blob: 232e5619a73393589e7e64ee540ba08ea052f9bc [file] [log] [blame]
// 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 "../../../include/fpdfapi/fpdf_page.h"
#include "../../../include/fpdfapi/fpdf_module.h"
#include "pageint.h"
void CPDF_PageObject::Release()
{
delete this;
}
CPDF_PageObject* CPDF_PageObject::Create(int type)
{
switch (type) {
case PDFPAGE_TEXT:
return FX_NEW CPDF_TextObject;
case PDFPAGE_IMAGE:
return FX_NEW CPDF_ImageObject;
case PDFPAGE_PATH:
return FX_NEW CPDF_PathObject;
case PDFPAGE_SHADING:
return FX_NEW CPDF_ShadingObject;
case PDFPAGE_FORM:
return FX_NEW CPDF_FormObject;
}
return NULL;
}
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_AffineMatrix& matrix)
{
if (m_ClipPath.IsNull()) {
return;
}
m_ClipPath.GetModify();
m_ClipPath.Transform(matrix);
}
void CPDF_PageObject::TransformGeneralState(CFX_AffineMatrix& matrix)
{
if(m_GeneralState.IsNull()) {
return;
}
CPDF_GeneralStateData* pGS = m_GeneralState.GetModify();
pGS->m_Matrix.Concat(matrix);
}
FX_RECT CPDF_PageObject::GetBBox(const CFX_AffineMatrix* 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_Type = PDFPAGE_TEXT;
m_pCharCodes = NULL;
m_pCharPos = NULL;
m_nChars = 0;
m_PosX = m_PosY = 0;
}
CPDF_TextObject::~CPDF_TextObject()
{
if (m_nChars > 1 && m_pCharCodes) {
FX_Free(m_pCharCodes);
}
if (m_pCharPos) {
FX_Free(m_pCharPos);
}
}
void CPDF_TextObject::GetItemInfo(int index, CPDF_TextObjectItem* pInfo) const
{
pInfo->m_CharCode = m_nChars == 1 ? (FX_DWORD)(FX_UINTPTR)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)(FX_UINTPTR)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 && m_pCharCodes) {
FX_Free(m_pCharCodes);
m_pCharCodes = NULL;
}
if (m_pCharPos) {
FX_Free(m_pCharPos);
m_pCharPos = NULL;
}
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);
int i;
for (i = 0; i < m_nChars; i ++) {
m_pCharCodes[i] = pSrcObj->m_pCharCodes[i];
}
for (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_AffineMatrix* 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 && m_pCharCodes) {
FX_Free(m_pCharCodes);
m_pCharCodes = NULL;
}
if (m_pCharPos) {
FX_Free(m_pCharPos);
m_pCharPos = NULL;
}
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 ++) {
FX_LPCSTR segment = pStrs[i];
int offset = 0, len = pStrs[i].GetLength();
while (offset < len) {
m_pCharCodes[index++] = pFont->GetNextChar(segment, 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*)(FX_UINTPTR)pFont->GetNextChar(pStrs[0], offset);
}
}
void CPDF_TextObject::SetText(const CFX_ByteString& str)
{
SetSegments(&str, NULL, 1);
RecalcPositionData();
}
void CPDF_TextObject::SetEmpty()
{
if (m_nChars > 1 && m_pCharCodes) {
FX_Free(m_pCharCodes);
}
if (m_nChars > 1 && m_pCharPos) {
FX_Free(m_pCharPos);
}
m_nChars = 0;
m_pCharCodes = NULL;
m_pCharPos = NULL;
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 && m_pCharCodes) {
FX_Free(m_pCharCodes);
m_pCharCodes = NULL;
}
if (m_pCharPos) {
FX_Free(m_pCharPos);
m_pCharPos = NULL;
}
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);
int index = 0;
for (int i = 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 {
int offset = 0;
m_pCharCodes = (FX_DWORD*)(FX_UINTPTR)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;
} else {
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
{
FX_FLOAT curpos = 0;
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)(FX_UINTPTR)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, max_x = -10000 * 1.0f, min_y = 10000 * 1.0f, 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)(FX_UINTPTR)m_pCharCodes : m_pCharCodes[i];
