Initial commit.

1 files changed, 402 insertions, 0 deletions

diff --git a/core/src/reflow/reflowedtextpage.cpp b/core/src/reflow/reflowedtextpage.cpp
new file mode 100644
index 0000000000..a5ad0be948
--- /dev/null
+++ b/core/src/reflow/reflowedtextpage.cpp
@@ -0,0 +1,402 @@
+// 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 "reflowedtextpage.h"
+IPDF_TextPage*	IPDF_TextPage::CreateReflowTextPage(IPDF_ReflowedPage* pRefPage)
+{
+    return FX_NEW CRF_TextPage(pRefPage);
+}
+CRF_TextPage::CRF_TextPage(IPDF_ReflowedPage* pRefPage)
+{
+    m_pRefPage = (CPDF_ReflowedPage*)(pRefPage);
+    m_pDataList = NULL;
+    m_CountBSArray = NULL;
+}
+CRF_TextPage::~CRF_TextPage()
+{
+    if(m_pDataList) {
+        delete m_pDataList;
+        m_pDataList = NULL;
+    }
+    if(m_CountBSArray) {
+        delete m_CountBSArray;
+        m_CountBSArray = NULL;
+    }
+}
+FX_BOOL CRF_TextPage::ParseTextPage()
+{
+    if(!m_pRefPage) {
+        return FALSE;
+    }
+    int count = m_pRefPage->m_pReflowed->GetSize();
+    if(count < 500) {
+        m_pDataList = FX_NEW CRF_CharDataPtrArray(count);
+    } else {
+        m_pDataList = FX_NEW CRF_CharDataPtrArray(500);
+    }
+    if (NULL == m_pDataList) {
+        return FALSE;
+    }
+    for(int i = 0; i < count; i++) {
+        CRF_Data* pData = (*(m_pRefPage->m_pReflowed))[i];
+        if(pData->GetType() == CRF_Data::Text) {
+            m_pDataList->Add((CRF_CharData*)pData);
+        }
+    }
+    m_CountBSArray = FX_NEW CFX_CountBSINT32Array(20);
+    if(NULL == m_CountBSArray) {
+        return FALSE;
+    }
+    return TRUE;
+}
+FX_BOOL	CRF_TextPage::IsParsered() const
+{
+    if(m_pDataList) {
+        return TRUE;
+    }
+    return FALSE;
+}
+int CRF_TextPage::CharIndexFromTextIndex(int TextIndex) const
+{
+    return TextIndex;
+}
+int CRF_TextPage::TextIndexFromCharIndex(int CharIndex) const
+{
+    return CharIndex;
+}
+
+int	CRF_TextPage::CountChars() const
+{
+    if (NULL == m_pDataList) {
+        return -1;
+    }
+    return m_pDataList->GetSize();
+}
+void CRF_TextPage::GetCharInfo(int index, FPDF_CHAR_INFO & info) const
+{
+    if(index >= CountChars() || index < 0 || !m_pDataList) {
+        return;
+    }
+    CRF_CharData* pData = (*m_pDataList)[index];
+    FX_FLOAT ReltiveCorddDs = pData->m_pCharState->m_fDescent;
+    FX_FLOAT ReltiveCorddAs = pData->m_pCharState->m_fAscent;
+    info.m_Flag		= CHAR_NORMAL;
+    info.m_pTextObj	= pData->m_pCharState->m_pTextObj;
+    info.m_OriginX	= pData->m_PosX;
+    info.m_OriginY	= pData->m_PosY - ReltiveCorddDs;
+    info.m_FontSize	= pData->m_pCharState->m_fFontSize;
+    CFX_FloatRect FloatRectTmp(pData->m_PosX, pData->m_PosY, pData->m_PosX + pData->m_Width, pData->m_PosY + ReltiveCorddAs - ReltiveCorddDs);
+    info.m_CharBox	= FloatRectTmp;
+    CFX_WideString str = pData->m_pCharState->m_pFont->UnicodeFromCharCode(pData->m_CharCode);
+    if(!str.IsEmpty()) {
+        info.m_Unicode	= str.GetAt(0);
+    } else {
+        info.m_Unicode = -1;
+    }
+    info.m_Charcode = (FX_WCHAR)pData->m_CharCode;
+    info.m_Matrix = CFX_Matrix(1, 0, 0, 1, 0, 0);
+}
+extern FX_BOOL GetIntersection(FX_FLOAT low1, FX_FLOAT high1, FX_FLOAT low2, FX_FLOAT high2, FX_FLOAT& interlow, FX_FLOAT& interhigh);
+inline FX_BOOL _IsInsameline(const CFX_FloatRect& rectA, const CFX_FloatRect& rectB)
+{
+    if((rectA.top >= rectB.bottom && rectB.top >= rectA.bottom)) {
