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