avoiding nesting dcs on the same window concurrently

[wxWidgets.git] / src / gtk / dcmemory.cpp

diff --git a/src/gtk/dcmemory.cpp b/src/gtk/dcmemory.cpp
index 804ba3e3a382163af794e76ac6bfe92f81726ebd..f24a06e95eb971cae9f656d265781f7366bd6698 100644 (file)
--- a/src/gtk/dcmemory.cpp
+++ b/src/gtk/dcmemory.cpp
@@ -1,68 +1,157 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        dcmemory.cpp
+// Name:        src/gtk/dcmemory.cpp

 // Purpose:
 // Author:      Robert Roebling
 // Purpose:
 // Author:      Robert Roebling

-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence:    wxWindows licence
+// RCS-ID:      $Id$
+// Copyright:   (c) 1998 Robert Roebling
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "dcmemory.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"

 
 #include "wx/dcmemory.h"
 
 
 #include "wx/dcmemory.h"
 

+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+

 //-----------------------------------------------------------------------------
 // wxMemoryDC
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 // wxMemoryDC
 //-----------------------------------------------------------------------------
 

-IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxPaintDC)
+IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)

 
 

-wxMemoryDC::wxMemoryDC(void)
+wxMemoryDC::wxMemoryDC( const wxBitmap& bitmap )
+   : wxWindowDC()

 {
 {

-  m_ok = FALSE;
-  m_cmap = gdk_colormap_get_system();
-};
+    m_ok = false;
+
+    m_cmap = gtk_widget_get_default_colormap();
+
+    m_context = gdk_pango_context_get();
+    // Note: The Sun customised version of Pango shipping with Solaris 10
+    // crashes if the language is left NULL (see bug 1374114)
+    pango_context_set_language( m_context, gtk_get_default_language() );
+    m_layout = pango_layout_new( m_context );
+    m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) );
+
+    if ( bitmap.IsOk() )
+        SelectObject(bitmap);
+}

 
 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
 
 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )

+  : wxWindowDC()

 {
 {

-  m_ok = FALSE;
-  m_cmap = gdk_colormap_get_system();
-};
+    m_ok = false;
+
+    m_cmap = gtk_widget_get_default_colormap();
+
+    m_context = gdk_pango_context_get();
+    pango_context_set_language( m_context, gtk_get_default_language() );
+    m_layout = pango_layout_new( m_context );
+    m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) );
+}

 
 

-wxMemoryDC::~wxMemoryDC(void)
+wxMemoryDC::~wxMemoryDC()

 {
 {

-};
+    g_object_unref(m_context);
+}

 
 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
 {
 
 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
 {

-  m_selected = bitmap;
-  if (m_selected.Ok())
-  {
-    m_window = m_selected.GetPixmap();
-    SetUpDC();
-  }
-  else
-  {
-    m_ok = FALSE;
-    m_window = NULL;
-  };
-};
-
-void wxMemoryDC::GetSize( int *width, int *height )
+    Destroy();
+    m_selected = bitmap;
+    if (m_selected.Ok())
+    {
+        m_window = m_selected.GetPixmap();
+
+        m_selected.PurgeOtherRepresentations(wxBitmap::Pixmap);
+
+        m_isMemDC = true;
+
+        SetUpDC();
+    }
+    else
+    {
+        m_ok = false;
+        m_window = (GdkWindow *) NULL;
+    }
+}
+
+void wxMemoryDC::SetPen( const wxPen& penOrig )
+{
+    wxPen pen( penOrig );
+    if ( m_selected.Ok() &&
+            m_selected.GetDepth() == 1 &&
+                (pen != *wxTRANSPARENT_PEN) )
+    {
+        pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
+    }
+
+    wxWindowDC::SetPen( pen );
+}
+
+void wxMemoryDC::SetBrush( const wxBrush& brushOrig )
+{
+    wxBrush brush( brushOrig );
+    if ( m_selected.Ok() &&
+            m_selected.GetDepth() == 1 &&
+                (brush != *wxTRANSPARENT_BRUSH) )
+    {
+        brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE);
+    }
+
+    wxWindowDC::SetBrush( brush );
+}
+
+void wxMemoryDC::SetBackground( const wxBrush& brushOrig )

 {
 {

-  if (m_selected.Ok())
-  {
-    if (width) (*width) = m_selected.GetWidth();
-    if (height) (*height) = m_selected.GetHeight();
-  }
-  else
-  {
-    if (width) (*width) = 0;
-    if (height) (*height) = 0;
-  };
-};
+    wxBrush brush(brushOrig);
+
+    if ( m_selected.Ok() &&
+            m_selected.GetDepth() == 1 &&
+                (brush != *wxTRANSPARENT_BRUSH) )
+    {
+        brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
+    }

 
 

+    wxWindowDC::SetBackground( brush );
+}

 
 

+void wxMemoryDC::SetTextForeground( const wxColour& col )
+{
+    if ( m_selected.Ok() && m_selected.GetDepth() == 1 )
+    {
+        wxWindowDC::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE);
+    }
+    else
+    {
+        wxWindowDC::SetTextForeground( col );
+    }
+}
+
+void wxMemoryDC::SetTextBackground( const wxColour &col )
+{
+    if (m_selected.Ok() && m_selected.GetDepth() == 1)
+    {
+        wxWindowDC::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE );
+    }
+    else
+    {
+        wxWindowDC::SetTextBackground( col );
+    }
+}
+
+void wxMemoryDC::DoGetSize( int *width, int *height ) const
+{
+    if (m_selected.Ok())
+    {
+        if (width) (*width) = m_selected.GetWidth();
+        if (height) (*height) = m_selected.GetHeight();
+    }
+    else
+    {
+        if (width) (*width) = 0;
+        if (height) (*height) = 0;
+    }
+}