97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
/******************************************************************************
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* QSkinny - Copyright (C) 2016 Uwe Rathmann
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* This file may be used under the terms of the QSkinny License, Version 1.0
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*****************************************************************************/
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#include "QskObjectTree.h"
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#include <qguiapplication.h>
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#include <qquickitem.h>
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#include <qquickwindow.h>
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bool QskObjectTree::isRoot( const QObject* object )
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{
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return object == QGuiApplication::instance();
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}
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QObjectList QskObjectTree::childNodes( const QObject* object )
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{
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QObjectList children;
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if ( object == nullptr )
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{
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const auto windows = QGuiApplication::topLevelWindows();
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for ( auto window : windows )
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children += window;
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}
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else if ( object->isWindowType() )
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{
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const auto childObjects = object->children();
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for ( auto child : childObjects )
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{
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if ( child->isWindowType() )
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children += child;
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}
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if ( auto w = qobject_cast< const QQuickWindow* >( object ) )
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{
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// For some reason the window is not the parent of its contentItem()
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children += w->contentItem();
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}
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}
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else if ( auto item = qobject_cast< const QQuickItem* >( object ) )
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{
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const auto childItems = item->childItems();
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for ( auto child : childItems )
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children += child;
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}
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return children;
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}
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QObject* QskObjectTree::parentNode( const QObject* object )
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{
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if ( object == nullptr )
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return nullptr;
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if ( object->isWindowType() )
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{
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if ( object->parent() == nullptr )
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return QGuiApplication::instance();
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}
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if ( auto item = qobject_cast< const QQuickItem* >( object ) )
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{
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if ( item->parentItem() )
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return item->parentItem();
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return item->window();
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}
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return object->parent();
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}
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void QskObjectTree::traverseDown( QObject* object, Visitor& visitor )
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{
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const auto children = childNodes( object );
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for ( QObject* child : children )
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{
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const bool done = visitor.visitDown( child );
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if ( !done )
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traverseDown( child, visitor );
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}
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}
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void QskObjectTree::traverseUp( QObject* object, Visitor& visitor )
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{
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QObject* parent = parentNode( object );
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if ( parent )
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{
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const bool done = visitor.visitUp( parent );
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if ( !done )
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traverseUp( parent, visitor );
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}
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}
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