Extract TitleControls from TitleWidget.

ui/colors.palette

@@ -538,7 +538,7 @@ notificationBg: windowBg; // custom notification window background
 // calls
 callBg: #26282cf2; // old phone call popup background
 callBgOpaque: #1b1f23 | callBg; // phone call popup background
-callBgButton: #1b1f2356 | callBg; // phone call window control buttons bg
+callBgButton: #1b1f237f | callBg; // phone call window control buttons bg
 callNameFg: #ffffff; // phone call popup name text
 callFingerprintBg: #00000066; // phone call popup emoji fingerprint background
 callStatusFg: #aaabac; // phone call popup status text

ui/platform/win/ui_window_title_win.cpp

@@ -19,39 +19,59 @@
 namespace Ui {
 namespace Platform {
 
-TitleWidget::TitleWidget(not_null<RpWidget*> parent)
-: RpWidget(parent)
-, _st(&st::defaultWindowTitle)
-, _minimize(this, _st->minimize)
-, _maximizeRestore(this, _st->maximize)
-, _close(this, _st->close)
-, _shadow(this, st::titleShadow)
-, _maximizedState(parent->windowState() & Qt::WindowMaximized)
+TitleControls::TitleControls(
+	not_null<RpWidget*> parent,
+	Fn<void(bool maximized)> maximize)
+: _st(&st::defaultWindowTitle)
+, _minimize(parent, _st->minimize)
+, _maximizeRestore(parent, _st->maximize)
+, _close(parent, _st->close)
+, _maximizedState(parent->windowState()
+	& (Qt::WindowMaximized | Qt::WindowFullScreen))
 , _activeState(parent->isActiveWindow()) {
-	init();
-}
+	init(std::move(maximize));
 
-void TitleWidget::setText(const QString &text) {
-	window()->setWindowTitle(text);
-}
-
-void TitleWidget::setStyle(const style::WindowTitle &st) {
-	_st = &st;
-	setGeometry(0, 0, window()->width(), _st->height);
+	_close->paintRequest(
+	) | rpl::start_with_next([=] {
+		const auto active = window()->isActiveWindow();
+		if (_activeState != active) {
+			_activeState = active;
 			updateButtonsState();
-	update();
+		}
+	}, _close->lifetime());
 }
 
-not_null<RpWidget*> TitleWidget::window() const {
-	return static_cast<RpWidget*>(parentWidget());
+void TitleControls::setStyle(const style::WindowTitle &st) {
+	_st = &st;
+	updateButtonsState();
 }
 
-void TitleWidget::setResizeEnabled(bool enabled) {
-	_resizeEnabled = enabled;
-	updateControlsVisibility();
+not_null<const style::WindowTitle*> TitleControls::st() const {
+	return _st;
 }
 
-void TitleWidget::init() {
+QRect TitleControls::geometry() const {
+	auto result = QRect();
+	const auto add = [&](auto &&control) {
+		if (!control->isHidden()) {
+			result = result.united(control->geometry());
+		}
+	};
+	add(_minimize);
+	add(_maximizeRestore);
+	add(_close);
+	return result;
+}
+
+not_null<RpWidget*> TitleControls::parent() const {
+	return static_cast<RpWidget*>(_close->parentWidget());
+}
+
+not_null<QWidget*> TitleControls::window() const {
+	return _close->window();
+}
+
+void TitleControls::init(Fn<void(bool maximized)> maximize) {
 	_minimize->setClickedCallback([=] {
 		window()->setWindowState(
 			window()->windowState() | Qt::WindowMinimized);
@@ -59,9 +79,13 @@ void TitleWidget::init() {
 	});
 	_minimize->setPointerCursor(false);
 	_maximizeRestore->setClickedCallback([=] {
+		if (maximize) {
+			maximize(!_maximizedState);
+		} else {
 			window()->setWindowState(_maximizedState
 				? Qt::WindowNoState
 				: Qt::WindowMaximized);
+		}
 		_maximizeRestore->clearState();
 	});
 	_maximizeRestore->setPointerCursor(false);
@@ -71,32 +95,32 @@ void TitleWidget::init() {
 	});
 	_close->setPointerCursor(false);
 
-	setAttribute(Qt::WA_OpaquePaintEvent);
-
-	window()->widthValue(
+	parent()->widthValue(
 	) | rpl::start_with_next([=](int width) {
-		setGeometry(0, 0, width, _st->height);
-	}, lifetime());
+		updateControlsPosition();
+	}, _close->lifetime());
 
 	window()->createWinId();
-	connect(
+	QObject::connect(
 		window()->windowHandle(),
 		&QWindow::windowStateChanged,
 		[=](Qt::WindowState state) { handleWindowStateChanged(state); });
-	_activeState = isActiveWindow();
+	_activeState = parent()->isActiveWindow();
 	updateButtonsState();
 }
 
-void TitleWidget::paintEvent(QPaintEvent *e) {
-	const auto active = isActiveWindow();
-	if (_activeState != active) {
-		_activeState = active;
-		updateButtonsState();
-	}
-	QPainter(this).fillRect(e->rect(), active ? _st->bgActive : _st->bg);
+void TitleControls::setResizeEnabled(bool enabled) {
+	_resizeEnabled = enabled;
+	updateControlsVisibility();
 }
 
-void TitleWidget::updateControlsPosition() {
+void TitleControls::raise() {
+	_minimize->raise();
+	_maximizeRestore->raise();
+	_close->raise();
+}
+
+void TitleControls::updateControlsPosition() {
 	auto right = 0;
 	_close->moveToRight(right, 0); right += _close->width();
 	_maximizeRestore->moveToRight(right, 0);
@@ -106,28 +130,25 @@ void TitleWidget::updateControlsPosition() {
 	_minimize->moveToRight(right, 0);
 }
 
