| // 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 "pageint.h" |
| |
| #include "core/include/fpdfapi/fpdf_module.h" |
| #include "core/include/fpdfapi/fpdf_page.h" |
| |
| CPDF_PageObject* CPDF_PageObject::Create(int type) { |
| switch (type) { |
| case PDFPAGE_TEXT: |
| return new CPDF_TextObject; |
| case PDFPAGE_IMAGE: |
| return new CPDF_ImageObject; |
| case PDFPAGE_PATH: |
| return new CPDF_PathObject; |
| case PDFPAGE_SHADING: |
| return new CPDF_ShadingObject; |
| case PDFPAGE_FORM: |
| return new CPDF_FormObject; |
| } |
| return NULL; |
| } |
| CPDF_PageObject::~CPDF_PageObject() {} |
| CPDF_PageObject* CPDF_PageObject::Clone() const { |
| CPDF_PageObject* pObj = Create(m_Type); |
| pObj->Copy(this); |
| return pObj; |
| } |
| void CPDF_PageObject::Copy(const CPDF_PageObject* pSrc) { |
| if (m_Type != pSrc->m_Type) { |
| return; |
| } |
| CopyData(pSrc); |
| CopyStates(*pSrc); |
| m_Left = pSrc->m_Left; |
| m_Right = pSrc->m_Right; |
| m_Top = pSrc->m_Top; |
| m_Bottom = pSrc->m_Bottom; |
| } |
| void CPDF_PageObject::AppendClipPath(CPDF_Path path, |
| int type, |
| FX_BOOL bAutoMerge) { |
| m_ClipPath.AppendPath(path, type, bAutoMerge); |
| } |
| void CPDF_PageObject::CopyClipPath(CPDF_PageObject* pObj) { |
| m_ClipPath = pObj->m_ClipPath; |
| } |
| void CPDF_PageObject::RemoveClipPath() { |
| m_ClipPath.SetNull(); |
| } |
| void CPDF_PageObject::RecalcBBox() { |
| switch (m_Type) { |
| case PDFPAGE_TEXT: |
| ((CPDF_TextObject*)this)->RecalcPositionData(); |
| break; |
| case PDFPAGE_PATH: |
| ((CPDF_PathObject*)this)->CalcBoundingBox(); |
| break; |
| case PDFPAGE_SHADING: |
| ((CPDF_ShadingObject*)this)->CalcBoundingBox(); |
| break; |
| } |
| } |
| void CPDF_PageObject::TransformClipPath(CFX_Matrix& matrix) { |
| if (m_ClipPath.IsNull()) { |
| return; |
| } |
| m_ClipPath.GetModify(); |
| m_ClipPath.Transform(matrix); |
| } |
| void CPDF_PageObject::TransformGeneralState(CFX_Matrix& matrix) { |
| if (m_GeneralState.IsNull()) { |
| return; |
| } |
| CPDF_GeneralStateData* pGS = m_GeneralState.GetModify(); |
| pGS->m_Matrix.Concat(matrix); |
| } |
| FX_RECT CPDF_PageObject::GetBBox(const CFX_Matrix* pMatrix) const { |
| CFX_FloatRect rect(m_Left, m_Bottom, m_Right, m_Top); |
| if (pMatrix) { |
| pMatrix->TransformRect(rect); |
| } |
| return rect.GetOutterRect(); |
| } |
| |
| CPDF_TextObject::CPDF_TextObject() |
| : m_PosX(0), |
| m_PosY(0), |
| m_nChars(0), |
| m_pCharCodes(nullptr), |
| m_pCharPos(nullptr) { |
| m_Type = PDFPAGE_TEXT; |
| } |
| |
| CPDF_TextObject::~CPDF_TextObject() { |
| if (m_nChars > 1) { |
| FX_Free(m_pCharCodes); |
| } |
| FX_Free(m_pCharPos); |
| } |
| |
| void CPDF_TextObject::GetItemInfo(int index, CPDF_TextObjectItem* pInfo) const { |
| pInfo->m_CharCode = |
| m_nChars == 1 ? (FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[index]; |
| pInfo->m_OriginX = index ? m_pCharPos[index - 1] : 0; |
| pInfo->m_OriginY = 0; |
| if (pInfo->m_CharCode == -1) { |
| return; |
| } |
| CPDF_Font* pFont = m_TextState.GetFont(); |
| if (pFont->GetFontType() != PDFFONT_CIDFONT) { |
| return; |
| } |
| if (!((CPDF_CIDFont*)pFont)->IsVertWriting()) { |
| return; |
| } |
| FX_WORD CID = ((CPDF_CIDFont*)pFont)->CIDFromCharCode(pInfo->m_CharCode); |
| pInfo->m_OriginY = pInfo->m_OriginX; |
| pInfo->m_OriginX = 0; |
| short vx, vy; |
| ((CPDF_CIDFont*)pFont)->GetVertOrigin(CID, vx, vy); |
| FX_FLOAT fontsize = m_TextState.GetFontSize(); |
| pInfo->m_OriginX -= fontsize * vx / 1000; |
| pInfo->m_OriginY -= fontsize * vy / 1000; |
| } |
| |
| int CPDF_TextObject::CountChars() const { |
| if (m_nChars == 1) { |
| return 1; |
| } |
| int count = 0; |
