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     Destroy();
  47     m_selected = bitmap;
  48     if (m_selected.Ok())
  49     {
  50         if (m_selected.GetPixmap())
  51         {
  52             m_window = m_selected.GetPixmap();
  53         }
  54         else
  55         {
  56             m_window = m_selected.GetBitmap();
  57         }
  58
  59         SetUpDC();
  60
  61         m_isMemDC = TRUE;
  62     }
  63     else
  64     {
  65         m_ok = FALSE;
  66         m_window = (GdkWindow *) NULL;
  67     }
  68 }
  69
  70 void wxMemoryDC::SetPen( const wxPen &pen )
  71 {
  72     if (m_selected.Ok() && m_selected.GetBitmap() && (*wxTRANSPARENT_PEN != pen))
  73     {
  74         if (*wxWHITE_PEN == pen)
  75             wxWindowDC::SetPen( *wxBLACK_PEN );
  76         else
  77             wxWindowDC::SetPen( *wxWHITE_PEN );
  78     }
  79     else
  80     {
  81         wxWindowDC::SetPen( pen );
  82     }
  83 }
  84
  85 void wxMemoryDC::SetBrush( const wxBrush &brush )
  86 {
  87     if (m_selected.Ok() && m_selected.GetBitmap() && (*wxTRANSPARENT_BRUSH != brush))
  88     {
  89         if (*wxWHITE_BRUSH == brush)
  90             wxWindowDC::SetBrush( *wxBLACK_BRUSH );
  91         else
  92             wxWindowDC::SetBrush( *wxWHITE_BRUSH );
  93     }
  94     else
  95     {
  96         wxWindowDC::SetBrush( brush );
  97     }
  98 }
  99
 100 void wxMemoryDC::SetTextForeground( const wxColour &col )
 101 {
 102     if (m_selected.Ok() && m_selected.GetBitmap())
 103     {
 104         if (col == *wxWHITE)
 105             wxWindowDC::SetTextForeground( *wxBLACK );
 106         else
 107             wxWindowDC::SetTextForeground( *wxWHITE );
 108     }
 109     else
 110     {
 111         wxWindowDC::SetTextForeground( col );
 112     }
 113 }
 114
 115 void wxMemoryDC::SetTextBackground( const wxColour &col )
 116 {
 117     if (m_selected.Ok() && m_selected.GetBitmap())
 118     {
 119         if (col == *wxWHITE)
 120             wxWindowDC::SetTextBackground( *wxBLACK );
 121         else
 122             wxWindowDC::SetTextBackground( *wxWHITE );
 123     }
 124     else
 125     {
 126         wxWindowDC::SetTextBackground( col );
 127     }
 128 }
 129
 130 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 131 {
 132     if (m_selected.Ok())
 133     {
 134         if (width) (*width) = m_selected.GetWidth();
 135         if (height) (*height) = m_selected.GetHeight();
 136     }
 137     else
 138     {
 139         if (width) (*width) = 0;
 140         if (height) (*height) = 0;
 141     }
 142 }
 143
 144