src/univ/statusbr.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        univ/statusbr.cpp
   3 // Purpose:     wxStatusBar implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     14.10.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "univstatusbr.h"
  22 #endif
  23
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #if wxUSE_STATUSBAR
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/settings.h"
  34     #include "wx/dcclient.h"
  35 #endif
  36
  37 #include "wx/statusbr.h"
  38 #include "wx/toplevel.h"
  39
  40 #include "wx/univ/renderer.h"
  41
  42 // ============================================================================
  43 // implementation
  44 // ============================================================================
  45
  46 BEGIN_EVENT_TABLE(wxStatusBarUniv, wxStatusBarBase)
  47     EVT_SIZE(wxStatusBarUniv::OnSize)
  48
  49     WX_EVENT_TABLE_INPUT_CONSUMER(wxStatusBarUniv)
  50 END_EVENT_TABLE()
  51
  52 WX_FORWARD_TO_INPUT_CONSUMER(wxStatusBarUniv)
  53
  54 // ----------------------------------------------------------------------------
  55 // creation
  56 // ----------------------------------------------------------------------------
  57
  58 void wxStatusBarUniv::Init()
  59 {
  60 }
  61
  62 bool wxStatusBarUniv::Create(wxWindow *parent,
  63                              wxWindowID id,
  64                              long style,
  65                              const wxString& name)
  66 {
  67     if ( !wxWindow::Create(parent, id,
  68                            wxDefaultPosition, wxDefaultSize,
  69                            style, name) )
  70     {
  71         return FALSE;
  72     }
  73
  74     SetFieldsCount(1);
  75
  76     CreateInputHandler(wxINP_HANDLER_STATUSBAR);
  77
  78     SetSize(DoGetBestSize());
  79
  80     return TRUE;
  81 }
  82
  83 // ----------------------------------------------------------------------------
  84 // drawing
  85 // ----------------------------------------------------------------------------
  86
  87 wxRect wxStatusBarUniv::GetTotalFieldRect(wxCoord *borderBetweenFields)
  88 {
  89     wxRect rect = GetClientRect();
  90
  91     // no, don't do this - the borders are meant to be inside this rect
  92     // wxSize sizeBorders =
  93     m_renderer->GetStatusBarBorders(borderBetweenFields);
  94     //rect.Deflate(sizeBorders.x, sizeBorders.y);
  95
  96     // recalc the field widths if needed
  97     if ( m_widthsAbs.IsEmpty() )
  98     {
  99         // the total width for the fields doesn't include the borders between
 100         // them
 101         m_widthsAbs = CalculateAbsWidths(rect.width -
 102                                          *borderBetweenFields*(m_nFields - 1));
 103     }
 104
 105     return rect;
 106 }
 107
 108 void wxStatusBarUniv::DoDraw(wxControlRenderer *renderer)
 109 {
 110     // get the fields rect
 111     wxCoord borderBetweenFields;
 112     wxRect rect = GetTotalFieldRect(&borderBetweenFields);
 113
 114     // prepare the DC
 115     wxDC& dc = renderer->GetDC();
 116     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 117
 118     // do draw the fields
 119     int flags = IsEnabled() ? 0 : wxCONTROL_DISABLED;
 120     for ( int n = 0; n < m_nFields; n++ )
 121     {
 122         rect.width = m_widthsAbs[n];
 123
 124         if ( IsExposed(rect) )
 125         {
 126             wxTopLevelWindow *parentTLW = wxDynamicCast(GetParent(), wxTopLevelWindow);
 127
 128             // the size grip may be drawn only on the last field and only if we
 129             // have the corresponding style and even then only if we really can
 130             // resize this frame
 131             if ( n == m_nFields - 1 &&
 132                  HasFlag(wxST_SIZEGRIP) &&
 133                  GetParent()->HasFlag(wxRESIZE_BORDER) &&
 134                  parentTLW && !parentTLW->IsMaximized() )
 135             {
 136                 // NB: we use wxCONTROL_ISDEFAULT for this because it doesn't
 137                 //     have any meaning for the status bar otherwise anyhow
 138                 //     (it's still ugly, of course, but there are too few flags
 139                 //     to squander them for things like this)
 140                 flags |= wxCONTROL_ISDEFAULT;
 141             }
 142
 143             m_renderer->DrawStatusField(dc, rect, m_statusText[n], flags);
 144         }
 145
 146         rect.x += rect.width + borderBetweenFields;
 147     }
 148 }
 149
 150 void wxStatusBarUniv::RefreshField(int i)
 151 {
 152     wxRect rect;
 153     if ( GetFieldRect(i, rect) )
 154     {
 155         RefreshRect(rect);
 156     }
 157 }
 158
 159 // ----------------------------------------------------------------------------
 160 // fields text
 161 // ----------------------------------------------------------------------------
 162
 163 void wxStatusBarUniv::SetStatusText(const wxString& text, int number)
 164 {
 165     wxCHECK_RET( number >= 0 && number < m_nFields,
 166                  _T("invalid status bar field index in SetStatusText()") );
 167
