actiondnd.cpp

Linux下的基于X11的图形开发环境。

    if ( e->button() == LeftButton &&
	 MainWindow::self->currentTool() != POINTER_TOOL &&
	 MainWindow::self->currentTool() != ORDER_TOOL ) {

	if ( MainWindow::self->currentTool() == CONNECT_TOOL ) {

	} else {
	    widgetInserting = TRUE;
	}

	return;
    }


    dragStartPos = e->pos();
}

void QDesignerToolBar::removeWidget( QWidget *w )
{
    QMap<QWidget*, QAction*>::Iterator it = actionMap.find( w );
    if ( it == actionMap.end() )
	return;
    QAction *a = *it;
    int index = actionList.find( a );
    RemoveActionFromToolBarCommand *cmd =
	new RemoveActionFromToolBarCommand( tr( "Delete Action '%1' from Toolbar '%2'" ).
					    arg( a->name() ).arg( caption() ),
					    formWindow, a, this, index );
    formWindow->commandHistory()->addCommand( cmd );
    cmd->execute();
    QApplication::sendPostedEvents();
    adjustSize();
}

void QDesignerToolBar::buttonMouseMoveEvent( QMouseEvent *e, QObject *o )
{
    if ( widgetInserting || ( e->state() & LeftButton ) == 0 )
	return;
    if ( QABS( QPoint( dragStartPos - e->pos() ).manhattanLength() ) < QApplication::startDragDistance() )
	return;
    QMap<QWidget*, QAction*>::Iterator it = actionMap.find( (QWidget*)o );
    if ( it == actionMap.end() )
	return;
    QAction *a = *it;
    if ( !a )
	return;
    int index = actionList.find( a );
    RemoveActionFromToolBarCommand *cmd =
	new RemoveActionFromToolBarCommand( tr( "Delete Action '%1' from Toolbar '%2'" ).
					    arg( a->name() ).arg( caption() ),
					    formWindow, a, this, index );
    formWindow->commandHistory()->addCommand( cmd );
    cmd->execute();
    QApplication::sendPostedEvents();
    adjustSize();

    QString type = a->inherits( "QActionGroup" ) ? QString( "application/x-designer-actiongroup" ) :
	a->inherits( "QSeparatorAction" ) ? QString( "application/x-designer-separator" ) : QString( "application/x-designer-actions" );
    QStoredDrag *drag = new QStoredDrag( type, this );
    QString s = QString::number( (long)a ); // #### huha, that is evil
    drag->setEncodedData( QCString( s.latin1() ) );
    drag->setPixmap( a->iconSet().pixmap() );
    if ( a->inherits( "QDesignerAction" ) ) {
	if ( formWindow->widgets()->find( ( (QDesignerAction*)a )->widget() ) )
	    formWindow->selectWidget( ( (QDesignerAction*)a )->widget(), FALSE );
    }
    if ( !drag->drag() ) {
	AddActionToToolBarCommand *cmd = new AddActionToToolBarCommand( tr( "Add Action '%1' to Toolbar '%2'" ).
									arg( a->name() ).arg( caption() ),
									formWindow, a, this, index );
	formWindow->commandHistory()->addCommand( cmd );
	cmd->execute();
    }
    lastIndicatorPos = QPoint( -1, -1 );
    indicator->hide();
}

#ifndef QT_NO_DRAGANDDROP

void QDesignerToolBar::dragEnterEvent( QDragEnterEvent *e )
{
    widgetInserting = FALSE;
    lastIndicatorPos = QPoint( -1, -1 );
    if ( e->provides( "application/x-designer-actions" ) ||
	 e->provides( "application/x-designer-actiongroup" ) ||
	 e->provides( "application/x-designer-separator" ) )
	e->accept();
}

void QDesignerToolBar::dragMoveEvent( QDragMoveEvent *e )
{
    if ( e->provides( "application/x-designer-actions" ) ||
	 e->provides( "application/x-designer-actiongroup" ) ||
	 e->provides( "application/x-designer-separator" ) )
	e->accept();
    else
	return;
    drawIndicator( calcIndicatorPos( e->pos() ) );
}

void QDesignerToolBar::dragLeaveEvent( QDragLeaveEvent * )
{
    indicator->hide();
    insertAnchor = 0;
    afterAnchor = TRUE;
}

