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63 lines
2.6 KiB
C++
63 lines
2.6 KiB
C++
/*
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* Copyright (C) 2013 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "flutter/sky/engine/platform/text/BidiTextRun.h"
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#include "flutter/sky/engine/platform/text/BidiResolver.h"
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#include "flutter/sky/engine/platform/text/TextRunIterator.h"
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namespace blink {
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TextDirection directionForRun(TextRun& run, bool& hasStrongDirectionality) {
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BidiResolver<TextRunIterator, BidiCharacterRun> bidiResolver;
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bidiResolver.setStatus(
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BidiStatus(run.direction(), run.directionalOverride()));
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bidiResolver.setPositionIgnoringNestedIsolates(TextRunIterator(&run, 0));
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return bidiResolver.determineParagraphDirectionality(
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&hasStrongDirectionality);
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}
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TextDirection determineDirectionality(const String& value,
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bool& hasStrongDirectionality) {
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TextRun run(value);
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return directionForRun(run, hasStrongDirectionality);
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}
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TextRun textRunWithDirectionality(const String& value,
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bool& hasStrongDirectionality) {
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TextRun run(value);
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TextDirection direction = directionForRun(run, hasStrongDirectionality);
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if (hasStrongDirectionality)
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run.setDirection(direction);
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return run;
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}
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} // namespace blink
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