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     if ( borderBetweenFields )
  90         *borderBetweenFields = m_renderer->GetStatusBarBorderBetweenFields();
  91     //rect.Deflate(sizeBorders.x, sizeBorders.y);
  92
  93     // recalc the field widths if needed
  94     if ( m_widthsAbs.IsEmpty() )
  95     {
  96         // the total width for the fields doesn't include the borders between
  97         // them
  98         m_widthsAbs = CalculateAbsWidths(rect.width -
  99                                          *borderBetweenFields*(m_nFields - 1));
 100     }
 101
 102     return rect;
 103 }
 104
 105 void wxStatusBarUniv::DoDraw(wxControlRenderer *renderer)
 106 {
 107     // get the fields rect
 108     wxCoord borderBetweenFields;
 109     wxRect rect = GetTotalFieldRect(&borderBetweenFields);
 110
 111     // prepare the DC
 112     wxDC& dc = renderer->GetDC();
 113     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 114
 115     // do draw the fields
 116     int flags = IsEnabled() ? 0 : (int)wxCONTROL_DISABLED;
 117     for ( int n = 0; n < m_nFields; n++ )
 118     {
 119         rect.width = m_widthsAbs[n];
 120
 121         if ( IsExposed(rect) )
 122         {
 123             wxTopLevelWindow *parentTLW = wxDynamicCast(GetParent(), wxTopLevelWindow);
 124
 125             // the size grip may be drawn only on the last field and only if we
 126             // have the corresponding style and even then only if we really can
 127             // resize this frame
 128             if ( n == m_nFields - 1 &&
 129                  HasFlag(wxST_SIZEGRIP) &&
 130                  GetParent()->HasFlag(wxRESIZE_BORDER) &&
 131                  parentTLW && !parentTLW->IsMaximized() )
 132             {
 133                 flags |= wxCONTROL_SIZEGRIP;
 134             }
 135
 136             int style;
 137             if (m_statusStyles)
 138                 style = m_statusStyles[n];
 139             else
 140                 style = wxSB_NORMAL;
 141             m_renderer->DrawStatusField(dc, rect, m_statusText[n], flags, style);
 142         }
 143
 144         rect.x += rect.width + borderBetweenFields;
 145     }
 146 }
 147
 148 void wxStatusBarUniv::RefreshField(int i)
 149 {
 150     wxRect rect;
 151     if ( GetFieldRect(i, rect) )
 152     {
 153         RefreshRect(rect);
 154     }
 155 }
 156
 157 // ----------------------------------------------------------------------------
 158 // fields text
 159 // ----------------------------------------------------------------------------
 160
 161 void wxStatusBarUniv::SetStatusText(const wxString& text, int number)
 162 {
 163     wxCHECK_RET( number >= 0 && number < m_nFields,
 164                  _T("invalid status bar field index in SetStatusText()") );
 165
 166     if ( text == m_statusText[number] )
 167     {
 168         // nothing changed
 169         return;
 170     }
 171
 172     m_statusText[number] = text;
 173
 174     RefreshField(number);
 175 }
 176
 177 wxString wxStatusBarUniv::GetStatusText(int number) const
 178 {
 179     wxCHECK_MSG( number >= 0 && number < m_nFields, wxEmptyString,
 180                  _T("invalid status bar field index") );
 181
 182     return m_statusText[number];
 183 }
 184
 185 // ----------------------------------------------------------------------------
 186 // fields count/widths
 187 // ----------------------------------------------------------------------------
 188
 189 void wxStatusBarUniv::SetFieldsCount(int number, const int *widths)
 190 {
 191     m_statusText.SetCount(number);
 192     wxStatusBarBase::SetFieldsCount(number, widths);
 193     m_widthsAbs.Empty();
 194 }
 195
 196 void wxStatusBarUniv::SetStatusWidths(int n, const int widths[])
 197 {
 198     wxStatusBarBase::SetStatusWidths(n, widths);
 199
 200     m_widthsAbs.Empty();
 201 }
 202
 203 // ----------------------------------------------------------------------------