void QDesignerToolBar::dropEvent( QDropEvent *e )
{
    if ( e->provides( "application/x-designer-actions" ) ||
	 e->provides( "application/x-designer-actiongroup" ) ||
	 e->provides( "application/x-designer-separator" ) )
	e->accept();
    else
	return;
    QString s;
    if ( e->provides( "application/x-designer-actiongroup" ) )
	s = QString( e->encodedData( "application/x-designer-actiongroup" ) );
    else if ( e->provides( "application/x-designer-separator" ) )
	s = QString( e->encodedData( "application/x-designer-separator" ) );
    else
	s = QString( e->encodedData( "application/x-designer-actions" ) );

    indicator->hide();
    QAction *a = 0;
    int index = actionList.findRef( *actionMap.find( insertAnchor ) );
    if ( index != -1 && afterAnchor )
	++index;
    if ( !insertAnchor )
	index = 0;
    if ( e->provides( "application/x-designer-actions" ) ||
	 e->provides( "application/x-designer-separator" ) ) {
	if ( e->provides( "application/x-designer-actions" ) )
	    a = (QDesignerAction*)s.toLong();
	else
	    a = (QSeparatorAction*)s.toLong();
    } else {
	a = (QDesignerActionGroup*)s.toLong();
    }

    if ( actionList.findRef( a ) != -1 ) {
	QMessageBox::warning( MainWindow::self, tr( "Insert/Move Action" ),
			      tr( "Action '%1' has already been added to this toolbar.\n"
				  "An Action may only occur once in a given toolbar." ).
			      arg( a->name() ) );
	return;
    }

    AddActionToToolBarCommand *cmd = new AddActionToToolBarCommand( tr( "Add Action '%1' to Toolbar '%2'" ).
								    arg( a->name() ).arg( caption() ),
								    formWindow, a, this, index );
    formWindow->commandHistory()->addCommand( cmd );
    cmd->execute();

    lastIndicatorPos = QPoint( -1, -1 );
}

#endif

void QDesignerToolBar::reInsert()
{
    QAction *a = 0;
    actionMap.clear();
    clear();
    for ( a = actionList.first(); a; a = actionList.next() ) {
	a->addTo( this );
	if ( a->inherits( "QActionGroup" ) ) {
	    actionMap.insert( ( (QDesignerActionGroup*)a )->widget(), a );
	    if ( ( (QDesignerActionGroup*)a )->widget() )
		( (QDesignerActionGroup*)a )->widget()->installEventFilter( this );
	} else if ( a->inherits( "QDesignerAction" ) ) {
	    actionMap.insert( ( (QDesignerAction*)a )->widget(), a );
	    ( (QDesignerAction*)a )->widget()->installEventFilter( this );
	} else if ( a->inherits( "QSeparatorAction" ) ) {
	    actionMap.insert( ( (QSeparatorAction*)a )->widget(), a );
	    ( (QSeparatorAction*)a )->widget()->installEventFilter( this );
	}
    }
    QApplication::sendPostedEvents();
    adjustSize();
}

void QDesignerToolBar::actionRemoved()
{
    actionList.removeRef( (QAction*)sender() );
}

QPoint QDesignerToolBar::calcIndicatorPos( const QPoint &pos )
{
    if ( orientation() == Horizontal ) {
	QPoint pnt( width() - 2, 0 );
	insertAnchor = 0;
	afterAnchor = TRUE;
	if ( !children() )
	    return pnt;
	pnt = QPoint( 13, 0 );
	QObjectListIt it( *children() );
	QObject * obj;
	while( (obj=it.current()) != 0 ) {
	    ++it;
	    if ( obj->isWidgetType() &&
		 qstrcmp( "qt_dockwidget_internal", obj->name() ) != 0 ) {
		QWidget *w = (QWidget*)obj;
		if ( w->x() < pos.x() ) {
		    pnt.setX( w->x() + w->width() + 1 );
		    insertAnchor = w;
		    afterAnchor = TRUE;
		}
	    }
	}
	return pnt;
    } else {
	QPoint pnt( 0, height() - 2 );
	insertAnchor = 0;
	afterAnchor = TRUE;
	if ( !children() )
	    return pnt;
	pnt = QPoint( 0, 13 );
	QObjectListIt it( *children() );
	QObject * obj;
	while( (obj=it.current()) != 0 ) {
	    ++it;
	    if ( obj->isWidgetType() &&
		 qstrcmp( "qt_dockwidget_internal", obj->name() ) != 0 ) {
		QWidget *w = (QWidget*)obj;
		if ( w->y() < pos.y() ) {
		    pnt.setY( w->y() + w->height() + 1 );
		    insertAnchor = w;
		    afterAnchor = TRUE;
		}
	    }
	}
	return pnt;
    }
}

