kexidbimagebox.h

/* This file is part of the KDE project
   Copyright (C) 2005 Cedric Pasteur <cedric.pasteur@free.fr>
   Copyright (C) 2004-2007 Jaroslaw Staniek <js@iidea.pl>
 
   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library 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
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with this program; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/
 
#ifndef KexiDBImageBox_H
#define KexiDBImageBox_H
 
#include "kexiformdataiteminterface.h"
#include "kexiframe.h"
#include "kexidbutils.h"
#include <kexiblobbuffer.h>
 
class KexiDropDownButton;
class KexiImageContextMenu;


class KEXIFORMUTILS_EXPORT KexiDBImageBox : 
    public KexiFrame, 
    public KexiFormDataItemInterface, 
    public KexiSubwidgetInterface
{
    TQ_OBJECT
    
    TQ_PROPERTY( TQString dataSource READ dataSource WRITE setDataSource )
    TQ_PROPERTY( TQCString dataSourceMimeType READ dataSourceMimeType WRITE setDataSourceMimeType )
    TQ_PROPERTY( bool readOnly READ isReadOnly WRITE setReadOnly )
//  TQ_PROPERTY( TQPixmap pixmap READ pixmap WRITE setPixmap )
//  TQ_PROPERTY( TQByteArray pixmapData READ pixmapData WRITE setPixmapData )
    TQ_PROPERTY( uint pixmapId READ pixmapId WRITE setPixmapId DESIGNABLE true STORED false )
    TQ_PROPERTY( uint storedPixmapId READ storedPixmapId WRITE setStoredPixmapId DESIGNABLE false STORED true )
    TQ_PROPERTY( bool scaledContents READ hasScaledContents WRITE setScaledContents )
    TQ_PROPERTY( bool keepAspectRatio READ keepAspectRatio WRITE setKeepAspectRatio )
    TQ_PROPERTY( int alignment READ alignment WRITE setAlignment )
//  TQ_PROPERTY( TQString originalFileName READ originalFileName WRITE setOriginalFileName DESIGNABLE false )
//  TQ_OVERRIDE( FocusPolicy focusPolicy READ focusPolicy WRITE setFocusPolicy )
    TQ_PROPERTY( bool dropDownButtonVisible READ dropDownButtonVisible WRITE setDropDownButtonVisible )
    TQ_OVERRIDE( int lineWidth READ lineWidth WRITE setLineWidth )
    TQ_OVERRIDE( FocusPolicy focusPolicy READ focusPolicyInternal WRITE setFocusPolicy )
 
    public:
        KexiDBImageBox( bool designMode, TQWidget *parent, const char *name = 0 );
        virtual ~KexiDBImageBox();
 
        inline TQString dataSource() const { return KexiFormDataItemInterface::dataSource(); }
        inline TQCString dataSourceMimeType() const { return KexiFormDataItemInterface::dataSourceMimeType(); }
 
        virtual TQVariant value(); // { return m_value.data(); }
 
//      TQByteArray pixmapData() const { return m_value.data(); }
 
        TQPixmap pixmap() const;
 
        uint pixmapId() const;
 
        uint storedPixmapId() const;
// 
        virtual void setInvalidState( const TQString& displayText );
 
        virtual bool valueIsNull();
 
        virtual bool valueIsEmpty();
 
        virtual TQWidget* widget();

        virtual bool cursorAtStart();

        virtual bool cursorAtEnd();
 
//      //! used to catch setIndent(), etc.
//      virtual bool setProperty ( const char * name, const TQVariant & value );
 
        virtual bool isReadOnly() const;
 
        bool hasScaledContents() const;
 
//      bool designMode() const { return m_designMode; }
 
        int alignment() const { return m_alignment; }
 
        bool keepAspectRatio() const { return m_keepAspectRatio; }
 
        virtual TQSize sizeHint() const;
 
        KexiImageContextMenu *contextMenu() const;

//todo      TQString originalFileName() const { return m_value.originalFileName(); }

        virtual void setLineWidth( int width );

        virtual void setPalette( const TQPalette &pal );

        virtual void setPaletteBackgroundColor( const TQColor & color );

        bool dropDownButtonVisible() const;

        int lineWidth() const { return KexiFrame::lineWidth(); }

        TQWidget::FocusPolicy focusPolicy() const;