 168     if ( text == m_statusText[number] )
 169     {
 170         // nothing changed
 171         return;
 172     }
 173
 174     m_statusText[number] = text;
 175
 176     RefreshField(number);
 177 }
 178
 179 wxString wxStatusBarUniv::GetStatusText(int number) const
 180 {
 181     wxCHECK_MSG( number >= 0 && number < m_nFields, _T(""),
 182                  _T("invalid status bar field index") );
 183
 184     return m_statusText[number];
 185 }
 186
 187 // ----------------------------------------------------------------------------
 188 // fields count/widths
 189 // ----------------------------------------------------------------------------
 190
 191 void wxStatusBarUniv::SetFieldsCount(int number, const int *widths)
 192 {
 193     m_statusText.SetCount(number);
 194     wxStatusBarBase::SetFieldsCount(number, widths);
 195     m_widthsAbs.Empty();
 196 }
 197
 198 void wxStatusBarUniv::SetStatusWidths(int n, const int widths[])
 199 {
 200     wxStatusBarBase::SetStatusWidths(n, widths);
 201
 202     m_widthsAbs.Empty();
 203 }
 204
 205 // ----------------------------------------------------------------------------
 206 // geometry
 207 // ----------------------------------------------------------------------------
 208
 209 void wxStatusBarUniv::OnSize(wxSizeEvent& event)
 210 {
 211     // we don't need to refresh the fields whose width didn't change, so find
 212     // the first field whose width did change and refresh starting from it
 213     int field;
 214     if ( m_statusWidths )
 215     {
 216         for ( field = 0; field < m_nFields; field++ )
 217         {
 218             if ( m_statusWidths[field] < 0 )
 219             {
 220                 // var width field
 221                 break;
 222             }
 223         }
 224     }
 225     else // all fields have the same width
 226     {
 227         // hence all fields widths have changed
 228         field = 0;
 229     }
 230
 231     if ( field < m_nFields )
 232     {
 233         // call this before invalidating the old widths as we want to use them,
 234         // not the new ones
 235         wxRect rect = DoGetFieldRect(field);
 236
 237         // invalidate the widths, we'll have to recalc them
 238         m_widthsAbs.Empty();
 239
 240         // refresh everything after the first invalid field
 241         rect.y = 0;
 242         rect.SetRight(event.GetSize().x);
 243         rect.height = event.GetSize().y;
 244         RefreshRect(rect);
 245     }
 246
 247     event.Skip();
 248 }
 249
 250 bool wxStatusBarUniv::GetFieldRect(int n, wxRect& rect) const
 251 {
 252     wxCHECK_MSG( n >= 0 && n < m_nFields, FALSE,
 253                  _T("invalid field index in GetFieldRect()") );
 254
 255     // this is a fix for a bug exhibited by the statbar sample: if
 256     // GetFieldRect() is called from the derived class OnSize() handler, then
 257     // our geometry info is wrong as our OnSize() didn't invalidate m_widthsAbs
 258     // yet - so recalc it just in case
 259     wxConstCast(this, wxStatusBarUniv)->m_widthsAbs.Empty();
 260
 261     rect = DoGetFieldRect(n);
 262
 263     return TRUE;
 264 }
 265
 266 wxRect wxStatusBarUniv::DoGetFieldRect(int n) const
 267 {
 268     wxStatusBarUniv *self = wxConstCast(this, wxStatusBarUniv);
 269
 270     wxCoord borderBetweenFields;
 271     wxRect rect = self->GetTotalFieldRect(&borderBetweenFields);
 272
 273     // it's the caller responsability to check this, if unsure - call
 274     // GetFieldRect() instead
 275     wxCHECK_MSG( !m_widthsAbs.IsEmpty(), rect,
 276                  _T("can't be called if we don't have the widths") );
 277
 278     for ( int i = 0; i <= n; i++ )
 279     {
 280         rect.width = m_widthsAbs[i];
 281
 282         if ( i < n )
 283             rect.x += rect.width + borderBetweenFields;
 284     }
 285
 286     return rect;
 287 }
 288
 289 wxCoord wxStatusBarUniv::GetHeight() const
 290 {
 291     wxClientDC dc(wxConstCast(this, wxStatusBarUniv));
 292     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 293
 294     return dc.GetCharHeight() + 2*GetBorderY();
 295 }
 296
 297 wxSize wxStatusBarUniv::DoGetBestSize() const
 298 {
 299     return wxSize(100, GetHeight());
 300 }
 301
 302 void wxStatusBarUniv::DoSetSize(int x, int y,
 303                                 int width, int WXUNUSED(height),
 304                                 int sizeFlags)
 305 {
 306     wxStatusBarBase::DoSetSize(x, y, width, GetHeight(), sizeFlags);
 307 }
 308
 309 // ----------------------------------------------------------------------------
 310 // misc
 311 // ----------------------------------------------------------------------------
 312
 313 void wxStatusBarUniv::SetMinHeight(int WXUNUSED(height))
 314 {
 315     // nothing to do here, we don't support it - and why would we?
 316 }
 317
 318 int wxStatusBarUniv::GetBorderX() const
 319 {
 320     return m_renderer->GetStatusBarBorders(NULL).x;
 321 }
 322
 323 int wxStatusBarUniv::GetBorderY() const
 324 {
 325     return m_renderer->GetStatusBarBorders(NULL).y;
 326 }
 327
 328 #endif // wxUSE_STATUSBAR
 329