WebStringTruncator.mm   [plain text]

/*
* Copyright (C) 2005, 2006, 2014 Apple Inc. All rights reserved.
*
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* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
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* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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#import "WebStringTruncator.h"

#import <JavaScriptCore/InitializeThreading.h>
#import <WebCore/FontCascade.h>
#import <WebCore/FontPlatformData.h>
#import <WebCore/StringTruncator.h>
#import <wtf/MainThread.h>
#import <wtf/NeverDestroyed.h>

static WebCore::FontCascade& fontFromNSFont(NSFont *font)
{
static NeverDestroyed<RetainPtr<NSFont>> currentNSFont;
static NeverDestroyed<WebCore::FontCascade> currentFont;
if ([font isEqual:currentNSFont.get().get()])
return currentFont;
currentNSFont.get() = font;
currentFont.get() = WebCore::FontCascade(WebCore::FontPlatformData(reinterpret_cast<CTFontRef>(font), [font pointSize]));
return currentFont;
}

@implementation WebStringTruncator

+ (void)initialize
{
JSC::initializeThreading();
WTF::initializeMainThreadToProcessMainThread();
}

+ (NSString *)centerTruncateString:(NSString *)string toWidth:(float)maxWidth
{
static NSFont *menuFont = [[NSFont menuFontOfSize:0] retain];

ASSERT(menuFont);
if (!menuFont)
return nil;

return WebCore::StringTruncator::centerTruncate(string, maxWidth, fontFromNSFont(menuFont));
}

+ (NSString *)centerTruncateString:(NSString *)string toWidth:(float)maxWidth withFont:(NSFont *)font
{
if (!font)
return nil;

return WebCore::StringTruncator::centerTruncate(string, maxWidth, fontFromNSFont(font));
}

+ (NSString *)rightTruncateString:(NSString *)string toWidth:(float)maxWidth withFont:(NSFont *)font
{
if (!font)
return nil;

return WebCore::StringTruncator::rightTruncate(string, maxWidth, fontFromNSFont(font));
}

+ (float)widthOfString:(NSString *)string font:(NSFont *)font
{
if (!font)
return 0;

return WebCore::StringTruncator::width(string, fontFromNSFont(font));
}

@end