/
pdfcreatefromcomposition.cpp
2496 lines (2239 loc) · 90.4 KB
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pdfcreatefromcomposition.cpp
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/******************************************************************************
* $Id$
*
* Project: PDF driver
* Purpose: GDALDataset driver for PDF dataset.
* Author: Even Rouault, <even dot rouault at spatialys dot com>
*
******************************************************************************
* Copyright (c) 2019, Even Rouault <even dot rouault at spatialys dot com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "gdal_pdf.h"
#include "pdfcreatecopy.h"
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include "pdfcreatefromcomposition.h"
#include "cpl_conv.h"
#include "cpl_minixml.h"
#include "cpl_vsi_virtual.h"
#include "ogr_geometry.h"
/************************************************************************/
/* GDALPDFComposerWriter() */
/************************************************************************/
GDALPDFComposerWriter::GDALPDFComposerWriter(VSILFILE* fp):
GDALPDFBaseWriter(fp)
{
StartNewDoc();
}
/************************************************************************/
/* ~GDALPDFComposerWriter() */
/************************************************************************/
GDALPDFComposerWriter::~GDALPDFComposerWriter()
{
Close();
}
/************************************************************************/
/* Close() */
/************************************************************************/
void GDALPDFComposerWriter::Close()
{
if (m_fp)
{
CPLAssert(!m_bInWriteObj);
if (m_nPageResourceId.toBool())
{
WritePages();
WriteXRefTableAndTrailer(false, 0);
}
}
GDALPDFBaseWriter::Close();
}
/************************************************************************/
/* CreateOCGOrder() */
/************************************************************************/
GDALPDFArrayRW* GDALPDFComposerWriter::CreateOCGOrder(const TreeOfOCG* parent)
{
auto poArrayOrder = new GDALPDFArrayRW();
for( const auto& child: parent->m_children )
{
poArrayOrder->Add(child->m_nNum, 0);
if( !child->m_children.empty() )
{
poArrayOrder->Add(CreateOCGOrder(child.get()));
}
}
return poArrayOrder;
}
/************************************************************************/
/* CollectOffOCG() */
/************************************************************************/
void GDALPDFComposerWriter::CollectOffOCG(std::vector<GDALPDFObjectNum>& ar,
const TreeOfOCG* parent)
{
if( !parent->m_bInitiallyVisible )
ar.push_back(parent->m_nNum);
for( const auto& child: parent->m_children )
{
CollectOffOCG(ar, child.get());
}
}
/************************************************************************/
/* WritePages() */
/************************************************************************/
void GDALPDFComposerWriter::WritePages()
{
StartObj(m_nPageResourceId);
{
GDALPDFDictionaryRW oDict;
GDALPDFArrayRW* poKids = new GDALPDFArrayRW();
oDict.Add("Type", GDALPDFObjectRW::CreateName("Pages"))
.Add("Count", (int)m_asPageId.size())
.Add("Kids", poKids);
for(size_t i=0;i<m_asPageId.size();i++)
poKids->Add(m_asPageId[i], 0);
VSIFPrintfL(m_fp, "%s\n", oDict.Serialize().c_str());
}
EndObj();
if (m_nStructTreeRootId.toBool())
{
auto nParentTreeId = AllocNewObject();
StartObj(nParentTreeId);
VSIFPrintfL(m_fp, "<< /Nums [ ");
for( size_t i = 0; i < m_anParentElements.size(); i++ )
{
VSIFPrintfL(m_fp, "%d %d 0 R ",
static_cast<int>(i),
m_anParentElements[i].toInt());
}
VSIFPrintfL(m_fp, " ] >> \n");
EndObj();
StartObj(m_nStructTreeRootId);
VSIFPrintfL(m_fp,
"<< "
"/Type /StructTreeRoot "
"/ParentTree %d 0 R "
"/K [ ", nParentTreeId.toInt());
