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