source: trunk/examples/itemviews/chart/mainwindow.cpp@ 846

Last change on this file since 846 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 6.1 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
6**
7** This file is part of the examples of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:BSD$
10** You may use this file under the terms of the BSD license as follows:
11**
12** "Redistribution and use in source and binary forms, with or without
13** modification, are permitted provided that the following conditions are
14** met:
15** * Redistributions of source code must retain the above copyright
16** notice, this list of conditions and the following disclaimer.
17** * Redistributions in binary form must reproduce the above copyright
18** notice, this list of conditions and the following disclaimer in
19** the documentation and/or other materials provided with the
20** distribution.
21** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22** the names of its contributors may be used to endorse or promote
23** products derived from this software without specific prior written
24** permission.
25**
26** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41#include <QtGui>
42
43#include "pieview.h"
44#include "mainwindow.h"
45
46MainWindow::MainWindow()
47{
48 QMenu *fileMenu = new QMenu(tr("&File"), this);
49 QAction *openAction = fileMenu->addAction(tr("&Open..."));
50 openAction->setShortcuts(QKeySequence::Open);
51 QAction *saveAction = fileMenu->addAction(tr("&Save As..."));
52 saveAction->setShortcuts(QKeySequence::SaveAs);
53 QAction *quitAction = fileMenu->addAction(tr("E&xit"));
54 quitAction->setShortcuts(QKeySequence::Quit);
55
56 setupModel();
57 setupViews();
58
59 connect(openAction, SIGNAL(triggered()), this, SLOT(openFile()));
60 connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));
61 connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
62
63 menuBar()->addMenu(fileMenu);
64 statusBar();
65
66 openFile(":/Charts/qtdata.cht");
67
68 setWindowTitle(tr("Chart"));
69 resize(870, 550);
70}
71
72void MainWindow::setupModel()
73{
74 model = new QStandardItemModel(8, 2, this);
75 model->setHeaderData(0, Qt::Horizontal, tr("Label"));
76 model->setHeaderData(1, Qt::Horizontal, tr("Quantity"));
77}
78
79void MainWindow::setupViews()
80{
81 QSplitter *splitter = new QSplitter;
82 QTableView *table = new QTableView;
83 pieChart = new PieView;
84 splitter->addWidget(table);
85 splitter->addWidget(pieChart);
86 splitter->setStretchFactor(0, 0);
87 splitter->setStretchFactor(1, 1);
88
89 table->setModel(model);
90 pieChart->setModel(model);
91
92 QItemSelectionModel *selectionModel = new QItemSelectionModel(model);
93 table->setSelectionModel(selectionModel);
94 pieChart->setSelectionModel(selectionModel);
95
96 QHeaderView *headerView = table->horizontalHeader();
97 headerView->setStretchLastSection(true);
98
99 setCentralWidget(splitter);
100}
101
102void MainWindow::openFile(const QString &path)
103{
104 QString fileName;
105 if (path.isNull())
106 fileName = QFileDialog::getOpenFileName(this, tr("Choose a data file"),
107 "", "*.cht");
108 else
109 fileName = path;
110
111 if (!fileName.isEmpty()) {
112 QFile file(fileName);
113
114 if (file.open(QFile::ReadOnly | QFile::Text)) {
115 QTextStream stream(&file);
116 QString line;
117
118 model->removeRows(0, model->rowCount(QModelIndex()), QModelIndex());
119
120 int row = 0;
121 do {
122 line = stream.readLine();
123 if (!line.isEmpty()) {
124
125 model->insertRows(row, 1, QModelIndex());
126
127 QStringList pieces = line.split(",", QString::SkipEmptyParts);
128 model->setData(model->index(row, 0, QModelIndex()),
129 pieces.value(0));
130 model->setData(model->index(row, 1, QModelIndex()),
131 pieces.value(1));
132 model->setData(model->index(row, 0, QModelIndex()),
133 QColor(pieces.value(2)), Qt::DecorationRole);
134 row++;
135 }
136 } while (!line.isEmpty());
137
138 file.close();
139 statusBar()->showMessage(tr("Loaded %1").arg(fileName), 2000);
140 }
141 }
142}
143
144void MainWindow::saveFile()
145{
146 QString fileName = QFileDialog::getSaveFileName(this,
147 tr("Save file as"), "", "*.cht");
148
149 if (!fileName.isEmpty()) {
150 QFile file(fileName);
151 QTextStream stream(&file);
152
153 if (file.open(QFile::WriteOnly | QFile::Text)) {
154 for (int row = 0; row < model->rowCount(QModelIndex()); ++row) {
155
156 QStringList pieces;
157
158 pieces.append(model->data(model->index(row, 0, QModelIndex()),
159 Qt::DisplayRole).toString());
160 pieces.append(model->data(model->index(row, 1, QModelIndex()),
161 Qt::DisplayRole).toString());
162 pieces.append(model->data(model->index(row, 0, QModelIndex()),
163 Qt::DecorationRole).toString());
164
165 stream << pieces.join(",") << "\n";
166 }
167 }
168
169 file.close();
170 statusBar()->showMessage(tr("Saved %1").arg(fileName), 2000);
171 }
172}
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