diff -Naurp cairomm-1.8.0.orig/cairomm/context.cc cairomm-1.8.0/cairomm/context.cc
--- cairomm-1.8.0.orig/cairomm/context.cc	2008-12-20 19:37:46.000000000 +0200
+++ cairomm-1.8.0/cairomm/context.cc	2009-06-09 11:43:40.000000000 +0300
@@ -209,12 +209,24 @@ void Context::transform(const Matrix& ma
   check_object_status_and_throw_exception(*this);
 }
 
+void Context::transform(const cairo_matrix_t& matrix)
+{
+  cairo_transform(cobj(), &matrix);
+  check_object_status_and_throw_exception(*this);
+}
+
 void Context::set_matrix(const Matrix& matrix)
 {
   cairo_set_matrix(cobj(), &matrix);
   check_object_status_and_throw_exception(*this);
 }
 
+void Context::set_matrix(const cairo_matrix_t& matrix)
+{
+  cairo_set_matrix(cobj(), &matrix);
+  check_object_status_and_throw_exception(*this);
+}
+
 void Context::set_identity_matrix()
 {
   cairo_identity_matrix(cobj());
@@ -467,12 +479,24 @@ void Context::set_font_matrix(const Matr
   check_object_status_and_throw_exception(*this);
 }
 
+void Context::set_font_matrix(const cairo_matrix_t& matrix)
+{
+  cairo_set_font_matrix(cobj(), &matrix);
+  check_object_status_and_throw_exception(*this);
+}
+
 void Context::get_font_matrix(Matrix& matrix) const
 {
   cairo_get_font_matrix(const_cast<cobject*>(cobj()), &matrix);
   check_object_status_and_throw_exception(*this);
 }
 
+void Context::get_font_matrix(cairo_matrix_t& matrix) const
+{
+  cairo_get_font_matrix(const_cast<cobject*>(cobj()), &matrix);
+  check_object_status_and_throw_exception(*this);
+}
+
 void Context::set_font_options(const FontOptions& options)
 {
   cairo_set_font_options(cobj(), options.cobj());
@@ -698,6 +722,12 @@ void Context::get_matrix(Matrix& matrix)
   check_object_status_and_throw_exception(*this);
 }
 
+void Context::get_matrix(cairo_matrix_t& matrix)
+{
+  cairo_get_matrix(cobj(), &matrix);
+  check_object_status_and_throw_exception(*this);
+}
+
 Matrix Context::get_matrix() const
 {
   Cairo::Matrix m;
diff -Naurp cairomm-1.8.0.orig/cairomm/context.h cairomm-1.8.0/cairomm/context.h
--- cairomm-1.8.0.orig/cairomm/context.h	2008-12-20 19:37:46.000000000 +0200
+++ cairomm-1.8.0/cairomm/context.h	2009-06-09 11:33:49.000000000 +0300
@@ -307,6 +307,9 @@ public:
    */
   void transform(const Matrix& matrix);
 
+  /* To keep 1.6.x ABI  */
+  void transform(const cairo_matrix_t& matrix);
+
   /** Modifies the current transformation matrix (CTM) by setting it equal to
    * matrix.
    *
@@ -314,6 +317,9 @@ public:
    */
   void set_matrix(const Matrix& matrix);
 
+  /* To keep 1.6.x ABI  */
+  void set_matrix(const cairo_matrix_t& matrix);
+
   /** Resets the current transformation matrix (CTM) by setting it equal to the
    * identity matrix. That is, the user-space and device-space axes will be
    * aligned and one user-space unit will transform to one device-space unit.
@@ -703,6 +709,10 @@ public:
   void get_font_matrix(Matrix& matrix) const;
   void set_font_options(const FontOptions& options);
 
+  /* To keep 1.6.x ABI  */
+  void set_font_matrix(const cairo_matrix_t& matrix);
+  void get_font_matrix(cairo_matrix_t& matrix) const;
+
   //TODO: Documentation.
   /**
    * @since 1.8
@@ -815,6 +825,10 @@ public:
    * @param matrix	return value for the matrix
    */
   void get_matrix(Matrix& matrix);
+
+  /* To keep 1.6.x ABI  */
+  void get_matrix(cairo_matrix_t& matrix);
+
   /** @since 1.8
    */
   Matrix get_matrix() const;
diff -Naurp cairomm-1.8.0.orig/cairomm/pattern.cc cairomm-1.8.0/cairomm/pattern.cc
--- cairomm-1.8.0.orig/cairomm/pattern.cc	2008-12-20 19:37:46.000000000 +0200
+++ cairomm-1.8.0/cairomm/pattern.cc	2009-06-09 11:17:09.000000000 +0300
@@ -65,6 +65,18 @@ void Pattern::get_matrix(Matrix& matrix)
   check_object_status_and_throw_exception(*this);
 }
 
