src/generic/statusbr.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/statusbr.cpp
   3 // Purpose:     wxStatusBarGeneric class implementation
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "statusbr.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 //#if !defined(__WIN32__) || !wxUSE_NATIVE_STATUSBAR
  24
  25 #ifndef WX_PRECOMP
  26 #include "wx/setup.h"
  27 #include "wx/frame.h"
  28 #include "wx/settings.h"
  29 #include "wx/dcclient.h"
  30 #endif
  31
  32 #include "wx/statusbr.h"
  33
  34 // with wxUSE_NATIVE_STATUSBAR it is not included from wx/statusbr.h
  35 #include "wx/generic/statusbr.h"
  36
  37 IMPLEMENT_DYNAMIC_CLASS(wxStatusBarGeneric, wxWindow)
  38
  39 #if !defined(__WIN32__) || !wxUSE_NATIVE_STATUSBAR
  40     IMPLEMENT_DYNAMIC_CLASS(wxStatusBar, wxStatusBarGeneric)
  41 #endif // Win32 && wxUSE_NATIVE_STATUSBAR
  42
  43 BEGIN_EVENT_TABLE(wxStatusBarGeneric, wxWindow)
  44     EVT_PAINT(wxStatusBarGeneric::OnPaint)
  45     EVT_SYS_COLOUR_CHANGED(wxStatusBarGeneric::OnSysColourChanged)
  46 END_EVENT_TABLE()
  47
  48 // Default status border dimensions
  49 #define         wxTHICK_LINE_BORDER 2
  50 #define         wxTHICK_LINE_WIDTH  1
  51
  52 wxStatusBarGeneric::wxStatusBarGeneric()
  53 {
  54   m_statusWidths = (int *) NULL;
  55   m_statusStrings = (wxString *) NULL;
  56   m_nFields = 0;
  57   m_borderX = wxTHICK_LINE_BORDER;
  58   m_borderY = wxTHICK_LINE_BORDER;
  59 }
  60
  61 wxStatusBarGeneric::~wxStatusBarGeneric()
  62 {
  63 #   ifdef __WXMSW__
  64         SetFont(wxNullFont);
  65 #   endif // MSW
  66
  67     if ( m_statusWidths )
  68         delete[] m_statusWidths;
  69     if ( m_statusStrings )
  70         delete[] m_statusStrings;
  71 }
  72
  73 bool wxStatusBarGeneric::Create(wxWindow *parent,
  74                          wxWindowID id,
  75                          long style,
  76                          const wxString& name)
  77 {
  78   m_statusWidths = (int *) NULL;
  79   m_statusStrings = (wxString *) NULL;
  80   m_nFields = 0;
  81   m_borderX = wxTHICK_LINE_BORDER;
  82   m_borderY = wxTHICK_LINE_BORDER;
  83
  84   bool success = wxWindow::Create(parent, id,
  85                                   wxDefaultPosition, wxDefaultSize,
  86                                   style | wxTAB_TRAVERSAL, name);
  87
  88   // Don't wish this to be found as a child
  89 #ifndef __WXMAC__
  90   parent->GetChildren().DeleteObject(this);
  91 #endif
  92   InitColours();
  93
  94   SetFont(m_defaultStatusBarFont);
  95
  96   return success;
  97 }
  98
  99 void wxStatusBarGeneric::SetFieldsCount(int number, const int *widths)
 100 {
 101     if ( number != m_nFields )
 102     {
 103         m_nFields = number;
 104
 105         delete[] m_statusStrings;
 106         m_statusStrings = new wxString[number];
 107
 108 #if 0 // VZ: what is this for?
