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Diffstat (limited to 'src/datavisualization/data/qitemmodelsurfacedatamapping.cpp')
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diff --git a/src/datavisualization/data/qitemmodelsurfacedatamapping.cpp b/src/datavisualization/data/qitemmodelsurfacedatamapping.cpp new file mode 100644 index 00000000..5388ec18 --- /dev/null +++ b/src/datavisualization/data/qitemmodelsurfacedatamapping.cpp @@ -0,0 +1,411 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc +** All rights reserved. +** For any questions to Digia, please use contact form at http://qt.digia.com +** +** This file is part of the QtDataVisualization module. +** +** Licensees holding valid Qt Enterprise licenses may use this file in +** accordance with the Qt Enterprise License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. +** +** If you have questions regarding the use of this file, please use +** contact form at http://qt.digia.com +** +****************************************************************************/ + +#include "qitemmodelsurfacedatamapping_p.h" + +QT_DATAVISUALIZATION_BEGIN_NAMESPACE + +/*! + * \class QItemModelSurfaceDataMapping + * \inmodule QtDataVisualization + * \brief Item model mapping for Q3DSurface. + * \since 1.0.0 + * + * QItemModelSurfaceDataMapping is used to map roles of QAbstractItemModel to rows, columns, and values + * of Q3DSurface. There are three ways to use QItemModelSurfaceDataMapping: + * + * 1) If useModelCategories property is set to true, QItemModelSurfaceDataMapping will map rows and + * columns of QAbstractItemModel to rows and columns of Q3DSurface, and uses the value returned for + * Qt::DisplayRole as bar value by default. + * The value role to be used can be redefined if Qt::DisplayRole is not suitable. + * + * 2) For models that do not have data already neatly sorted into rows and columns, such as + * QAbstractListModel based models, you can define a role from the model to map for each of row, + * column and value. + * + * 3) If you do not want to include all data contained in the model, or the autogenerated rows and + * columns are not ordered as you wish, you can specify which rows and columns should be included + * and in which order by defining an explicit list of categories for either or both of rows and + * columns. + * + * For example, assume that you have a custom QAbstractItemModel storing surface topography data. + * Each item in the model has roles "longitude", "latitude" and "height". The item model already + * contains the data properly sorted so that longitudes and latitudes are first encountered in + * correct order, which enables us to utilize the row and column category autogeneration. + * You could do the following to display the data in a surface graph: + * + * \snippet doc_src_qtdatavisualization.cpp 5 + * + * \sa QItemModelSurfaceDataProxy, {Qt Data Visualization Data Handling} + */ + +/*! + * \qmltype SurfaceDataMapping + * \inqmlmodule com.digia.QtDataVisualization 1.0 + * \since com.digia.QtDataVisualization 1.0 + * \ingroup datavisualization_qml + * \instantiates QItemModelSurfaceDataMapping + * \brief Item model mapping for Surface3D. + * + * This type is used to map roles of AbstractItemModel to rows, columns, and values of Surface3D. + * For more complete description, see QItemModelSurfaceDataMapping. + * + * Usage example: + * + * \snippet doc_src_qmldatavisualization.cpp 6 + * + * \sa ItemModelSurfaceDataProxy, {Qt Data Visualization Data Handling} + */ + +/*! + * \qmlproperty string SurfaceDataMapping::rowRole + * The row role of the mapping. + */ + +/*! + * \qmlproperty string SurfaceDataMapping::columnRole + * The column role of the mapping. + */ + +/*! + * \qmlproperty string SurfaceDataMapping::valueRole + * The value role of the mapping. + */ + +/*! + * \qmlproperty list SurfaceDataMapping::rowCategories + * The row categories of the mapping. Only items with row roles that are found in this list are + * included when data is resolved. The rows are ordered in the same order as they are in this list. + */ + +/*! + * \qmlproperty list SurfaceDataMapping::columnCategories + * The column categories of the mapping. Only items with column roles that are found in this list are + * included when data is resolved. The columns are ordered in the same order as they are in this list. + */ + +/*! + * \qmlproperty list SurfaceDataMapping::useModelCategories + * When set to true, the mapping ignores row and column roles and categories, and uses + * the rows and columns from the model instead. Defaults to