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 == -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 #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
 120     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_MENUBAR));
 121
 122     return TRUE;
 123 }
 124
 125 wxStatusBar95::~wxStatusBar95()
 126 {
 127 }
 128
 129 void wxStatusBar95::SetFieldsCount(int nFields, const int *widths)
 130 {
 131     // this is a Windows limitation
 132     wxASSERT_MSG( (nFields > 0) && (nFields < 255), _T("too many fields") );
 133
 134     wxStatusBarBase::SetFieldsCount(nFields, widths);
 135
 136     SetFieldsWidth();
 137 }
 138
 139 void wxStatusBar95::SetStatusWidths(int n, const int widths[])
 140 {
 141     wxStatusBarBase::SetStatusWidths(n, widths);
 142
 143     SetFieldsWidth();
 144 }
 145
 146 void wxStatusBar95::SetFieldsWidth()
 147 {
 148     if ( !m_nFields )
 149         return;
 150
 151     int aBorders[3];
 152     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 153
 154     int extraWidth = aBorders[2]; // space between fields
 155
 156     wxArrayInt widthsAbs =
 157         CalculateAbsWidths(GetClientSize().x - extraWidth*(m_nFields - 1));
 158
 159     int *pWidths = new int[m_nFields];
 160
 161     int nCurPos = 0;
 162     for ( int i = 0; i < m_nFields; i++ ) {
 163         nCurPos += widthsAbs[i] + extraWidth;
 164         pWidths[i] = nCurPos;
 165     }
 166
 167     if ( !StatusBar_SetParts(GetHwnd(), m_nFields, pWidths) ) {
 168         wxLogLastError(wxT("StatusBar_SetParts"));
 169     }
 170
 171     delete [] pWidths;
 172 }
 173
 174 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 175 {
 176     wxCHECK_RET( (nField >= 0) && (nField < m_nFields),
 177                  _T("invalid statusbar field index") );
 178
 179     if ( !StatusBar_SetText(GetHwnd(), nField, strText) )
 180     {
 181         wxLogLastError(wxT("StatusBar_SetText"));
 182     }
 183 }
 184
 185 wxString wxStatusBar95::GetStatusText(int nField) const
 186 {
 187     wxCHECK_MSG( (nField >= 0) && (nField < m_nFields), wxEmptyString,
 188                  _T("invalid statusbar field index") );
 189
 190     wxString str;
 191     int len = StatusBar_GetTextLen(GetHwnd(), nField);
 192     if ( len > 0 )
 193     {
 194         StatusBar_GetText(GetHwnd(), nField, wxStringBuffer(str, len));
 195     }
 196
 197     return str;
 198 }
 199
 200 int wxStatusBar95::GetBorderX() const
 201 {
 202     int aBorders[3];
 203     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 204
 205     return aBorders[0];
 206 }
 207
 208 int wxStatusBar95::GetBorderY() const
 209 {
 210     int aBorders[3];
 211     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 212
 213     return aBorders[1];
 214 }
 215
 216 void wxStatusBar95::SetMinHeight(int height)
 217 {
 218     SendMessage(GetHwnd(), SB_SETMINHEIGHT, height + 2*GetBorderY(), 0);
 219
 220     // have to send a (dummy) WM_SIZE to redraw it now
 221     SendMessage(GetHwnd(), WM_SIZE, 0, 0);
 222 }
 223
 224 bool wxStatusBar95::GetFieldRect(int i, wxRect& rect) const
 225 {
 226     wxCHECK_MSG( (i >= 0) && (i < m_nFields), FALSE,
 227                  _T("invalid statusbar field index") );
 228
 229     RECT r;
 230     if ( !::SendMessage(GetHwnd(), SB_GETRECT, i, (LPARAM)&r) )
 231     {
 232         wxLogLastError(wxT("SendMessage(SB_GETRECT)"));
 233     }
 234
 235     wxCopyRECTToRect(r, rect);
 236
 237     return TRUE;
 238 }
 239
 240 void wxStatusBar95::DoMoveWindow(int x, int y, int width, int height)
 241 {
 242     // the status bar wnd proc must be forwarded the WM_SIZE message whenever
 243     // the stat bar position/size is changed because it normally positions the
 244     // control itself along bottom or top side of the parent window - failing
 245     // to do so will result in nasty visual effects
 246     FORWARD_WM_SIZE(GetHwnd(), SIZE_RESTORED, x, y, SendMessage);
 247
 248     // but now, when the standard status bar wnd proc did all it wanted to do,
 249     // move the status bar to its correct location - usually this call may be
 250     // omitted because for normal status bars (positioned along the bottom
 251     // edge) the position is already set correctly, but if the user wants to
 252     // position them in some exotic location, this is really needed
 253     wxWindowMSW::DoMoveWindow(x, y, width, height);
 254
 255     // adjust fields widths to the new size
 256     SetFieldsWidth();
 257
 258     // we have to trigger wxSizeEvent if there are children window in status
 259     // bar because GetFieldRect returned incorrect (not updated) values up to
 260     // here, which almost certainly resulted in incorrectly redrawn statusbar
 261     if ( m_children.GetCount() > 0 )
 262     {
 263         wxSizeEvent event(GetClientSize(), m_windowId);
 264         event.SetEventObject(this);
 265         GetEventHandler()->ProcessEvent(event);
 266     }
 267 }
 268
 269 #endif // __WIN95__ && wxUSE_NATIVE_STATUSBAR
 270