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     m_inputHandler = (wxInputHandler *)NULL;
  60 }
  61
  62 bool wxControl::Create(wxWindow *parent,
  63                        wxWindowID id,
  64                        const wxPoint& pos,
  65                        const wxSize& size,
  66                        long style,
  67                        const wxValidator& validator,
  68                        const wxString& name)
  69 {
  70     if ( !wxControlBase::Create(parent, id, pos, size, style, validator, name) )
  71     {
  72         // underlying window creation failed?
  73         return false;
  74     }
  75
  76     return true;
  77 }
  78
  79 // ----------------------------------------------------------------------------
  80 // mnemonics handling
  81 // ----------------------------------------------------------------------------
  82
  83 /* static */
  84 int wxControl::FindAccelIndex(const wxString& label, wxString *labelOnly)
  85 {
  86     // the character following MNEMONIC_PREFIX is the accelerator for this
  87     // control unless it is MNEMONIC_PREFIX too - this allows to insert
  88     // literal MNEMONIC_PREFIX chars into the label
  89     static const wxChar MNEMONIC_PREFIX = _T('&');
  90
  91     if ( labelOnly )
  92     {
  93         labelOnly->Empty();
  94         labelOnly->Alloc(label.length());
  95     }
  96
  97     int indexAccel = -1;
  98     for ( const wxChar *pc = label; *pc != wxT('\0'); pc++ )
  99     {
 100         if ( *pc == MNEMONIC_PREFIX )
 101         {
 102             pc++; // skip it
 103             if ( *pc != MNEMONIC_PREFIX )
 104             {
 105                 if ( indexAccel == -1 )
 106                 {
 107                     // remember it (-1 is for MNEMONIC_PREFIX itself
 108                     indexAccel = pc - label.c_str() - 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     wxString labelOld = m_label;
 129     m_indexAccel = FindAccelIndex(label, &m_label);
 130
 131     if ( m_label != labelOld )
 132     {
 133         Refresh();
 134     }
 135 }
 136
 137 wxString wxControl::GetLabel() const
 138 {
 139     return m_label;
 140 }
 141
 142 #endif // wxUSE_CONTROLS