INTEGRATION: CWS canvas02 (1.1.2); FILE ADDED

2005/10/11 15:42:25 thb 1.1.2.2: #i54170# Corrected license headers
2005/08/24 22:59:10 thb 1.1.2.1: #i52876# Initial revision: base class for common XCachedPrimitive handling

1 files changed, 98 insertions, 0 deletions

diff --git a/cppcanvas/source/mtfrenderer/cachedprimitivebase.cxx b/cppcanvas/source/mtfrenderer/cachedprimitivebase.cxx
new file mode 100644
index 000000000000..94adde47c571
--- /dev/null
+++ b/cppcanvas/source/mtfrenderer/cachedprimitivebase.cxx
@@ -0,0 +1,98 @@
+/*************************************************************************
+ *
+ *  OpenOffice.org - a multi-platform office productivity suite
+ *
+ *  $RCSfile: cachedprimitivebase.cxx,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: kz $ $Date: 2005-11-02 13:39:50 $
+ *
+ *  The Contents of this file are made available subject to
+ *  the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ *    GNU Lesser General Public License Version 2.1
+ *    =============================================
+ *    Copyright 2005 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
+ *
+ ************************************************************************/
+
+#include <rtl/logfile.hxx>
+
+#include <com/sun/star/rendering/RepaintResult.hpp>
+
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <canvas/canvastools.hxx>
+#include <cppcanvas/canvas.hxx>
+
+#include "cachedprimitivebase.hxx"
+
+using namespace ::com::sun::star;
+
+namespace cppcanvas
+{
+    namespace internal
+    {
+        CachedPrimitiveBase::CachedPrimitiveBase( const CanvasSharedPtr& rCanvas,
+                                                  bool                   bOnlyRedrawWithSameTransform ) :
+            mpCanvas( rCanvas ),
+            mxCachedPrimitive(),
+            maLastTransformation(),
+            mbOnlyRedrawWithSameTransform( bOnlyRedrawWithSameTransform )
+        {
+            // TODO(F2): also store last view transform, and refuse to
+            // redraw if changed.
+        }
+
+        bool CachedPrimitiveBase::render( const ::basegfx::B2DHomMatrix& rTransformation ) const
+        {
+            RTL_LOGFILE_CONTEXT( aLog, "::cppcanvas::internal::CachedPrimitiveBase::render()" );
+            RTL_LOGFILE_CONTEXT_TRACE1( aLog, "::cppcanvas::internal::CachedPrimitiveBase: 0x%X", this );
+
+            const rendering::ViewState& rViewState( mpCanvas->getViewState() );
+            ::basegfx::B2DHomMatrix     aTotalTransform;
+
+            ::canvas::tools::getViewStateTransform( aTotalTransform,
+                                                    rViewState );
+            aTotalTransform *= rTransformation;
+
+            // can we use the cached primitive? For that, it must be
+            // present in the first place, and, if
+            // mbOnlyRedrawWithSameTransform is true, the overall
+            // transformation must be the same.
+            if( mxCachedPrimitive.is() &&
+                (!mbOnlyRedrawWithSameTransform ||
+                 maLastTransformation == aTotalTransform) )
+            {
+                if( mxCachedPrimitive->redraw( rViewState ) ==
+                    rendering::RepaintResult::REDRAWN )
+                {
+                    // cached repaint succeeded, done.
+                    return true;
+                }
+            }
+
+            maLastTransformation = aTotalTransform;
+
+            // delegate rendering to derived classes
+            return render( mxCachedPrimitive,
+                           rTransformation );
+        }
+    }
+}