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-rw-r--r--core/src/fpdftext/fpdf_text.cpp7
-rw-r--r--core/src/fpdftext/fpdf_text_int.cpp71
2 files changed, 77 insertions, 1 deletions
diff --git a/core/src/fpdftext/fpdf_text.cpp b/core/src/fpdftext/fpdf_text.cpp
index defad925b9..f633e19517 100644
--- a/core/src/fpdftext/fpdf_text.cpp
+++ b/core/src/fpdftext/fpdf_text.cpp
@@ -184,7 +184,12 @@ CTextBaseLine* CTextPage::InsertTextBox(CTextBaseLine* pBaseLine, FX_FLOAT basey
while (offset < len) {
FX_DWORD ch = pFont->GetNextChar(pStr, offset);
CFX_WideString unicode_str = pFont->UnicodeFromCharCode(ch);
- text += unicode_str;
+ if (unicode_str.IsEmpty()) {
+ text += (FX_WCHAR)ch;
+ }
+ else {
+ text += unicode_str;
+ }
}
pBaseLine->InsertTextBox(leftx, rightx, topy, bottomy, spacew, fontsize_v, text);
return pBaseLine;
diff --git a/core/src/fpdftext/fpdf_text_int.cpp b/core/src/fpdftext/fpdf_text_int.cpp
index de4c703a04..5b174f0187 100644
--- a/core/src/fpdftext/fpdf_text_int.cpp
+++ b/core/src/fpdftext/fpdf_text_int.cpp
@@ -1682,6 +1682,53 @@ void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj)
baseSpace = 0.0;
}
}
+
+ FX_BOOL bIsBidiAndMirrosInverse = FALSE;
+ IFX_BidiChar* BidiChar = IFX_BidiChar::Create();
+ FX_INT32 nR2L = 0;
+ FX_INT32 nL2R = 0;
+ FX_INT32 start = 0, count = 0;
+ CPDF_TextObjectItem item;
+ for (FX_INT32 i = 0; i < nItems; i++) {
+ pTextObj->GetItemInfo(i, &item);
+ if (item.m_CharCode == (FX_DWORD)-1) {
+ continue;
+ }
+ CFX_WideString wstrItem = pFont->UnicodeFromCharCode(item.m_CharCode);
+ FX_WCHAR wChar = wstrItem.GetAt(0);
+ if ((wstrItem.IsEmpty() || wChar == 0) && item.m_CharCode) {
+ wChar = (FX_WCHAR)item.m_CharCode;
+ }
+ if (!wChar) {
+ continue;
+ }
+ if (BidiChar && BidiChar->AppendChar(wChar)) {
+ FX_INT32 ret = BidiChar->GetBidiInfo(start, count);
+ if (ret == 2) {
+ nR2L++;
+ }
+ else if (ret == 1) {
+ nL2R++;
+ }
+ }
+ }
+ if (BidiChar && BidiChar->EndChar()) {
+ FX_INT32 ret = BidiChar->GetBidiInfo(start, count);
+ if (ret == 2) {
+ nR2L++;
+ }
+ else if (ret == 1) {
+ nL2R++;
+ }
+ }
+ FX_BOOL bR2L = FALSE;
+ if (nR2L > 0 && nR2L >= nL2R) {
+ bR2L = TRUE;
+ }
+ bIsBidiAndMirrosInverse = bR2L && (matrix.a * matrix.d - matrix.b * matrix.c) < 0;
+ FX_INT32 iBufStartAppend = m_TempTextBuf.GetLength();
+ FX_INT32 iCharListStartAppend = m_TempCharList.GetSize();
+
for (int i = 0; i < nItems; i++) {
CPDF_TextObjectItem item;
PAGECHAR_INFO charinfo;
@@ -1828,6 +1875,30 @@ void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj)
}
}
}
+ if (bIsBidiAndMirrosInverse) {
+ FX_INT32 i, j;
+ i = iCharListStartAppend;
+ j = m_TempCharList.GetSize() - 1;
+ PAGECHAR_INFO tempCharInfo;
+ FX_INT32 tempIndex = 0;
+ for (; i < j; i++, j--) {
+ tempCharInfo = m_TempCharList[i];
+ m_TempCharList[i] = m_TempCharList[j];
+ m_TempCharList[j] = tempCharInfo;
+ tempIndex = m_TempCharList[i].m_Index;
+ m_TempCharList[i].m_Index = m_TempCharList[j].m_Index;
+ m_TempCharList[j].m_Index = tempIndex;
+ }
+ FX_WCHAR * pTempBuffer = m_TempTextBuf.GetBuffer();
+ i = iBufStartAppend;
+ j = m_TempTextBuf.GetLength() - 1;
+ FX_WCHAR wTemp;
+ for (; i < j; i++, j--) {
+ wTemp = pTempBuffer[i];
+ pTempBuffer[i] = pTempBuffer[j];
+ pTempBuffer[j] = wTemp;
+ }
+ }
}
FX_INT32 CPDF_TextPage::GetTextObjectWritingMode(const CPDF_TextObject* pTextObj)
{