| for (int i = 0; i < m_nChars; ++i) |
| if (m_pCharCodes[i] != (FX_DWORD)-1) { |
| ++count; |
| } |
| return count; |
| } |
| |
| void CPDF_TextObject::GetCharInfo(int index, |
| FX_DWORD& charcode, |
| FX_FLOAT& kerning) const { |
| if (m_nChars == 1) { |
| charcode = (FX_DWORD)(uintptr_t)m_pCharCodes; |
| kerning = 0; |
| return; |
| } |
| int count = 0; |
| for (int i = 0; i < m_nChars; ++i) { |
| if (m_pCharCodes[i] != (FX_DWORD)-1) { |
| if (count == index) { |
| charcode = m_pCharCodes[i]; |
| if (i == m_nChars - 1 || m_pCharCodes[i + 1] != (FX_DWORD)-1) { |
| kerning = 0; |
| } else { |
| kerning = m_pCharPos[i]; |
| } |
| return; |
| } |
| ++count; |
| } |
| } |
| } |
| |
| void CPDF_TextObject::GetCharInfo(int index, CPDF_TextObjectItem* pInfo) const { |
| if (m_nChars == 1) { |
| GetItemInfo(0, pInfo); |
| return; |
| } |
| int count = 0; |
| for (int i = 0; i < m_nChars; ++i) { |
| FX_DWORD charcode = m_pCharCodes[i]; |
| if (charcode == (FX_DWORD)-1) { |
| continue; |
| } |
| if (count == index) { |
| GetItemInfo(i, pInfo); |
| break; |
| } |
| ++count; |
| } |
| } |
| |
| void CPDF_TextObject::CopyData(const CPDF_PageObject* pSrc) { |
| const CPDF_TextObject* pSrcObj = (const CPDF_TextObject*)pSrc; |
| if (m_nChars > 1) { |
| FX_Free(m_pCharCodes); |
| m_pCharCodes = nullptr; |
| } |
| FX_Free(m_pCharPos); |
| m_pCharPos = nullptr; |
| m_nChars = pSrcObj->m_nChars; |
| if (m_nChars > 1) { |
| m_pCharCodes = FX_Alloc(FX_DWORD, m_nChars); |
| m_pCharPos = FX_Alloc(FX_FLOAT, m_nChars - 1); |
| for (int i = 0; i < m_nChars; ++i) { |
| m_pCharCodes[i] = pSrcObj->m_pCharCodes[i]; |
| } |
| for (int i = 0; i < m_nChars - 1; ++i) { |
| m_pCharPos[i] = pSrcObj->m_pCharPos[i]; |
| } |
| } else { |
| m_pCharCodes = pSrcObj->m_pCharCodes; |
| } |
| m_PosX = pSrcObj->m_PosX; |
| m_PosY = pSrcObj->m_PosY; |
| } |
| |
| void CPDF_TextObject::GetTextMatrix(CFX_Matrix* pMatrix) const { |
| FX_FLOAT* pTextMatrix = m_TextState.GetMatrix(); |
| pMatrix->Set(pTextMatrix[0], pTextMatrix[2], pTextMatrix[1], pTextMatrix[3], |
| m_PosX, m_PosY); |
| } |
| |
| void CPDF_TextObject::SetSegments(const CFX_ByteString* pStrs, |
| FX_FLOAT* pKerning, |
| int nsegs) { |
| if (m_nChars > 1) { |
| FX_Free(m_pCharCodes); |
| m_pCharCodes = nullptr; |
| } |
| FX_Free(m_pCharPos); |
| m_pCharPos = nullptr; |
| CPDF_Font* pFont = m_TextState.GetFont(); |
| m_nChars = 0; |
| for (int i = 0; i < nsegs; ++i) { |
| m_nChars += pFont->CountChar(pStrs[i], pStrs[i].GetLength()); |
| } |
| m_nChars += nsegs - 1; |
| if (m_nChars > 1) { |
| m_pCharCodes = FX_Alloc(FX_DWORD, m_nChars); |
| m_pCharPos = FX_Alloc(FX_FLOAT, m_nChars - 1); |
| int index = 0; |
| for (int i = 0; i < nsegs; ++i) { |
| const FX_CHAR* segment = pStrs[i]; |
| int offset = 0, len = pStrs[i].GetLength(); |
| while (offset < len) { |
| m_pCharCodes[index++] = pFont->GetNextChar(segment, len, offset); |
| } |
| if (i != nsegs - 1) { |
| m_pCharPos[index - 1] = pKerning[i]; |
| m_pCharCodes[index++] = (FX_DWORD)-1; |
| } |
| } |
| } else { |
| int offset = 0; |
| m_pCharCodes = (FX_DWORD*)(uintptr_t)pFont->GetNextChar( |
| pStrs[0], pStrs[0].GetLength(), offset); |
| } |
| } |
| |
| void CPDF_TextObject::SetText(const CFX_ByteString& str) { |
| SetSegments(&str, nullptr, 1); |
| RecalcPositionData(); |
| } |
| |
| void CPDF_TextObject::SetEmpty() { |
| if (m_nChars > 1) { |
| FX_Free(m_pCharCodes); |
| } |
| if (m_nChars > 1) { |
| FX_Free(m_pCharPos); |
| } |
| m_nChars = 0; |
| m_pCharCodes = nullptr; |
| m_pCharPos = nullptr; |
| m_Left = m_Right = m_PosX; |
| m_Top = m_Bottom = m_PosY; |
| } |
| |
