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+//----------------------------------------------------------------------------
+//    filename             : tdemdichildfrm.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
+//    patches              : */2000        Lars Beikirch (Lars.Beikirch@gmx.net)
+//
+//    copyright            : (C) 1999-2003 by Falk Brettschneider
+//                                         and
+//                                         Szymon Stefanek (stefanek@tin.it)
+//    email                :  falkbr@tdevelop.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_H_
+#define _KMDI_CHILD_FRM_H_
+
+#include <tqptrlist.h>
+#include <tqpixmap.h>
+#include <tqpushbutton.h>
+#include <tqlabel.h>
+#include <tqdatetime.h>
+#include <tqlayout.h>
+
+#include <tqdict.h>
+
+#include "tdemdichildfrmcaption.h"
+
+class KMdiChildArea;
+class KMdiChildView;
+class TQPopupMenu;
+class TQToolButton;
+
+//==============================================================================
+/**
+  * @short Internal class, only used on Win32.
+  * This class provides a label widget that can process mouse click events.
+  */
+class KMDI_EXPORT KMdiWin32IconButton : public TQLabel
+{
+	Q_OBJECT
+public:
+	KMdiWin32IconButton( TQWidget* parent, const char* name = 0 );
+	virtual void mousePressEvent( TQMouseEvent* );
+
+signals:
+	void pressed();
+};
+
+//==============================================================================
+/* some special events, see tdemdidefines.h
+*/ 
+//------------------------------------------------------------------------------
+/**
+ * @short a TQCustomEvent for move
+ * This special event will be useful, to inform view about child frame event.
+ */
+class KMDI_EXPORT KMdiChildFrmMoveEvent : public TQCustomEvent
+{
+public:
+	KMdiChildFrmMoveEvent( TQMoveEvent *e ) : TQCustomEvent( TQEvent::Type( TQEvent::User + int( KMdi::EV_Move ) ), e ) {}
+
+};
+
+//------------------------------------------------------------------------------
+/**
+ * @short a TQCustomEvent for begin of dragging
+ * This special event will be useful, to inform view about child frame event.
+ */
+class KMDI_EXPORT KMdiChildFrmDragBeginEvent : public TQCustomEvent
+{
+public:
+	KMdiChildFrmDragBeginEvent( TQMouseEvent *e ) : TQCustomEvent( TQEvent::Type( TQEvent::User + int( KMdi::EV_DragBegin ) ), e ) {}
+};
+
+//------------------------------------------------------------------------------
+/**
+ * @short a TQCustomEvent for end of dragging
+ * This special event will be useful, to inform view about child frame event.
+ */
+class KMDI_EXPORT KMdiChildFrmDragEndEvent : public TQCustomEvent
+{
+public:
+	KMdiChildFrmDragEndEvent( TQMouseEvent *e ) : TQCustomEvent( TQEvent::Type( TQEvent::User + int( KMdi::EV_DragEnd ) ), e ) {}
+};
+
+//------------------------------------------------------------------------------
+/**
+ * @short a TQCustomEvent for begin of resizing
+ * This special event will be useful, to inform view about child frame event.
+ */
+class KMDI_EXPORT KMdiChildFrmResizeBeginEvent : public TQCustomEvent
+{
+public:
+	KMdiChildFrmResizeBeginEvent( TQMouseEvent *e ) : TQCustomEvent( TQEvent::Type( TQEvent::User + int( KMdi::EV_ResizeBegin ) ), e ) {}
+};
+
+//------------------------------------------------------------------------------
+/**
+ * @short a TQCustomEvent for end of resizing
+ * This special event will be useful, to inform view about child frame event.
+ */
+class KMDI_EXPORT KMdiChildFrmResizeEndEvent : public TQCustomEvent
+{
+public:
+	KMdiChildFrmResizeEndEvent( TQMouseEvent *e ) : TQCustomEvent( TQEvent::Type( TQEvent::User + int( KMdi::EV_ResizeEnd ) ), e ) {}
+};
+
+
+class KMdiChildFrmPrivate;
+//==============================================================================
+/**
+  * @short Internal class.
+  * It's an MDI child frame widget. It contains a view widget and a frame caption. Usually you derive from its view.
