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