| void CPDF_TextObject::SetText(CFX_ByteString* pStrs, |
| FX_FLOAT* pKerning, |
| int nSegs) { |
| SetSegments(pStrs, pKerning, nSegs); |
| RecalcPositionData(); |
| } |
| |
| void CPDF_TextObject::SetText(int nChars, |
| FX_DWORD* pCharCodes, |
| FX_FLOAT* pKernings) { |
| if (m_nChars > 1) { |
| FX_Free(m_pCharCodes); |
| m_pCharCodes = nullptr; |
| } |
| FX_Free(m_pCharPos); |
| m_pCharPos = nullptr; |
| int nKernings = 0; |
| int i; |
| for (i = 0; i < nChars - 1; ++i) { |
| if (pKernings[i] != 0) { |
| ++nKernings; |
| } |
| } |
| m_nChars = nChars + nKernings; |
| if (m_nChars > 1) { |
| m_pCharCodes = FX_Alloc(FX_DWORD, m_nChars); |
| m_pCharPos = FX_Alloc(FX_FLOAT, m_nChars - 1); |
| for (int i = 0, index = 0; i < nChars; ++i) { |
| m_pCharCodes[index++] = pCharCodes[i]; |
| if (pKernings[i] != 0 && i != nChars - 1) { |
| m_pCharCodes[index] = (FX_DWORD)-1; |
| m_pCharPos[index - 1] = pKernings[i]; |
| ++index; |
| } |
| } |
| } else { |
| m_pCharCodes = (FX_DWORD*)(uintptr_t)pCharCodes[0]; |
| } |
| RecalcPositionData(); |
| } |
| |
| FX_FLOAT CPDF_TextObject::GetCharWidth(FX_DWORD charcode) const { |
| FX_FLOAT fontsize = m_TextState.GetFontSize() / 1000; |
| CPDF_Font* pFont = m_TextState.GetFont(); |
| FX_BOOL bVertWriting = FALSE; |
| CPDF_CIDFont* pCIDFont = pFont->GetCIDFont(); |
| if (pCIDFont) { |
| bVertWriting = pCIDFont->IsVertWriting(); |
| } |
| if (!bVertWriting) |
| return pFont->GetCharWidthF(charcode, 0) * fontsize; |
| |
| FX_WORD CID = pCIDFont->CIDFromCharCode(charcode); |
| return pCIDFont->GetVertWidth(CID) * fontsize; |
| } |
| |
| FX_FLOAT CPDF_TextObject::GetSpaceCharWidth() const { |
| CPDF_Font* pFont = m_TextState.GetFont(); |
| FX_DWORD charCode = m_TextState.GetFont()->CharCodeFromUnicode(32); |
| if (charCode != (FX_DWORD)-1) { |
| return GetCharWidth(charCode); |
| } |
| FX_FLOAT fontSize = m_TextState.GetFontSize() / 4000.0f; |
| FX_BOOL bVertWriting = FALSE; |
| CPDF_CIDFont* pCIDFont = pFont->GetCIDFont(); |
| if (pCIDFont) { |
| bVertWriting = pCIDFont->IsVertWriting(); |
| } |
| FX_RECT fontRect; |
| pFont->GetFontBBox(fontRect); |
| fontSize *= |
| bVertWriting ? (FX_FLOAT)fontRect.Height() : (FX_FLOAT)fontRect.Width(); |
| return fontSize; |
| } |
| |
| void CPDF_TextObject::GetCharRect(int index, CFX_FloatRect& rect) const { |
| CPDF_Font* pFont = m_TextState.GetFont(); |
| FX_BOOL bVertWriting = FALSE; |
| CPDF_CIDFont* pCIDFont = pFont->GetCIDFont(); |
| if (pCIDFont) { |
| bVertWriting = pCIDFont->IsVertWriting(); |
| } |
| FX_FLOAT fontsize = m_TextState.GetFontSize() / 1000; |
| int count = 0; |
| for (int i = 0; i < m_nChars; ++i) { |
| FX_DWORD charcode = |
| m_nChars == 1 ? (FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[i]; |
| if (charcode == (FX_DWORD)-1) { |
| continue; |
| } |
| if (count != index) { |
| ++count; |
| continue; |
| } |
| FX_FLOAT curpos = i > 0 ? m_pCharPos[i - 1] : 0; |
| FX_RECT char_rect; |
| pFont->GetCharBBox(charcode, char_rect, 0); |
| if (!bVertWriting) { |
| rect.left = curpos + char_rect.left * fontsize; |
| rect.right = curpos + char_rect.right * fontsize; |
| rect.top = char_rect.top * fontsize; |
| rect.bottom = char_rect.bottom * fontsize; |
| } else { |
| FX_WORD CID = pCIDFont->CIDFromCharCode(charcode); |
| short vx, vy; |
| pCIDFont->GetVertOrigin(CID, vx, vy); |
| char_rect.left -= vx; |
| char_rect.right -= vx; |
| char_rect.top -= vy; |
| char_rect.bottom -= vy; |
| rect.left = char_rect.left * fontsize; |
| rect.right = char_rect.right * fontsize; |
| rect.top = curpos + char_rect.top * fontsize; |
| rect.bottom = curpos + char_rect.bottom * fontsize; |
| } |
| return; |
| } |
| } |
| |