if (charcode == (FX_DWORD) - 1) {
curpos -= FXSYS_Mul(m_pCharPos[i - 1], fontsize) / 1000;
continue;
}
if (i) {
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, 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 == NULL || 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_AffineMatrix 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
{
FX_FLOAT curpos = 0;
int count = 0;
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();
int index = 0;
for (int i = 0; i < m_nChars; i ++) {
FX_DWORD charcode = m_nChars == 1 ? (FX_DWORD)(FX_UINTPTR)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_AffineMatrix& matrix)
{
m_TextState.GetModify();
CFX_AffineMatrix 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(NULL, NULL, 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*)(FX_UINTPTR) * pCharCodes;
} else {
m_pCharCodes = FX_Alloc(FX_DWORD, nChars);
FXSYS_memcpy32(m_pCharCodes, pCharCodes, sizeof(FX_DWORD)*nChars);
m_pCharPos = FX_Alloc(FX_FLOAT, nChars - 1);
FXSYS_memcpy32(m_pCharPos, pCharPos, sizeof(FX_FLOAT) * (nChars - 1));
}
RecalcPositionData();
}
void CPDF_TextObject::SetTextState(CPDF_TextState TextState)
{
m_TextState = TextState;
CalcPositionData(NULL, NULL, 0);
}
CPDF_ShadingObject::CPDF_ShadingObject()
{
m_pShading = NULL;
m_Type = PDFPAGE_SHADING;
}
CPDF_ShadingObject::~CPDF_ShadingObject()
{
CPDF_ShadingPattern* pShading = m_pShading;
if (pShading && pShading->m_pDocument) {
pShading->m_pDocument->GetPageData()->ReleasePattern(pShading->m_pShadingObj);
}
}
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_AffineMatrix& 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()
{
if (m_pForm) {
delete m_pForm;
}
}
void CPDF_FormObject::Transform(const CFX_AffineMatrix& matrix)
{
m_FormMatrix.Concat(matrix);
CalcBoundingBox();
}
void CPDF_FormObject::CopyData(const CPDF_PageObject* pSrc)
{
const CPDF_FormObject* pSrcObj = (const CPDF_FormObject*)pSrc;
if (m_pForm) {
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_ObjectList(128)
{
m_bBackgroundAlphaNeeded = FALSE;
m_bReleaseMembers = bReleaseMembers;
m_ParseState = PDF_CONTENT_NOT_PARSED;
m_pParser = NULL;
m_pFormStream = NULL;
m_pResources = NULL;
}
CPDF_PageObjects::~CPDF_PageObjects()
{
if (m_pParser) {
delete m_pParser;
}
if (!m_bReleaseMembers) {
return;
}
FX_POSITION pos = m_ObjectList.GetHeadPosition();
while (pos) {
CPDF_PageObject* pPageObj = (CPDF_PageObject*)m_ObjectList.GetNext(pos);
if (!pPageObj) {
continue;
}
pPageObj->Release();
}
}
void CPDF_PageObjects::ContinueParse(IFX_Pause* pPause)
{
if (m_pParser == NULL) {
return;
}
m_pParser->Continue(pPause);
if (m_pParser->GetStatus() == CPDF_ContentParser::Done) {
m_ParseState = PDF_CONTENT_PARSED;
delete m_pParser;
m_pParser = NULL;
}
}
int CPDF_PageObjects::EstimateParseProgress() const
{
if (m_pParser == NULL) {
return m_ParseState == PDF_CONTENT_PARSED ? 100 : 0;
}
return m_pParser->EstimateProgress();
}
FX_POSITION CPDF_PageObjects::InsertObject(FX_POSITION posInsertAfter, CPDF_PageObject* pNewObject)
{
if (posInsertAfter == NULL) {
return m_ObjectList.AddHead(pNewObject);
} else {
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);
if (pos == NULL) {
return NULL;
}
return (CPDF_PageObject*)m_ObjectList.GetAt(pos);
}
void CPDF_PageObjects::Transform(const CFX_AffineMatrix& 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 == NULL) {
return;
}
CPDF_Dictionary* pGroup = m_pFormDict->GetDict(FX_BSTRC("Group"));
if (pGroup == NULL) {