false. + */ + +/*! + * \qmlproperty list SurfaceDataMapping::autoRowCategories + * When set to true, the mapping ignores any explicitly set row categories + * and overwrites them with automatically generated ones whenever the + * data from model is resolved. Proxy minimum and maximum row values are also + * autogenerated from data when this is set to true. Defaults to true. + */ + +/*! + * \qmlproperty list SurfaceDataMapping::autoColumnCategories + * When set to true, the mapping ignores any explicitly set column categories + * and overwrites them with automatically generated ones whenever the + * data from model is resolved. Proxy minimum and maximum column values are also + * autogenerated from data when this is set to true. Defaults to true. + */ + +/*! + * Constructs QItemModelSurfaceDataMapping with the given \a parent. + */ +QItemModelSurfaceDataMapping::QItemModelSurfaceDataMapping(QObject *parent) + : QAbstractDataMapping(new QItemModelSurfaceDataMappingPrivate(this), parent) +{ +} + +/*! + * Constructs QItemModelSurfaceDataMapping with \a valueRole and the given \a parent. + * This constructor is meant to be used with models that have data properly sorted + * in rows and columns already, so it also sets useModelCategories property to true. + */ +QItemModelSurfaceDataMapping::QItemModelSurfaceDataMapping(const QString &valueRole, QObject *parent) + : QAbstractDataMapping(new QItemModelSurfaceDataMappingPrivate(this), parent) +{ + dptr()->m_valueRole = valueRole; + dptr()->m_useModelCategories = true; +} + +/*! + * Constructs QItemModelSurfaceDataMapping with \a rowRole, \a columnRole, \a valueRole + * and the given \a parent. + */ +QItemModelSurfaceDataMapping::QItemModelSurfaceDataMapping(const QString &rowRole, + const QString &columnRole, + const QString &valueRole, + QObject *parent) + : QAbstractDataMapping(new QItemModelSurfaceDataMappingPrivate(this), parent) +{ + dptr()->m_rowRole = rowRole; + dptr()->m_columnRole = columnRole; + dptr()->m_valueRole = valueRole; +} + +/*! + * Constructs QItemModelSurfaceDataMapping with \a rowRole, \a columnRole, \a valueRole, + * \a rowCategories, \a columnCategories and the given \a parent. This constructor + * also sets autoRowCategories and autoColumnCategories to false. + */ +QItemModelSurfaceDataMapping::QItemModelSurfaceDataMapping(const QString &rowRole, + const QString &columnRole, + const QString &valueRole, + const QStringList &rowCategories, + const QStringList &columnCategories, + QObject *parent) + : QAbstractDataMapping(new QItemModelSurfaceDataMappingPrivate(this), parent) +{ + dptr()->m_rowRole = rowRole; + dptr()->m_columnRole = columnRole; + dptr()->m_valueRole = valueRole; + dptr()->m_rowCategories = rowCategories; + dptr()->m_columnCategories = columnCategories; + dptr()->m_autoRowCategories = false; + dptr()->m_autoColumnCategories = false; +} + +/*! + * Destroys QItemModelSurfaceDataMapping. + */ +QItemModelSurfaceDataMapping::~QItemModelSurfaceDataMapping() +{ +} + +/*! + * \property QItemModelSurfaceDataMapping::rowRole + * + * Defines the row role for the mapping. + */ +void QItemModelSurfaceDataMapping::setRowRole(const QString &role) +{ + if (dptr()->m_rowRole != role) { + dptr()->m_rowRole = role; + emit mappingChanged(); + } +} + +QString QItemModelSurfaceDataMapping::rowRole() const +{ + return dptrc()->m_rowRole; +} + +/*! + * \property QItemModelSurfaceDataMapping::columnRole + * + * Defines the column role for the mapping. + */ +void QItemModelSurfaceDataMapping::setColumnRole(const QString &role) +{ + if (dptr()->m_columnRole != role) { + dptr()->m_columnRole = role; + emit mappingChanged(); + } +} + +QString QItemModelSurfaceDataMapping::columnRole() const +{ + return dptrc()->m_columnRole; +} + +/*! + * \property QItemModelSurfaceDataMapping::valueRole + * + * Defines the value role for the mapping. + */ +void QItemModelSurfaceDataMapping::setValueRole(const QString &role) +{ + if (dptr()->m_valueRole != role) { + dptr()->m_valueRole = role; + emit mappingChanged(); + } +} + +QString QItemModelSurfaceDataMapping::valueRole() const +{ + return dptrc()->m_valueRole; +} + +/*! + * \property QItemModelSurfaceDataMapping::rowCategories + * + * Defines the row categories for the mapping. + */ +void QItemModelSurfaceDataMapping::setRowCategories(const QStringList &categories) +{ + if (dptr()->m_rowCategories != categories) { + dptr()->m_rowCategories = categories; + emit mappingChanged(); + } +} + +QStringList QItemModelSurfaceDataMapping::rowCategories() const +{ + return dptrc()->m_rowCategories; +} + +/*! + * \property