| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the 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 */ |
