1/* 2 * Copyright (C) 2006 Apple 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 <AppKit/NSGraphicsContext.h> 24 25namespace WebCore { 26 27LocalCurrentGraphicsContext::LocalCurrentGraphicsContext(GraphicsContext* graphicsContext) 28 : m_didSetGraphicsContext(false) 29{ 30 m_savedGraphicsContext = graphicsContext; 31 graphicsContext->save(); 32 33 CGContextRef cgContext = this->cgContext(); 34 if (cgContext == [[NSGraphicsContext currentContext] graphicsPort]) { 35 m_savedNSGraphicsContext = 0; 36 return; 37 } 38 39 m_savedNSGraphicsContext = [[NSGraphicsContext currentContext] retain]; 40 NSGraphicsContext* newContext = [NSGraphicsContext graphicsContextWithGraphicsPort:cgContext flipped:YES]; 41 [NSGraphicsContext setCurrentContext:newContext]; 42 m_didSetGraphicsContext = true; 43} 44 45LocalCurrentGraphicsContext::~LocalCurrentGraphicsContext() 46{ 47 if (m_didSetGraphicsContext) { 48 [NSGraphicsContext setCurrentContext:m_savedNSGraphicsContext]; 49 [m_savedNSGraphicsContext release]; 50 } 51 52 m_savedGraphicsContext->restore(); 53} 54 55CGContextRef LocalCurrentGraphicsContext::cgContext() 56{ 57 CGContextRef cgContext = m_savedGraphicsContext->platformContext(); 58 return cgContext; 59} 60 61} 62