examples/richtext/calendar/mainwindow.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 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 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
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    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
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    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include <QtGui>
       
    43 
       
    44 #include "mainwindow.h"
       
    45 
       
    46 //! [0]
       
    47 MainWindow::MainWindow()
       
    48 {
       
    49     selectedDate = QDate::currentDate();
       
    50     fontSize = 10;
       
    51 
       
    52     QWidget *centralWidget = new QWidget;
       
    53 //! [0]
       
    54 
       
    55 //! [1]
       
    56     QLabel *dateLabel = new QLabel(tr("Date:"));
       
    57     QComboBox *monthCombo = new QComboBox;
       
    58 
       
    59     for (int month = 1; month <= 12; ++month)
       
    60         monthCombo->addItem(QDate::longMonthName(month));
       
    61 
       
    62     QDateTimeEdit *yearEdit = new QDateTimeEdit;
       
    63     yearEdit->setDisplayFormat("yyyy");
       
    64     yearEdit->setDateRange(QDate(1753, 1, 1), QDate(8000, 1, 1));
       
    65 //! [1]
       
    66 
       
    67     monthCombo->setCurrentIndex(selectedDate.month() - 1);
       
    68     yearEdit->setDate(selectedDate);
       
    69 
       
    70 //! [2]
       
    71     QLabel *fontSizeLabel = new QLabel(tr("Font size:"));
       
    72     QSpinBox *fontSizeSpinBox = new QSpinBox;
       
    73     fontSizeSpinBox->setRange(1, 64);
       
    74     fontSizeSpinBox->setValue(10);
       
    75 
       
    76     editor = new QTextBrowser;
       
    77     insertCalendar();
       
    78 //! [2]
       
    79 
       
    80 //! [3]
       
    81     connect(monthCombo, SIGNAL(activated(int)), this, SLOT(setMonth(int)));
       
    82     connect(yearEdit, SIGNAL(dateChanged(QDate)), this, SLOT(setYear(QDate)));
       
    83     connect(fontSizeSpinBox, SIGNAL(valueChanged(int)),
       
    84             this, SLOT(setFontSize(int)));
       
    85 //! [3]
       
    86 
       
    87 //! [4]
       
    88     QHBoxLayout *controlsLayout = new QHBoxLayout;
       
    89     controlsLayout->addWidget(dateLabel);
       
    90     controlsLayout->addWidget(monthCombo);
       
    91     controlsLayout->addWidget(yearEdit);
       
    92     controlsLayout->addSpacing(24);
       
    93     controlsLayout->addWidget(fontSizeLabel);
       
    94     controlsLayout->addWidget(fontSizeSpinBox);
       
    95     controlsLayout->addStretch(1);
       
    96 
       
    97     QVBoxLayout *centralLayout = new QVBoxLayout;
       
    98     centralLayout->addLayout(controlsLayout);
       
    99     centralLayout->addWidget(editor, 1);
       
   100     centralWidget->setLayout(centralLayout);
       
   101 
       
   102     setCentralWidget(centralWidget);
       
   103 //! [4]
       
   104 }
       
   105 
       
   106 //! [5]
       
   107 void MainWindow::insertCalendar()
       
   108 {
       
   109     editor->clear();
       
   110     QTextCursor cursor = editor->textCursor();
       
   111     cursor.beginEditBlock();
       
   112 
       
   113     QDate date(selectedDate.year(), selectedDate.month(), 1);
       
   114 //! [5]
       
   115 
       
   116 //! [6]
       
   117     QTextTableFormat tableFormat;
       
   118     tableFormat.setAlignment(Qt::AlignHCenter);
       
   119     tableFormat.setBackground(QColor("#e0e0e0"));
       
   120     tableFormat.setCellPadding(2);
       
   121     tableFormat.setCellSpacing(4);
       
   122 //! [6] //! [7]
       
   123     QVector<QTextLength> constraints;
       
   124     constraints << QTextLength(QTextLength::PercentageLength, 14)
       
   125                 << QTextLength(QTextLength::PercentageLength, 14)
       
   126                 << QTextLength(QTextLength::PercentageLength, 14)
       
   127                 << QTextLength(QTextLength::PercentageLength, 14)
       
   128                 << QTextLength(QTextLength::PercentageLength, 14)
       
   129                 << QTextLength(QTextLength::PercentageLength, 14)
       
   130                 << QTextLength(QTextLength::PercentageLength, 14);
       
   131     tableFormat.setColumnWidthConstraints(constraints);
       
   132 //! [7]
       
   133 
       
   134 //! [8]
       
   135     QTextTable *table = cursor.insertTable(1, 7, tableFormat);
       
   136 //! [8]
       
   137 
       
   138 //! [9]
       
   139     QTextFrame *frame = cursor.currentFrame();
       
   140     QTextFrameFormat frameFormat = frame->frameFormat();
       
   141     frameFormat.setBorder(1);
       
   142     frame->setFrameFormat(frameFormat);
       
   143 //! [9]
       
   144 
       
   145 //! [10]
       
   146     QTextCharFormat format = cursor.charFormat();
       
   147     format.setFontPointSize(fontSize);
       
   148 
       
   149     QTextCharFormat boldFormat = format;
       
   150     boldFormat.setFontWeight(QFont::Bold);
       
   151 
       
   152     QTextCharFormat highlightedFormat = boldFormat;
       
   153     highlightedFormat.setBackground(Qt::yellow);
       
   154 //! [10]
       
   155 
       
   156 //! [11]
       
   157     for (int weekDay = 1; weekDay <= 7; ++weekDay) {
       
   158         QTextTableCell cell = table->cellAt(0, weekDay-1);
       
   159 //! [11] //! [12]
       
   160         QTextCursor cellCursor = cell.firstCursorPosition();
       
   161         cellCursor.insertText(QString("%1").arg(QDate::longDayName(weekDay)),
       
   162                               boldFormat);
       
   163     }
       
   164 //! [12]
       
   165 
       
   166 //! [13]
       
   167     table->insertRows(table->rows(), 1);
       
   168 //! [13]
       
   169 
       
   170     while (date.month() == selectedDate.month()) {
       
   171         int weekDay = date.dayOfWeek();
       
   172         QTextTableCell cell = table->cellAt(table->rows()-1, weekDay-1);
       
   173         QTextCursor cellCursor = cell.firstCursorPosition();
       
   174 
       
   175         if (date == QDate::currentDate())
       
   176             cellCursor.insertText(QString("%1").arg(date.day()), highlightedFormat);
       
   177         else
       
   178             cellCursor.insertText(QString("%1").arg(date.day()), format);
       
   179 
       
   180         date = date.addDays(1);
       
   181         if (weekDay == 7 && date.month() == selectedDate.month())
       
   182             table->insertRows(table->rows(), 1);
       
   183     }
       
   184 
       
   185     cursor.endEditBlock();
       
   186 //! [14]
       
   187     setWindowTitle(tr("Calendar for %1 %2"
       
   188         ).arg(QDate::longMonthName(selectedDate.month())
       
   189         ).arg(selectedDate.year()));
       
   190 }
       
   191 //! [14]
       
   192 
       
   193 //! [15]
       
   194 void MainWindow::setFontSize(int size)
       
   195 {
       
   196     fontSize = size;
       
   197     insertCalendar();
       
   198 }
       
   199 //! [15]
       
   200 
       
   201 //! [16]
       
   202 void MainWindow::setMonth(int month)
       
   203 {
       
   204     selectedDate = QDate(selectedDate.year(), month + 1, selectedDate.day());
       
   205     insertCalendar();
       
   206 }
       
   207 //! [16]
       
   208 
       
   209 //! [17]
       
   210 void MainWindow::setYear(QDate date)
       
   211 {
       
   212     selectedDate = QDate(date.year(), selectedDate.month(), selectedDate.day());
       
   213     insertCalendar();
       
   214 }
       
   215 //! [17]