tdelibs/kmdi/kmdichildfrmcaption.h

//----------------------------------------------------------------------------
//    filename             : kmdichildfrmcaption.h
//----------------------------------------------------------------------------
//    Project              : KDE MDI extension
//
//    begin                : 07/1999       by Szymon Stefanek as part of kvirc
//                                         (an IRC application)
//    changes              : 09/1999       by Falk Brettschneider to create an
//                           - 06/2000     stand-alone Qt extension set of
//                                         classes and a Qt-based library
//                           2000-2003     maintained by the KDevelop project
//
//    copyright            : (C) 1999-2003 by Falk Brettschneider
//                                         and
//                                         Szymon Stefanek (stefanek@tin.it)
//    email                :  falkbr@kdevelop.org (Falk Brettschneider)
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
//
//    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.
//
//----------------------------------------------------------------------------
#ifndef _KMDI_CHILD_FRM_CAPTION_H_
#define _KMDI_CHILD_FRM_CAPTION_H_

#include <tqwidget.h>

#include "kmdidefines.h"

class KMdiChildFrm;


class KMdiChildFrmCaptionPrivate;

/**
* @short Internal class.
*
* It's the caption bar of a child frame widget.
*/
class KMDI_EXPORT KMdiChildFrmCaption : public TQWidget
{
	Q_OBJECT
public:
	/**
	 * Constructor
	 */
	KMdiChildFrmCaption( KMdiChildFrm *parent );

	/**
	 * Destructor
	 */
	~KMdiChildFrmCaption();

	/**
	 * Repaint the caption bar in active background colors
	 */
	void setActive( bool bActive );

	/**
	 * Repaint with a new caption bar title
	 */
	void setCaption( const TQString& text );

	/**
	 * Returns the caption bar height depending on the used font
	 */
	int heightHint();

public slots:
	/**
	 * Grabs the mouse, a move cursor, sets a move indicator variable to true and keeps the global mouse position in mind
	 */
	void slot_moveViaSystemMenu();

protected:
	/**
	 * Draws the caption bar and its title using the settings
	 */
	virtual void paintEvent( TQPaintEvent *e );

	/**
	 * The same as KMdiChildFrmCaption::slot_moveViaSystemMenu
	 */
	virtual void mousePressEvent( TQMouseEvent * );

	/**
	 * Calls maximizePressed of the parent widget ( KMdiChildFrm )
	 */
	virtual void mouseDoubleClickEvent( TQMouseEvent * );

	/**
	 * Restore the normal mouse cursor, set the state variable back to 'not moving'
	 */
	virtual void mouseReleaseEvent( TQMouseEvent * );

	/**
	 * Checks if out of move range of the KMdiChildArea and calls KMdiChildFrm::move
	 */
	virtual void mouseMoveEvent( TQMouseEvent *e );

	/**
	 * Computes a new abbreviated string from a given string depending on a given maximum width
	 * @todo Replace with a call to a KStringHandler function instead of rolling our own
	 */
	TQString abbreviateText( TQString origStr, int maxWidth );

	// attributes
public:
	/**
	 * the title string shown in the caption bar
	 */
	TQString m_szCaption;

protected:  // Protected attributes
	/**
	 * parent widget
	 */
	KMdiChildFrm *m_pParent;

	/**
	 * state variable indicating whether activated or not activated
	 */
	bool m_bActive;

	/**
	 * the position offset related to its parent widget (internally used for translating mouse move positions
	 */
	TQPoint m_offset;

	/**
	 * True if the child knows that it is currently being dragged.
	 */
	bool m_bChildInDrag;

private:
	KMdiChildFrmCaptionPrivate *d;
};

#endif //_KMDICAPTION_H_

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