for( const auto& num: m_anFeatureLayerId )
{
VSIFPrintfL(m_fp, "%d 0 R ", num.toInt());
}
VSIFPrintfL(m_fp,"] >>\n");
EndObj();
}
StartObj(m_nCatalogId);
{
GDALPDFDictionaryRW oDict;
oDict.Add("Type", GDALPDFObjectRW::CreateName("Catalog"))
.Add("Pages", m_nPageResourceId, 0);
if (m_nOutlinesId.toBool())
oDict.Add("Outlines", m_nOutlinesId, 0);
if (m_nXMPId.toBool())
oDict.Add("Metadata", m_nXMPId, 0);
if (!m_asOCGs.empty() )
{
GDALPDFDictionaryRW* poDictOCProperties = new GDALPDFDictionaryRW();
oDict.Add("OCProperties", poDictOCProperties);
GDALPDFDictionaryRW* poDictD = new GDALPDFDictionaryRW();
poDictOCProperties->Add("D", poDictD);
if( m_bDisplayLayersOnlyOnVisiblePages )
{
poDictD->Add("ListMode",
GDALPDFObjectRW::CreateName("VisiblePages"));
}
/* Build "Order" array of D dict */
GDALPDFArrayRW* poArrayOrder = CreateOCGOrder(&m_oTreeOfOGC);
poDictD->Add("Order", poArrayOrder);
/* Build "OFF" array of D dict */
std::vector<GDALPDFObjectNum> offOCGs;
CollectOffOCG(offOCGs, &m_oTreeOfOGC);
if( !offOCGs.empty() )
{
GDALPDFArrayRW* poArrayOFF = new GDALPDFArrayRW();
for( const auto& num: offOCGs )
{
poArrayOFF->Add(num, 0);
}
poDictD->Add("OFF", poArrayOFF);
}
/* Build "RBGroups" array of D dict */
if( !m_oMapExclusiveOCGIdToOCGs.empty() )
{
GDALPDFArrayRW* poArrayRBGroups = new GDALPDFArrayRW();
for( const auto& group: m_oMapExclusiveOCGIdToOCGs )
{
GDALPDFArrayRW* poGroup = new GDALPDFArrayRW();
for( const auto& num: group.second )
{
poGroup->Add(num, 0);
}
poArrayRBGroups->Add(poGroup);
}
poDictD->Add("RBGroups", poArrayRBGroups);
}
GDALPDFArrayRW* poArrayOGCs = new GDALPDFArrayRW();
for(const auto& ocg: m_asOCGs )
poArrayOGCs->Add(ocg.nId, 0);
poDictOCProperties->Add("OCGs", poArrayOGCs);
}
if (m_nStructTreeRootId.toBool())
{
GDALPDFDictionaryRW* poDictMarkInfo = new GDALPDFDictionaryRW();
oDict.Add("MarkInfo", poDictMarkInfo);
poDictMarkInfo->Add("UserProperties", GDALPDFObjectRW::CreateBool(TRUE));
oDict.Add("StructTreeRoot", m_nStructTreeRootId, 0);
}
if (m_nNamesId.toBool())
oDict.Add("Names", m_nNamesId, 0);
VSIFPrintfL(m_fp, "%s\n", oDict.Serialize().c_str());
}
EndObj();
}
/************************************************************************/
/* CreateLayerTree() */
/************************************************************************/
bool GDALPDFComposerWriter::CreateLayerTree(const CPLXMLNode* psNode,
const GDALPDFObjectNum& nParentId,
TreeOfOCG* parent)
{
for(const auto* psIter = psNode->psChild; psIter; psIter = psIter->psNext)
{
if( psIter->eType == CXT_Element &&
strcmp(psIter->pszValue, "Layer") == 0 )
{
const char* pszId = CPLGetXMLValue(psIter, "id", nullptr);
if( !pszId )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing id attribute in Layer");
return false;
}
const char* pszName = CPLGetXMLValue(psIter, "name", nullptr);
if( !pszName )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing name attribute in Layer");
return false;
}
if( m_oMapLayerIdToOCG.find(pszId) != m_oMapLayerIdToOCG.end() )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Layer.id = %s is not unique", pszId);
return false;
}
const bool bInitiallyVisible = CPLTestBool(
CPLGetXMLValue(psIter, "initiallyVisible", "true"));
const char* pszMutuallyExclusiveGroupId = CPLGetXMLValue(psIter,
"mutuallyExclusiveGroupId", nullptr);
auto nThisObjId = WriteOCG( pszName, nParentId );
m_oMapLayerIdToOCG[pszId] = nThisObjId;
auto newTreeOfOCG = cpl::make_unique<TreeOfOCG>();
newTreeOfOCG->m_nNum = nThisObjId;
newTreeOfOCG->m_bInitiallyVisible = bInitiallyVisible;
parent->m_children.emplace_back(std::move(newTreeOfOCG));
if( pszMutuallyExclusiveGroupId )
{
m_oMapExclusiveOCGIdToOCGs[pszMutuallyExclusiveGroupId].
