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-rw-r--r--examples/widgets/widgets/charactermap/mainwindow.cpp121
1 files changed, 102 insertions, 19 deletions
diff --git a/examples/widgets/widgets/charactermap/mainwindow.cpp b/examples/widgets/widgets/charactermap/mainwindow.cpp
index 2141850f16..8b406ba1ca 100644
--- a/examples/widgets/widgets/charactermap/mainwindow.cpp
+++ b/examples/widgets/widgets/charactermap/mainwindow.cpp
@@ -54,10 +54,30 @@
#include "mainwindow.h"
//! [0]
+
+Q_DECLARE_METATYPE(QFontComboBox::FontFilter)
+
MainWindow::MainWindow()
{
+ QMenu *fileMenu = menuBar()->addMenu(tr("File"));
+ fileMenu->addAction(tr("Quit"), this, &QWidget::close);
+ QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
+ helpMenu->addAction(tr("Show Font Info"), this, &MainWindow::showInfo);
+ helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt);
+
QWidget *centralWidget = new QWidget;
+ QLabel *filterLabel = new QLabel(tr("Filter:"));
+ filterCombo = new QComboBox;
+ filterCombo->addItem(tr("All"), QVariant::fromValue(QFontComboBox::AllFonts));
+ filterCombo->addItem(tr("Scalable"), QVariant::fromValue(QFontComboBox::ScalableFonts));
+ filterCombo->addItem(tr("Monospaced"), QVariant::fromValue(QFontComboBox::MonospacedFonts));
+ filterCombo->addItem(tr("Proportional"), QVariant::fromValue(QFontComboBox::ProportionalFonts));
+ filterCombo->setCurrentIndex(0);
+ typedef void (QComboBox::*QComboBoxIntSignal)(int);
+ connect(filterCombo, static_cast<QComboBoxIntSignal>(&QComboBox::currentIndexChanged),
+ this, &MainWindow::filterChanged);
+
QLabel *fontLabel = new QLabel(tr("Font:"));
fontCombo = new QFontComboBox;
QLabel *sizeLabel = new QLabel(tr("Size:"));
@@ -80,38 +100,39 @@ MainWindow::MainWindow()
//! [2]
lineEdit = new QLineEdit;
+ lineEdit->setClearButtonEnabled(true);
#ifndef QT_NO_CLIPBOARD
QPushButton *clipboardButton = new QPushButton(tr("&To clipboard"));
//! [2]
-//! [3]
- clipboard = QApplication::clipboard();
-//! [3]
#endif
//! [4]
- connect(fontCombo, SIGNAL(currentFontChanged(QFont)),
- this, SLOT(findStyles(QFont)));
- connect(fontCombo, SIGNAL(currentFontChanged(QFont)),
- this, SLOT(findSizes(QFont)));
- connect(fontCombo, SIGNAL(currentFontChanged(QFont)),
- characterWidget, SLOT(updateFont(QFont)));
- connect(sizeCombo, SIGNAL(currentIndexChanged(QString)),
- characterWidget, SLOT(updateSize(QString)));
- connect(styleCombo, SIGNAL(currentIndexChanged(QString)),
- characterWidget, SLOT(updateStyle(QString)));
+ connect(fontCombo, &QFontComboBox::currentFontChanged,
+ this, &MainWindow::findStyles);
+ connect(fontCombo, &QFontComboBox::currentFontChanged,
+ this, &MainWindow::findSizes);
+ connect(fontCombo, &QFontComboBox::currentFontChanged,
+ characterWidget, &CharacterWidget::updateFont);
+ typedef void (QComboBox::*QComboBoxStringSignal)(const QString &);
+ connect(sizeCombo, static_cast<QComboBoxStringSignal>(&QComboBox::currentIndexChanged),
+ characterWidget, &CharacterWidget::updateSize);
+ connect(styleCombo, static_cast<QComboBoxStringSignal>(&QComboBox::currentIndexChanged),
+ characterWidget, &CharacterWidget::updateStyle);
//! [4] //! [5]
- connect(characterWidget, SIGNAL(characterSelected(QString)),
- this, SLOT(insertCharacter(QString)));
+ connect(characterWidget, &CharacterWidget::characterSelected,
+ this, &MainWindow::insertCharacter);
#ifndef QT_NO_CLIPBOARD
- connect(clipboardButton, SIGNAL(clicked()), this, SLOT(updateClipboard()));
+ connect(clipboardButton, &QAbstractButton::clicked, this, &MainWindow::updateClipboard);
