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(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__)) && !defined(__CYGWIN10__))
  40     #include <commctrl.h>
  41 #endif
  42
  43 // ----------------------------------------------------------------------------
  44 // wxWindows macros
  45 // ----------------------------------------------------------------------------
  46
  47 IMPLEMENT_DYNAMIC_CLASS(wxStatusBar95, wxWindow);
  48
  49 // ----------------------------------------------------------------------------
  50 // macros
  51 // ----------------------------------------------------------------------------
  52
  53 // windowsx.h and commctrl.h don't define those, so we do it here
  54 #define StatusBar_SetParts(h, n, w) SendMessage(h, SB_SETPARTS, (WPARAM)n, (LPARAM)w)
  55 #define StatusBar_SetText(h, n, t)  SendMessage(h, SB_SETTEXT, (WPARAM)n, (LPARAM)(LPCTSTR)t)
  56 #define StatusBar_GetTextLen(h, n)  LOWORD(SendMessage(h, SB_GETTEXTLENGTH, (WPARAM)n, 0))
  57 #define StatusBar_GetText(h, n, s)  LOWORD(SendMessage(h, SB_GETTEXT, (WPARAM)n, (LPARAM)(LPTSTR)s))
  58
  59 // ============================================================================
  60 // implementation
  61 // ============================================================================
  62
  63 // ----------------------------------------------------------------------------
  64 // wxStatusBar95 class
  65 // ----------------------------------------------------------------------------
  66
  67 wxStatusBar95::wxStatusBar95()
  68 {
  69     SetParent(NULL);
  70     m_hWnd = 0;
  71     m_windowId = 0;
  72 }
  73
  74 bool wxStatusBar95::Create(wxWindow *parent,
  75                            wxWindowID id,
  76                            long style,
  77                            const wxString& name)
  78 {
  79     wxCHECK_MSG( parent, FALSE, wxT("status bar must have a parent") );
  80
  81     SetName(name);
  82     SetWindowStyleFlag(style);
  83     SetParent(parent);
  84
  85     parent->AddChild(this);
  86
  87     m_windowId = id == -1 ? NewControlId() : id;
  88
  89     DWORD wstyle = WS_CHILD | WS_VISIBLE;
  90
  91     if ( style & wxCLIP_SIBLINGS )
  92         wstyle |= WS_CLIPSIBLINGS;
  93
  94     // setting SBARS_SIZEGRIP is perfectly useless: it's always on by default
  95     // (at least in the version of comctl32.dll I'm using), and the only way to
  96     // turn it off is to use CCS_TOP style - as we position the status bar
  97     // manually anyhow (see DoMoveWindow), use CCS_TOP style if wxST_SIZEGRIP
  98     // is not given
  99     if ( !(style & wxST_SIZEGRIP) )
 100     {
 101         wstyle |= CCS_TOP;
 102     }
 103     else
 104     {
 105         // may be some versions of comctl32.dll do need it - anyhow, it won't
 106         // do any harm
 107         wstyle |= SBARS_SIZEGRIP;
 108     }
 109
 110     m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
 111                                         wxEmptyString,
 112                                         GetHwndOf(parent),
 113                                         m_windowId);
 114     if ( m_hWnd == 0 )
 115     {
 116         wxLogSysError(_("Failed to create a status bar."));
 117
 118         return FALSE;
 119     }
 120
 121     SetFieldsCount(1);
 122     SubclassWin(m_hWnd);
 123
 124     return TRUE;
 125 }
 126
 127 wxStatusBar95::~wxStatusBar95()
 128 {
 129 }
 130
 131 void wxStatusBar95::CopyFieldsWidth(const int widths[])
 132 {
 133     if (widths && !m_statusWidths)
 134         m_statusWidths = new int[m_nFields];
 135
 136     if ( widths != NULL )
 137     {
 138         for ( int i = 0; i < m_nFields; i++ )
 139             m_statusWidths[i] = widths[i];
 140     }
 141     else // no widths
 142     {
 143         delete [] m_statusWidths;
 144         m_statusWidths = NULL;
 145     }
 146 }
 147
 148 void wxStatusBar95::SetFieldsCount(int nFields, const int *widths)
 149 {
 150     // this is a Windows limitation
 151     wxASSERT_MSG( (nFields > 0) && (nFields < 255), _T("too many fields") );
 152
 153     m_nFields = nFields;
 154
 155     CopyFieldsWidth(widths);
 156     SetFieldsWidth();
 157 }
 158
 159 void wxStatusBar95::SetStatusWidths(int WXUNUSED_UNLESS_DEBUG(n), const int widths[])
 160 {
 161     wxASSERT_MSG( n == m_nFields, _T("field number mismatch") );
 162
 163     CopyFieldsWidth(widths);
 164     SetFieldsWidth();
 165 }
 166
 167 void wxStatusBar95::SetFieldsWidth()
 168 {
 169     if ( !m_nFields )
 170         return;
 171
 172     int aBorders[3];
 173     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 174
 175     int extraWidth = aBorders[2]; // space between fields
 176
 177     int *pWidths = new int[m_nFields];
 178
 179     int nWindowWidth, y;
 180     GetClientSize(&nWindowWidth, &y);
 181
 182     if ( m_statusWidths == NULL ) {
 183         // default: all fields have the same width
 184         int nWidth = nWindowWidth / m_nFields;
 185         for ( int i = 0; i < m_nFields; i++ )
 186             pWidths[i] = (i + 1) * nWidth;
 187     }
 188     else {
 189         // -1 doesn't mean the same thing for wxWindows and Win32, recalc
 190         int nTotalWidth = 0,
 191         nVarCount = 0,
 192         i;
 193         for ( i = 0; i < m_nFields; i++ ) {
 194             if ( m_statusWidths[i] == -1 )
 195                 nVarCount++;
 196             else
 197                 nTotalWidth += m_statusWidths[i] + extraWidth;
 198         }
 199
 200         if ( nVarCount == 0 ) {
 201             wxFAIL_MSG( _T("at least one field must be of variable width") );
 202
 203             nVarCount++;
 204         }
 205
 206         int nVarWidth = (nWindowWidth - nTotalWidth) / nVarCount;
 207
 208         // do fill the array
 209         int nCurPos = 0;
 210         for ( i = 0; i < m_nFields; i++ ) {
 211             if ( m_statusWidths[i] == -1 )
 212                 nCurPos += nVarWidth;
 213             else
 214                 nCurPos += m_statusWidths[i] + extraWidth;
 215             pWidths[i] = nCurPos;
 216         }
 217     }
 218
 219     if ( !StatusBar_SetParts(GetHwnd(), m_nFields, pWidths) ) {
 220         wxLogLastError(wxT("StatusBar_SetParts"));
 221     }
 222
 223     delete [] pWidths;
 224 }
 225
 226 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 227 {
 228     wxCHECK_RET( (nField >= 0) && (nField < m_nFields),
 229                  _T("invalid statusbar field index") );
 230
 231     if ( !StatusBar_SetText(GetHwnd(), nField, strText) )
 232     {
 233         wxLogLastError(wxT("StatusBar_SetText"));
 234     }
 235 }
 236
 237 wxString wxStatusBar95::GetStatusText(int nField) const
 238 {
 239     wxCHECK_MSG( (nField >= 0) && (nField < m_nFields), wxEmptyString,
 240                  _T("invalid statusbar field index") );
 241
 242     wxString str;
 243     int len = StatusBar_GetTextLen(GetHwnd(), nField);
 244     if ( len > 0 )
 245     {
 246         StatusBar_GetText(GetHwnd(), nField, str.GetWriteBuf(len));
 247         str.UngetWriteBuf();
 248     }
 249
 250     return str;
 251 }
 252
 253 int wxStatusBar95::GetBorderX() const
 254 {
 255     int aBorders[3];
 256     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 257
 258     return aBorders[0];
 259 }
 260
 261 int wxStatusBar95::GetBorderY() const
 262 {
 263     int aBorders[3];
 264     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 265
 266     return aBorders[1];
 267 }
 268
 269 void wxStatusBar95::SetMinHeight(int height)
 270 {
 271     SendMessage(GetHwnd(), SB_SETMINHEIGHT, height + 2*GetBorderY(), 0);
 272
 273     // have to send a (dummy) WM_SIZE to redraw it now
 274     SendMessage(GetHwnd(), WM_SIZE, 0, 0);
 275 }
 276
 277 bool wxStatusBar95::GetFieldRect(int i, wxRect& rect) const
 278 {
 279     wxCHECK_MSG( (i >= 0) && (i < m_nFields), FALSE,
 280                  _T("invalid statusbar field index") );
 281
 282     RECT r;
 283     if ( !::SendMessage(GetHwnd(), SB_GETRECT, i, (LPARAM)&r) )
 284     {
 285         wxLogLastError(wxT("SendMessage(SB_GETRECT)"));
 286     }
 287
 288     wxCopyRECTToRect(r, rect);
 289
 290     return TRUE;
 291 }
 292
 293 void wxStatusBar95::DoMoveWindow(int x, int y, int width, int height)
 294 {
 295     // the status bar wnd proc must be forwarded the WM_SIZE message whenever
 296     // the stat bar position/size is changed because it normally positions the
 297     // control itself along bottom or top side of the parent window - failing
 298     // to do so will result in nasty visual effects
 299     FORWARD_WM_SIZE(GetHwnd(), SIZE_RESTORED, x, y, SendMessage);
 300
 301     // but now, when the standard status bar wnd proc did all it wanted to do,
 302     // move the status bar to its correct location - usually this call may be
 303     // omitted because for normal status bars (positioned along the bottom
 304     // edge) the position is already set correctly, but if the user wants to
 305     // position them in some exotic location, this is really needed
 306     wxWindow::DoMoveWindow(x, y, width, height);
 307
 308     // adjust fields widths to the new size
 309     SetFieldsWidth();
 310
 311     // we have to trigger wxSizeEvent if there are children window in status
 312     // bar because GetFieldRect returned incorrect (not updated) values up to
 313     // here, which almost certainly resulted in incorrectly redrawn statusbar
 314     if ( m_children.GetCount() > 0 )
 315     {
 316         wxSizeEvent event(GetClientSize(), m_windowId);
 317         event.SetEventObject(this);
 318         GetEventHandler()->ProcessEvent(event);
 319     }
 320 }
 321
 322 #endif // __WIN95__ && wxUSE_NATIVE_STATUSBAR
 323