Add Windows 11 snap layouts to custom TitleControls.

ui/platform/ui_platform_window.cpp

@@ -33,6 +33,9 @@ BasicWindowHelper::BasicWindowHelper(not_null<RpWidget*> window)
 	_window->setWindowFlag(Qt::Window);
 }
 
+void BasicWindowHelper::initInWindow(not_null<RpWindow*> window) {
+}
+
 not_null<RpWidget*> BasicWindowHelper::body() {
 	return _window;
 }
@@ -49,6 +52,19 @@ rpl::producer<int> BasicWindowHelper::additionalContentPaddingValue() const {
 	return rpl::single(0);
 }
 
+auto BasicWindowHelper::hitTestRequests() const
+-> rpl::producer<not_null<HitTestRequest*>> {
+	return rpl::never<not_null<HitTestRequest*>>();
+}
+
+rpl::producer<HitTestResult> BasicWindowHelper::systemButtonOver() const {
+	return rpl::never<HitTestResult>();
+}
+
+rpl::producer<HitTestResult> BasicWindowHelper::systemButtonDown() const {
+	return rpl::never<HitTestResult>();
+}
+
 void BasicWindowHelper::setTitle(const QString &title) {
 	_window->setWindowTitle(title);
 }

ui/platform/ui_platform_window.h

@@ -15,23 +15,37 @@ struct WindowTitle;
 namespace Ui {
 
 class RpWidget;
+class RpWindow;
 enum class WindowTitleHitTestFlag;
 using WindowTitleHitTestFlags = base::flags<WindowTitleHitTestFlag>;
 
 namespace Platform {
 
+struct HitTestRequest;
+enum class HitTestResult;
 class DefaultTitleWidget;
 
 class BasicWindowHelper {
 public:
 	explicit BasicWindowHelper(not_null<RpWidget*> window);
 	virtual ~BasicWindowHelper() = default;
 
+	[[nodiscard]] not_null<RpWidget*> window() const {
+		return _window;
+	}
+
+	[[nodiscard]] virtual void initInWindow(not_null<RpWindow*> window);
 	[[nodiscard]] virtual not_null<RpWidget*> body();
 	[[nodiscard]] virtual QMargins frameMargins();
 	[[nodiscard]] virtual int additionalContentPadding() const;
 	[[nodiscard]] virtual auto additionalContentPaddingValue() const
 		-> rpl::producer<int>;
+	[[nodiscard]] virtual auto hitTestRequests() const
+		-> rpl::producer<not_null<HitTestRequest*>>;
+	[[nodiscard]] virtual auto systemButtonOver() const
+		-> rpl::producer<HitTestResult>;
+	[[nodiscard]] virtual auto systemButtonDown() const
+		-> rpl::producer<HitTestResult>;
 	virtual void setTitle(const QString &title);
 	virtual void setTitleStyle(const style::WindowTitle &st);
 	virtual void setNativeFrame(bool enabled);
@@ -46,9 +60,6 @@ class BasicWindowHelper {
 	void setBodyTitleArea(Fn<WindowTitleHitTestFlags(QPoint)> testMethod);
 
 protected:
-	[[nodiscard]] not_null<RpWidget*> window() const {
-		return _window;
-	}
 	[[nodiscard]] WindowTitleHitTestFlags bodyTitleAreaHit(
 			QPoint point) const {
 		return _bodyTitleAreaTestMethod
@@ -111,7 +122,7 @@ class DefaultWindowHelper final : public QObject, public BasicWindowHelper {
 	return std::make_unique<DefaultWindowHelper>(window);
 }
 
-bool NativeWindowFrameSupported();
+[[nodiscard]] bool NativeWindowFrameSupported();
 
 } // namespace Platform
 } // namespace Ui

ui/platform/ui_platform_window_title.cpp

@@ -15,6 +15,7 @@
 #include "styles/palette.h"
 #include "base/algorithm.h"
 #include "base/event_filter.h"
+#include "base/platform/base_platform_info.h"
 
 #include <QtGui/QPainter>
 #include <QtGui/QtEvents>
@@ -36,6 +37,34 @@ void RemoveDuplicates(std::vector<T> &v) {
 
