workspace/kdm/kfrontend/krootimage.h

   1 /*
   2
   3 Copyright (C) 1999 Matthias Hoelzer-Kluepfel <hoelzer@kde.org>
   4 Copyright (C) 2002,2004 Oswald Buddenhagen <ossi@kde.org>
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19 Boston, MA 02110-1301, USA.
  20
  21 */
  22
  23 #ifndef __KDM_KROOTIMAGE_H__
  24 #define __KDM_KROOTIMAGE_H__
  25
  26 #include <bgrender.h>
  27
  28 #include <QApplication>
  29 #include <QTimer>
  30
  31 /**
  32  * In xinerama mode, each screen is rendered separately by KBackgroundRenderer.
  33  * This class controls a set of renderers for a desktop, and collates the
  34  * images. Usage is similar to KBackgroundRenderer: connect to the imageDone
  35  * signal.
  36  */
  37 class KVirtualBGRenderer : public QObject
  38 {
  39         Q_OBJECT
  40   public:
  41         explicit KVirtualBGRenderer(const KSharedConfigPtr &config);
  42         ~KVirtualBGRenderer();
  43
  44         KBackgroundRenderer * renderer( unsigned screen );
  45         unsigned numRenderers() const { return m_numRenderers; }
  46
  47         QPixmap pixmap();
  48
  49         bool needProgramUpdate();
  50         void programUpdate();
  51
  52         bool needWallpaperChange();
  53         void changeWallpaper();
  54
  55         void desktopResized();
  56
  57         void load( bool reparseConfig = true );
  58         void start();
  59         void stop();
  60         void cleanup();
  61         void saveCacheFile();
  62         void enableTiling( bool enable );
  63
  64   signals:
  65         void imageDone();
  66
  67   private slots:
  68         void screenDone( int screen );
  69
  70   private:
  71         QSize renderSize( int screen ); // the size the renderer should be
  72         void initRenderers();
  73
  74         KSharedConfigPtr m_pConfig;
  75         float m_scaleX;
  76         float m_scaleY;
  77         int m_numRenderers;
  78         bool m_bDrawBackgroundPerScreen;
  79         bool m_bCommonScreen;
  80         QSize m_size;
  81
  82         QVector<bool> m_bFinished;
  83         QVector<KBackgroundRenderer *> m_renderer;
  84         QPixmap *m_pPixmap;
  85 };
  86
  87 class MyApplication : public QApplication
  88 {
  89         Q_OBJECT
  90
  91   public:
  92         MyApplication( const char *conf, int argc, char **argv );
  93
  94   private Q_SLOTS:
  95         void renderDone();
  96         void slotTimeout();
  97
  98   private:
  99         KVirtualBGRenderer renderer;
 100         QTimer timer;
 101 };
 102
 103 #endif // __KDM_KROOTIMAGE_H__