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     switch (message) {
  73         case WM_COMMAND:
  74         case WM_SIZE:
  75         case WM_MOVE:
  76         case WM_MOUSEMOVE:
  77         case WM_MOUSEMOVE:
  78         case WM_LBUTTONUP:
  79         case WM_LBUTTONDBLCLK:
  80         case WM_RBUTTONDOWN:
  81         case WM_RBUTTONUP:
  82         case WM_RBUTTONDBLCLK:
  83         case WM_MBUTTONDOWN:
  84         case WM_MBUTTONUP:
  85         case WM_MBUTTONDBLCLK:
  86             wxStatusBar95 *sb = (wxStatusBar95 *)GetWindowLong(hwnd, GWL_USERDATA);
  87             sb->MSWWindowProc(message, wParam, lParam);
  88             break;
  89     }
  90
  91     return ::CallWindowProc(CASTWNDPROC gs_wndprocStatBar, hwnd, message, wParam, lParam);
  92 }
  93
  94 // ============================================================================
  95 // implementation
  96 // ============================================================================
  97
  98 // ----------------------------------------------------------------------------
  99 // wxStatusBar95 class
 100 // ----------------------------------------------------------------------------
 101
 102 wxStatusBar95::wxStatusBar95()
 103 {
 104   SetParent(NULL);
 105   m_hWnd = 0;
 106   m_windowId = 0;
 107 }
 108
 109 bool wxStatusBar95::Create(wxWindow *parent,
 110                            wxWindowID id,
 111                            long style,
 112                            const wxString& name)
 113 {
 114     wxCHECK_MSG( parent, FALSE, wxT("status bar must have a parent") );
 115
 116     SetName(name);
 117     SetWindowStyleFlag(style);
 118     SetParent(parent);
 119
 120     parent->AddChild(this);
 121
 122     m_windowId = id == -1 ? NewControlId() : id;
 123
 124     DWORD wstyle = WS_CHILD | WS_VISIBLE;
 125
 126     // setting SBARS_SIZEGRIP is perfectly useless: it's always on by default
 127     // (at least in the version of comctl32.dll I'm using), and the only way to
 128     // turn it off is to use CCS_TOP style - as we position the status bar
 129     // manually anyhow (see DoMoveWindow), use CCS_TOP style if wxST_SIZEGRIP
 130     // is not given
 131     if ( !(style & wxST_SIZEGRIP) )
 132     {
 133         wstyle |= CCS_TOP;
 134     }
 135     else
 136     {
 137         // may be some versions of comctl32.dll do need it - anyhow, it won't
 138         // do any harm
 139         wstyle |= SBARS_SIZEGRIP;
 140     }
 141
 142     m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
 143                                         wxEmptyString,
 144                                         GetHwndOf(parent),
 145                                         m_windowId);
 146     if ( m_hWnd == 0 )
 147     {
 148         wxLogSysError(_("Failed to create a status bar."));
 149
 150         return FALSE;
 151     }
 152
 153     SetFieldsCount(1);
 154
 155     // we can't subclass this window as usual because the status bar window
 156     // proc processes WM_SIZE and WM_PAINT specially
 157     //  SubclassWin(m_hWnd);
 158
 159     // but we want to process the messages from it still, so do custom
 160     // subclassing here
 161     gs_wndprocStatBar = (WXFARPROC)GetWindowLong(GetHwnd(), GWL_WNDPROC);
 162     SetWindowLong(GetHwnd(), GWL_WNDPROC, (LONG)wxStatusBarProc);
 163     SetWindowLong(GetHwnd(), GWL_USERDATA, (LONG)this);
 164
 165     return TRUE;
 166 }
 167
 168 wxStatusBar95::~wxStatusBar95()
 169 {
 170     delete [] m_statusWidths;
 171 }
 172
 173 void wxStatusBar95::CopyFieldsWidth(const int widths[])
 174 {
 175   if (widths && !m_statusWidths)
 176     m_statusWidths = new int[m_nFields];
 177
 178   if ( widths != NULL ) {
 179     for ( int i = 0; i < m_nFields; i++ )
 180       m_statusWidths[i] = widths[i];
 181   }
 182   else {
 183     delete [] m_statusWidths;
 184     m_statusWidths = NULL;
 185   }
 186 }
 187
 188 void wxStatusBar95::SetFieldsCount(int nFields, const int *widths)
 189 {
 190   // this is Windows limitation
 191   wxASSERT_MSG( (nFields > 0) && (nFields < 255), _T("too many fields") );
 192
 193   m_nFields = nFields;
 194
 195   CopyFieldsWidth(widths);
 196   SetFieldsWidth();
 197 }
 198
 199 void wxStatusBar95::SetStatusWidths(int n, const int widths[])
 200 {
 201   wxASSERT_MSG( n == m_nFields, _T("field number mismatch") );
 202
 203   CopyFieldsWidth(widths);
 204   SetFieldsWidth();
 205 }
 206
 207 void wxStatusBar95::SetFieldsWidth()
 208 {
 209     if ( !m_nFields )
 210         return;
 211
 212     int aBorders[3];
 213     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 214
