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 wxMemoryDC::wxMemoryDC( const wxBitmap& bitmap )
  25     : wxWindowDC()
  26 {
  27     m_ok = false;
  28
  29     m_cmap = gtk_widget_get_default_colormap();
  30
  31     if ( bitmap.IsOk() )
  32         SelectObject(bitmap);
  33 }
  34
  35 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  36           : wxWindowDC()
  37 {
  38     m_ok = false;
  39
  40     m_cmap = gtk_widget_get_default_colormap();
  41
  42 }
  43
  44 wxMemoryDC::~wxMemoryDC()
  45 {
  46 }
  47
  48 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  49 {
  50     Destroy();
  51     m_selected = bitmap;
  52     if (m_selected.Ok())
  53     {
  54         if (m_selected.GetPixmap())
  55         {
  56             m_window = m_selected.GetPixmap();
  57         }
  58         else
  59         {
  60             m_window = m_selected.GetBitmap();
  61         }
  62
  63         m_isMemDC = true;
  64
  65         SetUpDC();
  66     }
  67     else
  68     {
  69         m_ok = false;
  70         m_window = (GdkWindow *) NULL;
  71     }
  72 }
  73
  74 void wxMemoryDC::SetPen( const wxPen& penOrig )
  75 {
  76     wxPen pen( penOrig );
  77     if ( m_selected.Ok() &&
  78             m_selected.GetBitmap() &&
  79                 (pen != *wxTRANSPARENT_PEN) )
  80     {
  81         pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
  82     }
  83
  84     wxWindowDC::SetPen( pen );
  85 }
  86
  87 void wxMemoryDC::SetBrush( const wxBrush& brushOrig )
  88 {
  89     wxBrush brush( brushOrig );
  90     if ( m_selected.Ok() &&
  91             m_selected.GetBitmap() &&
  92                 (brush != *wxTRANSPARENT_BRUSH) )
  93     {
  94         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE);
  95     }
  96
  97     wxWindowDC::SetBrush( brush );
  98 }
  99
 100 void wxMemoryDC::SetBackground( const wxBrush& brushOrig )
 101 {
 102     wxBrush brush(brushOrig);
 103
 104     if ( m_selected.Ok() &&
 105             m_selected.GetBitmap() &&
 106                 (brush != *wxTRANSPARENT_BRUSH) )
 107     {
 108         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
 109     }
 110
 111     wxWindowDC::SetBackground( brush );
 112 }
 113
 114 void wxMemoryDC::SetTextForeground( const wxColour& col )
 115 {
 116     if ( m_selected.Ok() && m_selected.GetBitmap() )
 117     {
 118         wxWindowDC::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE);
 119     }
 120     else
 121     {
 122         wxWindowDC::SetTextForeground( col );
 123     }
 124 }
 125
 126 void wxMemoryDC::SetTextBackground( const wxColour &col )
 127 {
 128     if (m_selected.Ok() && m_selected.GetBitmap())
 129     {
 130         wxWindowDC::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE );
 131     }
 132     else
 133     {
 134         wxWindowDC::SetTextBackground( col );
 135     }
 136 }
 137
 138 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 139 {
 140     if (m_selected.Ok())
 141     {
 142         if (width) (*width) = m_selected.GetWidth();
 143         if (height) (*height) = m_selected.GetHeight();
 144     }
 145     else
 146     {
 147         if (width) (*width) = 0;
 148         if (height) (*height) = 0;
 149     }
 150 }