slideshow/source/engine/slide/userpaintoverlay.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
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  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_USERPAINTOVERLAY_HXX
  21 #define INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_USERPAINTOVERLAY_HXX
  22
  23 #include <cppcanvas/canvasgraphic.hxx>
  24
  25 #include <rgbcolor.hxx>
  26
  27 #include <memory>
  28 #include <vector>
  29
  30 /* Definition of UserPaintOverlay class */
  31
  32 namespace slideshow::internal
  33     {
  34         class EventMultiplexer;
  35         struct SlideShowContext;
  36
  37         class PaintOverlayHandler;
  38         typedef ::std::shared_ptr< class UserPaintOverlay > UserPaintOverlaySharedPtr;
  39         typedef ::std::vector< ::cppcanvas::PolyPolygonSharedPtr> PolyPolygonVector;
  40         /** Slide overlay, which can be painted into by the user.
  41
  42             This class registers itself at the EventMultiplexer,
  43             listening for mouse clicks and moves. When the mouse is
  44             dragged, a hand sketching in the selected color is shown.
  45         */
  46         class UserPaintOverlay
  47         {
  48         public:
  49             /** Create a UserPaintOverlay
  50
  51                 @param rStrokeColor
  52                 Color to use for drawing
  53
  54                 @param nStrokeWidth
  55                 Width of the stroked path
  56              */
  57             static UserPaintOverlaySharedPtr create( const RGBColor&          rStrokeColor,
  58                                                      double                   nStrokeWidth,
  59                                                      const SlideShowContext&  rContext,
  60                                                      PolyPolygonVector&&      rPolygons,
  61                                                      bool                     bActive);
  62             ~UserPaintOverlay();
  63             UserPaintOverlay(const UserPaintOverlay&) = delete;
  64             UserPaintOverlay& operator=(const UserPaintOverlay&) = delete;
  65             PolyPolygonVector const & getPolygons() const;
  66             void drawPolygons();
  67
  68         private:
  69             UserPaintOverlay( const RGBColor&          rStrokeColor,
  70                               double                   nStrokeWidth,
  71                               const SlideShowContext&  rContext,
  72                               PolyPolygonVector&&     rPolygons,
  73                               bool                    bActive );
  74
  75             ::std::shared_ptr<PaintOverlayHandler>    mpHandler;
  76             EventMultiplexer&                           mrMultiplexer;
  77         };
  78
  79 }
  80
  81 #endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_USERPAINTOVERLAY_HXX
  82
  83 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */