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  <windows.h>
  37 #include  <windowsx.h>
  38
  39 #if !defined(__GNUWIN32__) || defined(__TWIN32__)
  40 #include  <commctrl.h>
  41 #endif
  42
  43 #ifdef GetClassInfo
  44 #undef GetClassInfo
  45 #endif
  46
  47 #ifdef GetClassName
  48 #undef GetClassName
  49 #endif
  50
  51 #if wxUSE_NATIVE_STATUSBAR
  52
  53 #if     !USE_SHARED_LIBRARY
  54   IMPLEMENT_DYNAMIC_CLASS(wxStatusBar95, wxStatusBar);
  55
  56   BEGIN_EVENT_TABLE(wxStatusBar95, wxStatusBar)
  57     EVT_PAINT(wxWindow::OnPaint)
  58     EVT_SIZE(wxStatusBar95::OnSize)
  59   END_EVENT_TABLE()
  60 #endif  //USE_SHARED_LIBRARY
  61
  62
  63 // ----------------------------------------------------------------------------
  64 // macros
  65 // ----------------------------------------------------------------------------
  66
  67 // windowsx.h and commctrl.h don't define those, so we do it here
  68 #define StatusBar_SetParts(h, n, w) SendMessage(h, SB_SETPARTS, (WPARAM)n, (LPARAM)w)
  69 #define StatusBar_SetText(h, n, t)  SendMessage(h, SB_SETTEXT, (WPARAM)n, (LPARAM)(LPCSTR)t)
  70 #define StatusBar_GetTextLen(h, n)  LOWORD(SendMessage(h, SB_GETTEXTLENGTH, (WPARAM)n, 0))
  71 #define StatusBar_GetText(h, n, s)  LOWORD(SendMessage(h, SB_GETTEXT, (WPARAM)n, (LPARAM)(LPSTR)s))
  72
  73 #define hwnd      ((HWND)m_hWnd)
  74
  75 // ============================================================================
  76 // implementation
  77 // ============================================================================
  78
  79 // ----------------------------------------------------------------------------
  80 // wxStatusBar95 class
  81 // ----------------------------------------------------------------------------
  82
  83 wxStatusBar95::wxStatusBar95()
  84 {
  85   SetParent(NULL);
  86   m_hWnd = 0;
  87   m_windowId = 0;
  88 }
  89
  90 wxStatusBar95::wxStatusBar95(wxWindow *parent, wxWindowID id, long style)
  91 {
  92   Create(parent, id, style);
  93 }
  94
  95 bool wxStatusBar95::Create(wxWindow *parent, wxWindowID id, long style)
  96 {
  97   SetParent(parent);
  98
  99   if (id == -1)
 100     m_windowId = NewControlId();
 101   else
 102     m_windowId = id;
 103
 104   DWORD wstyle = WS_CHILD | WS_VISIBLE;
 105   if ( style & wxST_SIZEGRIP )
 106     wstyle |= SBARS_SIZEGRIP;
 107
 108   m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
 109                                       "",
 110                                       (HWND)parent->GetHWND(),
 111                                       m_windowId);
 112   if ( m_hWnd == 0 ) {
 113     wxLogSysError("can't create status bar window");
 114     return FALSE;
 115   }
 116
 117   // this doesn't work: display problems (white 1-2 pixel borders...)
 118   //  SubclassWin(m_hWnd);
 119
 120   return TRUE;
 121 }
 122
 123 void wxStatusBar95::CopyFieldsWidth(const int widths[])
 124 {
 125   if (widths && !m_statusWidths)
 126     m_statusWidths = new int[m_nFields];
 127
 128   if ( widths != NULL ) {
 129     for ( int i = 0; i < m_nFields; i++ )
 130       m_statusWidths[i] = widths[i];
 131   }
 132   else {
 133     delete [] m_statusWidths;
 134     m_statusWidths = NULL;
 135   }
 136 }
 137
 138 void wxStatusBar95::SetFieldsCount(int nFields, const int widths[])
 139 {
 140   wxASSERT( (nFields > 0) && (nFields < 255) );
 141
 142   m_nFields = nFields;
 143
 144   CopyFieldsWidth(widths);
 145   SetFieldsWidth();
 146 }
 147
 148 void wxStatusBar95::SetStatusWidths(int n, const int widths[])
 149 {
 150   // @@ I don't understand what this function is for...
 151   wxASSERT( n == m_nFields );
 152
 153   CopyFieldsWidth(widths);
 154   SetFieldsWidth();
 155 }
 156
 157 void wxStatusBar95::SetFieldsWidth()
 158 {
 159   int *pWidths = new int[m_nFields];
 160
 161   int nWindowWidth, y;
 162   GetClientSize(&nWindowWidth, &y);
 163
 164   if ( m_statusWidths == NULL ) {
 165     // default: all fields have the same width
 166     int nWidth = nWindowWidth / m_nFields;
 167     for ( int i = 0; i < m_nFields; i++ )
 168       pWidths[i] = (i + 1) * nWidth;
 169   }
 170   else {
 171     // -1 doesn't mean the same thing for wxWindows and Win32, recalc
 172     int nTotalWidth = 0,
 173         nVarCount = 0,
 174         i;
 175     for ( i = 0; i < m_nFields; i++ ) {
 176       if ( m_statusWidths[i] == -1 )
 177         nVarCount++;
 178       else
 179         nTotalWidth += m_statusWidths[i];
 180     }
 181
 182     if ( nVarCount == 0 ) {
 183       // wrong! at least one field must be of variable width
 184       wxFAIL;
 185
 186       nVarCount++;
 187     }
 188
 189     int nVarWidth = (nWindowWidth - nTotalWidth) / nVarCount;
 190
 191     // do fill the array
 192     int nCurPos = 0;
 193     for ( i = 0; i < m_nFields; i++ ) {
 194       if ( m_statusWidths[i] == -1 )
 195         nCurPos += nVarWidth;
 196       else
 197         nCurPos += m_statusWidths[i];
 198       pWidths[i] = nCurPos;
 199     }
 200   }
 201
 202   if ( !StatusBar_SetParts(hwnd, m_nFields, pWidths) ) {
 203     wxLogDebug("StatusBar_SetParts failed.");
 204   }
 205
 206   delete [] pWidths;
 207 }
 208
 209 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 210 {
 211   if ( !StatusBar_SetText(hwnd, nField, strText) ) {
 212     wxLogDebug("StatusBar_SetText failed");
 213   }
 214 }
 215
 216 wxString wxStatusBar95::GetStatusText(int nField) const
 217 {
 218   wxASSERT( (nField > -1) && (nField < m_nFields) );
 219
 220   wxString str("");
 221   int len = StatusBar_GetTextLen(hwnd, nField);
 222   if (len > 0)
 223   {
 224         StatusBar_GetText(hwnd, nField, str.GetWriteBuf(len));
 225         str.UngetWriteBuf();
 226   }
 227   return str;
 228 }
 229
 230 void wxStatusBar95::OnSize(wxSizeEvent& event)
 231 {
 232   FORWARD_WM_SIZE(hwnd, SIZE_RESTORED, event.GetSize().x, event.GetSize().y,
 233                   SendMessage);
 234
 235   // adjust fields widths to the new size
 236   SetFieldsWidth();
 237 }
 238
 239 #endif  // wxUSE_NATIVE_STATUSBAR
 240
 241 #else
 242     #error "wxStatusBar95 is only available under Windows 95 and later."
 243 #endif // __WIN95__
 244