src/msw/statbr95.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/statbr95.cpp
   3 // Purpose:     native implementation of wxStatusBar
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     04.04.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "statbr95.h"
  14 #endif
  15
  16 // for compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20   #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24   #include "wx/setup.h"
  25   #include "wx/frame.h"
  26   #include "wx/settings.h"
  27   #include "wx/dcclient.h"
  28 #endif
  29
  30 #ifdef __WIN95__
  31
  32 #include "wx/log.h"
  33 #include "wx/generic/statusbr.h"
  34 #include "wx/msw/statbr95.h"
  35
  36 #include "wx/msw/private.h"
  37 #include <windowsx.h>
  38
  39 #if !defined(__GNUWIN32__) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  40 #include <commctrl.h>
  41 #endif
  42
  43 #if wxUSE_NATIVE_STATUSBAR
  44
  45   IMPLEMENT_DYNAMIC_CLASS(wxStatusBar95, wxStatusBar);
  46
  47   BEGIN_EVENT_TABLE(wxStatusBar95, wxStatusBar)
  48     EVT_SIZE(wxStatusBar95::OnSize)
  49   END_EVENT_TABLE()
  50
  51
  52 // ----------------------------------------------------------------------------
  53 // macros
  54 // ----------------------------------------------------------------------------
  55
  56 // windowsx.h and commctrl.h don't define those, so we do it here
  57 #define StatusBar_SetParts(h, n, w) SendMessage(h, SB_SETPARTS, (WPARAM)n, (LPARAM)w)
  58 #define StatusBar_SetText(h, n, t)  SendMessage(h, SB_SETTEXT, (WPARAM)n, (LPARAM)(LPCTSTR)t)
  59 #define StatusBar_GetTextLen(h, n)  LOWORD(SendMessage(h, SB_GETTEXTLENGTH, (WPARAM)n, 0))
  60 #define StatusBar_GetText(h, n, s)  LOWORD(SendMessage(h, SB_GETTEXT, (WPARAM)n, (LPARAM)(LPTSTR)s))
  61
  62 #define hwnd      ((HWND)m_hWnd)
  63
  64 // ============================================================================
  65 // implementation
  66 // ============================================================================
  67
  68 // ----------------------------------------------------------------------------
  69 // wxStatusBar95 class
  70 // ----------------------------------------------------------------------------
  71
  72 wxStatusBar95::wxStatusBar95()
  73 {
  74   SetParent(NULL);
  75   m_hWnd = 0;
  76   m_windowId = 0;
  77 }
  78
  79 wxStatusBar95::wxStatusBar95(wxWindow *parent, wxWindowID id, long style)
  80 {
  81   Create(parent, id, style);
  82 }
  83
  84 bool wxStatusBar95::Create(wxWindow *parent, wxWindowID id, long style)
  85 {
  86   SetParent(parent);
  87
  88   if (id == -1)
  89     m_windowId = NewControlId();
  90   else
  91     m_windowId = id;
  92
  93   DWORD wstyle = WS_CHILD | WS_VISIBLE;
  94   if ( style & wxST_SIZEGRIP )
  95     wstyle |= SBARS_SIZEGRIP;
  96
  97   m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
  98                                       wxT(""),
  99                                       (HWND)parent->GetHWND(),
 100                                       m_windowId);
 101   if ( m_hWnd == 0 ) {
 102     wxLogSysError(wxT("can't create status bar window"));
 103     return FALSE;
 104   }
 105
 106   // this doesn't work: display problems (white 1-2 pixel borders...)
