Allow opening popup menu shifted to the cursor.

ui/widgets/menu/menu_action.cpp

@@ -113,7 +113,8 @@ void Action::paint(Painter &p) {
 	p.setPen(selected ? _st.itemFgOver : (enabled ? _st.itemFg : _st.itemFgDisabled));
 	paintText(p);
 	if (hasSubmenu()) {
-		const auto left = width() - _st.itemPadding.right() - _st.arrow.width();
+		const auto skip = _st.itemRightSkip;
+		const auto left = width() - skip - _st.arrow.width();
 		const auto top = (_height - _st.arrow.height()) / 2;
 		if (enabled) {
 			_st.arrow.paint(p, left, top, width());
@@ -159,14 +160,14 @@ void Action::processAction() {
 	const auto &padding = _st.itemPadding;
 
 	const auto additionalWidth = hasSubmenu()
-		? padding.right() + _st.arrow.width()
+		? (_st.itemRightSkip + _st.arrow.width())
 		: (!actionShortcut.isEmpty())
-		? (padding.right() + _st.itemStyle.font->width(actionShortcut))
+		? (_st.itemRightSkip + _st.itemStyle.font->width(actionShortcut))
 		: 0;
 	const auto goodWidth = padding.left()
 		+ textWidth
-		+ padding.right()
-		+ additionalWidth;
+		+ additionalWidth
+		+ padding.right();
 
 	const auto w = std::clamp(goodWidth, _st.widthMin, _st.widthMax);
 	_textWidth = w - (goodWidth - textWidth);

ui/widgets/menu/menu_add_action_callback.h

@@ -22,6 +22,7 @@ public:
 		Fn<void()> handler;
 		const style::icon *icon;
 		Fn<void(not_null<Ui::PopupMenu*>)> fillSubmenu;
+		int addTopShift = 0;
 		bool isSeparator = false;
 		bool isAttention = false;
 	};

ui/widgets/menu/menu_add_action_callback_factory.cpp

@@ -15,8 +15,11 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 namespace Ui::Menu {
 
 MenuCallback CreateAddActionCallback(not_null<Ui::PopupMenu*> menu) {
-	return MenuCallback([=](MenuCallback::Args a) {
-		if (a.fillSubmenu) {
+	return MenuCallback([=](MenuCallback::Args a) -> QAction* {
+		if (a.addTopShift) {
+			menu->setTopShift(a.addTopShift);
+			return nullptr;
+		} else if (a.fillSubmenu) {
 			const auto action = menu->addAction(
 				a.text,
 				std::move(a.handler),

ui/widgets/popup_menu.cpp

@@ -440,6 +440,10 @@ void PopupMenu::clearActions() {
 	return _menu->clearActions();
 }
 
+void PopupMenu::setTopShift(int topShift) {
+	_topShift = topShift;
+}
+
 void PopupMenu::setForceWidth(int forceWidth) {
 	_menu->setForceWidth(forceWidth);
 }
@@ -993,7 +997,7 @@ bool PopupMenu::prepareGeometryFor(const QPoint &p, PopupMenu *parent) {
 		std::max(
 			_additionalMenuPadding.left() - _st.shadow.extend.left(),
 			0),
-		_padding.top());
+		_padding.top() - _topShift);
 	auto r = screen ? screen->availableGeometry() : QRect();
 	const auto parentWidth = _parent ? _parent->inner().width() : 0;
 	if (style::RightToLeft()) {

ui/widgets/popup_menu.h

@@ -82,6 +82,7 @@ public:
 	bool prepareGeometryFor(const QPoint &p);
 	void popupPrepared();
 	void hideMenu(bool fast = false);
+	void setTopShift(int topShift);
 	void setForceWidth(int forceWidth);
 	void setForcedOrigin(PanelAnimation::Origin origin);
 	void setForcedVerticalOrigin(VerticalOrigin origin);
@@ -218,6 +219,7 @@ private:
 	bool _reactivateParent = true;
 	bool _grabbingForPanelAnimation = false;
 
+	int _topShift = 0;
 	bool _clearLastSeparator = true;
 
 	Fn<void()> _destroyedCallback;

ui/widgets/widgets.style

@@ -230,6 +230,7 @@ Menu {
 	itemFgShortcutOver: color;
 	itemFgShortcutDisabled: color;
 	itemPadding: margins;
+	itemRightSkip: pixels;
 	itemIconPosition: point;
 	itemStyle: TextStyle;
 	itemToggle: Toggle;
@@ -823,6 +824,7 @@ defaultMenu: Menu {
 	itemFgShortcutDisabled: menuFgDisabled;
 	itemIconPosition: point(0px, 0px);
 	itemPadding: margins(17px, 8px, 17px, 7px);
+	itemRightSkip: 6px;
 	itemStyle: defaultTextStyle;
 	itemToggle: defaultMenuToggle;
 	itemToggleOver: defaultMenuToggleOver;