QItemModelSurfaceDataMapping::columnCategories + * + * Defines the column categories for the mapping. + */ +void QItemModelSurfaceDataMapping::setColumnCategories(const QStringList &categories) +{ + if (dptr()->m_columnCategories != categories) { + dptr()->m_columnCategories = categories; + emit mappingChanged(); + } +} + +QStringList QItemModelSurfaceDataMapping::columnCategories() const +{ + return dptrc()->m_columnCategories; +} + +/*! + * \property QItemModelSurfaceDataMapping::useModelCategories + * + * When set to true, the mapping ignores row and column roles and categories, and uses + * the rows and columns from the model instead. Defaults to false. + */ +void QItemModelSurfaceDataMapping::setUseModelCategories(bool enable) +{ + if (dptr()->m_useModelCategories != enable) { + dptr()->m_useModelCategories = enable; + emit mappingChanged(); + } +} + +bool QItemModelSurfaceDataMapping::useModelCategories() const +{ + return dptrc()->m_useModelCategories; +} + +/*! + * \property QItemModelSurfaceDataMapping::autoRowCategories + * + * When set to true, the mapping ignores any explicitly set row categories + * and overwrites them with automatically generated ones whenever the + * data from model is resolved. Proxy minimum and maximum row values are also + * autogenerated from data when this is set to true. Defaults to true. + */ +void QItemModelSurfaceDataMapping::setAutoRowCategories(bool enable) +{ + if (dptr()->m_autoRowCategories != enable) { + dptr()->m_autoRowCategories = enable; + emit mappingChanged(); + } +} + +bool QItemModelSurfaceDataMapping::autoRowCategories() const +{ + return dptrc()->m_autoRowCategories; +} + +/*! + * \property QItemModelSurfaceDataMapping::autoColumnCategories + * + * When set to true, the mapping ignores any explicitly set column categories + * and overwrites them with automatically generated ones whenever the + * data from model is resolved. Proxy minimum and maximum column values are also + * autogenerated from data when this is set to true. Defaults to true. + */ +void QItemModelSurfaceDataMapping::setAutoColumnCategories(bool enable) +{ + if (dptr()->m_autoColumnCategories != enable) { + dptr()->m_autoColumnCategories = enable; + emit mappingChanged(); + } +} + +bool QItemModelSurfaceDataMapping::autoColumnCategories() const +{ + return dptrc()->m_autoColumnCategories; +} + +/*! + * Changes \a rowRole, \a columnRole, \a valueRole, \a rowCategories and \a columnCategories to the + * mapping. + */ +void QItemModelSurfaceDataMapping::remap(const QString &rowRole, + const QString &columnRole, + const QString &valueRole, + const QStringList &rowCategories, + const QStringList &columnCategories) +{ + dptr()->m_rowRole = rowRole; + dptr()->m_columnRole = columnRole; + dptr()->m_valueRole = valueRole; + dptr()->m_rowCategories = rowCategories; + dptr()->m_columnCategories = columnCategories; + + emit mappingChanged(); +} + +/*! + * /return index of the specified \a category in row categories list. + * If the row categories list is empty, -1 is returned. + * \note If the automatic row categories generation is in use, this method will + * not return valid index before the data in the model is resolved for the first time. + */ +int QItemModelSurfaceDataMapping::rowCategoryIndex(const QString &category) +{ + return dptr()->m_rowCategories.indexOf(category); +} + +/*! + * /return index of the specified \a category in column categories list. + * \note If the automatic column categories generation is in use, this method will + * not return valid index before the data in the model is resolved for the first time. + */ +int QItemModelSurfaceDataMapping::columnCategoryIndex(const QString &category) +{ + return dptr()->m_columnCategories.indexOf(category); +} + +/*! + * \internal + */ +QItemModelSurfaceDataMappingPrivate *QItemModelSurfaceDataMapping::dptr() +{ + return static_cast<QItemModelSurfaceDataMappingPrivate *>(d_ptr.data()); +} + +/*! + * \internal + */ +const QItemModelSurfaceDataMappingPrivate *QItemModelSurfaceDataMapping::dptrc() const +{ + return static_cast<const QItemModelSurfaceDataMappingPrivate *>(d_ptr.data()); +} + +// QItemModelSurfaceDataMappingPrivate + +QItemModelSurfaceDataMappingPrivate::QItemModelSurfaceDataMappingPrivate(QItemModelSurfaceDataMapping *q) + : QAbstractDataMappingPrivate(q, QAbstractDataProxy::DataTypeSurface), + m_useModelCategories(false), + m_autoRowCategories(true), + m_autoColumnCategories(true) +{ +} + +QItemModelSurfaceDataMappingPrivate::~QItemModelSurfaceDataMappingPrivate() +{ +} + + +QT_DATAVISUALIZATION_END_NAMESPACE + |