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-rw-r--r--core/src/fpdftext/fpdf_text_int.cpp130
1 files changed, 70 insertions, 60 deletions
diff --git a/core/src/fpdftext/fpdf_text_int.cpp b/core/src/fpdftext/fpdf_text_int.cpp
index a7c0ddfbd1..3d4bc36ed5 100644
--- a/core/src/fpdftext/fpdf_text_int.cpp
+++ b/core/src/fpdftext/fpdf_text_int.cpp
@@ -10,7 +10,11 @@
#include "../../include/fpdfapi/fpdf_page.h"
#include "../../include/fpdfapi/fpdf_module.h"
#include <ctype.h>
+#include <algorithm>
#include "text_int.h"
+
+namespace {
+
FX_BOOL _IsIgnoreSpaceCharacter(FX_WCHAR curChar)
{
if(curChar < 255 ) {
@@ -29,6 +33,48 @@ FX_BOOL _IsIgnoreSpaceCharacter(FX_WCHAR curChar)
}
return TRUE;
}
+
+FX_FLOAT _NormalizeThreshold(FX_FLOAT threshold)
+{
+ if (threshold < 300) {
+ return threshold / 2.0;
+ } else if (threshold < 500) {
+ return threshold / 4.0;
+ } else if (threshold < 700) {
+ return threshold / 5.0;
+ }
+ return threshold / 6.0;
+}
+
+FX_FLOAT _CalculateBaseSpace(const CPDF_TextObject* pTextObj,
+ const CFX_AffineMatrix& matrix)
+{
+ FX_FLOAT baseSpace = 0.0;
+ const int nItems = pTextObj->CountItems();
+ if (pTextObj->m_TextState.GetObject()->m_CharSpace && nItems >= 3) {
+ FX_BOOL bAllChar = TRUE;
+ FX_FLOAT spacing = matrix.TransformDistance(
+ pTextObj->m_TextState.GetObject()->m_CharSpace);
+ baseSpace = spacing;
+ for (int i = 0; i < nItems; i++) {
+ CPDF_TextObjectItem item;
+ pTextObj->GetItemInfo(i, &item);
+ if (item.m_CharCode == (FX_DWORD) - 1) {
+ FX_FLOAT fontsize_h = pTextObj->m_TextState.GetFontSizeH();
+ FX_FLOAT kerning = -fontsize_h * item.m_OriginX / 1000;
+ baseSpace = std::min(baseSpace, kerning + spacing);
+ bAllChar = FALSE;
+ }
+ }
+ if (baseSpace < 0.0 || (nItems == 3 && !bAllChar)) {
+ baseSpace = 0.0;
+ }
+ }
+ return baseSpace;
+}
+
+} // namespace
+
CPDFText_ParseOptions::CPDFText_ParseOptions()
: m_bGetCharCodeOnly(FALSE), m_bNormalizeObjs(TRUE), m_bOutputHyphen(FALSE)
{
@@ -1642,29 +1688,7 @@ void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj)
m_pPreTextObj = pTextObj;
m_perMatrix.Copy(formMatrix);
int nItems = pTextObj->CountItems();
- FX_FLOAT spacing = 0;
- FX_FLOAT baseSpace = 0.0;
- FX_BOOL bAllChar = TRUE;
- if (pTextObj->m_TextState.GetObject()->m_CharSpace && nItems >= 3) {
- spacing = matrix.TransformDistance(pTextObj->m_TextState.GetObject()->m_CharSpace);
- baseSpace = spacing;
- for (int i = 0; i < nItems; i++) {
- CPDF_TextObjectItem item;
- pTextObj->GetItemInfo(i, &item);
- if (item.m_CharCode == (FX_DWORD) - 1) {
- FX_FLOAT fontsize_h = pTextObj->m_TextState.GetFontSizeH();
- FX_FLOAT kerning = -fontsize_h * item.m_OriginX / 1000;
- if(kerning + spacing < baseSpace) {
- baseSpace = kerning + spacing;
- }
- bAllChar = FALSE;
- }
- }
- spacing = 0;
- if(baseSpace < 0.0 || (nItems == 3 && !bAllChar)) {
- baseSpace = 0.0;
- }
- }
+ FX_FLOAT baseSpace = _CalculateBaseSpace(pTextObj, matrix);
FX_BOOL bIsBidiAndMirrosInverse = FALSE;
IFX_BidiChar* BidiChar = IFX_BidiChar::Create();
@@ -1712,6 +1736,7 @@ void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj)
FX_INT32 iBufStartAppend = m_TempTextBuf.GetLength();
FX_INT32 iCharListStartAppend = m_TempCharList.GetSize();
+ FX_FLOAT spacing = 0;
for (int i = 0; i < nItems; i++) {
CPDF_TextObjectItem item;
PAGECHAR_INFO charinfo;
@@ -1754,15 +1779,7 @@ void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj)
threshold = fontsize_h;
int this_width = FXSYS_abs(GetCharWidth(item.m_CharCode, pFont));
threshold = this_width > last_width ? (FX_FLOAT)this_width : (FX_FLOAT)last_width;
- int nDivide = 6;
- if (threshold < 300) {
- nDivide = 2;
- } else if (threshold < 500) {
- nDivide = 4;
- } else if (threshold < 700) {
- nDivide = 5;
- }
- threshold = threshold / nDivide;
+ threshold = _NormalizeThreshold(threshold);
threshold = fontsize_h * threshold / 1000;
}
if (threshold && (spacing && spacing >= threshold) ) {
@@ -1825,11 +1842,12 @@ void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj)
continue;
} else {
int nTotal = wstrItem.GetLength();
- int n = 0;
FX_BOOL bDel = FALSE;
- while (n < m_TempCharList.GetSize() && n < 7) {
- n++;
- PAGECHAR_INFO* charinfo1 = (PAGECHAR_INFO*)m_TempCharList.GetAt(m_TempCharList.GetSize() - n);
+ const int count = std::min(m_TempCharList.GetSize(), 7);
+ for (int n = m_TempCharList.GetSize();
+ n > m_TempCharList.GetSize() - count;
+ n--) {
+ PAGECHAR_INFO* charinfo1 = (PAGECHAR_INFO*)m_TempCharList.GetAt(n - 1);
if(charinfo1->m_CharCode == charinfo.m_CharCode &&
charinfo1->m_pTextObj->GetFont() == charinfo.m_pTextObj->GetFont() &&
FXSYS_fabs(charinfo1->m_OriginX - charinfo.m_OriginX) < TEXT_CHARRATIO_GAPDELTA * pTextObj->GetFontSize() &&
@@ -1858,30 +1876,22 @@ 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;
- }
- }
+ if (bIsBidiAndMirrosInverse) {
+ FX_INT32 i, j;
+ i = iCharListStartAppend;
+ j = m_TempCharList.GetSize() - 1;
+ for (; i < j; i++, j--) {
+ std::swap(m_TempCharList[i], m_TempCharList[j]);
+ std::swap(m_TempCharList[i].m_Index, m_TempCharList[j].m_Index);
+ }
+ FX_WCHAR * pTempBuffer = m_TempTextBuf.GetBuffer();
+ i = iBufStartAppend;
+ j = m_TempTextBuf.GetLength() - 1;
+ FX_WCHAR wTemp;
+ for (; i < j; i++, j--) {
+ std::swap(pTempBuffer[i], pTempBuffer[j]);
+ }
+ }
}
FX_INT32 CPDF_TextPage::GetTextObjectWritingMode(const CPDF_TextObject* pTextObj)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 03:52:09 +0000