1/*
2 * Copyright (C) 2005, 2006, 2014 Apple 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 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/FontCache.h>
34#import <WebCore/FontPlatformData.h>
35#import <WebCore/StringTruncator.h>
36#import <runtime/InitializeThreading.h>
37#import <wtf/MainThread.h>
38#import <wtf/NeverDestroyed.h>
39
40static WebCore::Font& fontFromNSFont(NSFont *font)
41{
42    static NeverDestroyed<RetainPtr<NSFont>> currentNSFont;
43    static NeverDestroyed<WebCore::Font> currentFont;
44    if ([font isEqual:currentNSFont.get().get()])
45        return currentFont;
46    currentNSFont.get() = font;
47    currentFont.get() = WebCore::Font(WebCore::FontPlatformData(font, [font pointSize]), ![[NSGraphicsContext currentContext] isDrawingToScreen]);
48    return currentFont;
49}
50
51@implementation WebStringTruncator
52
53+ (void)initialize
54{
55    InitWebCoreSystemInterface();
56    JSC::initializeThreading();
57    WTF::initializeMainThreadToProcessMainThread();
58}
59
60+ (NSString *)centerTruncateString:(NSString *)string toWidth:(float)maxWidth
61{
62    static NeverDestroyed<RetainPtr<NSFont>> menuFont = [NSFont menuFontOfSize:0];
63    WebCore::FontCachePurgePreventer fontCachePurgePreventer;
64    return WebCore::StringTruncator::centerTruncate(string, maxWidth, fontFromNSFont(menuFont.get().get()));
65}
66
67+ (NSString *)centerTruncateString:(NSString *)string toWidth:(float)maxWidth withFont:(NSFont *)font
68{
69    WebCore::FontCachePurgePreventer fontCachePurgePreventer;
70    return WebCore::StringTruncator::centerTruncate(string, maxWidth, fontFromNSFont(font));
71}
72
73+ (NSString *)rightTruncateString:(NSString *)string toWidth:(float)maxWidth withFont:(NSFont *)font
74{
75    WebCore::FontCachePurgePreventer fontCachePurgePreventer;
76    return WebCore::StringTruncator::rightTruncate(string, maxWidth, fontFromNSFont(font));
77}
78
79+ (float)widthOfString:(NSString *)string font:(NSFont *)font
80{
81    WebCore::FontCachePurgePreventer fontCachePurgePreventer;
82    return WebCore::StringTruncator::width(string, fontFromNSFont(font));
83}
84
85@end
86