include/wx/gtk/private.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk/private.h
   3 // Purpose:     wxGTK private macros, functions &c
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     12.03.02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2002 Vadim Zeitlin <vadim@wxwidgets.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GTK_PRIVATE_H_
  13 #define _WX_GTK_PRIVATE_H_
  14
  15 #include <gtk/gtk.h>
  16
  17 #include "wx/gtk/private/string.h"
  18 #include "wx/gtk/private/gtk2-compat.h"
  19
  20 // pango_version_check symbol is quite recent ATM (4/2007)... so we
  21 // use our own wrapper which implements a smart trick.
  22 // Use this function as you'd use pango_version_check:
  23 //
  24 //  if (!wx_pango_version_check(1,18,0))
  25 //     ... call to a function available only in pango >= 1.18 ...
  26 //
  27 // and use it only to test for pango versions >= 1.16.0
  28 extern const gchar *wx_pango_version_check(int major, int minor, int micro);
  29
  30 #if wxUSE_UNICODE
  31     #define wxGTK_CONV(s) s.utf8_str()
  32     #define wxGTK_CONV_ENC(s, enc) wxGTK_CONV((s))
  33     #define wxGTK_CONV_FONT(s, font) wxGTK_CONV((s))
  34     #define wxGTK_CONV_SYS(s) wxGTK_CONV((s))
  35
  36     #define wxGTK_CONV_BACK(s) wxString::FromUTF8Unchecked(s)
  37     #define wxGTK_CONV_BACK_ENC(s, enc) wxGTK_CONV_BACK(s)
  38     #define wxGTK_CONV_BACK_FONT(s, font) wxGTK_CONV_BACK(s)
  39     #define wxGTK_CONV_BACK_SYS(s) wxGTK_CONV_BACK(s)
  40 #else
  41     #include "wx/font.h"
  42
  43     // convert the text between the given encoding and UTF-8 used by wxGTK
  44     extern WXDLLIMPEXP_CORE wxCharBuffer
  45     wxConvertToGTK(const wxString& s,
  46                    wxFontEncoding enc = wxFONTENCODING_SYSTEM);
  47
  48     extern WXDLLIMPEXP_CORE wxCharBuffer
  49     wxConvertFromGTK(const wxString& s,
  50                      wxFontEncoding enc = wxFONTENCODING_SYSTEM);
  51
  52     // helper: use the encoding of the given font if it's valid
  53     inline wxCharBuffer wxConvertToGTK(const wxString& s, const wxFont& font)
  54     {
  55         return wxConvertToGTK(s, font.IsOk() ? font.GetEncoding()
  56                                            : wxFONTENCODING_SYSTEM);
  57     }
  58
  59     inline wxCharBuffer wxConvertFromGTK(const wxString& s, const wxFont& font)
  60     {
  61         return wxConvertFromGTK(s, font.IsOk() ? font.GetEncoding()
  62                                              : wxFONTENCODING_SYSTEM);
  63     }
  64
  65     // more helpers: allow passing GTK+ strings directly
  66     inline wxCharBuffer
  67     wxConvertFromGTK(const wxGtkString& gs,
  68                      wxFontEncoding enc = wxFONTENCODING_SYSTEM)
  69     {
  70         return wxConvertFromGTK(gs.c_str(), enc);
  71     }
  72
  73     inline wxCharBuffer
  74     wxConvertFromGTK(const wxGtkString& gs, const wxFont& font)
  75     {
  76         return wxConvertFromGTK(gs.c_str(), font);
  77     }
  78
  79     #define wxGTK_CONV(s) wxGTK_CONV_FONT((s), m_font)
  80     #define wxGTK_CONV_ENC(s, enc) wxConvertToGTK((s), (enc))
  81     #define wxGTK_CONV_FONT(s, font) wxConvertToGTK((s), (font))
  82     #define wxGTK_CONV_SYS(s) wxConvertToGTK((s))
  83
  84     #define wxGTK_CONV_BACK(s) wxConvertFromGTK((s), m_font)
  85     #define wxGTK_CONV_BACK_ENC(s, enc) wxConvertFromGTK((s), (enc))
  86     #define wxGTK_CONV_BACK_FONT(s, font) wxConvertFromGTK((s), (font))
  87     #define wxGTK_CONV_BACK_SYS(s) wxConvertFromGTK((s))
  88 #endif
  89
  90 // ----------------------------------------------------------------------------
  91 // various private helper functions
  92 // ----------------------------------------------------------------------------
  93
  94 namespace wxGTKPrivate
  95 {
  96
  97 // these functions create the GTK widgets of the specified types which can then
  98 // used to retrieve their styles, pass them to drawing functions &c
  99 //
 100 // the returned widgets shouldn't be destroyed, this is done automatically on
 101 // shutdown
 102 GtkWidget *GetButtonWidget();
 103 GtkWidget *GetCheckButtonWidget();
 104 GtkWidget *GetComboBoxWidget();
 105 GtkWidget *GetEntryWidget();
 106 GtkWidget *GetHeaderButtonWidgetFirst();
 107 GtkWidget *GetHeaderButtonWidgetLast();
 108 GtkWidget *GetHeaderButtonWidget();
 109 GtkWidget *GetRadioButtonWidget();
 110 GtkWidget *GetSplitterWidget();
 111 GtkWidget *GetTextEntryWidget();
 112 GtkWidget *GetTreeWidget();
 113
 114 } // wxGTKPrivate
 115
 116 #endif // _WX_GTK_PRIVATE_H_