/*
 *
 * Copyright (c) 2003 Lubos Lunak <l.lunak@kde.org>
 *
 *  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 KWINDECORATION_PREVIEW_H
#define KWINDECORATION_PREVIEW_H

#include <QWidget>
//Added by qt3to4:
#include <QMouseEvent>
#include <QLabel>
#include <QResizeEvent>
#include <kdecoration.h>
#include <kdecorationbridge.h>
#include <kdecoration_plugins_p.h>

class QLabel;

class KDecorationPreviewBridge;
class KDecorationPreviewOptions;

class KDecorationPreview
    : public QWidget
    {
    Q_OBJECT
    public:
        // Note: Windows can't be added or removed without making changes to
        //       the code, since parts of it assume there's just an active
        //       and an inactive window.
        enum Windows { Inactive = 0, Active, NumWindows };

        KDecorationPreview( QWidget* parent = NULL );
        virtual ~KDecorationPreview();
        bool recreateDecoration( KDecorationPlugins* plugin );
        void enablePreview();
        void disablePreview();
        void setPreviewMask( const QRegion&, int, bool );
        QRegion unobscuredRegion( bool, const QRegion& ) const;
        QRect windowGeometry( bool ) const;
        void setTempBorderSize(KDecorationPlugins* plugin, KDecorationDefines::BorderSize size);
        void setTempButtons(KDecorationPlugins* plugin, bool customEnabled, const QString &left, const QString &right);
    protected:
        virtual void resizeEvent( QResizeEvent* );
    private:
        void positionPreviews();
        KDecorationPreviewOptions* options;
        KDecorationPreviewBridge* bridge[NumWindows];
        KDecoration* deco[NumWindows];
        QLabel* no_preview;
        QRegion mask;
    };

class KDecorationPreviewBridge
    : public KDecorationBridgeUnstable
    {
    public:
        KDecorationPreviewBridge( KDecorationPreview* preview, bool active );
        virtual bool isActive() const;
        virtual bool isCloseable() const;
        virtual bool isMaximizable() const;
        virtual MaximizeMode maximizeMode() const;
        virtual bool isMinimizable() const;
        virtual bool providesContextHelp() const;
        virtual int desktop() const;
        virtual bool isModal() const;
        virtual bool isShadeable() const;
        virtual bool isShade() const;
        virtual bool isSetShade() const;
        virtual bool keepAbove() const;
        virtual bool keepBelow() const;
        virtual bool isMovable() const;
        virtual bool isResizable() const;
        virtual NET::WindowType windowType( unsigned long supported_types ) const;
        virtual QIcon icon() const;
        virtual QString caption() const;
        virtual void processMousePressEvent( QMouseEvent* );
        virtual void showWindowMenu( const QRect &);
        virtual void showWindowMenu( const QPoint & );
        virtual void performWindowOperation( WindowOperation );
        virtual void setMask( const QRegion&, int );
        virtual bool isPreview() const;
        virtual QRect geometry() const;
        virtual QRect iconGeometry() const;
        virtual QRegion unobscuredRegion( const QRegion& r ) const;
        virtual WId windowId() const;
        virtual void closeWindow();
        virtual void maximize( MaximizeMode mode );
        virtual void minimize();
        virtual void showContextHelp();
        virtual void setDesktop( int desktop );
        virtual void titlebarDblClickOperation();
        virtual void titlebarMouseWheelOperation( int delta );
        virtual void setShade( bool set );
        virtual void setKeepAbove( bool );
        virtual void setKeepBelow( bool );
        virtual int currentDesktop() const;
        virtual QWidget* initialParentWidget() const;
        virtual Qt::WFlags initialWFlags() const;
        virtual void grabXServer( bool grab );

        virtual void repaintShadow();
        virtual bool compositingActive() const;
        virtual bool shadowsActive() const;
        virtual double opacity() const;
    private:
        KDecorationPreview* preview;
        bool active;
    };

class KDecorationPreviewOptions
    : public KDecorationOptions
    {
    public:
        KDecorationPreviewOptions();
        virtual ~KDecorationPreviewOptions();
        virtual unsigned long updateSettings();

        void setCustomBorderSize(BorderSize size);
        void setCustomTitleButtonsEnabled(bool enabled);
        void setCustomTitleButtons(const QString &left, const QString &right);

    private:
        BorderSize customBorderSize;
        bool customButtonsChanged;
        bool customButtons;
        QString customTitleButtonsLeft;
        QString customTitleButtonsRight;
    };

class KDecorationPreviewPlugins
    : public KDecorationPlugins
    {
    public:
        KDecorationPreviewPlugins(const KSharedConfigPtr &cfg);
        virtual bool provides( Requirement );
    };

inline KDecorationPreviewPlugins::KDecorationPreviewPlugins(const KSharedConfigPtr &cfg)
    : KDecorationPlugins( cfg )
    {
    }

#endif
