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                 flags |= wxCONTROL_SIZEGRIP;
 133             }
 134
 135             int style;
 136             if (m_statusStyles)
 137                 style = m_statusStyles[n];
 138             else
 139                 style = wxSB_NORMAL;
 140             m_renderer->DrawStatusField(dc, rect, m_statusText[n], flags, style);
 141         }
 142
 143         rect.x += rect.width + borderBetweenFields;
 144     }
 145 }
 146
 147 void wxStatusBarUniv::RefreshField(int i)
 148 {
 149     wxRect rect;
 150     if ( GetFieldRect(i, rect) )
 151     {
 152         RefreshRect(rect);
 153     }
 154 }
 155
 156 // ----------------------------------------------------------------------------
 157 // fields text
 158 // ----------------------------------------------------------------------------
 159
 160 void wxStatusBarUniv::SetStatusText(const wxString& text, int number)
 161 {
 162     wxCHECK_RET( number >= 0 && number < m_nFields,
 163                  _T("invalid status bar field index in SetStatusText()") );
 164
 165     if ( text == m_statusText[number] )
 166     {
 167         // nothing changed
 168         return;
 169     }
 170
 171     m_statusText[number] = text;
 172
 173     RefreshField(number);
 174 }
 175
 176 wxString wxStatusBarUniv::GetStatusText(int number) const
 177 {
 178     wxCHECK_MSG( number >= 0 && number < m_nFields, wxEmptyString,
 179                  _T("invalid status bar field index") );
 180
 181     return m_statusText[number];
 182 }
 183
 184 // ----------------------------------------------------------------------------
 185 // fields count/widths
 186 // ----------------------------------------------------------------------------
 187
 188 void wxStatusBarUniv::SetFieldsCount(int number, const int *widths)
 189 {
 190     m_statusText.SetCount(number);
 191     wxStatusBarBase::SetFieldsCount(number, widths);
 192     m_widthsAbs.Empty();
 193 }
 194
 195 void wxStatusBarUniv::SetStatusWidths(int n, const int widths[])
 196 {
 197     wxStatusBarBase::SetStatusWidths(n, widths);
 198
 199     m_widthsAbs.Empty();
 200 }
 201
 202 // ----------------------------------------------------------------------------
 203 // geometry
 204 // ----------------------------------------------------------------------------
 205
 206 void wxStatusBarUniv::OnSize(wxSizeEvent& event)
 207 {
 208     // we don't need to refresh the fields whose width didn't change, so find
 209     // the first field whose width did change and refresh starting from it
 210     int field;
 211     if ( m_statusWidths )
 212     {
 213         for ( field = 0; field < m_nFields; field++ )
 214         {
 215             if ( m_statusWidths[field] < 0 )
 216             {
 217                 // var width field
 218                 break;
 219             }
 220         }
 221     }
 222     else // all fields have the same width
 223     {
 224         // hence all fields widths have changed
 225         field = 0;
 226     }
 227
 228     if ( field < m_nFields )
 229     {
 230         // call this before invalidating the old widths as we want to use them,
 231         // not the new ones
 232         wxRect rect = DoGetFieldRect(field);
 233
 234         // invalidate the widths, we'll have to recalc them
 235         m_widthsAbs.Empty();
 236
 237         // refresh everything after the first invalid field
 238         rect.y = 0;
 239         rect.SetRight(event.GetSize().x);
 240         rect.height = event.GetSize().y;
 241         RefreshRect(rect);
 242     }
 243
 244     event.Skip();
 245 }
 246
 247 bool wxStatusBarUniv::GetFieldRect(int n, wxRect& rect) const
 248 {
 249     wxCHECK_MSG( n >= 0 && n < m_nFields, false,
 250                  _T("invalid field index in GetFieldRect()") );
 251
 252     // this is a fix for a bug exhibited by the statbar sample: if
 253     // GetFieldRect() is called from the derived class OnSize() handler, then
 254     // our geometry info is wrong as our OnSize() didn't invalidate m_widthsAbs
 255     // yet - so recalc it just in case
 256     wxConstCast(this, wxStatusBarUniv)->m_widthsAbs.Empty();
 257
 258     rect = DoGetFieldRect(n);
 259
 260     return true;
 261 }
 262
 263 wxRect wxStatusBarUniv::DoGetFieldRect(int n) const
 264 {
 265     wxStatusBarUniv *self = wxConstCast(this, wxStatusBarUniv);
 266
 267     wxCoord borderBetweenFields;
 268     wxRect rect = self->GetTotalFieldRect(&borderBetweenFields);
 269
 270     // it's the caller responsability to check this, if unsure - call
 271     // GetFieldRect() instead
 272     wxCHECK_MSG( !m_widthsAbs.IsEmpty(), rect,
 273                  _T("can't be called if we don't have the widths") );
 274
 275     for ( int i = 0; i <= n; i++ )
 276     {
 277         rect.width = m_widthsAbs[i];
 278
 279         if ( i < n )
 280             rect.x += rect.width + borderBetweenFields;
 281     }
 282
 283     return rect;
 284 }
 285
 286 wxCoord wxStatusBarUniv::GetHeight() const
 287 {
 288     return GetCharHeight() + 2*GetBorderY();
 289 }
 290
 291 wxSize wxStatusBarUniv::DoGetBestSize() const
 292 {
 293     return wxSize(100, GetHeight());
 294 }
 295
 296 void wxStatusBarUniv::DoSetSize(int x, int y,
 297                                 int width, int WXUNUSED(height),
 298                                 int sizeFlags)
 299 {
 300     wxStatusBarBase::DoSetSize(x, y, width, GetHeight(), sizeFlags);
 301 }
 302
 303 // ----------------------------------------------------------------------------
 304 // misc
 305 // ----------------------------------------------------------------------------
 306
 307 void wxStatusBarUniv::SetMinHeight(int WXUNUSED(height))
 308 {
 309     // nothing to do here, we don't support it - and why would we?
 310 }
 311
 312 int wxStatusBarUniv::GetBorderX() const
 313 {
 314     return m_renderer->GetStatusBarBorders(NULL).x;
 315 }
 316
 317 int wxStatusBarUniv::GetBorderY() const
 318 {
 319     return m_renderer->GetStatusBarBorders(NULL).y;
 320 }
 321
 322 #endif // wxUSE_STATUSBAR