#endif
//! [5]
- connect(fontMerging, SIGNAL(toggled(bool)), characterWidget, SLOT(updateFontMerging(bool)));
+ connect(fontMerging, &QAbstractButton::toggled, characterWidget, &CharacterWidget::updateFontMerging);
//! [6]
QHBoxLayout *controlsLayout = new QHBoxLayout;
+ controlsLayout->addWidget(filterLabel);
+ controlsLayout->addWidget(filterCombo, 1);
controlsLayout->addWidget(fontLabel);
controlsLayout->addWidget(fontCombo, 1);
controlsLayout->addWidget(sizeLabel);
@@ -163,6 +184,14 @@ void MainWindow::findStyles(const QFont &font)
}
//! [8]
+void MainWindow::filterChanged(int f)
+{
+ const QFontComboBox::FontFilter filter =
+ filterCombo->itemData(f).value<QFontComboBox::FontFilter>();
+ fontCombo->setFontFilters(filter);
+ statusBar()->showMessage(tr("%n font(s) found", 0, fontCombo->count()));
+}
+
void MainWindow::findSizes(const QFont &font)
{
QFontDatabase fontDatabase;
@@ -208,9 +237,63 @@ void MainWindow::insertCharacter(const QString &character)
void MainWindow::updateClipboard()
{
//! [11]
- clipboard->setText(lineEdit->text(), QClipboard::Clipboard);
+ QGuiApplication::clipboard()->setText(lineEdit->text(), QClipboard::Clipboard);
//! [11]
- clipboard->setText(lineEdit->text(), QClipboard::Selection);
+ QGuiApplication::clipboard()->setText(lineEdit->text(), QClipboard::Selection);
}
#endif
+
+class FontInfoDialog : public QDialog
+{
+public:
+ explicit FontInfoDialog(QWidget *parent = Q_NULLPTR);
+
+private:
+ QString text() const;
+};
+
+FontInfoDialog::FontInfoDialog(QWidget *parent) : QDialog(parent)
+{
+ setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
+ QVBoxLayout *mainLayout = new QVBoxLayout(this);
+ QPlainTextEdit *textEdit = new QPlainTextEdit(text(), this);
+ textEdit->setReadOnly(true);
+ textEdit->setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
+ mainLayout->addWidget(textEdit);
+ QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Close, this);
+ connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
+ mainLayout->addWidget(buttonBox);
+}
+
+QString FontInfoDialog::text() const
+{
+ QString text;
+ QTextStream str(&text);
+ const QFont defaultFont = QFontDatabase::systemFont(QFontDatabase::GeneralFont);
+ const QFont fixedFont = QFontDatabase::systemFont(QFontDatabase::FixedFont);
+ const QFont titleFont = QFontDatabase::systemFont(QFontDatabase::TitleFont);
+ const QFont smallestReadableFont = QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont);
+
+ str << "Qt " << QT_VERSION_STR << " on " << QGuiApplication::platformName()
+ << ", " << logicalDpiX() << "DPI";
+ if (!qFuzzyCompare(devicePixelRatioF(), qreal(1)))
+ str << ", device pixel ratio: " << devicePixelRatioF();
+ str << "\n\nDefault font : " << defaultFont.family() << ", " << defaultFont.pointSizeF() << "pt\n"
+ << "Fixed font : " << fixedFont.family() << ", " << fixedFont.pointSizeF() << "pt\n"
+ << "Title font : " << titleFont.family() << ", " << titleFont.pointSizeF() << "pt\n"
+ << "Smallest font: " << smallestReadableFont.family() << ", " << smallestReadableFont.pointSizeF() << "pt\n";
+
+ return text;
+}
+
+void MainWindow::showInfo()
+{
+ const QRect screenGeometry = QApplication::desktop()->screenGeometry(this);
+ FontInfoDialog *dialog = new FontInfoDialog(this);
+ dialog->setWindowTitle(tr("Fonts"));
+ dialog->setAttribute(Qt::WA_DeleteOnClose);
+ dialog->resize(screenGeometry.width() / 4, screenGeometry.height() / 4);
+ dialog->show();
+}
+
//! [10]
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-14 14:22:28 +0000