+void Pattern::set_matrix(const cairo_matrix_t& matrix)
+{
+  cairo_pattern_set_matrix(m_cobject, (cairo_matrix_t*)&matrix);
+  check_object_status_and_throw_exception(*this);
+}
+
+void Pattern::get_matrix(cairo_matrix_t& matrix) const
+{
+  cairo_pattern_get_matrix(m_cobject, (cairo_matrix_t*)&matrix);
+  check_object_status_and_throw_exception(*this);
+}
+
 Matrix Pattern::get_matrix() const
 {
   Cairo::Matrix m;
diff -Naurp cairomm-1.8.0.orig/cairomm/pattern.h cairomm-1.8.0/cairomm/pattern.h
--- cairomm-1.8.0.orig/cairomm/pattern.h	2008-12-20 19:37:46.000000000 +0200
+++ cairomm-1.8.0/cairomm/pattern.h	2009-06-09 11:16:15.000000000 +0300
@@ -59,6 +59,9 @@ public:
   /** @since 1.8
    */
   Matrix get_matrix() const;
+  /* To keep 1.6.x ABI  */
+  void set_matrix(const cairo_matrix_t& matrix);
+  void get_matrix(cairo_matrix_t& matrix) const;
   PatternType get_type() const;
 
   typedef cairo_pattern_t cobject;
diff -Naurp cairomm-1.8.0.orig/cairomm/scaledfont.cc cairomm-1.8.0/cairomm/scaledfont.cc
--- cairomm-1.8.0.orig/cairomm/scaledfont.cc	2008-12-20 19:37:46.000000000 +0200
+++ cairomm-1.8.0/cairomm/scaledfont.cc	2009-06-09 11:27:18.000000000 +0300
@@ -31,8 +31,8 @@ ScaledFont::ScaledFont(cobject* cobj, bo
     m_cobject = cairo_scaled_font_reference(cobj);
 }
 
-ScaledFont::ScaledFont(const RefPtr<FontFace>& font_face, const Matrix& font_matrix,
-                       const Matrix& ctm, const FontOptions& options)
+ScaledFont::ScaledFont(const RefPtr<FontFace>& font_face, const cairo_matrix_t& font_matrix,
+                       const cairo_matrix_t& ctm, const FontOptions& options)
 {
   m_cobject =
     cairo_scaled_font_create(font_face->cobj(),
@@ -54,6 +54,12 @@ RefPtr<ScaledFont> ScaledFont::create(co
   return RefPtr<ScaledFont>(new ScaledFont(font_face, font_matrix, ctm, options));
 }
 
+RefPtr<ScaledFont> ScaledFont::create(const RefPtr<FontFace>& font_face, const cairo_matrix_t& font_matrix,
+    const cairo_matrix_t& ctm, const FontOptions& options)
+{
+  return RefPtr<ScaledFont>(new ScaledFont(font_face, font_matrix, ctm, options));
+}
+
 void ScaledFont::extents(FontExtents& extents) const
 {
   cairo_scaled_font_extents(m_cobject, static_cast<cairo_font_extents_t*>(&extents));
@@ -103,12 +109,25 @@ void ScaledFont::get_font_matrix(Matrix&
   check_object_status_and_throw_exception(*this);
 }
 
+void ScaledFont::get_font_matrix(cairo_matrix_t& font_matrix) const
+{
+  cairo_scaled_font_get_font_matrix(m_cobject,
+                                    &font_matrix);
+  check_object_status_and_throw_exception(*this);
+}
+
 void ScaledFont::get_ctm(Matrix& ctm) const
 {
   cairo_scaled_font_get_ctm(m_cobject, &ctm);
   check_object_status_and_throw_exception(*this);
 }
 
+void ScaledFont::get_ctm(cairo_matrix_t& ctm) const
+{
+  cairo_scaled_font_get_ctm(m_cobject, &ctm);
+  check_object_status_and_throw_exception(*this);
+}
+
 FontType ScaledFont::get_type() const
 {
   cairo_font_type_t font_type = cairo_scaled_font_get_type(m_cobject);
diff -Naurp cairomm-1.8.0.orig/cairomm/scaledfont.h cairomm-1.8.0/cairomm/scaledfont.h
--- cairomm-1.8.0.orig/cairomm/scaledfont.h	2008-12-20 19:37:46.000000000 +0200
+++ cairomm-1.8.0/cairomm/scaledfont.h	2009-06-09 11:27:18.000000000 +0300
@@ -82,6 +82,9 @@ public: 
    */
   static RefPtr<ScaledFont> create(const RefPtr<FontFace>& font_face, const Matrix& font_matrix,
       const Matrix& ctm, const FontOptions& options = FontOptions());
+  /* To keep 1.6.x ABI  */
+  static RefPtr<ScaledFont> create(const RefPtr<FontFace>& font_face, const cairo_matrix_t& font_matrix,
+      const cairo_matrix_t& ctm, const FontOptions& options = FontOptions());
   // NOTE: the constructor doesn't take a RefPtr<const FontFace> because the
   // FontFace object can be changed in this constructor (in the case of user
   // fonts, the FontFace becomes immutable, i.e. you can't call any set_*_func()
@@ -164,11 +167,15 @@ public: 
    * @since 1.2
    */
   void get_font_matrix(Matrix& font_matrix) const;
+  /* To keep 1.6.x ABI  */
+  void get_font_matrix(cairo_matrix_t& font_matrix) const;
 
   /** Gets the CTM with which the ScaledFont was created.
    * @since 1.2
    */
   void get_ctm(Matrix& ctm) const;
+  /* To keep 1.6.x ABI  */
+  void get_ctm(cairo_matrix_t& ctm) const;
 
   /** Gets the type of scaled Font
    * @since 1.2
@@ -215,8 +222,9 @@ public: 
   void get_scale_matrix(Matrix& scale_matrix) const;
 
 protected:
-  ScaledFont(const RefPtr<FontFace>& font_face, const Matrix& font_matrix,
-             const Matrix& ctm, const FontOptions& options = FontOptions());
+  /* Cairo::Matrix parameters changed to cairo_matrix_t */
+  ScaledFont(const RefPtr<FontFace>& font_face, const cairo_matrix_t& font_matrix,
+             const cairo_matrix_t& ctm, const FontOptions& options = FontOptions());
   /** The underlying C cairo object that is wrapped by this ScaledFont */
   cobject* m_cobject;
 };