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