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