+///////////////////////////////////////////////////////////////////////////////
+// Name: src/gtk/mnemonics.cpp
+// Purpose: implementation of GTK mnemonics conversion functions
+// Author: Vadim Zeitlin
+// Created: 2007-11-12
+// RCS-ID: $Id$
+// Copyright: (c) 2007 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence: wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#include "wx/private/stattext.h" // for wxMarkupEntities
+
+#include "wx/gtk/private/mnemonics.h"
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// internal helper: apply the operation indicated by flag
+// ----------------------------------------------------------------------------
+
+enum MnemonicsFlag
+{
+ MNEMONICS_REMOVE,
+ MNEMONICS_CONVERT,
+ MNEMONICS_CONVERT_MARKUP
+};
+
+static wxString GTKProcessMnemonics(const wxString& label, MnemonicsFlag flag)
+{
+ wxString labelGTK;
+ labelGTK.reserve(label.length());
+ for ( wxString::const_iterator i = label.begin(); i != label.end(); ++i )
+ {
+ wxChar ch = *i;
+
+ switch ( ch )
+ {
+ case wxT('&'):
+ if ( i + 1 == label.end() )
+ {
+ // "&" at the end of string is an error
+ wxLogDebug(wxT("Invalid label \"%s\"."), label);
+ break;
+ }
+
+ if ( flag == MNEMONICS_CONVERT_MARKUP )
+ {
+ bool isMnemonic = true;
+ size_t distanceFromEnd = label.end() - i;
+
+ // is this ampersand introducing a mnemonic or rather an entity?
+ for (size_t j=0; j < wxMARKUP_ENTITY_MAX; j++)
+ {
+ const wxChar *entity = wxMarkupEntities[wxMARKUP_ELEMENT_NAME][j];
+ size_t entityLen = wxStrlen(entity);
+
+ if (distanceFromEnd >= entityLen &&
+ wxString(i, i + entityLen) == entity)
+ {
+ labelGTK << entity;
+ i += entityLen - 1; // the -1 is because main for()
+ // loop already increments i
+ isMnemonic = false;
+
+ break;
+ }
+ }
+
+ if (!isMnemonic)
+ continue;
+ }
+
+ ch = *(++i); // skip '&' itself
+ switch ( ch )
+ {
+ case wxT('&'):
+ // special case: "&&" is not a mnemonic at all but just
+ // an escaped "&"
+ if ( flag == MNEMONICS_CONVERT_MARKUP )
+ labelGTK += wxT("&");
+ else
+ labelGTK += wxT('&');
+ break;
+
+ case wxT('_'):
+ if ( flag != MNEMONICS_REMOVE )
+ {
+ // '_' can't be a GTK mnemonic apparently so
+ // replace it with something similar
+ labelGTK += wxT("_-");
+ break;
+ }
+ //else: fall through
+
+ default:
+ if ( flag != MNEMONICS_REMOVE )
+ labelGTK += wxT('_');
+ labelGTK += ch;
+ }
+ break;
+
+ case wxT('_'):
+ if ( flag != MNEMONICS_REMOVE )
+ {
+ // escape any existing underlines in the string so that
+ // they don't become mnemonics accidentally
+ labelGTK += wxT("__");
+ break;
+ }
+ //else: fall through
+
+ default:
+ labelGTK += ch;
+ }
+ }
+
+ return labelGTK;
+}
+
+// ----------------------------------------------------------------------------
+// public functions
+// ----------------------------------------------------------------------------
+
+wxString wxGTKRemoveMnemonics(const wxString& label)
+{
+ return GTKProcessMnemonics(label, MNEMONICS_REMOVE);
+}
+
+wxString wxConvertMnemonicsToGTK(const wxString& label)
+{
+ return GTKProcessMnemonics(label, MNEMONICS_CONVERT);
+}
+
+wxString wxConvertMnemonicsToGTKMarkup(const wxString& label)
+{
+ return GTKProcessMnemonics(label, MNEMONICS_CONVERT_MARKUP);
+}
+
+wxString wxConvertMnemonicsFromGTK(const wxString& gtkLabel)
+{
+ wxString label;
+ for ( const wxChar *pc = gtkLabel.c_str(); *pc; pc++ )
+ {
+ // '_' is the escape character for GTK+.
+
+ if ( *pc == wxT('_') && *(pc+1) == wxT('_'))
+ {
+ // An underscore was escaped.
+ label += wxT('_');
+ pc++;
+ }
+ else if ( *pc == wxT('_') )
+ {
+ // Convert GTK+ hotkey symbol to wxWidgets/Windows standard
+ label += wxT('&');
+ }
+ else if ( *pc == wxT('&') )
+ {
+ // Double the ampersand to escape it as far as wxWidgets is concerned
+ label += wxT("&&");
+ }
+ else
+ {
+ // don't remove ampersands '&' since if we have them in the menu title
+ // it means that they were doubled to indicate "&" instead of accelerator
+ label += *pc;
+ }
+ }
+
+ return label;
+}
+
projects / wxWidgets.git / commitdiff
