src/msw/statbr95.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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 // for compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16   #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20   #include "wx/setup.h"
  21   #include "wx/frame.h"
  22   #include "wx/settings.h"
  23   #include "wx/dcclient.h"
  24 #endif
  25
  26 #if wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR
  27
  28 #include "wx/intl.h"
  29 #include "wx/log.h"
  30 #include "wx/statusbr.h"
  31
  32 #include "wx/msw/private.h"
  33 #include <windowsx.h>
  34
  35 // include <commctrl.h> "properly"
  36 #include "wx/msw/wrapcctl.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // macros
  40 // ----------------------------------------------------------------------------
  41
  42 // windowsx.h and commctrl.h don't define those, so we do it here
  43 #define StatusBar_SetParts(h, n, w) SendMessage(h, SB_SETPARTS, (WPARAM)n, (LPARAM)w)
  44 #define StatusBar_SetText(h, n, t)  SendMessage(h, SB_SETTEXT, (WPARAM)n, (LPARAM)(LPCTSTR)t)
  45 #define StatusBar_GetTextLen(h, n)  LOWORD(SendMessage(h, SB_GETTEXTLENGTH, (WPARAM)n, 0))
  46 #define StatusBar_GetText(h, n, s)  LOWORD(SendMessage(h, SB_GETTEXT, (WPARAM)n, (LPARAM)(LPTSTR)s))
  47
  48 // ============================================================================
  49 // implementation
  50 // ============================================================================
  51
  52 // ----------------------------------------------------------------------------
  53 // wxStatusBar95 class
  54 // ----------------------------------------------------------------------------
  55
  56 wxStatusBar95::wxStatusBar95()
  57 {
  58     SetParent(NULL);
  59     m_hWnd = 0;
  60     m_windowId = 0;
  61 }
  62
  63 bool wxStatusBar95::Create(wxWindow *parent,
  64                            wxWindowID id,
  65                            long style,
  66                            const wxString& name)
  67 {
  68     wxCHECK_MSG( parent, false, wxT("status bar must have a parent") );
  69
  70     SetName(name);
  71     SetWindowStyleFlag(style);
  72     SetParent(parent);
  73
  74     parent->AddChild(this);
  75
  76     m_windowId = id == wxID_ANY ? NewControlId() : id;
  77
  78     DWORD wstyle = WS_CHILD | WS_VISIBLE;
  79
  80     if ( style & wxCLIP_SIBLINGS )
  81         wstyle |= WS_CLIPSIBLINGS;
  82
  83     // setting SBARS_SIZEGRIP is perfectly useless: it's always on by default
  84     // (at least in the version of comctl32.dll I'm using), and the only way to
  85     // turn it off is to use CCS_TOP style - as we position the status bar
  86     // manually anyhow (see DoMoveWindow), use CCS_TOP style if wxST_SIZEGRIP
  87     // is not given
  88     if ( !(style & wxST_SIZEGRIP) )
  89     {
  90         wstyle |= CCS_TOP;
  91     }
  92     else
  93     {
  94 #ifndef __WXWINCE__
  95         // may be some versions of comctl32.dll do need it - anyhow, it won't
  96         // do any harm
  97         wstyle |= SBARS_SIZEGRIP;
  98 #endif
  99     }
 100
 101     m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
 102                                         wxEmptyString,
 103                                         GetHwndOf(parent),
 104                                         m_windowId);
 105     if ( m_hWnd == 0 )
 106     {
 107         wxLogSysError(_("Failed to create a status bar."));
 108
 109         return false;
 110     }
 111
 112     SetFieldsCount(1);
 113     SubclassWin(m_hWnd);
 114     InheritAttributes();
 115
 116     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_MENUBAR));
 117
 118     // we must refresh the frame size when the statusbar is created, because
 119     // its client area might change
 120     wxFrame *frame = wxDynamicCast(GetParent(), wxFrame);
 121     if ( frame )
 122     {
 123         frame->SendSizeEvent();
 124     }
 125
