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

void FormWindow::setPropertyShowingBlocked( bool b )
{
    propShowBlocked = b;
}

bool FormWindow::isPropertyShowingBlocked() const
{
    return propShowBlocked;
}

int FormWindow::numSelectedWidgets() const
{
    return usedSelections.count();
}

QString FormWindow::copy()
{
    Resource resource( mainWindow() );
    resource.setWidget( this );
    return resource.copy();
}

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

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

static void find_accel( const QString &txt, QMap<QChar, QWidgetList > &accels, QWidget *w )
{
    int i = txt.find( "&" );
    if ( i == -1 )
	return;
    QChar c = txt[ i + 1 ];
    if ( c.isNull() || c == '&' )
	return;
    c = c.lower();
    QMap<QChar, QWidgetList >::Iterator it = accels.find( c );
    if ( it == accels.end() ) {
	QWidgetList wl;
	wl.append( w );
	accels.insert( c, wl );
    } else {
	QWidgetList *wl = &*it;
	wl->append( w );
    }
}

void FormWindow::checkAccels()
{
    QMap<QChar, QWidgetList > accels;
    QObjectList *l = mainContainer()->queryList( "QWidget" );
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( ( (QWidget*)o )->isVisibleTo( this ) &&
		 insertedWidgets[ (void*)o ] ) {
		QWidget *w = (QWidget*)o;
		const QMetaProperty* text =
		    w->metaObject()->property( w->metaObject()->findProperty( "text", TRUE ), TRUE );
		const QMetaProperty* title =
		    w->metaObject()->property( w->metaObject()->findProperty( "title", TRUE ), TRUE );
		const QMetaProperty* pageTitle =
		    w->metaObject()->property( w->metaObject()->findProperty( "pageTitle", TRUE ), TRUE );
		if ( text )
		    find_accel( w->property( "text" ).toString(), accels, w );
		if ( title )
		    find_accel( w->property( "title" ).toString(), accels, w );
		if ( pageTitle )
		    find_accel( w->property( "pageTitle" ).toString(), accels, w );
	    }
	}
	delete l;
    }

    bool ok = TRUE;
    QWidget *wid;
    for ( QMap<QChar, QWidgetList >::Iterator it = accels.begin(); it != accels.end(); ++it ) {
	if ( (*it).count() > 1 ) {
	    ok = FALSE;
	    switch ( QMessageBox::information( mainWindow(), tr( "Check Accelerators" ),
					       tr( "Accelerator '%1' is used %2 times."
						   ).arg( it.key().upper() ).arg( (*it).count() ),
					       tr( "&Select" ),
					       tr( "&Cancel" ), 0, 2 ) ) {
	    case 0: // select
		clearSelection( FALSE );
		for ( wid = (*it).first(); wid; wid = (*it).next() )
		    selectWidget( wid, TRUE );
		return;
	    case 1: // cancel
		return;
	    }
	}
    }

    if ( ok )
	QMessageBox::information( mainWindow(), tr( "Check Accelerators" ),
				  tr( "No accelerator is used more than once." ) );
}

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

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

void FormWindow::paste( const QString &cb, QWidget *parent )
{
    Resource resource( mainWindow() );
    resource.setWidget( this );
    resource.paste( cb, parent );
}

void FormWindow::selectAll()
{
    checkedSelectionsForMove = FALSE;
    blockSignals( TRUE );
    QObjectList *l = mainContainer()->queryList( "QWidget" );
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( ( (QWidget*)o )->isVisibleTo( this ) &&
		 insertedWidgets[ (void*)o ] ) {
		selectWidget( (QWidget*)o );
	    }
	}
	delete l;
    }

    blockSignals( FALSE );
    emitSelectionChanged();
    if ( propertyWidget )
	emitShowProperties( propertyWidget );
    emitSelectionChanged();
}

