formwindow.cpp

Linux下的基于X11的图形开发环境。

	QValueList<QPoint> op, np;
	for ( QWidget *i = lst.first(); i; i = lst.next() ) {
	    op.append( i->pos() );
	    QPoint pos = pw->mapFromGlobal( i->mapToGlobal( QPoint( 0, 0 ) ) );
	    pos -= r.topLeft();
	    np.append( pos );
	}

	MoveCommand *mv = new MoveCommand( tr( "Reparent Widgets" ), this, lst, op, np, insertParent, pw );

	if ( !toolFixed )
	    mainwindow->resetTool();
	else
	    setCursorToAll( CrossCursor, w );

	InsertCommand *cmd = new InsertCommand( tr( "Insert %1" ).arg( w->name() ), this, w, r );

	QPtrList<Command> commands;
	commands.append( mv );
	commands.append( cmd );

	MacroCommand *mc = new MacroCommand( tr( "Insert %1" ).arg( w->name() ), this, commands );
	commandHistory()->addCommand( mc );
	mc->execute();
    } else {
	if ( !toolFixed )
	    mainwindow->resetTool();
	else
	    setCursorToAll( CrossCursor, w );

	InsertCommand *cmd = new InsertCommand( tr( "Insert %1" ).arg( w->name() ), this, w, r );
	commandHistory()->addCommand( cmd );
	cmd->execute();
    }

    TemplateWizardInterface *iface = mainWindow()->templateWizardInterface( w->className() );
    if ( iface ) {
	iface->setup( w->className(), w, iFace(), mainWindow()->designerInterface() );
	iface->release();
    }
}

void FormWindow::insertWidget( QWidget *w, bool checkName )
{
    if ( checkName ) {
	QString s = w->name();
	unify( w, s, TRUE );
	w->setName( s );
    }

    MetaDataBase::addEntry( w );
    int id = WidgetDatabase::idFromClassName( WidgetFactory::classNameOf(w) );
    if ( WidgetDatabase::isCustomWidget( id ) ) {
	QWhatsThis::add( w, tr("<b>A %1 (custom widget)</b> "
			    "<p>Click <b>Edit Custom Widgets...</b> in the <b>Tools|Custom</b> "
			    "menu to add and change custom widgets. You can add "
			    "properties as well as signals and slots to integrate custom widgets into "
			    "<i>Qt Designer</i>, and provide a pixmap which will be used to represent "
			    "the widget on the form.</p>")
			    .arg(WidgetDatabase::toolTip( id )) );
	QToolTip::add( w, tr("A %1 (custom widget)").arg(WidgetDatabase::toolTip( id )) );
    } else {
	QString tt = WidgetDatabase::toolTip( id );
	QString wt = WidgetDatabase::whatsThis( id );
	if ( !wt.isEmpty() && !tt.isEmpty() )
	    QWhatsThis::add( w, QString("<b>A %1</b><p>%2</p>").arg( tt ).arg( wt ) );
    }

    restoreCursors( w, this );
    widgets()->insert( w, w );
    w->show();
}

void FormWindow::removeWidget( QWidget *w )
{
    MetaDataBase::removeEntry( w );
    widgets()->take( w );
}

void FormWindow::handleContextMenu( QContextMenuEvent *e, QWidget *w )
{
    CHECK_MAINWINDOW;
    switch ( currTool ) {
    case POINTER_TOOL: {
	if ( !isMainContainer( w ) && qstrcmp( w->name(), "central widget" ) != 0 ) { // press on a child widget
	    raiseChildSelections( w ); // raise selections and select widget
	    selectWidget( w );
	    // if widget is laid out, find the first non-laid out super-widget
	    QWidget *realWidget = w; // but store the original one
	    while ( w->parentWidget() &&
		    ( WidgetFactory::layoutType( w->parentWidget()) != WidgetFactory::NoLayout ||
		      !insertedWidgets.find(w) ) )
		w = w->parentWidget();
	    if ( mainContainer()->inherits( "QMainWindow" ) &&
		 ( (QMainWindow*)mainContainer() )->centralWidget() == realWidget ) {
		e->accept();
		mainwindow->popupFormWindowMenu( e->globalPos(), this );
	    } else {
		e->accept();
		mainwindow->popupWidgetMenu( e->globalPos(), this, realWidget);
	    }
	} else {
	    e->accept();
	    clearSelection();
	    mainwindow->popupFormWindowMenu( e->globalPos(), this );
	}
	break; }
    default:
	break;
    }
}

void FormWindow::handleMousePress( QMouseEvent *e, QWidget *w )
{
    CHECK_MAINWINDOW;
    checkedSelectionsForMove = FALSE;
    checkSelectionsTimer->stop();
    if ( !sizePreviewLabel ) {
	sizePreviewLabel = new QLabel( this );
	sizePreviewLabel->hide();
	sizePreviewLabel->setBackgroundColor( QColor( 255, 255, 128 ) );
	sizePreviewLabel->setFrameStyle( QFrame::Plain | QFrame::Box );
    }

