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67 lines
2.0 KiB
67 lines
2.0 KiB
// Copyright 2014 PDFium Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style license that can be |
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// found in the LICENSE file. |
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
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#include "core/fxcrt/fx_ucd.h" |
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uint32_t FX_GetUnicodeProperties(FX_WCHAR wch) { |
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size_t idx = static_cast<size_t>(wch); |
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if (idx < kTextLayoutCodePropertiesSize) |
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return kTextLayoutCodeProperties[(uint16_t)wch]; |
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return 0; |
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} |
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#ifdef PDF_ENABLE_XFA |
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bool FX_IsCtrlCode(FX_WCHAR ch) { |
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uint32_t dwRet = (FX_GetUnicodeProperties(ch) & FX_CHARTYPEBITSMASK); |
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return dwRet == FX_CHARTYPE_Tab || dwRet == FX_CHARTYPE_Control; |
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} |
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#endif // PDF_ENABLE_XFA |
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FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch, bool bRTL, bool bVertical) { |
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uint32_t dwProps = FX_GetUnicodeProperties(wch); |
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uint32_t dwTemp = (dwProps & 0xFF800000); |
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if (bRTL && dwTemp < 0xFF800000) { |
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size_t idx = dwTemp >> 23; |
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if (idx < kFXTextLayoutBidiMirrorSize) { |
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wch = kFXTextLayoutBidiMirror[idx]; |
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dwProps = FX_GetUnicodeProperties(wch); |
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} |
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} |
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if (bVertical) { |
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dwTemp = (dwProps & 0x007E0000); |
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if (dwTemp < 0x007E0000) { |
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size_t idx = dwTemp >> 17; |
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if (idx < kFXTextLayoutVerticalMirrorSize) |
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wch = kFXTextLayoutVerticalMirror[idx]; |
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} |
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} |
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return wch; |
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} |
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#ifdef PDF_ENABLE_XFA |
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FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch, |
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uint32_t dwProps, |
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bool bRTL, |
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bool bVertical) { |
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uint32_t dwTemp = (dwProps & 0xFF800000); |
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if (bRTL && dwTemp < 0xFF800000) { |
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size_t idx = dwTemp >> 23; |
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if (idx < kFXTextLayoutBidiMirrorSize) { |
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wch = kFXTextLayoutBidiMirror[idx]; |
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dwProps = FX_GetUnicodeProperties(wch); |
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} |
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} |
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if (bVertical) { |
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dwTemp = (dwProps & 0x007E0000); |
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if (dwTemp < 0x007E0000) { |
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size_t idx = dwTemp >> 17; |
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if (idx < kFXTextLayoutVerticalMirrorSize) |
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wch = kFXTextLayoutVerticalMirror[idx]; |
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} |
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} |
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return wch; |
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} |
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#endif // PDF_ENABLE_XFA
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