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
  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
 183 void wxStatusBar::DrawFieldText(wxDC& dc, int i)
 184 {
 185   int leftMargin = 2;
 186
 187   wxRectangle 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   dc.SetClippingRegion(rect.x, rect.y, rect.width, rect.height);
 200
 201   dc.DrawText(text, xpos, ypos);
 202
 203   dc.DestroyClippingRegion();
 204 }
 205
 206 void wxStatusBar::DrawField(wxDC& dc, int i)
 207 {
 208   wxRectangle rect;
 209   GetFieldRect(i, rect);
 210
 211     // Draw border
 212     // Have grey background, plus 3-d border -
 213     // One black rectangle.
 214     // Inside this, left and top sides - dark grey. Bottom and right -
 215     // white.
 216
 217         dc.SetPen(m_hilightPen);
 218
 219     // Right and bottom white lines
 220     dc.DrawLine(rect.x + rect.width, rect.y,
 221                 rect.x + rect.width, rect.y + rect.height);
 222     dc.DrawLine(rect.x + rect.width, rect.y + rect.height,
 223                                 rect.x, rect.y + rect.height);
 224
 225         dc.SetPen(m_mediumShadowPen);
 226
 227     // Left and top grey lines
 228     dc.DrawLine(rect.x, rect.y + rect.height,
 229                 rect.x, rect.y);
 230     dc.DrawLine(rect.x, rect.y,
 231                 rect.x + rect.width, rect.y);
 232
 233         DrawFieldText(dc, i);
 234 }
 235
 236   // Get the position and size of the field's internal bounding rectangle
 237 bool wxStatusBar::GetFieldRect(int n, wxRectangle& rect) const
 238 {
 239   if ((n < 0) || (n >= m_nFields))
 240     return FALSE;
 241
 242   int width, height;
 243   GetClientSize(&width, &height);
 244
 245   int i;
 246   int sum_of_nonvar = 0;
 247   int num_of_var = 0;
 248   bool do_same_width = FALSE;
 249
 250   int fieldWidth = 0;
 251   int fieldPosition = 0;
 252
 253   if (m_statusWidths)
 254   {
 255     // if sum(not variable Windows) > c_width - (20 points per variable_window)
 256     // then do_same_width = TRUE;
 257     for (i = 0; i < m_nFields; i++)
 258     {
 259        if (m_statusWidths[i] > 0) sum_of_nonvar += m_statusWidths[i];
 260         else num_of_var++;
 261      }
 262      if (sum_of_nonvar > (width - 20*num_of_var)) do_same_width = TRUE;
 263   }
 264   else do_same_width = TRUE;
 265   if (do_same_width)
 266   {
 267     for (i = 0; i < m_nFields; i++)
 268     {
 269       fieldWidth = (int)(width/m_nFields);
 270           fieldPosition = i*fieldWidth;
 271           if ( i == n )
 272                 break;
 273     }
 274   }
 275   else // no_same_width
 276   {
 277     int *tempwidth = new int[m_nFields];
 278     int temppos = 0;
 279     for (i = 0; i < m_nFields; i++)
 280     {
 281       if (m_statusWidths[i] > 0) tempwidth[i] = m_statusWidths[i];
 282       else tempwidth[i] = (width - sum_of_nonvar) / num_of_var;
 283     }
 284     for (i = 0; i < m_nFields; i++)
 285     {
 286                 fieldWidth = tempwidth[i];
 287                 fieldPosition = temppos;
 288
 289         temppos += tempwidth[i];
 290
 291                 if ( i == n )
 292                         break;
 293     }
 294     delete [] tempwidth;
 295   }
 296
 297     rect.x = fieldPosition + wxTHICK_LINE_BORDER;
 298         rect.y = wxTHICK_LINE_BORDER;
 299
 300         rect.width = fieldWidth - 2 * wxTHICK_LINE_BORDER ;
 301         rect.height = height - 2 * wxTHICK_LINE_BORDER ;
 302
 303         return TRUE;
 304 }
 305
 306 // Initialize colours
 307 void wxStatusBar::InitColours(void)
 308 {
 309     // Shadow colours
 310 #if defined(__WIN95__)
 311     wxColour mediumShadowColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DSHADOW));
 312     m_mediumShadowPen = wxPen(mediumShadowColour, 1, wxSOLID);
 313
 314     wxColour hilightColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DHILIGHT));
 315     m_hilightPen = wxPen(hilightColour, 1, wxSOLID);
 316 #else
 317     m_mediumShadowPen = wxPen("GREY", 1, wxSOLID);
 318     m_hilightPen = wxPen("WHITE", 1, wxSOLID);
 319 #endif
 320
 321         m_defaultStatusBarFont = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
 322     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 323 }
 324
 325 // Responds to colour changes, and passes event on to children.
 326 void wxStatusBar::OnSysColourChanged(wxSysColourChangedEvent& event)
 327 {
 328     InitColours();
 329     Refresh();
 330
 331     // Propagate the event to the non-top-level children
 332     wxWindow::OnSysColourChanged(event);
 333 }
 334