src/gtk/control.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        control.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "control.h"
  12 #endif
  13
  14 #include "wx/defs.h"
  15
  16 #if wxUSE_CONTROLS
  17
  18 #include "wx/control.h"
  19
  20 #include <gtk/gtk.h>
  21
  22 //-----------------------------------------------------------------------------
  23 // wxControl
  24 //-----------------------------------------------------------------------------
  25
  26 IMPLEMENT_DYNAMIC_CLASS(wxControl, wxWindow)
  27
  28 wxControl::wxControl()
  29 {
  30     m_needParent = TRUE;
  31 }
  32
  33 bool wxControl::Create( wxWindow *parent,
  34                       wxWindowID id,
  35                       const wxPoint &pos,
  36                       const wxSize &size,
  37                       long style,
  38                       const wxValidator& validator,
  39                       const wxString &name )
  40 {
  41     bool ret = wxWindow::Create(parent, id, pos, size, style, name);
  42
  43 #if wxUSE_VALIDATORS
  44     SetValidator(validator);
  45 #endif
  46
  47     return ret;
  48 }
  49
  50 void wxControl::SetLabel( const wxString &label )
  51 {
  52     m_label.Empty();
  53     for ( const wxChar *pc = label; *pc != wxT('\0'); pc++ )
  54     {
  55         if ( *pc == wxT('&') )
  56         {
  57             pc++; // skip it
  58 #if 0 // it would be unused anyhow for now - kbd interface not done yet
  59             if ( *pc != wxT('&') ) m_chAccel = *pc;
  60 #endif
  61         }
  62         m_label << *pc;
  63     }
  64 }
  65
  66 wxString wxControl::GetLabel() const
  67 {
  68     return m_label;
  69 }
  70
  71
  72 wxSize wxControl::DoGetBestSize() const
  73 {
  74     // Do not return any arbitrary default value...
  75     wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") );
  76
  77     GtkRequisition req;
  78     req.width = 2;
  79     req.height = 2;
  80     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
  81         (m_widget, &req );
  82
  83     return wxSize(req.width, req.height);
  84 }
  85
  86 wxString wxControl::PrepareLabelMnemonics( const wxString &label ) const
  87 {
  88     //Format mnemonics properly for GTK2. This can be called from GTK1.x, but
  89     //it's not very useful because mnemonics don't exist prior to GTK2.
  90     wxString label2;
  91     for (size_t i = 0; i < label.Len(); i++)
  92     {
  93         if (label.GetChar(i) == wxT('&'))
  94         {
  95             //Mnemonic escape sequence "&&" is a literal "&" in the output.
  96             if (label.GetChar(i + 1) == wxT('&'))
  97             {
  98                 label2 << wxT('&');
  99                 i++;
 100             }
 101             //Handle special case of "&_" (i.e. "_" is the mnemonic).
 102             //FIXME - Is it possible to use "_" as a GTK mnemonic? Just use a
 103             //dash for now.
 104             else if (label.GetChar(i + 1) == wxT('_'))
 105             {
 106                 label2 << wxT("_-");
 107                 i++;
 108             }
 109             //Replace WX mnemonic indicator "&" with GTK indicator "_".
 110             else
 111             {
 112                 label2 << wxT('_');
 113             }
 114         }
 115         else if (label.GetChar(i) == wxT('_'))
 116         {
 117             //Escape any underlines in the string so GTK doesn't use them.
 118             label2 << wxT("__");
 119         }
 120         else
 121         {
 122             label2 << label.GetChar(i);
 123         }
 124     }
 125     return label2;
 126 }
 127
 128 #endif // wxUSE_CONTROLS
 129