 107   //  SubclassWin(m_hWnd);
 108
 109   return TRUE;
 110 }
 111
 112 void wxStatusBar95::CopyFieldsWidth(const int widths[])
 113 {
 114   if (widths && !m_statusWidths)
 115     m_statusWidths = new int[m_nFields];
 116
 117   if ( widths != NULL ) {
 118     for ( int i = 0; i < m_nFields; i++ )
 119       m_statusWidths[i] = widths[i];
 120   }
 121   else {
 122     delete [] m_statusWidths;
 123     m_statusWidths = NULL;
 124   }
 125 }
 126
 127 void wxStatusBar95::SetFieldsCount(int nFields, const int widths[])
 128 {
 129   wxASSERT( (nFields > 0) && (nFields < 255) );
 130
 131   m_nFields = nFields;
 132
 133   CopyFieldsWidth(widths);
 134   SetFieldsWidth();
 135 }
 136
 137 void wxStatusBar95::SetStatusWidths(int n, const int widths[])
 138 {
 139   // @@ I don't understand what this function is for...
 140   wxASSERT( n == m_nFields );
 141
 142   CopyFieldsWidth(widths);
 143   SetFieldsWidth();
 144 }
 145
 146 void wxStatusBar95::SetFieldsWidth()
 147 {
 148     if ( !m_nFields )
 149         return;
 150
 151   int *pWidths = new int[m_nFields];
 152
 153   int nWindowWidth, y;
 154   GetClientSize(&nWindowWidth, &y);
 155
 156   if ( m_statusWidths == NULL ) {
 157     // default: all fields have the same width
 158     int nWidth = nWindowWidth / m_nFields;
 159     for ( int i = 0; i < m_nFields; i++ )
 160       pWidths[i] = (i + 1) * nWidth;
 161   }
 162   else {
 163     // -1 doesn't mean the same thing for wxWindows and Win32, recalc
 164     int nTotalWidth = 0,
 165         nVarCount = 0,
 166         i;
 167     for ( i = 0; i < m_nFields; i++ ) {
 168       if ( m_statusWidths[i] == -1 )
 169         nVarCount++;
 170       else
 171         nTotalWidth += m_statusWidths[i];
 172     }
 173
 174     if ( nVarCount == 0 ) {
 175       // wrong! at least one field must be of variable width
 176       wxFAIL;
 177
 178       nVarCount++;
 179     }
 180
 181     int nVarWidth = (nWindowWidth - nTotalWidth) / nVarCount;
 182
 183     // do fill the array
 184     int nCurPos = 0;
 185     for ( i = 0; i < m_nFields; i++ ) {
 186       if ( m_statusWidths[i] == -1 )
 187         nCurPos += nVarWidth;
 188       else
 189         nCurPos += m_statusWidths[i];
 190       pWidths[i] = nCurPos;
 191     }
 192   }
 193
 194   if ( !StatusBar_SetParts(hwnd, m_nFields, pWidths) ) {
 195     wxLogLastError(wxT("StatusBar_SetParts"));
 196   }
 197
 198   delete [] pWidths;
 199 }
 200
 201 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 202 {
 203   if ( !StatusBar_SetText(hwnd, nField, strText) ) {
 204     wxLogLastError(wxT("StatusBar_SetText"));
 205   }
 206 }
 207
 208 wxString wxStatusBar95::GetStatusText(int nField) const
 209 {
 210   wxASSERT( (nField > -1) && (nField < m_nFields) );
 211
 212   wxString str(wxT(""));
 213   int len = StatusBar_GetTextLen(hwnd, nField);
 214   if (len > 0)
 215   {
 216         StatusBar_GetText(hwnd, nField, str.GetWriteBuf(len));
 217         str.UngetWriteBuf();
 218   }
 219   return str;
 220 }
 221
 222 void wxStatusBar95::OnSize(wxSizeEvent& event)
 223 {
 224   FORWARD_WM_SIZE(hwnd, SIZE_RESTORED, event.GetSize().x, event.GetSize().y,
 225                   SendMessage);
 226
 227   // adjust fields widths to the new size
 228   SetFieldsWidth();
 229 }
 230
 231 #endif  // wxUSE_NATIVE_STATUSBAR
 232
 233 #else
 234     #error "wxStatusBar95 is only available under Windows 95 and later."
 235 #endif // __WIN95__
 236