workspace/kwin/lib/kwinxrenderutils.h

   1 /********************************************************************
   2  KWin - the KDE window manager
   3  This file is part of the KDE project.
   4
   5 Copyright (C) 2008 Lubos Lunak <l.lunak@kde.org>
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 *********************************************************************/
  20
  21 #ifndef KWIN_XRENDERUTILS_H
  22 #define KWIN_XRENDERUTILS_H
  23
  24 #include <kwinconfig.h>
  25
  26 #ifdef KWIN_HAVE_XRENDER_COMPOSITING
  27
  28 #include <QtCore/QSharedData>
  29 #include <QtGui/QColor>
  30 #include <ksharedptr.h>
  31
  32 #include <kwinglobals.h>
  33
  34 #include <X11/extensions/Xfixes.h>
  35 #include <X11/extensions/Xrender.h>
  36
  37 /** @addtogroup kwineffects */
  38 /** @{ */
  39
  40 namespace KWin
  41 {
  42
  43 /**
  44  * Convert QRegion to XserverRegion.
  45  */
  46 KWIN_EXPORT XserverRegion toXserverRegion( QRegion region );
  47 /**
  48  * draws a round box on the renderscene
  49  */
  50 KWIN_EXPORT void xRenderRoundBox( Picture pict, const QRect &rect, int round, const QColor &c );
  51 /**
  52  * dumps a QColor into a XRenderColor
  53  */
  54 KWIN_EXPORT XRenderColor preMultiply(const QColor &c, float opacity = 1.0);
  55
  56 /** @internal */
  57 class KWIN_EXPORT XRenderPictureData
  58     : public QSharedData
  59     {
  60     public:
  61         XRenderPictureData( Picture pic = None );
  62         ~XRenderPictureData();
  63         Picture value();
  64     private:
  65         Picture picture;
  66         Q_DISABLE_COPY( XRenderPictureData )
  67     };
  68
  69 /**
  70  * @short Wrapper around XRender Picture.
  71  *
  72  * This class wraps XRender's Picture, providing proper initialization,
  73  * convenience constructors and freeing of resources.
  74  * It should otherwise act exactly like the Picture type.
  75  */
  76 class KWIN_EXPORT XRenderPicture
  77     {
  78     public:
  79         XRenderPicture( Picture pic = None );
  80         XRenderPicture( QPixmap pix );
  81         XRenderPicture( Pixmap pix, int depth );
  82         operator Picture();
  83     private:
  84         KSharedPtr< XRenderPictureData > d;
  85     };
  86
  87 inline
  88 XRenderPictureData::XRenderPictureData( Picture pic )
  89     : picture( pic )
  90     {
  91     }
  92
  93 inline
  94 XRenderPictureData::~XRenderPictureData()
  95     {
  96     if( picture != None )
  97         XRenderFreePicture( display(), picture );
  98     }
  99
 100 inline
 101 Picture XRenderPictureData::value()
 102     {
 103     return picture;
 104     }
 105
 106 inline
 107 XRenderPicture::XRenderPicture( Picture pic )
 108     : d( new XRenderPictureData( pic ))
 109     {
 110     }
 111
 112 inline
 113 XRenderPicture::operator Picture()
 114     {
 115     return d->value();
 116     }
 117
 118 /**
 119  * Creates a 1x1 Picture filled with c
 120  */
 121 KWIN_EXPORT XRenderPicture xRenderFill( const XRenderColor *c );
 122 KWIN_EXPORT XRenderPicture xRenderFill( const QColor &c );
 123
 124 } // namespace
 125
 126 #endif
 127
 128 /** @} */
 129
 130 #endif