 109         int i;
 110         for (i = 0; i < number; i++)
 111             m_statusStrings[i] = "";
 112 #endif
 113     }
 114
 115     SetStatusWidths(number, widths);
 116 }
 117
 118 void wxStatusBarGeneric::SetStatusText(const wxString& text, int number)
 119 {
 120     wxCHECK_RET( (number >= 0) && (number < m_nFields),
 121                  _T("invalid status bar field index") );
 122
 123     m_statusStrings[number] = text;
 124
 125     Refresh();
 126 }
 127
 128 wxString wxStatusBarGeneric::GetStatusText(int n) const
 129 {
 130     wxCHECK_MSG( (n >= 0) && (n < m_nFields), wxEmptyString,
 131                  _T("invalid status bar field index") );
 132
 133     return m_statusStrings[n];
 134 }
 135
 136 void wxStatusBarGeneric::SetStatusWidths(int n, const int widths_field[])
 137 {
 138     // only set status widths, when n == number of statuswindows
 139     wxCHECK_RET( n == m_nFields, _T("status bar field count mismatch") );
 140
 141     // delete the old widths in any case - this function may be used to reset
 142     // the widths to the default (all equal)
 143     delete [] m_statusWidths;
 144
 145     if ( !widths_field )
 146     {
 147         // not an error, see the comment above
 148         m_statusWidths = (int *)NULL;
 149
 150         return;
 151     }
 152
 153     int i;
 154
 155     // VZ: this doesn't do anything as is_variable is unused later
 156 #if 0
 157     // when one window (minimum) is variable (width <= 0)
 158     bool is_variable = FALSE;
 159     for (i = 0; i < m_nFields; i++)
 160     {
 161         if (widths_field[i] <= 0)
 162             is_variable = TRUE;
 163     }
 164 #endif // 0
 165
 166     // set widths
 167     m_statusWidths = new int[n];
 168     for (i = 0; i < m_nFields; i++)
 169     {
 170         m_statusWidths[i] = widths_field[i];
 171     }
 172 }
 173
 174 void wxStatusBarGeneric::OnPaint(wxPaintEvent& WXUNUSED(event) )
 175 {
 176   wxPaintDC dc(this);
 177
 178   int i;
 179   if ( GetFont().Ok() )
 180     dc.SetFont(GetFont());
 181   dc.SetBackgroundMode(wxTRANSPARENT);
 182
 183   for ( i = 0; i < m_nFields; i ++ )
 184     DrawField(dc, i);
 185
 186 #   ifdef __WXMSW__
 187         dc.SetFont(wxNullFont);
 188 #   endif // MSW
 189 }
 190
 191 void wxStatusBarGeneric::DrawFieldText(wxDC& dc, int i)
 192 {
 193   int leftMargin = 2;
 194
 195   wxRect rect;
 196   GetFieldRect(i, rect);
 197
 198   wxString text(GetStatusText(i));
 199
 200   long x, y;
 201
 202   dc.GetTextExtent(text, &x, &y);
 203
 204   int xpos = rect.x + leftMargin;
 205   int ypos = (int) (((rect.height - y) / 2 ) + rect.y + 0.5) ;
 206
 207 #if defined( __WXGTK__ ) || defined(__WXMAC__)
 208   xpos++;
 209   ypos++;
 210 #endif
 211
 212   dc.SetClippingRegion(rect.x, rect.y, rect.width, rect.height);
 213
 214   dc.DrawText(text, xpos, ypos);
 215
 216   dc.DestroyClippingRegion();
 217 }
 218
 219 void wxStatusBarGeneric::DrawField(wxDC& dc, int i)
 220 {
 221   wxRect rect;
 222   GetFieldRect(i, rect);
 223
 224     // Draw border
 225     // Have grey background, plus 3-d border -
 226     // One black rectangle.
 227     // Inside this, left and top sides - dark grey. Bottom and right -
 228     // white.