    switch ( currTool ) {
    case POINTER_TOOL:
	if ( !isMainContainer( w ) && qstrcmp( w->name(), "central widget" ) != 0 ) { // press on a child widget
	    // if the clicked widget is not in a layout, raise it
	    if ( !w->parentWidget() || WidgetFactory::layoutType( w->parentWidget() ) == WidgetFactory::NoLayout )
		w->raise();
	    if ( ( e->state() & ControlButton ) ) { // with control pressed, always start rubber band selection
		drawRubber = TRUE;
		currRect = QRect( 0, 0, -1, -1 );
		startRectDraw( mapFromGlobal( e->globalPos() ), e->globalPos(), this, Rubber );
		break;
	    }

	    bool sel = isWidgetSelected( w );
	    if ( !( ( e->state() & ControlButton ) || ( e->state() & ShiftButton ) ) ) { // control not pressed...
		if ( !sel ) { // ...and widget no selectted: unselect all
		    clearSelection( FALSE );
		} else { // ...widget selected
		    // only if widget has a layout (it is a layout meta widget or a laid out container!), unselect its childs
		    if ( WidgetFactory::layoutType( w ) != WidgetFactory::NoLayout ) {
			QObjectList *l = w->queryList( "QWidget" );
			setPropertyShowingBlocked( TRUE );
			for ( QObject *o = l->first(); o; o = l->next() ) {
			    if ( !o->isWidgetType() )
				continue;
			    if ( insertedWidgets.find( (QWidget*)o ) )
				selectWidget( (QWidget*)o, FALSE );
			}
			setPropertyShowingBlocked( FALSE );
			delete l;
		    }
		}
		qApp->processEvents();
	    }
	    if ( ( ( e->state() & ControlButton ) || ( e->state() & ShiftButton ) ) &&
		 sel && e->button() == LeftButton ) { // control pressed and selected, unselect widget
		selectWidget( w, FALSE );
		break;
	    }

	    raiseChildSelections( w ); // raise selections and select widget
	    selectWidget( w );

	    // if widget is laid out, find the first non-laid out super-widget
	    while ( w->parentWidget() &&
		    ( WidgetFactory::layoutType( w->parentWidget()) != WidgetFactory::NoLayout || !insertedWidgets.find(w) ) )
		w = w->parentWidget();

	    if ( e->button() == LeftButton ) { // left button: store original geometry and more as the widget might start moving
		widgetPressed = TRUE;
		widgetGeom = QRect( w->pos(), w->size() );
		oldPressPos = w->mapFromGlobal( e->globalPos() );
		origPressPos = oldPressPos;
		checkedSelectionsForMove = FALSE;
		moving.clear();
		if ( w->parentWidget() && !isMainContainer( w->parentWidget() ) && !isCentralWidget( w->parentWidget() ) ) {
		    targetContainer = w->parentWidget();
		    hadOwnPalette = w->parentWidget()->ownPalette();
		    restorePalette = w->parentWidget()->palette();
		}
	    }
	} else { // press was on the formwindow
	    if ( e->button() == LeftButton ) { // left button: start rubber selection and show formwindow properties
		drawRubber = TRUE;
		if ( !( ( e->state() & ControlButton ) || ( e->state() & ShiftButton ) ) ) {
		    clearSelection( FALSE );
		    QObject *opw = propertyWidget;
		    propertyWidget = mainContainer();
		    if ( opw->isWidgetType() )
			repaintSelection( (QWidget*)opw );
		}
		currRect = QRect( 0, 0, -1, -1 );
		startRectDraw( mapFromGlobal( e->globalPos() ), e->globalPos(), this, Rubber );
	    }
	}
	break;
    case CONNECT_TOOL:
    case BUDDY_TOOL:
	if ( e->button() != LeftButton )
	    break;
	validForBuddy = FALSE;
	if ( currTool == BUDDY_TOOL ) {
	    if ( !w->inherits( "QLabel" ) )
		break;
	    clearSelection( FALSE );
	    validForBuddy = TRUE;
	    mainWindow()->statusBar()->message( tr( "Set buddy for '%1' to..." ).arg( w->name() ) );
	} else {
	    mainWindow()->statusBar()->message( tr( "Connect '%1' with..." ).arg( w->name() ) );
	}
	saveBackground();
	startPos = mapFromGlobal( e->globalPos() );
	currentPos = startPos;
	startWidget = designerWidget( w );
	endWidget = startWidget;
	beginUnclippedPainter( FALSE );
	drawConnectionLine();
	break;
    case ORDER_TOOL:
	if ( !isMainContainer( w ) ) { // press on a child widget
	    orderedWidgets.removeRef( w );
	    orderedWidgets.append( w );
	    for ( QWidget *wid = orderedWidgets.last(); wid; wid = orderedWidgets.prev() ) {
		int i = stackedWidgets.findRef( wid );
		if ( i != -1 ) {
		    stackedWidgets.removeRef( wid );
		    stackedWidgets.insert( 0, wid );
		}
	    }
	    QWidgetList oldl = MetaDataBase::tabOrder( this );
	    TabOrderCommand *cmd = new TabOrderCommand( tr( "Change Tab Order" ), this, oldl, stackedWidgets );
	    cmd->execute();
	    commandHistory()->addCommand( cmd, TRUE );
	    updateOrderIndicators();
	}
	break;
    default: // any insert widget tool
	if ( e->button() == LeftButton ) {
	    insertParent = WidgetFactory::containerOfWidget( mainContainer() ); // default parent for new widget is the formwindow
	    if ( !isMainContainer( w ) ) { // press was not on formwindow, check if we can find another parent
		QWidget *wid = w;
		for (;;) {
		    int id = WidgetDatabase::idFromClassName( WidgetFactory::classNameOf( wid ) );
		    if ( ( WidgetDatabase::isContainer( id ) || wid == mainContainer() ) &&
			 !wid->inherits( "QLayoutWidget" ) && !wid->inherits( "QSplitter" ) ) {
			insertParent = WidgetFactory::containerOfWidget( wid ); // found another parent, store it
			break;
		    } else {
			wid = wid->parentWidget();
			if ( !wid )
			    break;
		    }
		}
	    }
	    startRectDraw( w->mapFromGlobal( e->globalPos() ), e->globalPos(), w, Insert );
	}
	break;
    }
}

