string_truncator.cc | Explore in Territory

/*
 * Copyright (C) 2005, 2006, 2007 Apple Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * 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
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Computer, 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
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/platform/fonts/string_truncator.h"

#include "third_party/blink/renderer/platform/fonts/font.h"
#include "third_party/blink/renderer/platform/text/text_break_iterator.h"
#include "third_party/blink/renderer/platform/text/text_run.h"
#include "third_party/blink/renderer/platform/wtf/text/character_names.h"

namespace blink {

#define STRING_BUFFER_SIZE …

TruncationFunction;

static inline int TextBreakAtOrPreceding(
    const NonSharedCharacterBreakIterator& it,
    int offset) { … }

static inline int BoundedTextBreakFollowing(
    const NonSharedCharacterBreakIterator& it,
    int offset,
    int length) { … }

static unsigned CenterTruncateToBuffer(const String& string,
                                       unsigned length,
                                       unsigned keep_count,
                                       UChar* buffer) { … }

static unsigned RightTruncateToBuffer(const String& string,
                                      unsigned length,
                                      unsigned keep_count,
                                      UChar* buffer) { … }

static float StringWidth(const Font& renderer,
                         const UChar* characters,
                         unsigned length) { … }

static String TruncateString(const String& string,
                             float max_width,
                             const Font& font,
                             TruncationFunction truncate_to_buffer) { … }

String StringTruncator::CenterTruncate(const String& string,
                                       float max_width,
                                       const Font& font) { … }

String StringTruncator::RightTruncate(const String& string,
                                      float max_width,
                                      const Font& font) { … }

}  // namespace blink
chromium/third_party/blink/renderer/platform/fonts/string_truncator.cc