void QDesignerToolBar::drawIndicator( const QPoint &pos )
{
    if ( lastIndicatorPos == pos )
	return;
    bool wasVsisible = indicator->isVisible();
    if ( orientation() == Horizontal ) {
	indicator->resize( 3, height() );
	if ( pos != QPoint( -1, -1 ) )
	     indicator->move( pos.x() - 1, 0 );
	indicator->show();
	indicator->raise();
	lastIndicatorPos = pos;
    } else {
	indicator->resize( width(), 3 );
	if ( pos != QPoint( -1, -1 ) )
	     indicator->move( 0, pos.y() - 1 );
	indicator->show();
	indicator->raise();
	lastIndicatorPos = pos;
    }
    if ( !wasVsisible )
	QApplication::sendPostedEvents();
}

void QDesignerToolBar::doInsertWidget( const QPoint &p )
{
    if ( formWindow != MainWindow::self->formWindow() )
	return;
    calcIndicatorPos( p );
    QWidget *w = WidgetFactory::create( MainWindow::self->currentTool(), this, 0, TRUE );
    installEventFilters( w );
    MainWindow::self->formWindow()->insertWidget( w, TRUE );
    QDesignerAction *a = new QDesignerAction( w, parent() );
    int index = actionList.findRef( *actionMap.find( insertAnchor ) );
    if ( index != -1 && afterAnchor )
	++index;
    if ( !insertAnchor )
	index = 0;
    AddActionToToolBarCommand *cmd = new AddActionToToolBarCommand( tr( "Add Widget '%1' to Toolbar '%2'" ).
								    arg( w->name() ).arg( caption() ),
								    formWindow, a, this, index );
    formWindow->commandHistory()->addCommand( cmd );
    cmd->execute();
    MainWindow::self->resetTool();
}

void QDesignerToolBar::clear()
{
    for ( QAction *a = actionList.first(); a; a = actionList.next() ) {
	if ( a->inherits( "QDesignerAction" ) )
	    ( (QDesignerAction*)a )->remove();
    }
    QToolBar::clear();
}

void QDesignerToolBar::installEventFilters( QWidget *w )
{
    if ( !w )
	return;
    QObjectList *l = w->queryList( "QWidget" );
    for ( QObject *o = l->first(); o; o = l->next() )
	o->installEventFilter( this );
    delete l;
}



QDesignerMenuBar::QDesignerMenuBar( QWidget *mw )
    : QMenuBar( mw, 0 )
{
    show();
    setAcceptDrops( TRUE );
    MetaDataBase::addEntry( this );
    itemNum = 0;
    mousePressed = FALSE;
    lastIndicatorPos = QPoint( -1, -1 );
    insertAt = -1;
    indicator = new QDesignerIndicatorWidget( this );
    indicator->hide();
    findFormWindow();
}

void QDesignerMenuBar::findFormWindow()
{
    QWidget *w = this;
    while ( w ) {
	if ( w->inherits( "FormWindow" ) )
	    formWindow = (FormWindow*)w;
	w = w->parentWidget();
    }
}