void FormWindow::handleMouseDblClick( QMouseEvent *, QWidget *w )
{
    CHECK_MAINWINDOW;
    switch ( currTool ) {
    case ORDER_TOOL:
	if ( !isMainContainer( w ) ) { // press on a child widget
	    orderedWidgets.clear();
	    orderedWidgets.append( w );
	    for ( QWidget *wid = orderedWidgets.last(); wid; wid = orderedWidgets.prev() ) {
		int i = stackedWidgets.findRef( wid );
		if ( i != -1 ) {
		    stackedWidgets.removeRef( wid );
		    stackedWidgets.insert( 0, wid );
		}
	    }
	    QWidgetList oldl = MetaDataBase::tabOrder( this );
	    TabOrderCommand *cmd = new TabOrderCommand( tr( "Change Tab Order" ), this, oldl, stackedWidgets );
	    cmd->execute();
	    commandHistory()->addCommand( cmd, TRUE );
	    updateOrderIndicators();
	}
    default:
	if ( !WidgetFactory::isPassiveInteractor( w ) &&
	     ( isMainContainer( w ) || w == this ) )
	    mainWindow()->editSource();
	break;
    }
}

void FormWindow::handleMouseMove( QMouseEvent *e, QWidget *w )
{
    CHECK_MAINWINDOW;
    if ( ( e->state() & LeftButton ) != LeftButton )
	return;

    QWidget *newendWidget = endWidget, *oldendWidget = endWidget, *wid;
    bool drawRecRect;
    switch ( currTool ) {
    case POINTER_TOOL:
	if ( widgetPressed && allowMove( w ) ) { // we are prepated for a move

	    // if widget is laid out, find the first non-laid out super-widget
	    while ( w->parentWidget() &&
		    ( WidgetFactory::layoutType( w->parentWidget() ) != WidgetFactory::NoLayout || !insertedWidgets.find(w ) ) )
		w = w->parentWidget();

	    // calc correct position
	    QPoint pos = w->mapFromGlobal( e->globalPos() );

#if 0
	    QPoint mpos = w->mapToParent( pos );
	    // check if we are not outside the visible area, else correct coords
	    if ( mpos.x() < 0 )
		pos.setX( w->mapFromParent( QPoint( 0, mpos.y() ) ).x() );
	    if ( mpos.y() < 0 )
		pos.setY( w->mapFromParent( QPoint( mpos.x(), 0 ) ).y() );
	    if ( mpos.x() > w->parentWidget()->width() )
		pos.setX( w->mapFromParent( QPoint( w->parentWidget()->width(), mpos.y() ) ).x() );
	    if ( mpos.y() > w->parentWidget()->height() )
		pos.setY( w->mapFromParent( QPoint( mpos.x(), w->parentWidget()->height() ) ).y() );
#endif

