Add preference for terminal windows buffer size (bug #41474) * QTerminal.cc (notice_settings): call new function SetScrollBufferSize with the related value from the settings * QTerminal.h: new purely virtual function SetScrollBufferSize * QUnixTerminalImpl.cpp (initialize): corrections of coding style; (setScrollBufferSize): implementation of new function; * QUnixTerminalImpl.h: new function setScrollBufferSize; * QWinTerminalImpl.cpp (class QConsolePrivate): new function (QConsolePrivate::setScrollBufferSize): implementation of new function; (QWinTerminalImpl::setScrollBufferSize): implementation of new function; * QWinTerminalImpl.h: new function setScrollBufferSize; * settings-dialog.cc (constructor): init spinbox with buffer size from settings; (write_changed_settings): write value of spinbox into settings file * settings-dialog.ui: new spinbox for terminals buffer size (terminal tab)

--- a/libgui/src/settings-dialog.cc	Sun Mar 30 20:18:18 2014 -0400
+++ b/libgui/src/settings-dialog.cc	Thu Mar 06 03:56:59 2014 +0500
@@ -191,6 +191,8 @@
     settings->value ("terminal/fontName","Courier New").toString ()) );
   ui->terminal_fontSize->setValue (
     settings->value ("terminal/fontSize", 10).toInt ());
+  ui->terminal_history_buffer->setValue (
+     settings->value ("terminal/history_buffer",1000).toInt ());
 
   // file browser
   ui->showFileSize->setChecked (
@@ -626,6 +628,8 @@
                       ui->terminal_cursorUseForegroundColor->isChecked ());
   settings->setValue ("terminal/focus_after_command",
                       ui->terminal_focus_command->isChecked ());
+  settings->setValue ("terminal/history_buffer",
+                      ui->terminal_history_buffer->value() );
 
   // the cursor
   QString cursorType;