 } // namespace
 
+bool SemiNativeSystemButtonProcessing() {
+	return ::Platform::IsWindows11OrGreater();
+}
+
+void SetupSemiNativeSystemButtons(
+		not_null<TitleControls*> controls,
+		not_null<RpWindow*> window,
+		rpl::lifetime &lifetime,
+		Fn<bool()> filter) {
+	if (!SemiNativeSystemButtonProcessing()) {
+		return;
+	}
+
+	window->systemButtonOver(
+	) | rpl::filter([=](HitTestResult button) {
+		return !filter || filter() || (button == HitTestResult::None);
+	}) | rpl::start_with_next([=](HitTestResult button) {
+		controls->buttonOver(button);
+	}, lifetime);
+
+	window->systemButtonDown(
+	) | rpl::filter([=](HitTestResult button) {
+		return !filter || filter() || (button == HitTestResult::None);
+	}) | rpl::start_with_next([=](HitTestResult button) {
+		controls->buttonDown(button);
+	}, lifetime);
+}
+
 class TitleControls::Button final : public IconButton {
 public:
 	using IconButton::IconButton;
@@ -216,12 +245,12 @@ void TitleControls::buttonOver(HitTestResult testResult) {
 	update(_close, HitTestResult::Close);
 }
 
-void TitleControls::buttonDown(HitTestResult testResult, bool down) {
+void TitleControls::buttonDown(HitTestResult testResult) {
 	const auto update = [&](
 			const object_ptr<Button> &button,
 			HitTestResult buttonTestResult) {
 		if (const auto raw = button.data()) {
-			raw->setDown(testResult == buttonTestResult && down);
+			raw->setDown(testResult == buttonTestResult);
 		}
 	};
 	update(_minimize, HitTestResult::Minimize);
@@ -456,16 +485,30 @@ std::unique_ptr<SeparateTitleControls> SetupSeparateTitleControls(
 		st,
 		std::move(maximize));
 
+	const auto raw = result.get();
+	auto &lifetime = raw->wrap.lifetime();
 	rpl::combine(
 		window->body()->widthValue(),
 		window->additionalContentPaddingValue()
-	) | rpl::start_with_next([raw = result.get()](int width, int padding) {
+	) | rpl::start_with_next([=](int width, int padding) {
 		raw->wrap.setGeometry(
 			padding,
 			0,
 			width - 2 * padding,
 			raw->controls.geometry().height());
-	}, result->wrap.lifetime());
+	}, lifetime);
+
+	window->hitTestRequests(
+	) | rpl::start_with_next([=](not_null<HitTestRequest*> request) {
+		const auto origin = raw->wrap.pos();
+		const auto relative = request->point - origin;
+		const auto controlsResult = raw->controls.hitTest(relative);
+		if (controlsResult != HitTestResult::None) {
+			request->result = controlsResult;
+		}
+	}, lifetime);
+
+	SetupSemiNativeSystemButtons(&raw->controls, window, lifetime);
 
 	return result;
 }

ui/platform/ui_platform_window_title.h

@@ -24,6 +24,8 @@ class RpWindow;
 
 namespace Platform {
 
+class TitleControls;
+
 enum class HitTestResult {
 	None = 0,
 	Client,
@@ -41,6 +43,18 @@ enum class HitTestResult {
 	TopLeft,
 };
 
+struct HitTestRequest {
+	QPoint point;
+	HitTestResult result = HitTestResult::Client;
+};
+
+[[nodiscard]] bool SemiNativeSystemButtonProcessing();
+void SetupSemiNativeSystemButtons(
+	not_null<TitleControls*> controls,
+	not_null<RpWindow*> window,
+	rpl::lifetime &lifetime,
+	Fn<bool()> filter = nullptr);
+
 class TitleControls final {
 public:
 	TitleControls(
@@ -57,7 +71,7 @@ class TitleControls final {
 	[[nodiscard]] HitTestResult hitTest(QPoint point) const;
 
 	void buttonOver(HitTestResult testResult);
-	void buttonDown(HitTestResult testResult, bool down);
+	void buttonDown(HitTestResult testResult);
 
 	enum class Control {
 		Unknown,

ui/platform/win/ui_window_title_win.cpp

@@ -9,6 +9,7 @@
 #include "ui/platform/win/ui_window_win.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/shadow.h"
+#include "ui/widgets/rp_window.h"
 #include "ui/ui_utility.h"
 #include "base/platform/base_platform_info.h"
 #include "base/platform/win/base_windows_safe_library.h"
@@ -68,6 +69,19 @@ TitleWidget::TitleWidget(not_null<RpWidget*> parent)
 	}, lifetime());
 }
 
