HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r1406:0f4e8d578ad7

Minor updates to barModelMapper example and its docs

Marek Rosa -

r1406:0f4e8d578ad7

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doc/src/examples-barmodelmapper.qdoc +2 -2

             /*!
                  \example examples/barmodelmapper
                  \title BarModelMapper example
                  \subtitle
                  This example shows how to use QAbstractItemModel derived model as the data for the bar series.
                  \image examples_barmodelmapper.png
                  Let's start by creating an instance of CustomTableModel class.
                  CustomTableModel class is derived from QAbstractTableModel and it was created for the purpose of this example.
                  The constructor of this class populates the internal data store of the model with the data that is good for our chart example.
                  \snippet ../examples/barmodelmapper/tablewidget.cpp 1
                  We now have a model with data that we would like to display both on the chart and in a QTableView.
                  First, we create QTableView and tell it use the model as a data source. To have the data presented nicely the minimum width of the table view is set and its headers resize mode changed to stretch.
                  \snippet ../examples/barmodelmapper/tablewidget.cpp 2
                  Now we need QChart instance to display the same data on the chart.
                  We also enable animations. It makes it easier to see how modifying the model's data affect the chart.
                  \snippet ../examples/barmodelmapper/tablewidget.cpp 3
                  First line of the code below creates new grouped bar series. Variables firstRow and rowCount are used to define a custom model mapping.
                  Custom mapping allows to take only part of the data from the model. In this case data from 5 rows starting with the row with the index 3.
-                 Following three lines create an instance of QVBarModelMapper class and specifie that data for the bar sets should be taken from the model's columns(Qt::Vertical) with indexes from 1 to 4(inclusive).
+                 Following three lines create an instance of QVBarModelMapper class and specifie that data for the bar sets should be taken from the model's columns with indexes from 1 to 4(inclusive).
                  To create a connection between the series and the model we set both of those objects to QVBarModelMapper.
                  Finally the series is added to the chart.
                  \snippet ../examples/barmodelmapper/tablewidget.cpp 4
-                 To show in QTableView which data coresponds with which series this example uses table coloring.
+                 To show in QTableView which data coresponds with which bar set this example uses table coloring.
                  When series is added to the chart it is assigned a color beased on the currently selected theme.
                  Code below extracts that color from the series and uses it to create colored QTableView.
                  Coloring of the view is not a part of the QChart functionality.
                  \snippet ../examples/barmodelmapper/tablewidget.cpp 5
                  We would like to have categories placed on the chart's axis that describe what the data means.
                  Next snippet shows how to do that.
                  \snippet ../examples/barmodelmapper/tablewidget.cpp 6
                  To avoid setting up the QGraphicsScene we use QChartView class that does it for us. QChart object pointer is used as a parameter of the QChartView constructor.
                  To make the render look nicer Antialiasing is turned on and the minimum size of the chartView widget is set.
                  \snippet ../examples/barmodelmapper/tablewidget.cpp 7
                  Finally we place both widgets in a layout and use the layout as the application layout.
                  \snippet ../examples/barmodelmapper/tablewidget.cpp 8
                  Application is ready. Try modifying the data in the table view and see how it affects the chart.
             */

examples/barmodelmapper/tablewidget.cpp +1 -1

             /****************************************************************************
             **
             ** Copyright (C) 2012 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 Qt Commercial Charts Add-on.
             **
             ** $QT_BEGIN_LICENSE$
             ** Licensees holding valid Qt Commercial licenses may use this file in
             ** accordance with the Qt Commercial 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
             ** $QT_END_LICENSE$
             **
             ****************************************************************************/
             #include "tablewidget.h"
             #include "customtablemodel.h"
             #include <QGridLayout>
             #include <QTableView>
             #include <QChart>
             #include <QChartView>
             #include <QLineSeries>
             #include <QVXYModelMapper>
             #include <QGroupedBarSeries>
             #include <QBarSet>
             #include <QVBarModelMapper>
             #include <QHeaderView>
             QTCOMMERCIALCHART_USE_NAMESPACE
             TableWidget::TableWidget(QWidget *parent)
                 : QWidget(parent)
             {
                 // create simple model for storing data
                 // user's table data model
                 //! [1]
                 CustomTableModel *model = new CustomTableModel;
                 //! [1]
                 //! [2]
                 // create table view and add model to it
                 QTableView *tableView = new QTableView;
                 tableView->setModel(model);
                 tableView->setMinimumWidth(300);
                 tableView->horizontalHeader()->setResizeMode(QHeaderView::Stretch);
                 tableView->verticalHeader()->setResizeMode(QHeaderView::Stretch);
                 //! [2]
                 //! [3]
                 QChart *chart = new QChart;
                 chart->setAnimationOptions(QChart::AllAnimations);
                 //! [3]
                 // series 1
                 //! [4]
                 QGroupedBarSeries *series = new QGroupedBarSeries;
                 int first = 3;
                 int count = 5;
                 QVBarModelMapper *mapper = new QVBarModelMapper(this);
                 mapper->setFirstBarSetColumn(1);
                 mapper->setLastBarSetColumn(4);
-                mapper->setFirst(3);
+                mapper->setFirst(first);
                 mapper->setCount(count);
                 mapper->setSeries(series);
                 mapper->setModel(model);
                 chart->addSeries(series);
                 //! [4]
                 //! [5]
                 // for storing color hex from the series
                 QString seriesColorHex = "#000000";
                 // get the color of the series and use it for showing the mapped area
                 QList<QBarSet*> barsets = series->barSets();
                 for (int i = 0; i < barsets.count(); i++) {
                     seriesColorHex = "#" + QString::number(barsets.at(i)->brush().color().rgb(), 16).right(6).toUpper();
                     model->addMapping(seriesColorHex, QRect(1 + i, first, 1, barsets.at(i)->count()));
                 }
                 //! [5]
                 //! [6]
                 QStringList categories;
                 categories << "April" << "May" << "June" << "July" << "August";
                 chart->axisX()->categories()->insert(categories);
                 //! [6]
                 //! [7]
                 QChartView *chartView = new QChartView(chart);
                 chartView->setRenderHint(QPainter::Antialiasing);
                 chartView->setMinimumSize(640, 480);
                 //! [7]
                 //! [8]
                 // create main layout
                 QGridLayout* mainLayout = new QGridLayout;
                 mainLayout->addWidget(tableView, 1, 0);
                 mainLayout->addWidget(chartView, 1, 1);
                 mainLayout->setColumnStretch(1, 1);
                 mainLayout->setColumnStretch(0, 0);
                 setLayout(mainLayout);
                 //! [8]
             }

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