O2D:...

core/cross/cairo/pattern.h

 /*
  * Copyright 2010, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 51 matching lines @@
   static Pattern* CreateRgbaPattern(Pack* pack,
                                     double red,
                                     double green,
                                     double blue,
                                     double alpha);
 
   virtual ~Pattern();
 
   cairo_pattern_t* pattern() const { return pattern_; }
 
+  // Set the affine transformation matrix that maps user space to pattern space.
+  // The default matrix is the identity matrix, so that no transformation
+  // occurs.
+  void SetAffineTransform(double xx,
+                          double yx,
+                          double xy,
+                          double yy,
+                          double x0,
+                          double y0);
+
  private:
   Pattern(ServiceLocator* service_locator, cairo_pattern_t* pattern);
 
   static Pattern* WrapCairoPattern(Pack* pack, cairo_pattern_t* pattern);
 
   cairo_pattern_t* pattern_;
 
   O3D_DECL_CLASS(Pattern, ObjectBase)
 };  // Pattern
 
 }  // namespace o2d
 
 }  // namespace o3d
 
 #endif  // O3D_CORE_CROSS_CAIRO_PATTERN_H_