1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_cppcanvas.hxx" 26 27 #include <rtl/logfile.hxx> 28 29 #include <com/sun/star/rendering/RepaintResult.hpp> 30 31 #include <basegfx/matrix/b2dhommatrix.hxx> 32 #include <canvas/canvastools.hxx> 33 #include <cppcanvas/canvas.hxx> 34 35 #include "cachedprimitivebase.hxx" 36 37 using namespace ::com::sun::star; 38 39 namespace cppcanvas 40 { 41 namespace internal 42 { CachedPrimitiveBase(const CanvasSharedPtr & rCanvas,bool bOnlyRedrawWithSameTransform)43 CachedPrimitiveBase::CachedPrimitiveBase( const CanvasSharedPtr& rCanvas, 44 bool bOnlyRedrawWithSameTransform ) : 45 mpCanvas( rCanvas ), 46 mxCachedPrimitive(), 47 maLastTransformation(), 48 mbOnlyRedrawWithSameTransform( bOnlyRedrawWithSameTransform ) 49 { 50 // TODO(F2): also store last view transform, and refuse to 51 // redraw if changed. 52 } 53 render(const::basegfx::B2DHomMatrix & rTransformation) const54 bool CachedPrimitiveBase::render( const ::basegfx::B2DHomMatrix& rTransformation ) const 55 { 56 RTL_LOGFILE_CONTEXT( aLog, "::cppcanvas::internal::CachedPrimitiveBase::render()" ); 57 RTL_LOGFILE_CONTEXT_TRACE1( aLog, "::cppcanvas::internal::CachedPrimitiveBase: 0x%X", this ); 58 59 const rendering::ViewState& rViewState( mpCanvas->getViewState() ); 60 ::basegfx::B2DHomMatrix aTotalTransform; 61 62 ::canvas::tools::getViewStateTransform( aTotalTransform, 63 rViewState ); 64 aTotalTransform *= rTransformation; 65 66 // can we use the cached primitive? For that, it must be 67 // present in the first place, and, if 68 // mbOnlyRedrawWithSameTransform is true, the overall 69 // transformation must be the same. 70 if( mxCachedPrimitive.is() && 71 (!mbOnlyRedrawWithSameTransform || 72 maLastTransformation == aTotalTransform) ) 73 { 74 if( mxCachedPrimitive->redraw( rViewState ) == 75 rendering::RepaintResult::REDRAWN ) 76 { 77 // cached repaint succeeded, done. 78 return true; 79 } 80 } 81 82 maLastTransformation = aTotalTransform; 83 84 // delegate rendering to derived classes 85 return render( mxCachedPrimitive, 86 rTransformation ); 87 } 88 } 89 } 90