+        return TRUE;
+    } else {
+        return FALSE;
+    }
+}
+inline FX_BOOL _IsIntersect(const CFX_FloatRect& rectA, const CFX_FloatRect& rectB)
+{
+    FX_FLOAT interlow = .0f, interhigh = .0f;
+    if(GetIntersection(rectA.bottom, rectA.top, rectB.bottom, rectB.top, interlow, interhigh)) {
+        if(GetIntersection(rectA.left, rectA.right, rectB.left, rectB.right, interlow, interhigh)) {
+            return TRUE;
+        } else {
+            return FALSE;
+        }
+    }
+    return FALSE;
+}
+void CRF_TextPage::GetRectArray(int start, int nCount, CFX_RectArray& rectArray) const
+{
+    int indexlen = start + nCount;
+    FPDF_CHAR_INFO info;
+    FX_BOOL bstart = TRUE;
+    CFX_FloatRect recttmp;
+    int i;
+    for(i = start; i < indexlen; i++) {
+        GetCharInfo(i, info);
+        if(bstart) {
+            recttmp = info.m_CharBox;
+            bstart = FALSE;
+        } else if(_IsInsameline(recttmp, info.m_CharBox)) {
+            recttmp.right = info.m_CharBox.right;
+            if(info.m_CharBox.top > recttmp.top) {
+                recttmp.top = info.m_CharBox.top;
+            }
+            if(info.m_CharBox.bottom < recttmp.bottom) {
+                recttmp.bottom = info.m_CharBox.bottom;
+            }
+        } else {
+            rectArray.Add(recttmp);
+            recttmp = info.m_CharBox;
+        }
+    }
+    rectArray.Add(recttmp);
+}
+inline FX_FLOAT _GetDistance(CFX_FloatRect floatRect, CPDF_Point point)
+{
+    if(floatRect.right < point.x && floatRect.bottom > point.y) {
+        return FXSYS_sqrt(FXSYS_pow(point.x - floatRect.right, 2) + FXSYS_pow(floatRect.bottom - point.y, 2));
+    }
+    if (floatRect.right < point.x && floatRect.top < point.y) {
+        return FXSYS_sqrt(FXSYS_pow(point.x - floatRect.right, 2) + FXSYS_pow(point.y - floatRect.top, 2));
+    }
+    if(floatRect.left > point.x && floatRect.bottom > point.y) {
+        return FXSYS_sqrt(FXSYS_pow(floatRect.bottom - point.y, 2) + FXSYS_pow(floatRect.left - point.x, 2));
+    }
+    if((floatRect.right > point.x || FXSYS_fabs(floatRect.right - point.x) <= 0.0001f) &&
+            (floatRect.left < point.x || FXSYS_fabs(floatRect.left - point.x) <= 0.0001f) && floatRect.bottom > point.y) {
+        return FXSYS_fabs(floatRect.bottom - point.y);
+    }
+    if(floatRect.left > point.x && (floatRect.bottom < point.y || FXSYS_fabs(floatRect.bottom - point.y) <= 0.0001f) &&
+            (floatRect.top > point.y || FXSYS_fabs(floatRect.top - point.y) <= 0.0001f)) {
+        return FXSYS_fabs(floatRect.left - point.x);
+    }
+    if(floatRect.left > point.x && floatRect.top < point.y) {
+        return FXSYS_sqrt(FXSYS_pow(floatRect.left - point.x, 2) + FXSYS_pow(point.y - floatRect.top, 2));
+    }
+    if ((floatRect.left < point.x || FXSYS_fabs(floatRect.left - point.x) <= 0.0001f) &&
+            (floatRect.right > point.x || FXSYS_fabs(floatRect.right - point.x) <= 0.0001f) && floatRect.top < point.y) {
+        return FXSYS_fabs(point.y - floatRect.top);
+    }
+    if(floatRect.right < point.x && (floatRect.top > point.y || FXSYS_fabs(floatRect.top - point.y) <= 0.0001f) &&
+            (floatRect.bottom < point.y || FXSYS_fabs(floatRect.bottom - point.y) <= 0.0001f)) {
+        return point.x - floatRect.right;
+    }
+    return .0f;
+}