 204 // geometry
 205 // ----------------------------------------------------------------------------
 206
 207 void wxStatusBarUniv::OnSize(wxSizeEvent& event)
 208 {
 209     // we don't need to refresh the fields whose width didn't change, so find
 210     // the first field whose width did change and refresh starting from it
 211     int field;
 212     if ( m_statusWidths )
 213     {
 214         for ( field = 0; field < m_nFields; field++ )
 215         {
 216             if ( m_statusWidths[field] < 0 )
 217             {
 218                 // var width field
 219                 break;
 220             }
 221         }
 222     }
 223     else // all fields have the same width
 224     {
 225         // hence all fields widths have changed
 226         field = 0;
 227     }
 228
 229     if ( field < m_nFields )
 230     {
 231         // call this before invalidating the old widths as we want to use them,
 232         // not the new ones
 233         wxRect rect = DoGetFieldRect(field);
 234
 235         // invalidate the widths, we'll have to recalc them
 236         m_widthsAbs.Empty();
 237
 238         // refresh everything after the first invalid field
 239         rect.y = 0;
 240         rect.SetRight(event.GetSize().x);
 241         rect.height = event.GetSize().y;
 242         RefreshRect(rect);
 243     }
 244
 245     event.Skip();
 246 }
 247
 248 bool wxStatusBarUniv::GetFieldRect(int n, wxRect& rect) const
 249 {
 250     wxCHECK_MSG( n >= 0 && n < m_nFields, false,
 251                  _T("invalid field index in GetFieldRect()") );
 252
 253     // this is a fix for a bug exhibited by the statbar sample: if
 254     // GetFieldRect() is called from the derived class OnSize() handler, then
 255     // our geometry info is wrong as our OnSize() didn't invalidate m_widthsAbs
 256     // yet - so recalc it just in case
 257     wxConstCast(this, wxStatusBarUniv)->m_widthsAbs.Empty();
 258
 259     rect = DoGetFieldRect(n);
 260
 261     return true;
 262 }
 263
 264 wxRect wxStatusBarUniv::DoGetFieldRect(int n) const
 265 {
 266     wxStatusBarUniv *self = wxConstCast(this, wxStatusBarUniv);
 267
 268     wxCoord borderBetweenFields;
 269     wxRect rect = self->GetTotalFieldRect(&borderBetweenFields);
 270
 271     // it's the caller responsability to check this, if unsure - call
 272     // GetFieldRect() instead
 273     wxCHECK_MSG( !m_widthsAbs.IsEmpty(), rect,
 274                  _T("can't be called if we don't have the widths") );
 275
 276     for ( int i = 0; i <= n; i++ )
 277     {
 278         rect.width = m_widthsAbs[i];
 279
 280         if ( i < n )
 281             rect.x += rect.width + borderBetweenFields;
 282     }
 283
 284     return rect;
 285 }
 286
 287 wxCoord wxStatusBarUniv::GetHeight() const
 288 {
 289     return GetCharHeight() + 2*GetBorderY();
 290 }
 291
 292 wxSize wxStatusBarUniv::DoGetBestSize() const
 293 {
 294     return wxSize(100, GetHeight());
 295 }
 296
 297 void wxStatusBarUniv::DoSetSize(int x, int y,
 298                                 int width, int WXUNUSED(height),
 299                                 int sizeFlags)
 300 {
 301     wxStatusBarBase::DoSetSize(x, y, width, GetHeight(), sizeFlags);
 302 }
 303
 304 // ----------------------------------------------------------------------------
 305 // misc
 306 // ----------------------------------------------------------------------------
 307
 308 void wxStatusBarUniv::SetMinHeight(int WXUNUSED(height))
 309 {
 310     // nothing to do here, we don't support it - and why would we?
 311 }
 312
 313 int wxStatusBarUniv::GetBorderX() const
 314 {
 315     return m_renderer->GetStatusBarBorders().x +
 316            m_renderer->GetStatusBarFieldMargins().x;
 317 }
 318
 319 int wxStatusBarUniv::GetBorderY() const
 320 {
 321     return m_renderer->GetStatusBarBorders().y +
 322            m_renderer->GetStatusBarFieldMargins().y;
 323 }
 324
 325 #endif // wxUSE_STATUSBAR