src/gtk1/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 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/dcmemory.h"
  14
  15 #include <gdk/gdk.h>
  16 #include <gtk/gtk.h>
  17
  18 //-----------------------------------------------------------------------------
  19 // wxMemoryDC
  20 //-----------------------------------------------------------------------------
  21
  22 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
  23
  24 wxMemoryDC::wxMemoryDC() : wxWindowDC()
  25 {
  26     m_ok = FALSE;
  27
  28     m_cmap = gtk_widget_get_default_colormap();
  29 }
  30
  31 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  32   : wxWindowDC()
  33 {
  34     m_ok = FALSE;
  35
  36     m_cmap = gtk_widget_get_default_colormap();
  37
  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         m_isMemDC = TRUE;
  60
  61         SetUpDC();
  62     }
  63     else
  64     {
  65         m_ok = FALSE;
  66         m_window = (GdkWindow *) NULL;
  67     }
  68 }
  69
  70 void wxMemoryDC::SetPen( const wxPen& penOrig )
  71 {
  72     wxPen pen( penOrig );
  73     if ( m_selected.Ok() &&
  74             m_selected.GetBitmap() &&
  75                 (pen != *wxTRANSPARENT_PEN) )
  76     {
  77         pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
  78     }
  79
  80     wxWindowDC::SetPen( pen );
  81 }
  82
  83 void wxMemoryDC::SetBrush( const wxBrush& brushOrig )
  84 {
  85     wxBrush brush( brushOrig );
  86     if ( m_selected.Ok() &&
  87             m_selected.GetBitmap() &&
  88                 (brush != *wxTRANSPARENT_BRUSH) )
  89     {
  90         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE);
  91     }
  92
  93     wxWindowDC::SetBrush( brush );
  94 }
  95
  96 void wxMemoryDC::SetBackground( const wxBrush& brushOrig )
  97 {
  98     wxBrush brush(brushOrig);
  99
 100     if ( m_selected.Ok() &&
 101             m_selected.GetBitmap() &&
 102                 (brush != *wxTRANSPARENT_BRUSH) )
 103     {
 104         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
 105     }
 106
 107     wxWindowDC::SetBackground( brush );
 108 }
 109
 110 void wxMemoryDC::SetTextForeground( const wxColour& col )
 111 {
 112     if ( m_selected.Ok() && m_selected.GetBitmap() )
 113     {
 114         wxWindowDC::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE);
 115     }
 116     else
 117     {
 118         wxWindowDC::SetTextForeground( col );
 119     }
 120 }
 121
 122 void wxMemoryDC::SetTextBackground( const wxColour &col )
 123 {
 124     if (m_selected.Ok() && m_selected.GetBitmap())
 125     {
 126         wxWindowDC::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE );
 127     }
 128     else
 129     {
 130         wxWindowDC::SetTextBackground( col );
 131     }
 132 }
 133
 134 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 135 {
 136     if (m_selected.Ok())
 137     {
 138         if (width) (*width) = m_selected.GetWidth();
 139         if (height) (*height) = m_selected.GetHeight();
 140     }
 141     else
 142     {
 143         if (width) (*width) = 0;
 144         if (height) (*height) = 0;
 145     }
 146 }
 147
 148