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 // 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 == -1 ? 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         // may be some versions of comctl32.dll do need it - anyhow, it won't
 100         // do any harm
 101         wstyle |= SBARS_SIZEGRIP;
 102     }
 103
 104     m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
 105                                         wxEmptyString,
 106                                         GetHwndOf(parent),
 107                                         m_windowId);
 108     if ( m_hWnd == 0 )
 109     {
 110         wxLogSysError(_("Failed to create a status bar."));
 111
 112         return FALSE;
 113     }
 114
 115     SetFieldsCount(1);
 116     SubclassWin(m_hWnd);
 117
 118     return TRUE;
 119 }
 120
 121 wxStatusBar95::~wxStatusBar95()
 122 {
 123 }
 124
 125 void wxStatusBar95::SetFieldsCount(int nFields, const int *widths)
 126 {
 127     // this is a Windows limitation
 128     wxASSERT_MSG( (nFields > 0) && (nFields < 255), _T("too many fields") );
 129
 130     wxStatusBarBase::SetFieldsCount(nFields, widths);
 131 }
 132
 133 void wxStatusBar95::SetStatusWidths(int n, const int widths[])
 134 {
 135     wxStatusBarBase::SetStatusWidths(n, widths);
 136
 137     SetFieldsWidth();
 138 }
 139
 140 void wxStatusBar95::SetFieldsWidth()
 141 {
 142     if ( !m_nFields )
 143         return;
 144
 145     int aBorders[3];
 146     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 147
 148     int extraWidth = aBorders[2]; // space between fields
 149
 150     wxArrayInt widthsAbs =
 151         CalculateAbsWidths(GetClientSize().x - extraWidth*(m_nFields - 1));
 152
 153     int *pWidths = new int[m_nFields];
 154
 155     int nCurPos = 0;
 156     for ( int i = 0; i < m_nFields; i++ ) {
 157         nCurPos += widthsAbs[i] + extraWidth;
 158         pWidths[i] = nCurPos;
 159     }
 160
 161     if ( !StatusBar_SetParts(GetHwnd(), m_nFields, pWidths) ) {
 162         wxLogLastError(wxT("StatusBar_SetParts"));
 163     }
 164
 165     delete [] pWidths;
 166 }
 167
 168 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 169 {
 170     wxCHECK_RET( (nField >= 0) && (nField < m_nFields),
 171                  _T("invalid statusbar field index") );
 172
 173     if ( !StatusBar_SetText(GetHwnd(), nField, strText) )
 174     {
 175         wxLogLastError(wxT("StatusBar_SetText"));
 176     }
 177 }
 178
 179 wxString wxStatusBar95::GetStatusText(int nField) const
 180 {
 181     wxCHECK_MSG( (nField >= 0) && (nField < m_nFields), wxEmptyString,
 182                  _T("invalid statusbar field index") );
 183
 184     wxString str;
 185     int len = StatusBar_GetTextLen(GetHwnd(), nField);
 186     if ( len > 0 )
 187     {
 188         StatusBar_GetText(GetHwnd(), nField, str.GetWriteBuf(len));
 189         str.UngetWriteBuf();
 190     }
 191
 192     return str;
 193 }
 194
 195 int wxStatusBar95::GetBorderX() const
 196 {
 197     int aBorders[3];
 198     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 199
 200     return aBorders[0];
 201 }
 202
 203 int wxStatusBar95::GetBorderY() const
 204 {
 205     int aBorders[3];
 206     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 207
 208     return aBorders[1];
 209 }
 210
 211 void wxStatusBar95::SetMinHeight(int height)
 212 {
 213     SendMessage(GetHwnd(), SB_SETMINHEIGHT, height + 2*GetBorderY(), 0);
 214
 215     // have to send a (dummy) WM_SIZE to redraw it now
 216     SendMessage(GetHwnd(), WM_SIZE, 0, 0);
 217 }
 218
 219 bool wxStatusBar95::GetFieldRect(int i, wxRect& rect) const
 220 {
 221     wxCHECK_MSG( (i >= 0) && (i < m_nFields), FALSE,
 222                  _T("invalid statusbar field index") );
 223
 224     RECT r;
 225     if ( !::SendMessage(GetHwnd(), SB_GETRECT, i, (LPARAM)&r) )
 226     {
 227         wxLogLastError(wxT("SendMessage(SB_GETRECT)"));
 228     }
 229
 230     wxCopyRECTToRect(r, rect);
 231
 232     return TRUE;
 233 }
 234
 235 void wxStatusBar95::DoMoveWindow(int x, int y, int width, int height)
 236 {
 237     // the status bar wnd proc must be forwarded the WM_SIZE message whenever
 238     // the stat bar position/size is changed because it normally positions the
 239     // control itself along bottom or top side of the parent window - failing
 240     // to do so will result in nasty visual effects
 241     FORWARD_WM_SIZE(GetHwnd(), SIZE_RESTORED, x, y, SendMessage);
 242
 243     // but now, when the standard status bar wnd proc did all it wanted to do,
 244     // move the status bar to its correct location - usually this call may be
 245     // omitted because for normal status bars (positioned along the bottom
 246     // edge) the position is already set correctly, but if the user wants to
 247     // position them in some exotic location, this is really needed
 248     wxWindow::DoMoveWindow(x, y, width, height);
 249
 250     // adjust fields widths to the new size
 251     SetFieldsWidth();
 252
 253     // we have to trigger wxSizeEvent if there are children window in status
 254     // bar because GetFieldRect returned incorrect (not updated) values up to
 255     // here, which almost certainly resulted in incorrectly redrawn statusbar
 256     if ( m_children.GetCount() > 0 )
 257     {
 258         wxSizeEvent event(GetClientSize(), m_windowId);
 259         event.SetEventObject(this);
 260         GetEventHandler()->ProcessEvent(event);
 261     }
 262 }
 263
 264 #endif // __WIN95__ && wxUSE_NATIVE_STATUSBAR
 265