# HG changeset patch
# User Torsten <ttl@justmail.de>
# Date 1452194234 -3600
# Node ID e2fdbdd00ef9ffcb2fb2644853b7c65e574063ef
# Parent  10071454a4ba168319c8c15af884152d023922ca
center line when setting a breakpoint only if line is at top or at bottom

* file-editor-tab.cc (goto_line): use center_current_line with new argument;
  (center_current_line): new argument whether the line is always centered or
  only if the line is at the top or at the bottom of the editor window

* file-editor-tab.h: center_current_line with boolean parameter

diff --git a/libgui/src/m-editor/file-editor-tab.cc b/libgui/src/m-editor/file-editor-tab.cc
--- a/libgui/src/m-editor/file-editor-tab.cc
+++ b/libgui/src/m-editor/file-editor-tab.cc
@@ -1105,7 +1105,7 @@
   else  // go to given line without dialog
     _edit_area->setCursorPosition (line-1, 0);
 
-  center_current_line ();
+  center_current_line (false);  // only center line if at top or bottom
 }
 
 void
@@ -2326,7 +2326,7 @@
 
 
 void
-file_editor_tab::center_current_line ()
+file_editor_tab::center_current_line (bool always)
 {
   long int visible_lines
     = _edit_area->SendScintilla (QsciScintillaBase::SCI_LINESONSCREEN);
@@ -2337,9 +2337,12 @@
       _edit_area->getCursorPosition (&line, &index);
 
       int first_line = _edit_area->firstVisibleLine ();
-      first_line = first_line + (line - first_line - (visible_lines-1)/2);
 
-      _edit_area->SendScintilla (2613,first_line); // SCI_SETFIRSTVISIBLELINE
+      if (always || line == first_line || line > first_line + visible_lines - 2)
+        {
+          first_line = first_line + (line - first_line - (visible_lines-1)/2);
+          _edit_area->SendScintilla (2613,first_line); // SCI_SETFIRSTVISIBLELINE
+        }
     }
 }
 
diff --git a/libgui/src/m-editor/file-editor-tab.h b/libgui/src/m-editor/file-editor-tab.h
--- a/libgui/src/m-editor/file-editor-tab.h
+++ b/libgui/src/m-editor/file-editor-tab.h
@@ -240,7 +240,7 @@
   void add_breakpoint_callback (const bp_info& info);
   void remove_breakpoint_callback (const bp_info& info);
   void remove_all_breakpoints_callback (const bp_info& info);
-  void center_current_line ();
+  void center_current_line (bool always=true);
 
   void add_octave_apis (octave_value_list key_ovl);
   QString get_function_name ();