src/univ/statusbr.cpp

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