push_back(nThisObjId);
}
if( !CreateLayerTree(psIter, nThisObjId,
parent->m_children.back().get()) )
{
return false;
}
}
}
return true;
}
/************************************************************************/
/* ParseActions() */
/************************************************************************/
bool GDALPDFComposerWriter::ParseActions(const CPLXMLNode* psNode,
std::vector<std::unique_ptr<Action>>& actions)
{
std::set<GDALPDFObjectNum> anONLayers{};
std::set<GDALPDFObjectNum> anOFFLayers{};
for(const auto* psIter = psNode->psChild; psIter; psIter = psIter->psNext)
{
if( psIter->eType == CXT_Element &&
strcmp(psIter->pszValue, "GotoPageAction") == 0 )
{
auto poAction = cpl::make_unique<GotoPageAction>();
const char* pszPageId = CPLGetXMLValue(psIter, "pageId", nullptr);
if( !pszPageId )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing pageId attribute in GotoPageAction");
return false;
}
auto oIter = m_oMapPageIdToObjectNum.find(pszPageId);
if( oIter == m_oMapPageIdToObjectNum.end() )
{
CPLError(CE_Failure, CPLE_AppDefined,
"GotoPageAction.pageId = %s not pointing to a Page.id",
pszPageId);
return false;
}
poAction->m_nPageDestId = oIter->second;
poAction->m_dfX1 = CPLAtof(CPLGetXMLValue(psIter, "x1", "0"));
poAction->m_dfX2 = CPLAtof(CPLGetXMLValue(psIter, "y1", "0"));
poAction->m_dfY1 = CPLAtof(CPLGetXMLValue(psIter, "x2", "0"));
poAction->m_dfY2 = CPLAtof(CPLGetXMLValue(psIter, "y2", "0"));
actions.push_back(std::move(poAction));
}
else if( psIter->eType == CXT_Element &&
strcmp(psIter->pszValue, "SetAllLayersStateAction") == 0 )
{
if( CPLTestBool(CPLGetXMLValue(psIter, "visible", "true")) )
{
for( const auto& ocg: m_asOCGs )
{
anOFFLayers.erase(ocg.nId);
anONLayers.insert(ocg.nId);
}
}
else
{
for( const auto& ocg: m_asOCGs )
{
anONLayers.erase(ocg.nId);
anOFFLayers.insert(ocg.nId);
}
}
}
else if( psIter->eType == CXT_Element &&
strcmp(psIter->pszValue, "SetLayerStateAction") == 0 )
{
const char* pszLayerId = CPLGetXMLValue(psIter, "layerId", nullptr);
if( !pszLayerId )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing layerId");
return false;
}
auto oIter = m_oMapLayerIdToOCG.find(pszLayerId);
if( oIter == m_oMapLayerIdToOCG.end() )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Referencing layer of unknown id: %s", pszLayerId);
return false;
}
const auto& ocg = oIter->second;
if( CPLTestBool(CPLGetXMLValue(psIter, "visible", "true")) )
{
anOFFLayers.erase(ocg);
anONLayers.insert(ocg);
}
else
{
anONLayers.erase(ocg);
anOFFLayers.insert(ocg);
}
}
else if( psIter->eType == CXT_Element &&
strcmp(psIter->pszValue, "JavascriptAction") == 0 )
{
auto poAction = cpl::make_unique<JavascriptAction>();
poAction->m_osScript = CPLGetXMLValue(psIter, nullptr, "");
actions.push_back(std::move(poAction));
}
}
if( !anONLayers.empty() || !anOFFLayers.empty() )
{
auto poAction = cpl::make_unique<SetLayerStateAction>();
poAction->m_anONLayers = std::move(anONLayers);
poAction->m_anOFFLayers = std::move(anOFFLayers);
actions.push_back(std::move(poAction));
}
return true;
}
/************************************************************************/
/* CreateOutlineFirstPass() */
/************************************************************************/