void QDesignerMenuBar::contextMenuEvent( QContextMenuEvent *e )
{
    e->accept();
    int itm = itemAtPos( e->pos() );
    if ( itm == -1 ) {
	if ( formWindow )
	    formWindow->mainWindow()->popupFormWindowMenu( e->globalPos(), formWindow );
	return;
    }
    QPopupMenu menu( this );
    menu.insertItem( tr( "Delete Item" ), 1 );
    menu.insertItem( tr( "Rename Item..." ), 2 );
    int res = menu.exec( e->globalPos() );
    if ( res == 1 ) {
	QMenuItem *item = findItem( idAt( itm ) );
	RemoveMenuCommand *cmd = new RemoveMenuCommand( tr( "Delete Menu '%1'" ).arg( item->text() ),
							formWindow,
							(QMainWindow*)parentWidget(), this,
							(QDesignerPopupMenu*)item->popup(),
							idAt( itm ), itm, item->text() );
	formWindow->commandHistory()->addCommand( cmd );
	cmd->execute();
	// #### need to do a proper invalidate and re-layout
	parentWidget()->layout()->invalidate();
	parentWidget()->layout()->activate();
    } else if ( res == 2 ) {
	bool ok;
	QString old = text( idAt( itm ) );
	QString txt = QInputDialog::getText( tr( "Rename Menu Item" ), tr( "Menu Text" ),
					     QLineEdit::Normal, text( idAt( itm ) ), &ok, 0 );
	if ( ok ) {
	    RenameMenuCommand *cmd = new RenameMenuCommand(
		tr( "Rename Menu '%1' to '%2'" ).arg( old ).arg( txt ),
		formWindow, this, idAt( itm ), old, txt );
	    formWindow->commandHistory()->addCommand( cmd );
	    cmd->execute();
	}
    }
}

void QDesignerMenuBar::mousePressEvent( QMouseEvent *e )
{
    lastIndicatorPos = QPoint( -1, -1 );
    insertAt = -1;
    mousePressed = TRUE;
    if ( e->button() == MidButton || e->button() == RightButton )
	return;

    dragStartPos = e->pos();
    QMenuBar::mousePressEvent( e );
}

void QDesignerMenuBar::mouseMoveEvent( QMouseEvent *e )
{
    if ( !mousePressed || e->state() == NoButton ) {
	QMenuBar::mouseMoveEvent( e );
	return;
    }
    if ( QABS( QPoint( dragStartPos - e->pos() ).manhattanLength() ) < QApplication::startDragDistance() )
	return;
    hidePopups();
    activateItemAt( -1 );
    int itm = itemAtPos( dragStartPos );
    if ( itm == -1 )
	return;
    QPopupMenu *popup = findItem( idAt( itm ) )->popup();
    QString txt = findItem( idAt( itm ) )->text();
    removeItemAt( itm );

    QStoredDrag *drag = new QStoredDrag( "application/x-designer-menuitem", this );
    QString s = QString::number( (long)popup );
    s += "/" + txt;
    drag->setEncodedData( QCString( s.latin1() ) );
    QSize sz( fontMetrics().boundingRect( txt ).size() );
    QPixmap pix( sz.width() + 20, sz.height() * 2 );
    pix.fill( white );
    QPainter p( &pix, this );
    p.drawText( 2, 0, pix.width(), pix.height(), 0, txt );
    p.end();

    QBitmap bm( pix.size() );
    bm.fill( color0 );
    p.begin( &bm );
    p.setPen( color1 );
    p.drawText( 2, 0, pix.width(), pix.height(), 0, txt );
    p.end();
    pix.setMask( bm );
    drag->setPixmap( pix );
    oldPos = itm;
    if ( !drag->drag() ) {
	insertItem( txt, popup, -1, itm );
    }
    lastIndicatorPos = QPoint( -1, -1 );
    indicator->hide();
    mousePressed = FALSE;
}

void QDesignerMenuBar::mouseReleaseEvent( QMouseEvent *e )
{
    QMenuBar::mouseReleaseEvent( e );
    mousePressed = FALSE;
}

#ifndef QT_NO_DRAGANDDROP

void QDesignerMenuBar::dragEnterEvent( QDragEnterEvent *e )
{
    if ( e->provides( "application/x-designer-actions" ) ||
	 e->provides( "application/x-designer-actiongroup" ) ||
	 e->provides( "application/x-designer-separator" ) )
	e->accept();
    if ( e->provides( "application/x-designer-menuitem" ) ||
	 e->provides( "application/x-designer-submenu" ) )
	e->accept();
    lastIndicatorPos = QPoint( -1, -1 );
    insertAt = -1;
}

void QDesignerMenuBar::dragMoveEvent( QDragMoveEvent *e )
{
    if ( e->provides( "application/x-designer-actions" ) ||
	 e->provides( "application/x-designer-menuitem" ) ||