src/univ/control.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/univ/control.cpp
   3 // Purpose:     universal wxControl: adds handling of mnemonics
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     14.08.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  17     #pragma implementation "control.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #if wxUSE_CONTROLS
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/app.h"
  34     #include "wx/control.h"
  35     #include "wx/dcclient.h"
  36 #endif
  37
  38 #include "wx/univ/renderer.h"
  39 #include "wx/univ/inphand.h"
  40 #include "wx/univ/theme.h"
  41
  42 // ============================================================================
  43 // implementation
  44 // ============================================================================
  45
  46 IMPLEMENT_DYNAMIC_CLASS(wxControl, wxWindow)
  47
  48 BEGIN_EVENT_TABLE(wxControl, wxControlBase)
  49     WX_EVENT_TABLE_INPUT_CONSUMER(wxControl)
  50 END_EVENT_TABLE()
  51
  52 WX_FORWARD_TO_INPUT_CONSUMER(wxControl)
  53
  54 // ----------------------------------------------------------------------------
  55 // creation
  56 // ----------------------------------------------------------------------------
  57
  58 void wxControl::Init()
  59 {
  60     m_indexAccel = -1;
  61
  62     m_inputHandler = (wxInputHandler *)NULL;
  63 }
  64
  65 bool wxControl::Create(wxWindow *parent,
  66                        wxWindowID id,
  67                        const wxPoint& pos,
  68                        const wxSize& size,
  69                        long style,
  70                        const wxValidator& validator,
  71                        const wxString& name)
  72 {
  73     if ( !wxControlBase::Create(parent, id, pos, size, style, validator, name) )
  74     {
  75         // underlying window creation failed?
  76         return FALSE;
  77     }
  78
  79     return TRUE;
  80 }
  81
  82 // ----------------------------------------------------------------------------
  83 // mnemonics handling
  84 // ----------------------------------------------------------------------------
  85
  86 /* static */
  87 int wxControl::FindAccelIndex(const wxString& label, wxString *labelOnly)
  88 {
  89     // the character following MNEMONIC_PREFIX is the accelerator for this
  90     // control unless it is MNEMONIC_PREFIX too - this allows to insert
  91     // literal MNEMONIC_PREFIX chars into the label
  92     static const wxChar MNEMONIC_PREFIX = _T('&');
  93
  94     if ( labelOnly )
  95     {
  96         labelOnly->Empty();
  97         labelOnly->Alloc(label.length());
  98     }
  99
 100     int indexAccel = -1;
 101     for ( const wxChar *pc = label; *pc != wxT('\0'); pc++ )
 102     {
 103         if ( *pc == MNEMONIC_PREFIX )
 104         {
 105             pc++; // skip it
 106             if ( *pc != MNEMONIC_PREFIX )
 107             {
 108                 if ( indexAccel == -1 )
 109                 {
 110                     // remember it (-1 is for MNEMONIC_PREFIX itself
 111                     indexAccel = pc - label.c_str() - 1;
 112                 }
 113                 else
 114                 {
 115                     wxFAIL_MSG(_T("duplicate accel char in control label"));
 116                 }
 117             }
 118         }
 119
 120         if ( labelOnly )
 121         {
 122             *labelOnly += *pc;
 123         }
 124     }
 125
 126     return indexAccel;
 127 }
 128
 129 void wxControl::SetLabel(const wxString& label)
 130 {
 131     wxString labelOld = m_label;
 132     m_indexAccel = FindAccelIndex(label, &m_label);
 133
 134     if ( m_label != labelOld )
 135     {
 136         Refresh();
 137     }
 138 }
 139
 140 wxString wxControl::GetLabel() const
 141 {
 142     return m_label;
 143 }
 144
 145 #endif // wxUSE_CONTROLS