+void TitleWidget::initInWindow(not_null<RpWindow*> window) {
+	window->hitTestRequests(
+	) | rpl::filter([=](not_null<HitTestRequest*> request) {
+		return !isHidden() && geometry().contains(request->point);
+	}) | rpl::start_with_next([=](not_null<HitTestRequest*> request) {
+		request->result = hitTest(request->point);
+	}, lifetime());
+
+	SetupSemiNativeSystemButtons(&_controls, window, lifetime(), [=] {
+		return !isHidden() && (_controls.st()->height > 0);
+	});
+}
+
 TitleWidget::~TitleWidget() = default;
 
 void TitleWidget::setText(const QString &text) {
@@ -113,27 +127,19 @@ void TitleWidget::resizeEvent(QResizeEvent *e) {
 }
 
 HitTestResult TitleWidget::hitTest(QPoint point) const {
-	const auto titleResult = _controls.hitTest(point);
-	if (titleResult != HitTestResult::None) {
-		return titleResult;
-	} else if (rect().contains(point)) {
-		return HitTestResult::Caption;
-	}
-	return HitTestResult::None;
+	const auto origin = _paddingHelper
+		? _paddingHelper->controlsParent.pos()
+		: QPoint();
+	const auto controlsResult = _controls.hitTest(point - origin);
+	return (controlsResult != HitTestResult::None)
+		? controlsResult
+		: HitTestResult::Caption;
 }
 
 bool TitleWidget::additionalPaddingRequired() const {
 	return _paddingHelper && !isHidden();
 }
 
-void TitleWidget::sysButtonOver(HitTestResult testResult) {
-	_controls.buttonOver(testResult);
-}
-
-void TitleWidget::sysButtonDown(HitTestResult testResult, bool down) {
-	_controls.buttonDown(testResult, down);
-}
-
 void TitleWidget::refreshAdditionalPaddings() {
 	if (!additionalPaddingRequired()) {
 		return;

ui/platform/win/ui_window_title_win.h

@@ -21,6 +21,7 @@ struct WindowTitle;
 
 namespace Ui {
 
+class RpWindow;
 class IconButton;
 class PlainShadow;
 
@@ -31,10 +32,10 @@ class TitleWidget : public RpWidget {
 	explicit TitleWidget(not_null<RpWidget*> parent);
 	~TitleWidget();
 
+	void initInWindow(not_null<RpWindow*> window);
 	void setText(const QString &text);
 	void setStyle(const style::WindowTitle &st);
 	[[nodiscard]] not_null<const style::WindowTitle*> st() const;
-	[[nodiscard]] HitTestResult hitTest(QPoint point) const;
 	void setResizeEnabled(bool enabled);
 
 	void refreshAdditionalPaddings();
@@ -45,9 +46,6 @@ class TitleWidget : public RpWidget {
 	[[nodiscard]] int additionalPadding() const;
 	[[nodiscard]] rpl::producer<int> additionalPaddingValue() const;
 
-	void sysButtonOver(HitTestResult testResult);
-	void sysButtonDown(HitTestResult testResult, bool down);
-
 protected:
 	void paintEvent(QPaintEvent *e) override;
 	void resizeEvent(QResizeEvent *e) override;
@@ -57,6 +55,7 @@ class TitleWidget : public RpWidget {
 private:
 	struct PaddingHelper;
 
+	[[nodiscard]] HitTestResult hitTest(QPoint point) const;
 	[[nodiscard]] bool additionalPaddingRequired() const;
 	void refreshGeometryWithWidth(int width);
 	void setAdditionalPadding(int padding);