bool GDALPDFComposerWriter::CreateOutlineFirstPass(const CPLXMLNode* psNode,
OutlineItem* poParentItem)
{
for(const auto* psIter = psNode->psChild; psIter; psIter = psIter->psNext)
{
if( psIter->eType == CXT_Element &&
strcmp(psIter->pszValue, "OutlineItem") == 0 )
{
auto newItem = cpl::make_unique<OutlineItem>();
const char* pszName = CPLGetXMLValue(psIter, "name", nullptr);
if( !pszName )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing name attribute in OutlineItem");
return false;
}
newItem->m_osName = pszName;
newItem->m_bOpen =
CPLTestBool(CPLGetXMLValue(psIter, "open", "true"));
if( CPLTestBool(CPLGetXMLValue(psIter, "italic", "false")) )
newItem->m_nFlags |= 1 << 0;
if( CPLTestBool(CPLGetXMLValue(psIter, "bold", "false")) )
newItem->m_nFlags |= 1 << 1;
const auto poActions = CPLGetXMLNode(psIter, "Actions");
if( poActions )
{
if( !ParseActions(poActions, newItem->m_aoActions) )
return false;
}
newItem->m_nObjId = AllocNewObject();
if( !CreateOutlineFirstPass(psIter, newItem.get()) )
{
return false;
}
poParentItem->m_nKidsRecCount += 1 + newItem->m_nKidsRecCount;
poParentItem->m_aoKids.push_back(std::move(newItem));
}
}
return true;
}
/************************************************************************/
/* SerializeActions() */
/************************************************************************/
GDALPDFDictionaryRW* GDALPDFComposerWriter::SerializeActions(
GDALPDFDictionaryRW* poDictForDest,
const std::vector<std::unique_ptr<Action>>& actions)
{
GDALPDFDictionaryRW* poRetAction = nullptr;
GDALPDFDictionaryRW* poLastActionDict = nullptr;
for( const auto& poAction: actions )
{
GDALPDFDictionaryRW* poActionDict = nullptr;
auto poGotoPageAction = dynamic_cast<GotoPageAction*>(poAction.get());
if( poGotoPageAction )
{
GDALPDFArrayRW* poDest = new GDALPDFArrayRW;
poDest->Add(poGotoPageAction->m_nPageDestId, 0);
if( poGotoPageAction->m_dfX1 == 0.0 &&
poGotoPageAction->m_dfX2 == 0.0 &&
poGotoPageAction->m_dfY1 == 0.0 &&
poGotoPageAction->m_dfY2 == 0.0 )
{
poDest->Add(GDALPDFObjectRW::CreateName("XYZ"))
.Add(GDALPDFObjectRW::CreateNull())
.Add(GDALPDFObjectRW::CreateNull())
.Add(GDALPDFObjectRW::CreateNull());
}
else
{
poDest->Add(GDALPDFObjectRW::CreateName("FitR"))
.Add(poGotoPageAction->m_dfX1)
.Add(poGotoPageAction->m_dfY1)
.Add(poGotoPageAction->m_dfX2)
.Add(poGotoPageAction->m_dfY2);
}
if( poDictForDest && actions.size() == 1 )
{
poDictForDest->Add("Dest", poDest);
}
else
{
poActionDict = new GDALPDFDictionaryRW();
poActionDict->Add("Type", GDALPDFObjectRW::CreateName("Action"));
poActionDict->Add("S", GDALPDFObjectRW::CreateName("GoTo"));
poActionDict->Add("D", poDest);
}
}
auto setLayerStateAction = dynamic_cast<SetLayerStateAction*>(poAction.get());
if( poActionDict == nullptr && setLayerStateAction )
{
poActionDict = new GDALPDFDictionaryRW();
poActionDict->Add("Type", GDALPDFObjectRW::CreateName("Action"));
poActionDict->Add("S", GDALPDFObjectRW::CreateName("SetOCGState"));
auto poStateArray = new GDALPDFArrayRW();
if( !setLayerStateAction->m_anOFFLayers.empty() )
{
poStateArray->Add(GDALPDFObjectRW::CreateName("OFF"));
for( const auto& ocg: setLayerStateAction->m_anOFFLayers )
poStateArray->Add(ocg, 0);
}
if( !setLayerStateAction->m_anONLayers.empty() )