 229
 230     dc.SetPen(m_hilightPen);
 231
 232     // Right and bottom white lines
 233     dc.DrawLine(rect.x + rect.width, rect.y,
 234                 rect.x + rect.width, rect.y + rect.height);
 235     dc.DrawLine(rect.x + rect.width, rect.y + rect.height,
 236                 rect.x, rect.y + rect.height);
 237
 238     dc.SetPen(m_mediumShadowPen);
 239
 240     // Left and top grey lines
 241     dc.DrawLine(rect.x, rect.y + rect.height,
 242            rect.x, rect.y);
 243     dc.DrawLine(rect.x, rect.y,
 244         rect.x + rect.width, rect.y);
 245
 246     DrawFieldText(dc, i);
 247 }
 248
 249   // Get the position and size of the field's internal bounding rectangle
 250 bool wxStatusBarGeneric::GetFieldRect(int n, wxRect& rect) const
 251 {
 252   wxCHECK_MSG( (n >= 0) && (n < m_nFields), FALSE,
 253                _T("invalid status bar field index") );
 254
 255   int width, height;
 256   GetClientSize(&width, &height);
 257
 258   int i;
 259   int sum_of_nonvar = 0;
 260   int num_of_var = 0;
 261   bool do_same_width = FALSE;
 262
 263   int fieldWidth = 0;
 264   int fieldPosition = 0;
 265
 266   if (m_statusWidths)
 267   {
 268     // if sum(not variable Windows) > c_width - (20 points per variable_window)
 269     // then do_same_width = TRUE;
 270     for (i = 0; i < m_nFields; i++)
 271     {
 272        if (m_statusWidths[i] > 0) sum_of_nonvar += m_statusWidths[i];
 273         else num_of_var++;
 274      }
 275      if (sum_of_nonvar > (width - 20*num_of_var)) do_same_width = TRUE;
 276   }
 277   else do_same_width = TRUE;
 278   if (do_same_width)
 279   {
 280     for (i = 0; i < m_nFields; i++)
 281     {
 282       fieldWidth = (int)(width/m_nFields);
 283       fieldPosition = i*fieldWidth;
 284       if ( i == n )
 285         break;
 286     }
 287   }
 288   else // no_same_width
 289   {
 290     int *tempwidth = new int[m_nFields];
 291     int temppos = 0;
 292     for (i = 0; i < m_nFields; i++)
 293     {
 294       if (m_statusWidths[i] > 0) tempwidth[i] = m_statusWidths[i];
 295       else tempwidth[i] = (width - sum_of_nonvar) / num_of_var;
 296     }
 297     for (i = 0; i < m_nFields; i++)
 298     {
 299         fieldWidth = tempwidth[i];
 300         fieldPosition = temppos;
 301
 302           temppos += tempwidth[i];
 303
 304         if ( i == n )
 305             break;
 306     }
 307     delete [] tempwidth;
 308   }
 309
 310     rect.x = fieldPosition + wxTHICK_LINE_BORDER;
 311     rect.y = wxTHICK_LINE_BORDER;
 312
 313     rect.width = fieldWidth - 2 * wxTHICK_LINE_BORDER ;
 314     rect.height = height - 2 * wxTHICK_LINE_BORDER ;
 315
 316     return TRUE;
 317 }
 318
 319 // Initialize colours
 320 void wxStatusBarGeneric::InitColours()
 321 {
 322     // Shadow colours
 323 #if defined(__WIN95__)
 324     wxColour mediumShadowColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DSHADOW));
 325     m_mediumShadowPen = wxPen(mediumShadowColour, 1, wxSOLID);
 326
 327     wxColour hilightColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DHILIGHT));
 328     m_hilightPen = wxPen(hilightColour, 1, wxSOLID);
 329 #else
 330     m_mediumShadowPen = wxPen("GREY", 1, wxSOLID);
 331     m_hilightPen = wxPen("WHITE", 1, wxSOLID);
 332 #endif
 333
 334     m_defaultStatusBarFont = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
 335     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 336 }
 337
 338 // Responds to colour changes, and passes event on to children.
 339 void wxStatusBarGeneric::OnSysColourChanged(wxSysColourChangedEvent& event)
 340 {
 341     InitColours();
 342     Refresh();
 343
 344     // Propagate the event to the non-top-level children
 345     wxWindow::OnSysColourChanged(event);
 346 }
 347
 348 void wxStatusBarGeneric::SetMinHeight(int height)
 349 {
 350     // check that this min height is not less than minimal height for the
 351     // current font
 352     wxClientDC dc(this);
 353     wxCoord y;
 354     dc.GetTextExtent( _T("X"), NULL, &y );
 355
 356     if ( height > (11*y)/10 )
 357     {
 358         SetSize(-1, -1, -1, height + 2*m_borderY);
 359     }
 360 }
 361
 362 //#endif // Win32 && wxUSE_NATIVE_STATUSBAR