 215     int extraWidth = aBorders[2]; // space between fields
 216
 217     int *pWidths = new int[m_nFields];
 218
 219     int nWindowWidth, y;
 220     GetClientSize(&nWindowWidth, &y);
 221
 222     if ( m_statusWidths == NULL ) {
 223         // default: all fields have the same width
 224         int nWidth = nWindowWidth / m_nFields;
 225         for ( int i = 0; i < m_nFields; i++ )
 226             pWidths[i] = (i + 1) * nWidth;
 227     }
 228     else {
 229         // -1 doesn't mean the same thing for wxWindows and Win32, recalc
 230         int nTotalWidth = 0,
 231         nVarCount = 0,
 232         i;
 233         for ( i = 0; i < m_nFields; i++ ) {
 234             if ( m_statusWidths[i] == -1 )
 235                 nVarCount++;
 236             else
 237                 nTotalWidth += m_statusWidths[i] + extraWidth;
 238         }
 239
 240         if ( nVarCount == 0 ) {
 241             wxFAIL_MSG( _T("at least one field must be of variable width") );
 242
 243             nVarCount++;
 244         }
 245
 246         int nVarWidth = (nWindowWidth - nTotalWidth) / nVarCount;
 247
 248         // do fill the array
 249         int nCurPos = 0;
 250         for ( i = 0; i < m_nFields; i++ ) {
 251             if ( m_statusWidths[i] == -1 )
 252                 nCurPos += nVarWidth;
 253             else
 254                 nCurPos += m_statusWidths[i] + extraWidth;
 255             pWidths[i] = nCurPos;
 256         }
 257     }
 258
 259     if ( !StatusBar_SetParts(GetHwnd(), m_nFields, pWidths) ) {
 260         wxLogLastError(wxT("StatusBar_SetParts"));
 261     }
 262
 263     delete [] pWidths;
 264 }
 265
 266 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 267 {
 268     wxCHECK_RET( (nField >= 0) && (nField < m_nFields),
 269                  _T("invalid statusbar field index") );
 270
 271   if ( !StatusBar_SetText(GetHwnd(), nField, strText) ) {
 272     wxLogLastError(wxT("StatusBar_SetText"));
 273   }
 274 }
 275
 276 wxString wxStatusBar95::GetStatusText(int nField) const
 277 {
 278     wxCHECK_MSG( (nField >= 0) && (nField < m_nFields), wxEmptyString,
 279                  _T("invalid statusbar field index") );
 280
 281   wxString str;
 282   int len = StatusBar_GetTextLen(GetHwnd(), nField);
 283   if (len > 0)
 284   {
 285     StatusBar_GetText(GetHwnd(), nField, str.GetWriteBuf(len));
 286     str.UngetWriteBuf();
 287   }
 288   return str;
 289 }
 290
 291 int wxStatusBar95::GetBorderX() const
 292 {
 293     int aBorders[3];
 294     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 295
 296     return aBorders[0];
 297 }
 298
 299 int wxStatusBar95::GetBorderY() const
 300 {
 301     int aBorders[3];
 302     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 303
 304     return aBorders[1];
 305 }
 306
 307 void wxStatusBar95::SetMinHeight(int height)
 308 {
 309     SendMessage(GetHwnd(), SB_SETMINHEIGHT, height + 2*GetBorderY(), 0);
 310
 311     // have to send a (dummy) WM_SIZE to redraw it now
 312     SendMessage(GetHwnd(), WM_SIZE, 0, 0);
 313 }
 314
 315 bool wxStatusBar95::GetFieldRect(int i, wxRect& rect) const
 316 {
 317     wxCHECK_MSG( (i >= 0) && (i < m_nFields), FALSE,
 318                  _T("invalid statusbar field index") );
 319
 320     RECT r;
 321     if ( !::SendMessage(GetHwnd(), SB_GETRECT, i, (LPARAM)&r) )
 322     {
 323         wxLogLastError("SendMessage(SB_GETRECT)");
 324     }
 325
 326     wxCopyRECTToRect(r, rect);
 327
 328     return TRUE;
 329 }
 330
 331 void wxStatusBar95::DoMoveWindow(int x, int y, int width, int height)
 332 {
 333     // the status bar wnd proc must be forwarded the WM_SIZE message whenever
 334     // the stat bar position/size is changed because it normally positions the
 335     // control itself along bottom or top side of the parent window - failing
 336     // to do so will result in nasty visual effects
 337     FORWARD_WM_SIZE(GetHwnd(), SIZE_RESTORED, x, y, SendMessage);
 338
 339     // but now, when the standard status bar wnd proc did all it wanted to do,
 340     // move the status bar to its correct location - usually this call may be
 341     // omitted because for normal status bars (positioned along the bottom
 342     // edge) the position is already set correctly, but if the user wants to
 343     // position them in some exotic location, this is really needed
 344     wxWindow::DoMoveWindow(x, y, width, height);
 345
 346     // adjust fields widths to the new size
 347     SetFieldsWidth();
 348 }
 349
 350 #endif // __WIN95__ && wxUSE_NATIVE_STATUSBAR
 351