+// Canvas
+import drafts.com.sun.star.rendering.*;
+
+// Java AWT
+import java.awt.*;
+import java.awt.image.*;
+import java.awt.geom.*;
+
+// system-dependent stuff
+import sun.awt.*;
+
+
+public class BackBuffer
+{
+    private BufferedImage                   backBuffer;
+    //private VolatileImage                     backBuffer;
+    private Graphics2D                      backBufferGraphics;
+    private Graphics2D                      referenceDevice;
+
+    public BackBuffer( Graphics2D _referenceDevice,
+                       int width,
+                       int height )
+    {
+        referenceDevice = _referenceDevice;
+        setSize( width, height );
+    }
+
+    public Graphics2D getGraphics()
+    {
+        return backBufferGraphics;
+    }
+
+    public void setSize( int width,
+                         int height )
+    {
+        if( backBuffer != null &&
+            width == backBuffer.getWidth() &&
+            height == backBuffer.getHeight() )
+        {
+            return;
+        }
+
+        if( backBufferGraphics != null )
+            backBufferGraphics.dispose();
+
+        if( backBuffer != null )
+            backBuffer.flush();
+
+        // TODO: Maybe VolatileImage with another BufferedImage as a backup is
+        // a tad faster here.
+        backBuffer = referenceDevice.getDeviceConfiguration().createCompatibleImage(width,
+                                                                                    height);
+//        backBuffer = referenceDevice.getDeviceConfiguration().createCompatibleVolatileImage(width,
+//                                                                                            height);
+
+        backBufferGraphics = backBuffer.createGraphics();
+        CanvasUtils.initGraphics( backBufferGraphics );
+
+        // clear the buffer to white (to have a defined state here)
+        backBufferGraphics.setColor( java.awt.Color.white );
+        backBufferGraphics.fillRect( 0,0,width,height );
+    }
+
+    public void redraw( Graphics2D graph )
+    {
+        if( graph != null &&
+            backBuffer != null )
+        {
+            CanvasUtils.printLog("BackBuffer.redraw(): using buffer of size (" +
+                                  backBuffer.getWidth() + "," + backBuffer.getHeight() + ")" );
+
+            graph.drawImage(backBuffer, 0, 0, null);
+
+            // TODO: this is just twiddled to work. I cannot be sure
+            // that this volatile backbuffer will survive in the first
+            // place, nor that it wise to leave it in VRAM.
+
+            // only flush non-volatile images
+            // CanvasUtils.postRenderImageTreatment( backBuffer );
+        }
+    }
+
+    public java.awt.Image getBackBuffer()
+    {
+        return backBuffer;
+    }
+
+    public void dispose()
+    {
+        backBufferGraphics.dispose();
+        backBuffer.flush();
+    }
+}