Handle emoji myself in custom macOS title.

ui/platform/mac/ui_window_mac.h

@@ -28,6 +28,8 @@ public:
 	void setGeometry(QRect rect) override;
 	void close() override;
 
+	const style::TextStyle &titleTextStyle() const override;
+
 private:
 	class Private;
 	friend class Private;

ui/platform/mac/ui_window_mac.mm

@@ -422,6 +422,10 @@ void WindowHelper::close() {
 	_private->close();
 }
 
+const style::TextStyle &WindowHelper::titleTextStyle() const {
+	return _title->textStyle();
+}
+
 void WindowHelper::init() {
 	updateCustomTitleVisibility(true);
 

ui/platform/mac/ui_window_title_mac.h

@@ -6,6 +6,7 @@
 //
 #pragma once
 
+#include "ui/text/text.h"
 #include "ui/rp_widget.h"
 #include "base/object_ptr.h"
 
@@ -14,6 +15,7 @@
 
 namespace style {
 struct WindowTitle;
+struct TextStyle;
 } // namespace style
 
 namespace Ui {
@@ -25,12 +27,14 @@ namespace Platform {
 class TitleWidget : public RpWidget {
 public:
 	TitleWidget(not_null<RpWidget*> parent, int height);
+	~TitleWidget();
 
 	void setText(const QString &text);
 	void setStyle(const style::WindowTitle &st);
 	void setControlsRect(const QRect &rect);
 	[[nodiscard]] QString text() const;
 	[[nodiscard]] bool shouldBeHidden() const;
+	[[nodiscard]] const style::TextStyle &textStyle() const;
 
 protected:
 	void paintEvent(QPaintEvent *e) override;
@@ -43,11 +47,11 @@ private:
 	void init(int height);
 
 	not_null<const style::WindowTitle*> _st;
+	std::unique_ptr<style::TextStyle> _textStyle;
 	object_ptr<Ui::PlainShadow> _shadow;
 	QString _text;
-	int _textWidth = 0;
+	Ui::Text::String _string;
 	int _controlsRight = 0;
-	QFont _font;
 
 };
 

ui/platform/mac/ui_window_title_mac.mm

@@ -8,6 +8,7 @@
 
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/shadow.h"
+#include "ui/painter.h"
 #include "ui/ui_utility.h"
 #include "base/debug_log.h"
 #include "styles/style_widgets.h"
@@ -27,10 +28,12 @@ TitleWidget::TitleWidget(not_null<RpWidget*> parent, int height)
 	init(height);
 }
 
+TitleWidget::~TitleWidget() = default;
+
 void TitleWidget::setText(const QString &text) {
 	if (_text != text) {
 		_text = text;
-		_textWidth = QFontMetrics(_font).horizontalAdvance(_text);
+		_string.setText(textStyle(), text);
 		update();
 	}
 }
@@ -48,6 +51,10 @@ bool TitleWidget::shouldBeHidden() const {
 	return !_st->height;
 }
 
+const style::TextStyle &TitleWidget::textStyle() const {
+	return *_textStyle;
+}
+
 QString TitleWidget::text() const {
 	return _text;
 }
@@ -64,51 +71,55 @@ void TitleWidget::init(int height) {
 		setGeometry(0, 0, width, height);
 	}, lifetime());
 
+	const auto setFromFont = [&](const style::font &font) {
+		_textStyle = std::make_unique<style::TextStyle>(style::TextStyle{
+			.font = font,
+			.linkFont = font,
+			.linkFontOver = font,
+		});
+	};
+
 	const auto families = QStringList{
 		u".AppleSystemUIFont"_q,
 		u".SF NS Text"_q,
 		u"Helvetica Neue"_q,
 	};
 	for (auto family : families) {
-		_font.setFamily(family);
-		if (QFontInfo(_font).family() == _font.family()) {
+		auto font = QFont();
+		font.setFamily(family);
+		if (QFontInfo(font).family() == font.family()) {
 			static const auto logged = [&] {
 				LOG(("Title Font: %1").arg(family));
 				return true;
 			}();
+			const auto apple = (family == u".AppleSystemUIFont"_q);
+			setFromFont(style::font(
+				apple ? 13 : (height * 15) / 24,
+				apple ? style::internal::FontBold : 0,
+				family));
 			break;
 		}
 	}
-
-	if (QFontInfo(_font).family() != _font.family()) {
-		_font = st::semiboldFont;
-		_font.setPixelSize(13);
-	} else if (_font.family() == u".AppleSystemUIFont"_q) {
-		_font.setBold(true);
-		_font.setPixelSize(13);
-	} else {
-		_font.setPixelSize((height * 15) / 24);
+	if (!_textStyle) {
+		setFromFont(style::font(13, style::internal::FontSemibold, 0));
 	}
 }
 
 void TitleWidget::paintEvent(QPaintEvent *e) {
-	QPainter p(this);
+	Painter p(this);
 
 	const auto active = isActiveWindow();
 	p.fillRect(rect(), active ? _st->bgActive : _st->bg);
 
-	p.setFont(_font);
 	p.setPen(active ? _st->fgActive : _st->fg);
 
