// 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/include/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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FX_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, FX_BOOL bRTL, FX_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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FX_BOOL bRTL,
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FX_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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