diff options
Diffstat (limited to 'src/plugins/qdeclarativemodules/widgets/graphicslayouts.cpp')
-rw-r--r-- | src/plugins/qdeclarativemodules/widgets/graphicslayouts.cpp | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/src/plugins/qdeclarativemodules/widgets/graphicslayouts.cpp b/src/plugins/qdeclarativemodules/widgets/graphicslayouts.cpp new file mode 100644 index 0000000..fc15ad2 --- /dev/null +++ b/src/plugins/qdeclarativemodules/widgets/graphicslayouts.cpp @@ -0,0 +1,260 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "graphicslayouts_p.h" + +#include <QtGui/qgraphicswidget.h> +#include <QtCore/qdebug.h> + +QT_BEGIN_NAMESPACE + +LinearLayoutAttached::LinearLayoutAttached(QObject *parent) +: QObject(parent), _stretch(1), _alignment(Qt::AlignCenter) +{ +} + +void LinearLayoutAttached::setStretchFactor(int f) +{ + if (_stretch == f) + return; + + _stretch = f; + emit stretchChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _stretch); +} + +void LinearLayoutAttached::setAlignment(Qt::Alignment a) +{ + if (_alignment == a) + return; + + _alignment = a; + emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _alignment); +} + +QGraphicsLinearLayoutStretchItemObject::QGraphicsLinearLayoutStretchItemObject(QObject *parent) + : QObject(parent) +{ +} + +QSizeF QGraphicsLinearLayoutStretchItemObject::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const +{ +Q_UNUSED(which); +Q_UNUSED(constraint); +return QSizeF(); +} + + +QGraphicsLinearLayoutObject::QGraphicsLinearLayoutObject(QObject *parent) +: QObject(parent) +{ +} + +QGraphicsLinearLayoutObject::~QGraphicsLinearLayoutObject() +{ +} + +void QGraphicsLinearLayoutObject::insertLayoutItem(int index, QGraphicsLayoutItem *item) +{ +insertItem(index, item); + +//connect attached properties +if (LinearLayoutAttached *obj = attachedProperties.value(item)) { + setStretchFactor(item, obj->stretchFactor()); + setAlignment(item, obj->alignment()); + QObject::connect(obj, SIGNAL(stretchChanged(QGraphicsLayoutItem*,int)), + this, SLOT(updateStretch(QGraphicsLayoutItem*,int))); + QObject::connect(obj, SIGNAL(alignmentChanged(QGraphicsLayoutItem*,Qt::Alignment)), + this, SLOT(updateAlignment(QGraphicsLayoutItem*,Qt::Alignment))); + //### need to disconnect when widget is removed? +} +} + +//### is there a better way to do this? +void QGraphicsLinearLayoutObject::clearChildren() +{ +for (int i = 0; i < count(); ++i) + removeAt(i); +} + +void QGraphicsLinearLayoutObject::updateStretch(QGraphicsLayoutItem *item, int stretch) +{ +QGraphicsLinearLayout::setStretchFactor(item, stretch); +} + +void QGraphicsLinearLayoutObject::updateAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment) +{ +QGraphicsLinearLayout::setAlignment(item, alignment); +} + +QHash<QGraphicsLayoutItem*, LinearLayoutAttached*> QGraphicsLinearLayoutObject::attachedProperties; +LinearLayoutAttached *QGraphicsLinearLayoutObject::qmlAttachedProperties(QObject *obj) +{ +// ### This is not allowed - you must attach to any object +if (!qobject_cast<QGraphicsLayoutItem*>(obj)) + return 0; +LinearLayoutAttached *rv = new LinearLayoutAttached(obj); +attachedProperties.insert(qobject_cast<QGraphicsLayoutItem*>(obj), rv); +return rv; +} + +////////////////////////////////////////////////////////////////////////////////////////////////////// +// QGraphicsGridLayout-related classes +////////////////////////////////////////////////////////////////////////////////////////////////////// +GridLayoutAttached::GridLayoutAttached(QObject *parent) +: QObject(parent), _row(-1), _column(-1), _rowspan(1), _colspan(1), _alignment(-1) +{ +} + +void GridLayoutAttached::setRow(int r) +{ + if (_row == r) + return; + + _row = r; + //emit rowChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _row); +} + +void GridLayoutAttached::setColumn(int c) +{ + if (_column == c) + return; + + _column = c; + //emit columnChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _column); +} + +void GridLayoutAttached::setRowSpan(int rs) +{ + if (_rowspan == rs) + return; + + _rowspan = rs; + //emit rowSpanChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _rowSpan); +} + +void GridLayoutAttached::setColumnSpan(int cs) +{ + if (_colspan == cs) + return; + + _colspan = cs; + //emit columnSpanChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _columnSpan); +} + +void GridLayoutAttached::setAlignment(Qt::Alignment a) +{ + if (_alignment == a) + return; + + _alignment = a; + //emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _alignment); +} + +QGraphicsGridLayoutObject::QGraphicsGridLayoutObject(QObject *parent) +: QObject(parent) +{ +} + +QGraphicsGridLayoutObject::~QGraphicsGridLayoutObject() +{ +} + +void QGraphicsGridLayoutObject::addWidget(QGraphicsWidget *wid) +{ +//use attached properties +if (QObject *obj = attachedProperties.value(qobject_cast<QGraphicsLayoutItem*>(wid))) { + int row = static_cast<GridLayoutAttached *>(obj)->row(); + int column = static_cast<GridLayoutAttached *>(obj)->column(); + int rowSpan = static_cast<GridLayoutAttached *>(obj)->rowSpan(); + int columnSpan = static_cast<GridLayoutAttached *>(obj)->columnSpan(); + if (row == -1 || column == -1) { + qWarning() << "Must set row and column for an item in a grid layout"; + return; + } + addItem(wid, row, column, rowSpan, columnSpan); +} +} + +void QGraphicsGridLayoutObject::addLayoutItem(QGraphicsLayoutItem *item) +{ +//use attached properties +if (GridLayoutAttached *obj = attachedProperties.value(item)) { + int row = obj->row(); + int column = obj->column(); + int rowSpan = obj->rowSpan(); + int columnSpan = obj->columnSpan(); + Qt::Alignment alignment = obj->alignment(); + if (row == -1 || column == -1) { + qWarning() << "Must set row and column for an item in a grid layout"; + return; + } + addItem(item, row, column, rowSpan, columnSpan); + if (alignment != -1) + setAlignment(item,alignment); +} +} + +//### is there a better way to do this? +void QGraphicsGridLayoutObject::clearChildren() +{ +for (int i = 0; i < count(); ++i) + removeAt(i); +} + +qreal QGraphicsGridLayoutObject::spacing() const +{ +if (verticalSpacing() == horizontalSpacing()) + return verticalSpacing(); +return -1; //### +} + +QHash<QGraphicsLayoutItem*, GridLayoutAttached*> QGraphicsGridLayoutObject::attachedProperties; +GridLayoutAttached *QGraphicsGridLayoutObject::qmlAttachedProperties(QObject *obj) +{ +// ### This is not allowed - you must attach to any object +if (!qobject_cast<QGraphicsLayoutItem*>(obj)) + return 0; +GridLayoutAttached *rv = new GridLayoutAttached(obj); +attachedProperties.insert(qobject_cast<QGraphicsLayoutItem*>(obj), rv); +return rv; +} + +QT_END_NAMESPACE |