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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "dcmemory.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/dcmemory.h"
  18
  19 #include <gdk/gdk.h>
  20 #include <gtk/gtk.h>
  21
  22 //-----------------------------------------------------------------------------
  23 // wxMemoryDC
  24 //-----------------------------------------------------------------------------
  25
  26 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
  27
  28 wxMemoryDC::wxMemoryDC() : wxWindowDC()
  29 {
  30     m_ok = FALSE;
  31
  32     m_cmap = gtk_widget_get_default_colormap();
  33
  34 #ifdef __WXGTK20__
  35     m_context = gdk_pango_context_get();
  36     m_layout = pango_layout_new( m_context );
  37     m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) );
  38 #endif
  39 }
  40
  41 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  42   : wxWindowDC()
  43 {
  44     m_ok = FALSE;
  45
  46     m_cmap = gtk_widget_get_default_colormap();
  47
  48 #ifdef __WXGTK20__
  49     m_context = gdk_pango_context_get();
  50     m_layout = pango_layout_new( m_context );
  51     m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) );
  52 #endif
  53 }
  54
  55 wxMemoryDC::~wxMemoryDC()
  56 {
  57 }
  58
  59 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  60 {
  61     Destroy();
  62     m_selected = bitmap;
  63     if (m_selected.Ok())
  64     {
  65         if (m_selected.GetPixmap())
  66         {
  67             m_window = m_selected.GetPixmap();
  68         }
  69         else
  70         {
  71             m_window = m_selected.GetBitmap();
  72         }
  73
  74         m_isMemDC = TRUE;
  75
  76         SetUpDC();
  77     }
  78     else
  79     {
  80         m_ok = FALSE;
  81         m_window = (GdkWindow *) NULL;
  82     }
  83 }
  84
  85 void wxMemoryDC::SetPen( const wxPen& penOrig )
  86 {
  87     wxPen pen( penOrig );
  88     if ( m_selected.Ok() &&
  89             m_selected.GetBitmap() &&
  90                 (pen != *wxTRANSPARENT_PEN) )
  91     {
  92         pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
  93     }
  94
  95     wxWindowDC::SetPen( pen );
  96 }
  97
  98 void wxMemoryDC::SetBrush( const wxBrush& brushOrig )
  99 {
 100     wxBrush brush( brushOrig );
 101     if ( m_selected.Ok() &&
 102             m_selected.GetBitmap() &&
 103                 (brush != *wxTRANSPARENT_BRUSH) )
 104     {
 105         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE);
 106     }
 107
 108     wxWindowDC::SetBrush( brush );
 109 }
 110
 111 void wxMemoryDC::SetBackground( const wxBrush& brushOrig )
 112 {
 113     wxBrush brush(brushOrig);
 114
 115     if ( m_selected.Ok() &&
 116             m_selected.GetBitmap() &&
 117                 (brush != *wxTRANSPARENT_BRUSH) )
 118     {
 119         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
 120     }
 121
 122     wxWindowDC::SetBackground( brush );
 123 }
 124
 125 void wxMemoryDC::SetTextForeground( const wxColour& col )
 126 {
 127     if ( m_selected.Ok() && m_selected.GetBitmap() )
 128     {
 129         wxWindowDC::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE);
 130     }
 131     else
 132     {
 133         wxWindowDC::SetTextForeground( col );
 134     }
 135 }
 136
 137 void wxMemoryDC::SetTextBackground( const wxColour &col )
 138 {
 139     if (m_selected.Ok() && m_selected.GetBitmap())
 140     {
 141         wxWindowDC::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE );
 142     }
 143     else
 144     {
 145         wxWindowDC::SetTextBackground( col );
 146     }
 147 }
 148
 149 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 150 {
 151     if (m_selected.Ok())
 152     {
 153         if (width) (*width) = m_selected.GetWidth();
 154         if (height) (*height) = m_selected.GetHeight();
 155     }
 156     else
 157     {
 158         if (width) (*width) = 0;
 159         if (height) (*height) = 0;
 160     }
 161 }
 162
 163