formwindow.cpp

来自「qt-x11-free-3.0.3.tar.gz minigui图形界面工具」· C++ 代码 · 共 2,164 行 · 第 1/5 页

	    // tell property editor to update
	    if ( propertyWidget && propertyWidget->isWidgetType() && !isMainContainer( propertyWidget ) )
		emitUpdateProperties( propertyWidget );

	    QMapConstIterator<ulong,QPoint> it = moving.begin();
	    QWidget *oldParent = ( (QWidget*)it.key() )->parentWidget();
	    QWidget *newParent = oldParent;
	    // check whether we have to reparent the selection
	    QWidget* wa = containerAt( e->globalPos(), ( (QWidget*)it.key() ) );
	    if ( wa ) {
		wa = WidgetFactory::containerOfWidget( wa );
		// ok, looks like we moved onto a container

		// check whether we really have different parents.
		if ( wa == ( (QWidget*)it.key() )->parentWidget() )
		    goto make_move_command;

		// break layout if necessary
		if ( WidgetFactory::layoutType( wa ) != WidgetFactory::NoLayout ) {
		    if ( QMessageBox::information( mainWindow(), tr( "Inserting a Widget" ),
						   tr( "You tried to insert a widget into the "
						       "layout Container Widget '%1'.\n"
						       "This is not possible. "
						       "In order to insert the widget, the layout of '%1'\n"
						       "must first be broken.\n"
						       "Break the layout or cancel the operation?" ).
						   arg( wa->name() ).
						   arg( wa->name() ), tr( "&Break Layout" ), tr( "&Cancel" ) ) )
			goto make_move_command; // cancel
		    breakLayout( wa );
		}

		// doesn't need to be a command, the MoveCommand does reparenting too
		bool emitSelChanged = FALSE;
		for ( QMap<ulong, QPoint>::Iterator it = moving.begin(); it != moving.end(); ++it ) {
		    QWidget *i = (QWidget*)it.key();
		    if ( !emitSelChanged && i->inherits( "QButton" )  ) {
			if ( i->parentWidget() && i->parentWidget()->inherits( "QButtonGroup" ) ||
			     wa->inherits( "QButtonGroup" ) )
			    emitSelChanged = TRUE;
			if ( !wa->inherits( "QButtonGroup" ) ) {
			    MetaDataBase::setPropertyChanged( i, "buttonGroupId", FALSE );
			    if ( i->parentWidget() && i->parentWidget()->inherits( "QButtonGroup" ) )
				( (QButtonGroup*)i->parentWidget() )->remove( (QButton*)i );
			}
		    }
		    QPoint pos = wa->mapFromGlobal( i->mapToGlobal( QPoint(0,0) ) );
		    i->reparent( wa, pos, TRUE );
		    raiseSelection( i );
		    raiseChildSelections( i );
		    widgetChanged( i );
		    mainWindow()->objectHierarchy()->widgetRemoved( i );
		    mainWindow()->objectHierarchy()->widgetInserted( i );
		}
		if ( emitSelChanged ) {
		    emit showProperties( wa );
		    emit showProperties( propertyWidget );
		}
		newParent = wa;
	    }

	make_move_command:
	    QWidgetList widgets; // collect the widgets and its old and new positions which have been moved
	    QValueList<QPoint> oldPos, newPos;
	    for ( it = moving.begin(); it != moving.end(); ++it ) {
		widgets.append( (QWidget*)it.key() );
		oldPos.append( *it );
		newPos.append( ( (QWidget*)it.key() )->pos() );
	    }
	    // add move command, don't execute it, this is just a summary of the operations we did during the move-event handling
	    commandHistory()->addCommand( new MoveCommand( tr( "Move" ),
							   this, widgets,
							   oldPos, newPos, oldParent, newParent ) );
	} else if ( drawRubber ) { // we were drawing a rubber selection
	    endRectDraw(); // get rid of the rectangle
	    blockSignals( TRUE );
	    selectWidgets(); // select widgets which intersect the rect
	    blockSignals( FALSE );
	    emitSelectionChanged(); // inform about selection changes
	    if ( propertyWidget )
		emitShowProperties( propertyWidget );
	}
	break;
    case CONNECT_TOOL:
	restoreConnectionLine();
	if ( connectSender )
	    restoreRect( QRect( mapToForm(  ( (QWidget*)connectSender )->parentWidget(),
					    ( (QWidget*)connectSender )->pos() ),
				( (QWidget*)connectSender )->size() ) );
	if ( connectReceiver )
	    restoreRect( QRect( mapToForm( ( (QWidget*)connectReceiver )->parentWidget(),
					   ( (QWidget*)connectReceiver )->pos() ),
				( (QWidget*)connectReceiver )->size() ) );
	endUnclippedPainter();
	qApp->processEvents();
	if ( connectSender && connectReceiver )
	    editConnections();
	break;
    case ORDER_TOOL:
	break;
    default: // any insert widget tool is active
	if ( insertParent ) { // we should insert the new widget now
	    endRectDraw();
	    if ( WidgetFactory::layoutType( insertParent ) != WidgetFactory::NoLayout ) {
		if ( QMessageBox::information( mainWindow(), tr( "Inserting a Widget" ),
					       tr( "You tried to insert a widget into the "
						   "layout Container Widget '%1'.\n"
						   "This is not possible. "
						   "In order to insert the widget, the layout of '%1'\n"
						   "must first be broken.\n"
						   "Break the layout or cancel the operation?" ).
					       arg( insertParent->name() ).
					       arg( insertParent->name() ), tr( "&Break Layout" ), tr( "&Cancel" ) ) == 0 ) {
		    breakLayout( insertParent );
		} else {
		    if ( !toolFixed )
			mainWindow()->resetTool();
		    break;
		}
	    }
	    insertWidget(); // so do it
	}
	break;
    }
    widgetPressed = FALSE;
    drawRubber = FALSE;
    insertParent = 0;
    delete buffer;
    buffer = 0;
}

void FormWindow::handleKeyPress( QKeyEvent *e, QWidget *w )
{
    e->ignore();
    checkSelectionsTimer->stop();
    if ( !checkedSelectionsForMove &&
	 ( e->key() == Key_Left ||
	   e->key() == Key_Right ||
	   e->key() == Key_Up ||
	   e->key() == Key_Down ) &&
	 propertyWidget->isWidgetType() )
	checkSelectionsForMove( (QWidget*)propertyWidget );
    checkSelectionsTimer->start( 1000, TRUE );
    if ( e->key() == Key_Left || e->key() == Key_Right ||
	 e->key() == Key_Up || e->key() == Key_Down ) {
	QWidgetList widgets;
	QValueList<QPoint> oldPos, newPos;
	for ( WidgetSelection *s = selections.first(); s; s = selections.next() ) {
	    if ( s->isUsed() ) {
		int dx = 0, dy = 0;
		bool control = e->state() & ControlButton;

		switch ( e->key() ) {
		case Key_Left: {
		    e->accept();
		    if ( control )
			dx = -1;
		    else
			dx = -grid().x();
		} break;
		case Key_Right: {
		    e->accept();
		    if ( control )
			dx = 1;
		    else
			dx = grid().x();
		} break;
		case Key_Up: {
		    e->accept();
		    if ( control )
			dy = -1;
		    else
			dy = -grid().y();
		} break;
		case Key_Down: {
		    e->accept();
		    if ( control )
			dy = 1;
		    else
			dy = grid().y();
		} break;
		default:
		    break;
		}

		widgets.append( s->widget() );
		oldPos.append( s->widget()->pos() );
		newPos.append( s->widget()->pos() + QPoint( dx, dy ) );
	    }
	}
	if ( !widgets.isEmpty() ) {
	    MoveCommand *cmd = new MoveCommand( tr( "Move" ), this,
						widgets, oldPos, newPos, 0, 0 );
	    commandHistory()->addCommand( cmd, TRUE );
	    cmd->execute();
	}
    }
    if ( !e->isAccepted() ) {
	QObjectList *l = queryList( "QWidget" );
	if ( !l )
	    return;
	if ( l->find( w ) != -1 )
	    e->accept();
	delete l;
    }

}

void FormWindow::handleKeyRelease( QKeyEvent *e, QWidget * )
{
    e->ignore();
}

void FormWindow::selectWidget( QObject *o, bool select )
{
    if ( !o->isWidgetType() ) {
	// ########### do QObject stuff
	return;
    }

    QWidget *w = (QWidget*)o;

    if ( isMainContainer( w ) ) {
	QObject *opw = propertyWidget;
	propertyWidget = mainContainer();
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	emitShowProperties( propertyWidget );
	return;
    }

    if ( mainContainer()->inherits( "QMainWindow" ) &&
	 w == ( (QMainWindow*)mainContainer() )->centralWidget() ) {
	QObject *opw = propertyWidget;
	propertyWidget = mainContainer();
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	emitShowProperties( propertyWidget );
	return;
    }

    if ( o->inherits( "QDesignerToolBar" ) || o->inherits( "QDesignerMenuBar" ) )
	return;

    if ( select ) {
	QObject *opw = propertyWidget;
	propertyWidget = w;
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	if ( !isPropertyShowingBlocked() )
	    emitShowProperties( propertyWidget );
	WidgetSelection *s = usedSelections.find( w );
	if ( s ) {
	    s->show();
	    return;
	}

	for ( WidgetSelection *s2 = selections.first(); s2; s2 = selections.next() ) {
	    if ( !s2->isUsed() ) {
		s = s2;
	    }
	}

	if ( !s ) {
	    s = new WidgetSelection( this, &usedSelections );
	    selections.append( s );
	}

	s->setWidget( w );
	emitSelectionChanged();
    } else {
	WidgetSelection *s = usedSelections.find( w );
	if ( s )
	    s->setWidget( 0 );
	QObject *opw = propertyWidget;
	if ( !usedSelections.isEmpty() )
	    propertyWidget = QPtrDictIterator<WidgetSelection>( usedSelections ).current()->widget();
	else
	    propertyWidget = mainContainer();
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	if ( !isPropertyShowingBlocked() )
	    emitShowProperties( propertyWidget );
	emitSelectionChanged();
    }
}