	    // calc move distance and store it
	    QPoint d = oldPressPos - pos;
	    if ( QABS( d.x() ) < grid().x() )
		d.setX( 0 );
	    if ( QABS( d.y() ) < grid().y() )
		d.setY( 0 );
	    if ( d.x() == 0 )
		pos.setX( oldPressPos.x() );
	    if ( d.y() == 0 )
		pos.setY( oldPressPos.y() );
	    oldPressPos = pos;

	    // snap to grid
	    int x = widgetGeom.x() - d.x();
	    widgetGeom.setX( x );
	    x = ( x / grid().x() ) * grid().x();
	    int y = widgetGeom.y() - d.y();
	    widgetGeom.setY( y );
	    y = ( y / grid().y() ) * grid().y();
	    QPoint p = w->pos();

	    if ( x - p.x() != 0 || y - p.y() != 0 ) { // if we actually have to move
		if ( !checkedSelectionsForMove ) { // if not checked yet, check if the correct widget are selected...
		    if ( !isWidgetSelected( w ) ) {	// and unselect others. Only siblings can be moved at the same time
			setPropertyShowingBlocked( TRUE );
			selectWidget( w );
			setPropertyShowingBlocked( FALSE );
		    }
		    checkSelectionsForMove( w );
		}

		// check whether we would have to reparent the selection and highlight the possible new parent container
		QMapConstIterator<ulong, QPoint> it = moving.begin();
		QWidget* wa = containerAt( e->globalPos(), ( (QWidget*)it.key() ) );
		if ( wa  && !isMainContainer( wa ) && !isCentralWidget( wa ) ) {
		    wa = WidgetFactory::containerOfWidget( wa );
		    // ok, looks like we moved onto a container

		    if ( wa != targetContainer ) {
			if ( targetContainer ) {
			    if ( hadOwnPalette )
				targetContainer->setPalette( restorePalette );
			    else
				targetContainer->unsetPalette();
			}
			targetContainer = wa;
			hadOwnPalette = wa->ownPalette();
			restorePalette = wa->palette();
			wa->setPaletteBackgroundColor( wa->colorGroup().midlight() );
		    }
		}
		else if ( targetContainer ) {
		    if( hadOwnPalette )
			targetContainer->setPalette( restorePalette );
		    else
			targetContainer->unsetPalette();
		    targetContainer = 0;
		}

		// finally move the selected widgets and show/update preview label
		moveSelectedWidgets( x - p.x(), y - p.y() );
		sizePreviewLabel->setText( tr( "%1/%2" ).arg( w->pos().x() ).arg( w->pos().y() ) );
		sizePreviewLabel->adjustSize();
		QRect lg( mapFromGlobal( e->globalPos() ) + QPoint( 16, 16 ), sizePreviewLabel->size() );
		checkPreviewGeometry( lg );
		sizePreviewLabel->setGeometry( lg );
		sizePreviewLabel->raise();
		sizePreviewLabel->show();
#if defined(Q_WS_WIN32)
		windowsRepaintWorkaroundTimer->start( 100, TRUE );
#endif
	    } else { // if we don't need to move, do some indication
		QRect lg( mapFromGlobal( e->globalPos() ) + QPoint( 16, 16 ), sizePreviewLabel->size() );
		checkPreviewGeometry( lg );
		sizePreviewLabel->move( lg.x(), lg.y() );
	    }

	    oldPressPos += ( p - w->pos() );
	} else if ( drawRubber ) { // draw rubber if we are in rubber-selection mode
	    continueRectDraw( mapFromGlobal( e->globalPos() ), e->globalPos(), this, Rubber );
	}
	break;
    case CONNECT_TOOL:
	restoreConnectionLine();
	wid = qApp->widgetAt( e->globalPos(), TRUE );
	if ( wid )
	    wid = designerWidget( wid );
	if ( wid && ( isMainContainer( wid ) || insertedWidgets.find( wid ) ) && wid->isVisibleTo( this ) )
	    newendWidget = wid;
	if ( newendWidget &&
	     ( newendWidget->inherits( "QLayoutWidget" ) || newendWidget->inherits( "Spacer" ) ) )
	    newendWidget = (QWidget*)endWidget;
	drawRecRect = newendWidget != endWidget;
	if ( newendWidget &&
	     ( isMainContainer( newendWidget ) || insertedWidgets.find( newendWidget ) ) && !isCentralWidget( newendWidget ) )
	    endWidget = newendWidget;
	mainWindow()->statusBar()->message( tr( "Connect '%1' to '%2'" ).arg( startWidget->name() ).
					    arg( endWidget->name() ) );
	currentPos = mapFromGlobal( e->globalPos() );
	qApp->processEvents();
	if ( drawRecRect )
	    restoreRect( QRect( mapToForm( ( (QWidget*)oldendWidget )->parentWidget(), ( (QWidget*)oldendWidget )->pos() ),