Optimize SIGWINCH Shell notification

Fixes issue with missed SIGWINCH shell notification in case the
Terminal frame was resized by using any of "Settings"->"Window size"
menu items.

Fixes #9293 - original problem was pointed out by Ziusudra. Thank you!

src/apps/terminal/TermView.cpp

@@ -551,7 +551,7 @@ TermView::Columns() const
 
 //! Set number of rows and columns in terminal
 BRect
-TermView::SetTermSize(int rows, int columns)
+TermView::SetTermSize(int rows, int columns, bool notifyShell)
 {
 //debug_printf("TermView::SetTermSize(%d, %d)\n", rows, columns);
 	if (rows > 0)
@@ -591,6 +591,9 @@ TermView::SetTermSize(int rows, int columns)
 			offset + rows + 2);
 	}
 
+	if (notifyShell)
+		fFrameResized = true;
+
 	return rect;
 }
 
@@ -602,7 +605,7 @@ TermView::SetTermSize(BRect rect)
 	int columns;
 
 	GetTermSizeFromRect(rect, &rows, &columns);
-	SetTermSize(rows, columns);
+	SetTermSize(rows, columns, false);
 }
 
 
@@ -1575,9 +1578,7 @@ TermView::FrameResized(float width, float height)
 	if (fResizeViewDisableCount > 0)
 		fResizeViewDisableCount--;
 
-	SetTermSize(rows, columns);
+	SetTermSize(rows, columns, true);
-
-	fFrameResized = true;
 }
 
 

src/apps/terminal/TermView.h

@@ -72,7 +72,8 @@ public:
 			void				GetFontSize(int* width, int* height);
 			int					Rows() const;
 			int					Columns() const;
-			BRect				SetTermSize(int rows, int cols);
+			BRect				SetTermSize(int rows, int cols,
+									bool notifyShell);
 			void				SetTermSize(BRect rect);
 			void				GetTermSizeFromRect(const BRect &rect,
 									int *rows, int *columns);

src/apps/terminal/TermWindow.cpp

@@ -817,7 +817,7 @@ TermWindow::MessageReceived(BMessage *message)
 
 			for (int32 i = 0; i < fTabView->CountTabs(); i++) {
 				TermView* view = _TermViewAt(i);
-				view->SetTermSize(rows, columns);
+				view->SetTermSize(rows, columns, true);
 				_ResizeView(view);
 			}
 			break;