        TQWidget::FocusPolicy focusPolicyInternal() const;

        virtual void setFocusPolicy( TQWidget::FocusPolicy policy );
 
    public slots:
        void setPixmapId(uint id);
 
        void setStoredPixmapId(uint id);

        virtual void setDataSource( const TQString &ds );
 
        inline void setDataSourceMimeType(const TQCString &ds) { KexiFormDataItemInterface::setDataSourceMimeType(ds); }
 
        virtual void setReadOnly(bool set);

//todo      void setPixmapData(const TQByteArray& pixmapData) { m_value.setData(pixmapData); }

//todo      void setOriginalFileName(const TQString& name) { m_value.setOriginalFileName(name); }
 
        void setScaledContents(bool set);
 
        void setAlignment(int alignment);
 
        void setKeepAspectRatio(bool set);
 
//      void updateActionsAvailability();

//      void slotToggled( bool on );

        void setDropDownButtonVisible( bool set );

        void insertFromFile();
 
    signals:
//      virtual void pixmapChanged();
//      virtual void valueChanged(const TQByteArray& data);
 
        void idChanged(long id);
 
    protected slots:
        void slotUpdateActionsAvailabilityRequested(bool& valueIsNull, bool& valueIsReadOnly);
 
        void handleInsertFromFileAction(const KURL& url);
        void handleAboutToSaveAsAction(TQString& origFilename, TQString& fileExtension, bool& dataIsEmpty);
        void handleSaveAsAction(const TQString& fileName);
        void handleCutAction();
        void handleCopyAction();
        void handlePasteAction();
        virtual void clear();
        void handleShowPropertiesAction();
 
    protected:
        TQByteArray data() const;
    
        virtual void contextMenuEvent ( TQContextMenuEvent * e );
//      virtual void mousePressEvent( TQMouseEvent *e );
        virtual void setColumnInfo(KexiDB::QueryColumnInfo* cinfo);
        virtual void paintEvent( TQPaintEvent* );
        virtual void resizeEvent( TQResizeEvent* e );
        virtual bool eventFilter( TQObject * watched, TQEvent * e );

        virtual void setValueInternal( const TQVariant& add, bool removeOld ) {
            setValueInternal( add, removeOld, true /*loadPixmap*/ );
        }

        void setValueInternal( const TQVariant& add, bool removeOld, bool loadPixmap );

        void updateActionStrings();
        void updatePixmap();

        void setData(const KexiBLOBBuffer::Handle& handle);
 
        bool popupMenuAvailable();

        virtual bool keyPressed(TQKeyEvent *ke);

        int realLineWidth() const;

        virtual bool subwidgetStretchRequired(KexiDBAutoField* autoField) const;
 
//      virtual void drawContents ( TQPainter *p );
 
//      virtual void fontChange( const TQFont& font );
//      virtual void styleChange( TQStyle& style );
//      virtual void enabledChange( bool enabled );
 
//      virtual void paletteChange( const TQPalette& pal );
//      virtual void frameChanged();
//      virtual void showEvent( TQShowEvent* e );
 
//      void updatePixmapLater();
//      class ImageLabel;
//      ImageLabel *m_pixmapLabel;
        TQPixmap m_pixmap;
        TQByteArray m_value; 
        TQString m_valueMimeType; 
//      PixmapData m_value;
        KexiBLOBBuffer::Handle m_data;
//      TQString m_originalFileName;
        KexiDropDownButton *m_chooser;
        KexiImageContextMenu *m_popupMenu;
//moved     TDEActionCollection m_actionCollection;
//moved     TDEAction *m_insertFromFileAction, *m_saveAsAction, *m_cutAction, *m_copyAction, *m_pasteAction,
//          *m_deleteAction, *m_propertiesAction;
//      TQTimer m_clickTimer;
        int m_alignment;
        TQWidget::FocusPolicy m_focusPolicyInternal; 
        bool m_designMode : 1;
        bool m_readOnly : 1;
        bool m_scaledContents : 1;
        bool m_keepAspectRatio : 1;
        bool m_insideSetData : 1;
        bool m_setFocusOnButtonAfterClosingPopup : 1;
        bool m_lineWidthChanged : 1;
        bool m_paletteBackgroundColorChanged : 1;
        bool m_paintEventEnabled : 1; 
        bool m_dropDownButtonVisible : 1;
        bool m_insideSetPalette : 1;
};
 
#endif