include/svx/sdr/overlay/overlaymanagerbuffered.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef _SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
  21 #define _SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
  22
  23 #include <svx/sdr/overlay/overlaymanager.hxx>
  24 #include <basegfx/range/b2irange.hxx>
  25 #include <vcl/virdev.hxx>
  26
  27 //////////////////////////////////////////////////////////////////////////////
  28
  29 namespace sdr
  30 {
  31     namespace overlay
  32     {
  33         class OverlayManagerBuffered : public OverlayManager
  34         {
  35         protected:
  36             // The VirtualDevice for draw window content buffering, this
  37             // is the view content without overlay
  38             VirtualDevice                           maBufferDevice;
  39
  40             // #i73602# The VirtualDevice for OverlayPaint buffering. This
  41             // is an extra device to avoid flickering of overlay paints
  42             VirtualDevice                           maOutputBufferDevice;
  43
  44             // Timer for buffering
  45             Timer                                   maBufferTimer;
  46
  47             // Range for buffering (in pixel to be independent from mapMode)
  48             basegfx::B2IRange                       maBufferRememberedRangePixel;
  49
  50             // bitfield
  51             // Flag to decide if PreRendering shall be used for overlay refreshes.
  52             // Default is false.
  53             unsigned                                mbRefreshWithPreRendering : 1;
  54
  55             // link for timer
  56             DECL_LINK(ImpBufferTimerHandler, AutoTimer*);
  57
  58             // Internal methods for buffering
  59             void ImpPrepareBufferDevice();
  60             void ImpRestoreBackground() const ;
  61             void ImpRestoreBackground(const Region& rRegionPixel) const;
  62             void ImpSaveBackground(const Region& rRegion, OutputDevice* pPreRenderDevice = 0L);
  63
  64             OverlayManagerBuffered(
  65                 OutputDevice& rOutputDevice,
  66                 bool bRefreshWithPreRendering = false);
  67             virtual ~OverlayManagerBuffered();
  68
  69         public:
  70             static rtl::Reference<OverlayManager> create(OutputDevice& rOutputDevice,
  71                 bool bRefreshWithPreRendering = false);
  72
  73             // complete redraw
  74             virtual void completeRedraw(const Region& rRegion, OutputDevice* pPreRenderDevice = 0L) const;
  75
  76             // flush. Do buffered updates.
  77             virtual void flush();
  78
  79             // #i68597# part of content gets copied, react on it
  80             virtual void copyArea(const Point& rDestPt, const Point& rSrcPt, const Size& rSrcSize);
  81
  82             // restore part of background. Implemented form buffered versions only.
  83             virtual void restoreBackground(const Region& rRegion) const;
  84
  85             // invalidate the given range at local OutputDevice
  86             virtual void invalidateRange(const basegfx::B2DRange& rRange);
  87
  88             // access to RefreshWithPreRendering Flag
  89             bool DoRefreshWithPreRendering() const { return mbRefreshWithPreRendering; }
  90         };
  91     } // end of namespace overlay
  92 } // end of namespace sdr
  93
  94 //////////////////////////////////////////////////////////////////////////////
  95
  96 #endif //_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
  97
  98 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */