QTextFrame based calendar
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#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QDate>
#include <QMainWindow>
QT_BEGIN_NAMESPACE
class QTextBrowser;
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow();
public slots:
void setFontSize(int size);
void setMonth(int month);
void setYear(QDate date);
private:
void insertCalendar();
int fontSize;
QDate selectedDate;
QTextBrowser *editor;
};
#endif
#include <QtGui>
#include "mainwindow.h"
MainWindow::MainWindow()
{
selectedDate = QDate::currentDate();
fontSize = 10;
QWidget *centralWidget = new QWidget;
QLabel *dateLabel = new QLabel(tr("Date:"));
QComboBox *monthCombo = new QComboBox;
for (int month = 1; month <= 12; ++month)
monthCombo->addItem(QDate::longMonthName(month));
QDateTimeEdit *yearEdit = new QDateTimeEdit;
yearEdit->setDisplayFormat("yyyy");
yearEdit->setDateRange(QDate(1753, 1, 1), QDate(8000, 1, 1));
monthCombo->setCurrentIndex(selectedDate.month() - 1);
yearEdit->setDate(selectedDate);
QLabel *fontSizeLabel = new QLabel(tr("Font size:"));
QSpinBox *fontSizeSpinBox = new QSpinBox;
fontSizeSpinBox->setRange(1, 64);
fontSizeSpinBox->setValue(10);
editor = new QTextBrowser;
insertCalendar();
connect(monthCombo, SIGNAL(activated(int)), this, SLOT(setMonth(int)));
connect(yearEdit, SIGNAL(dateChanged(QDate)), this, SLOT(setYear(QDate)));
connect(fontSizeSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(setFontSize(int)));
QHBoxLayout *controlsLayout = new QHBoxLayout;
controlsLayout->addWidget(dateLabel);
controlsLayout->addWidget(monthCombo);
controlsLayout->addWidget(yearEdit);
controlsLayout->addSpacing(24);
controlsLayout->addWidget(fontSizeLabel);
controlsLayout->addWidget(fontSizeSpinBox);
controlsLayout->addStretch(1);
QVBoxLayout *centralLayout = new QVBoxLayout;
centralLayout->addLayout(controlsLayout);
centralLayout->addWidget(editor, 1);
centralWidget->setLayout(centralLayout);
setCentralWidget(centralWidget);
}
void MainWindow::insertCalendar()
{
editor->clear();
QTextCursor cursor = editor->textCursor();
cursor.beginEditBlock();
QDate date(selectedDate.year(), selectedDate.month(), 1);
QTextTableFormat tableFormat;
tableFormat.setAlignment(Qt::AlignHCenter);
tableFormat.setBackground(QColor("#e0e0e0"));
tableFormat.setCellPadding(2);
tableFormat.setCellSpacing(4);
QVector<QTextLength> constraints;
constraints << QTextLength(QTextLength::PercentageLength, 14)
<< QTextLength(QTextLength::PercentageLength, 14)
<< QTextLength(QTextLength::PercentageLength, 14)
<< QTextLength(QTextLength::PercentageLength, 14)
<< QTextLength(QTextLength::PercentageLength, 14)
<< QTextLength(QTextLength::PercentageLength, 14)
<< QTextLength(QTextLength::PercentageLength, 14);
tableFormat.setColumnWidthConstraints(constraints);
QTextTable *table = cursor.insertTable(1, 7, tableFormat);
QTextFrame *frame = cursor.currentFrame();
QTextFrameFormat frameFormat = frame->frameFormat();
frameFormat.setBorder(1);
frame->setFrameFormat(frameFormat);
QTextCharFormat format = cursor.charFormat();
format.setFontPointSize(fontSize);
QTextCharFormat boldFormat = format;
boldFormat.setFontWeight(QFont::Bold);
QTextCharFormat highlightedFormat = boldFormat;
highlightedFormat.setBackground(Qt::yellow);
for (int weekDay = 1; weekDay <= 7; ++weekDay) {
QTextTableCell cell = table->cellAt(0, weekDay-1);
QTextCursor cellCursor = cell.firstCursorPosition();
cellCursor.insertText(QString("%1").arg(QDate::longDayName(weekDay)),
boldFormat);
}
table->insertRows(table->rows(), 1);
while (date.month() == selectedDate.month()) {
int weekDay = date.dayOfWeek();
QTextTableCell cell = table->cellAt(table->rows()-1, weekDay-1);
QTextCursor cellCursor = cell.firstCursorPosition();
if (date == QDate::currentDate())
cellCursor.insertText(QString("%1").arg(date.day()), highlightedFormat);
else
cellCursor.insertText(QString("%1").arg(date.day()), format);
date = date.addDays(1);
if (weekDay == 7 && date.month() == selectedDate.month())
table->insertRows(table->rows(), 1);
}
cursor.endEditBlock();
setWindowTitle(tr("Calendar for %1 %2"
).arg(QDate::longMonthName(selectedDate.month())
).arg(selectedDate.year()));
}
void MainWindow::setFontSize(int size)
{
fontSize = size;
insertCalendar();
}
void MainWindow::setMonth(int month)
{
selectedDate = QDate(selectedDate.year(), month + 1, selectedDate.day());
insertCalendar();
}
void MainWindow::setYear(QDate date)
{
selectedDate = QDate(date.year(), selectedDate.month(), selectedDate.day());
insertCalendar();
}
#include <QtGui>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MainWindow window;
window.resize(640, 256);
window.show();
return app.exec();
}
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