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 #if defined(__WIN95__) && wxUSE_NATIVE_STATUSBAR
  31
  32 #include "wx/intl.h"
  33 #include "wx/log.h"
  34 #include "wx/statusbr.h"
  35
  36 #include "wx/msw/private.h"
  37 #include <windowsx.h>
  38
  39 #if !(defined(__GNUWIN32_OLD__) || defined(__TWIN32__))
  40     #include <commctrl.h>
  41 #endif
  42
  43 // ----------------------------------------------------------------------------
  44 // wxWindows macros
  45 // ----------------------------------------------------------------------------
  46
  47 IMPLEMENT_DYNAMIC_CLASS(wxStatusBar95, wxWindow);
  48 IMPLEMENT_DYNAMIC_CLASS(wxStatusBar, wxStatusBar95)
  49
  50 // ----------------------------------------------------------------------------
  51 // macros
  52 // ----------------------------------------------------------------------------
  53
  54 // windowsx.h and commctrl.h don't define those, so we do it here
  55 #define StatusBar_SetParts(h, n, w) SendMessage(h, SB_SETPARTS, (WPARAM)n, (LPARAM)w)
  56 #define StatusBar_SetText(h, n, t)  SendMessage(h, SB_SETTEXT, (WPARAM)n, (LPARAM)(LPCTSTR)t)
  57 #define StatusBar_GetTextLen(h, n)  LOWORD(SendMessage(h, SB_GETTEXTLENGTH, (WPARAM)n, 0))
  58 #define StatusBar_GetText(h, n, s)  LOWORD(SendMessage(h, SB_GETTEXT, (WPARAM)n, (LPARAM)(LPTSTR)s))
  59
  60 // ----------------------------------------------------------------------------
  61 //
  62 // ----------------------------------------------------------------------------
  63
  64 // static WNDPROC gs_wndprocStatBar = NULL;
  65 static WXFARPROC gs_wndprocStatBar = (WXFARPROC) NULL;
  66
  67 LRESULT APIENTRY wxStatusBarProc(HWND hwnd,
  68                                  UINT message,
  69                                  WPARAM wParam,
  70                                  LPARAM lParam)
  71 {
  72     if ( message == WM_COMMAND )
  73     {
  74         wxStatusBar95 *sb = (wxStatusBar95 *)GetWindowLong(hwnd, GWL_USERDATA);
  75         sb->MSWWindowProc(message, wParam, lParam);
  76     }
  77
  78     return ::CallWindowProc(CASTWNDPROC gs_wndprocStatBar, hwnd, message, wParam, lParam);
  79 }
  80
  81 // ============================================================================
  82 // implementation
  83 // ============================================================================
  84
  85 // ----------------------------------------------------------------------------
  86 // wxStatusBar95 class
  87 // ----------------------------------------------------------------------------
  88
  89 wxStatusBar95::wxStatusBar95()
  90 {
  91   SetParent(NULL);
  92   m_hWnd = 0;
  93   m_windowId = 0;
  94 }
  95
  96 bool wxStatusBar95::Create(wxWindow *parent,
  97                            wxWindowID id,
  98                            long style,
  99                            const wxString& name)
 100 {
 101     wxCHECK_MSG( parent, FALSE, wxT("status bar must have a parent") );
 102
 103     SetName(name);
 104     SetWindowStyleFlag(style);
 105     SetParent(parent);
 106
 107     parent->AddChild(this);
 108
 109     m_windowId = id == -1 ? NewControlId() : id;
 110
 111     DWORD wstyle = WS_CHILD | WS_VISIBLE;
 112
 113     // setting SBARS_SIZEGRIP is perfectly useless: it's always on by default
 114     // (at least in the version of comctl32.dll I'm using), and the only way to
 115     // turn it off is to use CCS_TOP style - as we position the status bar
 116     // manually anyhow (see DoMoveWindow), use CCS_TOP style if wxST_SIZEGRIP
 117     // is not given
 118     if ( !(style & wxST_SIZEGRIP) )
 119     {
 120         wstyle |= CCS_TOP;
 121     }
 122     else
 123     {
 124         // may be some versions of comctl32.dll do need it - anyhow, it won't
 125         // do any harm
 126         wstyle |= SBARS_SIZEGRIP;
 127     }
 128
 129     m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
 130                                         wxEmptyString,
 131                                         GetHwndOf(parent),
 132                                         m_windowId);
 133     if ( m_hWnd == 0 )
 134     {
 135         wxLogSysError(_("Failed to create a status bar."));
 136
 137         return FALSE;
 138     }
 139
 140     SetFieldsCount(1);
 141
 142     // we can't subclass this window as usual because the status bar window
 143     // proc processes WM_SIZE and WM_PAINT specially
 144     //  SubclassWin(m_hWnd);
 145
 146     // but we want to process the messages from it still, so do custom
 147     // subclassing here
 148     gs_wndprocStatBar = (WXFARPROC)GetWindowLong(GetHwnd(), GWL_WNDPROC);
 149     SetWindowLong(GetHwnd(), GWL_WNDPROC, (LONG)wxStatusBarProc);
 150     SetWindowLong(GetHwnd(), GWL_USERDATA, (LONG)this);
 151
 152     return TRUE;
 153 }
 154
 155 wxStatusBar95::~wxStatusBar95()
 156 {
 157     delete [] m_statusWidths;
 158 }
 159
 160 void wxStatusBar95::CopyFieldsWidth(const int widths[])
 161 {
 162   if (widths && !m_statusWidths)
 163     m_statusWidths = new int[m_nFields];
 164
 165   if ( widths != NULL ) {
 166     for ( int i = 0; i < m_nFields; i++ )
 167       m_statusWidths[i] = widths[i];
 168   }
 169   else {
 170     delete [] m_statusWidths;
 171     m_statusWidths = NULL;
 172   }
 173 }
 174
 175 void wxStatusBar95::SetFieldsCount(int nFields, const int *widths)
 176 {
 177   // this is Windows limitation
 178   wxASSERT_MSG( (nFields > 0) && (nFields < 255), _T("too many fields") );
 179
 180   m_nFields = nFields;
 181
 182   CopyFieldsWidth(widths);
 183   SetFieldsWidth();
 184 }
 185
 186 void wxStatusBar95::SetStatusWidths(int n, const int widths[])
 187 {
 188   wxASSERT_MSG( n == m_nFields, _T("field number mismatch") );
 189
 190   CopyFieldsWidth(widths);
 191   SetFieldsWidth();
 192 }
 193
 194 void wxStatusBar95::SetFieldsWidth()
 195 {
 196     if ( !m_nFields )
 197         return;
 198
 199     int aBorders[3];
 200     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 201
 202     int extraWidth = aBorders[2]; // space between fields
 203
 204     int *pWidths = new int[m_nFields];
 205
 206     int nWindowWidth, y;
 207     GetClientSize(&nWindowWidth, &y);
 208
 209     if ( m_statusWidths == NULL ) {
 210         // default: all fields have the same width
 211         int nWidth = nWindowWidth / m_nFields;
 212         for ( int i = 0; i < m_nFields; i++ )
 213             pWidths[i] = (i + 1) * nWidth;
 214     }
 215     else {
 216         // -1 doesn't mean the same thing for wxWindows and Win32, recalc
 217         int nTotalWidth = 0,
 218         nVarCount = 0,
 219         i;
 220         for ( i = 0; i < m_nFields; i++ ) {
 221             if ( m_statusWidths[i] == -1 )
 222                 nVarCount++;
 223             else
 224                 nTotalWidth += m_statusWidths[i] + extraWidth;
 225         }
 226
 227         if ( nVarCount == 0 ) {
 228             wxFAIL_MSG( _T("at least one field must be of variable width") );
 229
 230             nVarCount++;
 231         }
 232
 233         int nVarWidth = (nWindowWidth - nTotalWidth) / nVarCount;
 234
 235         // do fill the array
 236         int nCurPos = 0;
 237         for ( i = 0; i < m_nFields; i++ ) {
 238             if ( m_statusWidths[i] == -1 )
 239                 nCurPos += nVarWidth;
 240             else
 241                 nCurPos += m_statusWidths[i] + extraWidth;
 242             pWidths[i] = nCurPos;
 243         }
 244     }
 245
 246     if ( !StatusBar_SetParts(GetHwnd(), m_nFields, pWidths) ) {
 247         wxLogLastError(wxT("StatusBar_SetParts"));
 248     }
 249
 250     delete [] pWidths;
 251 }
 252
 253 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 254 {
 255     wxCHECK_RET( (nField >= 0) && (nField < m_nFields),
 256                  _T("invalid statusbar field index") );
 257
 258   if ( !StatusBar_SetText(GetHwnd(), nField, strText) ) {
 259     wxLogLastError(wxT("StatusBar_SetText"));
 260   }
 261 }
 262
 263 wxString wxStatusBar95::GetStatusText(int nField) const
 264 {
 265     wxCHECK_MSG( (nField >= 0) && (nField < m_nFields), wxEmptyString,
 266                  _T("invalid statusbar field index") );
 267
 268   wxString str;
 269   int len = StatusBar_GetTextLen(GetHwnd(), nField);
 270   if (len > 0)
 271   {
 272     StatusBar_GetText(GetHwnd(), nField, str.GetWriteBuf(len));
 273     str.UngetWriteBuf();
 274   }
 275   return str;
 276 }
 277
 278 int wxStatusBar95::GetBorderX() const
 279 {
 280     int aBorders[3];
 281     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 282
 283     return aBorders[0];
 284 }
 285
 286 int wxStatusBar95::GetBorderY() const
 287 {
 288     int aBorders[3];
 289     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 290
 291     return aBorders[1];
 292 }
 293
 294 void wxStatusBar95::SetMinHeight(int height)
 295 {
 296     SendMessage(GetHwnd(), SB_SETMINHEIGHT, height + 2*GetBorderY(), 0);
 297
 298     // have to send a (dummy) WM_SIZE to redraw it now
 299     SendMessage(GetHwnd(), WM_SIZE, 0, 0);
 300 }
 301
 302 bool wxStatusBar95::GetFieldRect(int i, wxRect& rect) const
 303 {
 304     wxCHECK_MSG( (i >= 0) && (i < m_nFields), FALSE,
 305                  _T("invalid statusbar field index") );
 306
 307     RECT r;
 308     if ( !::SendMessage(GetHwnd(), SB_GETRECT, i, (LPARAM)&r) )
 309     {
 310         wxLogLastError("SendMessage(SB_GETRECT)");
 311     }
 312
 313     wxCopyRECTToRect(r, rect);
 314
 315     return TRUE;
 316 }
 317
 318 void wxStatusBar95::DoMoveWindow(int x, int y, int width, int height)
 319 {
 320     // the status bar wnd proc must be forwarded the WM_SIZE message whenever
 321     // the stat bar position/size is changed because it normally positions the
 322     // control itself along bottom or top side of the parent window - failing
 323     // to do so will result in nasty visual effects
 324     FORWARD_WM_SIZE(GetHwnd(), SIZE_RESTORED, x, y, SendMessage);
 325
 326     // but now, when the standard status bar wnd proc did all it wanted to do,
 327     // move the status bar to its correct location - usually this call may be
 328     // omitted because for normal status bars (positioned along the bottom
 329     // edge) the position is already set correctly, but if the user wants to
 330     // position them in some exotic location, this is really needed
 331     wxWindow::DoMoveWindow(x, y, width, height);
 332
 333     // adjust fields widths to the new size
 334     SetFieldsWidth();
 335 }
 336
 337 #endif // __WIN95__ && wxUSE_NATIVE_STATUSBAR
 338