forked from qt-creator/qt-creator
145 lines
4.4 KiB
C++
145 lines
4.4 KiB
C++
/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#include "rubberbandselectionmanipulator.h"
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#include "qdeclarativedesignview_p.h"
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#include <QDebug>
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namespace QmlViewer {
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RubberBandSelectionManipulator::RubberBandSelectionManipulator(QGraphicsObject *layerItem, QDeclarativeDesignView *editorView)
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: m_selectionRectangleElement(layerItem),
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m_editorView(editorView),
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m_beginFormEditorItem(0),
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m_isActive(false)
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{
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m_selectionRectangleElement.hide();
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}
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void RubberBandSelectionManipulator::clear()
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{
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m_selectionRectangleElement.clear();
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m_isActive = false;
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m_beginPoint = QPointF();
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m_itemList.clear();
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m_oldSelectionList.clear();
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}
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QGraphicsItem *RubberBandSelectionManipulator::topFormEditorItem(const QList<QGraphicsItem*> &itemList)
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{
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if (itemList.isEmpty())
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return 0;
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return itemList.first();
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}
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void RubberBandSelectionManipulator::begin(const QPointF& beginPoint)
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{
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m_beginPoint = beginPoint;
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m_selectionRectangleElement.setRect(m_beginPoint, m_beginPoint);
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m_selectionRectangleElement.show();
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m_isActive = true;
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m_beginFormEditorItem = topFormEditorItem(QDeclarativeDesignViewPrivate::get(m_editorView)->selectableItems(beginPoint));
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m_oldSelectionList = m_editorView->selectedItems();
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}
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void RubberBandSelectionManipulator::update(const QPointF& updatePoint)
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{
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m_selectionRectangleElement.setRect(m_beginPoint, updatePoint);
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}
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void RubberBandSelectionManipulator::end()
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{
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m_oldSelectionList.clear();
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m_selectionRectangleElement.hide();
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m_isActive = false;
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}
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void RubberBandSelectionManipulator::select(SelectionType selectionType)
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{
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QList<QGraphicsItem*> itemList = QDeclarativeDesignViewPrivate::get(m_editorView)->selectableItems(m_selectionRectangleElement.rect(),
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Qt::IntersectsItemShape);
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QList<QGraphicsItem*> newSelectionList;
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foreach (QGraphicsItem* item, itemList) {
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if (item
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&& item->parentItem()
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&& !newSelectionList.contains(item)
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//&& m_beginFormEditorItem->childItems().contains(item) // TODO activate this test
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)
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{
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newSelectionList.append(item);
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}
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}
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if (newSelectionList.isEmpty() && m_beginFormEditorItem)
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newSelectionList.append(m_beginFormEditorItem);
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QList<QGraphicsItem*> resultList;
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switch(selectionType) {
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case AddToSelection: {
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resultList.append(m_oldSelectionList);
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resultList.append(newSelectionList);
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}
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break;
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case ReplaceSelection: {
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resultList.append(newSelectionList);
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}
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break;
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case RemoveFromSelection: {
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QSet<QGraphicsItem*> oldSelectionSet(m_oldSelectionList.toSet());
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QSet<QGraphicsItem*> newSelectionSet(newSelectionList.toSet());
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resultList.append(oldSelectionSet.subtract(newSelectionSet).toList());
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}
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}
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m_editorView->setSelectedItems(resultList);
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}
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void RubberBandSelectionManipulator::setItems(const QList<QGraphicsItem*> &itemList)
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{
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m_itemList = itemList;
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}
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QPointF RubberBandSelectionManipulator::beginPoint() const
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{
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return m_beginPoint;
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}
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bool RubberBandSelectionManipulator::isActive() const
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{
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return m_isActive;
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}
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}
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