include/vcl/wall.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  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
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_VCL_WALL_HXX
  21 #define INCLUDED_VCL_WALL_HXX
  22
  23 #include <tools/color.hxx>
  24 #include <tools/gen.hxx>
  25 #include <vcl/bitmapex.hxx>
  26 #include <vcl/gradient.hxx>
  27 #include <vcl/dllapi.h>
  28 #include <optional>
  29
  30 enum class WallpaperStyle
  31 {
  32     NONE,
  33     Tile,
  34     Center,
  35     Scale,
  36     TopLeft,
  37     Top,
  38     TopRight,
  39     Left,
  40     Right,
  41     BottomLeft,
  42     Bottom,
  43     BottomRight,
  44     ApplicationGradient          // defines a gradient that internally covers the whole application
  45                                  // and uses a color derived from the face color
  46 };
  47
  48 class VCL_DLLPUBLIC Wallpaper
  49 {
  50 public:
  51     SAL_DLLPRIVATE void             ImplSetCachedBitmap( const BitmapEx& rBmp ) const;
  52     SAL_DLLPRIVATE const BitmapEx*  ImplGetCachedBitmap() const;
  53     SAL_DLLPRIVATE void             ImplReleaseCachedBitmap() const;
  54
  55 private:
  56     SAL_DLLPRIVATE static Gradient  ImplGetApplicationGradient();
  57
  58 public:
  59                     Wallpaper();
  60                     Wallpaper( const Wallpaper& rWallpaper );
  61                     Wallpaper( Wallpaper&& rWallpaper );
  62                     Wallpaper( const Color& rColor );
  63                     explicit Wallpaper( const BitmapEx& rBmpEx );
  64                     ~Wallpaper();
  65
  66     void            SetColor( const Color& rColor );
  67     const Color&    GetColor() const { return maColor; }
  68
  69     void            SetStyle( WallpaperStyle eStyle );
  70     WallpaperStyle  GetStyle() const { return meStyle; }
  71
  72     void            SetBitmap( const BitmapEx& rBitmap );
  73     const BitmapEx & GetBitmap() const;
  74     bool            IsBitmap() const;
  75
  76     void            SetGradient( const Gradient& rGradient );
  77     Gradient        GetGradient() const;
  78     bool            IsGradient() const;
  79
  80     void            SetRect( const tools::Rectangle& rRect ) { maRect = rRect; }
  81     const tools::Rectangle & GetRect() const { return maRect; }
  82     bool            IsRect() const;
  83
  84     bool            IsFixed() const;
  85     bool            IsScrollable() const;
  86
  87     Wallpaper&      operator=( const Wallpaper& rWallpaper );
  88     Wallpaper&      operator=( Wallpaper&& rWallpaper );
  89
  90     bool            operator==( const Wallpaper& rWallpaper ) const;
  91
  92     bool            IsEmpty() const
  93     {
  94         return GetStyle() == WallpaperStyle::NONE && GetColor() == COL_TRANSPARENT &&
  95                !IsBitmap() && !IsGradient() && !IsRect();
  96     }
  97
  98     friend SvStream& ReadWallpaper( SvStream& rIStm, Wallpaper& rWallpaper );
  99     friend SvStream& WriteWallpaper( SvStream& rOStm, const Wallpaper& rWallpaper );
 100 private:
 101     tools::Rectangle            maRect;
 102     BitmapEx                    maBitmap;
 103     mutable BitmapEx            maCache;
 104     std::optional<Gradient>     mpGradient;
 105     Color                       maColor;
 106     WallpaperStyle              meStyle;
 107 };
 108
 109 #endif // INCLUDED_VCL_WALL_HXX
 110
 111 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */