svx/inc/sdr/overlay/overlaymanagerbuffered.hxx

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  19
  20 #ifndef INCLUDED_SVX_INC_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
  21 #define INCLUDED_SVX_INC_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
  22
  23 #include <svx/sdr/overlay/overlaymanager.hxx>
  24 #include <basegfx/range/b2irange.hxx>
  25 #include <vcl/virdev.hxx>
  26 #include <vcl/idle.hxx>
  27
  28
  29 namespace sdr
  30 {
  31     namespace overlay
  32     {
  33         class OverlayManagerBuffered final : public OverlayManager
  34         {
  35             // The VirtualDevice for draw window content buffering, this
  36             // is the view content without overlay
  37             ScopedVclPtr<VirtualDevice>             mpBufferDevice;
  38
  39             // #i73602# The VirtualDevice for OverlayPaint buffering. This
  40             // is an extra device to avoid flickering of overlay paints
  41             ScopedVclPtr<VirtualDevice>             mpOutputBufferDevice;
  42
  43             // Idle for buffering
  44             Idle                                    maBufferIdle;
  45
  46             // Range for buffering (in pixel to be independent from mapMode)
  47             basegfx::B2IRange                       maBufferRememberedRangePixel;
  48
  49             // link for timer
  50             DECL_LINK(ImpBufferTimerHandler, Timer*, void);
  51
  52             // Internal methods for buffering
  53             void ImpPrepareBufferDevice();
  54             void ImpRestoreBackground() const ;
  55             void ImpRestoreBackground(const vcl::Region& rRegionPixel) const;
  56             void ImpSaveBackground(const vcl::Region& rRegion, OutputDevice* pPreRenderDevice);
  57
  58             OverlayManagerBuffered(OutputDevice& rOutputDevice);
  59             virtual ~OverlayManagerBuffered() override;
  60
  61         public:
  62             static rtl::Reference<OverlayManager> create(OutputDevice& rOutputDevice);
  63
  64             // complete redraw
  65             virtual void completeRedraw(const vcl::Region& rRegion, OutputDevice* pPreRenderDevice = nullptr) const override;
  66
  67             // flush. Do buffered updates.
  68             virtual void flush() override;
  69
  70             // invalidate the given range at local OutputDevice
  71             virtual void invalidateRange(const basegfx::B2DRange& rRange) override;
  72         };
  73     } // end of namespace overlay
  74 } // end of namespace sdr
  75
  76
  77 #endif // INCLUDED_SVX_INC_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
  78
  79 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */