Updated lib_ui sources to TDesktop version 2.6

2021-02-24 08:07:24 +03:00 · 2021-02-24 08:07:24 +03:00 · f04ec94710
commit f04ec94710
parent eb19141480 7d18c8687b
64 changed files with 2982 additions and 915 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -69,12 +69,16 @@ PRIVATE
    ui/layers/layer_manager.h
    ui/layers/layer_widget.cpp
    ui/layers/layer_widget.h
+    ui/paint/arcs.cpp
+    ui/paint/arcs.h
    ui/paint/blob.cpp
    ui/paint/blob.h
    ui/paint/blobs.cpp
    ui/paint/blobs.h
    ui/paint/blobs_linear.cpp
    ui/paint/blobs_linear.h
+    ui/platform/linux/ui_linux_wayland_integration.cpp
+    ui/platform/linux/ui_linux_wayland_integration.h
    ui/platform/linux/ui_window_linux.cpp
    ui/platform/linux/ui_window_linux.h
    ui/platform/linux/ui_utility_linux.cpp
@ -93,8 +97,11 @@ PRIVATE
    ui/platform/win/ui_window_win.h
    ui/platform/win/ui_utility_win.cpp
    ui/platform/win/ui_utility_win.h
+    ui/platform/ui_platform_window_title.cpp
+    ui/platform/ui_platform_window_title.h
    ui/platform/ui_platform_window.cpp
    ui/platform/ui_platform_window.h
+    ui/platform/ui_platform_utility.cpp
    ui/platform/ui_platform_utility.h
    ui/style/style_core.cpp
    ui/style/style_core.h
@ -146,8 +153,18 @@ PRIVATE
    ui/widgets/input_fields.h
    ui/widgets/labels.cpp
    ui/widgets/labels.h
-    ui/widgets/menu.cpp
-    ui/widgets/menu.h
+    ui/widgets/menu/menu.cpp
+    ui/widgets/menu/menu.h
+    ui/widgets/menu/menu_action.cpp
+    ui/widgets/menu/menu_action.h
+    ui/widgets/menu/menu_common.cpp
+    ui/widgets/menu/menu_common.h
+    ui/widgets/menu/menu_item_base.cpp
+    ui/widgets/menu/menu_item_base.h
+    ui/widgets/menu/menu_separator.cpp
+    ui/widgets/menu/menu_separator.h
+    ui/widgets/menu/menu_toggle.cpp
+    ui/widgets/menu/menu_toggle.h
    ui/widgets/popup_menu.cpp
    ui/widgets/popup_menu.h
    ui/widgets/scroll_area.cpp
@ -216,6 +233,11 @@ if (NOT DESKTOP_APP_USE_PACKAGED_FONTS)
    nice_target_sources(lib_ui ${src_loc} PRIVATE fonts/fonts.qrc)
 endif()

+if (DESKTOP_APP_DISABLE_WAYLAND_INTEGRATION)
+    remove_target_sources(Telegram ${src_loc} ui/platform/linux/ui_linux_wayland_integration.cpp)
+    nice_target_sources(Telegram ${src_loc} PRIVATE ui/platform/linux/ui_linux_wayland_integration_dummy.cpp)
+endif()
+
 target_include_directories(lib_ui
 PUBLIC
    ${src_loc}
--- a/icons/calls/call_shadow_left.png
+++ b/icons/calls/call_shadow_left.png
--- a/icons/calls/call_shadow_left@2x.png
+++ b/icons/calls/call_shadow_left@2x.png
--- a/icons/calls/call_shadow_left@3x.png
+++ b/icons/calls/call_shadow_left@3x.png
--- a/icons/calls/call_shadow_top.png
+++ b/icons/calls/call_shadow_top.png
--- a/icons/calls/call_shadow_top@2x.png
+++ b/icons/calls/call_shadow_top@2x.png
--- a/icons/calls/call_shadow_top@3x.png
+++ b/icons/calls/call_shadow_top@3x.png
--- a/icons/calls/call_shadow_top_left.png
+++ b/icons/calls/call_shadow_top_left.png
--- a/icons/calls/call_shadow_top_left@2x.png
+++ b/icons/calls/call_shadow_top_left@2x.png
--- a/icons/calls/call_shadow_top_left@3x.png
+++ b/icons/calls/call_shadow_top_left@3x.png
--- a/ui/colors.palette
+++ b/ui/colors.palette
@ -636,6 +636,8 @@ sideBarBadgeBg: #5eb5f7; // filters side bar badge background
 sideBarBadgeBgMuted: #8393a3; // filters side bar unimportant badge background
 sideBarBadgeFg: #ffffff; // filters side bar badge text

+songCoverOverlayFg: #00000066; // song cover overlay
+
 // kotatogram
 ktgTopBarBg: topBarBg; // Kotatogram: top bar background
 ktgTopBarNameFg: dialogsNameFg; // Kotatogram: top bar name text
--- a/ui/effects/cross_line.cpp
+++ b/ui/effects/cross_line.cpp
@ -43,11 +43,14 @@ void CrossLineAnimation::paint(
 			_st.icon.paint(p, left, top, _st.icon.width());
 		}
 	} else if (progress == 1.) {
-		if (_completeCross.isNull()) {
+		auto &complete = colorOverride
+			? _completeCrossOverride
+			: _completeCross;
+		if (complete.isNull()) {
 			fillFrame(progress, colorOverride);
-			_completeCross = _frame;
+			complete = _frame;
 		}
-		p.drawImage(left, top, _completeCross);
+		p.drawImage(left, top, complete);
 	} else {
 		fillFrame(progress, colorOverride);
 		p.drawImage(left, top, _frame);
@ -94,6 +97,8 @@ void CrossLineAnimation::fillFrame(

 void CrossLineAnimation::invalidate() {
 	_completeCross = QImage();
+	_completeCrossOverride = QImage();
+	_strokePen = QPen(_st.fg, _st.stroke, Qt::SolidLine, Qt::RoundCap);
 }

 } // namespace Ui
--- a/ui/effects/cross_line.h
+++ b/ui/effects/cross_line.h
@ -39,10 +39,11 @@ private:
 	const style::CrossLineAnimation &_st;
 	const bool _reversed;
 	const QPen _transparentPen;
-	const QPen _strokePen;
+	QPen _strokePen;
 	QLineF _line;
 	QImage _frame;
 	QImage _completeCross;
+	QImage _completeCrossOverride;

 };

--- a/ui/paint/arcs.cpp
+++ b/ui/paint/arcs.cpp
@ -0,0 +1,233 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/paint/arcs.h"
+
+#include "ui/effects/animation_value.h"
+#include "ui/painter.h"
+
+namespace Ui::Paint {
+namespace {
+
+inline float64 InterpolateF(float a, float b, float64 b_ratio) {
+	return a + float64(b - a) * b_ratio;
+};
+
+QRectF InterpolatedRect(const QRectF &r1, const QRectF &r2, float64 ratio) {
+	return QRectF(
+		InterpolateF(r1.x(), r2.x(), ratio),
+		InterpolateF(r1.y(), r2.y(), ratio),
+		InterpolateF(r1.width(), r2.width(), ratio),
+		InterpolateF(r1.height(), r2.height(), ratio));
+}
+
+} // namespace
+
+ArcsAnimation::ArcsAnimation(
+	const style::ArcsAnimation &st,
+	std::vector<float> thresholds,
+	float64 startValue,
+	Direction direction)
+: _st(st)
+, _direction(direction)
+, _startAngle(16
+	* (st.deltaAngle
+		+ ((direction == Direction::Up)
+			? 90
+			: (direction == Direction::Down)
+			? 270
+			: (direction == Direction::Left)
+			? 180
+			: 0)))
+, _spanAngle(-st.deltaAngle * 2 * 16)
+, _emptyRect(computeArcRect(0))
+, _currentValue(startValue) {
+	initArcs(std::move(thresholds));
+}
+
+void ArcsAnimation::initArcs(std::vector<float> thresholds) {
+	const auto count = thresholds.size();
+	_arcs.reserve(count);
+
+	for (auto i = 0; i < count; i++) {
+		const auto threshold = thresholds[i];
+		const auto progress = (threshold > _currentValue) ? 1. : 0.;
+		auto arc = Arc{
+			.rect = computeArcRect(i + 1),
+			.threshold = threshold,
+			.progress = progress,
+		};
+		_arcs.push_back(std::move(arc));
+	}
+}
+
+bool ArcsAnimation::isHorizontal() const {
+	return _direction == Direction::Left || _direction == Direction::Right;
+}
+
+QRectF ArcsAnimation::computeArcRect(int index) const {
+	const auto w = _st.startWidth + _st.deltaWidth * index;
+	const auto h = _st.startHeight + _st.deltaHeight * index;
+	if (isHorizontal()) {
+		auto rect = QRectF(0, -h / 2.0, w, h);
+		if (_direction == Direction::Right) {
+			rect.moveRight(index * _st.space);
+		} else {
+			rect.moveLeft(-index * _st.space);
+		}
+		return rect;
+	} else {
+		auto rect = QRectF(-w / 2.0, 0, w, h);
+		if (_direction == Direction::Up) {
+			rect.moveTop(-index * _st.space);
+		} else {
+			rect.moveBottom(index * _st.space);
+		}
+		return rect;
+	}
+	return QRectF();
+}
+
+void ArcsAnimation::update(crl::time now) {
+	for (auto &arc : _arcs) {
+		if (!isArcFinished(arc)) {
+			const auto progress = std::clamp(
+				(now - arc.startTime) / float64(_st.duration),
+				0.,
+				1.);
+			arc.progress = (arc.threshold > _currentValue)
+				? progress
+				: (1. - progress);
+		}
+	}
+	if (isFinished()) {
+		_stopUpdateRequests.fire({});
+	}
+}
+
+
+void ArcsAnimation::setValue(float64 value) {
+	if (_currentValue == value) {
+		return;
+	}
+	const auto previousValue = _currentValue;
+	_currentValue = value;
+	if (!isFinished()) {
+		const auto now = crl::now();
+		_startUpdateRequests.fire({});
+		for (auto &arc : _arcs) {
+			updateArcStartTime(arc, previousValue, now);
+		}
+	}
+}
+
+void ArcsAnimation::updateArcStartTime(
+		Arc &arc,
+		float64 previousValue,
+		crl::time now) {
+	if ((arc.progress == 0.) || (arc.progress == 1.)) {
+		arc.startTime = isArcFinished(arc) ? 0 : now;
+		return;
+	}
+	const auto isPreviousToHide = (arc.threshold <= previousValue); // 0 -> 1
+	const auto isCurrentToHide = (arc.threshold <= _currentValue);
+	if (isPreviousToHide != isCurrentToHide) {
+		const auto passedTime = _st.duration * arc.progress;
+		const auto newDelta = isCurrentToHide
+			? (_st.duration - passedTime)
+			: passedTime;
+		arc.startTime = now - newDelta;
+	}
+}
+
+float ArcsAnimation::width() const {
+	if (_arcs.empty()) {
+		return 0;
+	}
+	for (const auto &arc : ranges::view::reverse(_arcs)) {
+		if ((arc.progress != 1.)) {
+			return arc.rect.x() + arc.rect.width();
+		}
+	}
+	return 0;
+}
+
+float ArcsAnimation::finishedWidth() const {
+	if (_arcs.empty()) {
+		return 0;
+	}
+	for (const auto &arc : ranges::view::reverse(_arcs)) {
+		if (arc.threshold <= _currentValue) {
+			return arc.rect.x() + arc.rect.width();
+		}
+	}
+	return 0;
+}
+
+float ArcsAnimation::maxWidth() const {
+	if (_arcs.empty()) {
+		return 0;
+	}
+	const auto &r = _arcs.back().rect;
+	return r.x() + r.width();
+}
+
+float ArcsAnimation::height() const {
+	return _arcs.empty()
+		? 0
+		: _arcs.back().rect.height();
+}
+
+rpl::producer<> ArcsAnimation::startUpdateRequests() {
+	return _startUpdateRequests.events();
+}
+
+rpl::producer<> ArcsAnimation::stopUpdateRequests() {
+	return _stopUpdateRequests.events();
+}
+
+bool ArcsAnimation::isFinished() const {
+	return ranges::all_of(
+		_arcs,
+		[=](const Arc &arc) { return isArcFinished(arc); });
+}
+
+bool ArcsAnimation::isArcFinished(const Arc &arc) const {
+	return ((arc.threshold > _currentValue) && (arc.progress == 1.))
+		|| ((arc.threshold <= _currentValue) && (arc.progress == 0.));
+}
+
+void ArcsAnimation::paint(Painter &p, std::optional<QColor> colorOverride) {
+	PainterHighQualityEnabler hq(p);
+	QPen pen;
+	if (_strokeRatio) {
+		pen.setWidthF(_st.stroke * _strokeRatio);
+	} else {
+		pen.setWidth(_st.stroke);
+	}
+	pen.setCapStyle(Qt::RoundCap);
+	pen.setColor(colorOverride ? (*colorOverride) : _st.fg->c);
+	p.setPen(pen);
+	for (auto i = 0; i < _arcs.size(); i++) {
+		const auto &arc = _arcs[i];
+		const auto previousRect = (!i) ? _emptyRect : _arcs[i - 1].rect;
+		const auto progress = arc.progress;
+		const auto opactity = (1. - progress);
+		p.setOpacity(opactity * opactity);
+		const auto rect = (progress == 0.)
+			? arc.rect
+			: (progress == 1.)
+			? previousRect
+			: InterpolatedRect(arc.rect, previousRect, progress);
+		p.drawArc(rect, _startAngle, _spanAngle);
+	}
+}
+
+void ArcsAnimation::setStrokeRatio(float ratio) {
+	_strokeRatio = ratio;
+}
+
+} // namespace Ui::Paint
--- a/ui/paint/arcs.h
+++ b/ui/paint/arcs.h
@ -0,0 +1,85 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "styles/style_widgets.h"
+
+class Painter;
+
+namespace Ui::Paint {
+
+class ArcsAnimation {
+public:
+
+	enum class Direction {
+		Up,
+		Down,
+		Left,
+		Right,
+	};
+
+	ArcsAnimation(
+		const style::ArcsAnimation &st,
+		std::vector<float> thresholds,
+		float64 startValue,
+		Direction direction);
+
+	void paint(
+		Painter &p,
+		std::optional<QColor> colorOverride = std::nullopt);
+
+	void setValue(float64 value);
+
+	rpl::producer<> startUpdateRequests();
+	rpl::producer<> stopUpdateRequests();
+
+	void update(crl::time now);
+
+	bool isFinished() const;
+
+	float width() const;
+	float maxWidth() const;
+	float finishedWidth() const;
+	float height() const;
+
+	void setStrokeRatio(float ratio);
+
+private:
+	struct Arc {
+		QRectF rect;
+		float threshold;
+		crl::time startTime = 0;
+		float64 progress = 0.;
+	};
+
+	void initArcs(std::vector<float> thresholds);
+	QRectF computeArcRect(int index) const;
+	bool isHorizontal() const;
+
+	bool isArcFinished(const Arc &arc) const;
+	void updateArcStartTime(
+		Arc &arc,
+		float64 previousValue,
+		crl::time now);
+
+	const style::ArcsAnimation &_st;
+	const Direction _direction;
+	const int _startAngle;
+	const int _spanAngle;
+	const QRectF _emptyRect;
+
+	float64 _currentValue = 0.;
+	float _strokeRatio = 0.;
+
+	rpl::event_stream<> _startUpdateRequests;
+	rpl::event_stream<> _stopUpdateRequests;
+
+	std::vector<Arc> _arcs;
+
+};
+
+} // namespace Ui::Paint
--- a/ui/paint/blob.cpp
+++ b/ui/paint/blob.cpp
@ -52,11 +52,12 @@ void Blob::generateSingleValues(int i) {
 		+ kSegmentSpeedDiff * std::abs(RandomAdditional());
 }

-void Blob::update(float level, float speedScale) {
+void Blob::update(float level, float speedScale, float64 rate) {
 	for (auto i = 0; i < _segmentsCount; i++) {
 		auto &segment = segmentAt(i);
-		segment.progress += (segment.speed * _minSpeed)
-			+ level * segment.speed * _maxSpeed * speedScale;
+		segment.progress += (_minSpeed + level * _maxSpeed * speedScale)
+			* segment.speed
+			* rate;
 		if (segment.progress >= 1) {
 			generateSingleValues(i);
 			generateTwoValues(i);
@ -152,9 +153,9 @@ void RadialBlob::generateTwoValues(int i) {
 	radius.setNext(_radiuses.min + std::abs(RandomAdditional()) * radDiff);
 }

-void RadialBlob::update(float level, float speedScale) {
+void RadialBlob::update(float level, float speedScale, float64 rate) {
 	_scale = level;
-	Blob::update(level, speedScale);
+	Blob::update(level, speedScale, rate);
 }

 Blob::Segment &RadialBlob::segmentAt(int i) {
--- a/ui/paint/blob.h
+++ b/ui/paint/blob.h
@ -20,7 +20,7 @@ public:
 	Blob(int n, float minSpeed = 0, float maxSpeed = 0);
 	virtual ~Blob() = default;

-	void update(float level, float speedScale);
+	void update(float level, float speedScale, float64 rate);
 	void generateBlob();

 	void setRadiuses(Radiuses values);
@ -59,7 +59,7 @@ public:
 	RadialBlob(int n, float minScale, float minSpeed = 0, float maxSpeed = 0);

 	void paint(Painter &p, const QBrush &brush, float outerScale = 1.);
-	void update(float level, float speedScale);
+	void update(float level, float speedScale, float64 rate);

 private:
 	struct Segment : Blob::Segment {
--- a/ui/paint/blobs.cpp
+++ b/ui/paint/blobs.cpp
@ -10,6 +10,13 @@

 namespace Ui::Paint {

+namespace {
+
+constexpr auto kRateLimitF = 1000. / 60.;
+constexpr auto kRateLimit = int(kRateLimitF + 0.5); // Round.
+
+} // namespace
+
 Blobs::Blobs(
 	std::vector<BlobData> blobDatas,
 	float levelDuration,
@ -76,7 +83,6 @@ void Blobs::resetLevel() {
 void Blobs::paint(Painter &p, const QBrush &brush, float outerScale) {
 	const auto opacity = p.opacity();
 	for (auto i = 0; i < _blobs.size(); i++) {
-		_blobs[i].update(_levelValue.current(), _blobDatas[i].speedScale);
 		const auto alpha = _blobDatas[i].alpha;
 		if (alpha != 1.) {
 			p.setOpacity(opacity * alpha);
@ -89,7 +95,15 @@ void Blobs::paint(Painter &p, const QBrush &brush, float outerScale) {
 }

 void Blobs::updateLevel(crl::time dt) {
-	_levelValue.update((dt > 20) ? 17 : dt);
+	const auto limitedDt = (dt > 20) ? kRateLimit : dt;
+	_levelValue.update(limitedDt);
+
+	for (auto i = 0; i < _blobs.size(); i++) {
+		_blobs[i].update(
+			_levelValue.current(),
+			_blobDatas[i].speedScale,
+			limitedDt / kRateLimitF);
+	}
 }

 float64 Blobs::currentLevel() const {
--- a/ui/paint/blobs_linear.cpp
+++ b/ui/paint/blobs_linear.cpp
@ -10,6 +10,13 @@

 namespace Ui::Paint {

+namespace {
+
+constexpr auto kRateLimitF = 1000. / 60.;
+constexpr auto kRateLimit = int(kRateLimitF + 0.5); // Round.
+
+} // namespace
+
 LinearBlobs::LinearBlobs(
 	std::vector<BlobData> blobDatas,
 	float levelDuration,
@ -75,7 +82,6 @@ void LinearBlobs::paint(Painter &p, const QBrush &brush, int width) {
 	PainterHighQualityEnabler hq(p);
 	const auto opacity = p.opacity();
 	for (auto i = 0; i < _blobs.size(); i++) {
-		_blobs[i].update(_levelValue.current(), _blobDatas[i].speedScale);
 		const auto alpha = _blobDatas[i].alpha;
 		if (alpha != 1.) {
 			p.setOpacity(opacity * alpha);
@ -88,8 +94,8 @@ void LinearBlobs::paint(Painter &p, const QBrush &brush, int width) {
 }

 void LinearBlobs::updateLevel(crl::time dt) {
-	const auto d = (dt > 20) ? 17 : dt;
-	_levelValue.update(d);
+	const auto limitedDt = (dt > 20) ? kRateLimit : dt;
+	_levelValue.update(limitedDt);

 	const auto level = (float)currentLevel();
 	for (auto i = 0; i < _blobs.size(); i++) {
@ -97,6 +103,10 @@ void LinearBlobs::updateLevel(crl::time dt) {
 		_blobs[i].setRadiuses({
 			data.minRadius,
 			data.idleRadius + (data.maxRadius - data.idleRadius) * level });
+		_blobs[i].update(
+			_levelValue.current(),
+			data.speedScale,
+			limitedDt / kRateLimitF);
 	}
 }

--- a/ui/platform/linux/ui_linux_wayland_integration.cpp
+++ b/ui/platform/linux/ui_linux_wayland_integration.cpp
@ -0,0 +1,46 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "ui/platform/linux/ui_linux_wayland_integration.h"
+
+#include "base/platform/base_platform_info.h"
+
+#include <QtGui/QWindow>
+
+#include <private/qwaylanddisplay_p.h>
+#include <private/qwaylandwindow_p.h>
+#include <private/qwaylandshellsurface_p.h>
+
+using QtWaylandClient::QWaylandWindow;
+
+namespace Ui {
+namespace Platform {
+
+WaylandIntegration::WaylandIntegration() {
+}
+
+WaylandIntegration *WaylandIntegration::Instance() {
+	if (!::Platform::IsWayland()) return nullptr;
+	static WaylandIntegration instance;
+	return &instance;
+}
+
+bool WaylandIntegration::showWindowMenu(QWindow *window) {
+	if (const auto waylandWindow = static_cast<QWaylandWindow*>(
+		window->handle())) {
+		if (const auto seat = waylandWindow->display()->lastInputDevice()) {
+			if (const auto shellSurface = waylandWindow->shellSurface()) {
+				return shellSurface->showWindowMenu(seat);
+			}
+		}
+	}
+
+	return false;
+}
+
+} // namespace Platform
+} // namespace Ui
--- a/ui/platform/linux/ui_linux_wayland_integration.h
+++ b/ui/platform/linux/ui_linux_wayland_integration.h
@ -0,0 +1,25 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class QWindow;
+
+namespace Ui {
+namespace Platform {
+
+class WaylandIntegration {
+public:
+	static WaylandIntegration *Instance();
+	bool showWindowMenu(QWindow *window);
+
+private:
+	WaylandIntegration();
+};
+
+} // namespace Platform
+} // namespace Ui
--- a/ui/platform/linux/ui_linux_wayland_integration_dummy.cpp
+++ b/ui/platform/linux/ui_linux_wayland_integration_dummy.cpp
@ -0,0 +1,29 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "ui/platform/linux/ui_linux_wayland_integration.h"
+
+#include "base/platform/base_platform_info.h"
+
+namespace Ui {
+namespace Platform {
+
+WaylandIntegration::WaylandIntegration() {
+}
+
+WaylandIntegration *WaylandIntegration::Instance() {
+	if (!::Platform::IsWayland()) return nullptr;
+	static WaylandIntegration instance;
+	return &instance;
+}
+
+bool WaylandIntegration::showWindowMenu(QWindow *window) {
+	return false;
+}
+
+} // namespace Platform
+} // namespace Ui
--- a/ui/platform/linux/ui_utility_linux.cpp
+++ b/ui/platform/linux/ui_utility_linux.cpp
@ -8,16 +8,150 @@

 #include "ui/ui_log.h"
 #include "base/platform/base_platform_info.h"
+#include "base/platform/linux/base_linux_gtk_integration.h"
+#include "ui/platform/linux/ui_linux_wayland_integration.h"
+#include "base/const_string.h"
 #include "base/qt_adapters.h"
 #include "base/flat_set.h"

+#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
+#include "base/platform/linux/base_linux_xcb_utilities.h"
+#endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
+
 #include <QtCore/QPoint>
 #include <QtGui/QScreen>
+#include <QtGui/QWindow>
 #include <QtWidgets/QApplication>
 #include <qpa/qplatformnativeinterface.h>

+Q_DECLARE_METATYPE(QMargins);
+
 namespace Ui {
 namespace Platform {
+namespace {
+
+constexpr auto kXCBFrameExtentsAtomName = "_GTK_FRAME_EXTENTS"_cs;
+
+constexpr auto kXDGDesktopPortalService = "org.freedesktop.portal.Desktop"_cs;
+constexpr auto kXDGDesktopPortalObjectPath = "/org/freedesktop/portal/desktop"_cs;
+constexpr auto kSettingsPortalInterface = "org.freedesktop.portal.Settings"_cs;
+
+#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
+bool SetXCBFrameExtents(QWindow *window, const QMargins &extents) {
+	const auto connection = base::Platform::XCB::GetConnectionFromQt();
+	if (!connection) {
+		return false;
+	}
+
+	const auto frameExtentsAtom = base::Platform::XCB::GetAtom(
+		connection,
+		kXCBFrameExtentsAtomName.utf16());
+
+	if (!frameExtentsAtom.has_value()) {
+		return false;
+	}
+
+	const auto extentsVector = std::vector<uint>{
+		uint(extents.left()),
+		uint(extents.right()),
+		uint(extents.top()),
+		uint(extents.bottom()),
+	};
+
+	xcb_change_property(
+		connection,
+		XCB_PROP_MODE_REPLACE,
+		window->winId(),
+		*frameExtentsAtom,
+		XCB_ATOM_CARDINAL,
+		32,
+		extentsVector.size(),
+		extentsVector.data());
+
+	return true;
+}
+
+bool UnsetXCBFrameExtents(QWindow *window) {
+	const auto connection = base::Platform::XCB::GetConnectionFromQt();
+	if (!connection) {
+		return false;
+	}
+
+	const auto frameExtentsAtom = base::Platform::XCB::GetAtom(
+		connection,
+		kXCBFrameExtentsAtomName.utf16());
+
+	if (!frameExtentsAtom.has_value()) {
+		return false;
+	}
+
+	xcb_delete_property(
+		connection,
+		window->winId(),
+		*frameExtentsAtom);
+
+	return true;
+}
+
+bool ShowXCBWindowMenu(QWindow *window) {
+	const auto connection = base::Platform::XCB::GetConnectionFromQt();
+	if (!connection) {
+		return false;
+	}
+
+	const auto root = base::Platform::XCB::GetRootWindowFromQt();
+	if (!root.has_value()) {
+		return false;
+	}
+
+	const auto showWindowMenuAtom = base::Platform::XCB::GetAtom(
+		connection,
+		"_GTK_SHOW_WINDOW_MENU");
+
+	if (!showWindowMenuAtom.has_value()) {
+		return false;
+	}
+
+	const auto globalPos = QCursor::pos();
+
+	xcb_client_message_event_t xev;
+	xev.response_type = XCB_CLIENT_MESSAGE;
+	xev.type = *showWindowMenuAtom;
+	xev.sequence = 0;
+	xev.window = window->winId();
+	xev.format = 32;
+	xev.data.data32[0] = 0;
+	xev.data.data32[1] = globalPos.x();
+	xev.data.data32[2] = globalPos.y();
+	xev.data.data32[3] = 0;
+	xev.data.data32[4] = 0;
+
+	xcb_ungrab_pointer(connection, XCB_CURRENT_TIME);
+	xcb_send_event(
+		connection,
+		false,
+		*root,
+		XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
+			| XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY,
+		reinterpret_cast<const char*>(&xev));
+
+	return true;
+}
+#endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
+
+TitleControls::Control GtkKeywordToTitleControl(const QString &keyword) {
+	if (keyword == qstr("minimize")) {
+		return TitleControls::Control::Minimize;
+	} else if (keyword == qstr("maximize")) {
+		return TitleControls::Control::Maximize;
+	} else if (keyword == qstr("close")) {
+		return TitleControls::Control::Close;
+	}
+
+	return TitleControls::Control::Unknown;
+}
+
+} // namespace

 bool IsApplicationActive() {
 	return QApplication::activeWindow() != nullptr;
@ -50,5 +184,130 @@ bool TranslucentWindowsSupported(QPoint globalPosition) {
 void IgnoreAllActivation(not_null<QWidget*> widget) {
 }

+bool WindowExtentsSupported() {
+#ifdef DESKTOP_APP_QT_PATCHED
+	if (::Platform::IsWayland()) {
+		return true;
+	}
+#endif // DESKTOP_APP_QT_PATCHED
+
+#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
+	namespace XCB = base::Platform::XCB;
+	if (!::Platform::IsWayland()
+		&& XCB::IsSupportedByWM(kXCBFrameExtentsAtomName.utf16())) {
+		return true;
+	}
+#endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
+
+	return false;
+}
+
+bool SetWindowExtents(QWindow *window, const QMargins &extents) {
+	if (::Platform::IsWayland()) {
+#ifdef DESKTOP_APP_QT_PATCHED
+		window->setProperty("WaylandCustomMargins", QVariant::fromValue<QMargins>(extents));
+		return true;
+#else // DESKTOP_APP_QT_PATCHED
+		return false;
+#endif // !DESKTOP_APP_QT_PATCHED
+	} else {
+#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
+		return SetXCBFrameExtents(window, extents);
+#else // !DESKTOP_APP_DISABLE_X11_INTEGRATION
+		return false;
+#endif // DESKTOP_APP_DISABLE_X11_INTEGRATION
+	}
+}
+
+bool UnsetWindowExtents(QWindow *window) {
+	if (::Platform::IsWayland()) {
+#ifdef DESKTOP_APP_QT_PATCHED
+		window->setProperty("WaylandCustomMargins", QVariant());
+		return true;
+#else // DESKTOP_APP_QT_PATCHED
+		return false;
+#endif // !DESKTOP_APP_QT_PATCHED
+	} else {
+#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
+		return UnsetXCBFrameExtents(window);
+#else // !DESKTOP_APP_DISABLE_X11_INTEGRATION
+		return false;
+#endif // DESKTOP_APP_DISABLE_X11_INTEGRATION
+	}
+}
+
+bool ShowWindowMenu(QWindow *window) {
+	if (const auto integration = WaylandIntegration::Instance()) {
+		return integration->showWindowMenu(window);
+	} else {
+#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
+		return ShowXCBWindowMenu(window);
+#else // !DESKTOP_APP_DISABLE_X11_INTEGRATION
+		return false;
+#endif // DESKTOP_APP_DISABLE_X11_INTEGRATION
+	}
+}
+
+TitleControls::Layout TitleControlsLayout() {
+	const auto gtkResult = []() -> std::optional<TitleControls::Layout> {
+		const auto integration = base::Platform::GtkIntegration::Instance();
+		if (!integration || !integration->checkVersion(3, 12, 0)) {
+			return std::nullopt;
+		}
+
+		const auto decorationLayoutSetting = integration->getStringSetting(
+			"gtk-decoration-layout");
+		
+		if (!decorationLayoutSetting.has_value()) {
+			return std::nullopt;
+		}
+
+		const auto decorationLayout = decorationLayoutSetting->split(':');
+
+		std::vector<TitleControls::Control> controlsLeft;
+		ranges::transform(
+			decorationLayout[0].split(','),
+			ranges::back_inserter(controlsLeft),
+			GtkKeywordToTitleControl);
+
+		std::vector<TitleControls::Control> controlsRight;
+		if (decorationLayout.size() > 1) {
+			ranges::transform(
+				decorationLayout[1].split(','),
+				ranges::back_inserter(controlsRight),
+				GtkKeywordToTitleControl);
+		}
+
+		return TitleControls::Layout{
+			.left = controlsLeft,
+			.right = controlsRight
+		};
+	}();
+
+	if (gtkResult.has_value()) {
+		return *gtkResult;
+	}
+
+#ifdef __HAIKU__
+	return TitleControls::Layout{
+		.left = {
+			TitleControls::Control::Close,
+		},
+		.right = {
+			TitleControls::Control::Minimize,
+			TitleControls::Control::Maximize,
+		}
+	};
+#else // __HAIKU__
+	return TitleControls::Layout{
+		.right = {
+			TitleControls::Control::Minimize,
+			TitleControls::Control::Maximize,
+			TitleControls::Control::Close,
+		}
+	};
+#endif // !__HAIKU__
+}
+
 } // namespace Platform
 } // namespace Ui
--- a/ui/platform/linux/ui_utility_linux.h
+++ b/ui/platform/linux/ui_utility_linux.h
@ -6,6 +6,8 @@
 //
 #pragma once

+#include "ui/platform/ui_platform_utility.h"
+
 class QPainter;
 class QPaintEvent;

--- a/ui/platform/mac/ui_utility_mac.h
+++ b/ui/platform/mac/ui_utility_mac.h
@ -6,6 +6,7 @@
 //
 #pragma once

+#include "ui/platform/ui_platform_utility.h"
 #include "base/platform/base_platform_info.h"
 #include <QtCore/QPoint>

@ -23,5 +24,21 @@ inline constexpr bool UseMainQueueGeneric() {
 	return ::Platform::IsMacStoreBuild();
 }

+inline bool WindowExtentsSupported() {
+	return false;
+}
+
+inline bool SetWindowExtents(QWindow *window, const QMargins &extents) {
+	return false;
+}
+
+inline bool UnsetWindowExtents(QWindow *window) {
+	return false;
+}
+
+inline bool ShowWindowMenu(QWindow *window) {
+	return false;
+}
+
 } // namespace Platform
 } // namespace Ui
--- a/ui/platform/mac/ui_utility_mac.mm
+++ b/ui/platform/mac/ui_utility_mac.mm
@ -99,5 +99,15 @@ void DrainMainQueue() {
 void IgnoreAllActivation(not_null<QWidget*> widget) {
 }

+TitleControls::Layout TitleControlsLayout() {
+	return TitleControls::Layout{
+		.left = {
+			TitleControls::Control::Close,
+			TitleControls::Control::Minimize,
+			TitleControls::Control::Maximize,
+		}
+	};
+}
+
 } // namespace Platform
 } // namespace Ui
--- a/ui/platform/ui_platform_utility.cpp
+++ b/ui/platform/ui_platform_utility.cpp
@ -0,0 +1,26 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/platform/ui_platform_utility.h"
+
+namespace Ui {
+namespace Platform {
+namespace {
+
+rpl::event_stream<> TitleControlsLayoutChanges;
+
+} // namespace
+
+rpl::producer<> TitleControlsLayoutChanged() {
+	return TitleControlsLayoutChanges.events();
+}
+
+void NotifyTitleControlsLayoutChanged() {
+	TitleControlsLayoutChanges.fire({});
+}
+
+} // namespace Platform
+} // namespace Ui
--- a/ui/platform/ui_platform_utility.h
+++ b/ui/platform/ui_platform_utility.h
@ -6,6 +6,8 @@
 //
 #pragma once

+#include "ui/platform/ui_platform_window_title.h"
+
 class QPoint;
 class QPainter;
 class QPaintEvent;
@ -30,6 +32,15 @@ void IgnoreAllActivation(not_null<QWidget*> widget);
 [[nodiscard]] constexpr bool UseMainQueueGeneric();
 void DrainMainQueue(); // Needed only if UseMainQueueGeneric() is false.

+[[nodiscard]] bool WindowExtentsSupported();
+bool SetWindowExtents(QWindow *window, const QMargins &extents);
+bool UnsetWindowExtents(QWindow *window);
+bool ShowWindowMenu(QWindow *window);
+
+[[nodiscard]] TitleControls::Layout TitleControlsLayout();
+[[nodiscard]] rpl::producer<> TitleControlsLayoutChanged();
+void NotifyTitleControlsLayoutChanged();
+
 } // namespace Platform
 } // namespace Ui

--- a/ui/platform/ui_platform_window.cpp
+++ b/ui/platform/ui_platform_window.cpp
@ -6,21 +6,31 @@
 //
 #include "ui/platform/ui_platform_window.h"

+#include "ui/platform/ui_platform_window_title.h"
+#include "ui/platform/ui_platform_utility.h"
 #include "ui/widgets/window.h"
+#include "ui/widgets/shadow.h"
+#include "ui/painter.h"
+#include "styles/style_widgets.h"
+#include "styles/style_layers.h"

+#include <QtCore/QCoreApplication>
 #include <QtGui/QWindow>
 #include <QtGui/QtEvents>

 namespace Ui {
 namespace Platform {
+namespace {
+
+[[nodiscard]] const style::Shadow &Shadow() {
+	return st::callShadow;
+}
+
+} // namespace

 BasicWindowHelper::BasicWindowHelper(not_null<RpWidget*> window)
 : _window(window) {
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 9, 0))
 	_window->setWindowFlag(Qt::Window);
-#else // Qt >= 5.9
-	_window->setWindowFlags(_window->windowFlags() | Qt::Window);
-#endif // Qt >= 5.9
 }

 not_null<RpWidget*> BasicWindowHelper::body() {
@ -100,8 +110,6 @@ void BasicWindowHelper::setupBodyTitleAreaEvents() {
 			&& (static_cast<QMouseEvent*>(e.get())->button()
 				== Qt::LeftButton)) {
 			_mousePressed = true;
-
-#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0) || defined DESKTOP_APP_QT_PATCHED
 		} else if (e->type() == QEvent::MouseMove) {
 			const auto mouseEvent = static_cast<QMouseEvent*>(e.get());
 			if (_mousePressed
@ -109,7 +117,6 @@ void BasicWindowHelper::setupBodyTitleAreaEvents() {
 				&& !_window->isFullScreen()
 #endif // !Q_OS_WIN
 				&& (hitTest() & WindowTitleHitTestFlag::Move)) {
-
 #ifdef Q_OS_WIN
 				if (_window->isFullScreen()) {
 					// On Windows we just jump out of fullscreen
@ -121,10 +128,270 @@ void BasicWindowHelper::setupBodyTitleAreaEvents() {
 				_mousePressed = false;
 				_window->windowHandle()->startSystemMove();
 			}
-#endif // Qt >= 5.15 || DESKTOP_APP_QT_PATCHED
 		}
 	}, body()->lifetime());
 }

+DefaultWindowHelper::DefaultWindowHelper(not_null<RpWidget*> window)
+: BasicWindowHelper(window)
+, _title(Ui::CreateChild<DefaultTitleWidget>(window.get()))
+, _body(Ui::CreateChild<RpWidget>(window.get())) {
+	init();
+}
+
+void DefaultWindowHelper::init() {
+	window()->setWindowFlag(Qt::FramelessWindowHint);
+
+	if (WindowExtentsSupported()) {
+		window()->setAttribute(Qt::WA_TranslucentBackground);
+	}
+
+	window()->widthValue(
+	) | rpl::start_with_next([=](int width) {
+		const auto area = resizeArea();
+		_title->setGeometry(
+			area.left(),
+			area.top(),
+			width - area.left() - area.right(),
+			_title->st()->height);
+	}, _title->lifetime());
+
+	rpl::combine(
+		window()->sizeValue(),
+		_title->heightValue()
+	) | rpl::start_with_next([=](QSize size, int titleHeight) {
+		const auto area = resizeArea();
+
+		const auto sizeWithoutMargins = size
+			.shrunkBy({ 0, titleHeight, 0, 0 })
+			.shrunkBy(area);
+
+		const auto topLeft = QPoint(
+			area.left(),
+			area.top() + titleHeight);
+
+		_body->setGeometry(QRect(topLeft, sizeWithoutMargins));
+	}, _body->lifetime());
+
+	window()->paintRequest(
+	) | rpl::start_with_next([=] {
+		const auto area = resizeArea();
+
+		if (area.isNull()) {
+			return;
+		}
+
+		Painter p(window());
+
+		if (hasShadow()) {
+			Ui::Shadow::paint(
+				p,
+				QRect(QPoint(), window()->size()).marginsRemoved(area),
+				window()->width(),
+				Shadow());
+		} else {
+			paintBorders(p);
+		}
+	}, window()->lifetime());
+
+	window()->shownValue(
+	) | rpl::start_with_next([=](bool shown) {
+		if (shown) {
+			updateWindowExtents();
+		}
+	}, window()->lifetime());
+
+	window()->events() | rpl::start_with_next([=](not_null<QEvent*> e) {
+		if (e->type() == QEvent::MouseButtonPress) {
+			const auto mouseEvent = static_cast<QMouseEvent*>(e.get());
+			const auto currentPoint = mouseEvent->windowPos().toPoint();
+			const auto edges = edgesFromPos(currentPoint);
+
+			if (mouseEvent->button() == Qt::LeftButton && edges) {
+				window()->windowHandle()->startSystemResize(edges);
+			}
+		} else if (e->type() == QEvent::Move
+			|| e->type() == QEvent::Resize
+			|| e->type() == QEvent::WindowStateChange) {
+			updateWindowExtents();
+		}
+	}, window()->lifetime());
+
+	QCoreApplication::instance()->installEventFilter(this);
+}
+
+not_null<RpWidget*> DefaultWindowHelper::body() {
+	return _body;
+}
+
+bool DefaultWindowHelper::hasShadow() const {
+	const auto center = window()->geometry().center();
+	return WindowExtentsSupported() && TranslucentWindowsSupported(center);
+}
+
+QMargins DefaultWindowHelper::resizeArea() const {
+	if (window()->isMaximized() || window()->isFullScreen()) {
+		return QMargins();
+	}
+
+	return Shadow().extend;
+}
+
+Qt::Edges DefaultWindowHelper::edgesFromPos(const QPoint &pos) const {
+	const auto area = resizeArea();
+
+	if (area.isNull()) {
+		return Qt::Edges();
+	} else if (pos.x() <= area.left()) {
+		if (pos.y() <= area.top()) {
+			return Qt::LeftEdge | Qt::TopEdge;
+		} else if (pos.y() >= (window()->height() - area.bottom())) {
+			return Qt::LeftEdge | Qt::BottomEdge;
+		}
+
+		return Qt::LeftEdge;
+	} else if (pos.x() >= (window()->width() - area.right())) {
+		if (pos.y() <= area.top()) {
+			return Qt::RightEdge | Qt::TopEdge;
+		} else if (pos.y() >= (window()->height() - area.bottom())) {
+			return Qt::RightEdge | Qt::BottomEdge;
+		}
+
+		return Qt::RightEdge;
+	} else if (pos.y() <= area.top()) {
+		return Qt::TopEdge;
+	} else if (pos.y() >= (window()->height() - area.bottom())) {
+		return Qt::BottomEdge;
+	}
+
+	return Qt::Edges();
+}
+
+bool DefaultWindowHelper::eventFilter(QObject *obj, QEvent *e) {
+	// doesn't work with RpWidget::events() for some reason
+	if (e->type() == QEvent::MouseMove
+		&& obj->isWidgetType()
+		&& static_cast<QWidget*>(window()) == static_cast<QWidget*>(obj)) {
+		const auto mouseEvent = static_cast<QMouseEvent*>(e);
+		const auto currentPoint = mouseEvent->windowPos().toPoint();
+		const auto edges = edgesFromPos(currentPoint);
+
+		if (mouseEvent->buttons() == Qt::NoButton) {
+			updateCursor(edges);
+		}
+	}
+
+	return QObject::eventFilter(obj, e);
+}
+
+void DefaultWindowHelper::setTitle(const QString &title) {
+	_title->setText(title);
+	window()->setWindowTitle(title);
+}
+
+void DefaultWindowHelper::setTitleStyle(const style::WindowTitle &st) {
+	const auto area = resizeArea();
+	_title->setStyle(st);
+	_title->setGeometry(
+		area.left(),
+		area.top(),
+		window()->width() - area.left() - area.right(),
+		_title->st()->height);
+}
+
+void DefaultWindowHelper::setMinimumSize(QSize size) {
+	const auto sizeWithMargins = size
+		.grownBy({ 0, _title->height(), 0, 0 })
+		.grownBy(resizeArea());
+	window()->setMinimumSize(sizeWithMargins);
+}
+
+void DefaultWindowHelper::setFixedSize(QSize size) {
+	const auto sizeWithMargins = size
+		.grownBy({ 0, _title->height(), 0, 0 })
+		.grownBy(resizeArea());
+	window()->setFixedSize(sizeWithMargins);
+	_title->setResizeEnabled(false);
+}
+
+void DefaultWindowHelper::setGeometry(QRect rect) {
+	window()->setGeometry(rect
+		.marginsAdded({ 0, _title->height(), 0, 0 })
+		.marginsAdded(resizeArea()));
+}
+
+void DefaultWindowHelper::paintBorders(QPainter &p) {
+	const auto titleBackground = window()->isActiveWindow()
+		? _title->st()->bgActive
+		: _title->st()->bg;
+
+	const auto defaultTitleBackground = window()->isActiveWindow()
+		? st::defaultWindowTitle.bgActive
+		: st::defaultWindowTitle.bg;
+
+	const auto borderColor = QBrush(titleBackground).isOpaque()
+		? titleBackground
+		: defaultTitleBackground;
+
+	const auto area = resizeArea();
+
+	p.fillRect(
+		0,
+		area.top(),
+		area.left(),
+		window()->height() - area.top() - area.bottom(),
+		borderColor);
+
+	p.fillRect(
+		window()->width() - area.right(),
+		area.top(),
+		area.right(),
+		window()->height() - area.top() - area.bottom(),
+		borderColor);
+
+	p.fillRect(
+		0,
+		0,
+		window()->width(),
+		area.top(),
+		borderColor);
+
+	p.fillRect(
+		0,
+		window()->height() - area.bottom(),
+		window()->width(),
+		area.bottom(),
+		borderColor);
+}
+
+void DefaultWindowHelper::updateWindowExtents() {
+	if (hasShadow()) {
+		Platform::SetWindowExtents(
+			window()->windowHandle(),
+			resizeArea());
+
+		_extentsSet = true;
+	} else if (_extentsSet) {
+		Platform::UnsetWindowExtents(window()->windowHandle());
+		_extentsSet = false;
+	}
+}
+
+void DefaultWindowHelper::updateCursor(Qt::Edges edges) {
+	if (((edges & Qt::LeftEdge) && (edges & Qt::TopEdge))
+		|| ((edges & Qt::RightEdge) && (edges & Qt::BottomEdge))) {
+		window()->setCursor(QCursor(Qt::SizeFDiagCursor));
+	} else if (((edges & Qt::LeftEdge) && (edges & Qt::BottomEdge))
+		|| ((edges & Qt::RightEdge) && (edges & Qt::TopEdge))) {
+		window()->setCursor(QCursor(Qt::SizeBDiagCursor));
+	} else if ((edges & Qt::LeftEdge) || (edges & Qt::RightEdge)) {
+		window()->setCursor(QCursor(Qt::SizeHorCursor));
+	} else if ((edges & Qt::TopEdge) || (edges & Qt::BottomEdge)) {
+		window()->setCursor(QCursor(Qt::SizeVerCursor));
+	} else {
+		window()->unsetCursor();
+	}
+}
+
 } // namespace Platform
 } // namespace Ui
--- a/ui/platform/ui_platform_window.h
+++ b/ui/platform/ui_platform_window.h
@ -20,6 +20,8 @@ using WindowTitleHitTestFlags = base::flags<WindowTitleHitTestFlag>;

 namespace Platform {

+class DefaultTitleWidget;
+
 class BasicWindowHelper {
 public:
 	explicit BasicWindowHelper(not_null<RpWidget*> window);
@ -57,6 +59,35 @@ private:

 };

+class DefaultWindowHelper final : public QObject, public BasicWindowHelper {
+public:
+	explicit DefaultWindowHelper(not_null<RpWidget*> window);
+
+	not_null<RpWidget*> body() override;
+	void setTitle(const QString &title) override;
+	void setTitleStyle(const style::WindowTitle &st) override;
+	void setMinimumSize(QSize size) override;
+	void setFixedSize(QSize size) override;
+	void setGeometry(QRect rect) override;
+
+protected:
+	bool eventFilter(QObject *obj, QEvent *e) override;
+
+private:
+	void init();
+	[[nodiscard]] bool hasShadow() const;
+	[[nodiscard]] QMargins resizeArea() const;
+	[[nodiscard]] Qt::Edges edgesFromPos(const QPoint &pos) const;
+	void paintBorders(QPainter &p);
+	void updateWindowExtents();
+	void updateCursor(Qt::Edges edges);
+
+	const not_null<DefaultTitleWidget*> _title;
+	const not_null<RpWidget*> _body;
+	bool _extentsSet = false;
+
+};
+
 [[nodiscard]] std::unique_ptr<BasicWindowHelper> CreateSpecialWindowHelper(
 	not_null<RpWidget*> window);

@ -65,7 +96,7 @@ private:
 	if (auto special = CreateSpecialWindowHelper(window)) {
 		return special;
 	}
-	return std::make_unique<BasicWindowHelper>(window);
+	return std::make_unique<DefaultWindowHelper>(window);
 }

 } // namespace Platform
--- a/ui/platform/ui_platform_window_title.cpp
+++ b/ui/platform/ui_platform_window_title.cpp
@ -0,0 +1,353 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/platform/ui_platform_window_title.h"
+
+#include "ui/platform/ui_platform_utility.h"
+#include "ui/widgets/buttons.h"
+#include "ui/widgets/shadow.h"
+#include "ui/ui_utility.h"
+#include "styles/style_widgets.h"
+#include "styles/palette.h"
+#include "base/algorithm.h"
+#include "base/event_filter.h"
+
+#include <QtGui/QPainter>
+#include <QtGui/QtEvents>
+#include <QtGui/QWindow>
+
+namespace Ui {
+namespace Platform {
+namespace {
+
+template <typename T>
+void RemoveDuplicates(std::vector<T> &v) {
+	auto end = v.end();
+	for (auto it = v.begin(); it != end; ++it) {
+		end = std::remove(it + 1, end, *it);
+	}
+
+	v.erase(end, v.end());
+}
+
+} // namespace
+
+TitleControls::TitleControls(
+	not_null<RpWidget*> parent,
+	const style::WindowTitle &st,
+	Fn<void(bool maximized)> maximize)
+: _st(&st)
+, _minimize(parent, _st->minimize)
+, _maximizeRestore(parent, _st->maximize)
+, _close(parent, _st->close)
+, _maximizedState(parent->windowState()
+	& (Qt::WindowMaximized | Qt::WindowFullScreen))
+, _activeState(parent->isActiveWindow()) {
+	init(std::move(maximize));
+
+	_close->paintRequest(
+	) | rpl::start_with_next([=] {
+		const auto active = window()->isActiveWindow();
+		if (_activeState != active) {
+			_activeState = active;
+			updateButtonsState();
+		}
+	}, _close->lifetime());
+}
+
+void TitleControls::setStyle(const style::WindowTitle &st) {
+	_st = &st;
+	updateButtonsState();
+}
+
+not_null<const style::WindowTitle*> TitleControls::st() const {
+	return _st;
+}
+
+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);
+		_minimize->clearState();
+	});
+	_minimize->setPointerCursor(false);
+	_maximizeRestore->setClickedCallback([=] {
+		if (maximize) {
+			maximize(!_maximizedState);
+		} else {
+			window()->setWindowState(_maximizedState
+				? Qt::WindowNoState
+				: Qt::WindowMaximized);
+		}
+		_maximizeRestore->clearState();
+	});
+	_maximizeRestore->setPointerCursor(false);
+	_close->setClickedCallback([=] {
+		window()->close();
+		_close->clearState();
+	});
+	_close->setPointerCursor(false);
+
+	parent()->widthValue(
+	) | rpl::start_with_next([=](int width) {
+		updateControlsPosition();
+	}, _close->lifetime());
+
+	TitleControlsLayoutChanged(
+	) | rpl::start_with_next([=] {
+		updateControlsPosition();
+	}, _close->lifetime());
+
+	const auto winIdEventFilter = std::make_shared<QObject*>(nullptr);
+	*winIdEventFilter = base::install_event_filter(
+		window(),
+		[=](not_null<QEvent*> e) {
+			if (!*winIdEventFilter || e->type() != QEvent::WinIdChange) {
+				return base::EventFilterResult::Continue;
+			}
+
+			QObject::connect(
+				window()->windowHandle(),
+				&QWindow::windowStateChanged,
+				[=](Qt::WindowState state) {
+					handleWindowStateChanged(state);
+				});
+
+			base::take(*winIdEventFilter)->deleteLater();
+			return base::EventFilterResult::Continue;
+		});
+
+	_activeState = parent()->isActiveWindow();
+	updateButtonsState();
+}
+
+void TitleControls::setResizeEnabled(bool enabled) {
+	_resizeEnabled = enabled;
+	updateControlsPosition();
+}
+
+void TitleControls::raise() {
+	_minimize->raise();
+	_maximizeRestore->raise();
+	_close->raise();
+}
+
+Ui::IconButton *TitleControls::controlWidget(Control control) const {
+	switch (control) {
+	case Control::Minimize: return _minimize;
+	case Control::Maximize: return _maximizeRestore;
+	case Control::Close: return _close;
+	}
+
+	return nullptr;
+}
+
+void TitleControls::updateControlsPosition() {
+	const auto controlsLayout = TitleControlsLayout();
+	auto controlsLeft = controlsLayout.left;
+	auto controlsRight = controlsLayout.right;
+
+	const auto controlPresent = [&](Control control) {
+		return ranges::contains(controlsLeft, control)
+		|| ranges::contains(controlsRight, control);
+	};
+
+	const auto eraseControl = [&](Control control) {
+		controlsLeft.erase(
+			ranges::remove(controlsLeft, control),
+			end(controlsLeft));
+
+		controlsRight.erase(
+			ranges::remove(controlsRight, control),
+			end(controlsRight));
+	};
+
+	if (!_resizeEnabled) {
+		eraseControl(Control::Maximize);
+	}
+
+	if (controlPresent(Control::Minimize)) {
+		_minimize->show();
+	} else {
+		_minimize->hide();
+	}
+
+	if (controlPresent(Control::Maximize)) {
+		_maximizeRestore->show();
+	} else {
+		_maximizeRestore->hide();
+	}
+
+	if (controlPresent(Control::Close)) {
+		_close->show();
+	} else {
+		_close->hide();
+	}
+
+	updateControlsPositionBySide(controlsLeft, false);
+	updateControlsPositionBySide(controlsRight, true);
+}
+
+void TitleControls::updateControlsPositionBySide(
+		const std::vector<Control> &controls,
+		bool right) {
+	auto preparedControls = right
+		? (ranges::view::reverse(controls) | ranges::to_vector)
+		: controls;
+
+	RemoveDuplicates(preparedControls);
+
+	auto position = 0;
+	for (const auto &control : preparedControls) {
+		const auto widget = controlWidget(control);
+		if (!widget) {
+			continue;
+		}
+
+		if (right) {
+			widget->moveToRight(position, 0);
+		} else {
+			widget->moveToLeft(position, 0);
+		}
+
+		position += widget->width();
+	}
+}
+
+void TitleControls::handleWindowStateChanged(Qt::WindowState state) {
+	if (state == Qt::WindowMinimized) {
+		return;
+	}
+
+	auto maximized = (state == Qt::WindowMaximized)
+		|| (state == Qt::WindowFullScreen);
+	if (_maximizedState != maximized) {
+		_maximizedState = maximized;
+		updateButtonsState();
+	}
+}
+
+void TitleControls::updateButtonsState() {
+	const auto minimize = _activeState
+		? &_st->minimizeIconActive
+		: &_st->minimize.icon;
+	const auto minimizeOver = _activeState
+		? &_st->minimizeIconActiveOver
+		: &_st->minimize.iconOver;
+	_minimize->setIconOverride(minimize, minimizeOver);
+	if (_maximizedState) {
+		const auto restore = _activeState
+			? &_st->restoreIconActive
+			: &_st->restoreIcon;
+		const auto restoreOver = _activeState
+			? &_st->restoreIconActiveOver
+			: &_st->restoreIconOver;
+		_maximizeRestore->setIconOverride(restore, restoreOver);
+	} else {
+		const auto maximize = _activeState
+			? &_st->maximizeIconActive
+			: &_st->maximize.icon;
+		const auto maximizeOver = _activeState
+			? &_st->maximizeIconActiveOver
+			: &_st->maximize.iconOver;
+		_maximizeRestore->setIconOverride(maximize, maximizeOver);
+	}
+	const auto close = _activeState
+		? &_st->closeIconActive
+		: &_st->close.icon;
+	const auto closeOver = _activeState
+		? &_st->closeIconActiveOver
+		: &_st->close.iconOver;
+	_close->setIconOverride(close, closeOver);
+}
+
+DefaultTitleWidget::DefaultTitleWidget(not_null<RpWidget*> parent)
+: RpWidget(parent)
+, _controls(this, st::defaultWindowTitle)
+, _shadow(this, st::titleShadow) {
+	setAttribute(Qt::WA_OpaquePaintEvent);
+}
+
+not_null<const style::WindowTitle*> DefaultTitleWidget::st() const {
+	return _controls.st();
+}
+
+void DefaultTitleWidget::setText(const QString &text) {
+	window()->setWindowTitle(text);
+}
+
+void DefaultTitleWidget::setStyle(const style::WindowTitle &st) {
+	_controls.setStyle(st);
+	update();
+}
+
+void DefaultTitleWidget::setResizeEnabled(bool enabled) {
+	_controls.setResizeEnabled(enabled);
+}
+
+void DefaultTitleWidget::paintEvent(QPaintEvent *e) {
+	const auto active = window()->isActiveWindow();
+	QPainter(this).fillRect(
+		e->rect(),
+		active ? _controls.st()->bgActive : _controls.st()->bg);
+}
+
+void DefaultTitleWidget::resizeEvent(QResizeEvent *e) {
+	_shadow->setGeometry(0, height() - st::lineWidth, width(), st::lineWidth);
+}
+
+void DefaultTitleWidget::mousePressEvent(QMouseEvent *e) {
+	if (e->button() == Qt::LeftButton) {
+		_mousePressed = true;
+	} else if (e->button() == Qt::RightButton) {
+		ShowWindowMenu(window()->windowHandle());
+	}
+}
+
+void DefaultTitleWidget::mouseReleaseEvent(QMouseEvent *e) {
+	if (e->button() == Qt::LeftButton) {
+		_mousePressed = false;
+	}
+}
+
+void DefaultTitleWidget::mouseMoveEvent(QMouseEvent *e) {
+	if (_mousePressed) {
+		window()->windowHandle()->startSystemMove();
+	}
+}
+
+void DefaultTitleWidget::mouseDoubleClickEvent(QMouseEvent *e) {
+	const auto state = window()->windowState();
+	if (state & Qt::WindowMaximized) {
+		window()->setWindowState(state & ~Qt::WindowMaximized);
+	} else {
+		window()->setWindowState(state | Qt::WindowMaximized);
+	}
+}
+
+} // namespace Platform
+} // namespace Ui
--- a/ui/platform/ui_platform_window_title.h
+++ b/ui/platform/ui_platform_window_title.h
@ -0,0 +1,101 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/rp_widget.h"
+#include "base/object_ptr.h"
+
+#include <QtCore/QRect>
+#include <QtCore/QPoint>
+
+namespace style {
+struct WindowTitle;
+} // namespace style
+
+namespace Ui {
+
+class IconButton;
+class PlainShadow;
+
+namespace Platform {
+
+class TitleControls final {
+public:
+	TitleControls(
+		not_null<RpWidget*> parent,
+		const style::WindowTitle &st,
+		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();
+
+	enum class Control {
+		Unknown,
+		Minimize,
+		Maximize,
+		Close,
+	};
+
+	struct Layout {
+		std::vector<Control> left;
+		std::vector<Control> right;
+	};
+
+private:
+	[[nodiscard]] not_null<RpWidget*> parent() const;
+	[[nodiscard]] not_null<QWidget*> window() const;
+	[[nodiscard]] Ui::IconButton *controlWidget(Control control) const;
+
+	void init(Fn<void(bool maximized)> maximize);
+	void updateButtonsState();
+	void updateControlsPosition();
+	void updateControlsPositionBySide(
+		const std::vector<Control> &controls,
+		bool right);
+	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 DefaultTitleWidget : public RpWidget {
+public:
+	explicit DefaultTitleWidget(not_null<RpWidget*> parent);
+
+	[[nodiscard]] not_null<const style::WindowTitle*> st() const;
+	void setText(const QString &text);
+	void setStyle(const style::WindowTitle &st);
+	void setResizeEnabled(bool enabled);
+
+protected:
+	void paintEvent(QPaintEvent *e) override;
+	void resizeEvent(QResizeEvent *e) override;
+	void mousePressEvent(QMouseEvent *e) override;
+	void mouseReleaseEvent(QMouseEvent *e) override;
+	void mouseMoveEvent(QMouseEvent *e) override;
+	void mouseDoubleClickEvent(QMouseEvent *e) override;
+
+private:
+	TitleControls _controls;
+	object_ptr<Ui::PlainShadow> _shadow;
+	bool _mousePressed = false;
+
+};
+
+} // namespace Platform
+} // namespace Ui
--- a/ui/platform/win/ui_utility_win.cpp
+++ b/ui/platform/win/ui_utility_win.cpp
@ -6,10 +6,11 @@
 //
 #include "ui/platform/win/ui_utility_win.h"

-#include <QtWidgets/QApplication>
-
 #include "base/platform/win/base_windows_h.h"

+#include <QtWidgets/QApplication>
+#include <QtGui/QWindow>
+
 namespace Ui {
 namespace Platform {

@ -44,5 +45,27 @@ void IgnoreAllActivation(not_null<QWidget*> widget) {
 	ShowWindow(handle, SW_SHOW);
 }

+bool ShowWindowMenu(QWindow *window) {
+	const auto pos = QCursor::pos();
+
+	SendMessage(
+		HWND(window->winId()),
+		WM_SYSCOMMAND,
+		SC_MOUSEMENU,
+		MAKELPARAM(pos.x(), pos.y()));
+
+	return true;
+}
+
+TitleControls::Layout TitleControlsLayout() {
+	return TitleControls::Layout{
+		.right = {
+			TitleControls::Control::Minimize,
+			TitleControls::Control::Maximize,
+			TitleControls::Control::Close,
+		}
+	};
+}
+
 } // namespace Platform
 } // namespace Ui
--- a/ui/platform/win/ui_utility_win.h
+++ b/ui/platform/win/ui_utility_win.h
@ -6,6 +6,8 @@
 //
 #pragma once

+#include "ui/platform/ui_platform_utility.h"
+
 #include <QtCore/QPoint>

 class QPainter;
@ -40,5 +42,17 @@ inline constexpr bool UseMainQueueGeneric() {
 	return true;
 }

+inline bool WindowExtentsSupported() {
+	return false;
+}
+
+inline bool SetWindowExtents(QWindow *window, const QMargins &extents) {
+	return false;
+}
+
+inline bool UnsetWindowExtents(QWindow *window) {
+	return false;
+}
+
 } // namespace Platform
 } // namespace Ui
--- a/ui/platform/win/ui_window_title_win.cpp
+++ b/ui/platform/win/ui_window_title_win.cpp
@ -19,170 +19,6 @@
 namespace Ui {
 namespace Platform {

-TitleControls::TitleControls(
-	not_null<RpWidget*> parent,
-	const style::WindowTitle &st,
-	Fn<void(bool maximized)> maximize)
-: _st(&st)
-, _minimize(parent, _st->minimize)
-, _maximizeRestore(parent, _st->maximize)
-, _close(parent, _st->close)
-, _maximizedState(parent->windowState()
-	& (Qt::WindowMaximized | Qt::WindowFullScreen))
-, _activeState(parent->isActiveWindow()) {
-	init(std::move(maximize));
-
-	_close->paintRequest(
-	) | rpl::start_with_next([=] {
-		const auto active = window()->isActiveWindow();
-		if (_activeState != active) {
-			_activeState = active;
-			updateButtonsState();
-		}
-	}, _close->lifetime());
-}
-
-void TitleControls::setStyle(const style::WindowTitle &st) {
-	_st = &st;
-	updateButtonsState();
-}
-
-not_null<const style::WindowTitle*> TitleControls::st() const {
-	return _st;
-}
-
-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);
-		_minimize->clearState();
-	});
-	_minimize->setPointerCursor(false);
-	_maximizeRestore->setClickedCallback([=] {
-		if (maximize) {
-			maximize(!_maximizedState);
-		} else {
-			window()->setWindowState(_maximizedState
-				? Qt::WindowNoState
-				: Qt::WindowMaximized);
-		}
-		_maximizeRestore->clearState();
-	});
-	_maximizeRestore->setPointerCursor(false);
-	_close->setClickedCallback([=] {
-		window()->close();
-		_close->clearState();
-	});
-	_close->setPointerCursor(false);
-
-	parent()->widthValue(
-	) | rpl::start_with_next([=](int width) {
-		updateControlsPosition();
-	}, _close->lifetime());
-
-	window()->createWinId();
-	QObject::connect(
-		window()->windowHandle(),
-		&QWindow::windowStateChanged,
-		[=](Qt::WindowState state) { handleWindowStateChanged(state); });
-	_activeState = parent()->isActiveWindow();
-	updateButtonsState();
-}
-
-void TitleControls::setResizeEnabled(bool enabled) {
-	_resizeEnabled = enabled;
-	updateControlsVisibility();
-}
-
-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);
-	if (_resizeEnabled) {
-		right += _maximizeRestore->width();
-	}
-	_minimize->moveToRight(right, 0);
-}
-
-void TitleControls::updateControlsVisibility() {
-	_maximizeRestore->setVisible(_resizeEnabled);
-	updateControlsPosition();
-}
-
-void TitleControls::handleWindowStateChanged(Qt::WindowState state) {
-	if (state == Qt::WindowMinimized) {
-		return;
-	}
-
-	auto maximized = (state == Qt::WindowMaximized)
-		|| (state == Qt::WindowFullScreen);
-	if (_maximizedState != maximized) {
-		_maximizedState = maximized;
-		updateButtonsState();
-	}
-}
-
-void TitleControls::updateButtonsState() {
-	const auto minimize = _activeState
-		? &_st->minimizeIconActive
-		: &_st->minimize.icon;
-	const auto minimizeOver = _activeState
-		? &_st->minimizeIconActiveOver
-		: &_st->minimize.iconOver;
-	_minimize->setIconOverride(minimize, minimizeOver);
-	if (_maximizedState) {
-		const auto restore = _activeState
-			? &_st->restoreIconActive
-			: &_st->restoreIcon;
-		const auto restoreOver = _activeState
-			? &_st->restoreIconActiveOver
-			: &_st->restoreIconOver;
-		_maximizeRestore->setIconOverride(restore, restoreOver);
-	} else {
-		const auto maximize = _activeState
-			? &_st->maximizeIconActive
-			: &_st->maximize.icon;
-		const auto maximizeOver = _activeState
-			? &_st->maximizeIconActiveOver
-			: &_st->maximize.iconOver;
-		_maximizeRestore->setIconOverride(maximize, maximizeOver);
-	}
-	const auto close = _activeState
-		? &_st->closeIconActive
-		: &_st->close.icon;
-	const auto closeOver = _activeState
-		? &_st->closeIconActiveOver
-		: &_st->close.iconOver;
-	_close->setIconOverride(close, closeOver);
-}
-
 TitleWidget::TitleWidget(not_null<RpWidget*> parent)
 : RpWidget(parent)
 , _controls(this, st::defaultWindowTitle)
--- a/ui/platform/win/ui_window_title_win.h
+++ b/ui/platform/win/ui_window_title_win.h
@ -6,6 +6,7 @@
 //
 #pragma once

+#include "ui/platform/ui_platform_window_title.h"
 #include "ui/rp_widget.h"
 #include "base/object_ptr.h"

@ -38,41 +39,6 @@ enum class HitTestResult {
 	TopLeft,
 };

-class TitleControls final {
-public:
-	TitleControls(
-		not_null<RpWidget*> parent,
-		const style::WindowTitle &st,
-		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);
--- a/ui/rp_widget.cpp
+++ b/ui/rp_widget.cpp
@ -160,8 +160,10 @@ bool RpWidgetMethods::handleEvent(QEvent *event) {
 	return eventHook(event);
 }

-RpWidgetMethods::Initer::Initer(QWidget *parent) {
-	parent->setGeometry(0, 0, 0, 0);
+RpWidgetMethods::Initer::Initer(QWidget *parent, bool setZeroGeometry) {
+	if (setZeroGeometry) {
+		parent->setGeometry(0, 0, 0, 0);
+	}
 }

 void RpWidgetMethods::visibilityChangedHook(bool wasVisible, bool nowVisible) {
--- a/ui/rp_widget.h
+++ b/ui/rp_widget.h
@ -243,7 +243,7 @@ using RpWidgetParent = std::conditional_t<
 	TWidget,
 	TWidgetHelper<Widget>>;

-template <typename Widget>
+template <typename Widget, typename Traits>
 class RpWidgetWrap;

 class RpWidgetMethods {
@ -281,7 +281,7 @@ protected:
 	virtual bool eventHook(QEvent *event) = 0;

 private:
-	template <typename Widget>
+	template <typename Widget, typename Traits>
 	friend class RpWidgetWrap;

 	struct EventStreams {
@ -292,7 +292,7 @@ private:
 		rpl::event_stream<> alive;
 	};
 	struct Initer {
-		Initer(QWidget *parent);
+		Initer(QWidget *parent, bool setZeroGeometry);
 	};

 	virtual void callSetVisible(bool visible) = 0;
@ -310,11 +310,15 @@ private:

 };

-template <typename Widget>
+struct RpWidgetDefaultTraits {
+	static constexpr bool kSetZeroGeometry = true;
+};
+
+template <typename Widget, typename Traits = RpWidgetDefaultTraits>
 class RpWidgetWrap
 	: public RpWidgetParent<Widget>
 	, public RpWidgetMethods {
-	using Self = RpWidgetWrap<Widget>;
+	using Self = RpWidgetWrap<Widget, Traits>;
 	using Parent = RpWidgetParent<Widget>;

 public:
@ -362,7 +366,7 @@ private:
 		return this->isHidden();
 	}

-	Initer _initer = { this };
+	Initer _initer = { this, Traits::kSetZeroGeometry };

 };

--- a/ui/widgets/buttons.cpp
+++ b/ui/widgets/buttons.cpp
@ -79,6 +79,10 @@ RippleButton::RippleButton(QWidget *parent, const style::RippleAnimation &st)

 void RippleButton::clearState() {
 	AbstractButton::clearState();
+	finishAnimating();
+}
+
+void RippleButton::finishAnimating() {
 	if (_ripple) {
 		_ripple.reset();
 		update();
@ -116,6 +120,13 @@ void RippleButton::setForceRippled(
 	update();
 }

+void RippleButton::paintRipple(
+		QPainter &p,
+		const QPoint &point,
+		const QColor *colorOverride) {
+	paintRipple(p, point.x(), point.y(), colorOverride);
+}
+
 void RippleButton::paintRipple(QPainter &p, int x, int y, const QColor *colorOverride) {
 	if (_ripple) {
 		_ripple->paint(p, x, y, width(), colorOverride);
@ -195,6 +206,11 @@ void FlatButton::setWidth(int w) {
 	resize(_width, height());
 }

+void FlatButton::setColorOverride(std::optional<QColor> color) {
+	_colorOverride = color;
+	update();
+}
+
 int32 FlatButton::textWidth() const {
 	return _st.font->width(_text);
 }
@ -214,7 +230,11 @@ void FlatButton::paintEvent(QPaintEvent *e) {

 	p.setFont(isOver() ? _st.overFont : _st.font);
 	p.setRenderHint(QPainter::TextAntialiasing);
-	p.setPen(isOver() ? _st.overColor : _st.color);
+	if (_colorOverride) {
+		p.setPen(*_colorOverride);
+	} else {
+		p.setPen(isOver() ? _st.overColor : _st.color);
+	}

 	const auto textRect = inner.marginsRemoved(
 		_textMargins
@ -361,7 +381,7 @@ void RoundButton::paintEvent(QPaintEvent *e) {
 		drawRect(_roundRectOver);
 	}

-	paintRipple(p, rounded.x(), rounded.y());
+	paintRipple(p, rounded.topLeft());

 	p.setFont(_st.font);
 	const auto textTop = _st.padding.top() + _st.textTop;
@ -392,7 +412,10 @@ void RoundButton::paintEvent(QPaintEvent *e) {
 		_numbers->paint(p, textLeft, textTop, width());
 	}
 	if (!_st.icon.empty()) {
-		_st.icon.paint(p, QPoint(iconLeft, iconTop), width());
+		const auto &current = ((over || down) && !_st.iconOver.empty())
+			? _st.iconOver
+			: _st.icon;
+		current.paint(p, QPoint(iconLeft, iconTop), width());
 	}
 }

@ -431,7 +454,7 @@ void IconButton::setRippleColorOverride(const style::color *colorOverride) {
 void IconButton::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	paintRipple(p, _st.rippleAreaPosition.x(), _st.rippleAreaPosition.y(), _rippleColorOverride ? &(*_rippleColorOverride)->c : nullptr);
+	paintRipple(p, _st.rippleAreaPosition, _rippleColorOverride ? &(*_rippleColorOverride)->c : nullptr);

 	auto down = isDown();
 	auto overIconOpacity = (down || forceRippled()) ? 1. : _a_over.value(isOver() ? 1. : 0.);
@ -547,7 +570,7 @@ void CrossButton::paintEvent(QPaintEvent *e) {
 	auto shown = _showAnimation.value(_shown ? 1. : 0.);
 	p.setOpacity(shown);

-	paintRipple(p, _st.crossPosition.x(), _st.crossPosition.y());
+	paintRipple(p, _st.crossPosition);

 	auto loading = 0.;
 	if (_loadingAnimation.animating()) {
--- a/ui/widgets/buttons.h
+++ b/ui/widgets/buttons.h
@ -58,7 +58,17 @@ public:

 	void clearState() override;

-	void paintRipple(QPainter &p, int x, int y, const QColor *colorOverride = nullptr);
+	void paintRipple(
+		QPainter &p,
+		const QPoint &point,
+		const QColor *colorOverride = nullptr);
+	void paintRipple(
+		QPainter &p,
+		int x,
+		int y,
+		const QColor *colorOverride = nullptr);
+
+	void finishAnimating();

 	~RippleButton();

@ -84,6 +94,7 @@ public:

 	void setText(const QString &text);
 	void setWidth(int w);
+	void setColorOverride(std::optional<QColor> color);
 	void setTextMargins(QMargins margins);

 	int32 textWidth() const;
@ -97,6 +108,7 @@ private:
 	QString _text;
 	QMargins _textMargins;
 	int _width = 0;
+	std::optional<QColor> _colorOverride;

 	const style::FlatButton &_st;

--- a/ui/widgets/call_button.cpp
+++ b/ui/widgets/call_button.cpp
@ -153,7 +153,7 @@ void CallButton::paintEvent(QPaintEvent *e) {
 	} else {
 		rippleColorInterpolated = anim::color(_stFrom->button.ripple.color, _stTo->button.ripple.color, _progress);
 	}
-	paintRipple(p, _stFrom->button.rippleAreaPosition.x(), _stFrom->button.rippleAreaPosition.y(), rippleColorOverride);
+	paintRipple(p, _stFrom->button.rippleAreaPosition, rippleColorOverride);

 	auto positionFrom = iconPosition(_stFrom);
 	if (paintFrom) {
--- a/ui/widgets/call_mute_button.cpp
+++ b/ui/widgets/call_mute_button.cpp
@ -328,6 +328,15 @@ BlobsWidget::BlobsWidget(
 void BlobsWidget::init() {
 	setAttribute(Qt::WA_TransparentForMouseEvents);

+	const auto cutRect = [](Painter &p, const QRectF &r) {
+		p.save();
+		p.setOpacity(1.);
+		p.setBrush(st::groupCallBg);
+		p.setCompositionMode(QPainter::CompositionMode_Source);
+		p.drawEllipse(r);
+		p.restore();
+	};
+
 	{
 		const auto s = _blobs.maxRadius() * 2 * kGlowPaddingFactor;
 		resize(s, s);
@ -351,6 +360,8 @@ void BlobsWidget::init() {
 		Painter p(this);
 		PainterHighQualityEnabler hq(p);

+		p.setPen(Qt::NoPen);
+
 		// Glow.
 		const auto s = kGlowMinScale
 			+ (1. - kGlowMinScale) * _blobs.currentLevel();
@ -369,37 +380,41 @@ void BlobsWidget::init() {
 					_switchConnectingProgress / kBlobPartAnimation)))
 			: _blobsScaleEnter;
 		_blobs.paint(p, _blobBrush, scale);
+		p.translate(-_center, -_center);
+
+		if (scale < 1.) {
+			cutRect(p, _circleRect);
+		}

 		// Main circle.
-		p.translate(-_center, -_center);
-		p.setPen(Qt::NoPen);
-		p.setBrush(_blobBrush);
-		p.drawEllipse(_circleRect);
+		const auto circleProgress =
+			Clamp(_switchConnectingProgress - kBlobPartAnimation)
+				/ kFillCirclePartAnimation;
+		const auto skipColoredCircle = (circleProgress == 1.);
+
+		if (!skipColoredCircle) {
+			p.setBrush(_blobBrush);
+			p.drawEllipse(_circleRect);
+		}

 		if (_switchConnectingProgress > 0.) {
 			p.resetTransform();

-			const auto circleProgress =
-				Clamp(_switchConnectingProgress - kBlobPartAnimation)
-					/ kFillCirclePartAnimation;
-
 			const auto mF = (_circleRect.width() / 2) * (1. - circleProgress);
 			const auto cutOutRect = _circleRect.marginsRemoved(
 				QMarginsF(mF, mF, mF, mF));

-			p.setPen(Qt::NoPen);
-			p.setBrush(st::callConnectingRadial.color);
-			p.setOpacity(circleProgress);
-			p.drawEllipse(_circleRect);
+			if (!skipColoredCircle) {
+				p.setBrush(st::callConnectingRadial.color);
+				p.setOpacity(circleProgress);
+				p.drawEllipse(_circleRect);
+			}

 			p.setOpacity(1.);
+
+			cutRect(p, cutOutRect);
+
 			p.setBrush(st::callIconBg);
-
-			p.save();
-			p.setCompositionMode(QPainter::CompositionMode_Source);
-			p.drawEllipse(cutOutRect);
-			p.restore();
-
 			p.drawEllipse(cutOutRect);
 		}
 	}, lifetime());
@ -553,25 +568,33 @@ void CallMuteButton::init() {
 	}, _centerLabel->lifetime());
 	_centerLabel->setAttribute(Qt::WA_TransparentForMouseEvents);

-	_radialInfo.rawShowProgress.value(
-	) | rpl::start_with_next([=](float64 value) {
+	rpl::combine(
+		_radialInfo.rawShowProgress.value(),
+		anim::Disables()
+	) | rpl::start_with_next([=](float64 value, bool disabled) {
 		auto &info = _radialInfo;
 		info.realShowProgress = (1. - value) / kRadialEndPartAnimation;

-		if (((value == 0.) || anim::Disabled()) && _radial) {
+		const auto guard = gsl::finally([&] {
+			_content->update();
+		});
+
+		if (((value == 0.) || disabled) && _radial) {
 			_radial->stop();
 			_radial = nullptr;
 			return;
 		}
-		if ((value > 0.) && !anim::Disabled() && !_radial) {
+		if ((value > 0.) && !disabled && !_radial) {
 			_radial = std::make_unique<InfiniteRadialAnimation>(
 				[=] { _content->update(); },
 				_radialInfo.st);
 			_radial->start();
 		}
 		if ((info.realShowProgress < 1.) && !info.isDirectionToShow) {
-			_radial->stop(anim::type::instant);
-			_radial->start();
+			if (_radial) {
+				_radial->stop(anim::type::instant);
+				_radial->start();
+			}
 			info.state = std::nullopt;
 			return;
 		}
@ -721,6 +744,8 @@ void CallMuteButton::init() {
 				const auto to = r.arcFrom - kRadialFinishArcShift;
 				ComputeRadialFinish(r.arcFrom, radialProgress, to);
 				ComputeRadialFinish(r.arcLength, radialProgress);
+			} else {
+				r.arcLength = RadialState::kFull;
 			}

 			const auto opacity = (radialProgress > kOverlapProgressRadialHide)
--- a/ui/widgets/checkbox.cpp
+++ b/ui/widgets/checkbox.cpp
@ -320,7 +320,8 @@ void RadioView::paint(Painter &p, int left, int top, int outerWidth) {
 	p.setBrush(_st->bg);
 	//int32 skip = qCeil(_st->thickness / 2.);
 	//p.drawEllipse(_checkRect.marginsRemoved(QMargins(skip, skip, skip, skip)));
-	p.drawEllipse(style::rtlrect(QRectF(left, top, _st->diameter, _st->diameter).marginsRemoved(QMarginsF(_st->thickness / 2., _st->thickness / 2., _st->thickness / 2., _st->thickness / 2.)), outerWidth));
+	const auto skip = (_st->outerSkip / 10.) + (_st->thickness / 2);
+	p.drawEllipse(style::rtlrect(QRectF(left, top, _st->diameter, _st->diameter).marginsRemoved(QMarginsF(skip, skip, skip, skip)), outerWidth));

 	if (toggled > 0) {
 		p.setPen(Qt::NoPen);
@ -332,7 +333,7 @@ void RadioView::paint(Painter &p, int left, int top, int outerWidth) {
 				? anim::brush(*_untoggledOverride, _st->toggledFg, toggled)
 				: anim::brush(_st->untoggledFg, _st->toggledFg, toggled)));

-		auto skip0 = _st->diameter / 2., skip1 = _st->skip / 10., checkSkip = skip0 * (1. - toggled) + skip1 * toggled;
+		const auto skip0 = _st->diameter / 2., skip1 = _st->skip / 10., checkSkip = skip0 * (1. - toggled) + skip1 * toggled;
 		p.drawEllipse(style::rtlrect(QRectF(left, top, _st->diameter, _st->diameter).marginsRemoved(QMarginsF(checkSkip, checkSkip, checkSkip, checkSkip)), outerWidth));
 		//int32 fskip = qFloor(checkSkip), cskip = qCeil(checkSkip);
 		//if (2 * fskip < _checkRect.width()) {
@ -569,11 +570,7 @@ void Checkbox::paintEvent(QPaintEvent *e) {
 		p.setOpacity(_st.disabledOpacity);
 	} else {
 		auto color = anim::color(_st.rippleBg, _st.rippleBgActive, active);
-		paintRipple(
-			p,
-			check.x() + _st.rippleAreaPosition.x(),
-			check.y() + _st.rippleAreaPosition.y(),
-			&color);
+		paintRipple(p, check.topLeft() + _st.rippleAreaPosition, &color);
 	}

 	auto realCheckRect = myrtlrect(check);
--- a/ui/widgets/dropdown_menu.cpp
+++ b/ui/widgets/dropdown_menu.cpp
@ -12,7 +12,7 @@ namespace Ui {

 DropdownMenu::DropdownMenu(QWidget *parent, const style::DropdownMenu &st) : InnerDropdown(parent, st.wrap)
 , _st(st) {
-	_menu = setOwnedWidget(object_ptr<Menu>(this, _st.menu));
+	_menu = setOwnedWidget(object_ptr<Menu::Menu>(this, _st.menu));
 	init();
 }

@ -33,12 +33,15 @@ DropdownMenu::DropdownMenu(QWidget *parent, const style::DropdownMenu &st) : Inn
 void DropdownMenu::init() {
 	InnerDropdown::setHiddenCallback([this] { hideFinish(); });

-	_menu->setResizedCallback([this] { resizeToContent(); });
-	_menu->setActivatedCallback([this](QAction *action, int actionTop, TriggeredSource source) {
-		handleActivated(action, actionTop, source);
+	_menu->resizesFromInner(
+	) | rpl::start_with_next([=] {
+		resizeToContent();
+	}, _menu->lifetime());
+	_menu->setActivatedCallback([this](const Menu::CallbackData &data) {
+		handleActivated(data);
 	});
-	_menu->setTriggeredCallback([this](QAction *action, int actionTop, TriggeredSource source) {
-		handleTriggered(action, actionTop, source);
+	_menu->setTriggeredCallback([this](const Menu::CallbackData &data) {
+		handleTriggered(data);
 	});
 	_menu->setKeyPressDelegate([this](int key) { return handleKeyPress(key); });
 	_menu->setMouseMoveDelegate([this](QPoint globalPosition) { handleMouseMove(globalPosition); });
@ -50,8 +53,9 @@ void DropdownMenu::init() {
 	hide();
 }

-not_null<QAction*> DropdownMenu::addAction(const QString &text, const QObject *receiver, const char* member, const style::icon *icon, const style::icon *iconOver) {
-	return _menu->addAction(text, receiver, member, icon, iconOver);
+not_null<QAction*> DropdownMenu::addAction(
+		base::unique_qptr<Menu::ItemBase> widget) {
+	return _menu->addAction(std::move(widget));
 }

 not_null<QAction*> DropdownMenu::addAction(const QString &text, Fn<void()> callback, const style::icon *icon, const style::icon *iconOver) {
@ -73,9 +77,13 @@ const std::vector<not_null<QAction*>> &DropdownMenu::actions() const {
 	return _menu->actions();
 }

-void DropdownMenu::handleActivated(QAction *action, int actionTop, TriggeredSource source) {
-	if (source == TriggeredSource::Mouse) {
-		if (!popupSubmenuFromAction(action, actionTop, source)) {
+bool DropdownMenu::empty() const {
+	return _menu->empty();
+}
+
+void DropdownMenu::handleActivated(const Menu::CallbackData &data) {
+	if (data.source == TriggeredSource::Mouse) {
+		if (!popupSubmenuFromAction(data)) {
 			if (auto currentSubmenu = base::take(_activeSubmenu)) {
 				currentSubmenu->hideMenu(true);
 			}
@ -83,11 +91,11 @@ void DropdownMenu::handleActivated(QAction *action, int actionTop, TriggeredSour
 	}
 }

-void DropdownMenu::handleTriggered(QAction *action, int actionTop, TriggeredSource source) {
-	if (!popupSubmenuFromAction(action, actionTop, source)) {
+void DropdownMenu::handleTriggered(const Menu::CallbackData &data) {
+	if (!popupSubmenuFromAction(data)) {
 		hideMenu();
 		_triggering = true;
-		emit action->trigger();
+		emit data.action->trigger();
 		_triggering = false;
 		if (_deleteLater) {
 			_deleteLater = false;
@ -97,7 +105,7 @@ void DropdownMenu::handleTriggered(QAction *action, int actionTop, TriggeredSour
 }

 // Not ready with submenus yet.
-bool DropdownMenu::popupSubmenuFromAction(QAction *action, int actionTop, TriggeredSource source) {
+bool DropdownMenu::popupSubmenuFromAction(const Menu::CallbackData &data) {
 	//if (auto submenu = _submenus.value(action)) {
 	//	if (_activeSubmenu == submenu) {
 	//		submenu->hideMenu(true);
@ -126,9 +134,9 @@ bool DropdownMenu::popupSubmenuFromAction(QAction *action, int actionTop, Trigge
 //	}
 //}

-void DropdownMenu::forwardKeyPress(int key) {
-	if (!handleKeyPress(key)) {
-		_menu->handleKeyPress(key);
+void DropdownMenu::forwardKeyPress(not_null<QKeyEvent*> e) {
+	if (!handleKeyPress(e->key())) {
+		_menu->handleKeyPress(e);
 	}
 }

@ -185,7 +193,7 @@ void DropdownMenu::hideEvent(QHideEvent *e) {
 }

 void DropdownMenu::keyPressEvent(QKeyEvent *e) {
-	forwardKeyPress(e->key());
+	forwardKeyPress(e);
 }

 void DropdownMenu::mouseMoveEvent(QMouseEvent *e) {
--- a/ui/widgets/dropdown_menu.h
+++ b/ui/widgets/dropdown_menu.h
@ -8,7 +8,7 @@

 #include "styles/style_widgets.h"
 #include "ui/widgets/inner_dropdown.h"
-#include "ui/widgets/menu.h"
+#include "ui/widgets/menu/menu.h"

 namespace Ui {

@ -18,7 +18,7 @@ class DropdownMenu : public InnerDropdown {
 public:
 	DropdownMenu(QWidget *parent, const style::DropdownMenu &st = st::defaultDropdownMenu);

-	not_null<QAction*> addAction(const QString &text, const QObject *receiver, const char* member, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
+	not_null<QAction*> addAction(base::unique_qptr<Menu::ItemBase> widget);
 	not_null<QAction*> addAction(const QString &text, Fn<void()> callback, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
 	not_null<QAction*> addSeparator();
 	void clearActions();
@ -28,6 +28,7 @@ public:
 	}

 	const std::vector<not_null<QAction*>> &actions() const;
+	bool empty() const;

 	~DropdownMenu();

@ -56,9 +57,9 @@ private:
 	void hideFinish();

 	using TriggeredSource = Menu::TriggeredSource;
-	void handleActivated(QAction *action, int actionTop, TriggeredSource source);
-	void handleTriggered(QAction *action, int actionTop, TriggeredSource source);
-	void forwardKeyPress(int key);
+	void handleActivated(const Menu::CallbackData &data);
+	void handleTriggered(const Menu::CallbackData &data);
+	void forwardKeyPress(not_null<QKeyEvent*> e);
 	bool handleKeyPress(int key);
 	void forwardMouseMove(QPoint globalPosition) {
 		_menu->handleMouseMove(globalPosition);
@ -74,14 +75,14 @@ private:
 	void handleMouseRelease(QPoint globalPosition);

 	using SubmenuPointer = QPointer<DropdownMenu>;
-	bool popupSubmenuFromAction(QAction *action, int actionTop, TriggeredSource source);
+	bool popupSubmenuFromAction(const Menu::CallbackData &data);
 	void popupSubmenu(SubmenuPointer submenu, int actionTop, TriggeredSource source);
 	void showMenu(const QPoint &p, DropdownMenu *parent, TriggeredSource source);

 	const style::DropdownMenu &_st;
 	Fn<void()> _hiddenCallback;

-	QPointer<Menu> _menu;
+	QPointer<Menu::Menu> _menu;

 	// Not ready with submenus yet.
 	//using Submenus = QMap<QAction*, SubmenuPointer>;
--- a/ui/widgets/input_fields.cpp
+++ b/ui/widgets/input_fields.cpp
@ -2659,12 +2659,18 @@ bool InputField::ShouldSubmit(
 }

 void InputField::keyPressEventInner(QKeyEvent *e) {
-	bool shift = e->modifiers().testFlag(Qt::ShiftModifier), alt = e->modifiers().testFlag(Qt::AltModifier);
-	bool macmeta = Platform::IsMac() && e->modifiers().testFlag(Qt::ControlModifier) && !e->modifiers().testFlag(Qt::MetaModifier) && !e->modifiers().testFlag(Qt::AltModifier);
-	bool ctrl = e->modifiers().testFlag(Qt::ControlModifier) || e->modifiers().testFlag(Qt::MetaModifier);
-	bool enterSubmit = (_mode != Mode::MultiLine)
+	const auto shift = e->modifiers().testFlag(Qt::ShiftModifier);
+	const auto alt = e->modifiers().testFlag(Qt::AltModifier);
+	const auto macmeta = Platform::IsMac()
+		&& e->modifiers().testFlag(Qt::ControlModifier)
+		&& !e->modifiers().testFlag(Qt::MetaModifier)
+		&& !e->modifiers().testFlag(Qt::AltModifier);
+	const auto ctrl = e->modifiers().testFlag(Qt::ControlModifier)
+		|| e->modifiers().testFlag(Qt::MetaModifier);
+	const auto enterSubmit = (_mode != Mode::MultiLine)
 		|| ShouldSubmit(_submitSettings, e->modifiers());
-	bool enter = (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return);
+	const auto enter = (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return);
+	const auto backspace = (e->key() == Qt::Key_Backspace);
 	if (e->key() == Qt::Key_Left
 		|| e->key() == Qt::Key_Right
 		|| e->key() == Qt::Key_Up
@ -2674,12 +2680,12 @@ void InputField::keyPressEventInner(QKeyEvent *e) {
 		_reverseMarkdownReplacement = false;
 	}

-	if (macmeta && e->key() == Qt::Key_Backspace) {
+	if (macmeta && backspace) {
 		QTextCursor tc(textCursor()), start(tc);
 		start.movePosition(QTextCursor::StartOfLine);
 		tc.setPosition(start.position(), QTextCursor::KeepAnchor);
 		tc.removeSelectedText();
-	} else if (e->key() == Qt::Key_Backspace
+	} else if (backspace
 		&& e->modifiers() == 0
 		&& revertFormatReplace()) {
 		e->accept();
@ -2716,12 +2722,22 @@ void InputField::keyPressEventInner(QKeyEvent *e) {
 	} else {
 		const auto text = e->text();
 		const auto oldPosition = textCursor().position();
-		if (enter && ctrl) {
-			e->setModifiers(e->modifiers() & ~Qt::ControlModifier);
-		} else if (enter && shift) {
-			e->setModifiers(e->modifiers() & ~Qt::ShiftModifier);
+		const auto oldModifiers = e->modifiers();
+		const auto allowedModifiers = (enter && ctrl)
+			? (~Qt::ControlModifier)
+			: (enter && shift)
+			? (~Qt::ShiftModifier)
+			: (backspace && Platform::IsLinux())
+			? (Qt::ControlModifier)
+			: oldModifiers;
+		const auto changeModifiers = (oldModifiers & ~allowedModifiers) != 0;
+		if (changeModifiers) {
+			e->setModifiers(oldModifiers & allowedModifiers);
 		}
 		_inner->QTextEdit::keyPressEvent(e);
+		if (changeModifiers) {
+			e->setModifiers(oldModifiers);
+		}
 		auto cursor = textCursor();
 		if (cursor.position() == oldPosition) {
 			bool check = false;
@ -4023,18 +4039,20 @@ PasswordInput::PasswordInput(
 	setEchoMode(QLineEdit::Password);
 }

-PortInput::PortInput(
+NumberInput::NumberInput(
 	QWidget *parent,
 	const style::InputField &st,
 	rpl::producer<QString> placeholder,
-	const QString &val)
-: MaskedInputField(parent, st, std::move(placeholder), val) {
-	if (!val.toInt() || val.toInt() > 65535) {
+	const QString &value,
+	int limit)
+: MaskedInputField(parent, st, std::move(placeholder), value)
+, _limit(limit) {
+	if (!value.toInt() || (limit > 0 && value.toInt() > limit)) {
 		setText(QString());
 	}
 }

-void PortInput::correctValue(
+void NumberInput::correctValue(
 		const QString &was,
 		int wasCursor,
 		QString &now,
@ -4052,7 +4070,7 @@ void PortInput::correctValue(
 	if (!newText.toInt()) {
 		newText = QString();
 		newPos = 0;
-	} else if (newText.toInt() > 65535) {
+	} else if (_limit > 0 && newText.toInt() > _limit) {
 		newText = was;
 		newPos = wasCursor;
 	}
--- a/ui/widgets/input_fields.h
+++ b/ui/widgets/input_fields.h
@ -697,9 +697,14 @@ public:

 };

-class PortInput : public MaskedInputField {
+class NumberInput : public MaskedInputField {
 public:
-	PortInput(QWidget *parent, const style::InputField &st, rpl::producer<QString> placeholder, const QString &val);
+	NumberInput(
+		QWidget *parent,
+		const style::InputField &st,
+		rpl::producer<QString> placeholder,
+		const QString &value,
+		int limit);

 protected:
 	void correctValue(
@ -708,6 +713,9 @@ protected:
 		QString &now,
 		int &nowCursor) override;

+private:
+	int _limit = 0;
+
 };

 class HexInput : public MaskedInputField {
--- a/ui/widgets/labels.cpp
+++ b/ui/widgets/labels.cpp
@ -637,12 +637,17 @@ void FlatLabel::showContextMenu(QContextMenuEvent *e, ContextMenuReason reason)
 	_contextMenu = new PopupMenu(this);

 	if (fullSelection && !_contextCopyText.isEmpty()) {
-		_contextMenu->addAction(_contextCopyText, this, SLOT(onCopyContextText()));
+		_contextMenu->addAction(
+			_contextCopyText,
+			[=] { onCopyContextText(); });
 	} else if (uponSelection && !fullSelection) {
-		const auto text = Integration::Instance().phraseContextCopySelected();
-		_contextMenu->addAction(text, this, SLOT(onCopySelectedText()));
+		_contextMenu->addAction(
+			Integration::Instance().phraseContextCopySelected(),
+			[=] { onCopySelectedText(); });
 	} else if (_selectable && !hasSelection && !_contextCopyText.isEmpty()) {
-		_contextMenu->addAction(_contextCopyText, this, SLOT(onCopyContextText()));
+		_contextMenu->addAction(
+			_contextCopyText,
+			[=] { onCopyContextText(); });
 	}

 	if (const auto link = ClickHandler::getActive()) {
--- a/ui/widgets/menu.cpp
+++ b/ui/widgets/menu.cpp
@ -1,523 +0,0 @@
-// This file is part of Desktop App Toolkit,
-// a set of libraries for developing nice desktop applications.
-//
-// For license and copyright information please follow this link:
-// https://github.com/desktop-app/legal/blob/master/LEGAL
-//
-#include "ui/widgets/menu.h"
-
-#include "ui/effects/ripple_animation.h"
-#include "ui/widgets/checkbox.h"
-#include "ui/text/text.h"
-
-#include <QtGui/QtEvents>
-
-namespace Ui {
-namespace {
-
-[[nodiscard]] TextWithEntities ParseMenuItem(const QString &text) {
-	auto result = TextWithEntities();
-	result.text.reserve(text.size());
-	auto afterAmpersand = false;
-	for (const auto ch : text) {
-		if (afterAmpersand) {
-			afterAmpersand = false;
-			if (ch == '&') {
-				result.text.append(ch);
-			} else {
-				result.entities.append(EntityInText{
-					EntityType::Underline,
-					result.text.size(),
-					1 });
-				result.text.append(ch);
-			}
-		} else if (ch == '&') {
-			afterAmpersand = true;
-		} else {
-			result.text.append(ch);
-		}
-	}
-	return result;
-}
-
-TextParseOptions MenuTextOptions = {
-	TextParseLinks | TextParseRichText, // flags
-	0, // maxw
-	0, // maxh
-	Qt::LayoutDirectionAuto, // dir
-};
-
-} // namespace
-
-struct Menu::ActionData {
-	Text::String text;
-	QString shortcut;
-	const style::icon *icon = nullptr;
-	const style::icon *iconOver = nullptr;
-	std::unique_ptr<RippleAnimation> ripple;
-	std::unique_ptr<ToggleView> toggle;
-	int textWidth = 0;
-	bool hasSubmenu = false;
-};
-
-Menu::Menu(QWidget *parent, const style::Menu &st)
-: RpWidget(parent)
-, _st(st)
-, _itemHeight(_st.itemPadding.top() + _st.itemStyle.font->height + _st.itemPadding.bottom())
-, _separatorHeight(_st.separatorPadding.top() + _st.separatorWidth + _st.separatorPadding.bottom()) {
-	init();
-}
-
-Menu::Menu(QWidget *parent, QMenu *menu, const style::Menu &st)
-: RpWidget(parent)
-, _st(st)
-, _wappedMenu(menu)
-, _itemHeight(_st.itemPadding.top() + _st.itemStyle.font->height + _st.itemPadding.bottom())
-, _separatorHeight(_st.separatorPadding.top() + _st.separatorWidth + _st.separatorPadding.bottom()) {
-	init();
-
-	_wappedMenu->setParent(this);
-	for (auto action : _wappedMenu->actions()) {
-		addAction(action);
-	}
-	_wappedMenu->hide();
-}
-
-Menu::~Menu() = default;
-
-void Menu::init() {
-	resize(_forceWidth ? _forceWidth : _st.widthMin, _st.skip * 2);
-
-	setMouseTracking(true);
-
-	if (_st.itemBg->c.alpha() == 255) {
-		setAttribute(Qt::WA_OpaquePaintEvent);
-	}
-}
-
-not_null<QAction*> Menu::addAction(const QString &text, const QObject *receiver, const char* member, const style::icon *icon, const style::icon *iconOver) {
-	const auto action = addAction(new QAction(text, this), icon, iconOver);
-	connect(action, SIGNAL(triggered(bool)), receiver, member, Qt::QueuedConnection);
-	return action;
-}
-
-not_null<QAction*> Menu::addAction(const QString &text, Fn<void()> callback, const style::icon *icon, const style::icon *iconOver) {
-	const auto action = addAction(new QAction(text, this), icon, iconOver);
-	connect(action, &QAction::triggered, action, std::move(callback), Qt::QueuedConnection);
-	return action;
-}
-
-not_null<QAction*> Menu::addAction(const QString &text, std::unique_ptr<QMenu> submenu) {
-	const auto action = new QAction(text, this);
-	action->setMenu(submenu.release());
-	return addAction(action, nullptr, nullptr);
-}
-
-not_null<QAction*> Menu::addAction(not_null<QAction*> action, const style::icon *icon, const style::icon *iconOver) {
-	connect(action, &QAction::changed, this, [=] {
-		actionChanged();
-	});
-	_actions.emplace_back(action);
-	_actionsData.push_back([&] {
-		auto data = ActionData();
-		data.icon = icon;
-		data.iconOver = iconOver ? iconOver : icon;
-		data.hasSubmenu = (action->menu() != nullptr);
-		return data;
-	}());
-
-	auto newWidth = qMax(width(), _st.widthMin);
-	newWidth = processAction(action, _actions.size() - 1, newWidth);
-	auto newHeight = height() + (action->isSeparator() ? _separatorHeight : _itemHeight);
-	resize(_forceWidth ? _forceWidth : newWidth, newHeight);
-	if (_resizedCallback) {
-		_resizedCallback();
-	}
-	updateSelected(QCursor::pos());
-	update();
-
-	return action;
-}
-
-not_null<QAction*> Menu::addSeparator() {
-	const auto separator = new QAction(this);
-	separator->setSeparator(true);
-	return addAction(separator);
-}
-
-void Menu::clearActions() {
-	setSelected(-1);
-	setPressed(-1);
-	_actionsData.clear();
-	for (auto action : base::take(_actions)) {
-		if (action->parent() == this) {
-			delete action;
-		}
-	}
-	resize(_forceWidth ? _forceWidth : _st.widthMin, _st.skip * 2);
-	if (_resizedCallback) {
-		_resizedCallback();
-	}
-}
-
-void Menu::finishAnimating() {
-	for (auto &data : _actionsData) {
-		if (data.ripple) {
-			data.ripple.reset();
-		}
-		if (data.toggle) {
-			data.toggle->finishAnimating();
-		}
-	}
-}
-
-int Menu::processAction(not_null<QAction*> action, int index, int width) {
-	auto &data = _actionsData[index];
-	if (action->isSeparator() || action->text().isEmpty()) {
-		data.shortcut = QString();
-		data.text.clear();
-	} else {
-		auto actionTextParts = action->text().split('\t');
-		auto actionText = actionTextParts.empty() ? QString() : actionTextParts[0];
-		auto actionShortcut = (actionTextParts.size() > 1) ? actionTextParts[1] : QString();
-		data.text.setMarkedText(_st.itemStyle, ParseMenuItem(actionText), MenuTextOptions);
-		const auto textw = data.text.maxWidth();
-		int goodw = _st.itemPadding.left() + textw + _st.itemPadding.right();
-		if (data.hasSubmenu) {
-			goodw += _st.itemPadding.right() + _st.arrow.width();
-		} else if (!actionShortcut.isEmpty()) {
-			goodw += _st.itemPadding.right() + _st.itemStyle.font->width(actionShortcut);
-		}
-		if (action->isCheckable()) {
-			auto updateCallback = [this, index] { updateItem(index); };
-			if (data.toggle) {
-				data.toggle->setUpdateCallback(updateCallback);
-				data.toggle->setChecked(action->isChecked(), anim::type::normal);
-			} else {
-				data.toggle = std::make_unique<ToggleView>(_st.itemToggle, action->isChecked(), updateCallback);
-			}
-			goodw += _st.itemPadding.right() + data.toggle->getSize().width() - _st.itemToggleShift;
-		} else {
-			data.toggle.reset();
-		}
-		width = std::clamp(goodw, width, _st.widthMax);
-		data.textWidth = width - (goodw - textw);
-		data.shortcut = actionShortcut;
-	}
-	return width;
-}
-
-void Menu::setShowSource(TriggeredSource source) {
-	_mouseSelection = (source == TriggeredSource::Mouse);
-	setSelected((source == TriggeredSource::Mouse || _actions.empty()) ? -1 : 0);
-}
-
-const std::vector<not_null<QAction*>> &Menu::actions() const {
-	return _actions;
-}
-
-void Menu::setForceWidth(int forceWidth) {
-	_forceWidth = forceWidth;
-	resize(_forceWidth, height());
-}
-
-void Menu::actionChanged() {
-	auto newWidth = _st.widthMin;
-	auto index = 0;
-	for (const auto action : _actions) {
-		newWidth = processAction(action, index++, newWidth);
-	}
-	if (newWidth != width() && !_forceWidth) {
-		resize(newWidth, height());
-		if (_resizedCallback) {
-			_resizedCallback();
-		}
-	}
-	update();
-}
-
-void Menu::paintEvent(QPaintEvent *e) {
-	Painter p(this);
-
-	auto clip = e->rect();
-
-	auto topskip = QRect(0, 0, width(), _st.skip);
-	auto bottomskip = QRect(0, height() - _st.skip, width(), _st.skip);
-	if (clip.intersects(topskip)) p.fillRect(clip.intersected(topskip), _st.itemBg);
-	if (clip.intersects(bottomskip)) p.fillRect(clip.intersected(bottomskip), _st.itemBg);
-
-	int top = _st.skip;
-	p.translate(0, top);
-	p.setFont(_st.itemStyle.font);
-	for (int i = 0, count = int(_actions.size()); i != count; ++i) {
-		if (clip.top() + clip.height() <= top) break;
-
-		const auto action = _actions[i];
-		auto &data = _actionsData[i];
-		auto actionHeight = action->isSeparator() ? _separatorHeight : _itemHeight;
-		top += actionHeight;
-		if (clip.top() < top) {
-			if (action->isSeparator()) {
-				p.fillRect(0, 0, width(), actionHeight, _st.itemBg);
-				p.fillRect(_st.separatorPadding.left(), _st.separatorPadding.top(), width() - _st.separatorPadding.left() - _st.separatorPadding.right(), _st.separatorWidth, _st.separatorFg);
-			} else {
-				auto enabled = action->isEnabled();
-				auto selected = ((i == _selected || i == _pressed) && enabled);
-				if (selected && _st.itemBgOver->c.alpha() < 255) {
-					p.fillRect(0, 0, width(), actionHeight, _st.itemBg);
-				}
-				p.fillRect(0, 0, width(), actionHeight, selected ? _st.itemBgOver : _st.itemBg);
-				if (data.ripple) {
-					data.ripple->paint(p, 0, 0, width());
-					if (data.ripple->empty()) {
-						data.ripple.reset();
-					}
-				}
-				if (auto icon = (selected ? data.iconOver : data.icon)) {
-					icon->paint(p, _st.itemIconPosition, width());
-				}
-				p.setPen(selected ? _st.itemFgOver : (enabled ? _st.itemFg : _st.itemFgDisabled));
-				data.text.drawLeftElided(p, _st.itemPadding.left(), _st.itemPadding.top(), data.textWidth, width());
-				if (data.hasSubmenu) {
-					const auto left = width() - _st.itemPadding.right() - _st.arrow.width();
-					const auto top = (_itemHeight - _st.arrow.height()) / 2;
-					if (enabled) {
-						_st.arrow.paint(p, left, top, width());
-					} else {
-						_st.arrow.paint(
-							p,
-							left,
-							top,
-							width(),
-							_st.itemFgDisabled->c);
-					}
-				} else if (!data.shortcut.isEmpty()) {
-					p.setPen(selected ? _st.itemFgShortcutOver : (enabled ? _st.itemFgShortcut : _st.itemFgShortcutDisabled));
-					p.drawTextRight(_st.itemPadding.right(), _st.itemPadding.top(), width(), data.shortcut);
-				} else if (data.toggle) {
-					auto toggleSize = data.toggle->getSize();
-					data.toggle->paint(p, width() - _st.itemPadding.right() - toggleSize.width() + _st.itemToggleShift, (_itemHeight - toggleSize.height()) / 2, width());
-				}
-			}
-		}
-		p.translate(0, actionHeight);
-	}
-}
-
-void Menu::updateSelected(QPoint globalPosition) {
-	if (!_mouseSelection) return;
-
-	auto p = mapFromGlobal(globalPosition) - QPoint(0, _st.skip);
-	auto selected = -1, top = 0;
-	while (top <= p.y() && ++selected < _actions.size()) {
-		top += _actions[selected]->isSeparator() ? _separatorHeight : _itemHeight;
-	}
-	setSelected((selected >= 0 && selected < _actions.size() && _actions[selected]->isEnabled() && !_actions[selected]->isSeparator()) ? selected : -1);
-}
-
-void Menu::itemPressed(TriggeredSource source) {
-	if (source == TriggeredSource::Mouse && !_mouseSelection) {
-		return;
-	}
-	if (_selected >= 0 && _selected < _actions.size() && _actions[_selected]->isEnabled()) {
-		setPressed(_selected);
-		if (source == TriggeredSource::Mouse) {
-			if (!_actionsData[_pressed].ripple) {
-				auto mask = RippleAnimation::rectMask(QSize(width(), _itemHeight));
-				_actionsData[_pressed].ripple = std::make_unique<RippleAnimation>(_st.ripple, std::move(mask), [this, selected = _pressed] {
-					updateItem(selected);
-				});
-			}
-			_actionsData[_pressed].ripple->add(mapFromGlobal(QCursor::pos()) - QPoint(0, itemTop(_pressed)));
-		} else {
-			itemReleased(source);
-		}
-	}
-}
-
-void Menu::itemReleased(TriggeredSource source) {
-	if (_pressed >= 0 && _pressed < _actions.size()) {
-		auto pressed = _pressed;
-		setPressed(-1);
-		if (source == TriggeredSource::Mouse && _actionsData[pressed].ripple) {
-			_actionsData[pressed].ripple->lastStop();
-		}
-		if (pressed == _selected && _triggeredCallback) {
-			_triggeredCallback(_actions[_selected], itemTop(_selected), source);
-		}
-	}
-}
-
-void Menu::keyPressEvent(QKeyEvent *e) {
-	auto key = e->key();
-	if (!_keyPressDelegate || !_keyPressDelegate(key)) {
-		handleKeyPress(key);
-	}
-}
-
-void Menu::handleKeyPress(int key) {
-	if (key == Qt::Key_Enter || key == Qt::Key_Return) {
-		itemPressed(TriggeredSource::Keyboard);
-		return;
-	}
-	if (key == (style::RightToLeft() ? Qt::Key_Left : Qt::Key_Right)) {
-		if (_selected >= 0 && _actionsData[_selected].hasSubmenu) {
-			itemPressed(TriggeredSource::Keyboard);
-			return;
-		} else if (_selected < 0 && !_actions.empty()) {
-			_mouseSelection = false;
-			setSelected(0);
-		}
-	}
-	if ((key != Qt::Key_Up && key != Qt::Key_Down) || _actions.empty()) {
-		return;
-	}
-
-	auto delta = (key == Qt::Key_Down ? 1 : -1), start = _selected;
-	if (start < 0 || start >= _actions.size()) {
-		start = (delta > 0) ? (_actions.size() - 1) : 0;
-	}
-	auto newSelected = start;
-	do {
-		newSelected += delta;
-		if (newSelected < 0) {
-			newSelected += _actions.size();
-		} else if (newSelected >= _actions.size()) {
-			newSelected -= _actions.size();
-		}
-	} while (newSelected != start && (!_actions[newSelected]->isEnabled() || _actions[newSelected]->isSeparator()));
-
-	if (_actions[newSelected]->isEnabled() && !_actions[newSelected]->isSeparator()) {
-		_mouseSelection = false;
-		setSelected(newSelected);
-	}
-}
-
-void Menu::clearSelection() {
-	_mouseSelection = false;
-	setSelected(-1);
-}
-
-void Menu::clearMouseSelection() {
-	if (_mouseSelection && !_childShown) {
-		clearSelection();
-	}
-}
-
-void Menu::enterEventHook(QEvent *e) {
-	QPoint mouse = QCursor::pos();
-	if (!rect().marginsRemoved(QMargins(0, _st.skip, 0, _st.skip)).contains(mapFromGlobal(mouse))) {
-		clearMouseSelection();
-	}
-	return TWidget::enterEventHook(e);
-}
-
-void Menu::leaveEventHook(QEvent *e) {
-	clearMouseSelection();
-	return TWidget::leaveEventHook(e);
-}
-
-void Menu::setSelected(int selected) {
-	if (selected >= _actions.size()) {
-		selected = -1;
-	}
-	if (_selected != selected) {
-		updateSelectedItem();
-		if (_selected >= 0 && _selected != _pressed && _actionsData[_selected].toggle) {
-			_actionsData[_selected].toggle->setStyle(_st.itemToggle);
-		}
-		_selected = selected;
-		if (_selected >= 0 && _actionsData[_selected].toggle && _actions[_selected]->isEnabled()) {
-			_actionsData[_selected].toggle->setStyle(_st.itemToggleOver);
-		}
-		updateSelectedItem();
-		if (_activatedCallback) {
-			auto source = _mouseSelection ? TriggeredSource::Mouse : TriggeredSource::Keyboard;
-			_activatedCallback(
-				(_selected >= 0) ? _actions[_selected].get() : nullptr,
-				itemTop(_selected),
-				source);
-		}
-	}
-}
-
-void Menu::setPressed(int pressed) {
-	if (pressed >= _actions.size()) {
-		pressed = -1;
-	}
-	if (_pressed != pressed) {
-		if (_pressed >= 0 && _pressed != _selected && _actionsData[_pressed].toggle) {
-			_actionsData[_pressed].toggle->setStyle(_st.itemToggle);
-		}
-		_pressed = pressed;
-		if (_pressed >= 0 && _actionsData[_pressed].toggle && _actions[_pressed]->isEnabled()) {
-			_actionsData[_pressed].toggle->setStyle(_st.itemToggleOver);
-		}
-	}
-}
-
-int Menu::itemTop(int index) {
-	if (index > _actions.size()) {
-		index = _actions.size();
-	}
-	int top = _st.skip;
-	for (int i = 0; i < index; ++i) {
-		top += _actions.at(i)->isSeparator() ? _separatorHeight : _itemHeight;
-	}
-	return top;
-}
-
-void Menu::updateItem(int index) {
-	if (index >= 0 && index < _actions.size()) {
-		update(0, itemTop(index), width(), _actions[index]->isSeparator() ? _separatorHeight : _itemHeight);
-	}
-}
-
-void Menu::updateSelectedItem() {
-	updateItem(_selected);
-}
-
-void Menu::mouseMoveEvent(QMouseEvent *e) {
-	handleMouseMove(e->globalPos());
-}
-
-void Menu::handleMouseMove(QPoint globalPosition) {
-	auto inner = rect().marginsRemoved(QMargins(0, _st.skip, 0, _st.skip));
-	auto localPosition = mapFromGlobal(globalPosition);
-	if (inner.contains(localPosition)) {
-		_mouseSelection = true;
-		updateSelected(globalPosition);
-	} else {
-		clearMouseSelection();
-		if (_mouseMoveDelegate) {
-			_mouseMoveDelegate(globalPosition);
-		}
-	}
-}
-
-void Menu::mousePressEvent(QMouseEvent *e) {
-	handleMousePress(e->globalPos());
-}
-
-void Menu::mouseReleaseEvent(QMouseEvent *e) {
-	handleMouseRelease(e->globalPos());
-}
-
-void Menu::handleMousePress(QPoint globalPosition) {
-	handleMouseMove(globalPosition);
-	if (rect().contains(mapFromGlobal(globalPosition))) {
-		itemPressed(TriggeredSource::Mouse);
-	} else if (_mousePressDelegate) {
-		_mousePressDelegate(globalPosition);
-	}
-}
-
-void Menu::handleMouseRelease(QPoint globalPosition) {
-	handleMouseMove(globalPosition);
-	itemReleased(TriggeredSource::Mouse);
-	if (!rect().contains(mapFromGlobal(globalPosition)) && _mouseReleaseDelegate) {
-		_mouseReleaseDelegate(globalPosition);
-	}
-}
-
-} // namespace Ui
--- a/ui/widgets/menu/menu.cpp
+++ b/ui/widgets/menu/menu.cpp
@ -0,0 +1,347 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/widgets/menu/menu.h"
+
+#include "ui/widgets/menu/menu_action.h"
+#include "ui/widgets/menu/menu_item_base.h"
+#include "ui/widgets/menu/menu_separator.h"
+
+#include <QtGui/QtEvents>
+
+namespace Ui::Menu {
+
+Menu::Menu(QWidget *parent, const style::Menu &st)
+: RpWidget(parent)
+, _st(st) {
+	init();
+}
+
+Menu::Menu(QWidget *parent, QMenu *menu, const style::Menu &st)
+: RpWidget(parent)
+, _st(st)
+, _wappedMenu(menu) {
+	init();
+
+	_wappedMenu->setParent(this);
+	for (auto action : _wappedMenu->actions()) {
+		addAction(action);
+	}
+	_wappedMenu->hide();
+}
+
+Menu::~Menu() = default;
+
+void Menu::init() {
+	resize(_forceWidth ? _forceWidth : _st.widthMin, _st.skip * 2);
+
+	setMouseTracking(true);
+
+	if (_st.itemBg->c.alpha() == 255) {
+		setAttribute(Qt::WA_OpaquePaintEvent);
+	}
+
+	paintRequest(
+	) | rpl::start_with_next([=](const QRect &clip) {
+		Painter p(this);
+		p.fillRect(clip, _st.itemBg);
+	}, lifetime());
+
+	positionValue(
+	) | rpl::start_with_next([=] {
+		handleMouseMove(QCursor::pos());
+	}, lifetime());
+}
+
+not_null<QAction*> Menu::addAction(
+		const QString &text,
+		Fn<void()> callback,
+		const style::icon *icon,
+		const style::icon *iconOver) {
+	auto action = CreateAction(this, text, std::move(callback));
+	return addAction(std::move(action), icon, iconOver);
+}
+
+not_null<QAction*> Menu::addAction(
+		const QString &text,
+		std::unique_ptr<QMenu> submenu) {
+	const auto action = new QAction(text, this);
+	action->setMenu(submenu.release());
+	return addAction(action, nullptr, nullptr);
+}
+
+not_null<QAction*> Menu::addAction(
+		not_null<QAction*> action,
+		const style::icon *icon,
+		const style::icon *iconOver) {
+	if (action->isSeparator()) {
+		return addSeparator();
+	}
+	auto item = base::make_unique_q<Action>(
+		this,
+		_st,
+		std::move(action),
+		icon,
+		iconOver ? iconOver : icon);
+	return addAction(std::move(item));
+}
+
+not_null<QAction*> Menu::addAction(base::unique_qptr<ItemBase> widget) {
+	const auto action = widget->action();
+	_actions.emplace_back(action);
+
+	widget->setParent(this);
+
+	const auto top = _actionWidgets.empty()
+		? 0
+		: _actionWidgets.back()->y() + _actionWidgets.back()->height();
+
+	widget->moveToLeft(0, top);
+	widget->show();
+
+	widget->setIndex(_actionWidgets.size());
+
+	widget->selects(
+	) | rpl::start_with_next([=](const CallbackData &data) {
+		if (!data.selected) {
+			return;
+		}
+		for (auto i = 0; i < _actionWidgets.size(); i++) {
+			if (i != data.index) {
+				_actionWidgets[i]->setSelected(false);
+			}
+		}
+		if (_activatedCallback) {
+			_activatedCallback(data);
+		}
+	}, widget->lifetime());
+
+	widget->clicks(
+	) | rpl::start_with_next([=](const CallbackData &data) {
+		if (_triggeredCallback) {
+			_triggeredCallback(data);
+		}
+	}, widget->lifetime());
+
+	const auto raw = widget.get();
+	_actionWidgets.push_back(std::move(widget));
+
+	raw->minWidthValue(
+	) | rpl::start_with_next([=] {
+		const auto newWidth = _forceWidth
+			? _forceWidth
+			: std::clamp(
+				_actionWidgets.empty()
+					? 0
+					: (*ranges::max_element(
+						_actionWidgets,
+						std::less<>(),
+						&ItemBase::minWidth))->minWidth(),
+				_st.widthMin,
+				_st.widthMax);
+		resizeFromInner(newWidth, height());
+	}, raw->lifetime());
+
+	const auto newHeight = ranges::accumulate(
+		_actionWidgets,
+		0,
+		ranges::plus(),
+		&ItemBase::height);
+	resizeFromInner(width(), newHeight);
+	updateSelected(QCursor::pos());
+
+	return action;
+}
+
+not_null<QAction*> Menu::addSeparator() {
+	const auto separator = new QAction(this);
+	separator->setSeparator(true);
+	auto item = base::make_unique_q<Separator>(this, _st, separator);
+	return addAction(std::move(item));
+}
+
+void Menu::clearActions() {
+	_actionWidgets.clear();
+	for (auto action : base::take(_actions)) {
+		if (action->parent() == this) {
+			delete action;
+		}
+	}
+	resizeFromInner(_forceWidth ? _forceWidth : _st.widthMin, _st.skip * 2);
+}
+
+void Menu::finishAnimating() {
+	for (const auto &widget : _actionWidgets) {
+		widget->finishAnimating();
+	}
+}
+
+bool Menu::empty() const {
+	return _actionWidgets.empty();
+}
+
+void Menu::resizeFromInner(int w, int h) {
+	if ((w == width()) && (h == height())) {
+		return;
+	}
+	resize(w, h);
+	_resizesFromInner.fire({});
+}
+
+rpl::producer<> Menu::resizesFromInner() const {
+	return _resizesFromInner.events();
+}
+
+void Menu::setShowSource(TriggeredSource source) {
+	const auto mouseSelection = (source == TriggeredSource::Mouse);
+	setSelected(
+		(mouseSelection || _actions.empty()) ? -1 : 0,
+		mouseSelection);
+}
+
+const std::vector<not_null<QAction*>> &Menu::actions() const {
+	return _actions;
+}
+
+void Menu::setForceWidth(int forceWidth) {
+	_forceWidth = forceWidth;
+	resizeFromInner(_forceWidth, height());
+}
+
+void Menu::updateSelected(QPoint globalPosition) {
+	const auto p = mapFromGlobal(globalPosition) - QPoint(0, _st.skip);
+	for (const auto &widget : _actionWidgets) {
+		const auto widgetRect = QRect(widget->pos(), widget->size());
+		if (widgetRect.contains(p)) {
+			widget->setSelected(true);
+			break;
+		}
+	}
+}
+
+void Menu::itemPressed(TriggeredSource source) {
+	if (const auto action = findSelectedAction()) {
+		if (action->lastTriggeredSource() == source) {
+			action->setClicked(source);
+		}
+	}
+}
+
+void Menu::keyPressEvent(QKeyEvent *e) {
+	const auto key = e->key();
+	if (!_keyPressDelegate || !_keyPressDelegate(key)) {
+		handleKeyPress(e);
+	}
+}
+
+ItemBase *Menu::findSelectedAction() const {
+	const auto it = ranges::find_if(_actionWidgets, &ItemBase::isSelected);
+	return (it == end(_actionWidgets)) ? nullptr : it->get();
+}
+
+void Menu::handleKeyPress(not_null<QKeyEvent*> e) {
+	const auto key = e->key();
+	const auto selected = findSelectedAction();
+	if ((key != Qt::Key_Up && key != Qt::Key_Down) || _actions.empty()) {
+		if (selected) {
+			selected->handleKeyPress(e);
+		}
+		return;
+	}
+
+	const auto delta = (key == Qt::Key_Down ? 1 : -1);
+	auto start = selected ? selected->index() : -1;
+	if (start < 0 || start >= _actions.size()) {
+		start = (delta > 0) ? (_actions.size() - 1) : 0;
+	}
+	auto newSelected = start;
+	do {
+		newSelected += delta;
+		if (newSelected < 0) {
+			newSelected += _actions.size();
+		} else if (newSelected >= _actions.size()) {
+			newSelected -= _actions.size();
+		}
+	} while (newSelected != start && (!_actionWidgets[newSelected]->isEnabled()));
+
+	if (_actionWidgets[newSelected]->isEnabled()) {
+		setSelected(newSelected, false);
+	}
+}
+
+void Menu::clearSelection() {
+	setSelected(-1, false);
+}
+
+void Menu::clearMouseSelection() {
+	const auto selected = findSelectedAction();
+	const auto mouseSelection = selected
+		? (selected->lastTriggeredSource() == TriggeredSource::Mouse)
+		: false;
+	if (mouseSelection && !_childShown) {
+		clearSelection();
+	}
+}
+
+void Menu::setSelected(int selected, bool isMouseSelection) {
+	if (selected >= _actionWidgets.size()) {
+		selected = -1;
+	}
+	const auto source = isMouseSelection
+		? TriggeredSource::Mouse
+		: TriggeredSource::Keyboard;
+	if (const auto selectedItem = findSelectedAction()) {
+		if (selectedItem->index() == selected) {
+			return;
+		}
+		selectedItem->setSelected(false, source);
+	}
+	if (selected >= 0) {
+		_actionWidgets[selected]->setSelected(true, source);
+	}
+}
+
+void Menu::mouseMoveEvent(QMouseEvent *e) {
+	handleMouseMove(e->globalPos());
+}
+
+void Menu::handleMouseMove(QPoint globalPosition) {
+	const auto margins = style::margins(0, _st.skip, 0, _st.skip);
+	const auto inner = rect().marginsRemoved(margins);
+	const auto localPosition = mapFromGlobal(globalPosition);
+	if (inner.contains(localPosition)) {
+		updateSelected(globalPosition);
+	} else {
+		clearMouseSelection();
+		if (_mouseMoveDelegate) {
+			_mouseMoveDelegate(globalPosition);
+		}
+	}
+}
+
+void Menu::mousePressEvent(QMouseEvent *e) {
+	handleMousePress(e->globalPos());
+}
+
+void Menu::mouseReleaseEvent(QMouseEvent *e) {
+	handleMouseRelease(e->globalPos());
+}
+
+void Menu::handleMousePress(QPoint globalPosition) {
+	handleMouseMove(globalPosition);
+	if (_mousePressDelegate) {
+		_mousePressDelegate(globalPosition);
+	}
+}
+
+void Menu::handleMouseRelease(QPoint globalPosition) {
+	if (!rect().contains(mapFromGlobal(globalPosition))
+			&& _mouseReleaseDelegate) {
+		_mouseReleaseDelegate(globalPosition);
+	}
+}
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu.h
+++ b/ui/widgets/menu/menu.h
@ -6,14 +6,16 @@
 //
 #pragma once

