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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _CPPCANVAS_CACHEDPRIMITIVEBASE_HXX
+#define _CPPCANVAS_CACHEDPRIMITIVEBASE_HXX
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/rendering/XCanvas.hpp>
+
+#include <cppcanvas/canvas.hxx>
+#include <boost/utility.hpp>
+
+#include "action.hxx"
+
+namespace basegfx { class B2DHomMatrix; }
+
+
+/* Definition of internal::CachedPrimitiveBase class */
+
+namespace cppcanvas
+{
+ namespace internal
+ {
+ /** Base class providing cached re-rendering, if XCanvas
+ returns XCachedPrimitive
+
+ Derive from this class and implement private render()
+ method to perform the actual primitive rendering. Return
+ cached primitive into given reference. Next time this
+ class' public render() method gets called, the cached
+ representation is taken.
+ */
+ class CachedPrimitiveBase : public Action,
+ private ::boost::noncopyable
+ {
+ public:
+ /** Constructor
+
+ @param rCanvas
+ Canvas on which this primitive is to appear
+
+ @param bOnlyRedrawWithSameTransform
+ When true, this class only reuses the cached
+ primitive, if the overall transformation stays the
+ same. Otherwise, repaints are always performed via the
+ cached primitive.
+ */
+ CachedPrimitiveBase( const CanvasSharedPtr& rCanvas,
+ bool bOnlyRedrawWithSameTransform );
+ virtual ~CachedPrimitiveBase() {}
+
+ virtual bool render( const ::basegfx::B2DHomMatrix& rTransformation ) const;
+
+ protected:
+ using Action::render;
+
+ private:
+ virtual bool render( ::com::sun::star::uno::Reference<
+ ::com::sun::star::rendering::XCachedPrimitive >& rCachedPrimitive,
+ const ::basegfx::B2DHomMatrix& rTransformation ) const = 0;
+
+ CanvasSharedPtr mpCanvas;
+ mutable ::com::sun::star::uno::Reference<
+ ::com::sun::star::rendering::XCachedPrimitive > mxCachedPrimitive;
+ mutable ::basegfx::B2DHomMatrix maLastTransformation;
+ const bool mbOnlyRedrawWithSameTransform;
+ };
+ }
+}
+
+#endif /*_CPPCANVAS_CACHEDPRIMITIVEBASE_HXX */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */