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 licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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 wxUSE_STATUSBAR && 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(__CYGWIN10__))
  40     #include <commctrl.h>
  41 #endif
  42
  43 // ----------------------------------------------------------------------------
  44 // macros
  45 // ----------------------------------------------------------------------------
  46
  47 // windowsx.h and commctrl.h don't define those, so we do it here
  48 #define StatusBar_SetParts(h, n, w) SendMessage(h, SB_SETPARTS, (WPARAM)n, (LPARAM)w)
  49 #define StatusBar_SetText(h, n, t)  SendMessage(h, SB_SETTEXT, (WPARAM)n, (LPARAM)(LPCTSTR)t)
  50 #define StatusBar_GetTextLen(h, n)  LOWORD(SendMessage(h, SB_GETTEXTLENGTH, (WPARAM)n, 0))
  51 #define StatusBar_GetText(h, n, s)  LOWORD(SendMessage(h, SB_GETTEXT, (WPARAM)n, (LPARAM)(LPTSTR)s))
  52
  53 // ============================================================================
  54 // implementation
  55 // ============================================================================
  56
  57 // ----------------------------------------------------------------------------
  58 // wxStatusBar95 class
  59 // ----------------------------------------------------------------------------
  60
  61 wxStatusBar95::wxStatusBar95()
  62 {
  63     SetParent(NULL);
  64     m_hWnd = 0;
  65     m_windowId = 0;
  66 }
  67
  68 bool wxStatusBar95::Create(wxWindow *parent,
  69                            wxWindowID id,
  70                            long style,
  71                            const wxString& name)
  72 {
  73     wxCHECK_MSG( parent, false, wxT("status bar must have a parent") );
  74
  75     SetName(name);
  76     SetWindowStyleFlag(style);
  77     SetParent(parent);
  78
  79     parent->AddChild(this);
  80
  81     m_windowId = id == wxID_ANY ? NewControlId() : id;
  82
  83     DWORD wstyle = WS_CHILD | WS_VISIBLE;
  84
  85     if ( style & wxCLIP_SIBLINGS )
  86         wstyle |= WS_CLIPSIBLINGS;
  87
  88     // setting SBARS_SIZEGRIP is perfectly useless: it's always on by default
  89     // (at least in the version of comctl32.dll I'm using), and the only way to
  90     // turn it off is to use CCS_TOP style - as we position the status bar
  91     // manually anyhow (see DoMoveWindow), use CCS_TOP style if wxST_SIZEGRIP
  92     // is not given
  93     if ( !(style & wxST_SIZEGRIP) )
  94     {
  95         wstyle |= CCS_TOP;
  96     }
  97     else
  98     {
  99 #ifndef __WXWINCE__
 100         // may be some versions of comctl32.dll do need it - anyhow, it won't
 101         // do any harm
 102         wstyle |= SBARS_SIZEGRIP;
 103 #endif
 104     }
 105
 106     m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
 107                                         wxEmptyString,
 108                                         GetHwndOf(parent),
 109                                         m_windowId);
 110     if ( m_hWnd == 0 )
 111     {
 112         wxLogSysError(_("Failed to create a status bar."));
 113
 114         return false;
 115     }
 116
 117     SetFieldsCount(1);
 118     SubclassWin(m_hWnd);
 119     InheritAttributes();
 120
 121     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_MENUBAR));
 122
 123     // we must refresh the frame size when the statusbar is created, because
 124     // its client area might change
 125     wxFrame *frame = wxDynamicCast(GetParent(), wxFrame);
 126     if ( frame )
 127     {
 128         frame->SendSizeEvent();
 129     }
 130
 131     return true;
 132 }
 133
 134 wxStatusBar95::~wxStatusBar95()
 135 {
 136     // we must refresh the frame size when the statusbar is deleted but the
 137     // frame is not - otherwise statusbar leaves a hole in the place it used to
 138     // occupy
 139     wxFrame *frame = wxDynamicCast(GetParent(), wxFrame);
 140     if ( frame && !frame->IsBeingDeleted() )
 141     {
 142         frame->SendSizeEvent();
 143     }
 144 }
 145
 146 void wxStatusBar95::SetFieldsCount(int nFields, const int *widths)
 147 {
 148     // this is a Windows limitation
 149     wxASSERT_MSG( (nFields > 0) && (nFields < 255), _T("too many fields") );
 150
 151     wxStatusBarBase::SetFieldsCount(nFields, widths);
 152
 153     SetFieldsWidth();
 154 }
 155
 156 void wxStatusBar95::SetStatusWidths(int n, const int widths[])
 157 {
 158     wxStatusBarBase::SetStatusWidths(n, widths);
 159
 160     SetFieldsWidth();
 161 }
 162
 163 void wxStatusBar95::SetFieldsWidth()
 164 {
 165     if ( !m_nFields )
 166         return;
 167
 168     int aBorders[3];
 169     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 170
 171     int extraWidth = aBorders[2]; // space between fields
 172
 173     wxArrayInt widthsAbs =
 174         CalculateAbsWidths(GetClientSize().x - extraWidth*(m_nFields - 1));
 175
 176     int *pWidths = new int[m_nFields];
 177
 178     int nCurPos = 0;
 179     for ( int i = 0; i < m_nFields; i++ ) {
 180         nCurPos += widthsAbs[i] + extraWidth;
 181         pWidths[i] = nCurPos;
 182     }
 183
 184     if ( !StatusBar_SetParts(GetHwnd(), m_nFields, pWidths) ) {
