From 2b9e7a6b2568c2265be17289d29f246c406f0c4c Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Wed, 29 May 2024 12:06:30 +0400
Subject: [PATCH] Show preview on Force-Click on macOS.

---
 .../dialogs/dialogs_inner_widget.cpp          | 25 ++++++++++++++++---
 .../dialogs/dialogs_inner_widget.h            |  2 ++
 .../platform/mac/main_window_mac.h            |  6 +++++
 .../platform/mac/main_window_mac.mm           | 10 ++++++++
 Telegram/SourceFiles/window/main_window.h     |  4 +++
 5 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
index e21dcbcf4..3b996f385 100644
--- a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
+++ b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
@@ -332,6 +332,11 @@ InnerWidget::InnerWidget(
 		switchToFilter(filterId);
 	}, lifetime());
 
+	_controller->window().widget()->globalForceClicks(
+	) | rpl::start_with_next([=](QPoint globalPosition) {
+		processGlobalForceClick(globalPosition);
+	}, lifetime());
+
 	session().data().stories().incrementPreloadingMainSources();
 
 	handleChatListEntryRefreshes();
@@ -1424,6 +1429,16 @@ void InnerWidget::selectByMouse(QPoint globalPosition) {
 	}
 }
 
+void InnerWidget::processGlobalForceClick(QPoint globalPosition) {
+	const auto parent = parentWidget();
+	if (_pressButton == Qt::LeftButton
+		&& parent->rect().contains(parent->mapFromGlobal(globalPosition))
+		&& pressShowsPreview(false)) {
+		_chatPreviewWillBeFor = computeChosenRow().key;
+		showChatPreview(false);
+	}
+}
+
 void InnerWidget::mousePressEvent(QMouseEvent *e) {
 	selectByMouse(e->globalPos());
 
@@ -1761,6 +1776,7 @@ void InnerWidget::mousePressReleased(
 		Qt::MouseButton button,
 		Qt::KeyboardModifiers modifiers) {
 	_chatPreviewTimer.cancel();
+	_pressButton = Qt::NoButton;
 
 	auto wasDragging = (_dragging != nullptr);
 	if (wasDragging) {
@@ -3598,8 +3614,11 @@ ChosenRow InnerWidget::computeChosenRow() const {
 
 bool InnerWidget::isUserpicPress() const {
 	return  (_lastRowLocalMouseX >= 0)
-		&& (_lastRowLocalMouseX < _st->nameLeft)
-		&& (width() > _narrowWidth);
+		&& (_lastRowLocalMouseX < _st->nameLeft);
+}
+
+bool InnerWidget::isUserpicPressOnWide() const {
+	return isUserpicPress() && (width() > _narrowWidth);
 }
 
 bool InnerWidget::pressShowsPreview(bool onlyUserpic) const {
@@ -3625,7 +3644,7 @@ bool InnerWidget::chooseRow(
 			ChosenRow row,
 			Qt::KeyboardModifiers modifiers) {
 		row.newWindow = (modifiers & Qt::ControlModifier);
-		row.userpicClick = isUserpicPress();
+		row.userpicClick = isUserpicPressOnWide();
 		return row;
 	};
 	auto chosen = modifyChosenRow(computeChosenRow(), modifiers);
diff --git a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h
index fe9a3d926..9194df36e 100644
--- a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h
+++ b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h
@@ -123,6 +123,7 @@ public:
 	void resizeEmptyLabel();
 
 	[[nodiscard]] bool isUserpicPress() const;
+	[[nodiscard]] bool isUserpicPressOnWide() const;
 	[[nodiscard]] bool pressShowsPreview(bool onlyUserpic) const;
 	void cancelChatPreview();
 	void showChatPreview(bool onlyUserpic);
@@ -258,6 +259,7 @@ private:
 		QPoint globalPosition,
 		Qt::MouseButton button,
 		Qt::KeyboardModifiers modifiers);
+	void processGlobalForceClick(QPoint globalPosition);
 	void clearIrrelevantState();
 	void selectByMouse(QPoint globalPosition);
 	void preloadRowsData();
diff --git a/Telegram/SourceFiles/platform/mac/main_window_mac.h b/Telegram/SourceFiles/platform/mac/main_window_mac.h
index 6c2d15d07..2a3a59b9c 100644
--- a/Telegram/SourceFiles/platform/mac/main_window_mac.h
+++ b/Telegram/SourceFiles/platform/mac/main_window_mac.h
@@ -28,6 +28,10 @@ public:
 
 	void updateWindowIcon() override;
 
+	rpl::producer<QPoint> globalForceClicks() override {
+		return _forceClicks.events();
+	}
+
 	class Private;
 
 protected:
@@ -85,7 +89,9 @@ private:
 	QAction *psMonospace = nullptr;
 	QAction *psClearFormat = nullptr;
 
+	rpl::event_stream<QPoint> _forceClicks;
 	int _customTitleHeight = 0;
+	int _lastPressureStage = 0;
 
 };
 
diff --git a/Telegram/SourceFiles/platform/mac/main_window_mac.mm b/Telegram/SourceFiles/platform/mac/main_window_mac.mm
index 0b2adb9aa..9b0dd14bb 100644
--- a/Telegram/SourceFiles/platform/mac/main_window_mac.mm
+++ b/Telegram/SourceFiles/platform/mac/main_window_mac.mm
@@ -310,6 +310,16 @@ bool MainWindow::nativeEvent(
 			Core::Sandbox::Instance().customEnterFromEventLoop([&] {
 				imeCompositionStartReceived();
 			});
+		} else if ([event type] == NSEventTypePressure) {
+			const auto stage = [event stage];
+			if (_lastPressureStage != stage) {
+				_lastPressureStage = stage;
+				if (stage == 2) {
+					Core::Sandbox::Instance().customEnterFromEventLoop([&] {
+						_forceClicks.fire(QCursor::pos());
+					});
+				}
+			}
 		}
 	}
 	return false;
diff --git a/Telegram/SourceFiles/window/main_window.h b/Telegram/SourceFiles/window/main_window.h
index 79dc3c6fe..67f38567c 100644
--- a/Telegram/SourceFiles/window/main_window.h
+++ b/Telegram/SourceFiles/window/main_window.h
@@ -144,6 +144,10 @@ public:
 		Core::WindowPosition initial,
 		QSize minSize) const;
 
+	[[nodiscard]] virtual rpl::producer<QPoint> globalForceClicks() {
+		return rpl::never<QPoint>();
+	}
+
 protected:
 	void leaveEventHook(QEvent *e) override;