+int CRF_TextPage::GetIndexAtPos(CPDF_Point point, FX_FLOAT xTorelance, FX_FLOAT yTorelance) const
+{
+    int index = -1, i = 0, j = 0;
+    FPDF_CHAR_INFO info;
+    CFX_FloatRect rectTmp;
+    FX_FLOAT MinDistance = 1000, DistanceTmp = 0;
+    FX_FLOAT rect_bottom = point.x - xTorelance;
+    CFX_FloatRect TorelanceRect(rect_bottom <= 0 ? 0 : rect_bottom, point.y - yTorelance, point.x + xTorelance, point.y + yTorelance);
+    int count = CountChars();
+    for(i = 0; i < count; i++) {
+        GetCharInfo(i, info);
+        rectTmp = info.m_CharBox;
+        if(rectTmp.Contains(point.x, point.y)) {
+            index = i;
+            break;
+        } else if(_IsIntersect(rectTmp, TorelanceRect)) {
+            DistanceTmp = _GetDistance(rectTmp, point);
+            if(DistanceTmp < MinDistance) {
+                MinDistance = DistanceTmp;
+                index = i;
+            }
+        }
+    }
+    return index;
+}
+int CRF_TextPage::GetIndexAtPos(FX_FLOAT x, FX_FLOAT y, FX_FLOAT xTorelance, FX_FLOAT yTorelance) const
+{
+    int index = 0;
+    CPDF_Point point(x, y);
+    if((index = GetIndexAtPos(point, xTorelance, yTorelance)) < 0) {
+        return -1;
+    } else {
+        return index;
+    }
+}
+int CRF_TextPage::GetOrderByDirection(int index, int direction) const
+{
+    return -1;
+}
+CFX_WideString CRF_TextPage::GetTextByRect(CFX_FloatRect rect) const
+{
+    int count;
+    FPDF_CHAR_INFO info;
+    CFX_WideString str;
+    CFX_FloatRect  Recttmp;
+    FX_BOOL bstart = TRUE;
+    count = CountChars();
+    if(rect.IsEmpty()) {
+        return L"";
+    }
+    for(int i = 0; i < count; i++) {
+        GetCharInfo(i, info);
+        if(_IsIntersect(rect, info.m_CharBox)) {
+            if(bstart) {
+                Recttmp = info.m_CharBox;
+                str += info.m_Unicode;
+                bstart = FALSE;
+            } else if(_IsInsameline(Recttmp, info.m_CharBox)) {
+                str += info.m_Unicode;
+            } else {
+                str += L"\r\n";
+                Recttmp = info.m_CharBox;
+                str += info.m_Unicode;
+            }
+        }
+    }
+    if(str.IsEmpty()) {
+        return L"";
+    } else {
+        return str;
+    }
+}
+void CRF_TextPage::GetRectsArrayByRect(CFX_FloatRect rect, CFX_RectArray& resRectArray) const
+{
+    int count, i;
+    FX_BOOL bstart = TRUE;
+    FPDF_CHAR_INFO info;
+    CFX_FloatRect recttmp;
+    count = CountChars();
+    for(i = 0; i < count; i++) {
+        GetCharInfo(i, info);
+        if(_IsIntersect(rect, info.m_CharBox)) {
+            if(bstart) {
+                recttmp = info.m_CharBox;
+                bstart = FALSE;
+            } else if(_IsInsameline(recttmp, info.m_CharBox)) {
+                recttmp.right = info.m_CharBox.right;
+                if(info.m_CharBox.top > recttmp.top) {
+                    recttmp.top = info.m_CharBox.top;
+                }
+                if(info.m_CharBox.bottom < recttmp.bottom) {
+                    recttmp.bottom = info.m_CharBox.bottom;
+                }
+            } else {
+                resRectArray.Add(recttmp);
+                recttmp = info.m_CharBox;
+            }
+        }
+    }
+    resRectArray.Add(recttmp);
+}
+int CRF_TextPage::CountRects(int start, int nCount)
+{
+    m_rectArray.RemoveAll();
+    GetRectArray(start, nCount, m_rectArray);
+    return m_rectArray.GetSize();
+}
