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