Add settings for window title

src/settingspage/application.cpp

@@ -1,10 +1,42 @@
 #include "settingspage/application.hpp"
+
+#include <util/font.hpp>
+
 #include "mainwindow.hpp"
 
 SettingsPage::Application::Application(lib::settings &settings, QWidget *parent)
 	: SettingsPage::Base(settings, parent)
 {
 	addTab(app(), "General");
+
+	if (lib::developer_mode::enabled)
+	{
+		addTab(windowTitle(), QStringLiteral("Window title"));
+	}
+}
+
+void SettingsPage::Application::hideEvent(QHideEvent *event)
+{
+	Base::hideEvent(event);
+
+	const auto *mainWindow = MainWindow::find(parent());
+	if (mainWindow != nullptr)
+	{
+		disconnect(mainWindow, &MainWindow::playbackRefreshed,
+			this, &Application::onPlaybackRefreshed);
+	}
+}
+
+void SettingsPage::Application::showEvent(QShowEvent *event)
+{
+	Base::showEvent(event);
+
+	const auto *mainWindow = MainWindow::find(parent());
+	if (mainWindow != nullptr)
+	{
+		connect(mainWindow, &MainWindow::playbackRefreshed,
+			this, &Application::onPlaybackRefreshed);
+	}
 }
 
 auto SettingsPage::Application::app() -> QWidget *
@@ -84,6 +116,60 @@ auto SettingsPage::Application::app() -> QWidget *
 	return Widget::layoutToWidget(layout, this);
 }
 
+auto SettingsPage::Application::windowTitle() -> QWidget *
+{
+	auto *layout = new QVBoxLayout();
+
+	auto *formatLayout = new QGridLayout();
+	formatLayout->setVerticalSpacing(0);
+
+	auto *titleFormatTitle = new QLabel(QStringLiteral("Format"), this);
+	formatLayout->addWidget(titleFormatTitle, 0, 0);
+
+	titleFormat = new QLineEdit(this);
+	titleFormat->setFont(Font::monospace());
+	titleFormat->setPlaceholderText(QStringLiteral("{artist} - {track}"));
+	formatLayout->addWidget(titleFormat, 0, 1);
+
+	connect(titleFormat, &QLineEdit::textEdited,
+		this, &Application::onTitleFormatEdited);
+
+	titlePreview = new QLabel(this);
+	titlePreview->setFont(Font::italic());
+	formatLayout->addWidget(titlePreview, 1, 1);
+
+	layout->addLayout(formatLayout);
+
+	const QMap<QString, QString> options{
+		{QStringLiteral("{artist}"), QStringLiteral("Name of primary artist")},
+		{QStringLiteral("{artists}"), QStringLiteral("All artists, seperated by commas")},
+		{QStringLiteral("{track}"), QStringLiteral("Name of track")},
+	};
+
+	auto *infoLayout = new QGridLayout();
+	infoLayout->setRowStretch(static_cast<int>(options.size()), 1);
+	QMapIterator<QString, QString> iter(options);
+	auto row = 0;
+
+	while (iter.hasNext())
+	{
+		iter.next();
+
+		auto *key = new QLabel(iter.key(), this);
+		key->setFont(Font::monospace());
+		infoLayout->addWidget(key, row, 0);
+
+		auto *value = new QLabel(iter.value(), this);
+		infoLayout->addWidget(value, row++, 1);
+	}
+
+	auto *infoBox = new QGroupBox(QStringLiteral("Possible values"), this);
+	infoBox->setLayout(infoLayout);
+	layout->addWidget(infoBox, 1);
+
+	return Widget::layoutToWidget(layout, this);
+}
+
 auto SettingsPage::Application::icon() -> QIcon
 {
 	return Icon::get(QStringLiteral("document-properties"));
@@ -169,3 +255,37 @@ auto SettingsPage::Application::save() -> bool
 
 	return success;
 }
+
+void SettingsPage::Application::updatePreview()
+{
+	if (titleFormat == nullptr
+		|| titlePreview == nullptr
+		|| !currentTrack.is_valid())
+	{
+		return;
+	}
+
+	const auto format = titleFormat->text().isEmpty()
+		? titleFormat->placeholderText()
+		: titleFormat->text();
+
+	const auto title = lib::format::title(currentTrack, format.toStdString());
+	titlePreview->setText(QString::fromStdString(title));
+}
+
+void SettingsPage::Application::onPlaybackRefreshed(const lib::spt::playback &current,
+	const lib::spt::playback &/*previous*/)
+{
+	if (currentTrack.id == current.item.id)
+	{
+		return;
+	}
+
+	currentTrack = current.item;
+	updatePreview();
+}
+
+void SettingsPage::Application::onTitleFormatEdited(const QString &/*text*/)
+{
+	updatePreview();
+}

src/settingspage/application.hpp

@@ -2,6 +2,7 @@
 
 #include "util/icon.hpp"
 #include "lib/settings.hpp"
+#include "lib/spotify/playback.hpp"
 #include "settingspage/base.hpp"
 #include "util/widget.hpp"
 
@@ -16,6 +17,10 @@ namespace SettingsPage
 		auto title() -> QString override;
 		auto save() -> bool override;
 
+	protected:
+		void hideEvent(QHideEvent *event) override;
+		void showEvent(QShowEvent *event) override;
+
 	private:
 		QCheckBox *appMedia = nullptr;
 		QCheckBox *appHotkeys = nullptr;
@@ -25,12 +30,25 @@ namespace SettingsPage
 		QCheckBox *appUpdates = nullptr;
 		QCheckBox *ignoreUnavailableIndex = nullptr;
 
+		QLineEdit *titleFormat;
+		QLabel *titlePreview;
+
+		lib::spt::track currentTrack;
+
 		static constexpr int minRefreshInterval = 1;
 		static constexpr int maxRefreshInterval = 60;
 
 		static constexpr int minMaxQueue = 1;
 		static constexpr int maxMaxQueue = 1000;
 
 		auto app() -> QWidget *;
+		auto windowTitle() -> QWidget *;
+
+		void updatePreview();
+
+		void onPlaybackRefreshed(const lib::spt::playback &current,
+			const lib::spt::playback &previous);
+
+		void onTitleFormatEdited(const QString &text);
 	};
 }

src/util/font.cpp

@@ -9,6 +9,13 @@ auto Font::monospace() -> QFont
 	return QFontDatabase::systemFont(QFontDatabase::FixedFont);
 }
 
+auto Font::italic() -> QFont
+{
+	QFont font;
+	font.setItalic(true);
+	return font;
+}
+
 auto Font::numberWidth() -> int
 {
 	QFont font;

src/util/font.hpp

@@ -7,6 +7,7 @@ class Font
 {
 public:
 	static auto monospace() -> QFont;
+	static auto italic() -> QFont;
 	static auto numberWidth() -> int;
 
 	static void setFontWeight(QAction *action, QFont::Weight weight);