O2D:...

core/cross/cairo/pattern.cc

 /*
  * 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 55 matching lines @@
                                     double blue,
                                     double alpha) {
   return WrapCairoPattern(pack,
       cairo_pattern_create_rgba(red, green, blue, alpha));
 }
 
 Pattern::~Pattern() {
   cairo_pattern_destroy(pattern_);
 }
 
+void Pattern::SetAffineTransform(double xx,
+                                 double yx,
+                                 double xy,
+                                 double yy,
+                                 double x0,
+                                 double y0) {
+  cairo_matrix_t matrix;
+  cairo_matrix_init(&matrix, xx, yx, xy, yy, x0, y0);
+  cairo_pattern_set_matrix(pattern_, &matrix);
+}
+
 Pattern::Pattern(ServiceLocator* service_locator, cairo_pattern_t* pattern)
     : ObjectBase(service_locator),
       pattern_(pattern) {
 }
 
 Pattern* Pattern::WrapCairoPattern(Pack* pack, cairo_pattern_t* pattern) {
   cairo_status_t status = cairo_pattern_status(pattern);
   if (CAIRO_STATUS_SUCCESS != status) {
     DLOG(ERROR) << "Error creating Cairo pattern: " << status;
     cairo_pattern_destroy(pattern);
     return NULL;
   }
   Pattern* p = new Pattern(pack->service_locator(), pattern);
   pack->RegisterObject(p);
   return p;
 }
 
 }  // namespace o2d
 
 }  // namespace o3d