+#include "base/unique_qptr.h"
 #include "ui/rp_widget.h"
+#include "ui/widgets/menu/menu_common.h"
 #include "styles/style_widgets.h"

 #include <QtWidgets/QMenu>

-namespace Ui {
+namespace Ui::Menu {

-class ToggleView;
+class ItemBase;
 class RippleAnimation;

 class Menu : public RpWidget {
@ -22,19 +24,27 @@ public:
 	Menu(QWidget *parent, QMenu *menu, const style::Menu &st = st::defaultMenu);
 	~Menu();

-	not_null<QAction*> addAction(const QString &text, const QObject *receiver, const char* member, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
-	not_null<QAction*> addAction(const QString &text, Fn<void()> callback, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
-	not_null<QAction*> addAction(const QString &text, std::unique_ptr<QMenu> submenu);
+	[[nodiscard]] const style::Menu &st() const {
+		return _st;
+	}
+
+	not_null<QAction*> addAction(base::unique_qptr<ItemBase> widget);
+	not_null<QAction*> addAction(
+		const QString &text,
+		Fn<void()> callback,
+		const style::icon *icon = nullptr,
+		const style::icon *iconOver = nullptr);
+	not_null<QAction*> addAction(
+		const QString &text,
+		std::unique_ptr<QMenu> submenu);
 	not_null<QAction*> addSeparator();
 	void clearActions();
 	void finishAnimating();

+	bool empty() const;
+
 	void clearSelection();

-	enum class TriggeredSource {
-		Mouse,
-		Keyboard,
-	};
 	void setChildShown(bool shown) {
 		_childShown = shown;
 	}
@ -43,21 +53,17 @@ public:

 	const std::vector<not_null<QAction*>> &actions() const;

-	void setResizedCallback(Fn<void()> callback) {
-		_resizedCallback = std::move(callback);
-	}
-
-	void setActivatedCallback(Fn<void(QAction *action, int actionTop, TriggeredSource source)> callback) {
+	void setActivatedCallback(Fn<void(const CallbackData &data)> callback) {
 		_activatedCallback = std::move(callback);
 	}
-	void setTriggeredCallback(Fn<void(QAction *action, int actionTop, TriggeredSource source)> callback) {
+	void setTriggeredCallback(Fn<void(const CallbackData &data)> callback) {
 		_triggeredCallback = std::move(callback);
 	}

 	void setKeyPressDelegate(Fn<bool(int key)> delegate) {
 		_keyPressDelegate = std::move(delegate);
 	}
-	void handleKeyPress(int key);
+	void handleKeyPress(not_null<QKeyEvent*> e);

 	void setMouseMoveDelegate(Fn<void(QPoint globalPosition)> delegate) {
 		_mouseMoveDelegate = std::move(delegate);
@ -74,41 +80,36 @@ public:
 	}
 	void handleMouseRelease(QPoint globalPosition);

+	rpl::producer<> resizesFromInner() const;
+
 protected:
-	void paintEvent(QPaintEvent *e) override;
 	void keyPressEvent(QKeyEvent *e) override;
 	void mouseMoveEvent(QMouseEvent *e) override;
 	void mousePressEvent(QMouseEvent *e) override;
 	void mouseReleaseEvent(QMouseEvent *e) override;
-	void enterEventHook(QEvent *e) override;
-	void leaveEventHook(QEvent *e) override;

 private:
-	struct ActionData;
-
 	void updateSelected(QPoint globalPosition);
-	void actionChanged();
 	void init();

-	// Returns the new width.
-	int processAction(not_null<QAction*> action, int index, int width);
-	not_null<QAction*> addAction(not_null<QAction*> action, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
+	not_null<QAction*> addAction(
+		not_null<QAction*> action,
+		const style::icon *icon = nullptr,
+		const style::icon *iconOver = nullptr);

-	void setSelected(int selected);
-	void setPressed(int pressed);
+	void setSelected(int selected, bool isMouseSelection);
 	void clearMouseSelection();

-	int itemTop(int index);
-	void updateItem(int index);
-	void updateSelectedItem();
 	void itemPressed(TriggeredSource source);
-	void itemReleased(TriggeredSource source);
+
+	ItemBase *findSelectedAction() const;
+
+	void resizeFromInner(int w, int h);

 	const style::Menu &_st;

-	Fn<void()> _resizedCallback;
-	Fn<void(QAction *action, int actionTop, TriggeredSource source)> _activatedCallback;
-	Fn<void(QAction *action, int actionTop, TriggeredSource source)> _triggeredCallback;
+	Fn<void(const CallbackData &data)> _activatedCallback;
+	Fn<void(const CallbackData &data)> _triggeredCallback;
 	Fn<bool(int key)> _keyPressDelegate;
 	Fn<void(QPoint globalPosition)> _mouseMoveDelegate;
 	Fn<void(QPoint globalPosition)> _mousePressDelegate;
@ -116,17 +117,14 @@ private:

 	QMenu *_wappedMenu = nullptr;
 	std::vector<not_null<QAction*>> _actions;
-	std::vector<ActionData> _actionsData;
+	std::vector<base::unique_qptr<ItemBase>> _actionWidgets;

 	int _forceWidth = 0;
-	int _itemHeight, _separatorHeight;

-	bool _mouseSelection = false;
-
-	int _selected = -1;
-	int _pressed = -1;
 	bool _childShown = false;

+	rpl::event_stream<> _resizesFromInner;
+
 };