-	if ((width() - _controlsRight * 2) < _textWidth) {
-		const auto elided = QFontMetrics(_font).elidedText(
-			_text,
-			Qt::ElideRight,
-			width() - _controlsRight);
-		const auto padding = QMargins(_controlsRight, 0, 0, 0);
-		p.drawText(rect() - padding, elided, style::al_left);
+	const auto top = (height() - _textStyle->font->height) / 2;
+	if ((width() - _controlsRight * 2) < _string.maxWidth()) {
+		const auto left = _controlsRight;
+		_string.drawElided(p, left, top, width() - left);
 	} else {
-		p.drawText(rect(), _text, style::al_center);
+		const auto left = (width() - _string.maxWidth()) / 2;
+		_string.draw(p, left, top, width() - left);
 	}
 }
 

ui/platform/ui_platform_window.cpp

@@ -205,6 +205,10 @@ void BasicWindowHelper::setBodyTitleArea(
 	_bodyTitleAreaTestMethod = std::move(testMethod);
 }
 
+const style::TextStyle &BasicWindowHelper::titleTextStyle() const {
+	return st::defaultWindowTitle.style;
+}
+
 QMargins BasicWindowHelper::nativeFrameMargins() const {
 	const auto inner = window()->geometry();
 	const auto outer = window()->frameGeometry();

ui/platform/ui_platform_window.h

@@ -12,6 +12,7 @@
 
 namespace style {
 struct WindowTitle;
+struct TextStyle;
 } // namespace style
 
 namespace Ui {
@@ -62,6 +63,8 @@ public:
 	virtual int manualRoundingRadius() const;
 	void setBodyTitleArea(Fn<WindowTitleHitTestFlags(QPoint)> testMethod);
 
+	[[nodiscard]] virtual const style::TextStyle &titleTextStyle() const;
+
 protected:
 	[[nodiscard]] WindowTitleHitTestFlags bodyTitleAreaHit(
 			QPoint point) const {

ui/style/style_core_custom_font.cpp

@@ -26,7 +26,7 @@ void SetCustomFonts(const CustomFont &regular, const CustomFont &bold) {
 	BoldFont = bold;
 }
 
-QFont ResolveFont(uint32 flags, int size) {
+QFont ResolveFont(const QString &familyOverride, uint32 flags, int size) {
 	static auto Database = QFontDatabase();
 
 	const auto bold = ((flags & FontBold) || (flags & FontSemibold));
@@ -35,7 +35,12 @@ QFont ResolveFont(uint32 flags, int size) {
 	const auto useCustom = !custom.family.isEmpty();
 
 	auto result = QFont(QGuiApplication::font().family());
-	if (flags & FontMonospace) {
+	if (!familyOverride.isEmpty()) {
+		result.setFamily(familyOverride);
+		if (bold) {
+			result.setBold(true);
+		}
+	} else if (flags & FontMonospace) {
 		result.setFamily(MonospaceFont());
 	} else if (useCustom) {
 		const auto sizes = Database.smoothSizes(custom.family, custom.style);

ui/style/style_core_custom_font.h

@@ -40,6 +40,6 @@ inline bool operator>=(const CustomFont &a, const CustomFont &b) {
 
 void SetCustomFonts(const CustomFont &regular, const CustomFont &bold);
 
-[[nodiscard]] QFont ResolveFont(uint32 flags, int size);
+[[nodiscard]] QFont ResolveFont(const QString &familyOverride, uint32 flags, int size);
 
 } // namespace style

ui/style/style_core_font.cpp

@@ -300,7 +300,7 @@ int CeilTextWidth(const QFont &font, const QString &text) {
 }
 
 FontData::FontData(int size, uint32 flags, int family, Font *other)
-: f(ResolveFont(flags, size))
+: f(ResolveFont(family ? fontFamilies[family] : QString(), flags, size))
 , _m(f)
 , _size(size)
 , _flags(flags)

ui/widgets/rp_window.cpp

@@ -103,4 +103,8 @@ int RpWindow::manualRoundingRadius() const {
 	return _helper->manualRoundingRadius();
 }
 
+const style::TextStyle &RpWindow::titleTextStyle() const {
+	return _helper->titleTextStyle();
+}
+
 } // namespace Ui

ui/widgets/rp_window.h

@@ -11,6 +11,7 @@
 
 namespace style {
 struct WindowTitle;
+struct TextStyle;
 } // namespace style
 
 namespace Ui {
@@ -68,6 +69,8 @@ public:
 	[[nodiscard]] int manualRoundingRadius() const;
 	void setBodyTitleArea(Fn<WindowTitleHitTestFlags(QPoint)> testMethod);
 
+	[[nodiscard]] const style::TextStyle &titleTextStyle() const;
+
 private:
 	const std::unique_ptr<Platform::BasicWindowHelper> _helper;
 

ui/widgets/widgets.style

@@ -555,6 +555,7 @@ WindowTitle {
 	bgActive: color;
 	fg: color;
 	fgActive: color;
+	style: TextStyle;
 	minimize: IconButton;
 	minimizeIconActive: icon;
 	minimizeIconActiveOver: icon;
@@ -1420,6 +1421,11 @@ defaultWindowTitle: WindowTitle {
 	bgActive: titleBgActive;
 	fg: titleFg;
 	fgActive: titleFgActive;
+	style: TextStyle(defaultTextStyle) {
+		font: font(semibold 12px);
+		linkFont: font(semibold 12px);
+		linkFontOver: font(semibold 12px underline);
+	}
 	minimize: IconButton(windowTitleButton) {
 		icon: icon {
 			{ windowTitleButtonSize, titleButtonBg },