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50
51#include "mainwindow.h"
52
53#include <QtWidgets>
54
55//! [0]
56MainWindow::MainWindow()
57{
58 selectedDate = QDate::currentDate();
59 fontSize = 10;
60
61 QWidget *centralWidget = new QWidget;
62//! [0]
63
64//! [1]
65 QLabel *dateLabel = new QLabel(tr(s: "Date:"));
66 QComboBox *monthCombo = new QComboBox;
67
68 for (int month = 1; month <= 12; ++month)
69 monthCombo->addItem(atext: QLocale::system().monthName(month));
70
71 QDateTimeEdit *yearEdit = new QDateTimeEdit;
72 yearEdit->setDisplayFormat("yyyy");
73 yearEdit->setDateRange(min: QDate(1753, 1, 1), max: QDate(8000, 1, 1));
74//! [1]
75
76 monthCombo->setCurrentIndex(selectedDate.month() - 1);
77 yearEdit->setDate(selectedDate);
78
79//! [2]
80 QLabel *fontSizeLabel = new QLabel(tr(s: "Font size:"));
81 QSpinBox *fontSizeSpinBox = new QSpinBox;
82 fontSizeSpinBox->setRange(min: 1, max: 64);
83
84 editor = new QTextBrowser;
85 insertCalendar();
86//! [2]
87
88//! [3]
89 connect(sender: monthCombo, signal: QOverload<int>::of(ptr: &QComboBox::activated),
90 receiver: this, slot: &MainWindow::setMonth);
91 connect(sender: yearEdit, signal: &QDateTimeEdit::dateChanged,
92 receiver: this, slot: &MainWindow::setYear);
93 connect(sender: fontSizeSpinBox, signal: QOverload<int>::of(ptr: &QSpinBox::valueChanged),
94 receiver: this, slot: &MainWindow::setFontSize);
95//! [3]
96
97 fontSizeSpinBox->setValue(10);
98
99//! [4]
100 QHBoxLayout *controlsLayout = new QHBoxLayout;
101 controlsLayout->addWidget(dateLabel);
102 controlsLayout->addWidget(monthCombo);
103 controlsLayout->addWidget(yearEdit);
104 controlsLayout->addSpacing(size: 24);
105 controlsLayout->addWidget(fontSizeLabel);
106 controlsLayout->addWidget(fontSizeSpinBox);
107 controlsLayout->addStretch(stretch: 1);
108
109 QVBoxLayout *centralLayout = new QVBoxLayout;
110 centralLayout->addLayout(layout: controlsLayout);
111 centralLayout->addWidget(editor, stretch: 1);
112 centralWidget->setLayout(centralLayout);
113
114 setCentralWidget(centralWidget);
115//! [4]
116}
117
118//! [5]
119void MainWindow::insertCalendar()
120{
121 editor->clear();
122 QTextCursor cursor = editor->textCursor();
123 cursor.beginEditBlock();
124
125 QDate date(selectedDate.year(), selectedDate.month(), 1);
126//! [5]
127
128//! [6]
129 QTextTableFormat tableFormat;
130 tableFormat.setAlignment(Qt::AlignHCenter);
131 tableFormat.setBackground(QColor("#e0e0e0"));
132 tableFormat.setCellPadding(2);
133 tableFormat.setCellSpacing(4);
134//! [6] //! [7]
135 QVector<QTextLength> constraints;
136 constraints << QTextLength(QTextLength::PercentageLength, 14)
137 << QTextLength(QTextLength::PercentageLength, 14)
138 << QTextLength(QTextLength::PercentageLength, 14)
139 << QTextLength(QTextLength::PercentageLength, 14)
140 << QTextLength(QTextLength::PercentageLength, 14)
141 << QTextLength(QTextLength::PercentageLength, 14)
142 << QTextLength(QTextLength::PercentageLength, 14);
143 tableFormat.setColumnWidthConstraints(constraints);
144//! [7]
145
146//! [8]
147 QTextTable *table = cursor.insertTable(rows: 1, cols: 7, format: tableFormat);
148//! [8]
149
150//! [9]
151 QTextFrame *frame = cursor.currentFrame();
152 QTextFrameFormat frameFormat = frame->frameFormat();
153 frameFormat.setBorder(1);
154 frame->setFrameFormat(frameFormat);
155//! [9]
156
157//! [10]
158 QTextCharFormat format = cursor.charFormat();
159 format.setFontPointSize(fontSize);
160
161 QTextCharFormat boldFormat = format;
162 boldFormat.setFontWeight(QFont::Bold);
163
164 QTextCharFormat highlightedFormat = boldFormat;
165 highlightedFormat.setBackground(Qt::yellow);
166//! [10]
167
168//! [11]
169 for (int weekDay = 1; weekDay <= 7; ++weekDay) {
170 QTextTableCell cell = table->cellAt(row: 0, col: weekDay-1);
171//! [11] //! [12]
172 QTextCursor cellCursor = cell.firstCursorPosition();
173 cellCursor.insertText(text: QLocale::system().dayName(weekDay), format: boldFormat);
174 }
175//! [12]
176
177//! [13]
178 table->insertRows(pos: table->rows(), num: 1);
179//! [13]
180
181 while (date.month() == selectedDate.month()) {
182 int weekDay = date.dayOfWeek();
183 QTextTableCell cell = table->cellAt(row: table->rows()-1, col: weekDay-1);
184 QTextCursor cellCursor = cell.firstCursorPosition();
185
186 if (date == QDate::currentDate())
187 cellCursor.insertText(text: QString("%1").arg(a: date.day()), format: highlightedFormat);
188 else
189 cellCursor.insertText(text: QString("%1").arg(a: date.day()), format);
190
191 date = date.addDays(days: 1);
192 if (weekDay == 7 && date.month() == selectedDate.month())
193 table->insertRows(pos: table->rows(), num: 1);
194 }
195
196 cursor.endEditBlock();
197//! [14]
198 setWindowTitle(tr(s: "Calendar for %1 %2"
199 ).arg(a: QLocale::system().monthName(selectedDate.month())
200 ).arg(a: selectedDate.year()));
201}
202//! [14]
203
204//! [15]
205void MainWindow::setFontSize(int size)
206{
207 fontSize = size;
208 insertCalendar();
209}
210//! [15]
211
212//! [16]
213void MainWindow::setMonth(int month)
214{
215 selectedDate = QDate(selectedDate.year(), month + 1, selectedDate.day());
216 insertCalendar();
217}
218//! [16]
219
220//! [17]
221void MainWindow::setYear(QDate date)
222{
223 selectedDate = QDate(date.year(), selectedDate.month(), selectedDate.day());
224 insertCalendar();
225}
226//! [17]
227

source code of qtbase/examples/widgets/richtext/calendar/mainwindow.cpp