{
poStateArray->Add(GDALPDFObjectRW::CreateName("ON"));
for( const auto& ocg: setLayerStateAction->m_anONLayers )
poStateArray->Add(ocg, 0);
}
poActionDict->Add("State", poStateArray);
}
auto javascriptAction = dynamic_cast<JavascriptAction*>(poAction.get());
if( poActionDict == nullptr && javascriptAction )
{
poActionDict = new GDALPDFDictionaryRW();
poActionDict->Add("Type", GDALPDFObjectRW::CreateName("Action"));
poActionDict->Add("S", GDALPDFObjectRW::CreateName("JavaScript"));
poActionDict->Add("JS", javascriptAction->m_osScript);
}
if( poActionDict )
{
if( poLastActionDict == nullptr )
{
poRetAction = poActionDict;
}
else
{
poLastActionDict->Add("Next", poActionDict);
}
poLastActionDict = poActionDict;
}
}
return poRetAction;
}
/************************************************************************/
/* SerializeOutlineKids() */
/************************************************************************/
bool GDALPDFComposerWriter::SerializeOutlineKids(const OutlineItem* poParentItem)
{
for( size_t i = 0; i < poParentItem->m_aoKids.size(); i++ )
{
const auto& poItem = poParentItem->m_aoKids[i];
StartObj(poItem->m_nObjId);
GDALPDFDictionaryRW oDict;
oDict.Add("Title", poItem->m_osName);
auto poActionDict = SerializeActions(&oDict, poItem->m_aoActions);
if( poActionDict )
{
oDict.Add("A", poActionDict);
}
if( i > 0 )
{
oDict.Add("Prev", poParentItem->m_aoKids[i-1]->m_nObjId, 0);
}
if( i + 1 < poParentItem->m_aoKids.size() )
{
oDict.Add("Next", poParentItem->m_aoKids[i+1]->m_nObjId, 0);
}
if( poItem->m_nFlags )
oDict.Add("F", poItem->m_nFlags);
oDict.Add("Parent", poParentItem->m_nObjId, 0);
if( !poItem->m_aoKids.empty() )
{
oDict.Add("First", poItem->m_aoKids.front()->m_nObjId, 0);
oDict.Add("Last", poItem->m_aoKids.back()->m_nObjId, 0);
oDict.Add("Count", poItem->m_bOpen ?
poItem->m_nKidsRecCount : -poItem->m_nKidsRecCount);
}
VSIFPrintfL(m_fp, "%s\n", oDict.Serialize().c_str());
EndObj();
SerializeOutlineKids(poItem.get());
}
return true;
}
/************************************************************************/
/* CreateOutline() */
/************************************************************************/
bool GDALPDFComposerWriter::CreateOutline(const CPLXMLNode* psNode)
{
OutlineItem oRootOutlineItem;
if( !CreateOutlineFirstPass(psNode, &oRootOutlineItem) )
return false;
if( oRootOutlineItem.m_aoKids.empty() )
return true;
m_nOutlinesId = AllocNewObject();
StartObj(m_nOutlinesId);
GDALPDFDictionaryRW oDict;
oDict.Add("Type", GDALPDFObjectRW::CreateName("Outlines"))
.Add("First", oRootOutlineItem.m_aoKids.front()->m_nObjId, 0)
.Add("Last", oRootOutlineItem.m_aoKids.back()->m_nObjId, 0)
.Add("Count", oRootOutlineItem.m_nKidsRecCount);
VSIFPrintfL(m_fp, "%s\n", oDict.Serialize().c_str());
EndObj();
oRootOutlineItem.m_nObjId = m_nOutlinesId;
return SerializeOutlineKids(&oRootOutlineItem);
}
/************************************************************************/
/* GenerateGeoreferencing() */
/************************************************************************/
bool GDALPDFComposerWriter::GenerateGeoreferencing(const CPLXMLNode* psGeoreferencing,
double dfWidthInUserUnit,
double dfHeightInUserUnit,
GDALPDFObjectNum& nViewportId,
