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 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_CONTROLS
  27
  28 #include "wx/control.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/app.h"
  32     #include "wx/dcclient.h"
  33 #endif
  34
  35 #include "wx/univ/renderer.h"
  36 #include "wx/univ/inphand.h"
  37 #include "wx/univ/theme.h"
  38
  39 // ============================================================================
  40 // implementation
  41 // ============================================================================
  42
  43 IMPLEMENT_DYNAMIC_CLASS(wxControl, wxWindow)
  44
  45 BEGIN_EVENT_TABLE(wxControl, wxControlBase)
  46     WX_EVENT_TABLE_INPUT_CONSUMER(wxControl)
  47 END_EVENT_TABLE()
  48
  49 WX_FORWARD_TO_INPUT_CONSUMER(wxControl)
  50
  51 // ----------------------------------------------------------------------------
  52 // creation
  53 // ----------------------------------------------------------------------------
  54
  55 void wxControl::Init()
  56 {
  57     m_indexAccel = -1;
  58 }
  59
  60 bool wxControl::Create(wxWindow *parent,
  61                        wxWindowID id,
  62                        const wxPoint& pos,
  63                        const wxSize& size,
  64                        long style,
  65                        const wxValidator& validator,
  66                        const wxString& name)
  67 {
  68     if ( !wxControlBase::Create(parent, id, pos, size, style, validator, name) )
  69     {
  70         // underlying window creation failed?
  71         return false;
  72     }
  73
  74     return true;
  75 }
  76
  77 // ----------------------------------------------------------------------------
  78 // mnemonics handling
  79 // ----------------------------------------------------------------------------
  80
  81 /* static */
  82 int wxControl::FindAccelIndex(const wxString& label, wxString *labelOnly)
  83 {
  84     // the character following MNEMONIC_PREFIX is the accelerator for this
  85     // control unless it is MNEMONIC_PREFIX too - this allows to insert
  86     // literal MNEMONIC_PREFIX chars into the label
  87     static const wxChar MNEMONIC_PREFIX = _T('&');
  88
  89     if ( labelOnly )
  90     {
  91         labelOnly->Empty();
  92         labelOnly->Alloc(label.length());
  93     }
  94
  95     int indexAccel = -1;
  96     for ( wxString::const_iterator pc = label.begin(); pc != label.end(); ++pc )
  97     {
  98         if ( *pc == MNEMONIC_PREFIX )
  99         {
 100             ++pc; // skip it
 101             if ( pc == label.end() )
 102                 break;
 103             else if ( *pc != MNEMONIC_PREFIX )
 104             {
 105                 if ( indexAccel == -1 )
 106                 {
 107                     // remember it (-1 is for MNEMONIC_PREFIX itself
 108                     indexAccel = pc - label.begin() - 1;
 109                 }
 110                 else
 111                 {
 112                     wxFAIL_MSG(_T("duplicate accel char in control label"));
 113                 }
 114             }
 115         }
 116
 117         if ( labelOnly )
 118         {
 119             *labelOnly += *pc;
 120         }
 121     }
 122
 123     return indexAccel;
 124 }
 125
 126 void wxControl::SetLabel(const wxString& label)
 127 {
 128     // save original label
 129     wxControlBase::SetLabel(label);
 130
 131     UnivDoSetLabel(label);
 132 }
 133
 134 void wxControl::UnivDoSetLabel(const wxString& label)
 135 {
 136     wxString labelOld = m_label;
 137     m_indexAccel = FindAccelIndex(label, &m_label);
 138
 139     if ( m_label != labelOld )
 140     {
 141         Refresh();
 142     }
 143 }
 144
 145 #endif // wxUSE_CONTROLS