src/generic/statusbr.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        statusbr.cpp
   3 // Purpose:     wxStatusBar 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 #ifndef WX_PRECOMP
  24 #include "wx/setup.h"
  25 #include "wx/frame.h"
  26 #include "wx/settings.h"
  27 #include "wx/dcclient.h"
  28 #endif
  29
  30 #include "wx/generic/statusbr.h"
  31
  32 #ifdef __WXMSW__
  33 #include <windows.h>
  34 #include "wx/msw/winundef.h"
  35 #endif
  36
  37 #if !USE_SHARED_LIBRARY
  38 IMPLEMENT_DYNAMIC_CLASS(wxStatusBar, wxWindow)
  39
  40 BEGIN_EVENT_TABLE(wxStatusBar, wxWindow)
  41     EVT_PAINT(wxStatusBar::OnPaint)
  42     EVT_SYS_COLOUR_CHANGED(wxStatusBar::OnSysColourChanged)
  43 END_EVENT_TABLE()
  44 #endif
  45
  46 // Default status border dimensions
  47 #define         wxTHICK_LINE_BORDER 2
  48 #define         wxTHICK_LINE_WIDTH  1
  49
  50 wxStatusBar::wxStatusBar(void)
  51 {
  52   m_statusWidths = (int *) NULL;
  53   m_statusStrings = (wxString *) NULL;
  54   m_nFields = 0;
  55   m_borderX = wxTHICK_LINE_BORDER;
  56   m_borderY = wxTHICK_LINE_BORDER;
  57 }
  58
  59 wxStatusBar::~wxStatusBar(void)
  60 {
  61 #   ifdef __WXMSW__
  62         SetFont(wxNullFont);
  63 #   endif // MSW
  64
  65     if ( m_statusWidths )
  66         delete[] m_statusWidths;
  67     if ( m_statusStrings )
  68         delete[] m_statusStrings;
  69 }
  70
  71 bool wxStatusBar::Create(wxWindow *parent, wxWindowID id,
  72            const wxPoint& pos,
  73            const wxSize& size,
  74            long style,
  75            const wxString& name)
  76 {
  77   m_statusWidths = (int *) NULL;
  78   m_statusStrings = (wxString *) NULL;
  79   m_nFields = 0;
  80   m_borderX = wxTHICK_LINE_BORDER;
  81   m_borderY = wxTHICK_LINE_BORDER;
  82
  83   bool success = wxWindow::Create(parent, id, pos, size, style | wxTAB_TRAVERSAL, name);
  84
  85   // Don't wish this to be found as a child
  86 #ifndef __WXMAC__
  87   parent->GetChildren().DeleteObject(this);
  88 #endif
  89   InitColours();
  90
  91   SetFont(m_defaultStatusBarFont);
  92
  93   return success;
  94 }
  95
  96 void wxStatusBar::SetFieldsCount(int number, const int widths[])
  97 {
  98   m_nFields = number;
  99
 100   if ( m_statusWidths )
 101     delete[] m_statusWidths;
 102
 103   if ( m_statusStrings )
 104         delete[] m_statusStrings;
 105
 106   m_statusStrings = new wxString[number];
 107
 108   int i;
 109   for (i = 0; i < number; i++)
 110     m_statusStrings[i] = "";
 111
 112     if ( widths )
 113           SetStatusWidths(number, widths);
 114 }
 115
 116 void wxStatusBar::SetStatusText(const wxString& text, int number)
 117 {
 118   if ((number < 0) || (number >= m_nFields))
 119     return;
 120
 121   m_statusStrings[number] = text;
 122
 123   Refresh();
 124
 125 #ifdef __WXMSW__
 126   // For some reason, this can cause major GDI problems - graphics
 127   // all over the place. E.g. in print previewing.
 128 //  ::UpdateWindow((HWND) GetHWND());
 129 #endif
 130 }
 131
 132 wxString wxStatusBar::GetStatusText(int n) const
 133 {
 134   if ((n < 0) || (n >= m_nFields))
 135     return wxString("");
 136   else
 137     return m_statusStrings[n];
 138 }
 139
 140 void wxStatusBar::SetStatusWidths(int n, const int widths_field[])
 141 {
 142   // only set status widths, when n == number of statuswindows
 143   if (n == m_nFields)
 144   {
 145     // only set status widths,
 146     // when one window (minimum) is variable (width <= 0)
 147     bool is_variable = FALSE;
 148     int i;
 149     for (i = 0; i < m_nFields; i++)
 150     {
 151       if (widths_field[i] <= 0) is_variable = TRUE;
 152     }
 153
 154     // if there are old widths, delete them
 155     if (m_statusWidths)
 156       delete [] m_statusWidths;
 157
 158     // set widths
 159     m_statusWidths = new int[n];
 160     for (i = 0; i < m_nFields; i++)
 161     {
 162       m_statusWidths[i] = widths_field[i];
 163     }
 164   }
 165 }
 166
 167 void wxStatusBar::OnPaint(wxPaintEvent& WXUNUSED(event) )
 168 {
 169   wxPaintDC dc(this);
 170
 171   int i;
 172   if ( GetFont().Ok() )
 173     dc.SetFont(GetFont());
 174   dc.SetBackgroundMode(wxTRANSPARENT);
 175
 176   for ( i = 0; i < m_nFields; i ++ )
 177     DrawField(dc, i);
 178
 179 #   ifdef __WXMSW__
 180         dc.SetFont(wxNullFont);
 181 #   endif // MSW
 182 }
 183
 184 void wxStatusBar::DrawFieldText(wxDC& dc, int i)
 185 {
 186   int leftMargin = 2;
 187
 188   wxRect rect;
 189   GetFieldRect(i, rect);
 190
 191   wxString text(GetStatusText(i));
 192
 193   long x, y;
 194
 195   dc.GetTextExtent(text, &x, &y);
 196
 197   int xpos = rect.x + leftMargin;
 198   int ypos = (int) (((rect.height - y) / 2 ) + rect.y + 0.5) ;
 199
 200 #if defined( __WXGTK__ ) || defined(__WXMAC__)
 201   xpos++;
 202   ypos++;
 203 #endif
 204
 205   dc.SetClippingRegion(rect.x, rect.y, rect.width, rect.height);
 206
 207   dc.DrawText(text, xpos, ypos);
 208
 209   dc.DestroyClippingRegion();
 210 }
 211
 212 void wxStatusBar::DrawField(wxDC& dc, int i)
 213 {
 214   wxRect rect;
 215   GetFieldRect(i, rect);
 216
 217     // Draw border
 218     // Have grey background, plus 3-d border -
 219     // One black rectangle.
