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