1*b1cdbd2cSJim Jagielski /**************************************************************
2*b1cdbd2cSJim Jagielski  *
3*b1cdbd2cSJim Jagielski  * Licensed to the Apache Software Foundation (ASF) under one
4*b1cdbd2cSJim Jagielski  * or more contributor license agreements.  See the NOTICE file
5*b1cdbd2cSJim Jagielski  * distributed with this work for additional information
6*b1cdbd2cSJim Jagielski  * regarding copyright ownership.  The ASF licenses this file
7*b1cdbd2cSJim Jagielski  * to you under the Apache License, Version 2.0 (the
8*b1cdbd2cSJim Jagielski  * "License"); you may not use this file except in compliance
9*b1cdbd2cSJim Jagielski  * with the License.  You may obtain a copy of the License at
10*b1cdbd2cSJim Jagielski  *
11*b1cdbd2cSJim Jagielski  *   http://www.apache.org/licenses/LICENSE-2.0
12*b1cdbd2cSJim Jagielski  *
13*b1cdbd2cSJim Jagielski  * Unless required by applicable law or agreed to in writing,
14*b1cdbd2cSJim Jagielski  * software distributed under the License is distributed on an
15*b1cdbd2cSJim Jagielski  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*b1cdbd2cSJim Jagielski  * KIND, either express or implied.  See the License for the
17*b1cdbd2cSJim Jagielski  * specific language governing permissions and limitations
18*b1cdbd2cSJim Jagielski  * under the License.
19*b1cdbd2cSJim Jagielski  *
20*b1cdbd2cSJim Jagielski  *************************************************************/
21*b1cdbd2cSJim Jagielski 
22*b1cdbd2cSJim Jagielski 
23*b1cdbd2cSJim Jagielski 
24*b1cdbd2cSJim Jagielski #ifndef _CPPCANVAS_CACHEDPRIMITIVEBASE_HXX
25*b1cdbd2cSJim Jagielski #define _CPPCANVAS_CACHEDPRIMITIVEBASE_HXX
26*b1cdbd2cSJim Jagielski 
27*b1cdbd2cSJim Jagielski #include <com/sun/star/uno/Reference.hxx>
28*b1cdbd2cSJim Jagielski #include <com/sun/star/rendering/XCanvas.hpp>
29*b1cdbd2cSJim Jagielski 
30*b1cdbd2cSJim Jagielski #include <cppcanvas/canvas.hxx>
31*b1cdbd2cSJim Jagielski #include <boost/utility.hpp>
32*b1cdbd2cSJim Jagielski 
33*b1cdbd2cSJim Jagielski #include "action.hxx"
34*b1cdbd2cSJim Jagielski 
35*b1cdbd2cSJim Jagielski namespace basegfx { class B2DHomMatrix; }
36*b1cdbd2cSJim Jagielski 
37*b1cdbd2cSJim Jagielski 
38*b1cdbd2cSJim Jagielski /* Definition of internal::CachedPrimitiveBase class */
39*b1cdbd2cSJim Jagielski 
40*b1cdbd2cSJim Jagielski namespace cppcanvas
41*b1cdbd2cSJim Jagielski {
42*b1cdbd2cSJim Jagielski     namespace internal
43*b1cdbd2cSJim Jagielski     {
44*b1cdbd2cSJim Jagielski         /** Base class providing cached re-rendering, if XCanvas
45*b1cdbd2cSJim Jagielski             returns XCachedPrimitive
46*b1cdbd2cSJim Jagielski 
47*b1cdbd2cSJim Jagielski             Derive from this class and implement private render()
48*b1cdbd2cSJim Jagielski             method to perform the actual primitive rendering. Return
49*b1cdbd2cSJim Jagielski             cached primitive into given reference. Next time this
50*b1cdbd2cSJim Jagielski             class' public render() method gets called, the cached
51*b1cdbd2cSJim Jagielski             representation is taken.
52*b1cdbd2cSJim Jagielski          */
53*b1cdbd2cSJim Jagielski         class CachedPrimitiveBase : public Action,
54*b1cdbd2cSJim Jagielski                                     private ::boost::noncopyable
55*b1cdbd2cSJim Jagielski         {
56*b1cdbd2cSJim Jagielski         public:
57*b1cdbd2cSJim Jagielski             /** Constructor
58*b1cdbd2cSJim Jagielski 
59*b1cdbd2cSJim Jagielski                 @param rCanvas
60*b1cdbd2cSJim Jagielski                 Canvas on which this primitive is to appear
61*b1cdbd2cSJim Jagielski 
62*b1cdbd2cSJim Jagielski                 @param bOnlyRedrawWithSameTransform
63*b1cdbd2cSJim Jagielski                 When true, this class only reuses the cached
64*b1cdbd2cSJim Jagielski                 primitive, if the overall transformation stays the
65*b1cdbd2cSJim Jagielski                 same. Otherwise, repaints are always performed via the
66*b1cdbd2cSJim Jagielski                 cached primitive.
67*b1cdbd2cSJim Jagielski              */
68*b1cdbd2cSJim Jagielski             CachedPrimitiveBase( const CanvasSharedPtr& rCanvas,
69*b1cdbd2cSJim Jagielski                                  bool                   bOnlyRedrawWithSameTransform );
~CachedPrimitiveBase()70*b1cdbd2cSJim Jagielski             virtual ~CachedPrimitiveBase() {}
71*b1cdbd2cSJim Jagielski 
72*b1cdbd2cSJim Jagielski             virtual bool render( const ::basegfx::B2DHomMatrix& rTransformation ) const;
73*b1cdbd2cSJim Jagielski 
74*b1cdbd2cSJim Jagielski         protected:
75*b1cdbd2cSJim Jagielski             using Action::render;
76*b1cdbd2cSJim Jagielski 
77*b1cdbd2cSJim Jagielski         private:
78*b1cdbd2cSJim Jagielski             virtual bool render( ::com::sun::star::uno::Reference<
79*b1cdbd2cSJim Jagielski                                      ::com::sun::star::rendering::XCachedPrimitive >& rCachedPrimitive,
80*b1cdbd2cSJim Jagielski                                  const ::basegfx::B2DHomMatrix&                       rTransformation ) const = 0;
81*b1cdbd2cSJim Jagielski 
82*b1cdbd2cSJim Jagielski             CanvasSharedPtr                                             mpCanvas;
83*b1cdbd2cSJim Jagielski             mutable ::com::sun::star::uno::Reference<
84*b1cdbd2cSJim Jagielski                     ::com::sun::star::rendering::XCachedPrimitive > 	mxCachedPrimitive;
85*b1cdbd2cSJim Jagielski             mutable ::basegfx::B2DHomMatrix                             maLastTransformation;
86*b1cdbd2cSJim Jagielski             const bool                                                  mbOnlyRedrawWithSameTransform;
87*b1cdbd2cSJim Jagielski         };
88*b1cdbd2cSJim Jagielski     }
89*b1cdbd2cSJim Jagielski }
90*b1cdbd2cSJim Jagielski 
91*b1cdbd2cSJim Jagielski #endif /*_CPPCANVAS_CACHEDPRIMITIVEBASE_HXX */
92