Fix crash in wxDC::GetMultiLineTextExtent() after last commit.

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

diff --git a/src/gtk/dcmemory.cpp b/src/gtk/dcmemory.cpp
index 6e6365b3ea92c7c3d9e21b64566597d4d36cae9d..1933d5000b24f5d7e27a26982c5622d2a7906d06 100644 (file)
--- a/src/gtk/dcmemory.cpp
+++ b/src/gtk/dcmemory.cpp
@@ -1,74 +1,142 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        dcmemory.cpp
+// Name:        src/gtk/dcmemory.cpp
 // Purpose:
 // Author:      Robert Roebling
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Robert Roebling
-// Licence:    wxWindows licence
+// 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/gtk/dcmemory.h"
 
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include <gtk/gtk.h>
 
 //-----------------------------------------------------------------------------
-// wxMemoryDC
+// wxMemoryDCImpl
 //-----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
+IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl, wxWindowDCImpl)
 
-wxMemoryDC::wxMemoryDC() : wxWindowDC()
+wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner )
+  : wxWindowDCImpl( owner )
 {
-    m_ok = FALSE;
-  
-    m_cmap = gtk_widget_get_default_colormap();
+    Init();
 }
 
-wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) ) 
-  : wxWindowDC()
+wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxBitmap& bitmap)
+  : wxWindowDCImpl( owner )
 {
-    m_ok = FALSE;
-  
-    m_cmap = gtk_widget_get_default_colormap();
+    Init();
+    DoSelect(bitmap);
 }
 
-wxMemoryDC::~wxMemoryDC()
+wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxDC *WXUNUSED(dc) )
+  : wxWindowDCImpl( owner )
 {
+    Init();
 }
 
-void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
+wxMemoryDCImpl::~wxMemoryDCImpl()
 {
+    g_object_unref(m_context);
+}
+
+void wxMemoryDCImpl::Init()
+{
+    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 ) );
+}
+
+void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap )
+{
+    Destroy();
+
     m_selected = bitmap;
-    if (m_selected.Ok())
+    if (m_selected.IsOk())
     {
-        if (m_selected.GetPixmap())
-        {
-            m_window = m_selected.GetPixmap();
-        }
-        else
-        {
-            m_window = m_selected.GetBitmap();
-        }
-    
-        SetUpDC();
-    
-        m_isMemDC = TRUE;
+        m_gdkwindow = m_selected.GetPixmap();
+
+        m_selected.PurgeOtherRepresentations(wxBitmap::Pixmap);
+
+        SetUpDC( true );
     }
     else
-    { 
-        m_ok = FALSE;
-        m_window = (GdkWindow *) NULL;
+    {
+        m_ok = false;
+        m_gdkwindow = NULL;
+    }
+}
+
+void wxMemoryDCImpl::SetPen( const wxPen& penOrig )
+{
+    wxPen pen( penOrig );
+    if ( m_selected.IsOk() &&
+            m_selected.GetDepth() == 1 &&
+                (pen != *wxTRANSPARENT_PEN) )
+    {
+        pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
+    }
+
+    wxWindowDCImpl::SetPen( pen );
+}
+
+void wxMemoryDCImpl::SetBrush( const wxBrush& brushOrig )
+{
+    wxBrush brush( brushOrig );
+    if ( m_selected.IsOk() &&
+            m_selected.GetDepth() == 1 &&
+                (brush != *wxTRANSPARENT_BRUSH) )
+    {
+        brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE);
     }
+
+    wxWindowDCImpl::SetBrush( brush );
+}
+
+void wxMemoryDCImpl::SetBackground( const wxBrush& brushOrig )
+{
+    wxBrush brush(brushOrig);
+
+    if ( m_selected.IsOk() &&
+            m_selected.GetDepth() == 1 &&
+                (brush != *wxTRANSPARENT_BRUSH) )
+    {
+        brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE );
+    }
+
+    wxWindowDCImpl::SetBackground( brush );
+}
+
+void wxMemoryDCImpl::SetTextForeground( const wxColour& col )
+{
+    if ( m_selected.IsOk() && m_selected.GetDepth() == 1 )
+        wxWindowDCImpl::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE);
+    else
+        wxWindowDCImpl::SetTextForeground( col );
+}
+
+void wxMemoryDCImpl::SetTextBackground( const wxColour &col )
+{
+    if (m_selected.IsOk() && m_selected.GetDepth() == 1)
+        wxWindowDCImpl::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE );
+    else
+        wxWindowDCImpl::SetTextBackground( col );
 }
 
-void wxMemoryDC::DoGetSize( int *width, int *height ) const
+void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const
 {
-    if (m_selected.Ok())
+    if (m_selected.IsOk())
     {
         if (width) (*width) = m_selected.GetWidth();
         if (height) (*height) = m_selected.GetHeight();
@@ -80,4 +148,24 @@ void wxMemoryDC::DoGetSize( int *width, int *height ) const
     }
 }
 
+wxBitmap wxMemoryDCImpl::DoGetAsBitmap(const wxRect *subrect) const
+{
+    wxBitmap bmp = GetSelectedBitmap();
+    return subrect ? bmp.GetSubBitmap(*subrect) : bmp;
+}
 
+const wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() const
+{
+    return m_selected;
+}
+
+wxBitmap& wxMemoryDCImpl::GetSelectedBitmap()
+{
+    return m_selected;
+}
+
+void* wxMemoryDCImpl::GetHandle() const
+{
+    const wxBitmap& bmp = GetSelectedBitmap();
+    return bmp.GetPixmap();
+}