Added highlight filter button from filters container on dialog drag.

Telegram/SourceFiles/boxes/choose_filter_box.cpp

@@ -505,7 +505,8 @@ void SetupFilterDragAndDrop(
 		not_null<Ui::RpWidget*> outer,
 		not_null<Main::Session*> session,
 		Fn<std::optional<FilterId>(QPoint)> filterIdAtPosition,
-		Fn<FilterId()> activeFilterId) {
+		Fn<FilterId()> activeFilterId,
+		Fn<void(FilterId)> selectByFilterId) {
 	const auto hasAction = [=](not_null<QDropEvent*> drop, bool perform) {
 		const auto mimeData = drop->mimeData();
 		const auto filterId = filterIdAtPosition(
@@ -522,6 +523,7 @@ void SetupFilterDragAndDrop(
 						if (perform) {
 							v.add(id);
 						}
+						selectByFilterId(perform ? FilterId(-1) : id);
 						return true;
 					}
 				}
@@ -531,10 +533,12 @@ void SetupFilterDragAndDrop(
 					if (perform) {
 						v.remove(active);
 					}
+					selectByFilterId(perform ? FilterId(-1) : active);
 					return true;
 				}
 			}
 		}
+		selectByFilterId(-1);
 		return false;
 	};
 	outer->setAcceptDrops(true);
@@ -560,6 +564,7 @@ void SetupFilterDragAndDrop(
 				dm->ignore();
 			}
 		} else if (e->type() == QEvent::DragLeave) {
+			selectByFilterId(-1);
 		} else if (e->type() == QEvent::Drop) {
 			const auto drop = static_cast<QDropEvent*>(e.get());
 			if (hasAction(drop, true)) {

Telegram/SourceFiles/boxes/choose_filter_box.h

@@ -62,7 +62,8 @@ void SetupFilterDragAndDrop(
 	not_null<Ui::RpWidget*> outer,
 	not_null<Main::Session*> session,
 	Fn<std::optional<FilterId>(QPoint)> filterIdAtPosition,
-	Fn<FilterId()> activeFilterId);
+	Fn<FilterId()> activeFilterId,
+	Fn<void(FilterId)> selectByFilterId);
 
 [[nodiscard]] History *HistoryFromMimeData(
 	const QMimeData *mime,

Telegram/SourceFiles/ui/widgets/chat_filters_tabs_strip.cpp

@@ -310,7 +310,8 @@ not_null<Ui::RpWidget*> AddChatFiltersTabsStrip(
 						? slider->lookupSectionLeft(i + 1)
 						: slider->width();
 					if (x >= left && x < right) {
-						const auto &list = session->data().chatsFilters().list();
+						const auto &list
+							= session->data().chatsFilters().list();
 						return (i < list.size())
 							? list[i].id()
 							: FilterId();
@@ -318,7 +319,17 @@ not_null<Ui::RpWidget*> AddChatFiltersTabsStrip(
 				}
 				return std::nullopt;
 			},
-			[=] { return state->lastFilterId.value_or(FilterId()); });
+			[=] { return state->lastFilterId.value_or(FilterId()); },
+			[=](FilterId id) {
+				const auto &list = session->data().chatsFilters().list();
+				for (auto i = 0; i < list.size(); i++) {
+					if (list[i].id() == id) {
+						slider->selectSection(i);
+						return;
+					}
+				}
+				slider->selectSection(-1);
+			});
 	}
 	wrap->toggle(false, anim::type::instant);
 	scroll->setCustomWheelProcess([=](not_null<QWheelEvent*> e) {

Telegram/SourceFiles/ui/widgets/discrete_sliders.cpp

@@ -58,6 +58,27 @@ void DiscreteSlider::finishAnimating() {
 	}
 }
 
+void DiscreteSlider::selectSection(int index) {
+	if (index < 0 || index >= _sections.size()) {
+		for (auto &other : _sections) {
+			if (other.ripple) {
+				other.ripple->lastStop();
+			}
+		}
+		return;
+	}
+	auto &section = _sections[index];
+	if (section.ripple && !section.ripple->empty()) {
+		return;
+	}
+	for (auto &other : _sections) {
+		if (other.ripple) {
+			other.ripple->lastStop();
+		}
+	}
+	startRipple(index);
+}
+
 void DiscreteSlider::setAdditionalContentWidthToSection(int index, int w) {
 	if (index >= 0 && index < _sections.size()) {
 		auto &section = _sections[index];

Telegram/SourceFiles/ui/widgets/discrete_sliders.h

@@ -45,6 +45,7 @@ public:
 	void setActiveSection(int index);
 	void setActiveSectionFast(int index);
 	void finishAnimating();
+	void selectSection(int index);
 
 	void setAdditionalContentWidthToSection(int index, int width);
 

Telegram/SourceFiles/window/window_filters_menu.cpp

@@ -145,7 +145,12 @@ void FiltersMenu::setupDragAndDrop() {
 			}
 			return std::nullopt;
 		},
-		[=] { return _activeFilterId; });
+		[=] { return _activeFilterId; },
+		[=](FilterId filterId) {
+			for (const auto &[id, button] : _filters) {
+				button->setForceRippled(id == filterId);
+			}
+		});
 }
 
 void FiltersMenu::setupMainMenuIcon() {