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/* vi: ts=8 sts=4 sw=4
* kate: space-indent on; tab-width 8; indent-width 4; indent-mode cstyle;
*
* This file is part of the KDE project, module kdesktop.
* Copyright (C) 1999 Geert Jansen <g.t.jansen@stud.tue.nl>
*
* You can Freely distribute this program under the GNU Library General
* Public License. See the file "COPYING.LIB" for the exact licensing terms.
*/
#ifndef BGRender_h_Included
#define BGRender_h_Included
#include <qobject.h>
#include <qptrvector.h>
#include <qimage.h>
#include <qpixmap.h>
#include "bgsettings.h"
class QSize;
class QRect;
class QString;
class QTimer;
class KConfig;
class KProcess;
class KTempFile;
class KShellProcess;
class KStandardDirs;
/**
* This class renders a desktop background to a QImage. The operation is
* asynchronous: connect to the signal imageDone() to find out when the
* rendering is finished. It also has support for preview images, like
* the monitor in kcmdisplay.
*/
class KBackgroundRenderer:
public QObject,
public KBackgroundSettings
{
Q_OBJECT
public:
KBackgroundRenderer(int desk, int screen, bool drawBackgroundPerScreen, KConfig *config=0);
~KBackgroundRenderer();
void load(int desk, int screen, bool drawBackgroundPerScreen, bool reparseConfig=true);
void setPreview(const QSize &size);
void setSize(const QSize &size);
QPixmap pixmap();
QImage image();
bool isActive() { return m_State & Rendering; }
void cleanup();
void saveCacheFile();
void enableTiling( bool enable ) { m_TilingEnabled = enable; }
public slots:
void start(bool enableBusyCursor = false);
void stop();
void desktopResized();
signals:
void imageDone(int desk, int screen);
void programFailure(int desk, int exitstatus); //Guaranteed either programFailure or
void programSuccess(int desk); //programSuccess is emitted after imageDone
private slots:
void slotBackgroundDone(KProcess *);
void render();
void done();
private:
enum { Error, Wait, WaitUpdate, Done };
enum { Rendering = 1, InitCheck = 2,
BackgroundStarted = 4, BackgroundDone = 8,
WallpaperStarted = 0x10, WallpaperDone = 0x20,
AllDone = 0x40 };
QString buildCommand();
void createTempFile();
void tile(QImage& dst, QRect rect, const QImage& src);
void blend(QImage& dst, QRect dr, const QImage& src, QPoint soffs = QPoint(0, 0), int blendFactor=100);
void wallpaperBlend();
void fastWallpaperBlend();
void fullWallpaperBlend();
int doBackground(bool quit=false);
int doWallpaper(bool quit=false);
void setBusyCursor(bool isBusy);
QString cacheFileName();
bool useCacheFile() const;
bool canTile() const;
bool m_isBusyCursor;
bool m_enableBusyCursor;
bool m_bPreview;
int m_State;
bool m_Cached;
bool m_TilingEnabled;
KTempFile* m_Tempfile;
QSize m_Size, m_rSize;
QRect m_WallpaperRect;
QImage m_Image, m_Background, m_Wallpaper;
QPixmap m_Pixmap;
QTimer *m_pTimer;
KStandardDirs *m_pDirs;
KShellProcess *m_pProc;
};
/**
* In xinerama mode, each screen is rendered seperately by KBackgroundRenderer.
* This class controls a set of renderers for a desktop, and coallates the
* images. Usage is similar to KBackgroundRenderer: connect to the imageDone
* signal.
*/
class KVirtualBGRenderer : public QObject
{
Q_OBJECT
public:
KVirtualBGRenderer(int desk, KConfig *config=0l);
~KVirtualBGRenderer();
KBackgroundRenderer * renderer(unsigned screen);
unsigned numRenderers() const { return m_numRenderers; }
QPixmap pixmap();
void setPreview(const QSize & size);
bool needProgramUpdate();
void programUpdate();
bool needWallpaperChange();
void changeWallpaper();
int hash();
bool isActive();
void setEnabled( bool enable );
void desktopResized();
void load(int desk, bool reparseConfig=true);
void start();
void stop();
void cleanup();
void saveCacheFile();
void enableTiling( bool enable );
signals:
void imageDone(int desk);
private slots:
void screenDone(int desk, int screen);
private:
QSize renderSize(int screen); // the size the renderer should be
void initRenderers();
KConfig *m_pConfig;
float m_scaleX;
float m_scaleY;
int m_desk;
unsigned m_numRenderers;
bool m_bDrawBackgroundPerScreen;
bool m_bCommonScreen;
bool m_bDeleteConfig;
QSize m_size;
QMemArray<bool> m_bFinished;
QPtrVector<KBackgroundRenderer> m_renderer;
QPixmap *m_pPixmap;
};
#endif // BGRender_h_Included
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