 126     return true;
 127 }
 128
 129 wxStatusBar95::~wxStatusBar95()
 130 {
 131     // we must refresh the frame size when the statusbar is deleted but the
 132     // frame is not - otherwise statusbar leaves a hole in the place it used to
 133     // occupy
 134     wxFrame *frame = wxDynamicCast(GetParent(), wxFrame);
 135     if ( frame && !frame->IsBeingDeleted() )
 136     {
 137         frame->SendSizeEvent();
 138     }
 139 }
 140
 141 void wxStatusBar95::SetFieldsCount(int nFields, const int *widths)
 142 {
 143     // this is a Windows limitation
 144     wxASSERT_MSG( (nFields > 0) && (nFields < 255), _T("too many fields") );
 145
 146     wxStatusBarBase::SetFieldsCount(nFields, widths);
 147
 148     SetFieldsWidth();
 149 }
 150
 151 void wxStatusBar95::SetStatusWidths(int n, const int widths[])
 152 {
 153     wxStatusBarBase::SetStatusWidths(n, widths);
 154
 155     SetFieldsWidth();
 156 }
 157
 158 void wxStatusBar95::SetFieldsWidth()
 159 {
 160     if ( !m_nFields )
 161         return;
 162
 163     int aBorders[3];
 164     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 165
 166     int extraWidth = aBorders[2]; // space between fields
 167
 168     wxArrayInt widthsAbs =
 169         CalculateAbsWidths(GetClientSize().x - extraWidth*(m_nFields - 1));
 170
 171     int *pWidths = new int[m_nFields];
 172
 173     int nCurPos = 0;
 174     for ( int i = 0; i < m_nFields; i++ ) {
 175         nCurPos += widthsAbs[i] + extraWidth;
 176         pWidths[i] = nCurPos;
 177     }
 178
 179     if ( !StatusBar_SetParts(GetHwnd(), m_nFields, pWidths) ) {
 180         wxLogLastError(wxT("StatusBar_SetParts"));
 181     }
 182
 183     delete [] pWidths;
 184 }
 185
 186 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 187 {
 188     wxCHECK_RET( (nField >= 0) && (nField < m_nFields),
 189                  _T("invalid statusbar field index") );
 190
 191     // Get field style, if any
 192     int style;
 193     if (m_statusStyles)
 194     {
 195         switch(m_statusStyles[nField])
 196         {
 197         case wxSB_RAISED:
 198             style = SBT_POPOUT;
 199             break;
 200         case wxSB_FLAT:
 201             style = SBT_NOBORDERS;
 202             break;
 203         case wxSB_NORMAL:
 204         default:
 205             style = 0;
 206             break;
 207         }
 208     }
 209     else
 210         style = 0;
 211
 212     // Pass both field number and style. MSDN library doesn't mention
 213     // that nField and style have to be 'ORed'
 214     if ( !StatusBar_SetText(GetHwnd(), nField | style, strText) )
 215     {
 216         wxLogLastError(wxT("StatusBar_SetText"));
 217     }
 218 }
 219
 220 wxString wxStatusBar95::GetStatusText(int nField) const
 221 {
 222     wxCHECK_MSG( (nField >= 0) && (nField < m_nFields), wxEmptyString,
 223                  _T("invalid statusbar field index") );
 224
 225     wxString str;
 226     int len = StatusBar_GetTextLen(GetHwnd(), nField);
 227     if ( len > 0 )
 228     {
 229         StatusBar_GetText(GetHwnd(), nField, wxStringBuffer(str, len));
 230     }
 231
 232     return str;
 233 }
 234
 235 int wxStatusBar95::GetBorderX() const
 236 {
 237     int aBorders[3];
 238     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 239
 240     return aBorders[0];
 241 }
 242
 243 int wxStatusBar95::GetBorderY() const
 244 {
 245     int aBorders[3];
 246     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 247
 248     return aBorders[1];
 249 }
 250
 251 void wxStatusBar95::SetMinHeight(int height)
 252 {
 253     SendMessage(GetHwnd(), SB_SETMINHEIGHT, height + 2*GetBorderY(), 0);
 254
 255     // have to send a (dummy) WM_SIZE to redraw it now
 256     SendMessage(GetHwnd(), WM_SIZE, 0, 0);
 257 }
 258
 259 bool wxStatusBar95::GetFieldRect(int i, wxRect& rect) const
 260 {
 261     wxCHECK_MSG( (i >= 0) && (i < m_nFields), false,
 262                  _T("invalid statusbar field index") );
