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 #ifndef _SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX 25 #define _SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX 26 27 #include <svx/sdr/overlay/overlaymanager.hxx> 28 #include <basegfx/range/b2irange.hxx> 29 #include <vcl/virdev.hxx> 30 31 ////////////////////////////////////////////////////////////////////////////// 32 // predeclarations 33 34 class VirtualDevice; 35 36 ////////////////////////////////////////////////////////////////////////////// 37 38 namespace sdr 39 { 40 namespace overlay 41 { 42 class OverlayManagerBuffered : public OverlayManager 43 { 44 protected: 45 // The VirtualDevice for draw window content buffering, this 46 // is the view content without overlay 47 VirtualDevice maBufferDevice; 48 49 // #i73602# The VirtualDevice for OverlayPaint buffering. This 50 // is an extra device to avoid flickering of overlay paints 51 VirtualDevice maOutputBufferDevice; 52 53 // Timer for buffering 54 Timer maBufferTimer; 55 56 // Range for buffering (in pixel to be independent from mapMode) 57 basegfx::B2IRange maBufferRememberedRangePixel; 58 59 // bitfield 60 // Flag to decide if PreRendering shall be used for overlay refreshes. 61 // Default is false. 62 unsigned mbRefreshWithPreRendering : 1; 63 64 // link for timer 65 DECL_LINK(ImpBufferTimerHandler, AutoTimer*); 66 67 // Internal methods for buffering 68 void ImpPrepareBufferDevice(); 69 void ImpRestoreBackground() const ; 70 void ImpRestoreBackground(const Region& rRegionPixel) const; 71 void ImpSaveBackground(const Region& rRegion, OutputDevice* pPreRenderDevice = 0L); 72 73 public: 74 // when handing over another OverlayManager at construction, the OverlayObjects 75 // will be taken over from it. The new one will have added all OverlayObjects 76 // while the handed over one will have none 77 OverlayManagerBuffered( 78 OutputDevice& rOutputDevice, 79 OverlayManager* pOldOverlayManager = 0, 80 bool bRefreshWithPreRendering = false); 81 virtual ~OverlayManagerBuffered(); 82 83 // complete redraw 84 virtual void completeRedraw(const Region& rRegion, OutputDevice* pPreRenderDevice = 0L) const; 85 86 // flush. Do buffered updates. 87 virtual void flush(); 88 89 // #i68597# part of content gets copied, react on it 90 virtual void copyArea(const Point& rDestPt, const Point& rSrcPt, const Size& rSrcSize); 91 92 // restore part of background. Implemented form buffered versions only. 93 virtual void restoreBackground(const Region& rRegion) const; 94 95 // invalidate the given range at local OutputDevice 96 virtual void invalidateRange(const basegfx::B2DRange& rRange); 97 98 // access to RefreshWithPreRendering Flag 99 bool DoRefreshWithPreRendering() const { return mbRefreshWithPreRendering; } 100 void SetRefreshWithPreRendering(bool bNew); 101 }; 102 } // end of namespace overlay 103 } // end of namespace sdr 104 105 ////////////////////////////////////////////////////////////////////////////// 106 107 #endif //_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX 108 109 // eof 110