src/msw/tglbtn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/tglbtn.cpp
   3 // Purpose:     Definition of the wxToggleButton class, which implements a
   4 //              toggle button under wxMSW.
   5 // Author:      John Norris, minor changes by Axel Schlueter
   6 //              and William Gallafent.
   7 // Modified by:
   8 // Created:     08.02.01
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) 2000 Johnny C. Norris II
  11 // Licence:     wxWindows licence
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14 // ============================================================================
  15 // declarations
  16 // ============================================================================
  17
  18 // ----------------------------------------------------------------------------
  19 // headers
  20 // ----------------------------------------------------------------------------
  21
  22 #include "wx/wxprec.h"
  23
  24 #ifdef __BORLANDC__
  25     #pragma hdrstop
  26 #endif
  27
  28 #if wxUSE_TOGGLEBTN
  29
  30 #include "wx/tglbtn.h"
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/button.h"
  34     #include "wx/brush.h"
  35     #include "wx/dcscreen.h"
  36     #include "wx/settings.h"
  37
  38     #include "wx/log.h"
  39 #endif // WX_PRECOMP
  40
  41 #include "wx/msw/private.h"
  42 #include "wx/msw/private/button.h"
  43
  44 // ----------------------------------------------------------------------------
  45 // macros
  46 // ----------------------------------------------------------------------------
  47
  48 wxDEFINE_EVENT( wxEVT_TOGGLEBUTTON, wxCommandEvent );
  49
  50 // ============================================================================
  51 // implementation
  52 // ============================================================================
  53
  54 //-----------------------------------------------------------------------------
  55 // wxBitmapToggleButton
  56 //-----------------------------------------------------------------------------
  57
  58 IMPLEMENT_DYNAMIC_CLASS(wxBitmapToggleButton, wxToggleButton)
  59
  60 bool wxBitmapToggleButton::Create( wxWindow *parent, wxWindowID id,
  61                 const wxBitmap& label,const wxPoint& pos, const wxSize& size, long style,
  62                 const wxValidator& validator, const wxString& name )
  63 {
  64     if (!wxToggleButton::Create( parent, id, wxEmptyString, pos, size, style, validator, name ))
  65         return false;
  66
  67     SetBitmap(label);
  68
  69     if (size.x == -1 || size.y == -1)
  70     {
  71         wxSize new_size = GetBestSize();
  72         if (size.x != -1)
  73             new_size.x = size.x;
  74         if (size.y != -1)
  75             new_size.y = size.y;
  76         SetSize( new_size );
  77     }
  78
  79     return true;
  80 }
  81
  82
  83 // ----------------------------------------------------------------------------
  84 // wxToggleButton
  85 // ----------------------------------------------------------------------------
  86
  87 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
  88
  89 void wxToggleButton::Init()
  90 {
  91     m_state = false;
  92 }
  93
  94 // Single check box item
  95 bool wxToggleButton::Create(wxWindow *parent,
  96                             wxWindowID id,
  97                             const wxString& label,
  98                             const wxPoint& pos,
  99                             const wxSize& size, long style,
 100                             const wxValidator& validator,
 101                             const wxString& name)
 102 {
 103     Init();
 104
 105     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 106         return false;
 107
 108     // if the label contains several lines we must explicitly tell the button
 109     // about it or it wouldn't draw it correctly ("\n"s would just appear as
 110     // black boxes)
 111     //
 112     // NB: we do it here and not in MSWGetStyle() because we need the label
 113     //     value and the label is not set yet when MSWGetStyle() is called
 114     WXDWORD exstyle;
 115     WXDWORD msStyle = MSWGetStyle(style, &exstyle);
 116     msStyle |= wxMSWButton::GetMultilineStyle(label);
 117
 118     return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, exstyle);
 119 }
 120
 121 WXDWORD wxToggleButton::MSWGetStyle(long style, WXDWORD *exstyle) const
 122 {
 123     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 124
 125     msStyle |= BS_AUTOCHECKBOX | BS_PUSHLIKE | WS_TABSTOP;
 126
 127     if ( style & wxBU_LEFT )
 128       msStyle |= BS_LEFT;
 129     if ( style & wxBU_RIGHT )
 130       msStyle |= BS_RIGHT;
 131     if ( style & wxBU_TOP )
 132       msStyle |= BS_TOP;
 133     if ( style & wxBU_BOTTOM )
 134       msStyle |= BS_BOTTOM;
 135
 136     return msStyle;
 137 }
 138
 139 void wxToggleButton::SetValue(bool val)
 140 {
 141     m_state = val;
 142     if ( IsOwnerDrawn() )
 143     {
 144         Refresh();
 145     }
 146     else
 147     {
 148         ::SendMessage(GetHwnd(), BM_SETCHECK, val, 0);
 149     }
 150 }
 151
 152 bool wxToggleButton::GetValue() const
 153 {
 154     if ( IsOwnerDrawn() )
 155     {
 156         return m_state;
 157     }
 158     else
 159     {
 160         return ::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0) == BST_CHECKED;
 161     }
 162 }
 163
 164 void wxToggleButton::Command(wxCommandEvent& event)
 165 {
 166     SetValue(event.GetInt() != 0);
 167     ProcessCommand(event);
 168 }
 169
 170 bool wxToggleButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 171 {
 172     if ( param != BN_CLICKED && param != BN_DBLCLK )
 173         return false;
 174
 175     // first update the value so that user event handler gets the new
 176     // toggle button value
 177
 178     // ownerdrawn buttons don't manage their state themselves unlike usual
 179     // auto checkboxes so do it ourselves in any case
 180     m_state = !m_state;
 181
 182     wxCommandEvent event(wxEVT_TOGGLEBUTTON, m_windowId);
 183     event.SetInt(GetValue());
 184     event.SetEventObject(this);
 185     ProcessCommand(event);
 186     return true;
 187 }
 188
 189 wxAnyButton::State wxToggleButton::GetNormalState() const
 190 {
 191     if ( GetValue() )
 192         return State_Pressed;
 193     else
 194         return State_Normal;
 195 }
 196
 197 #endif // wxUSE_TOGGLEBTN