include/drawinglayer/primitive2d/invertprimitive2d.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  19
  20 #pragma once
  21
  22 #include <drawinglayer/drawinglayerdllapi.h>
  23
  24 #include <drawinglayer/primitive2d/groupprimitive2d.hxx>
  25
  26
  27 namespace drawinglayer::primitive2d
  28 {
  29         /** InvertPrimitive2D class
  30
  31             This is a helper class which encapsulates geometry that should be
  32             painted XOR, e.g. old cursor visualisations. It decomposes to
  33             its content, so when not supporting it, the contained geometry
  34             will be visualized normally.
  35             Unfortunately this is still needed, but hard to support on various
  36             systems. XOR painting needs read access to the target, so modern
  37             graphic systems tend to not support it anymore.
  38          */
  39         class DRAWINGLAYER_DLLPUBLIC InvertPrimitive2D final : public GroupPrimitive2D
  40         {
  41         public:
  42             /// constructor
  43             explicit InvertPrimitive2D(Primitive2DContainer&& aChildren);
  44
  45             /// provide unique ID
  46             virtual sal_uInt32 getPrimitive2DID() const override;
  47         };
  48 } // end of namespace drawinglayer::primitive2d
  49
  50
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