| void CPDF_TextObject::CalcPositionData(FX_FLOAT* pTextAdvanceX, |
| FX_FLOAT* pTextAdvanceY, |
| FX_FLOAT horz_scale, |
| int level) { |
| FX_FLOAT curpos = 0; |
| FX_FLOAT min_x = 10000 * 1.0f; |
| FX_FLOAT max_x = -10000 * 1.0f; |
| FX_FLOAT min_y = 10000 * 1.0f; |
| FX_FLOAT max_y = -10000 * 1.0f; |
| CPDF_Font* pFont = m_TextState.GetFont(); |
| FX_BOOL bVertWriting = FALSE; |
| CPDF_CIDFont* pCIDFont = pFont->GetCIDFont(); |
| if (pCIDFont) { |
| bVertWriting = pCIDFont->IsVertWriting(); |
| } |
| FX_FLOAT fontsize = m_TextState.GetFontSize(); |
| for (int i = 0; i < m_nChars; ++i) { |
| FX_DWORD charcode = |
| m_nChars == 1 ? (FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[i]; |
| if (i > 0) { |
| if (charcode == (FX_DWORD)-1) { |
| curpos -= FXSYS_Mul(m_pCharPos[i - 1], fontsize) / 1000; |
| continue; |
| } |
| m_pCharPos[i - 1] = curpos; |
| } |
| FX_RECT char_rect; |
| pFont->GetCharBBox(charcode, char_rect, level); |
| FX_FLOAT charwidth; |
| if (!bVertWriting) { |
| if (min_y > char_rect.top) { |
| min_y = (FX_FLOAT)char_rect.top; |
| } |
| if (max_y < char_rect.top) { |
| max_y = (FX_FLOAT)char_rect.top; |
| } |
| if (min_y > char_rect.bottom) { |
| min_y = (FX_FLOAT)char_rect.bottom; |
| } |
| if (max_y < char_rect.bottom) { |
| max_y = (FX_FLOAT)char_rect.bottom; |
| } |
| FX_FLOAT char_left = curpos + char_rect.left * fontsize / 1000; |
| FX_FLOAT char_right = curpos + char_rect.right * fontsize / 1000; |
| if (min_x > char_left) { |
| min_x = char_left; |
| } |
| if (max_x < char_left) { |
| max_x = char_left; |
| } |
| if (min_x > char_right) { |
| min_x = char_right; |
| } |
| if (max_x < char_right) { |
| max_x = char_right; |
| } |
| charwidth = pFont->GetCharWidthF(charcode, level) * fontsize / 1000; |
| } else { |
| FX_WORD CID = pCIDFont->CIDFromCharCode(charcode); |
| short vx; |
| short vy; |
| pCIDFont->GetVertOrigin(CID, vx, vy); |
| char_rect.left -= vx; |
| char_rect.right -= vx; |
| char_rect.top -= vy; |
| char_rect.bottom -= vy; |
| if (min_x > char_rect.left) { |
| min_x = (FX_FLOAT)char_rect.left; |
| } |
| if (max_x < char_rect.left) { |
| max_x = (FX_FLOAT)char_rect.left; |
| } |
| if (min_x > char_rect.right) { |
| min_x = (FX_FLOAT)char_rect.right; |
| } |
| if (max_x < char_rect.right) { |
| max_x = (FX_FLOAT)char_rect.right; |
| } |
| FX_FLOAT char_top = curpos + char_rect.top * fontsize / 1000; |
| FX_FLOAT char_bottom = curpos + char_rect.bottom * fontsize / 1000; |
| if (min_y > char_top) { |
| min_y = char_top; |
| } |
| if (max_y < char_top) { |
| max_y = char_top; |
| } |
| if (min_y > char_bottom) { |
| min_y = char_bottom; |
| } |
| if (max_y < char_bottom) { |
| max_y = char_bottom; |
| } |
| charwidth = pCIDFont->GetVertWidth(CID) * fontsize / 1000; |
| } |
| curpos += charwidth; |
| if (charcode == ' ' && (!pCIDFont || pCIDFont->GetCharSize(32) == 1)) { |
| curpos += m_TextState.GetObject()->m_WordSpace; |
| } |
| curpos += m_TextState.GetObject()->m_CharSpace; |
| } |
| if (bVertWriting) { |
| if (pTextAdvanceX) { |
| *pTextAdvanceX = 0; |
| } |
| if (pTextAdvanceY) { |
| *pTextAdvanceY = curpos; |
| } |
| min_x = min_x * fontsize / 1000; |
| max_x = max_x * fontsize / 1000; |
| } else { |
| if (pTextAdvanceX) { |
| *pTextAdvanceX = FXSYS_Mul(curpos, horz_scale); |
| } |
| if (pTextAdvanceY) { |
| *pTextAdvanceY = 0; |
| } |
| min_y = min_y * fontsize / 1000; |
| max_y = max_y * fontsize / 1000; |
| } |
| CFX_Matrix matrix; |
| GetTextMatrix(&matrix); |
| m_Left = min_x; |
| m_Right = max_x; |
| m_Bottom = min_y; |
| m_Top = max_y; |
| matrix.TransformRect(m_Left, m_Right, m_Top, m_Bottom); |