-} // namespace Ui
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_action.cpp
+++ b/ui/widgets/menu/menu_action.cpp
@ -0,0 +1,200 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/widgets/menu/menu_action.h"
+
+#include "ui/effects/ripple_animation.h"
+#include "ui/painter.h"
+
+#include <QtGui/QtEvents>
+
+namespace Ui::Menu {
+namespace {
+
+[[nodiscard]] TextWithEntities ParseMenuItem(const QString &text) {
+	auto result = TextWithEntities();
+	result.text.reserve(text.size());
+	auto afterAmpersand = false;
+	for (const auto ch : text) {
+		if (afterAmpersand) {
+			afterAmpersand = false;
+			if (ch == '&') {
+				result.text.append(ch);
+			} else {
+				result.entities.append(EntityInText{
+					EntityType::Underline,
+					result.text.size(),
+					1 });
+				result.text.append(ch);
+			}
+		} else if (ch == '&') {
+			afterAmpersand = true;
+		} else {
+			result.text.append(ch);
+		}
+	}
+	return result;
+}
+
+TextParseOptions MenuTextOptions = {
+	TextParseLinks | TextParseRichText, // flags
+	0, // maxw
+	0, // maxh
+	Qt::LayoutDirectionAuto, // dir
+};
+
+} // namespace
+
+Action::Action(
+	not_null<RpWidget*> parent,
+	const style::Menu &st,
+	not_null<QAction*> action,
+	const style::icon *icon,
+	const style::icon *iconOver)
+: ItemBase(parent, st)
+, _action(action)
+, _st(st)
+, _icon(icon)
+, _iconOver(iconOver)
+, _height(_st.itemPadding.top()
+	+ _st.itemStyle.font->height
+	+ _st.itemPadding.bottom()) {
+
+	setAcceptBoth(true);
+
+	initResizeHook(parent->sizeValue());
+	processAction();
+
+	paintRequest(
+	) | rpl::start_with_next([=] {
+		Painter p(this);
+		paint(p);
+	}, lifetime());
+
+	enableMouseSelecting();
+
+	connect(_action, &QAction::changed, [=] { processAction(); });
+}
+
+bool Action::hasSubmenu() const {
+	return _action->menu() != nullptr;
+}
+
+void Action::paint(Painter &p) {
+	const auto enabled = _action->isEnabled();
+	const auto selected = isSelected();
+	if (selected && _st.itemBgOver->c.alpha() < 255) {
+		p.fillRect(0, 0, width(), _height, _st.itemBg);
+	}
+	p.fillRect(0, 0, width(), _height, selected ? _st.itemBgOver : _st.itemBg);
+	if (isEnabled()) {
+		paintRipple(p, 0, 0);
+	}
+	if (const auto icon = (selected ? _iconOver : _icon)) {
+		icon->paint(p, _st.itemIconPosition, width());
+	}
+	p.setPen(selected ? _st.itemFgOver : (enabled ? _st.itemFg : _st.itemFgDisabled));
+	_text.drawLeftElided(p, _st.itemPadding.left(), _st.itemPadding.top(), _textWidth, width());
+	if (hasSubmenu()) {
+		const auto left = width() - _st.itemPadding.right() - _st.arrow.width();
+		const auto top = (_height - _st.arrow.height()) / 2;
+		if (enabled) {
+			_st.arrow.paint(p, left, top, width());
+		} else {
+			_st.arrow.paint(
+				p,
+				left,
+				top,
+				width(),
+				_st.itemFgDisabled->c);
+		}
+	} else if (!_shortcut.isEmpty()) {
+		p.setPen(selected
+			? _st.itemFgShortcutOver
+			: (enabled ? _st.itemFgShortcut : _st.itemFgShortcutDisabled));
+		p.drawTextRight(
+			_st.itemPadding.right(),
+			_st.itemPadding.top(),
+			width(),
+			_shortcut);
+	}
+}
+
+void Action::processAction() {
+	if (_action->text().isEmpty()) {
+		_shortcut = QString();
+		_text.clear();
+		return;
+	}
+	const auto actionTextParts = _action->text().split('\t');
+	const auto actionText = actionTextParts.empty()
+		? QString()
+		: actionTextParts[0];
+	const auto actionShortcut = (actionTextParts.size() > 1)
+		? actionTextParts[1]
+		: QString();
+	_text.setMarkedText(
+		_st.itemStyle,
+		ParseMenuItem(actionText),
+		MenuTextOptions);
+	const auto textWidth = _text.maxWidth();
+	const auto &padding = _st.itemPadding;
+
+	const auto additionalWidth = hasSubmenu()
+		? padding.right() + _st.arrow.width()
+		: (!actionShortcut.isEmpty())
+		? (padding.right() + _st.itemStyle.font->width(actionShortcut))
+		: 0;
+	const auto goodWidth = padding.left()
+		+ textWidth
+		+ padding.right()
+		+ additionalWidth;
+
+	const auto w = std::clamp(goodWidth, _st.widthMin, _st.widthMax);
+	_textWidth = w - (goodWidth - textWidth);
+	_shortcut = actionShortcut;
+	setMinWidth(w);
+	update();
+}
+
+bool Action::isEnabled() const {
+	return _action->isEnabled();
+}
+
+not_null<QAction*> Action::action() const {
+	return _action;
+}
+
+QPoint Action::prepareRippleStartPosition() const {
+	return mapFromGlobal(QCursor::pos());
+}
+
+QImage Action::prepareRippleMask() const {
+	return Ui::RippleAnimation::rectMask(size());
+}
+
+int Action::contentHeight() const {
+	return _height;
+}
+
+void Action::handleKeyPress(not_null<QKeyEvent*> e) {
+	if (!isSelected()) {
+		return;
+	}
+	const auto key = e->key();
+	if (key == Qt::Key_Enter || key == Qt::Key_Return) {
+		setClicked(TriggeredSource::Keyboard);
+		return;
+	}
+	if (key == (style::RightToLeft() ? Qt::Key_Left : Qt::Key_Right)) {
+		if (hasSubmenu()) {
+			setClicked(TriggeredSource::Keyboard);
+			return;
+		}
+	}
+}
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_action.h
+++ b/ui/widgets/menu/menu_action.h
@ -0,0 +1,55 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/text/text.h"
+#include "ui/widgets/menu/menu_item_base.h"
+#include "styles/style_widgets.h"
+
+class Painter;
+
+namespace Ui::Menu {
+
+class Action : public ItemBase {
+public:
+	Action(
+		not_null<RpWidget*> parent,
+		const style::Menu &st,
+		not_null<QAction*> action,
+		const style::icon *icon,
+		const style::icon *iconOver);
+
+	bool isEnabled() const override;
+	not_null<QAction*> action() const override;
+
+	void handleKeyPress(not_null<QKeyEvent*> e) override;
+
+protected:
+	QPoint prepareRippleStartPosition() const override;
+	QImage prepareRippleMask() const override;
+
+	int contentHeight() const override;
+
+private:
+	void processAction();
+	void paint(Painter &p);
+
+	bool hasSubmenu() const;
+
+	Text::String _text;
+	QString _shortcut;
+	const not_null<QAction*> _action;
+	const style::Menu &_st;
+	const style::icon *_icon;
+	const style::icon *_iconOver;
+//	std::unique_ptr<ToggleView> _toggle;
+	int _textWidth = 0;
+	const int _height;
+
+};
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_common.cpp
+++ b/ui/widgets/menu/menu_common.cpp
@ -0,0 +1,27 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/widgets/menu/menu_common.h"
+
+#include <QtWidgets/QAction>
+
+namespace Ui::Menu {
+
+not_null<QAction*> CreateAction(
+		QWidget *parent,
+		const QString &text,
+		Fn<void()> &&callback) {
+	const auto action = new QAction(text, parent);
+	parent->connect(
+		action,
+		&QAction::triggered,
+		action,
+		std::move(callback),
+		Qt::QueuedConnection);
+	return action;
+}
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_common.h
+++ b/ui/widgets/menu/menu_common.h
@ -0,0 +1,29 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+namespace Ui::Menu {
+
+enum class TriggeredSource {
+	Mouse,
+	Keyboard,
+};
+
+struct CallbackData {
+	QAction *action;
+	int actionTop = 0;
+	TriggeredSource source;
+	int index = 0;
+	bool selected = false;
+};
+
+not_null<QAction*> CreateAction(
+	QWidget *parent,
+	const QString &text,
+	Fn<void()> &&callback);
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_item_base.cpp
+++ b/ui/widgets/menu/menu_item_base.cpp
@ -0,0 +1,119 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/widgets/menu/menu_item_base.h"
+
+namespace Ui::Menu {
+
+ItemBase::ItemBase(
+	not_null<RpWidget*> parent,
+	const style::Menu &st)
+: RippleButton(parent, st.ripple) {
+}
+
+void ItemBase::setSelected(
+		bool selected,
+		TriggeredSource source) {
+	if (!isEnabled()) {
+		return;
+	}
+	if (_selected.current() != selected) {
+		setMouseTracking(!selected);
+		_lastTriggeredSource = source;
+		_selected = selected;
+		update();
+	}
+}
+
+bool ItemBase::isSelected() const {
+	return _selected.current();
+}
+
+rpl::producer<CallbackData> ItemBase::selects() const {
+	return _selected.changes(
+	) | rpl::map([=](bool selected) -> CallbackData {
+		return { action(), y(), _lastTriggeredSource, _index, selected };
+	});
+}
+
+TriggeredSource ItemBase::lastTriggeredSource() const {
+	return _lastTriggeredSource;
+}
+
+int ItemBase::index() const {
+	return _index;
+}
+
+void ItemBase::setIndex(int index) {
+	_index = index;
+}
+
+void ItemBase::setClicked(TriggeredSource source) {
+	if (isEnabled()) {
+		_lastTriggeredSource = source;
+		_clicks.fire({});
+	}
+}
+
+rpl::producer<CallbackData> ItemBase::clicks() const {
+	return rpl::merge(
+		AbstractButton::clicks() | rpl::to_empty,
+		_clicks.events()
+	) | rpl::filter([=] {
+		return isEnabled();
+	}) | rpl::map([=]() -> CallbackData {
+		return { action(), y(), _lastTriggeredSource, _index, true };
+	});
+}
+
+rpl::producer<int> ItemBase::minWidthValue() const {
+	return _minWidth.value();
+}
+
+int ItemBase::minWidth() const {
+	return _minWidth.current();
+}
+
+void ItemBase::initResizeHook(rpl::producer<QSize> &&size) {
+	std::move(
+		size
+	) | rpl::start_with_next([=](QSize s) {
+		resize(s.width(), contentHeight());
+	}, lifetime());
+}
+
+void ItemBase::setMinWidth(int w) {
+	_minWidth = w;
+}
+
+void ItemBase::finishAnimating() {
+	RippleButton::finishAnimating();
+}
+
+void ItemBase::enableMouseSelecting() {
+	enableMouseSelecting(this);
+}
+
+void ItemBase::enableMouseSelecting(not_null<RpWidget*> widget) {
+	widget->events(
+	) | rpl::start_with_next([=](not_null<QEvent*> e) {
+		const auto type = e->type();
+		if (((type == QEvent::Leave)
+			|| (type == QEvent::Enter)
+			|| (type == QEvent::MouseMove)) && action()->isEnabled()) {
+			setSelected(e->type() != QEvent::Leave);
+		} else if ((type == QEvent::MouseButtonRelease)
+			&& isEnabled()
+			&& isSelected()) {
+			const auto point = mapFromGlobal(QCursor::pos());
+			if (!rect().contains(point)) {
+				setSelected(false);
+			}
+		}
+	}, lifetime());
+}
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_item_base.h
+++ b/ui/widgets/menu/menu_item_base.h
@ -0,0 +1,67 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/widgets/buttons.h"
+#include "ui/widgets/menu/menu.h"
+#include "ui/widgets/menu/menu_common.h"
+#include "styles/style_widgets.h"
+
+namespace Ui::Menu {
+
+class ItemBase : public RippleButton {
+public:
+	ItemBase(not_null<RpWidget*> parent, const style::Menu &st);
+
+	TriggeredSource lastTriggeredSource() const;
+
+	rpl::producer<CallbackData> selects() const;
+	void setSelected(
+		bool selected,
+		TriggeredSource source = TriggeredSource::Mouse);
+	bool isSelected() const;
+
+	int index() const;
+	void setIndex(int index);
+
+	void setClicked(TriggeredSource source = TriggeredSource::Mouse);
+
+	rpl::producer<CallbackData> clicks() const;
+
+	rpl::producer<int> minWidthValue() const;
+	int minWidth() const;
+	void setMinWidth(int w);
+
+	virtual void handleKeyPress(not_null<QKeyEvent*> e) {
+	}
+
+	virtual not_null<QAction*> action() const = 0;
+	virtual bool isEnabled() const = 0;
+
+	virtual void finishAnimating();
+
+protected:
+	void initResizeHook(rpl::producer<QSize> &&size);
+
+	void enableMouseSelecting();
+	void enableMouseSelecting(not_null<RpWidget*> widget);
+
+	virtual int contentHeight() const = 0;
+
+private:
+	int _index = -1;
+
+	rpl::variable<bool> _selected = false;
+	rpl::event_stream<> _clicks;
+
+	rpl::variable<int> _minWidth = 0;
+
+	TriggeredSource _lastTriggeredSource = TriggeredSource::Mouse;
+
+};
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_separator.cpp
+++ b/ui/widgets/menu/menu_separator.cpp
@ -0,0 +1,52 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/widgets/menu/menu_separator.h"
+
+#include "ui/painter.h"
+
+namespace Ui::Menu {
+
+Separator::Separator(
+	not_null<RpWidget*> parent,
+	const style::Menu &st,
+	not_null<QAction*> action)
+: ItemBase(parent, st)
+, _lineWidth(st.separatorWidth)
+, _padding(st.separatorPadding)
+, _fg(st.separatorFg)
+, _bg(st.itemBg)
+, _height(_padding.top() + _lineWidth + _padding.bottom())
+, _action(action) {
+
+	initResizeHook(parent->sizeValue());
+	paintRequest(
+	) | rpl::start_with_next([=] {
+		Painter p(this);
+
+		p.fillRect(0, 0, width(), _height, _bg);
+		p.fillRect(
+			_padding.left(),
+			_padding.top(),
+			width() - _padding.left() - _padding.right(),
+			_lineWidth,
+			_fg);
+	}, lifetime());
+}
+
+not_null<QAction*> Separator::action() const {
+	return _action;
+}
+
+bool Separator::isEnabled() const {
+	return false;
+}
+
+int Separator::contentHeight() const {
+	return _height;
+}
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_separator.h
+++ b/ui/widgets/menu/menu_separator.h
@ -0,0 +1,39 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/widgets/menu/menu_item_base.h"
+#include "styles/style_widgets.h"
+
+class Painter;
+
+namespace Ui::Menu {
+
+class Separator : public ItemBase {
+public:
+	Separator(
+		not_null<RpWidget*> parent,
+		const style::Menu &st,
+		not_null<QAction*> action);
+
+	not_null<QAction*> action() const override;
+	bool isEnabled() const override;
+
+protected:
+	int contentHeight() const override;
+
+private:
+	const int _lineWidth;
+	const style::margins &_padding;
+	const style::color &_fg;
+	const style::color &_bg;
+	const int _height;
+	const not_null<QAction*> _action;
+
+};
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_toggle.cpp
+++ b/ui/widgets/menu/menu_toggle.cpp
@ -0,0 +1,77 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/widgets/menu/menu_toggle.h"
+
+#include "ui/widgets/checkbox.h"
+
+namespace Ui::Menu {
+
+Toggle::Toggle(
+	not_null<RpWidget*> parent,
+	const style::Menu &st,
+	const QString &text,
+	Fn<void()> &&callback,
+	const style::icon *icon,
+	const style::icon *iconOver)
+: Action(
+	parent,
+	st,
+	CreateAction(parent, text, std::move(callback)),
+	icon,
+	iconOver)
+, _padding(st.itemPadding)
+, _toggleShift(st.itemToggleShift)
+, _itemToggle(st.itemToggle)
+, _itemToggleOver(st.itemToggleOver) {
+
+	const auto processAction = [=] {
+		if (!action()->isCheckable()) {
+			_toggle.reset();
+			return;
+		}
+		if (_toggle) {
+			_toggle->setChecked(action()->isChecked(), anim::type::normal);
+		} else {
+			_toggle = std::make_unique<ToggleView>(
+				st.itemToggle,
+				action()->isChecked(),
+				[=] { update(); });
+		}
+	};
+	processAction();
+	connect(action(), &QAction::changed, [=] { processAction(); });
+
+	selects(
+	) | rpl::start_with_next([=](const CallbackData &data) {
+		if (!_toggle) {
+			return;
+		}
+		_toggle->setStyle(data.selected ? _itemToggleOver : _itemToggle);
+	}, lifetime());
+
+}
+
+void Toggle::paintEvent(QPaintEvent *e) {
+	Action::paintEvent(e);
+	if (_toggle) {
+		Painter p(this);
+		const auto toggleSize = _toggle->getSize();
+		_toggle->paint(
+			p,
+			width() - _padding.right() - toggleSize.width() + _toggleShift,
+			(contentHeight() - toggleSize.height()) / 2, width());
+	}
+}
+
+void Toggle::finishAnimating() {
+	ItemBase::finishAnimating();
+	if (_toggle) {
+		_toggle->finishAnimating();
+	}
+}
+
+} // namespace Ui::Menu
--- a/ui/widgets/menu/menu_toggle.h
+++ b/ui/widgets/menu/menu_toggle.h
@ -0,0 +1,42 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/widgets/menu/menu_action.h"
+#include "styles/style_widgets.h"
+
+namespace Ui {
+class ToggleView;
+} // namespace Ui
+
+namespace Ui::Menu {
+
+class Toggle : public Action {
+public:
+	Toggle(
+		not_null<RpWidget*> parent,
+		const style::Menu &st,
+		const QString &text,
+		Fn<void()> &&callback,
+		const style::icon *icon,
+		const style::icon *iconOver);
+
+	void finishAnimating() override;
+
+protected:
+	void paintEvent(QPaintEvent *e) override;
+
+private:
+	const style::margins &_padding;
+	const int _toggleShift;
+	const style::Toggle &_itemToggle;
+	const style::Toggle &_itemToggleOver;
+	std::unique_ptr<ToggleView> _toggle;
+
+};
+
+} // namespace Ui::Menu
--- a/ui/widgets/popup_menu.cpp
+++ b/ui/widgets/popup_menu.cpp
@ -52,12 +52,15 @@ void PopupMenu::init() {
 		hideMenu(true);
 	}, lifetime());

-	_menu->setResizedCallback([this] { handleMenuResize(); });
-	_menu->setActivatedCallback([this](QAction *action, int actionTop, TriggeredSource source) {
-		handleActivated(action, actionTop, source);
+	_menu->resizesFromInner(
+	) | rpl::start_with_next([=] {
+		handleMenuResize();
+	}, _menu->lifetime());
+	_menu->setActivatedCallback([this](const Menu::CallbackData &data) {
+		handleActivated(data);
 	});
-	_menu->setTriggeredCallback([this](QAction *action, int actionTop, TriggeredSource source) {
-		handleTriggered(action, actionTop, source);
+	_menu->setTriggeredCallback([this](const Menu::CallbackData &data) {
+		handleTriggered(data);
 	});
 	_menu->setKeyPressDelegate([this](int key) { return handleKeyPress(key); });
 	_menu->setMouseMoveDelegate([this](QPoint globalPosition) { handleMouseMove(globalPosition); });
@ -88,8 +91,9 @@ void PopupMenu::handleMenuResize() {
 	_inner = rect().marginsRemoved(_padding);
 }

-not_null<QAction*> PopupMenu::addAction(const QString &text, const QObject *receiver, const char* member, const style::icon *icon, const style::icon *iconOver) {
-	return _menu->addAction(text, receiver, member, icon, iconOver);
+not_null<QAction*> PopupMenu::addAction(
+		base::unique_qptr<Menu::ItemBase> widget) {
+	return _menu->addAction(std::move(widget));
 }

 not_null<QAction*> PopupMenu::addAction(const QString &text, Fn<void()> callback, const style::icon *icon, const style::icon *iconOver) {
@ -119,6 +123,10 @@ const std::vector<not_null<QAction*>> &PopupMenu::actions() const {
 	return _menu->actions();
 }

+bool PopupMenu::empty() const {
+	return _menu->empty();
+}
+
 void PopupMenu::paintEvent(QPaintEvent *e) {
 	QPainter p(this);

@ -153,9 +161,9 @@ void PopupMenu::paintBg(QPainter &p) {
 	}
 }

-void PopupMenu::handleActivated(QAction *action, int actionTop, TriggeredSource source) {
-	if (source == TriggeredSource::Mouse) {
-		if (!popupSubmenuFromAction(action, actionTop, source)) {
+void PopupMenu::handleActivated(const Menu::CallbackData &data) {
+	if (data.source == TriggeredSource::Mouse) {
+		if (!popupSubmenuFromAction(data)) {
 			if (auto currentSubmenu = base::take(_activeSubmenu)) {
 				currentSubmenu->hideMenu(true);
 			}
@ -163,11 +171,11 @@ void PopupMenu::handleActivated(QAction *action, int actionTop, TriggeredSource
 	}
 }

-void PopupMenu::handleTriggered(QAction *action, int actionTop, TriggeredSource source) {
-	if (!popupSubmenuFromAction(action, actionTop, source)) {
+void PopupMenu::handleTriggered(const Menu::CallbackData &data) {
+	if (!popupSubmenuFromAction(data)) {
 		_triggering = true;
 		hideMenu();
-		emit action->trigger();
+		emit data.action->trigger();
 		_triggering = false;
 		if (_deleteLater) {
 			_deleteLater = false;
@ -176,12 +184,12 @@ void PopupMenu::handleTriggered(QAction *action, int actionTop, TriggeredSource
 	}
 }

-bool PopupMenu::popupSubmenuFromAction(QAction *action, int actionTop, TriggeredSource source) {
-	if (auto submenu = _submenus.value(action)) {
+bool PopupMenu::popupSubmenuFromAction(const Menu::CallbackData &data) {
+	if (auto submenu = _submenus.value(data.action)) {
 		if (_activeSubmenu == submenu) {
 			submenu->hideMenu(true);
 		} else {
-			popupSubmenu(submenu, actionTop, source);
+			popupSubmenu(submenu, data.actionTop, data.source);
 		}
 		return true;
 	}
@ -203,9 +211,9 @@ void PopupMenu::popupSubmenu(SubmenuPointer submenu, int actionTop, TriggeredSou
 	}
 }

-void PopupMenu::forwardKeyPress(int key) {
-	if (!handleKeyPress(key)) {
-		_menu->handleKeyPress(key);
+void PopupMenu::forwardKeyPress(not_null<QKeyEvent*> e) {
+	if (!handleKeyPress(e->key())) {
+		_menu->handleKeyPress(e);
 	}
 }

@ -262,7 +270,7 @@ void PopupMenu::hideEvent(QHideEvent *e) {
 }

 void PopupMenu::keyPressEvent(QKeyEvent *e) {
-	forwardKeyPress(e->key());
+	forwardKeyPress(e);
 }

 void PopupMenu::mouseMoveEvent(QMouseEvent *e) {
--- a/ui/widgets/popup_menu.h
+++ b/ui/widgets/popup_menu.h
@ -7,7 +7,7 @@
 #pragma once

 #include "styles/style_widgets.h"
-#include "ui/widgets/menu.h"
+#include "ui/widgets/menu/menu.h"
 #include "ui/effects/animations.h"
 #include "ui/effects/panel_animation.h"
 #include "ui/round_rect.h"
@ -21,13 +21,18 @@ public:
 	PopupMenu(QWidget *parent, const style::PopupMenu &st = st::defaultPopupMenu);
 	PopupMenu(QWidget *parent, QMenu *menu, const style::PopupMenu &st = st::defaultPopupMenu);

-	not_null<QAction*> addAction(const QString &text, const QObject *receiver, const char* member, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
+	[[nodiscard]] const style::PopupMenu &st() const {
+		return _st;
+	}
+
+	not_null<QAction*> addAction(base::unique_qptr<Menu::ItemBase> widget);
 	not_null<QAction*> addAction(const QString &text, Fn<void()> callback, const style::icon *icon = nullptr, const style::icon *iconOver = nullptr);
 	not_null<QAction*> addAction(const QString &text, std::unique_ptr<PopupMenu> submenu);
 	not_null<QAction*> addSeparator();
 	void clearActions();

 	const std::vector<not_null<QAction*>> &actions() const;
+	bool empty() const;

 	void deleteOnHide(bool del);
 	void popup(const QPoint &p);
@ -41,6 +46,10 @@ public:
 		_reactivateParent = false;
 	}

+	[[nodiscard]] not_null<Menu::Menu*> menu() const {
+		return _menu.data();
+	}
+
 	~PopupMenu();

 protected:
@ -75,9 +84,9 @@ private:
 	using TriggeredSource = Menu::TriggeredSource;
 	void handleCompositingUpdate();
 	void handleMenuResize();
-	void handleActivated(QAction *action, int actionTop, TriggeredSource source);
-	void handleTriggered(QAction *action, int actionTop, TriggeredSource source);
-	void forwardKeyPress(int key);
+	void handleActivated(const Menu::CallbackData &data);
+	void handleTriggered(const Menu::CallbackData &data);
+	void forwardKeyPress(not_null<QKeyEvent*> e);
 	bool handleKeyPress(int key);
 	void forwardMouseMove(QPoint globalPosition) {
 		_menu->handleMouseMove(globalPosition);
@ -93,14 +102,14 @@ private:
 	void handleMouseRelease(QPoint globalPosition);

 	using SubmenuPointer = QPointer<PopupMenu>;
-	bool popupSubmenuFromAction(QAction *action, int actionTop, TriggeredSource source);
+	bool popupSubmenuFromAction(const Menu::CallbackData &data);
 	void popupSubmenu(SubmenuPointer submenu, int actionTop, TriggeredSource source);
 	void showMenu(const QPoint &p, PopupMenu *parent, TriggeredSource source);

 	const style::PopupMenu &_st;

 	RoundRect _roundRect;
-	object_ptr<Menu> _menu;
+	object_ptr<Menu::Menu> _menu;

 	using Submenus = QMap<QAction*, SubmenuPointer>;
 	Submenus _submenus;
--- a/ui/widgets/widgets.style
+++ b/ui/widgets/widgets.style
@ -93,6 +93,7 @@ RoundButton {
 	textTop: pixels;

 	icon: icon;
+	iconOver: icon;
 	iconPosition: point;

 	font: font;
@ -135,6 +136,7 @@ Radio {
 	toggledFg: color;
 	diameter: pixels;
 	thickness: pixels;
+	outerSkip: pixels;
 	skip: pixels;
 	duration: int;
 	rippleAreaPadding: pixels;
@ -408,6 +410,18 @@ CrossLineAnimation {
 	stroke: pixels;
 }

+ArcsAnimation {
+	fg: color;
+	stroke: pixels;
+	space: pixels;
+	duration: int;
+	deltaAngle: int;
+	deltaHeight: pixels;
+	deltaWidth: pixels;
+	startHeight: pixels;
+	startWidth: pixels;
+}
+
 MultiSelectItem {
 	padding: margins;
 	maxWidth: pixels;
@ -741,7 +755,8 @@ defaultRadio: Radio {
 	toggledFg: windowBgActive;
 	diameter: 22px;
 	thickness: 2px;
-	skip: 65px; // * 0.1
+	outerSkip: 10px; // * 0.1
+	skip: 60px; // * 0.1
 	duration: 120;
 	rippleAreaPadding: 8px;
 }
@ -1569,3 +1584,17 @@ defaultWindowTitle: WindowTitle {

 windowShadow: icon {{ "window_shadow", windowShadowFg }};
 windowShadowShift: 1px;
+
+callRadius: 6px;
+callShadow: Shadow {
+	left: icon {{ "calls/call_shadow_left", windowShadowFg }};
+	topLeft: icon {{ "calls/call_shadow_top_left", windowShadowFg }};
+	top: icon {{ "calls/call_shadow_top", windowShadowFg }};
+	topRight: icon {{ "calls/call_shadow_top_left-flip_horizontal", windowShadowFg }};
+	right: icon {{ "calls/call_shadow_left-flip_horizontal", windowShadowFg }};
+	bottomRight: icon {{ "calls/call_shadow_top_left-flip_vertical-flip_horizontal", windowShadowFg }};
+	bottom: icon {{ "calls/call_shadow_top-flip_vertical", windowShadowFg }};
+	bottomLeft: icon {{ "calls/call_shadow_top_left-flip_vertical", windowShadowFg }};
+	extend: margins(9px, 8px, 9px, 10px);
+	fallback: windowShadowFgFallback;
+}