-void TitleWidget::resizeEvent(QResizeEvent *e) {
-	updateControlsPosition();
-	_shadow->setGeometry(0, height() - st::lineWidth, width(), st::lineWidth);
-}
-
-void TitleWidget::updateControlsVisibility() {
+void TitleControls::updateControlsVisibility() {
 	_maximizeRestore->setVisible(_resizeEnabled);
 	updateControlsPosition();
-	update();
 }
 
-void TitleWidget::handleWindowStateChanged(Qt::WindowState state) {
-	if (state == Qt::WindowMinimized) return;
+void TitleControls::handleWindowStateChanged(Qt::WindowState state) {
+	if (state == Qt::WindowMinimized) {
+		return;
+	}
 
-	auto maximized = (state == Qt::WindowMaximized);
+	auto maximized = (state == Qt::WindowMaximized)
+		|| (state == Qt::WindowFullScreen);
 	if (_maximizedState != maximized) {
 		_maximizedState = maximized;
 		updateButtonsState();
 	}
 }
 
-void TitleWidget::updateButtonsState() {
+void TitleControls::updateButtonsState() {
 	const auto minimize = _activeState
 		? &_st->minimizeIconActive
 		: &_st->minimize.icon;
@@ -161,12 +182,45 @@ void TitleWidget::updateButtonsState() {
 	_close->setIconOverride(close, closeOver);
 }
 
+TitleWidget::TitleWidget(not_null<RpWidget*> parent)
+: RpWidget(parent)
+, _controls(this)
+, _shadow(this, st::titleShadow) {
+	setAttribute(Qt::WA_OpaquePaintEvent);
+
+	parent->widthValue(
+	) | rpl::start_with_next([=](int width) {
+		setGeometry(0, 0, width, _controls.st()->height);
+	}, lifetime());
+}
+
+void TitleWidget::setText(const QString &text) {
+	window()->setWindowTitle(text);
+}
+
+void TitleWidget::setStyle(const style::WindowTitle &st) {
+	_controls.setStyle(st);
+	setGeometry(0, 0, window()->width(), _controls.st()->height);
+	update();
+}
+
+void TitleWidget::setResizeEnabled(bool enabled) {
+	_controls.setResizeEnabled(enabled);
+}
+
+void TitleWidget::paintEvent(QPaintEvent *e) {
+	const auto active = window()->isActiveWindow();
+	QPainter(this).fillRect(
+		e->rect(),
+		active ? _controls.st()->bgActive : _controls.st()->bg);
+}
+
+void TitleWidget::resizeEvent(QResizeEvent *e) {
+	_shadow->setGeometry(0, height() - st::lineWidth, width(), st::lineWidth);
+}
+
 HitTestResult TitleWidget::hitTest(QPoint point) const {
-	if (false
-		|| (_minimize->geometry().contains(point))
-		|| (_maximizeRestore->geometry().contains(point))
-		|| (_close->geometry().contains(point))
-	) {
+	if (_controls.geometry().contains(point)) {
 		return HitTestResult::SysButton;
 	} else if (rect().contains(point)) {
 		return HitTestResult::Caption;

ui/platform/win/ui_window_title_win.h

@@ -38,6 +38,40 @@ enum class HitTestResult {
 	TopLeft,
 };
 
+class TitleControls final {
+public:
+	TitleControls(
+		not_null<RpWidget*> parent,
+		Fn<void(bool maximized)> maximize = nullptr);
+
+	void setStyle(const style::WindowTitle &st);
+	[[nodiscard]] not_null<const style::WindowTitle*> st() const;
+	[[nodiscard]] QRect geometry() const;
+	void setResizeEnabled(bool enabled);
+	void raise();
+
+private:
+	[[nodiscard]] not_null<RpWidget*> parent() const;
+	[[nodiscard]] not_null<QWidget*> window() const;
+
+	void init(Fn<void(bool maximized)> maximize);
+	void updateControlsVisibility();
+	void updateButtonsState();
+	void updateControlsPosition();
+	void handleWindowStateChanged(Qt::WindowState state = Qt::WindowNoState);
+
+	not_null<const style::WindowTitle*> _st;
+
+	object_ptr<Ui::IconButton> _minimize;
+	object_ptr<Ui::IconButton> _maximizeRestore;
+	object_ptr<Ui::IconButton> _close;
+
+	bool _maximizedState = false;
+	bool _activeState = false;
+	bool _resizeEnabled = true;
+
+};
+
 class TitleWidget : public RpWidget {
 public:
 	explicit TitleWidget(not_null<RpWidget*> parent);
@@ -52,25 +86,9 @@ protected:
 	void resizeEvent(QResizeEvent *e) override;
 
 private:
-	not_null<RpWidget*> window() const;
-
-	void init();
-	void handleWindowStateChanged(Qt::WindowState state = Qt::WindowNoState);
-	void updateControlsVisibility();
-	void updateButtonsState();
-	void updateControlsPosition();
-
-	not_null<const style::WindowTitle*> _st;
-
-	object_ptr<Ui::IconButton> _minimize;
-	object_ptr<Ui::IconButton> _maximizeRestore;
-	object_ptr<Ui::IconButton> _close;
+	TitleControls _controls;
 	object_ptr<Ui::PlainShadow> _shadow;
 
-	bool _maximizedState = false;
-	bool _activeState = false;
-	bool _resizeEnabled = true;
-
 };
 
 } // namespace Platform