src/gtk/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dcmemory.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "dcmemory.h"
  12 #endif
  13
  14 #include "wx/dcmemory.h"
  15
  16 #include <gdk/gdk.h>
  17 #include <gtk/gtk.h>
  18
  19 //-----------------------------------------------------------------------------
  20 // wxMemoryDC
  21 //-----------------------------------------------------------------------------
  22
  23 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
  24
  25 wxMemoryDC::wxMemoryDC() : wxWindowDC()
  26 {
  27     m_ok = FALSE;
  28
  29     m_cmap = gtk_widget_get_default_colormap();
  30 }
  31
  32 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  33   : wxWindowDC()
  34 {
  35     m_ok = FALSE;
  36
  37     m_cmap = gtk_widget_get_default_colormap();
  38 }
  39
  40 wxMemoryDC::~wxMemoryDC()
  41 {
  42 }
  43
  44 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  45 {
  46     m_selected = bitmap;
  47     if (m_selected.Ok())
  48     {
  49         if (m_selected.GetPixmap())
  50         {
  51             m_window = m_selected.GetPixmap();
  52         }
  53         else
  54         {
  55             m_window = m_selected.GetBitmap();
  56         }
  57
  58         SetUpDC();
  59
  60         m_isMemDC = TRUE;
  61     }
  62     else
  63     {
  64         m_ok = FALSE;
  65         m_window = (GdkWindow *) NULL;
  66     }
  67 }
  68
  69 void wxMemoryDC::SetPen( const wxPen &pen )
  70 {
  71     if (m_selected.Ok() && m_selected.GetBitmap() && (*wxTRANSPARENT_PEN != pen))
  72     {
  73         if (*wxWHITE_PEN == pen)
  74             wxWindowDC::SetPen( *wxBLACK_PEN );
  75         else
  76             wxWindowDC::SetPen( *wxWHITE_PEN );
  77     }
  78     else
  79     {
  80         wxWindowDC::SetPen( pen );
  81     }
  82 }
  83
  84 void wxMemoryDC::SetBrush( const wxBrush &brush )
  85 {
  86     if (m_selected.Ok() && m_selected.GetBitmap() && (*wxTRANSPARENT_BRUSH != brush))
  87     {
  88         if (*wxWHITE_BRUSH == brush)
  89             wxWindowDC::SetBrush( *wxBLACK_BRUSH );
  90         else
  91             wxWindowDC::SetBrush( *wxWHITE_BRUSH );
  92     }
  93     else
  94     {
  95         wxWindowDC::SetBrush( brush );
  96     }
  97 }
  98
  99 void wxMemoryDC::SetTextForeground( const wxColour &col )
 100 {
 101     if (m_selected.Ok() && m_selected.GetBitmap())
 102     {
 103         if (col == *wxWHITE)
 104             wxWindowDC::SetTextForeground( *wxBLACK );
 105         else
 106             wxWindowDC::SetTextForeground( *wxWHITE );
 107     }
 108     else
 109     {
 110         wxWindowDC::SetTextForeground( col );
 111     }
 112 }
 113
 114 void wxMemoryDC::SetTextBackground( const wxColour &col )
 115 {
 116     if (m_selected.Ok() && m_selected.GetBitmap())
 117     {
 118         if (col == *wxWHITE)
 119             wxWindowDC::SetTextBackground( *wxBLACK );
 120         else
 121             wxWindowDC::SetTextBackground( *wxWHITE );
 122     }
 123     else
 124     {
 125         wxWindowDC::SetTextBackground( col );
 126     }
 127 }
 128
 129 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 130 {
 131     if (m_selected.Ok())
 132     {
 133         if (width) (*width) = m_selected.GetWidth();
 134         if (height) (*height) = m_selected.GetHeight();
 135     }
 136     else
 137     {
 138         if (width) (*width) = 0;
 139         if (height) (*height) = 0;
 140     }
 141 }
 142
 143