+  */ 
+//------------------------------------------------------------------------------
+class KMDI_EXPORT KMdiChildFrm : public TQFrame
+{
+	friend class KMdiChildArea;
+	friend class KMdiChildFrmCaption;
+
+	Q_OBJECT
+
+	// attributes
+public:
+	enum MdiWindowState { Normal, Maximized, Minimized };
+	//positions same in h and cpp for fast order check
+	KMdiChildView* m_pClient;
+
+protected:
+	KMdiChildArea* m_pManager;
+	KMdiChildFrmCaption* m_pCaption;
+	KMdiWin32IconButton* m_pWinIcon;
+	TQToolButton* m_pUnixIcon;
+	TQToolButton* m_pMinimize;
+	TQToolButton* m_pMaximize;
+	TQToolButton* m_pClose;
+	TQToolButton* m_pUndock;
+	MdiWindowState m_state;
+	TQRect m_restoredRect;
+	int m_iResizeCorner;
+	int m_iLastCursorCorner;
+	bool m_bResizing;
+	bool m_bDragging;
+	TQPixmap* m_pIconButtonPixmap;
+	TQPixmap* m_pMinButtonPixmap;
+	TQPixmap* m_pMaxButtonPixmap;
+	TQPixmap* m_pRestoreButtonPixmap;
+	TQPixmap* m_pCloseButtonPixmap;
+	TQPixmap* m_pUndockButtonPixmap;
+	
+	/**
+	* Every child frame window has an temporary ID in the Window menu of the child area.
+	*/
+	int m_windowMenuID;
+	
+	/**
+	* Imitates a system menu for child frame windows
+	*/
+	TQPopupMenu* m_pSystemMenu;
+	
+	TQSize m_oldClientMinSize;
+	TQSize m_oldClientMaxSize;
+	TQLayout::ResizeMode m_oldLayoutResizeMode;
+	TQTime m_timeMeasure;
+
+	// methods
+public:
+	
+	/**
+	 * Creates a new KMdiChildFrm class.
+	 */
+	KMdiChildFrm( KMdiChildArea *parent );
+	
+	/**
+	 * Destroys this KMdiChildFrm
+	 * If a child is still here managed (no recreation was made) it is destroyed too.
+	 */
+	~KMdiChildFrm();
+	
+	/**
+	 * Reparents the widget w to this KMdiChildFrm (if this is not already done)
+	 * Installs an event filter to catch focus events.
+	 * Resizes this mdi child in a way that the child fits perfectly in.
+	 */
+	void setClient( KMdiChildView *w, bool bAutomaticResize = false );
+	
+	/**
+	 * Reparents the client widget to 0 (desktop), moves with an offset from the original position
+	 * Removes the event filter.
+	 */
+	void unsetClient( TQPoint positionOffset = TQPoint( 0, 0 ) );
+	
+	/**
+	 * Sets the window icon pointer.
+	 */
+	void setIcon( const TQPixmap &pxm );
+	
+	/**
+	 * Returns the child frame icon.
+	 */
+	TQPixmap* icon() const;
+	
+	/**
+	 * Enables or disables the close button
+	 */
+	void enableClose( bool bEnable );
+	
+	/**
+	 * Sets the caption of this window
+	 */
+	void setCaption( const TQString& text );
+	
+	/**
+ 	 * Gets the caption of this mdi child.
+	 */
+	const TQString& caption() { return m_pCaption->m_szCaption; }
+	
+	/**
+	 * Minimizes, Maximizes, or restores the window.
+	 */
+	void setState( MdiWindowState state, bool bAnimate = true );
+	
+	/**
+	 * Returns the current state of the window
+	 */
+	inline MdiWindowState state() const { return m_state; }
+	
+	/**
+	 * Returns the inner client area of the parent of this (which is KMdiChildArea).
+	 */
+	TQRect mdiAreaContentsRect() const;
+	
+	/**
+	 * Returns the geometry that will be restored by calling restore().
+	 */
+	TQRect restoreGeometry() const;
+	
+	/**
+	 * Sets the geometry that will be restored by calling restore().
+	 */
+	void setRestoreGeometry( const TQRect& newRestGeo );
+	
+	/**
+	 * Forces updating the rects of the caption and so...
+	 * It may be useful when setting the mdiCaptionFont of the MdiManager
+	 */
+	void updateRects() { resizeEvent( 0 ); }
+	
+	/**
+	 * Returns the system menu.
+	 */
+	TQPopupMenu* systemMenu() const;
+	
+	/**
+	 * Returns the caption bar height 
+	 */
+	inline int captionHeight() const { return m_pCaption->height(); }
+	
+	/**
+	 * sets new raise behavior and pixmaps of the buttons depending on the current decoration style
+	 */
+	void redecorateButtons();
+
+	/**
+	 * returns the mouse state "In Drag"
+	 */
+	bool isInDrag() const { return m_bDragging; }
+	
+	/**
+	 * returns the mouse state "In Resize"
+	 */
+	bool isInResize() const { return m_bResizing; }
+	
+	/**
+	 * Internally called from the signal focusInEventOccurs.
+	 * It raises the MDI childframe to the top of all other MDI child frames and sets the focus on it.
+	 */
+	void raiseAndActivate();
+
+	/**
+	 * Sets the minimum size of the widget to w by h pixels.
+	 * It extends it's base clase method in a way that the minimum size of
+	 * the child area will be set additionally if the view is maximized.
