From 1e978e69cc3fdd3482091c770014646349812023 Mon Sep 17 00:00:00 2001
From: Mounir IDRASSI <mounir.idrassi@idrix.fr>
Date: Sun, 15 Dec 2019 22:08:05 +0100
Subject: MacOSX: Ensure that the heading bar is always visible when window is
 moved so that it can still be moved by user using mouse
 (https://github.com/veracrypt/VeraCrypt/issues/546)

---
 src/Main/Forms/MainFrame.cpp | 13 +++++++++++++
 src/Main/Forms/MainFrame.h   | 19 ++++++++++++++-----
 2 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/src/Main/Forms/MainFrame.cpp b/src/Main/Forms/MainFrame.cpp
index 8e0c401b..25853193 100644
--- a/src/Main/Forms/MainFrame.cpp
+++ b/src/Main/Forms/MainFrame.cpp
@@ -99,6 +99,9 @@ namespace VeraCrypt
 		Connect( wxID_ANY, wxEVT_COMMAND_PREF_UPDATED, wxCommandEventHandler( MainFrame::OnPreferencesUpdated ) );
 		Connect( wxID_ANY, wxEVT_COMMAND_OPEN_VOLUME_REQUEST, wxCommandEventHandler( MainFrame::OnOpenVolumeSystemRequest ) );
 
+#ifdef TC_MACOSX
+		Connect( wxID_ANY, wxEVT_MOVE, wxMoveEventHandler( MainFrame::OnMoveHandler ) );
+#endif
 	}
 
 	MainFrame::~MainFrame ()
@@ -119,6 +122,9 @@ namespace VeraCrypt
 		Disconnect( wxID_ANY, wxEVT_COMMAND_UPDATE_VOLUME_LIST, wxCommandEventHandler( MainFrame::OnUpdateVolumeList ) );
 		Disconnect( wxID_ANY, wxEVT_COMMAND_PREF_UPDATED, wxCommandEventHandler( MainFrame::OnPreferencesUpdated ) );
 		Disconnect( wxID_ANY, wxEVT_COMMAND_OPEN_VOLUME_REQUEST, wxCommandEventHandler( MainFrame::OnOpenVolumeSystemRequest ) );
+#ifdef TC_MACOSX
+		Disconnect( wxID_ANY, wxEVT_MOVE, wxMoveEventHandler( MainFrame::OnMoveHandler ) );
+#endif
 		Core->VolumeMountedEvent.Disconnect (this);
 		Core->VolumeDismountedEvent.Disconnect (this);
 		Gui->OpenVolumeSystemRequestEvent.Disconnect (this);
@@ -1723,4 +1729,11 @@ namespace VeraCrypt
 		Core->WipePasswordCache();
 		UpdateWipeCacheButton();
 	}
+	
+#ifdef TC_MACOSX
+	void MainFrame::OnMoveHandler(wxMoveEvent& event)
+	{
+		EnsureVisible (true);
+	}
+#endif
 }
diff --git a/src/Main/Forms/MainFrame.h b/src/Main/Forms/MainFrame.h
index b8991b73..d481daf5 100644
--- a/src/Main/Forms/MainFrame.h
+++ b/src/Main/Forms/MainFrame.h
@@ -162,8 +162,12 @@ namespace VeraCrypt
 		void UpdateVolumeList ();
 		void UpdateWipeCacheButton ();
 		void WipeCache ();
-        
-        void EnsureVisible()
+
+#ifdef TC_MACOSX
+		void OnMoveHandler(wxMoveEvent& event);
+#endif
+
+        void EnsureVisible(bool bOnlyHeadingBar = false)
         {
         	wxDisplay display (this);
         	wxRect displayRect = display.GetClientArea();
@@ -171,14 +175,19 @@ namespace VeraCrypt
         	bool bMove = false;
         	wxPoint p = GetScreenPosition();
         	wxRect r = GetRect ();
-        	if (p.x < displayRect.x)
+        	wxRect rc = GetClientRect ();
+        	int titleBarHeight = r.height - rc.height; 	
+        	
+        	if (!bOnlyHeadingBar && (p.x < displayRect.x))
         		p.x = 0, bMove = true;
         	if (p.y < displayRect.y)
         		p.y = displayRect.y, bMove = true;
-        	if (p.x + r.width > displayRect.x + displayRect.width)
+        	if (!bOnlyHeadingBar && (p.x + r.width > displayRect.x + displayRect.width))
         		p.x = displayRect.x + displayRect.width - r.width, bMove = true;
-        	if (p.y + r.height > displayRect.y + displayRect.height)
+        	if (!bOnlyHeadingBar && (p.y + r.height > displayRect.y + displayRect.height))
         		p.y = displayRect.y + displayRect.height - r.height, bMove = true;
+        	if (bOnlyHeadingBar && (p.y > (displayRect.y + displayRect.height - titleBarHeight)))
+        		p.y = displayRect.y + displayRect.height - titleBarHeight, bMove = true;
         	if (bMove)
         		Move (p);
         }
-- 
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