Add elastic overscroll to swipe-to-reply.

Telegram/SourceFiles/boxes/peers/peer_short_info_box.cpp

@@ -671,6 +671,8 @@ PeerShortInfoBox::PeerShortInfoBox(
 	) | rpl::start_with_next([=] {
 		_cover.setScrollTop(_scroll->scrollTop());
 	}, _cover.lifetime());
+
+	setCustomCornersFilling(RectPart::FullTop);
 }
 
 PeerShortInfoBox::~PeerShortInfoBox() = default;
@@ -795,10 +797,6 @@ void PeerShortInfoBox::prepareRows() {
 		tr::lng_mediaview_copy(tr::now));
 }
 
-RectParts PeerShortInfoBox::customCornersFilling() {
-	return RectPart::FullTop;
-}
-
 void PeerShortInfoBox::resizeEvent(QResizeEvent *e) {
 	BoxContent::resizeEvent(e);
 

Telegram/SourceFiles/boxes/peers/peer_short_info_box.h

@@ -162,7 +162,6 @@ public:
 private:
 	void prepare() override;
 	void prepareRows();
-	RectParts customCornersFilling() override;
 
 	void resizeEvent(QResizeEvent *e) override;
 

Telegram/SourceFiles/history/history_view_swipe.cpp

@@ -20,6 +20,11 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <QtWidgets/QApplication>
 
 namespace HistoryView {
+namespace {
+
+constexpr auto kSwipeSlow = 0.2;
+
+} // namespace
 
 void SetupSwipeHandler(
 		not_null<Ui::RpWidget*> widget,
@@ -63,10 +68,16 @@ void SetupSwipeHandler(
 	}, state->lifetime);
 
 	const auto updateRatio = [=](float64 ratio) {
-		state->data.ratio = std::clamp(ratio, 0., kMaxRatio),
+		ratio = std::max(ratio, 0.);
+		state->data.ratio = ratio;
+		const auto overscrollRatio = std::max(ratio - 1., 0.);
+		const auto translation = int(
+			base::SafeRound(-std::min(ratio, 1.) * threshold)
+		) + Ui::OverscrollFromAccumulated(int(
+			base::SafeRound(-overscrollRatio * threshold)
+		));
 		state->data.msgBareId = state->finishByTopData.msgBareId;
-		state->data.translation = int(
-			base::SafeRound(-std::clamp(ratio, 0., kMaxRatio) * threshold));
+		state->data.translation = translation;
 		state->data.cursorTop = state->cursorTop;
 		update(state->data);
 	};
@@ -248,10 +259,11 @@ void SetupSwipeHandler(
 				processEnd();
 			} else {
 				const auto invert = (w->inverted() ? -1 : 1);
+				const auto delta = Ui::ScrollDeltaF(w) * invert;
 				updateWith({
 					.globalCursor = w->globalPosition().toPoint(),
 					.position = QPointF(),
-					.delta = state->delta + Ui::ScrollDelta(w) * invert,
+					.delta = state->delta + delta * kSwipeSlow,
 					.touch = false,
 				});
 			}

Telegram/SourceFiles/history/view/history_view_message.cpp

@@ -1512,10 +1512,12 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 			+ ((g.height() < size * kMaxHeightRatio)
 				? rightActionSize().value_or(QSize()).width()
 				: 0);
+		const auto shift = std::min(
+			(size * kShiftRatio * context.gestureHorizontal.ratio),
+			-1. * context.gestureHorizontal.translation
+		) + (st::historySwipeIconSkip * ratio * (isLeftSize ? .7 : 1.));
 		const auto rect = QRectF(
-			outerWidth
-				- (size * kShiftRatio * context.gestureHorizontal.ratio)
-				- (st::historySwipeIconSkip * ratio * (isLeftSize ? .7 : 1.)),
+			outerWidth - shift,
 			g.y() + (g.height() - size) / 2,
 			size,
 			size);

Telegram/lib_ui

@@ -1 +1 @@
-Subproject commit 9965046aac159fab07bbe99d27692d76d1b86312
+Subproject commit 9ca74272a0ec33bac83c5b61a73d523902eb96cd