src/gtk1/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/dcmemory.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Copyright:   (c) 1998 Robert Roebling
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 // For compilers that support precompilation, includes "wx.h".
  10 #include "wx/wxprec.h"
  11
  12 #include "wx/gtk1/dcmemory.h"
  13
  14 #include <gdk/gdk.h>
  15 #include <gtk/gtk.h>
  16
  17 //-----------------------------------------------------------------------------
  18 // wxMemoryDCImpl
  19 //-----------------------------------------------------------------------------
  20
  21 IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl, wxWindowDCImpl)
  22
  23 void wxMemoryDCImpl::Init()
  24 {
  25     m_ok = false;
  26
  27     m_cmap = gtk_widget_get_default_colormap();
  28 }
  29
  30 wxMemoryDCImpl::wxMemoryDCImpl(wxMemoryDC *owner, wxDC *WXUNUSED(dc))
  31               : wxWindowDCImpl(owner)
  32 {
  33     Init();
  34 }
  35
  36 wxMemoryDCImpl::~wxMemoryDCImpl()
  37 {
  38 }
  39
  40 void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap )
  41 {
  42     Destroy();
  43
  44     m_selected = bitmap;
  45     if (m_selected.IsOk())
  46     {
  47         if (m_selected.GetPixmap())
  48         {
  49             m_window = m_selected.GetPixmap();
  50         }
  51         else
  52         {
  53             m_window = m_selected.GetBitmap();
  54         }
  55
  56         m_isMemDC = true;
  57
  58         SetUpDC();
  59     }
  60     else
  61     {
  62         m_ok = false;
  63         m_window = NULL;
  64     }
  65 }
  66
  67 void wxMemoryDCImpl::SetPen( const wxPen& penOrig )
  68 {
  69     wxPen pen( penOrig );
  70     if ( m_selected.IsOk() &&
  71             m_selected.GetBitmap() &&
  72                 (pen != *wxTRANSPARENT_PEN) )
  73     {
  74         pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
  75     }
  76
  77     wxWindowDCImpl::SetPen( pen );
  78 }
  79
  80 void wxMemoryDCImpl::SetBrush( const wxBrush& brushOrig )
  81 {
  82     wxBrush brush( brushOrig );
  83     if ( m_selected.IsOk() &&
  84             m_selected.GetBitmap() &&
  85                 (brush != *wxTRANSPARENT_BRUSH) )
  86     {
  87         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE);
  88     }
  89
  90     wxWindowDCImpl::SetBrush( brush );
  91 }
  92
  93 void wxMemoryDCImpl::SetBackground( const wxBrush& brushOrig )
  94 {
  95     wxBrush brush(brushOrig);
  96
  97     if ( m_selected.IsOk() &&
  98             m_selected.GetBitmap() &&
  99                 (brush != *wxTRANSPARENT_BRUSH) )
 100     {
 101         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
 102     }
 103
 104     wxWindowDCImpl::SetBackground( brush );
 105 }
 106
 107 void wxMemoryDCImpl::SetTextForeground( const wxColour& col )
 108 {
 109     if ( m_selected.IsOk() && m_selected.GetBitmap() )
 110     {
 111         wxWindowDCImpl::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE);
 112     }
 113     else
 114     {
 115         wxWindowDCImpl::SetTextForeground( col );
 116     }
 117 }
 118
 119 void wxMemoryDCImpl::SetTextBackground( const wxColour &col )
 120 {
 121     if (m_selected.IsOk() && m_selected.GetBitmap())
 122     {
 123         wxWindowDCImpl::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE );
 124     }
 125     else
 126     {
 127         wxWindowDCImpl::SetTextBackground( col );
 128     }
 129 }
 130
 131 void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const
 132 {
 133     if (m_selected.IsOk())
 134     {
 135         if (width) (*width) = m_selected.GetWidth();
 136         if (height) (*height) = m_selected.GetHeight();
 137     }
 138     else
 139     {
 140         if (width) (*width) = 0;
 141         if (height) (*height) = 0;
 142     }
 143 }