#include "qwextend.h"

#ifdef HAVE_X11

#define protected public
#define private public
#include <QWidget>
#undef protected
#undef private

#include <QCursor>
#include <QObject>
#include <QPixmap>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

// taken from qt/x11 (doing this sucks sucks sucks sucks sucks)
void reparent_good(QWidget *that, Qt::WindowFlags f, bool showIt)
{
	extern void qPRCreate( const QWidget *, Window );
	extern void qt_XDestroyWindow( const QWidget *destroyer, Display *display, Window window );
	extern bool qt_dnd_enable( QWidget* w, bool on );

	QWidget *parent = 0;
	Display *dpy = that->x11Display();
	QCursor oldcurs;
	bool setcurs = that->windowState(Qt::WState_OwnCursor);
	if ( setcurs ) {
	oldcurs = that->cursor();
	that->unsetCursor();
	}

	// dnd unregister (we will register again below)
	bool accept_drops = that->acceptDrops();
	that->setAcceptDrops( false );

	// clear mouse tracking, re-enabled below
	bool mouse_tracking = that->hasMouseTracking();
	that->clearWState(Qt::WState_MouseTracking);

	QWidget* oldtlw = that->window();
	QWidget *oldparent = that->parentWidget();
	WId old_winid = that->winid;
	if ( that->windowFlags(Qt::WType_Desktop) )
	old_winid = 0;
	that->setWinId( 0 );

	// hide and reparent our own window away. Otherwise we might get
	// destroyed when emitting the child remove event below. See QWorkspace.
	XUnmapWindow( that->x11Display(), old_winid );
	XReparentWindow( that->x11Display(), old_winid,
			 RootWindow( that->x11Display(), that->x11Screen() ), 0, 0 );

	if ( that->isTopLevel() ) {
		// input contexts are associated with toplevel widgets, so we need
		// destroy the context here.  if we are reparenting back to toplevel,
		// then we will have another context created, otherwise we will
		// use our new toplevel's context
		that->destroyInputContext();
	}

	if ( that->isTopLevel() || !parent ) // we are toplevel, or reparenting to toplevel
		that->topData()->parentWinId = 0;

	if ( parent != that->parentObj ) {
	if ( that->parentObj )				// remove from parent
		that->parentObj->removeChild( that );
	if ( parent )				// insert into new parent
		parent->insertChild( that );
	}
	bool     enable = that->isEnabled();		// remember status
	Qt::FocusPolicy fp = that->focusPolicy();
	QSize    s	    = that->size();
	QPixmap *bgp    = (QPixmap *)that->backgroundPixmap();
	QColor   bgc    = that->bg_col;			// save colors
	QString capt= that->caption();
	that->widget_flags = f;
	that->clearWState( Qt::WState_Created | Qt::WState_Visible | Qt::WState_ForceHide );
	that->create();
	if ( that->isTopLevel() || (!parent || parent->isVisible() ) )
	that->setWState( Qt::WState_ForceHide );	// new widgets do not show up in already visible parents

	const QObjectList *chlist = that->children();
	if ( chlist ) {				// reparent children
	QObjectListIt it( *chlist );
	QObject *obj;
	while ( (obj=it.current()) ) {
		if ( obj->isWidgetType() ) {
		QWidget *w = (QWidget *)obj;
		if ( !w->isTopLevel() ) {
			XReparentWindow( that->x11Display(), w->winId(), that->winId(),
					 w->geometry().x(), w->geometry().y() );
		} else if ( w->isPopup()
				|| w->windowFlags(Qt::WStyle_DialogBorder)
				|| w->windowFlags(Qt::WType_Dialog)
				|| w->windowFlags(Qt::WStyle_Tool) ) {
			XSetTransientForHint( that->x11Display(), w->winId(), that->winId() );
		}
		}
		++it;
	}
	}
	qPRCreate( that, old_winid );
	if ( bgp )
	XSetWindowBackgroundPixmap( dpy, that->winid, bgp->handle() );
	else
	XSetWindowBackground( dpy, that->winid, bgc.pixel(that->x11Screen()) );

	// all this just to do a stupid resize instead of setGeometry
	//setGeometry( p.x(), p.y(), s.width(), s.height() );
	that->resize(s.width(), s.height());

	that->setEnabled( enable );
	that->setFocusPolicy( fp );
	if ( !capt.isNull() ) {
	that->extra->topextra->caption = QString::null;
	that->setWindowTitle( capt );
	}
	if ( showIt )
	that->show();
	if ( old_winid )
	qt_XDestroyWindow( that, dpy, old_winid );
	if ( setcurs )
	that->setCursor(oldcurs);

	that->reparentFocusWidgets( oldtlw );

	// re-register dnd
	if (oldparent)
	oldparent->checkChildrenDnd();

	if ( accept_drops )
	that->setAcceptDrops( true );
	else {
	that->checkChildrenDnd();
	that->topData()->dnd = 0;
	qt_dnd_enable(that, (that->extra && that->extra->children_use_dnd));
	}

	// re-enable mouse tracking
	if (mouse_tracking)
	that->setMouseTracking(mouse_tracking);
}

#endif
