Add the xrender backend to the window manager.

x11/x_connection.h

 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WINDOW_MANAGER_X11_X_CONNECTION_H_
 #define WINDOW_MANAGER_X11_X_CONNECTION_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/time.h"
 #include "window_manager/geometry.h"
+#include "window_manager/image_container.h"
 #include "window_manager/image_enums.h"
+#include "window_manager/math_types.h"
 #include "window_manager/x11/x_types.h"
 
 namespace window_manager {
 
 class ByteMap;  // from util.h
 struct Rect;
 template<class T> class Stacker;  // from util.h
 
 // This is an abstract base class representing a connection to the X
 // server.
@@ skipping 510 matching lines @@
   }
 
   // Query the pointer's current position relative to the root window.
   virtual bool QueryPointerPosition(Point* absolute_pos_out) = 0;
 
   // Set the background pixmap of a window.  This is tiled across the window
   // automatically by the server when the window is exposed.  Set to 'None'
   // to disable automatic window-clearing by the server.
   virtual bool SetWindowBackgroundPixmap(XWindow xid, XPixmap pixmap) = 0;
 
+  // Query the presence of the Render extension.
+  virtual bool RenderQueryExtension() = 0;
+
+  // Create an XRender Picture.
+  virtual XPicture RenderCreatePicture(XDrawable drawable, int depth) = 0;
+
+  // Create an XPixmap from |container|.
+  virtual XPixmap CreatePixmapFromContainer(
+      const ImageContainer& container) = 0;
+
+  // Perform an XRender Composite operation.
+  virtual void RenderComposite(bool blend,
+                               XPicture src,
+                               XPicture mask,
+                               XPicture dst,
+                               const Point& srcpos,
+                               const Point& maskpos,
+                               const Matrix4& transform,
+                               const Size& size) = 0;
+
+  // Free an XRender Picture.
+  virtual bool RenderFreePicture(XPicture pict) = 0;
+
+  // Do an XRender solid fill.
+  virtual void RenderFillRectangle(XPicture dst,
+                                   float red,
+                                   float green,
+                                   float blue,
+                                   const Point& pos,
+                                   const Size& size) = 0;
+
   // Value that should be used in event and property |format| fields for
   // byte and long arguments.
   static const int kByteFormat;
   static const int kLongFormat;
 
   // Maximum allowed onscreen position.  Hardcoded in the X protocol.
   static const int kMaxPosition;
 
  protected:
   // Base IDs for extension events.  Implementations should initialize
@@ skipping 12 matching lines @@
 
   // Time at which the server grab started.
   base::TimeTicks server_grab_time_;
 
   DISALLOW_COPY_AND_ASSIGN(XConnection);
 };
 
 }  // namespace window_manager
 
 #endif  // WINDOW_MANAGER_X11_X_CONNECTION_H_