src/gtk1/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/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 void wxMemoryDC::Init()
  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     Init();
  35 }
  36
  37 wxMemoryDC::~wxMemoryDC()
  38 {
  39 }
  40
  41 void wxMemoryDC::DoSelect( const wxBitmap& bitmap )
  42 {
  43     Destroy();
  44
  45     m_selected = bitmap;
  46     if (m_selected.Ok())
  47     {
  48         if (m_selected.GetPixmap())
  49         {
  50             m_window = m_selected.GetPixmap();
  51         }
  52         else
  53         {
  54             m_window = m_selected.GetBitmap();
  55         }
  56
  57         m_isMemDC = true;
  58
  59         SetUpDC();
  60     }
  61     else
  62     {
  63         m_ok = false;
  64         m_window = (GdkWindow *) NULL;
  65     }
  66 }
  67
  68 void wxMemoryDC::SetPen( const wxPen& penOrig )
  69 {
  70     wxPen pen( penOrig );
  71     if ( m_selected.Ok() &&
  72             m_selected.GetBitmap() &&
  73                 (pen != *wxTRANSPARENT_PEN) )
  74     {
  75         pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
  76     }
  77
  78     wxWindowDC::SetPen( pen );
  79 }
  80
  81 void wxMemoryDC::SetBrush( const wxBrush& brushOrig )
  82 {
  83     wxBrush brush( brushOrig );
  84     if ( m_selected.Ok() &&
  85             m_selected.GetBitmap() &&
  86                 (brush != *wxTRANSPARENT_BRUSH) )
  87     {
  88         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE);
  89     }
  90
  91     wxWindowDC::SetBrush( brush );
  92 }
  93
  94 void wxMemoryDC::SetBackground( const wxBrush& brushOrig )
  95 {
  96     wxBrush brush(brushOrig);
  97
  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::SetBackground( brush );
 106 }
 107
 108 void wxMemoryDC::SetTextForeground( const wxColour& col )
 109 {
 110     if ( m_selected.Ok() && m_selected.GetBitmap() )
 111     {
 112         wxWindowDC::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE);
 113     }
 114     else
 115     {
 116         wxWindowDC::SetTextForeground( col );
 117     }
 118 }
 119
 120 void wxMemoryDC::SetTextBackground( const wxColour &col )
 121 {
 122     if (m_selected.Ok() && m_selected.GetBitmap())
 123     {
 124         wxWindowDC::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE );
 125     }
 126     else
 127     {
 128         wxWindowDC::SetTextBackground( col );
 129     }
 130 }
 131
 132 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 133 {
 134     if (m_selected.Ok())
 135     {
 136         if (width) (*width) = m_selected.GetWidth();
 137         if (height) (*height) = m_selected.GetHeight();
 138     }
 139     else
 140     {
 141         if (width) (*width) = 0;
 142         if (height) (*height) = 0;
 143     }
 144 }