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 #ifdef __GNUG__
  12 #pragma implementation "dcmemory.h"
  13 #endif
  14
  15 // For compilers that support precompilation, includes "wx.h".
  16 #include "wx/wxprec.h"
  17
  18 #ifdef __BORLANDC__
  19     #pragma hdrstop
  20 #endif
  21
  22 #include "wx/dcmemory.h"
  23
  24
  25 //-----------------------------------------------------------------------------
  26 // wxMemoryDC
  27 //-----------------------------------------------------------------------------
  28
  29 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
  30
  31 wxMemoryDC::wxMemoryDC() : wxDC()
  32 {
  33     m_isMemDC = TRUE;
  34 }
  35
  36 wxMemoryDC::wxMemoryDC(wxDC *WXUNUSED(dc)) : wxDC()
  37 {
  38     m_isMemDC = TRUE;
  39 }
  40
  41 wxMemoryDC::~wxMemoryDC()
  42 {
  43 }
  44
  45 void wxMemoryDC::SelectObject(const wxBitmap& bitmap)
  46 {
  47     SetMGLDC(NULL, TRUE);
  48     m_selected = bitmap;
  49
  50     if ( bitmap.Ok() )
  51         SetMGLDC(m_selected.CreateTmpDC(), TRUE);
  52 }
  53
  54 void wxMemoryDC::SetPen(const wxPen &pen)
  55 {
  56     wxCHECK_RET( Ok(), wxT("invalid dc") );
  57
  58     if ( GetDepth() == 1 && *wxTRANSPARENT_PEN != pen )
  59     {
  60         if ( *wxWHITE_PEN == pen )
  61             wxDC::SetPen(*wxBLACK_PEN);
  62         else
  63             wxDC::SetPen(*wxWHITE_PEN);
  64     }
  65     else
  66     {
  67         wxDC::SetPen(pen);
  68     }
  69 }
  70
  71 void wxMemoryDC::SetBrush(const wxBrush &brush)
  72 {
  73     wxCHECK_RET( Ok(), wxT("invalid dc") );
  74
  75     if ( GetDepth() == 1 && *wxTRANSPARENT_BRUSH != brush )
  76     {
  77         if ( *wxWHITE_BRUSH == brush )
  78             wxDC::SetBrush(*wxBLACK_BRUSH);
  79         else
  80             wxDC::SetBrush(*wxWHITE_BRUSH);
  81     }
  82     else
  83     {
  84         wxDC::SetBrush(brush);
  85     }
  86 }
  87
  88 void wxMemoryDC::SetTextForeground(const wxColour &col)
  89 {
  90     wxCHECK_RET( Ok(), wxT("invalid dc") );
  91
  92     if ( GetDepth() == 1 )
  93     {
  94         if ( col == *wxWHITE )
  95             wxDC::SetTextForeground(*wxBLACK);
  96         else
  97             wxDC::SetTextForeground(*wxWHITE);
  98     }
  99     else
 100     {
 101         wxDC::SetTextForeground(col);
 102     }
 103 }
 104
 105 void wxMemoryDC::SetTextBackground(const wxColour &col)
 106 {
 107     wxCHECK_RET( Ok(), wxT("invalid dc") );
 108
 109     if ( GetDepth() == 1 )
 110     {
 111         if ( col == *wxWHITE )
 112             wxDC::SetTextBackground(*wxBLACK);
 113         else
 114             wxDC::SetTextBackground(*wxWHITE);
 115     }
 116     else
 117     {
 118         wxDC::SetTextBackground(col);
 119     }
 120 }