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