 185         wxLogLastError(wxT("StatusBar_SetParts"));
 186     }
 187
 188     delete [] pWidths;
 189 }
 190
 191 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 192 {
 193     wxCHECK_RET( (nField >= 0) && (nField < m_nFields),
 194                  _T("invalid statusbar field index") );
 195
 196     // Get field style, if any
 197     int style;
 198     if (m_statusStyles)
 199     {
 200         switch(m_statusStyles[nField])
 201         {
 202         case wxSB_RAISED:
 203             style = SBT_POPOUT;
 204             break;
 205         case wxSB_FLAT:
 206             style = SBT_NOBORDERS;
 207             break;
 208         case wxSB_NORMAL:
 209         default:
 210             style = 0;
 211             break;
 212         }
 213     }
 214     else
 215         style = 0;
 216
 217     // Pass both field number and style. MSDN library doesn't mention
 218     // that nField and style have to be 'ORed'
 219     if ( !StatusBar_SetText(GetHwnd(), nField | style, strText) )
 220     {
 221         wxLogLastError(wxT("StatusBar_SetText"));
 222     }
 223 }
 224
 225 wxString wxStatusBar95::GetStatusText(int nField) const
 226 {
 227     wxCHECK_MSG( (nField >= 0) && (nField < m_nFields), wxEmptyString,
 228                  _T("invalid statusbar field index") );
 229
 230     wxString str;
 231     int len = StatusBar_GetTextLen(GetHwnd(), nField);
 232     if ( len > 0 )
 233     {
 234         StatusBar_GetText(GetHwnd(), nField, wxStringBuffer(str, len));
 235     }
 236
 237     return str;
 238 }
 239
 240 int wxStatusBar95::GetBorderX() const
 241 {
 242     int aBorders[3];
 243     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 244
 245     return aBorders[0];
 246 }
 247
 248 int wxStatusBar95::GetBorderY() const
 249 {
 250     int aBorders[3];
 251     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 252
 253     return aBorders[1];
 254 }
 255
 256 void wxStatusBar95::SetMinHeight(int height)
 257 {
 258     SendMessage(GetHwnd(), SB_SETMINHEIGHT, height + 2*GetBorderY(), 0);
 259
 260     // have to send a (dummy) WM_SIZE to redraw it now
 261     SendMessage(GetHwnd(), WM_SIZE, 0, 0);
 262 }
 263
 264 bool wxStatusBar95::GetFieldRect(int i, wxRect& rect) const
 265 {
 266     wxCHECK_MSG( (i >= 0) && (i < m_nFields), false,
 267                  _T("invalid statusbar field index") );
 268
 269     RECT r;
 270     if ( !::SendMessage(GetHwnd(), SB_GETRECT, i, (LPARAM)&r) )
 271     {
 272         wxLogLastError(wxT("SendMessage(SB_GETRECT)"));
 273     }
 274
 275     wxCopyRECTToRect(r, rect);
 276
 277     return true;
 278 }
 279
 280 void wxStatusBar95::DoMoveWindow(int x, int y, int width, int height)
 281 {
 282     // the status bar wnd proc must be forwarded the WM_SIZE message whenever
 283     // the stat bar position/size is changed because it normally positions the
 284     // control itself along bottom or top side of the parent window - failing
 285     // to do so will result in nasty visual effects
 286     FORWARD_WM_SIZE(GetHwnd(), SIZE_RESTORED, x, y, SendMessage);
 287
 288     // but now, when the standard status bar wnd proc did all it wanted to do,
 289     // move the status bar to its correct location - usually this call may be
 290     // omitted because for normal status bars (positioned along the bottom
 291     // edge) the position is already set correctly, but if the user wants to
 292     // position them in some exotic location, this is really needed
 293     wxWindowMSW::DoMoveWindow(x, y, width, height);
 294
 295     // adjust fields widths to the new size
 296     SetFieldsWidth();
 297
 298     // we have to trigger wxSizeEvent if there are children window in status
 299     // bar because GetFieldRect returned incorrect (not updated) values up to
 300     // here, which almost certainly resulted in incorrectly redrawn statusbar
 301     if ( m_children.GetCount() > 0 )
 302     {
 303         wxSizeEvent event(GetClientSize(), m_windowId);
 304         event.SetEventObject(this);
 305         GetEventHandler()->ProcessEvent(event);
 306     }
 307 }
 308
 309 void wxStatusBar95::SetStatusStyles(int n, const int styles[])
 310 {
 311     wxStatusBarBase::SetStatusStyles(n, styles);
 312
 313     if (n != m_nFields)
 314         return;
 315
 316     for (int i = 0; i < n; i++)
 317     {
 318         int style;
 319         switch(styles[i])
 320         {
 321         case wxSB_RAISED:
 322             style = SBT_POPOUT;
 323             break;
 324         case wxSB_FLAT:
 325             style = SBT_NOBORDERS;
 326             break;
 327         case wxSB_NORMAL:
 328         default:
 329             style = 0;
 330             break;
 331         }
 332         // The SB_SETTEXT message is both used to set the field's text as well as
 333         // the fields' styles. MSDN library doesn't mention
 334         // that nField and style have to be 'ORed'
 335         wxString text = GetStatusText(i);
 336         if (!StatusBar_SetText(GetHwnd(), style | i, text))
 337         {
 338             wxLogLastError(wxT("StatusBar_SetText"));
 339         }
 340     }
 341 }
 342
 343 #endif // __WIN95__ && wxUSE_NATIVE_STATUSBAR
 344