+void CRF_TextPage::GetRect(int rectIndex, FX_FLOAT& left, FX_FLOAT& top, FX_FLOAT& right, FX_FLOAT &bottom) const
+{
+    if(m_rectArray.GetSize() <= rectIndex) {
+        return;
+    }
+    left   = m_rectArray[rectIndex].left;
+    top    = m_rectArray[rectIndex].top;
+    right  = m_rectArray[rectIndex].right;
+    bottom = m_rectArray[rectIndex].bottom;
+}
+FX_BOOL CRF_TextPage::GetBaselineRotate(int rectIndex, int& Rotate)
+{
+    Rotate = 0;
+    return TRUE;
+}
+FX_BOOL CRF_TextPage::GetBaselineRotate(CFX_FloatRect rect, int& Rotate)
+{
+    Rotate = 0;
+    return TRUE;
+}
+int CRF_TextPage::CountBoundedSegments(FX_FLOAT left, FX_FLOAT top, FX_FLOAT right, FX_FLOAT bottom, FX_BOOL bContains)
+{
+    if (!m_CountBSArray) {
+        return -1;
+    }
+    m_CountBSArray->RemoveAll();
+    CFX_FloatRect floatrect(left, bottom, right, top);
+    int totalcount, i, j = 0, counttmp = 0;
+    FX_BOOL bstart = TRUE;
+    FPDF_CHAR_INFO info;
+    CFX_FloatRect recttmp;
+    totalcount = CountChars();
+    for(i = 0; i < totalcount; i++) {
+        GetCharInfo(i, info);
+        if(_IsIntersect(floatrect, info.m_CharBox)) {
+            if(bstart) {
+                m_CountBSArray->Add(i);
+                counttmp = 1;
+                recttmp = info.m_CharBox;
+                bstart = FALSE;
+            } else if(_IsInsameline(recttmp, info.m_CharBox)) {
+                recttmp.right = info.m_CharBox.right;
+                if(info.m_CharBox.top > recttmp.top) {
+                    recttmp.top = info.m_CharBox.top;
+                }
+                if(info.m_CharBox.bottom < recttmp.bottom) {
+                    recttmp.bottom = info.m_CharBox.bottom;
+                }
+                counttmp ++;
+            } else {
+                m_CountBSArray->Add(counttmp);
+                m_CountBSArray->Add(i);
+                counttmp = 1;
+                j++;
+                recttmp = info.m_CharBox;
+            }
+        }
+    }
+    m_CountBSArray->Add(counttmp);
+    j++;
+    return j;
+}
+void CRF_TextPage::GetBoundedSegment(int index, int& start, int& count) const
+{
+    if (!m_CountBSArray) {
+        return;
+    }
+    if(m_CountBSArray->GetSize() <= index * 2) {
+        start = 0;
+        count = 0;
+        return;
+    }
+    start = *(int *)m_CountBSArray->GetAt(index * 2);
+    count = *(int *)m_CountBSArray->GetAt(index * 2 + 1);
+}
+
+int CRF_TextPage::GetWordBreak(int index, int direction) const
+{
+    return -1;
+}
+CFX_WideString CRF_TextPage::GetPageText(int start, int nCount ) const
+{
+    if(nCount == -1) {
+        nCount = CountChars();
+        start = 0;
+    } else if(nCount < 1) {
+        return L"";
+    } else if(start >= CountChars()) {
+        return L"";
+    }
+    int i, index = start + nCount;
+    FPDF_CHAR_INFO info;
+    CFX_WideString str;
+    CFX_FloatRect recttmp;
+    FX_BOOL bstart = TRUE;
+    for(i = start; i < index; i++) {
+        GetCharInfo(i, info);
+        if(bstart) {
+            recttmp = info.m_CharBox;
+            str += info.m_Unicode;
+            bstart = FALSE;
+        } else if (_IsInsameline(recttmp, info.m_CharBox)) {
+            str += info.m_Unicode;
+        } else {
+            str += L"\r\n";
+            recttmp = info.m_CharBox;
+            str += info.m_Unicode;
+        }
+    }
+    if(str.IsEmpty()) {
+        return L"";
+    }
+    return str;
+}