QPoint FormWindow::grid() const
{
    if ( !mainWindow()->snapGrid() )
	return QPoint( 1, 1 );
    return mainWindow()->grid();
}

void FormWindow::updateSelection( QWidget *w )
{
    WidgetSelection *s = usedSelections.find( w );
    if ( !w->isVisibleTo( this ) )
	selectWidget( w, FALSE );
    else if ( s )
	s->updateGeometry();
}

void FormWindow::raiseSelection( QWidget *w )
{
    WidgetSelection *s = usedSelections.find( w );
    if ( s )
	s->show();
}

void FormWindow::repaintSelection( QWidget *w )
{
    WidgetSelection *s = usedSelections.find( w );
    if ( s )
	s->update();
}

void FormWindow::clearSelection( bool changePropertyDisplay )
{
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it )
	it.current()->setWidget( 0, FALSE );

    usedSelections.clear();
    if ( changePropertyDisplay ) {
	QObject *opw = propertyWidget;
	propertyWidget = mainContainer();
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	emitShowProperties( propertyWidget );
    }
    emitSelectionChanged();
}

void FormWindow::startRectDraw( const QPoint &p, const QPoint &global, QWidget *, RectType t )
{
    QPoint pos( p );
    pos = mapFromGlobal( global );
    oldRectValid = FALSE;
    beginUnclippedPainter( TRUE );
    if ( t == Rubber )
	unclippedPainter->setPen( QPen( color0, 1 ) );
    if ( t == Insert )
	rectAnchor = gridPoint( pos );
    else if ( t == Rubber )
	rectAnchor = pos;
    currRect = QRect( rectAnchor, QPoint( 0, 0 ) );
    if ( t == Insert )
	drawSizePreview( pos, tr("Use Size Hint") );
}

void FormWindow::continueRectDraw( const QPoint &p, const QPoint &global, QWidget *, RectType t )
{
    QPoint pos =p;
    pos = mapFromGlobal( global );
    QPoint p2;
    if ( t == Insert )
	p2 = gridPoint( pos );
    else if ( t == Rubber )
	p2 = pos;
    QRect r( rectAnchor, p2 );
    r = r.normalize();

    if ( currRect == r ) {
	QString t = tr( "%1/%2" );
	t = t.arg( r.width() - 1 ).arg( r.height() - 1 );
	drawSizePreview( pos, t );
	return;
    }

    if ( oldRectValid )
	unclippedPainter->drawRect( currRect );
    if ( r.width() > 1 || r.height() > 1 ) {
	oldRectValid = TRUE;
	currRect = r;
	if ( t == Insert ) {
	    QString t = tr( "%1/%2" );
	    t = t.arg( r.width() - 1 ).arg( r.height() - 1 );
	    drawSizePreview( pos, t );
	}
	unclippedPainter->setClipRegion( QRegion( rect() ).subtract( QRect( sizePreviewPos, sizePreviewPixmap.size() ) ) );
	unclippedPainter->drawRect( currRect );
	unclippedPainter->setClipping( FALSE );
    } else {
	oldRectValid = FALSE;
	if ( t == Insert )
	    drawSizePreview( pos, tr("Use Size Hint") );
    }
}

void FormWindow::endRectDraw()
{
    if ( !unclippedPainter )
	return;

    if ( oldRectValid )
	unclippedPainter->drawRect( currRect );
    drawSizePreview( QPoint(-1,-1), QString::null );
    endUnclippedPainter();
}

void FormWindow::selectWidgets()
{
    QObjectList *l = mainContainer()->queryList( "QWidget" );
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( ( (QWidget*)o )->isVisibleTo( this ) &&
		 insertedWidgets[ (void*)o ] ) {
		QPoint p = ( (QWidget*)o )->mapToGlobal( QPoint(0,0) );
		p = mapFromGlobal( p );
		QRect r( p, ( (QWidget*)o )->size() );
		if ( r.intersects( currRect ) && !r.contains( currRect ) )
		    selectWidget( (QWidget*)o );
	    }
	}
	delete l;
    }
    emitSelectionChanged();
}

bool FormWindow::isWidgetSelected( QObject *w )
{
    if ( w->isWidgetType() )
	return usedSelections.find( (QWidget*)w ) != 0;
    return FALSE; // #### do stuff for QObjects
}

void FormWindow::moveSelectedWidgets( int dx, int dy )
{
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it ) {
	WidgetSelection *s = it.current();
	QWidget *w = s->widget();