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, 2001 Vaclav Slavik
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "dcmemory.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21 #include "wx/dcmemory.h"
  22
  23
  24 //-----------------------------------------------------------------------------
  25 // wxMemoryDC
  26 //-----------------------------------------------------------------------------
  27
  28 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
  29
  30 wxMemoryDC::wxMemoryDC() : wxDC()
  31 {
  32     m_isMemDC = TRUE;
  33 }
  34
  35 wxMemoryDC::wxMemoryDC(wxDC *WXUNUSED(dc)) : wxDC()
  36 {
  37     m_isMemDC = TRUE;
  38 }
  39
  40 wxMemoryDC::~wxMemoryDC()
  41 {
  42 }
  43
  44 void wxMemoryDC::SelectObject(const wxBitmap& bitmap)
  45 {
  46     SetMGLDC(NULL, TRUE);
  47     m_selected = bitmap;
  48
  49     if ( bitmap.Ok() )
  50         SetMGLDC(m_selected.CreateTmpDC(), TRUE);
  51 }
  52
  53 void wxMemoryDC::SetPen(const wxPen &pen)
  54 {
  55     wxCHECK_RET( Ok(), wxT("invalid dc") );
  56
  57     if ( GetDepth() == 1 && *wxTRANSPARENT_PEN != pen )
  58     {
  59         if ( *wxWHITE_PEN == pen )
  60             wxDC::SetPen(*wxBLACK_PEN);
  61         else
  62             wxDC::SetPen(*wxWHITE_PEN);
  63     }
  64     else
  65     {
  66         wxDC::SetPen(pen);
  67     }
  68 }
  69
  70 void wxMemoryDC::SetBrush(const wxBrush &brush)
  71 {
  72     wxCHECK_RET( Ok(), wxT("invalid dc") );
  73
  74     if ( GetDepth() == 1 && *wxTRANSPARENT_BRUSH != brush )
  75     {
  76         if ( *wxWHITE_BRUSH == brush )
  77             wxDC::SetBrush(*wxBLACK_BRUSH);
  78         else
  79             wxDC::SetBrush(*wxWHITE_BRUSH);
  80     }
  81     else
  82     {
  83         wxDC::SetBrush(brush);
  84     }
  85 }
  86
  87 void wxMemoryDC::SetTextForeground(const wxColour &col)
  88 {
  89     wxCHECK_RET( Ok(), wxT("invalid dc") );
  90
  91     if ( GetDepth() == 1 )
  92     {
  93         if ( col == *wxWHITE )
  94             wxDC::SetTextForeground(*wxBLACK);
  95         else
  96             wxDC::SetTextForeground(*wxWHITE);
  97     }
  98     else
  99     {
 100         wxDC::SetTextForeground(col);
 101     }
 102 }
 103
 104 void wxMemoryDC::SetTextBackground(const wxColour &col)
 105 {
 106     wxCHECK_RET( Ok(), wxT("invalid dc") );
 107
 108     if ( GetDepth() == 1 )
 109     {
 110         if ( col == *wxWHITE )
 111             wxDC::SetTextBackground(*wxBLACK);
 112         else
 113             wxDC::SetTextBackground(*wxWHITE);
 114     }
 115     else
 116     {
 117         wxDC::SetTextBackground(col);
 118     }
 119 }