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 #ifdef __WXGTK20__
  32     m_context = gdk_pango_context_get();
  33     m_layout = pango_layout_new( m_context );
  34     m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) );
  35 #endif
  36 }
  37
  38 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  39   : wxWindowDC()
  40 {
  41     m_ok = FALSE;
  42
  43     m_cmap = gtk_widget_get_default_colormap();
  44
  45 #ifdef __WXGTK20__
  46     m_context = gdk_pango_context_get();
  47     m_layout = pango_layout_new( m_context );
  48     m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) );
  49 #endif
  50 }
  51
  52 wxMemoryDC::~wxMemoryDC()
  53 {
  54 }
  55
  56 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  57 {
  58     Destroy();
  59     m_selected = bitmap;
  60     if (m_selected.Ok())
  61     {
  62         if (m_selected.GetPixmap())
  63         {
  64             m_window = m_selected.GetPixmap();
  65         }
  66         else
  67         {
  68             m_window = m_selected.GetBitmap();
  69         }
  70
  71         m_isMemDC = TRUE;
  72
  73         SetUpDC();
  74     }
  75     else
  76     {
  77         m_ok = FALSE;
  78         m_window = (GdkWindow *) NULL;
  79     }
  80 }
  81
  82 void wxMemoryDC::SetPen( const wxPen& penOrig )
  83 {
  84     wxPen pen( penOrig );
  85     if ( m_selected.Ok() &&
  86             m_selected.GetBitmap() &&
  87                 (pen != *wxTRANSPARENT_PEN) )
  88     {
  89         pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
  90     }
  91
  92     wxWindowDC::SetPen( pen );
  93 }
  94
  95 void wxMemoryDC::SetBrush( const wxBrush& brushOrig )
  96 {
  97     wxBrush brush( brushOrig );
  98     if ( m_selected.Ok() &&
  99             m_selected.GetBitmap() &&
 100                 (brush != *wxTRANSPARENT_BRUSH) )
 101     {
 102         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE);
 103     }
 104
 105     wxWindowDC::SetBrush( brush );
 106 }
 107
 108 void wxMemoryDC::SetBackground( const wxBrush& brushOrig )
 109 {
 110     wxBrush brush(brushOrig);
 111
 112     if ( m_selected.Ok() &&
 113             m_selected.GetBitmap() &&
 114                 (brush != *wxTRANSPARENT_BRUSH) )
 115     {
 116         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
 117     }
 118
 119     wxWindowDC::SetBackground( brush );
 120 }
 121
 122 void wxMemoryDC::SetTextForeground( const wxColour& col )
 123 {
 124     if ( m_selected.Ok() && m_selected.GetBitmap() )
 125     {
 126         wxWindowDC::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE);
 127     }
 128     else
 129     {
 130         wxWindowDC::SetTextForeground( col );
 131     }
 132 }
 133
 134 void wxMemoryDC::SetTextBackground( const wxColour &col )
 135 {
 136     if (m_selected.Ok() && m_selected.GetBitmap())
 137     {
 138         wxWindowDC::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE );
 139     }
 140     else
 141     {
 142         wxWindowDC::SetTextBackground( col );
 143     }
 144 }
 145
 146 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 147 {
 148     if (m_selected.Ok())
 149     {
 150         if (width) (*width) = m_selected.GetWidth();
 151         if (height) (*height) = m_selected.GetHeight();
 152     }
 153     else
 154     {
 155         if (width) (*width) = 0;
 156         if (height) (*height) = 0;
 157     }
 158 }
 159
 160