GDALPDFObjectNum& nLGIDictId,
Georeferencing& georeferencing)
{
double bboxX1 = 0;
double bboxY1 = 0;
double bboxX2 = dfWidthInUserUnit;
double bboxY2 = dfHeightInUserUnit;
const auto psBoundingBox = CPLGetXMLNode(psGeoreferencing, "BoundingBox");
if( psBoundingBox )
{
bboxX1 = CPLAtof(
CPLGetXMLValue(psBoundingBox, "x1", CPLSPrintf("%.18g", bboxX1)));
bboxY1 = CPLAtof(
CPLGetXMLValue(psBoundingBox, "y1", CPLSPrintf("%.18g", bboxY1)));
bboxX2 = CPLAtof(
CPLGetXMLValue(psBoundingBox, "x2", CPLSPrintf("%.18g", bboxX2)));
bboxY2 = CPLAtof(
CPLGetXMLValue(psBoundingBox, "y2", CPLSPrintf("%.18g", bboxY2)));
if( bboxX2 <= bboxX1 || bboxY2 <= bboxY1 )
{
CPLError(CE_Failure, CPLE_AppDefined, "Invalid BoundingBox");
return false;
}
}
std::vector<GDAL_GCP> aGCPs;
for(const auto* psIter = psGeoreferencing->psChild;
psIter; psIter = psIter->psNext)
{
if( psIter->eType == CXT_Element &&
strcmp(psIter->pszValue, "ControlPoint") == 0 )
{
const char* pszx = CPLGetXMLValue(psIter, "x", nullptr);
const char* pszy = CPLGetXMLValue(psIter, "y", nullptr);
const char* pszX = CPLGetXMLValue(psIter, "GeoX", nullptr);
const char* pszY = CPLGetXMLValue(psIter, "GeoY", nullptr);
if( !pszx || !pszy || !pszX || !pszY )
{
CPLError(CE_Failure, CPLE_NotSupported,
"At least one of x, y, GeoX or GeoY attribute "
"missing on ControlPoint");
return false;
}
GDAL_GCP gcp;
gcp.pszId = nullptr;
gcp.pszInfo = nullptr;
gcp.dfGCPPixel = CPLAtof(pszx);
gcp.dfGCPLine = CPLAtof(pszy);
gcp.dfGCPX = CPLAtof(pszX);
gcp.dfGCPY = CPLAtof(pszY);
gcp.dfGCPZ = 0;
aGCPs.emplace_back(std::move(gcp));
}
}
if( aGCPs.size() < 4 )
{
CPLError(CE_Failure, CPLE_NotSupported,
"At least 4 ControlPoint are required");
return false;
}
const char* pszBoundingPolygon =
CPLGetXMLValue(psGeoreferencing, "BoundingPolygon", nullptr);
std::vector<xyPair> aBoundingPolygon;
if( pszBoundingPolygon )
{
OGRGeometry* poGeom = nullptr;
OGRGeometryFactory::createFromWkt(pszBoundingPolygon, nullptr, &poGeom);
if( poGeom && poGeom->getGeometryType() == wkbPolygon )
{
auto poPoly = poGeom->toPolygon();
auto poRing = poPoly->getExteriorRing();
if( poRing )
{
if( psBoundingBox == nullptr )
{
OGREnvelope sEnvelope;
poRing->getEnvelope(&sEnvelope);
bboxX1 = sEnvelope.MinX;
bboxY1 = sEnvelope.MinY;
bboxX2 = sEnvelope.MaxX;
bboxY2 = sEnvelope.MaxY;
}
for( int i = 0; i < poRing->getNumPoints(); i++ )
{
aBoundingPolygon.emplace_back(
xyPair(poRing->getX(i), poRing->getY(i)));
}
}
}
delete poGeom;
}
const auto pszSRS = CPLGetXMLValue(psGeoreferencing, "SRS", nullptr);
if( !pszSRS )
{
CPLError(CE_Failure, CPLE_NotSupported,
"Missing SRS");
return false;
}
auto poSRS = cpl::make_unique<OGRSpatialReference>();
if( poSRS->SetFromUserInput(pszSRS) != OGRERR_NONE )
{
return false;
}
poSRS->SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
if( CPLTestBool(CPLGetXMLValue(psGeoreferencing, "ISO32000ExtensionFormat", "true")) )
{
nViewportId = GenerateISO32000_Georeferencing(
OGRSpatialReference::ToHandle(poSRS.get()),
bboxX1, bboxY1, bboxX2, bboxY2, aGCPs, aBoundingPolygon);
if( !nViewportId.toBool() )
{
return false;
}
}
if( CPLTestBool(CPLGetXMLValue(psGeoreferencing, "OGCBestPracticeFormat", "false")) )
{
nLGIDictId = GenerateOGC_BP_Georeferencing(
