formwindow.cpp

Trolltech公司发布的基于C++图形开发环境

		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( QWidget *w, bool select )
{
    if ( isMainContainer( w ) ) {
	QWidget *opw = propertyWidget;
	propertyWidget = mainContainer();
	repaintSelection( opw );
	emitShowProperties( propertyWidget );
	return;
    }

    if ( select ) {
	QWidget *opw = propertyWidget;
	propertyWidget = w;
	repaintSelection( 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 );
	QWidget *opw = propertyWidget;
	if ( !usedSelections.isEmpty() )
	    propertyWidget = QPtrDictIterator<WidgetSelection>( usedSelections ).current()->widget();
	else
	    propertyWidget = mainContainer();
	repaintSelection( 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 ) {
	QWidget *opw = propertyWidget;
	propertyWidget = mainContainer();
	repaintSelection( 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( QWidget *w )
{
    return usedSelections.find( w ) != 0;
}

void FormWindow::moveSelectedWidgets( int dx, int dy )
{
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it ) {
	WidgetSelection *s = it.current();
	QWidget *w = s->widget();
	if ( w->parentWidget() && WidgetFactory::layoutType( w->parentWidget() ) != WidgetFactory::NoLayout )
	    continue;
	w->move( w->x() + dx, w->y() + dy );
	s->updateGeometry();
	updateChildSelections( w );
    }
}

CommandHistory *FormWindow::commandHistory()
{
    return &commands;
}

void FormWindow::undo()
{
    commandHistory()->undo();
}

void FormWindow::redo()
{
    commandHistory()->redo();
}

void FormWindow::raiseChildSelections( QWidget *w )
{
    QObjectList *l = w->queryList( "QWidget" );
    if ( !l )
	return;
    if ( !l->first() ) {
	delete l;
	return;
    }

    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it ) {
	if ( l->findRef( it.current()->widget() ) != -1 )
	    it.current()->show();
    }
}

void FormWindow::updateChildSelections( QWidget *w )
{
    QObjectList *l = w->queryList( "QWidget" );
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( o->isWidgetType() &&
		 insertedWidgets.find( (QWidget*)o ) )
		updateSelection( (QWidget*)o );
	}
	delete l;
    }
}

void FormWindow::checkSelectionsForMove( QWidget *w )
{
    checkedSelectionsForMove = TRUE;

    QObjectList *l = w->parentWidget()->queryList( "QWidget", 0, FALSE, FALSE );
    moving.clear();
    if ( l ) {
	QPtrDictIterator<WidgetSelection> it( usedSelections );
	WidgetSelection *sel;
	while ( ( sel = it.current() ) != 0 ) {
	    if ( it.current()->widget() == mainContainer() )
		continue;
	    ++it;
	    if ( l->find( sel->widget() ) == -1 ) {
 		if ( WidgetFactory::layoutType( w ) == WidgetFactory::NoLayout )
		    sel->setWidget( 0 );
	    } else {
		if ( WidgetFactory::layoutType( sel->widget()->parentWidget() ) == WidgetFactory::NoLayout ) {
		    moving.insert( (ulong)sel->widget(), sel->widget()->pos() );
		    sel->widget()->raise();
		    raiseChildSelections( sel->widget() );
		    raiseSelection( sel->widget() );
		}
	    }
	}
	delete l;
    }
}

void FormWindow::deleteWidgets()
{
    QWidgetList widgets;
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it )
	widgets.append( it.current()->widget() );

    DeleteCommand *cmd = new DeleteCommand( tr( "Delete" ), this, widgets );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::editAdjustSize()
{
    QList<Command> commands;
    QWidgetList widgets = selectedWidgets();
    if ( widgets.isEmpty() ) {
	QRect oldr = geometry();
	mainContainer()->adjustSize();
	resize( mainContainer()->size() );
	QRect nr = geometry();
	if ( oldr != nr ) {
	    ResizeCommand *cmd = new ResizeCommand( tr( "Adjust Size" ), this, this, oldr, nr );
	    commandHistory()->addCommand( cmd );
	}
	return;
    }
    for ( QWidget* w = widgets.first(); w; w = widgets.next() ) {
	if ( w->parentWidget() && WidgetFactory::layoutType( w->parentWidget() ) != WidgetFactory::NoLayout )
	    continue;
	QRect oldr = w->geometry();
	w->adjustSize();
	QRect nr = w->geometry();
	if ( oldr != nr )
	    commands.append( new ResizeCommand( tr("Adjust Size"), this, w, oldr, nr ) );
    }

    if ( commands.isEmpty() )
	return;
    for ( WidgetSelection *s = selections.first(); s; s = selections.next() )
	s->updateGeometry();

    MacroCommand *cmd = new MacroCommand( tr( "Adjust Size" ), this, commands );
    commandHistory()->addCommand( cmd );
}


QWidgetList FormWindow::selectedWidgets() const
{
    QWidgetList widgets;
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it )
	widgets.append( it.current()->widget() );
    return widgets;
}

void FormWindow::widgetChanged( QWidget *w )
{
    updateSelection( w );
}

QLabel *FormWindow::sizePreview() const
{
    if ( !sizePreviewLabel ) {
	( (FormWindow*)this )->sizePreviewLabel = new QLabel( (FormWindow*)this );
	( (FormWindow*)this )->sizePreviewLabel->hide();
	( (FormWindow*)this )->sizePreviewLabel->setBackgroundColor( QColor( 255, 255, 128 ) );
	( (FormWindow*)this )->sizePreviewLabel->setFrameStyle( QFrame::Plain | QFrame::Box );
    }
    return sizePreviewLabel;
}

void FormWindow::invalidCheckedSelections()
{
    checkedSelectionsForMove = FALSE;
}

void FormWindow::checkPreviewGeometry( QRect &r )
{
    if ( !rect().contains( r ) ) {
	if ( r.left() < rect().left() )
	    r.moveTopLeft( QPoint( 0, r.top() ) );
	if ( r.right() > rect().right()  )
	    r.moveBottomRight( QPoint( rect().right(), r.bottom() ) );
	if ( r.top() < rect().top() )
	    r.moveTopLeft( QPoint( r.left(), rect().top() ) );
	if ( r.bottom() > rect().bottom()  )
	    r.moveBottomRight( QPoint( r.right(), rect().bottom() ) );
    }
}

void FormWindow::focusInEvent( QFocusEvent * )
{
}

void FormWindow::focusOutEvent( QFocusEvent * )
{
    if ( propertyWidget && !isMainContainer( propertyWidget ) && !isWidgetSelected( propertyWidget ) ) {
	QWidget *opw = propertyWidget;
	propertyWidget = mainContainer();
	repaintSelection( opw );
    }
}

void FormWindow::resizeEvent( QResizeEvent *e )
{
    QWidget::resizeEvent( e );
    if ( currTool == ORDER_TOOL )
	repositionOrderIndicators();

#if defined(_WS_WIN32_)
    windowsRepaintWorkaroundTimer->start( 100, TRUE );
#endif
}

void FormWindow::windowsRepaintWorkaroundTimerTimeout()
{