src/gtk/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/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 #if wxUSE_NEW_DC
  23 IMPLEMENT_ABSTRACT_CLASS(wxGTKMemoryImplDC, wxGTKWindowImplDC)
  24 #else
  25 IMPLEMENT_ABSTRACT_CLASS(wxMemoryDC,wxWindowDC)
  26 #endif
  27
  28 #if wxUSE_NEW_DC
  29 wxGTKMemoryImplDC::wxGTKMemoryImplDC( wxMemoryDC *owner )
  30   : wxGTKWindowImplDC( owner )
  31 {
  32     Init();
  33 }
  34
  35 wxGTKMemoryImplDC::wxGTKMemoryImplDC( wxMemoryDC *owner, wxBitmap& bitmap)
  36   : wxGTKWindowImplDC( owner )
  37 {
  38     Init();
  39     owner->SelectObject(bitmap);
  40 }
  41
  42 wxGTKMemoryImplDC::wxGTKMemoryImplDC( wxMemoryDC *owner, wxDC *WXUNUSED(dc) )
  43   : wxGTKWindowImplDC( owner )
  44 {
  45     Init();
  46 }
  47 #else
  48 wxMemoryDC::wxMemoryDC()
  49 {
  50     Init();
  51 }
  52
  53 wxMemoryDC::wxMemoryDC(wxBitmap& bitmap)
  54 {
  55     Init();
  56     SelectObject(bitmap);
  57 }
  58
  59 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  60   : wxWindowDC()
  61 {
  62     Init();
  63 }
  64 #endif
  65
  66 wxGTKMemoryImplDC::~wxGTKMemoryImplDC()
  67 {
  68     g_object_unref(m_context);
  69 }
  70
  71 void wxGTKMemoryImplDC::Init()
  72 {
  73     m_ok = false;
  74
  75     m_cmap = gtk_widget_get_default_colormap();
  76
  77     m_context = gdk_pango_context_get();
  78     // Note: The Sun customised version of Pango shipping with Solaris 10
  79     // crashes if the language is left NULL (see bug 1374114)
  80     pango_context_set_language( m_context, gtk_get_default_language() );
  81     m_layout = pango_layout_new( m_context );
  82     m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) );
  83 }
  84
  85 void wxGTKMemoryImplDC::DoSelect( const wxBitmap& bitmap )
  86 {
  87     Destroy();
  88
  89     m_selected = bitmap;
  90     if (m_selected.Ok())
  91     {
  92         m_window = m_selected.GetPixmap();
  93
  94         m_selected.PurgeOtherRepresentations(wxBitmap::Pixmap);
  95
  96         SetUpDC( true );
  97     }
  98     else
  99     {
 100         m_ok = false;
 101         m_window = (GdkWindow *) NULL;
 102     }
 103 }
 104
 105 void wxGTKMemoryImplDC::SetPen( const wxPen& penOrig )
 106 {
 107     wxPen pen( penOrig );
 108     if ( m_selected.Ok() &&
 109             m_selected.GetDepth() == 1 &&
 110                 (pen != *wxTRANSPARENT_PEN) )
 111     {
 112         pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
 113     }
 114
 115     wxGTKWindowImplDC::SetPen( pen );
 116 }
 117
 118 void wxGTKMemoryImplDC::SetBrush( const wxBrush& brushOrig )
 119 {
 120     wxBrush brush( brushOrig );
 121     if ( m_selected.Ok() &&
 122             m_selected.GetDepth() == 1 &&
 123                 (brush != *wxTRANSPARENT_BRUSH) )
 124     {
 125         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE);
 126     }
 127
 128     wxGTKWindowImplDC::SetBrush( brush );
 129 }
 130
 131 void wxGTKMemoryImplDC::SetBackground( const wxBrush& brushOrig )
 132 {
 133     wxBrush brush(brushOrig);
 134
 135     if ( m_selected.Ok() &&
 136             m_selected.GetDepth() == 1 &&
 137                 (brush != *wxTRANSPARENT_BRUSH) )
 138     {
 139         brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
 140     }
 141
 142     wxGTKWindowImplDC::SetBackground( brush );
 143 }
 144
 145 void wxGTKMemoryImplDC::SetTextForeground( const wxColour& col )
 146 {
 147     if ( m_selected.Ok() && m_selected.GetDepth() == 1 )
 148     {
 149         wxGTKWindowImplDC::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE);
 150     }
 151     else
 152     {
 153         wxGTKWindowImplDC::SetTextForeground( col );
 154     }
 155 }
 156
 157 void wxGTKMemoryImplDC::SetTextBackground( const wxColour &col )
 158 {
 159     if (m_selected.Ok() && m_selected.GetDepth() == 1)
 160     {
 161         wxGTKWindowImplDC::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE );
 162     }
 163     else
 164     {
 165         wxGTKWindowImplDC::SetTextBackground( col );
 166     }
 167 }
 168
 169 void wxGTKMemoryImplDC::DoGetSize( int *width, int *height ) const
 170 {
 171     if (m_selected.Ok())
 172     {
 173         if (width) (*width) = m_selected.GetWidth();
 174         if (height) (*height) = m_selected.GetHeight();
 175     }
 176     else
 177     {
 178         if (width) (*width) = 0;
 179         if (height) (*height) = 0;
 180     }
 181 }
 182
 183 wxBitmap wxGTKMemoryImplDC::DoGetAsBitmap(const wxRect *subrect) const
 184 {
 185     wxBitmap bmp = GetSelectedBitmap();
 186     return subrect ? bmp.GetSubBitmap(*subrect) : bmp;
 187 }
 188
 189 const wxBitmap& wxGTKMemoryImplDC::GetSelectedBitmap() const
 190 {
 191     return m_selected;
 192 }
 193
 194 wxBitmap& wxGTKMemoryImplDC::GetSelectedBitmap()
 195 {
 196     return m_selected;
 197 }
 198