| int textmode = m_TextState.GetObject()->m_TextMode; |
| if (textmode == 1 || textmode == 2 || textmode == 5 || textmode == 6) { |
| FX_FLOAT half_width = m_GraphState.GetObject()->m_LineWidth / 2; |
| m_Left -= half_width; |
| m_Right += half_width; |
| m_Top += half_width; |
| m_Bottom -= half_width; |
| } |
| } |
| |
| void CPDF_TextObject::CalcCharPos(FX_FLOAT* pPosArray) const { |
| CPDF_Font* pFont = m_TextState.GetFont(); |
| FX_BOOL bVertWriting = FALSE; |
| CPDF_CIDFont* pCIDFont = pFont->GetCIDFont(); |
| if (pCIDFont) { |
| bVertWriting = pCIDFont->IsVertWriting(); |
| } |
| FX_FLOAT fontsize = m_TextState.GetFontSize(); |
| for (int i = 0, index = 0; i < m_nChars; ++i) { |
| FX_DWORD charcode = |
| m_nChars == 1 ? (FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[i]; |
| if (charcode == (FX_DWORD)-1) { |
| continue; |
| } |
| pPosArray[index++] = i ? m_pCharPos[i - 1] : 0; |
| FX_FLOAT charwidth; |
| if (bVertWriting) { |
| FX_WORD CID = pCIDFont->CIDFromCharCode(charcode); |
| charwidth = pCIDFont->GetVertWidth(CID) * fontsize / 1000; |
| } else { |
| charwidth = pFont->GetCharWidthF(charcode) * fontsize / 1000; |
| } |
| pPosArray[index] = pPosArray[index - 1] + charwidth; |
| index++; |
| } |
| } |
| |
| void CPDF_TextObject::Transform(const CFX_Matrix& matrix) { |
| m_TextState.GetModify(); |
| CFX_Matrix text_matrix; |
| GetTextMatrix(&text_matrix); |
| text_matrix.Concat(matrix); |
| FX_FLOAT* pTextMatrix = m_TextState.GetMatrix(); |
| pTextMatrix[0] = text_matrix.GetA(); |
| pTextMatrix[1] = text_matrix.GetC(); |
| pTextMatrix[2] = text_matrix.GetB(); |
| pTextMatrix[3] = text_matrix.GetD(); |
| m_PosX = text_matrix.GetE(); |
| m_PosY = text_matrix.GetF(); |
| CalcPositionData(nullptr, nullptr, 0); |
| } |
| |
| void CPDF_TextObject::SetPosition(FX_FLOAT x, FX_FLOAT y) { |
| FX_FLOAT dx = x - m_PosX; |
| FX_FLOAT dy = y - m_PosY; |
| m_PosX = x; |
| m_PosY = y; |
| m_Left += dx; |
| m_Right += dx; |
| m_Top += dy; |
| m_Bottom += dy; |
| } |
| |
| void CPDF_TextObject::SetData(int nChars, |
| FX_DWORD* pCharCodes, |
| FX_FLOAT* pCharPos, |
| FX_FLOAT x, |
| FX_FLOAT y) { |
| ASSERT(m_nChars == 0); |
| m_nChars = nChars; |
| m_PosX = x; |
| m_PosY = y; |
| if (nChars == 0) { |
| return; |
| } |
| if (nChars == 1) { |
| m_pCharCodes = (FX_DWORD*)(uintptr_t)*pCharCodes; |
| } else { |
| m_pCharCodes = FX_Alloc(FX_DWORD, nChars); |
| FXSYS_memcpy(m_pCharCodes, pCharCodes, sizeof(FX_DWORD) * nChars); |
| m_pCharPos = FX_Alloc(FX_FLOAT, nChars - 1); |
| FXSYS_memcpy(m_pCharPos, pCharPos, sizeof(FX_FLOAT) * (nChars - 1)); |
| } |
| RecalcPositionData(); |
| } |
| |
| void CPDF_TextObject::SetTextState(CPDF_TextState TextState) { |
| m_TextState = TextState; |
| CalcPositionData(nullptr, nullptr, 0); |
| } |
| |
| CPDF_ShadingObject::CPDF_ShadingObject() { |
| m_pShading = NULL; |
| m_Type = PDFPAGE_SHADING; |
| } |
| CPDF_ShadingObject::~CPDF_ShadingObject() {} |
| void CPDF_ShadingObject::CopyData(const CPDF_PageObject* pSrc) { |
| CPDF_ShadingObject* pSrcObj = (CPDF_ShadingObject*)pSrc; |
| m_pShading = pSrcObj->m_pShading; |
| if (m_pShading && m_pShading->m_pDocument) { |
| CPDF_DocPageData* pDocPageData = m_pShading->m_pDocument->GetPageData(); |
| m_pShading = (CPDF_ShadingPattern*)pDocPageData->GetPattern( |
| m_pShading->m_pShadingObj, m_pShading->m_bShadingObj, |
| &m_pShading->m_ParentMatrix); |
| } |
| m_Matrix = pSrcObj->m_Matrix; |
| } |
| void CPDF_ShadingObject::Transform(const CFX_Matrix& matrix) { |
| if (!m_ClipPath.IsNull()) { |
| m_ClipPath.GetModify(); |
| m_ClipPath.Transform(matrix); |
| } |
| m_Matrix.Concat(matrix); |
| if (!m_ClipPath.IsNull()) { |
