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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 "config.h"
     21 #include "LocalCurrentGraphicsContext.h"
     22 
     23 #include "GraphicsContext.h"
     24 #include <AppKit/NSGraphicsContext.h>
     25 
     26 namespace WebCore {
     27 
     28 LocalCurrentGraphicsContext::LocalCurrentGraphicsContext(GraphicsContext* graphicsContext)
     29 {
     30     m_savedGraphicsContext = graphicsContext;
     31     graphicsContext->save();
     32 
     33     if (graphicsContext->platformContext() == [[NSGraphicsContext currentContext] graphicsPort]) {
     34         m_savedNSGraphicsContext = 0;
     35         return;
     36     }
     37 
     38     m_savedNSGraphicsContext = [[NSGraphicsContext currentContext] retain];
     39     NSGraphicsContext* newContext = [NSGraphicsContext graphicsContextWithGraphicsPort:graphicsContext->platformContext() flipped:YES];
     40     [NSGraphicsContext setCurrentContext:newContext];
     41 }
     42 
     43 LocalCurrentGraphicsContext::~LocalCurrentGraphicsContext()
     44 {
     45     m_savedGraphicsContext->restore();
     46 
     47     if (m_savedNSGraphicsContext) {
     48         [NSGraphicsContext setCurrentContext:m_savedNSGraphicsContext];
     49         [m_savedNSGraphicsContext release];
     50     }
     51 }
     52 
     53 }
     54