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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "snappinglinecreator.h"
#include <QGraphicsItem>
#include "onedimensionalcluster.h"
#include "formeditoritem.h"
#include "formeditorview.h"
namespace QmlDesigner {
SnappingLineCreator::SnappingLineCreator(FormEditorItem *formEditorItem)
: m_formEditorItem(formEditorItem),
m_topOffset(formEditorItem->formEditorView()->spacing()),
m_bottomOffset(formEditorItem->formEditorView()->spacing()),
m_leftOffset(formEditorItem->formEditorView()->spacing()),
m_rightOffset(formEditorItem->formEditorView()->spacing()),
m_topMargin(formEditorItem->formEditorView()->margins()),
m_bottomMargin(formEditorItem->formEditorView()->margins()),
m_leftMargin(formEditorItem->formEditorView()->margins()),
m_rightMargin(formEditorItem->formEditorView()->margins())
{
Q_ASSERT(m_formEditorItem);
}
void SnappingLineCreator::clearLines()
{
m_topLineMap.clear();
m_bottomLineMap.clear();
m_leftLineMap.clear();
m_rightLineMap.clear();
m_horizontalCenterLineMap.clear();
m_verticalCenterLineMap.clear();
m_topOffsetMap.clear();
m_bottomOffsetMap.clear();
m_leftOffsetMap.clear();
m_rightOffsetMap.clear();
}
void SnappingLineCreator::addLines(const QRectF &rectInSceneSpace, FormEditorItem *item)
{
m_topLineMap.insert(rectInSceneSpace.top(), qMakePair(rectInSceneSpace, item));
m_bottomLineMap.insert(rectInSceneSpace.bottom(), qMakePair(rectInSceneSpace, item));
m_leftLineMap.insert(rectInSceneSpace.left(), qMakePair(rectInSceneSpace, item));
m_rightLineMap.insert(rectInSceneSpace.right(), qMakePair(rectInSceneSpace, item));
QPointF centerPoint(rectInSceneSpace.center());
m_horizontalCenterLineMap.insert(centerPoint.y(), qMakePair(rectInSceneSpace, item));
m_verticalCenterLineMap.insert(centerPoint.x(), qMakePair(rectInSceneSpace, item));
}
void SnappingLineCreator::addOffsets(const QRectF &rectInSceneSpace, FormEditorItem *item)
{
m_topOffsetMap.insert(rectInSceneSpace.top() - m_topOffset, qMakePair(rectInSceneSpace, item));
m_bottomOffsetMap.insert(rectInSceneSpace.bottom() + m_bottomOffset, qMakePair(rectInSceneSpace, item));
m_leftOffsetMap.insert(rectInSceneSpace.left() - m_leftOffset, qMakePair(rectInSceneSpace, item));
m_rightOffsetMap.insert(rectInSceneSpace.right() + m_rightOffset, qMakePair(rectInSceneSpace, item));
}
void SnappingLineCreator::generateLines(const QList<FormEditorItem*> &exceptionList,
FormEditorItem *transformationSpaceItem)
{
if (!m_formEditorItem->qmlItemNode().isValid())
return;
Q_ASSERT(transformationSpaceItem);
{
QRectF containerBoundingRectInTransformationSpace = m_formEditorItem->mapRectToItem(transformationSpaceItem,
m_formEditorItem->qmlItemNode().instanceBoundingRect());
addLines(containerBoundingRectInTransformationSpace, m_formEditorItem);
containerBoundingRectInTransformationSpace.adjust(m_leftMargin, m_topMargin, -m_rightMargin, -m_rightMargin);
addLines(containerBoundingRectInTransformationSpace, m_formEditorItem);
}
foreach (FormEditorItem *item, m_formEditorItem->childFormEditorItems()) {
if (!item || !item->qmlItemNode().isValid())
continue;
if (exceptionList.contains(item))
continue;
QRectF boundingRectInContainerSpace;
boundingRectInContainerSpace = item->mapRectToItem(transformationSpaceItem, item->qmlItemNode().instanceBoundingRect());
boundingRectInContainerSpace = boundingRectInContainerSpace.toRect(); // round to integer
addLines(boundingRectInContainerSpace, item);
addOffsets(boundingRectInContainerSpace, item);
}
}
void SnappingLineCreator::setMargins(double margin)
{
m_topMargin = margin;
m_bottomMargin = margin;
m_leftMargin = margin;
m_rightMargin = margin;
}
void SnappingLineCreator::setSpacing(double spacing)
{
m_topOffset = spacing;
m_bottomOffset = spacing;
m_leftOffset = spacing;
m_rightOffset = spacing;
}
void SnappingLineCreator::update(const QList<FormEditorItem*> &exceptionList,
FormEditorItem *transformationSpaceItem)
{
clearLines();
setMargins(m_formEditorItem->formEditorView()->margins());
setSpacing(m_formEditorItem->formEditorView()->spacing());
generateLines(exceptionList, transformationSpaceItem);
}
SnapLineMap SnappingLineCreator::topLines() const
{
return m_topLineMap;
}
SnapLineMap SnappingLineCreator::bottomLines() const
{
return m_bottomLineMap;
}
SnapLineMap SnappingLineCreator::leftLines() const
{
return m_leftLineMap;
}
SnapLineMap SnappingLineCreator::rightLines() const
{
return m_rightLineMap;
}
SnapLineMap SnappingLineCreator::horizontalCenterLines() const
{
return m_horizontalCenterLineMap;
}
SnapLineMap SnappingLineCreator::verticalCenterLines() const
{
return m_verticalCenterLineMap;
}
SnapLineMap SnappingLineCreator::topOffsets() const
{
return m_topOffsetMap;
}
SnapLineMap SnappingLineCreator::bottomOffsets() const
{
return m_bottomOffsetMap;
}
SnapLineMap SnappingLineCreator::leftOffsets() const
{
return m_leftOffsetMap;
}
SnapLineMap SnappingLineCreator::rightOffsets() const
{
return m_rightOffsetMap;
}
}
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