| CalcBoundingBox(); |
| } else { |
| matrix.TransformRect(m_Left, m_Right, m_Top, m_Bottom); |
| } |
| } |
| void CPDF_ShadingObject::CalcBoundingBox() { |
| if (m_ClipPath.IsNull()) { |
| return; |
| } |
| CFX_FloatRect rect = m_ClipPath.GetClipBox(); |
| m_Left = rect.left; |
| m_Bottom = rect.bottom; |
| m_Right = rect.right; |
| m_Top = rect.top; |
| } |
| CPDF_FormObject::~CPDF_FormObject() { |
| delete m_pForm; |
| } |
| void CPDF_FormObject::Transform(const CFX_Matrix& matrix) { |
| m_FormMatrix.Concat(matrix); |
| CalcBoundingBox(); |
| } |
| void CPDF_FormObject::CopyData(const CPDF_PageObject* pSrc) { |
| const CPDF_FormObject* pSrcObj = (const CPDF_FormObject*)pSrc; |
| delete m_pForm; |
| m_pForm = pSrcObj->m_pForm->Clone(); |
| m_FormMatrix = pSrcObj->m_FormMatrix; |
| } |
| void CPDF_FormObject::CalcBoundingBox() { |
| CFX_FloatRect form_rect = m_pForm->CalcBoundingBox(); |
| form_rect.Transform(&m_FormMatrix); |
| m_Left = form_rect.left; |
| m_Bottom = form_rect.bottom; |
| m_Right = form_rect.right; |
| m_Top = form_rect.top; |
| } |
| CPDF_PageObjects::CPDF_PageObjects(FX_BOOL bReleaseMembers) |
| : m_pFormDict(nullptr), |
| m_pFormStream(nullptr), |
| m_pDocument(nullptr), |
| m_pPageResources(nullptr), |
| m_pResources(nullptr), |
| m_Transparency(0), |
| m_ObjectList(128), |
| m_bBackgroundAlphaNeeded(FALSE), |
| m_bHasImageMask(FALSE), |
| m_bReleaseMembers(bReleaseMembers), |
| m_pParser(nullptr), |
| m_ParseState(CONTENT_NOT_PARSED) {} |
| CPDF_PageObjects::~CPDF_PageObjects() { |
| delete m_pParser; |
| if (!m_bReleaseMembers) { |
| return; |
| } |
| FX_POSITION pos = m_ObjectList.GetHeadPosition(); |
| while (pos) { |
| delete (CPDF_PageObject*)m_ObjectList.GetNext(pos); |
| } |
| } |
| void CPDF_PageObjects::ContinueParse(IFX_Pause* pPause) { |
| if (!m_pParser) { |
| return; |
| } |
| m_pParser->Continue(pPause); |
| if (m_pParser->GetStatus() == CPDF_ContentParser::Done) { |
| m_ParseState = CONTENT_PARSED; |
| delete m_pParser; |
| m_pParser = NULL; |
| } |
| } |
| FX_POSITION CPDF_PageObjects::InsertObject(FX_POSITION posInsertAfter, |
| CPDF_PageObject* pNewObject) { |
| if (!posInsertAfter) { |
| return m_ObjectList.AddHead(pNewObject); |
| } |
| return m_ObjectList.InsertAfter(posInsertAfter, pNewObject); |
| } |
| int CPDF_PageObjects::GetObjectIndex(CPDF_PageObject* pObj) const { |
| int index = 0; |
| FX_POSITION pos = m_ObjectList.GetHeadPosition(); |
| while (pos) { |
| CPDF_PageObject* pThisObj = (CPDF_PageObject*)m_ObjectList.GetNext(pos); |
| if (pThisObj == pObj) { |
| return index; |
| } |
| index++; |
| } |
| return -1; |
| } |
| CPDF_PageObject* CPDF_PageObjects::GetObjectByIndex(int index) const { |
| FX_POSITION pos = m_ObjectList.FindIndex(index); |
| return pos ? static_cast<CPDF_PageObject*>(m_ObjectList.GetAt(pos)) : nullptr; |
| } |
| void CPDF_PageObjects::Transform(const CFX_Matrix& matrix) { |
| FX_POSITION pos = m_ObjectList.GetHeadPosition(); |
| while (pos) { |
| CPDF_PageObject* pObj = (CPDF_PageObject*)m_ObjectList.GetNext(pos); |
| pObj->Transform(matrix); |
| } |
| } |
| CFX_FloatRect CPDF_PageObjects::CalcBoundingBox() const { |
| if (m_ObjectList.GetCount() == 0) { |
| return CFX_FloatRect(0, 0, 0, 0); |
| } |
| FX_FLOAT left, right, top, bottom; |
| left = bottom = 1000000 * 1.0f; |
| right = top = -1000000 * 1.0f; |
| FX_POSITION pos = m_ObjectList.GetHeadPosition(); |
| while (pos) { |
| CPDF_PageObject* pObj = (CPDF_PageObject*)m_ObjectList.GetNext(pos); |
| if (left > pObj->m_Left) { |
| left = pObj->m_Left; |
| } |
| if (right < pObj->m_Right) { |
| right = pObj->m_Right; |
| } |
| if (top < pObj->m_Top) { |
