Move krootbacking executable from kdeartwork to kdebase

Reenable HAL media manager
Fix system tray with ARGB visuals (again)
Beautify logout process


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1249834 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 179 insertions, 0 deletions

diff --git a/krootbacking/krootbacking.h b/krootbacking/krootbacking.h
new file mode 100644
index 000000000..12d6b1bfd
--- /dev/null
+++ b/krootbacking/krootbacking.h
@@ -0,0 +1,179 @@
+/***************************************************************************
+ *   Copyright (C) 2011 by Timothy Pearson <kb9vqf@pearsoncomputing.net>   *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
+ ***************************************************************************/
+
+
+#ifndef KROOTBACKING_H
+#define KROOTBACKING_H
+
+#include <stdlib.h>
+
+#include <tqobject.h>
+#include <tqcolor.h>
+#include <kdelibs_export.h>
+
+#ifndef Q_WS_QWS //FIXME
+
+class TQRect;
+class TQWidget;
+class TQTimer;
+class KSharedPixmap;
+class KRootBackingData;
+
+/**
+ * Gets the current full shared desktop pixmap and feeds it to xscreensaver
+ *
+ * @author Timothy Pearson <kb9vqf@pearsoncomputing.net>
+ */
+class KRootBacking: public TQObject
+{
+    Q_OBJECT
+
+public:
+    /**
+     * Constructs a KRootBacking.
+     */
+    KRootBacking();
+
+    /**
+     * Destructs the object.
+     */
+    virtual ~KRootBacking();
+
+    /**
+     * Checks if pseudo-transparency is available.
+     * @return @p true if transparency is available, @p false otherwise.
+     */
+    bool isAvailable() const;
+
+    /**
+     * Returns true if the KRootBacking is active.
+     */
+    bool isActive() const { return m_bActive; }
+
+    /**
+     * Returns the number of the current desktop.
+     */
+    int currentDesktop() const;
+
+#ifndef KDE_NO_COMPAT
+    /**
+     * Deprecated, use isAvailable() instead.
+     * @deprecated
+     */
+    KDE_DEPRECATED bool checkAvailable(bool) { return isAvailable(); }
+#endif
+
+    /** @since 3.2
+     * @return the fade color.
+     */
+    const TQColor &color() const { return m_FadeColor; }
+
+    /** @since 3.2
+     * @return the color opacity.
+     */
+    double opacity() const { return m_Fade; }
+
+public slots:
+    /**
+     * Starts background handling.
+     */
+    virtual void start();
+
+    /**
+     * Stops background handling.
+     */
+    virtual void stop();
+
+    /**
+     * Sets the fade effect.
+     *
+     * This effect will fade the background to the
+     * specified color.
+     * @param opacity A value between 0 and 1, indicating the opacity
+     * of the color. A value of 0 will not change the image, a value of 1
+     * will use the fade color unchanged.
+     * @param color The color to fade to.
+     */
+    void setFadeEffect(double opacity, const TQColor &color);
+
+    /**
+     * Repaints the widget background. Normally, you shouldn't need this
+     * as it is handled automatically.
+     *
+     * @param force Force a tqrepaint, even if the contents did not change.
+     */
+    void tqrepaint( bool force );
+
+    /**
+     * Repaints the widget background. Normally, you shouldn't need this
+     * as it is handled automatically. This is equivalent to calling
+     * tqrepaint( false ).
+     */
+    void tqrepaint();
+
+    /**
+     * Asks KDesktop to export the desktop background as a KSharedPixmap.
+     * This method uses DCOP to call KBackgroundIface/setExport(int).
+     */
+    void enableExports();
+
+    /**
+     * Returns the name of the shared pixmap (only needed for low level access)
+     */
+    static TQString pixmapName(int desk);
+signals:
+    /**
+     * Emitted when the background needs updating and custom painting
+     * (see setCustomPainting(bool) ) is enabled.
+     *
+     * @param pm A pixmap containing the new background.
+     */
+    void backgroundUpdated( const TQPixmap &pm );
+
+protected:
+    /**
+     * Called when the pixmap has been updated. The default implementation
+     * applies the fade effect, then sets the target's background, or emits
+     * backgroundUpdated(const TQPixmap &) depending on the painting mode.
+     */
+    virtual void updateBackground( KSharedPixmap * );
+
+private slots:
+    void slotBackgroundChanged(int);
+    void slotDone(bool);
+
+private:
+    bool m_bActive, m_bInit;
+    int m_Desk;
+    int m_timeout;
+
+    double m_Fade;
+    TQColor m_FadeColor;
+
+    TQRect m_Rect;
+    TQTimer *m_pTimer;
+    KSharedPixmap *m_pPixmap;
+    KRootBackingData *d;
+
+    void init();
+};
+
+#endif // ! Q_WS_QWS
+
+#endif // KROOTBACKING_H