 220     // Inside this, left and top sides - dark grey. Bottom and right -
 221     // white.
 222
 223     dc.SetPen(m_hilightPen);
 224
 225     // Right and bottom white lines
 226     dc.DrawLine(rect.x + rect.width, rect.y,
 227                 rect.x + rect.width, rect.y + rect.height);
 228     dc.DrawLine(rect.x + rect.width, rect.y + rect.height,
 229                 rect.x, rect.y + rect.height);
 230
 231     dc.SetPen(m_mediumShadowPen);
 232
 233     // Left and top grey lines
 234     dc.DrawLine(rect.x, rect.y + rect.height,
 235            rect.x, rect.y);
 236     dc.DrawLine(rect.x, rect.y,
 237         rect.x + rect.width, rect.y);
 238
 239     DrawFieldText(dc, i);
 240 }
 241
 242   // Get the position and size of the field's internal bounding rectangle
 243 bool wxStatusBar::GetFieldRect(int n, wxRect& rect) const
 244 {
 245   if ((n < 0) || (n >= m_nFields))
 246     return FALSE;
 247
 248   int width, height;
 249   GetClientSize(&width, &height);
 250
 251   int i;
 252   int sum_of_nonvar = 0;
 253   int num_of_var = 0;
 254   bool do_same_width = FALSE;
 255
 256   int fieldWidth = 0;
 257   int fieldPosition = 0;
 258
 259   if (m_statusWidths)
 260   {
 261     // if sum(not variable Windows) > c_width - (20 points per variable_window)
 262     // then do_same_width = TRUE;
 263     for (i = 0; i < m_nFields; i++)
 264     {
 265        if (m_statusWidths[i] > 0) sum_of_nonvar += m_statusWidths[i];
 266         else num_of_var++;
 267      }
 268      if (sum_of_nonvar > (width - 20*num_of_var)) do_same_width = TRUE;
 269   }
 270   else do_same_width = TRUE;
 271   if (do_same_width)
 272   {
 273     for (i = 0; i < m_nFields; i++)
 274     {
 275       fieldWidth = (int)(width/m_nFields);
 276       fieldPosition = i*fieldWidth;
 277       if ( i == n )
 278         break;
 279     }
 280   }
 281   else // no_same_width
 282   {
 283     int *tempwidth = new int[m_nFields];
 284     int temppos = 0;
 285     for (i = 0; i < m_nFields; i++)
 286     {
 287       if (m_statusWidths[i] > 0) tempwidth[i] = m_statusWidths[i];
 288       else tempwidth[i] = (width - sum_of_nonvar) / num_of_var;
 289     }
 290     for (i = 0; i < m_nFields; i++)
 291     {
 292         fieldWidth = tempwidth[i];
 293         fieldPosition = temppos;
 294
 295           temppos += tempwidth[i];
 296
 297         if ( i == n )
 298             break;
 299     }
 300     delete [] tempwidth;
 301   }
 302
 303     rect.x = fieldPosition + wxTHICK_LINE_BORDER;
 304     rect.y = wxTHICK_LINE_BORDER;
 305
 306     rect.width = fieldWidth - 2 * wxTHICK_LINE_BORDER ;
 307     rect.height = height - 2 * wxTHICK_LINE_BORDER ;
 308
 309     return TRUE;
 310 }
 311
 312 // Initialize colours
 313 void wxStatusBar::InitColours(void)
 314 {
 315     // Shadow colours
 316 #if defined(__WIN95__)
 317     wxColour mediumShadowColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DSHADOW));
 318     m_mediumShadowPen = wxPen(mediumShadowColour, 1, wxSOLID);
 319
 320     wxColour hilightColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DHILIGHT));
 321     m_hilightPen = wxPen(hilightColour, 1, wxSOLID);
 322 #else
 323     m_mediumShadowPen = wxPen("GREY", 1, wxSOLID);
 324     m_hilightPen = wxPen("WHITE", 1, wxSOLID);
 325 #endif
 326
 327     m_defaultStatusBarFont = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
 328     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 329 }
 330
 331 // Responds to colour changes, and passes event on to children.
 332 void wxStatusBar::OnSysColourChanged(wxSysColourChangedEvent& event)
 333 {
 334     InitColours();
 335     Refresh();
 336
 337     // Propagate the event to the non-top-level children
 338     wxWindow::OnSysColourChanged(event);
 339 }
 340