void FormWindow::layoutHorizontal()
{
    QWidgetList widgets( selectedWidgets() );
    LayoutHorizontalCommand *cmd = new LayoutHorizontalCommand( tr( "Lay out horizontally" ),
								this, mainContainer(), 0, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutVertical()
{
    QWidgetList widgets( selectedWidgets() );
    LayoutVerticalCommand *cmd = new LayoutVerticalCommand( tr( "Lay out vertically" ),
							    this, mainContainer(), 0, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutHorizontalSplit()
{
    QWidgetList widgets( selectedWidgets() );
    LayoutHorizontalSplitCommand *cmd = new LayoutHorizontalSplitCommand( tr( "Lay out horizontally (in splitter)" ),
									  this, mainContainer(), 0, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutVerticalSplit()
{
    QWidgetList widgets( selectedWidgets() );
    LayoutVerticalSplitCommand *cmd = new LayoutVerticalSplitCommand( tr( "Lay out vertically (in splitter)" ),
								      this, mainContainer(), 0, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutGrid()
{
    int xres = grid().x();
    int yres = grid().y();

    QWidgetList widgets( selectedWidgets() );
    LayoutGridCommand *cmd = new LayoutGridCommand( tr( "Lay out in a grid" ),
						    this, mainContainer(), 0, widgets, xres, yres );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutHorizontalContainer( QWidget *w )
{
    if ( w == this )
	w = mainContainer();
    QObjectList *l = (QObjectList*)WidgetFactory::containerOfWidget(w)->children();
    if ( !l )
	return;
    QWidgetList widgets;
    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     ( (QWidget*)o )->isVisibleTo( this ) &&
	     insertedWidgets.find( (QWidget*)o ) )
	    widgets.append( (QWidget*)o );
    }
    LayoutHorizontalCommand *cmd = new LayoutHorizontalCommand( tr( "Lay out children horizontally" ),
								this, mainContainer(), w, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutVerticalContainer( QWidget *w )
{
    if ( w == this )
	w = mainContainer();
    QObjectList *l = (QObjectList*)WidgetFactory::containerOfWidget(w)->children();
    if ( !l )
	return;
    QWidgetList widgets;
    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     ( (QWidget*)o )->isVisibleTo( this ) &&
	     insertedWidgets.find( (QWidget*)o ) )
	    widgets.append( (QWidget*)o );
    }
    LayoutVerticalCommand *cmd = new LayoutVerticalCommand( tr( "Lay out children vertically" ),
							    this, mainContainer(), w, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutGridContainer( QWidget *w )
{
    if ( w == this )
	w = mainContainer();
    int xres = grid().x();
    int yres = grid().y();

    QObjectList *l = (QObjectList*)WidgetFactory::containerOfWidget(w)->children();
    if ( !l )
	return;
    QWidgetList widgets;
    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     ( (QWidget*)o )->isVisibleTo( this ) &&
	     insertedWidgets.find( (QWidget*)o ) )
	    widgets.append( (QWidget*)o );
    }
    LayoutGridCommand *cmd = new LayoutGridCommand( tr( "Lay out children in a grid" ),
						    this, mainContainer(), w, widgets, xres, yres );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::breakLayout( QWidget *w )
{
    if ( w == this )
	w = mainContainer();
    w = WidgetFactory::containerOfWidget( w );
    QPtrList<Command> commands;

    for (;;) {
	if ( !w || w == this )
	    break;
	if ( WidgetFactory::layoutType( w ) != WidgetFactory::NoLayout ) {
	    Command *cmd = breakLayoutCommand( w );
	    if ( cmd )
		commands.insert( 0, cmd );
	    if ( !w->inherits( "QLayoutWidget" ) && !w->inherits( "QSplitter" ) )
		break;
	}
	w = w->parentWidget();
    }

    if ( commands.isEmpty() )
	return;

    clearSelection( FALSE );
    MacroCommand *cmd = new MacroCommand( tr( "Break Layout" ), this, commands );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

