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koffice/kexi/plugins/forms/widgets/kexidbimagebox.h

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/* 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;
//! @short A data-aware, editable image box.
/*! Can also act as a normal static image box.
*/
class KEXIFORMUTILS_EXPORT KexiDBImageBox :
public KexiFrame,
public KexiFormDataItemInterface,
public KexiSubwidgetInterface
{
Q_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();
//! always true
virtual bool cursorAtStart();
//! always true
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;
/*! \return original file name of image loaded from a file.
This can be later reused for displaying the image within a collection (to be implemented)
or on saving the image data back to file. */
//todo TQString originalFileName() const { return m_value.originalFileName(); }
//! Reimplemented to override behaviour of "lineWidth" property.
virtual void setLineWidth( int width );
//! Reimplemented to override behaviour of "paletteBackgroundColor"
//! and "paletteForegroundColor" properties.
virtual void setPalette( const TQPalette &pal );
//! Reimplemented to override behaviour of "paletteBackgroundColor" property.
virtual void setPaletteBackgroundColor( const TQColor & color );
//! \return true id drop down button should be visible (the default).
bool dropDownButtonVisible() const;
//! For overridden property
int lineWidth() const { return KexiFrame::lineWidth(); }
/*! Overriden to change the policy behaviour a bit:
NoFocus is returned regardless the real focus flag
if the data source is empty (see dataSource()). */
TQ_FocusPolicy focusPolicy() const;
//! \return the internal focus policy value, i.e. the one unrelated to data source presence.
TQ_FocusPolicy focusPolicyInternal() const;
/*! Sets the internal focus policy value.
"Internal" means that if there is no data source set, real policy becomes NoFocus. */
virtual void setFocusPolicy( TQ_FocusPolicy policy );
public slots:
void setPixmapId(uint id);
void setStoredPixmapId(uint id);
//! Sets the datasource to \a ds
virtual void setDataSource( const TQString &ds );
inline void setDataSourceMimeType(const TQCString &ds) { KexiFormDataItemInterface::setDataSourceMimeType(ds); }
virtual void setReadOnly(bool set);
//! Sets \a pixmapData data for this widget. If the widget has data source set,
//! the pixmap will be also placed inside of the buffer and saved later.
//todo void setPixmapData(const TQByteArray& pixmapData) { m_value.setData(pixmapData); }
/*! Sets original file name of image loaded from a file.
@see originalFileName() */
//todo void setOriginalFileName(const TQString& name) { m_value.setOriginalFileName(name); }
void setScaledContents(bool set);
void setAlignment(int alignment);
void setKeepAspectRatio(bool set);
// void updateActionsAvailability();
//! @internal
// void slotToggled( bool on );
//! \return sets dropDownButtonVisible property. @see dropDownButtonVisible()
void setDropDownButtonVisible( bool set );
//! Forces execution of "insert from file" action
void insertFromFile();
signals:
//! Used for db-aware mode. Emitted when value has been changed.
//! Actual value can be obtained using value().
// 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:
//! \return data depending on the current mode (db-aware or static)
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 );
//! Sets value \a value for a widget.
virtual void setValueInternal( const TQVariant& add, bool removeOld ) {
setValueInternal( add, removeOld, true /*loadPixmap*/ );
}
//! @internal, added \a loadPixmap option used by paste().
void setValueInternal( const TQVariant& add, bool removeOld, bool loadPixmap );
//! Updates i18n'd action strings after datasource change
void updateActionStrings();
void updatePixmap();
//! @internal
void setData(const KexiBLOBBuffer::Handle& handle);
bool popupMenuAvailable();
/*! Called by top-level form on key press event.
Used for Key_Escape to if the popup is visible,
so the key press won't be consumed to perform "cancel editing". */
virtual bool keyPressed(TQKeyEvent *ke);
//! \return real line width, i.e. for Boxed sunken or Boxed raised
//! frames returns doubled width value.
int realLineWidth() const;
//! Implemented for KexiSubwidgetInterface
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; //!< for db-aware mode
TQString m_valueMimeType; //!< for db-aware mode
// PixmapData m_value;
KexiBLOBBuffer::Handle m_data;
// TQString m_originalFileName;
KexiDropDownButton *m_chooser;
KexiImageContextMenu *m_popupMenu;
//moved KActionCollection m_actionCollection;
//moved KAction *m_insertFromFileAction, *m_saveAsAction, *m_cutAction, *m_copyAction, *m_pasteAction,
// *m_deleteAction, *m_propertiesAction;
// TQTimer m_clickTimer;
int m_alignment;
TQ_FocusPolicy m_focusPolicyInternal; //!< Used for 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; //!< used to disable paintEvent()
bool m_dropDownButtonVisible : 1;
bool m_insideSetPalette : 1;
};
#endif