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/****************************************************************************
Definition of QXEmbed class
Copyright (C) 1999-2000 Troll Tech AS
This library 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 library 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 library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*****************************************************************************/
#ifndef QXEMBED_H
#define QXEMBED_H
#include <tqwidget.h>
#include <kdelibs_export.h>
#ifdef Q_WS_X11
class QXEmbedData;
/**
* A QXEmbed widget serves as an embedder that can manage one single embedded
* X-window. These so-called client windows can be arbitrary Qt or non Qt
* applications.
*
* There are two different ways of using QXEmbed,
* from the client side or from the embedder's side.
*
* Embedding from the client's side requires that the client knows the
* window identifier of the respective embedder widget. Use either
* embedClientIntoWindow() or the high-level wrapper processClientCmdline().
* This is only possible when the client is a Qt application.
*
* When using it from the embedder's side, you must know the window
* identifier of the window that should be embedded. Simply call embed()
* with this identifier as parameter. If the client is a Qt application,
* make sure it has called QXEmbed::initialize(). Otherwise you should
* probably call setProtocol(XPLAIN) before embed().
*
* Reimplement the change handler windowChanged() to catch embedding or
* the destruction of embedded windows. In the latter case, the
* embedder also emits a signal embeddedWindowDestroyed() for
* convenience.
*
* @short The QXEmbed widget is a graphical socket that can embed an external X-Window.
*/
class KDEUI_EXPORT QXEmbed : public QWidget
{
Q_OBJECT
public:
/**
*
* Constructs a xembed widget.
*
* The parent, name and f arguments are passed to the QFrame
* constructor.
*/
QXEmbed( TQWidget *parent=0, const char *name=0, WFlags f = 0 );
/**
* Destructor. Cleans up the focus if necessary.
*/
~QXEmbed();
/**
* Embedded applications should call this function to make sure
* they support the XEMBED protocol. It is called automatically
* when you use embedClientIntoWindow() or
* processClientCmdline(). Clients might have to call it
* manually when you use embed().
*/
static void initialize();
enum Protocol { XEMBED, XPLAIN };
/**
* Sets the protocol used for embedding windows.
* This function must be called before embedding a window.
* Protocol XEMBED provides maximal functionality (focus, tabs, etc)
* but requires explicit cooperation from the embedded window.
* Protocol XPLAIN provides maximal compatibility with
* embedded applications that do not support the XEMBED protocol.
* The default is XEMBED.
*
* Non KDE applications should be embedded with protocol XPLAIN.
* This does not happen automatically yet.
* You must call setProtocol() explicitly.
*/
void setProtocol( Protocol proto );
/**
* Returns the protocol used for embedding the current window.
*
* @return the protocol used by QXEmbed.
*/
Protocol protocol();
/**
* Embeds the window with the identifier w into this xembed widget.
*
* This function is useful if the embedder knows about the client window
* that should be embedded. Often it is vice versa: the client knows
* about its target embedder. In that case, it is not necessary to call
* embed(). Instead, the client will call the static function
* embedClientIntoWindow().
*
* @param w the identifier of the window to embed
* @see embeddedWinId()
*/
void embed( WId w );
/**
* Returns the window identifier of the embedded window, or 0 if no
* window is embedded yet.
*
* @return the id of the embedded window (0 if no window is embedded)
*/
WId embeddedWinId() const;
/**
* A function for clients that embed themselves. The widget
* client will be embedded in the window window. The application has
* to ensure that window is the handle of the window identifier of
* an QXEmbed widget.
*
* @short #processClientCmdline()
*/
static void embedClientIntoWindow( TQWidget* client, WId window );
/**
* A utility function for clients that embed theirselves. The widget
* client will be embedded in the window that is passed as
* -embed command line argument.
*
* The function returns true on success or false if no such command line
* parameter is specified.
*
* @see embedClientIntoWindow()
*/
static bool processClientCmdline( TQWidget* client, int& argc, char ** argv );
/**
* Sends a WM_DELETE_WINDOW message to the embedded window. This is what
* typically happens when you click on the close button of a window
* manager decoration. This should cause the embedded application to
* cleanly close the window. Signal embeddedWindowDestroyed() can be used
* to monitor the status of the embedded window.
*/
void sendDelete( void );
/**
* Selects what shoud be done with the embedded window when the embedding
* window is destroyed. When the argument is true, the embedded window is
* kept alive, is hidden, and receives a WM_DELETE_WINDOW message using
* sendDelete(). This is the default. Otherwise, the destruction of the
* QXEmbed object simply destroys the embedded window.
*
* @see sendDelete()
*/
void setAutoDelete( bool );
/**
* Returns the value of flag indicating what shoud be done with the
* embedded window when the embedding window is destroyed.
*
* @see setAutoDelete()
*/
bool autoDelete() const;
/* Reimp */
TQSize sizeHint() const;
TQSize minimumSizeHint() const;
TQSizePolicy sizePolicy() const;
bool eventFilter( TQObject *, TQEvent * );
bool customWhatsThis() const;
void enterWhatsThisMode(); // temporary, fix in Qt (Matthias, Mon Jul 17 15:20:55 CEST 2000 )
virtual void reparent( TQWidget * parent, WFlags f, const TQPoint & p, bool showIt = false );
/**
* @internal
*/
void updateEmbeddedFocus( bool hasfocus );
signals:
/**
* This signal is emitted when the embedded window has been lost (destroyed or reparented away)
*
* @see embeddedWinId()
*/
// KDE4 rename to embeddedWindowLost()
void embeddedWindowDestroyed();
protected:
bool event( TQEvent * );
void keyPressEvent( TQKeyEvent * );
void keyReleaseEvent( TQKeyEvent * );
void focusInEvent( TQFocusEvent * );
void focusOutEvent( TQFocusEvent * );
void resizeEvent(TQResizeEvent *);
void showEvent( TQShowEvent * );
bool x11Event( XEvent* );
/**
* A change handler that indicates that the embedded window has been
* changed. The window handle can also be retrieved with
* embeddedWinId().
*
* @param w the handle of the window that changed
*/
virtual void windowChanged( WId w );
bool focusNextPrevChild( bool next );
private:
WId window;
QXEmbedData* d;
void checkGrab();
void sendSyntheticConfigureNotifyEvent();
void handleEmbed();
};
#endif
#endif
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