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