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      1 /*
      2  * Copyright (C) 2006 Apple Computer, Inc.
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  */
     19 
     20 #include <wtf/Noncopyable.h>
     21 
     22 #ifdef __OBJC__
     23 @class NSGraphicsContext;
     24 #else
     25 class NSGraphicsContext;
     26 #endif
     27 
     28 namespace WebCore {
     29 
     30 class GraphicsContext;
     31 
     32 // This class automatically saves and restores the current NSGraphicsContext for
     33 // functions which call out into AppKit and rely on the currentContext being set
     34 class LocalCurrentGraphicsContext {
     35     WTF_MAKE_NONCOPYABLE(LocalCurrentGraphicsContext);
     36 public:
     37     LocalCurrentGraphicsContext(GraphicsContext* graphicsContext);
     38     ~LocalCurrentGraphicsContext();
     39 
     40 private:
     41     GraphicsContext* m_savedGraphicsContext;
     42     NSGraphicsContext* m_savedNSGraphicsContext;
     43 };
     44 
     45 }
     46