return;
}
if (pGroup->GetString(FX_BSTRC("S")) != FX_BSTRC("Transparency")) {
return;
}
m_Transparency |= PDFTRANS_GROUP;
if (pGroup->GetInteger(FX_BSTRC("I"))) {
m_Transparency |= PDFTRANS_ISOLATED;
}
if (pGroup->GetInteger(FX_BSTRC("K"))) {
m_Transparency |= PDFTRANS_KNOCKOUT;
}
}
void CPDF_PageObjects::ClearCacheObjects()
{
m_ParseState = PDF_CONTENT_NOT_PARSED;
if (m_pParser) {
delete m_pParser;
}
m_pParser = NULL;
if (m_bReleaseMembers) {
FX_POSITION pos = m_ObjectList.GetHeadPosition();
while (pos) {
CPDF_PageObject* pPageObj = (CPDF_PageObject*)m_ObjectList.GetNext(pos);
if (!pPageObj) {
continue;
}
pPageObj->Release();
}
}
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 == NULL) {
m_PageWidth = m_PageHeight = 100 * 1.0f;
m_pPageResources = m_pResources = NULL;
return;
}
m_pResources = GetPageAttr(FX_BSTRC("Resources"))->GetDict();
m_pPageResources = m_pResources;
CPDF_Object* pRotate = GetPageAttr(FX_BSTRC("Rotate"));
int rotate = 0;
if (pRotate) {
rotate = pRotate->GetInteger() / 90 % 4;
}
if (rotate < 0) {
rotate += 4;
}
CPDF_Array* pMediaBox, *pCropBox;
pMediaBox = (CPDF_Array*)GetPageAttr(FX_BSTRC("MediaBox"));
CFX_FloatRect mediabox;
if (pMediaBox) {
mediabox = pMediaBox->GetRect();
mediabox.Normalize();
}
if (mediabox.IsEmpty()) {
mediabox = CFX_FloatRect(0, 0, 612, 792);
}
pCropBox = (CPDF_Array*)GetPageAttr(FX_BSTRC("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 == PDF_CONTENT_PARSED || m_ParseState == PDF_CONTENT_PARSING) {
return;
}
m_pParser = FX_NEW CPDF_ContentParser;
m_pParser->Start(this, pOptions);
m_ParseState = PDF_CONTENT_PARSING;
}
void CPDF_Page::ParseContent(CPDF_ParseOptions* pOptions, FX_BOOL bReParse)
{
StartParse(pOptions, bReParse);
ContinueParse(NULL);
}
CPDF_Page::~CPDF_Page()
{
if (m_pPageRender) {
CPDF_RenderModuleDef* pModule = CPDF_ModuleMgr::Get()->GetRenderModule();
pModule->DestroyPageCache(m_pPageRender);
}
}
CPDF_Object* FPDFAPI_GetPageAttr(CPDF_Dictionary* pPageDict, FX_BSTR name)
{
int level = 0;
while (1) {
CPDF_Object* pObj = pPageDict->GetElementValue(name);
if (pObj) {
return pObj;
}
CPDF_Dictionary* pParent = pPageDict->GetDict(FX_BSTRC("Parent"));
if (!pParent || pParent == pPageDict) {
return NULL;
}
pPageDict = pParent;
level ++;
if (level == 1000) {
return NULL;
}
}
}
CPDF_Object* CPDF_Page::GetPageAttr(FX_BSTR 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->GetDict();
m_pResources = m_pFormDict->GetDict(FX_BSTRC("Resources"));
m_pPageResources = pPageResources;
if (m_pResources == NULL) {
m_pResources = pParentResources;
}
if (m_pResources == NULL) {
m_pResources = pPageResources;
}
m_Transparency = 0;
LoadTransInfo();
}
CPDF_Form::~CPDF_Form()
{
}
void CPDF_Form::StartParse(CPDF_AllStates* pGraphicStates, CFX_AffineMatrix* pParentMatrix,
CPDF_Type3Char* pType3Char, CPDF_ParseOptions* pOptions, int level)
{
if (m_ParseState == PDF_CONTENT_PARSED || m_ParseState == PDF_CONTENT_PARSING) {
return;
}
m_pParser = FX_NEW CPDF_ContentParser;
m_pParser->Start(this, pGraphicStates, pParentMatrix, pType3Char, pOptions, level);
m_ParseState = PDF_CONTENT_PARSING;
}
void CPDF_Form::ParseContent(CPDF_AllStates* pGraphicStates, CFX_AffineMatrix* 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 = FX_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_AffineMatrix& matrix, int xPos, int yPos,
int xSize, int ySize, int iRotate) const
{
if (m_PageWidth == 0 || m_PageHeight == 0) {
return;
}
CFX_AffineMatrix 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;
}