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 license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  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     // Ee use wxNO_FULL_REPAINT_ON_RESIZE by default as it results in much
  74     // less flicker and none of the standard controls needs to be entirely
  75     // repainted after resize anyhow.
  76     if ( !wxControlBase::Create(parent, id, pos, size,
  77                                 style | wxNO_FULL_REPAINT_ON_RESIZE ,
  78                                 validator, name) )
  79     {
  80         // underlying window creation failed?
  81         return FALSE;
  82     }
  83
  84     return TRUE;
  85 }
  86
  87 // ----------------------------------------------------------------------------
  88 // mnemonics handling
  89 // ----------------------------------------------------------------------------
  90
  91 /* static */
  92 int wxControl::FindAccelIndex(const wxString& label, wxString *labelOnly)
  93 {
  94     // the character following MNEMONIC_PREFIX is the accelerator for this
  95     // control unless it is MNEMONIC_PREFIX too - this allows to insert
  96     // literal MNEMONIC_PREFIX chars into the label
  97     static const wxChar MNEMONIC_PREFIX = _T('&');
  98
  99     if ( labelOnly )
 100     {
 101         labelOnly->Empty();
 102         labelOnly->Alloc(label.length());
 103     }
 104
 105     int indexAccel = -1;
 106     for ( const wxChar *pc = label; *pc != wxT('\0'); pc++ )
 107     {
 108         if ( *pc == MNEMONIC_PREFIX )
 109         {
 110             pc++; // skip it
 111             if ( *pc != MNEMONIC_PREFIX )
 112             {
 113                 if ( indexAccel == -1 )
 114                 {
 115                     // remember it (-1 is for MNEMONIC_PREFIX itself
 116                     indexAccel = pc - label.c_str() - 1;
 117                 }
 118                 else
 119                 {
 120                     wxFAIL_MSG(_T("duplicate accel char in control label"));
 121                 }
 122             }
 123         }
 124
 125         if ( labelOnly )
 126         {
 127             *labelOnly += *pc;
 128         }
 129     }
 130
 131     return indexAccel;
 132 }
 133
 134 void wxControl::SetLabel(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 wxString wxControl::GetLabel() const
 146 {
 147     return m_label;
 148 }
 149
 150 #endif // wxUSE_CONTROLS