| // 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; | |
| } |