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 #ifndef WX_PRECOMP
  29     #include "wx/app.h"
  30     #include "wx/control.h"
  31     #include "wx/dcclient.h"
  32 #endif
  33
  34 #include "wx/univ/renderer.h"
  35 #include "wx/univ/inphand.h"
  36 #include "wx/univ/theme.h"
  37
  38 // ============================================================================
  39 // implementation
  40 // ============================================================================
  41
  42 IMPLEMENT_DYNAMIC_CLASS(wxControl, wxWindow)
  43
  44 BEGIN_EVENT_TABLE(wxControl, wxControlBase)
  45     WX_EVENT_TABLE_INPUT_CONSUMER(wxControl)
  46 END_EVENT_TABLE()
  47
  48 WX_FORWARD_TO_INPUT_CONSUMER(wxControl)
  49
  50 // ----------------------------------------------------------------------------
  51 // creation
  52 // ----------------------------------------------------------------------------
  53
  54 void wxControl::Init()
  55 {
  56     m_indexAccel = -1;
  57
  58     m_inputHandler = (wxInputHandler *)NULL;
  59 }
  60
  61 bool wxControl::Create(wxWindow *parent,
  62                        wxWindowID id,
  63                        const wxPoint& pos,
  64                        const wxSize& size,
  65                        long style,
  66                        const wxValidator& validator,
  67                        const wxString& name)
  68 {
  69     if ( !wxControlBase::Create(parent, id, pos, size, style, validator, name) )
  70     {
  71         // underlying window creation failed?
  72         return false;
  73     }
  74
  75     return true;
  76 }
  77
  78 // ----------------------------------------------------------------------------
  79 // mnemonics handling
  80 // ----------------------------------------------------------------------------
  81
  82 /* static */
  83 int wxControl::FindAccelIndex(const wxString& label, wxString *labelOnly)
  84 {
  85     // the character following MNEMONIC_PREFIX is the accelerator for this
  86     // control unless it is MNEMONIC_PREFIX too - this allows to insert
  87     // literal MNEMONIC_PREFIX chars into the label
  88     static const wxChar MNEMONIC_PREFIX = _T('&');
  89
  90     if ( labelOnly )
  91     {
  92         labelOnly->Empty();
  93         labelOnly->Alloc(label.length());
  94     }
  95
  96     int indexAccel = -1;
  97     for ( const wxChar *pc = label; *pc != wxT('\0'); pc++ )
  98     {
  99         if ( *pc == MNEMONIC_PREFIX )
 100         {
 101             pc++; // skip it
 102             if ( *pc != MNEMONIC_PREFIX )
 103             {
 104                 if ( indexAccel == -1 )
 105                 {
 106                     // remember it (-1 is for MNEMONIC_PREFIX itself
 107                     indexAccel = pc - label.c_str() - 1;
 108                 }
 109                 else
 110                 {
 111                     wxFAIL_MSG(_T("duplicate accel char in control label"));
 112                 }
 113             }
 114         }
 115
 116         if ( labelOnly )
 117         {
 118             *labelOnly += *pc;
 119         }
 120     }
 121
 122     return indexAccel;
 123 }
 124
 125 void wxControl::SetLabel(const wxString& label)
 126 {
 127     wxString labelOld = m_label;
 128     m_indexAccel = FindAccelIndex(label, &m_label);
 129
 130     if ( m_label != labelOld )
 131     {
 132         Refresh();
 133     }
 134 }
 135
 136 wxString wxControl::GetLabel() const
 137 {
 138     return m_label;
 139 }
 140
 141 #endif // wxUSE_CONTROLS