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1/*
2 * Copyright (C) 2005, 2006 Apple Computer, Inc.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#import "WebStringTruncator.h"
30
31#import "WebSystemInterface.h"
32#import <WebCore/Font.h>
33#import <WebCore/FontPlatformData.h>
34#import <WebCore/PlatformString.h>
35#import <WebCore/StringTruncator.h>
36#import <wtf/StdLibExtras.h>
37
38using namespace WebCore;
39
40static NSFont *defaultMenuFont()
41{
42    static NSFont *defaultMenuFont = nil;
43    if (!defaultMenuFont) {
44        defaultMenuFont = [NSFont menuFontOfSize:0];
45        CFRetain(defaultMenuFont);
46    }
47    return defaultMenuFont;
48}
49
50static Font& fontFromNSFont(NSFont *font)
51{
52    static NSFont *currentFont;
53    DEFINE_STATIC_LOCAL(Font, currentRenderer, ());
54
55    if ([font isEqual:currentFont])
56        return currentRenderer;
57    if (currentFont)
58        CFRelease(currentFont);
59    currentFont = font;
60    CFRetain(currentFont);
61    FontPlatformData f(font, [font pointSize]);
62    currentRenderer = Font(f, ![[NSGraphicsContext currentContext] isDrawingToScreen]);
63    return currentRenderer;
64}
65
66@implementation WebStringTruncator
67
68+ (void)initialize
69{
70    InitWebCoreSystemInterface();
71}
72
73+ (NSString *)centerTruncateString:(NSString *)string toWidth:(float)maxWidth
74{
75    return StringTruncator::centerTruncate(string, maxWidth, fontFromNSFont(defaultMenuFont()));
76}
77
78+ (NSString *)centerTruncateString:(NSString *)string toWidth:(float)maxWidth withFont:(NSFont *)font
79{
80    return StringTruncator::centerTruncate(string, maxWidth, fontFromNSFont(font));
81}
82
83+ (NSString *)rightTruncateString:(NSString *)string toWidth:(float)maxWidth withFont:(NSFont *)font
84{
85    return StringTruncator::rightTruncate(string, maxWidth, fontFromNSFont(font));
86}
87
88+ (float)widthOfString:(NSString *)string font:(NSFont *)font
89{
90    return StringTruncator::width(string, fontFromNSFont(font));
91}
92
93@end
94