+	 */
+	virtual void setMinimumSize ( int minw, int minh );
+
+public slots:
+	
+	void slot_resizeViaSystemMenu();
+
+protected:
+	
+	/**
+	 * Reimplemented from the base class.
+	 * Resizes the captionbar, relayouts the position of the system buttons,
+	 * and calls resize for its embedded KMdiChildView with the proper size
+	 */
+	virtual void resizeEvent( TQResizeEvent * );
+	
+	/**
+	 * Reimplemented from the base class.
+	 * Detects if the mouse is on the edge of window and what resize cursor must be set.
+	 * Calls KMdiChildFrm::resizeWindow if it is in m_bResizing.
+	 */
+	virtual void mouseMoveEvent( TQMouseEvent *e );
+	
+	/**
+	 * Reimplemented from the base class.
+	 * Colours the caption, raises the childfrm widget and
+	 * turns to resize mode if it is on the edge (resize-sensitive area)
+	 */
+	virtual void mousePressEvent( TQMouseEvent *e );
+	
+	/**
+	 * Reimplemented from the base class.
+	 * Sets a normal cursor and leaves the resize mode.
+	 */
+	virtual void mouseReleaseEvent( TQMouseEvent * );
+	
+	/**
+	 * Reimplemented from the base class.
+	 * give its child view the chance to notify a childframe move... that's why it sends
+	 * a KMdiChildMovedEvent to the embedded KMdiChildView .
+	 */
+	virtual void moveEvent( TQMoveEvent* me );
+	
+	/**
+	 * Reimplemented from the base class. If not in resize mode, it sets the mouse cursor to normal appearance.
+	 */
+	virtual void leaveEvent( TQEvent * );
+	
+	/** 
+	 * Reimplemented from the base class.
+	 * In addition, the following are caught
+	 * -the client's mousebutton press events which raises and activates the childframe
+	 * -the client's resize event which resizes this widget as well
+	 */
+	virtual bool eventFilter( TQObject*, TQEvent* ); 
+	
+	/**
+	 * Calculates the new geometry from the new mouse position given as parameters
+	 * and calls KMdiChildFrm::setGeometry
+	 */
+	void resizeWindow( int resizeCorner, int x, int y );
+	
+	/**
+	 * Override the cursor appearance depending on the widget corner given as parameter
+	 */
+	void setResizeCursor( int resizeCorner );
+	
+	/**
+	 * Changes from the resize cursor to the normal (previous) cursor
+	 */
+	void unsetResizeCursor();
+	
+	/**
+	 * That means to show a mini window showing the childframe's caption bar, only.
+	 * It cannot be resized.
+	 */
+	virtual void switchToMinimizeLayout();
+	
+	/**
+	 * Does the actual resize. Called from various places but from resizeEvent in general.
+	 */
+	void doResize();
+	
+	/**
+	 * Does the actual resize, like doResize() but skips resize of the client if \a captionOnly is true.
+	 * @todo: merge with doResize()
+	 */
+	void doResize( bool captionOnly );
+
+protected slots:
+	
+	/**
+	 * Handles a click on the Maximize button
+	 */
+	void maximizePressed();
+	
+	/**
+	 * Handles a click on the Restore (Normalize) button
+	 */
+	void restorePressed();
+	
+	/**
+	 * Handles a click on the Minimize button.
+	 */
+	void minimizePressed();
+	
+	/**
+	 * Handles a click on the Close button.
+	 */
+	void closePressed();
+	
+	/**
+	 * Handles a click on the Undock (Detach) button
+	 */
+	void undockPressed();
+	
+	/**
+	 * Shows a system menu for child frame windows.
+	 */
+	void showSystemMenu();
+
+protected:
+
+	/**
+	 * Restore the focus policies for _all_ widgets in the view using the list given as parameter.
+	 * Install the event filter for all direct child widgets of this. (See KMdiChildFrm::eventFilter)
+	 */
+	void linkChildren( TQDict<TQ_FocusPolicy>* pFocPolDict );
+
+	/**
+	 * Backups all focus policies of _all_ child widgets in the MDI childview since they get lost during a reparent.
+	 * Remove all event filters for all direct child widgets of this. (See KMdiChildFrm::eventFilter)
+	 */
+	TQDict<TQ_FocusPolicy>* unlinkChildren();
+	
+	/**
+	 * Calculates the corner id for the resize cursor. The return value can be tested for:
+	 * KMDI_RESIZE_LEFT, KMDI_RESIZE_RIGHT, KMDI_RESIZE_TOP, KMDI_RESIZE_BOTTOM
+	 * or an OR'd variant of them for the corners.
+	 */
+	int getResizeCorner( int ax, int ay );
+
+private:
+	KMdiChildFrmPrivate *d;
+};
+
+#endif //_KMDICHILDFRM_H_
+
+// kate: space-indent off; replace-tabs off; tab-width 4; indent-mode csands;