src/mgl/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dcmemory.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling, Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling,
   7 //                  2001 SciTech Software, Inc. (www.scitechsoft.com)
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #include "wx/dcmemory.h"
  19
  20
  21 //-----------------------------------------------------------------------------
  22 // wxMemoryDC
  23 //-----------------------------------------------------------------------------
  24
  25 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
  26
  27 wxMemoryDC::wxMemoryDC() : wxDC()
  28 {
  29     m_isMemDC = TRUE;
  30 }
  31
  32 wxMemoryDC::wxMemoryDC(wxDC *WXUNUSED(dc)) : wxDC()
  33 {
  34     m_isMemDC = TRUE;
  35 }
  36
  37 wxMemoryDC::~wxMemoryDC()
  38 {
  39 }
  40
  41 void wxMemoryDC::SelectObject(const wxBitmap& bitmap)
  42 {
  43     if ( bitmap.Ok() )
  44     {
  45         m_selected = bitmap;
  46         SetMGLDC(m_selected.CreateTmpDC(), TRUE);
  47     }
  48 }
  49
  50 void wxMemoryDC::SetPen(const wxPen &pen)
  51 {
  52     wxCHECK_RET( Ok(), wxT("invalid dc") );
  53
  54     if ( GetDepth() == 1 && *wxTRANSPARENT_PEN != pen )
  55     {
  56         if ( *wxWHITE_PEN == pen )
  57             wxDC::SetPen(*wxBLACK_PEN);
  58         else
  59             wxDC::SetPen(*wxWHITE_PEN);
  60     }
  61     else
  62     {
  63         wxDC::SetPen(pen);
  64     }
  65 }
  66
  67 void wxMemoryDC::SetBrush(const wxBrush &brush)
  68 {
  69     wxCHECK_RET( Ok(), wxT("invalid dc") );
  70
  71     if ( GetDepth() == 1 && *wxTRANSPARENT_BRUSH != brush )
  72     {
  73         if ( *wxWHITE_BRUSH == brush )
  74             wxDC::SetBrush(*wxBLACK_BRUSH);
  75         else
  76             wxDC::SetBrush(*wxWHITE_BRUSH);
  77     }
  78     else
  79     {
  80         wxDC::SetBrush(brush);
  81     }
  82 }
  83
  84 void wxMemoryDC::SetTextForeground(const wxColour &col)
  85 {
  86     wxCHECK_RET( Ok(), wxT("invalid dc") );
  87
  88     if ( GetDepth() == 1 )
  89     {
  90         if ( col == *wxWHITE )
  91             wxDC::SetTextForeground(*wxBLACK);
  92         else
  93             wxDC::SetTextForeground(*wxWHITE);
  94     }
  95     else
  96     {
  97         wxDC::SetTextForeground(col);
  98     }
  99 }
 100
 101 void wxMemoryDC::SetTextBackground(const wxColour &col)
 102 {
 103     wxCHECK_RET( Ok(), wxT("invalid dc") );
 104
 105     if ( GetDepth() == 1 )
 106     {
 107         if ( col == *wxWHITE )
 108             wxDC::SetTextBackground(*wxBLACK);
 109         else
 110             wxDC::SetTextBackground(*wxWHITE);
 111     }
 112     else
 113     {
 114         wxDC::SetTextBackground(col);
 115     }
 116 }