| top = pObj->m_Top; |
| } |
| if (bottom > pObj->m_Bottom) { |
| bottom = pObj->m_Bottom; |
| } |
| } |
| return CFX_FloatRect(left, bottom, right, top); |
| } |
| void CPDF_PageObjects::LoadTransInfo() { |
| if (!m_pFormDict) { |
| return; |
| } |
| CPDF_Dictionary* pGroup = m_pFormDict->GetDict("Group"); |
| if (!pGroup) { |
| return; |
| } |
| if (pGroup->GetString("S") != "Transparency") { |
| return; |
| } |
| m_Transparency |= PDFTRANS_GROUP; |
| if (pGroup->GetInteger("I")) { |
| m_Transparency |= PDFTRANS_ISOLATED; |
| } |
| if (pGroup->GetInteger("K")) { |
| m_Transparency |= PDFTRANS_KNOCKOUT; |
| } |
| } |
| void CPDF_PageObjects::ClearCacheObjects() { |
| m_ParseState = CONTENT_NOT_PARSED; |
| delete m_pParser; |
| m_pParser = NULL; |
| if (m_bReleaseMembers) { |
| FX_POSITION pos = m_ObjectList.GetHeadPosition(); |
| while (pos) { |
| delete (CPDF_PageObject*)m_ObjectList.GetNext(pos); |
| } |
| } |
| m_ObjectList.RemoveAll(); |
| } |
| CPDF_Page::CPDF_Page() { |
| m_pPageRender = NULL; |
| } |
| void CPDF_Page::Load(CPDF_Document* pDocument, |
| CPDF_Dictionary* pPageDict, |
| FX_BOOL bPageCache) { |
| m_pDocument = (CPDF_Document*)pDocument; |
| m_pFormDict = pPageDict; |
| if (bPageCache) { |
| m_pPageRender = |
| CPDF_ModuleMgr::Get()->GetRenderModule()->CreatePageCache(this); |
| } |
| if (!pPageDict) { |
| m_PageWidth = m_PageHeight = 100 * 1.0f; |
| m_pPageResources = m_pResources = NULL; |
| return; |
| } |
| CPDF_Object* pageAttr = GetPageAttr("Resources"); |
| m_pResources = pageAttr ? pageAttr->GetDict() : NULL; |
| m_pPageResources = m_pResources; |
| CPDF_Object* pRotate = GetPageAttr("Rotate"); |
| int rotate = 0; |
| if (pRotate) { |
| rotate = pRotate->GetInteger() / 90 % 4; |
| } |
| if (rotate < 0) { |
| rotate += 4; |
| } |
| CPDF_Array* pMediaBox = ToArray(GetPageAttr("MediaBox")); |
| CFX_FloatRect mediabox; |
| if (pMediaBox) { |
| mediabox = pMediaBox->GetRect(); |
| mediabox.Normalize(); |
| } |
| if (mediabox.IsEmpty()) { |
| mediabox = CFX_FloatRect(0, 0, 612, 792); |
| } |
| |
| CPDF_Array* pCropBox = ToArray(GetPageAttr("CropBox")); |
| if (pCropBox) { |
| m_BBox = pCropBox->GetRect(); |
| m_BBox.Normalize(); |
| } |
| if (m_BBox.IsEmpty()) { |
| m_BBox = mediabox; |
| } else { |
| m_BBox.Intersect(mediabox); |
| } |
| if (rotate % 2) { |
| m_PageHeight = m_BBox.right - m_BBox.left; |
| m_PageWidth = m_BBox.top - m_BBox.bottom; |
| } else { |
| m_PageWidth = m_BBox.right - m_BBox.left; |
| m_PageHeight = m_BBox.top - m_BBox.bottom; |
| } |
| switch (rotate) { |
| case 0: |
| m_PageMatrix.Set(1.0f, 0, 0, 1.0f, -m_BBox.left, -m_BBox.bottom); |
| break; |
| case 1: |
| m_PageMatrix.Set(0, -1.0f, 1.0f, 0, -m_BBox.bottom, m_BBox.right); |
| break; |
| case 2: |
| m_PageMatrix.Set(-1.0f, 0, 0, -1.0f, m_BBox.right, m_BBox.top); |
| break; |
| case 3: |
| m_PageMatrix.Set(0, 1.0f, -1.0f, 0, m_BBox.top, -m_BBox.left); |
| break; |
| } |
| m_Transparency = PDFTRANS_ISOLATED; |
| LoadTransInfo(); |
| } |
| void CPDF_Page::StartParse(CPDF_ParseOptions* pOptions, FX_BOOL bReParse) { |
| if (bReParse) { |
| ClearCacheObjects(); |
| } |
| if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING) { |
| return; |
| } |
| m_pParser = new CPDF_ContentParser; |
| m_pParser->Start(this, pOptions); |
| m_ParseState = CONTENT_PARSING; |
| } |
| void CPDF_Page::ParseContent(CPDF_ParseOptions* pOptions, FX_BOOL bReParse) { |
| StartParse(pOptions, bReParse); |
| ContinueParse(NULL); |
| } |
| CPDF_Page::~CPDF_Page() { |
| if (m_pPageRender) { |
| IPDF_RenderModule* pModule = CPDF_ModuleMgr::Get()->GetRenderModule(); |
| pModule->DestroyPageCache(m_pPageRender); |