BreakLayoutCommand *FormWindow::breakLayoutCommand( QWidget *w )
{
    QObjectList *l = (QObjectList*)w->children();
    if ( !l )
	return 0;

    QWidgetList widgets;
    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     !mainWindow()->isAToolBarChild( (QWidget*)o ) &&
	     ( (QWidget*)o )->isVisibleTo( this ) &&
	     insertedWidgets.find( (QWidget*)o ) )
	    widgets.append( (QWidget*)o );
    }
    return new BreakLayoutCommand( tr( "Break Layout" ), this, WidgetFactory::widgetOfContainer( w ), widgets );
}

int FormWindow::numVisibleWidgets() const
{
    QPtrDictIterator<QWidget> it( insertedWidgets );
    int visible = 0;
    for ( ; it.current(); ++it ) {
	if ( it.current()->isVisibleTo( (FormWindow*)this ) )
	    visible++;
    }
    return visible;
}

bool FormWindow::hasInsertedChildren( QWidget *w ) const
{
    if ( !w )
	return FALSE;
    w = WidgetFactory::containerOfWidget( w );
    if ( !w )
	return FALSE;
    QObjectList *l = w->queryList( "QWidget" );
    if ( !l || !l->first() ) {
	delete l;
	return FALSE;
    }

    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     ( (QWidget*)o )->isVisibleTo( (FormWindow*)this ) &&
	     insertedWidgets.find( (QWidget*)o ) ) {
	    delete l;
	    return TRUE;
	}
    }

    delete l;
    return FALSE;
}

bool FormWindow::allowMove( QWidget *w )
{
    w = w->parentWidget();
    while ( w ) {
	if ( ( isMainContainer( w ) || insertedWidgets.find( w ) ) && WidgetFactory::layoutType( w ) == WidgetFactory::NoLayout )
	    return TRUE;
	w = w->parentWidget();
    }
    return FALSE;
}


void FormWindow::editConnections()
{
    buffer = 0;
    if ( !connectSender || !connectReceiver )
	return;
    mainWindow()->statusBar()->clear();
    ConnectionEditor editor( mainwindow, connectSender, connectReceiver, this );
    mainWindow()->statusBar()->message( tr( "Edit connections...") );
    editor.exec();
    mainWindow()->statusBar()->clear();
    if ( !toolFixed )
	mainwindow->resetTool();
    connectSender = connectReceiver = 0;
}

void FormWindow::saveBackground()
{
    if ( buffer )
	delete buffer;
    buffer = new QPixmap( width(), height() );
    *buffer = QPixmap::grabWindow( winId() );
}

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

    int a =QABS( connectStartPos.x() - currentConnectPos.x() );
    int b = QABS( connectStartPos.y() - currentConnectPos.y() );
    QRect r( connectStartPos, currentConnectPos );

    if ( a < 32 || b < 32 ) { // special case: vertical or horizontal line
	r = r.normalize();
	unclippedPainter->drawPixmap( r.x() - 2, r.y() - 2, *buffer,
				      r.x() - 2, r.y() - 2, r.width() + 4, r.height() + 4 );
	return;
    }

    if ( a <= 0 )
	a = 1;
    if ( b <= 0 )
	b = 1;
    int w, h;
    if ( b > a ) {
	h = 64;
	w = ( a * h ) / b;
    } else {
	w = 64;
	h = ( b * w ) / a;
    }

    int dx = 2 * w / 3;
    int dy = 2 * h / 3;
    QPoint p( connectStartPos );

    if ( r.x() > r.right() ) {
	dx = dx * -1;
	p.setX( p.x() - 64 );
	r.moveBy( -64, 0 );
    }
    if ( r.y() > r.bottom() ) {
	dy = dy * -1;
	p.setY( p.y() - 64 );
	r.moveBy( 0, -64 );
    }

    w = h = 64;
    r = r.normalize();