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_panes.GetCount() - 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 < (int)m_panes.GetCount(); 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 == (int)m_panes.GetCount() - 1 &&
 130                  HasFlag(wxSTB_SIZEGRIP) &&
 131                  GetParent()->HasFlag(wxRESIZE_BORDER) &&
 132                  parentTLW && !parentTLW->IsMaximized() )
 133             {
 134                 flags |= wxCONTROL_SIZEGRIP;
 135             }
 136
 137             m_renderer->DrawStatusField(dc, rect, GetStatusText(n), flags, m_panes[n].GetStyle());
 138         }
 139
 140         rect.x += rect.width + borderBetweenFields;
 141     }
 142 }
 143
 144 void wxStatusBarUniv::DoUpdateStatusText(int i)
 145 {
 146     wxRect rect;
 147     if ( GetFieldRect(i, rect) )
 148     {
 149         RefreshRect(rect);
 150     }
 151 }
 152
 153 // ----------------------------------------------------------------------------
 154 // fields count/widths
 155 // ----------------------------------------------------------------------------
 156
 157 void wxStatusBarUniv::SetFieldsCount(int number, const int *widths)
 158 {
 159     wxStatusBarBase::SetFieldsCount(number, widths);
 160
 161     m_widthsAbs.Empty();
 162 }
 163
 164 void wxStatusBarUniv::SetStatusWidths(int n, const int widths[])
 165 {
 166     wxStatusBarBase::SetStatusWidths(n, widths);
 167
 168     m_widthsAbs.Empty();
 169 }
 170
 171 // ----------------------------------------------------------------------------
 172 // geometry
 173 // ----------------------------------------------------------------------------
 174
 175 void wxStatusBarUniv::OnSize(wxSizeEvent& event)
 176 {
 177     // we don't need to refresh the fields whose width didn't change, so find
 178     // the first field whose width did change and refresh starting from it
 179     size_t field;
 180     if ( m_bSameWidthForAllPanes )
 181     {
 182         // hence all fields widths have changed
 183         field = 0;
 184     }
 185     else
 186     {
 187         for ( field = 0; field < m_panes.GetCount(); field++ )
 188         {
 189             if ( m_panes[field].GetWidth() < 0 )
 190             {
 191                 // var width field
 192                 break;
 193             }
 194         }
 195     }
 196
 197     if ( field < m_panes.GetCount() )
 198     {
 199         // call this before invalidating the old widths as we want to use them,
 200         // not the new ones
 201         wxRect rect = DoGetFieldRect(field);
 202
 203         // invalidate the widths, we'll have to recalc them
 204         m_widthsAbs.Empty();
 205
 206         // refresh everything after the first invalid field
 207         rect.y = 0;
 208         rect.SetRight(event.GetSize().x);
 209         rect.height = event.GetSize().y;
 210         RefreshRect(rect);
 211     }
 212
 213     event.Skip();
 214 }
 215
 216 bool wxStatusBarUniv::GetFieldRect(int n, wxRect& rect) const
 217 {
 218     wxCHECK_MSG( n >= 0 && (size_t)n < m_panes.GetCount(), false,
 219                  wxT("invalid field index in GetFieldRect()") );
 220
 221     // this is a fix for a bug exhibited by the statbar sample: if
 222     // GetFieldRect() is called from the derived class OnSize() handler, then
 223     // our geometry info is wrong as our OnSize() didn't invalidate m_widthsAbs
 224     // yet - so recalc it just in case
 225     wxConstCast(this, wxStatusBarUniv)->m_widthsAbs.Empty();
 226
 227     rect = DoGetFieldRect(n);
 228
 229     return true;
 230 }
 231
 232 wxRect wxStatusBarUniv::DoGetFieldRect(int n) const
 233 {
 234     wxStatusBarUniv *self = wxConstCast(this, wxStatusBarUniv);
 235
 236     wxCoord borderBetweenFields;
 237     wxRect rect = self->GetTotalFieldRect(&borderBetweenFields);
 238
 239     // it's the caller responsability to check this, if unsure - call
 240     // GetFieldRect() instead
 241     wxCHECK_MSG( !m_widthsAbs.IsEmpty(), rect,
 242                  wxT("can't be called if we don't have the widths") );
 243
 244     for ( int i = 0; i <= n; i++ )
 245     {
 246         rect.width = m_widthsAbs[i];
 247
 248         if ( i < n )
 249             rect.x += rect.width + borderBetweenFields;
 250     }
 251
 252     return rect;
 253 }
 254
 255 wxCoord wxStatusBarUniv::GetHeight() const
 256 {
 257     return GetCharHeight() + 2*GetBorderY();
 258 }
 259
 260 wxSize wxStatusBarUniv::DoGetBestSize() const
 261 {
 262     return wxSize(100, GetHeight());
 263 }
 264
 265 void wxStatusBarUniv::DoSetSize(int x, int y,
 266                                 int width, int WXUNUSED(height),
 267                                 int sizeFlags)
 268 {
 269     wxStatusBarBase::DoSetSize(x, y, width, GetHeight(), sizeFlags);
 270 }
 271
 272 // ----------------------------------------------------------------------------
 273 // misc
 274 // ----------------------------------------------------------------------------
 275
 276 void wxStatusBarUniv::SetMinHeight(int WXUNUSED(height))
 277 {
 278     // nothing to do here, we don't support it - and why would we?
 279 }
 280
 281 int wxStatusBarUniv::GetBorderX() const
 282 {
 283     return m_renderer->GetStatusBarBorders().x +
 284            m_renderer->GetStatusBarFieldMargins().x;
 285 }
 286
 287 int wxStatusBarUniv::GetBorderY() const
 288 {
 289     return m_renderer->GetStatusBarBorders().y +
 290            m_renderer->GetStatusBarFieldMargins().y;
 291 }
 292
 293 #endif // wxUSE_STATUSBAR