| } |
| } |
| CPDF_Object* FPDFAPI_GetPageAttr(CPDF_Dictionary* pPageDict, |
| const CFX_ByteStringC& name) { |
| int level = 0; |
| while (1) { |
| CPDF_Object* pObj = pPageDict->GetElementValue(name); |
| if (pObj) { |
| return pObj; |
| } |
| CPDF_Dictionary* pParent = pPageDict->GetDict("Parent"); |
| if (!pParent || pParent == pPageDict) { |
| return NULL; |
| } |
| pPageDict = pParent; |
| level++; |
| if (level == 1000) { |
| return NULL; |
| } |
| } |
| } |
| CPDF_Object* CPDF_Page::GetPageAttr(const CFX_ByteStringC& name) const { |
| return FPDFAPI_GetPageAttr(m_pFormDict, name); |
| } |
| CPDF_Form::CPDF_Form(CPDF_Document* pDoc, |
| CPDF_Dictionary* pPageResources, |
| CPDF_Stream* pFormStream, |
| CPDF_Dictionary* pParentResources) { |
| m_pDocument = pDoc; |
| m_pFormStream = pFormStream; |
| m_pFormDict = pFormStream ? pFormStream->GetDict() : NULL; |
| m_pResources = m_pFormDict->GetDict("Resources"); |
| m_pPageResources = pPageResources; |
| if (!m_pResources) { |
| m_pResources = pParentResources; |
| } |
| if (!m_pResources) { |
| m_pResources = pPageResources; |
| } |
| m_Transparency = 0; |
| LoadTransInfo(); |
| } |
| CPDF_Form::~CPDF_Form() {} |
| void CPDF_Form::StartParse(CPDF_AllStates* pGraphicStates, |
| CFX_Matrix* pParentMatrix, |
| CPDF_Type3Char* pType3Char, |
| CPDF_ParseOptions* pOptions, |
| int level) { |
| if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING) { |
| return; |
| } |
| m_pParser = new CPDF_ContentParser; |
| m_pParser->Start(this, pGraphicStates, pParentMatrix, pType3Char, pOptions, |
| level); |
| m_ParseState = CONTENT_PARSING; |
| } |
| void CPDF_Form::ParseContent(CPDF_AllStates* pGraphicStates, |
| CFX_Matrix* pParentMatrix, |
| CPDF_Type3Char* pType3Char, |
| CPDF_ParseOptions* pOptions, |
| int level) { |
| StartParse(pGraphicStates, pParentMatrix, pType3Char, pOptions, level); |
| ContinueParse(NULL); |
| } |
| CPDF_Form* CPDF_Form::Clone() const { |
| CPDF_Form* pClone = |
| new CPDF_Form(m_pDocument, m_pPageResources, m_pFormStream, m_pResources); |
| FX_POSITION pos = m_ObjectList.GetHeadPosition(); |
| while (pos) { |
| CPDF_PageObject* pObj = (CPDF_PageObject*)m_ObjectList.GetNext(pos); |
| pClone->m_ObjectList.AddTail(pObj->Clone()); |
| } |
| return pClone; |
| } |
| void CPDF_Page::GetDisplayMatrix(CFX_Matrix& matrix, |
| int xPos, |
| int yPos, |
| int xSize, |
| int ySize, |
| int iRotate) const { |
| if (m_PageWidth == 0 || m_PageHeight == 0) { |
| return; |
| } |
| CFX_Matrix display_matrix; |
| int x0, y0, x1, y1, x2, y2; |
| iRotate %= 4; |
| switch (iRotate) { |
| case 0: |
| x0 = xPos; |
| y0 = yPos + ySize; |
| x1 = xPos; |
| y1 = yPos; |
| x2 = xPos + xSize; |
| y2 = yPos + ySize; |
| break; |
| case 1: |
| x0 = xPos; |
| y0 = yPos; |
| x1 = xPos + xSize; |
| y1 = yPos; |
| x2 = xPos; |
| y2 = yPos + ySize; |
| break; |
| case 2: |
| x0 = xPos + xSize; |
| y0 = yPos; |
| x1 = xPos + xSize; |
| y1 = yPos + ySize; |
| x2 = xPos; |
| y2 = yPos; |
| break; |
| case 3: |
| x0 = xPos + xSize; |
| y0 = yPos + ySize; |
| x1 = xPos; |
| y1 = yPos + ySize; |
| x2 = xPos + xSize; |
| y2 = yPos; |
| break; |
| } |
| display_matrix.Set(FXSYS_Div((FX_FLOAT)(x2 - x0), m_PageWidth), |
| FXSYS_Div((FX_FLOAT)(y2 - y0), m_PageWidth), |
| FXSYS_Div((FX_FLOAT)(x1 - x0), m_PageHeight), |
| FXSYS_Div((FX_FLOAT)(y1 - y0), m_PageHeight), (FX_FLOAT)x0, |
| (FX_FLOAT)y0); |
| matrix = m_PageMatrix; |
| matrix.Concat(display_matrix); |
| } |
| CPDF_ParseOptions::CPDF_ParseOptions() { |
| m_bTextOnly = FALSE; |
| m_bMarkedContent = TRUE; |
| m_bSeparateForm = TRUE; |
| m_bDecodeInlineImage = FALSE; |
| } |