 263
 264     RECT r;
 265     if ( !::SendMessage(GetHwnd(), SB_GETRECT, i, (LPARAM)&r) )
 266     {
 267         wxLogLastError(wxT("SendMessage(SB_GETRECT)"));
 268     }
 269
 270     wxCopyRECTToRect(r, rect);
 271
 272     return true;
 273 }
 274
 275 #ifndef SWP_NOSENDCHANGING
 276 #define SWP_NOSENDCHANGING 0
 277 #endif
 278
 279 void wxStatusBar95::DoMoveWindow(int x, int y, int width, int height)
 280 {
 281     if ( GetParent()->IsSizeDeferred() )
 282     {
 283         wxWindowMSW::DoMoveWindow(x, y, width, height);
 284     }
 285     else
 286     {
 287         // parent pos/size isn't deferred so do it now but don't send
 288         // WM_WINDOWPOSCHANGING since we don't want to change pos/size later
 289         ::SetWindowPos(GetHwnd(), NULL, x, y, width, height,
 290                        SWP_NOZORDER | SWP_NOSENDCHANGING);
 291     }
 292
 293     // adjust fields widths to the new size
 294     SetFieldsWidth();
 295
 296     // we have to trigger wxSizeEvent if there are children window in status
 297     // bar because GetFieldRect returned incorrect (not updated) values up to
 298     // here, which almost certainly resulted in incorrectly redrawn statusbar
 299     if ( m_children.GetCount() > 0 )
 300     {
 301         wxSizeEvent event(GetClientSize(), m_windowId);
 302         event.SetEventObject(this);
 303         GetEventHandler()->ProcessEvent(event);
 304     }
 305 }
 306
 307 void wxStatusBar95::SetStatusStyles(int n, const int styles[])
 308 {
 309     wxStatusBarBase::SetStatusStyles(n, styles);
 310
 311     if (n != m_nFields)
 312         return;
 313
 314     for (int i = 0; i < n; i++)
 315     {
 316         int style;
 317         switch(styles[i])
 318         {
 319         case wxSB_RAISED:
 320             style = SBT_POPOUT;
 321             break;
 322         case wxSB_FLAT:
 323             style = SBT_NOBORDERS;
 324             break;
 325         case wxSB_NORMAL:
 326         default:
 327             style = 0;
 328             break;
 329         }
 330         // The SB_SETTEXT message is both used to set the field's text as well as
 331         // the fields' styles. MSDN library doesn't mention
 332         // that nField and style have to be 'ORed'
 333         wxString text = GetStatusText(i);
 334         if (!StatusBar_SetText(GetHwnd(), style | i, text))
 335         {
 336             wxLogLastError(wxT("StatusBar_SetText"));
 337         }
 338     }
 339 }
 340
 341 WXLRESULT
 342 wxStatusBar95::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 343 {
 344 #ifndef __WXWINCE__
 345     if ( nMsg == WM_WINDOWPOSCHANGING )
 346     {
 347         WINDOWPOS *lpPos = (WINDOWPOS *)lParam;
 348         int x, y, w, h;
 349         GetPosition(&x, &y);
 350         GetSize(&w, &h);
 351
 352         // we need real window coords and not wx client coords
 353         AdjustForParentClientOrigin(x, y);
 354
 355         lpPos->x  = x;
 356         lpPos->y  = y;
 357         lpPos->cx = w;
 358         lpPos->cy = h;
 359
 360         return 0;
 361     }
 362
 363     if ( nMsg == WM_NCLBUTTONDOWN )
 364     {
 365         // if hit-test is on gripper then send message to TLW to begin
 366         // resizing. It is possible to send this message to any window.
 367         if ( wParam == HTBOTTOMRIGHT )
 368         {
 369             wxWindow *win;
 370
 371             for ( win = GetParent(); win; win = win->GetParent() )
 372             {
 373                 if ( win->IsTopLevel() )
 374                 {
 375                     SendMessage(GetHwndOf(win), WM_NCLBUTTONDOWN,
 376                                 wParam, lParam);
 377
 378                     return 0;
 379                 }
 380             }
 381         }
 382     }
 383 #endif
 384
 385     return wxStatusBarBase::MSWWindowProc(nMsg, wParam, lParam);
 386 }
 387
 388 #endif // wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR