Qt:Документация 4.3.2/graphicsview-diagramscene-diagramtextitem-cpp
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[править] diagramtextitem.cpp Example File
graphicsview/diagramscene/diagramtextitem.cpp
/**************************************************************************** ** ** Copyright (C) 2007-2007 Trolltech ASA. All rights reserved. ** ** This file is part of the example classes of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License version 2.0 as published by the Free Software Foundation ** and appearing in the file LICENSE.GPL included in the packaging of ** this file. Please review the following information to ensure GNU ** General Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/ ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** In addition, as a special exception, Trolltech gives you certain ** additional rights. These rights are described in the Trolltech GPL ** Exception version 1.0, which can be found at ** http://www.trolltech.com/products/qt/gplexception/ and in the file ** GPL_EXCEPTION.txt in this package. ** ** In addition, as a special exception, Trolltech, as the sole copyright ** holder for Qt Designer, grants users of the Qt/Eclipse Integration ** plug-in the right for the Qt/Eclipse Integration to link to ** functionality provided by Qt Designer and its related libraries. ** ** Trolltech reserves all rights not expressly granted herein. ** ** Trolltech ASA (c) 2007 ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #include <QtGui> #include "diagramtextitem.h" #include "diagramscene.h" DiagramTextItem::DiagramTextItem(QGraphicsItem *parent, QGraphicsScene *scene) : QGraphicsTextItem(parent, scene) { setFlag(QGraphicsItem::ItemIsMovable); setFlag(QGraphicsItem::ItemIsSelectable); } QVariant DiagramTextItem::itemChange(GraphicsItemChange change, const QVariant &value) { if (change == QGraphicsItem::ItemSelectedChange) emit selectedChange(this); return value; } void DiagramTextItem::focusOutEvent(QFocusEvent *event) { setTextInteractionFlags(Qt::NoTextInteraction); emit lostFocus(this); QGraphicsTextItem::focusOutEvent(event); } void DiagramTextItem::mousePressEvent(QGraphicsSceneMouseEvent *event) { scene()->clearSelection(); QGraphicsTextItem::mousePressEvent(event); setSelected(true); } void DiagramTextItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) { if (textInteractionFlags() & Qt::TextEditable) { QGraphicsTextItem::mouseMoveEvent(event); } else QGraphicsItem::mouseMoveEvent(event); } void DiagramTextItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) { setTextInteractionFlags(Qt::TextEditorInteraction); QGraphicsSceneMouseEvent *mouseEvent = new QGraphicsSceneMouseEvent(QEvent::GraphicsSceneMousePress); mouseEvent->setAccepted(true); mouseEvent->setPos(event->pos()); mouseEvent->setScenePos(event->scenePos()); mouseEvent->setScreenPos(event->screenPos()); mouseEvent->setButtonDownPos(Qt::LeftButton, event->buttonDownPos(Qt::LeftButton)); mouseEvent->setButtonDownScreenPos(Qt::LeftButton, event->buttonDownScreenPos(Qt::LeftButton)); mouseEvent->setButtonDownScenePos(Qt::LeftButton, event->buttonDownScenePos(Qt::LeftButton)); mouseEvent->setWidget(event->widget()); QGraphicsTextItem::mousePressEvent(mouseEvent); delete mouseEvent; }
Copyright © 2007 Trolltech | Trademarks | Qt 4.3.2
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