OGRSpatialReference::ToHandle(poSRS.get()),
bboxX1, bboxY1, bboxX2, bboxY2, aGCPs, aBoundingPolygon);
if( !nLGIDictId.toBool() )
{
return false;
}
}
const char* pszId = CPLGetXMLValue(psGeoreferencing, "id", nullptr);
if( pszId )
{
if (!GDALGCPsToGeoTransform( static_cast<int>(aGCPs.size()),
aGCPs.data(),
georeferencing.m_adfGT, TRUE))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Could not compute geotransform with approximate match.");
return false;
}
if( std::fabs(georeferencing.m_adfGT[2]) < 1e-5 *
std::fabs(georeferencing.m_adfGT[1]) &&
std::fabs(georeferencing.m_adfGT[4]) < 1e-5 *
std::fabs(georeferencing.m_adfGT[5]) )
{
georeferencing.m_adfGT[2] = 0;
georeferencing.m_adfGT[4] = 0;
}
if( georeferencing.m_adfGT[2] != 0 ||
georeferencing.m_adfGT[4] != 0 ||
georeferencing.m_adfGT[5] < 0 )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Geotransform should define a north-up non rotated area.");
return false;
}
georeferencing.m_osID = pszId;
georeferencing.m_oSRS = *(poSRS.get());
georeferencing.m_bboxX1 = bboxX1;
georeferencing.m_bboxY1 = bboxY1;
georeferencing.m_bboxX2 = bboxX2;
georeferencing.m_bboxY2 = bboxY2;
}
return true;
}
/************************************************************************/
/* GenerateISO32000_Georeferencing() */
/************************************************************************/
GDALPDFObjectNum GDALPDFComposerWriter::GenerateISO32000_Georeferencing(
OGRSpatialReferenceH hSRS,
double bboxX1, double bboxY1, double bboxX2, double bboxY2,
const std::vector<GDAL_GCP>& aGCPs,
const std::vector<xyPair>& aBoundingPolygon)
{
OGRSpatialReferenceH hSRSGeog = OSRCloneGeogCS(hSRS);
if( hSRSGeog == nullptr )
{
return GDALPDFObjectNum();
}
OSRSetAxisMappingStrategy(hSRSGeog, OAMS_TRADITIONAL_GIS_ORDER);
OGRCoordinateTransformationH hCT = OCTNewCoordinateTransformation( hSRS, hSRSGeog);
if( hCT == nullptr )
{
OSRDestroySpatialReference(hSRSGeog);
return GDALPDFObjectNum();
}
std::vector<GDAL_GCP> aGCPReprojected;
bool bSuccess = true;
for( const auto& gcp: aGCPs )
{
double X = gcp.dfGCPX;
double Y = gcp.dfGCPY;
bSuccess &= OCTTransform( hCT, 1,&X, &Y, nullptr ) == 1;
GDAL_GCP newGCP;
newGCP.pszId = nullptr;
newGCP.pszInfo = nullptr;
newGCP.dfGCPPixel = gcp.dfGCPPixel;
newGCP.dfGCPLine = gcp.dfGCPLine;
newGCP.dfGCPX = X;
newGCP.dfGCPY = Y;
newGCP.dfGCPZ = 0;
aGCPReprojected.emplace_back(std::move(newGCP));
}
if( !bSuccess )
{
OSRDestroySpatialReference(hSRSGeog);
OCTDestroyCoordinateTransformation(hCT);
return GDALPDFObjectNum();
}
const char * pszAuthorityCode = OSRGetAuthorityCode( hSRS, nullptr );
const char * pszAuthorityName = OSRGetAuthorityName( hSRS, nullptr );
int nEPSGCode = 0;
if( pszAuthorityName != nullptr && EQUAL(pszAuthorityName, "EPSG") &&
pszAuthorityCode != nullptr )
nEPSGCode = atoi(pszAuthorityCode);
int bIsGeographic = OSRIsGeographic(hSRS);
char* pszESRIWKT = nullptr;
const char* apszOptions[] = { "FORMAT=WKT1_ESRI", nullptr };
OSRExportToWktEx(hSRS, &pszESRIWKT, apszOptions);
OSRDestroySpatialReference(hSRSGeog);
OCTDestroyCoordinateTransformation(hCT);
auto nViewportId = AllocNewObject();
auto nMeasureId = AllocNewObject();
auto nGCSId = AllocNewObject();
StartObj(nViewportId);
GDALPDFDictionaryRW oViewPortDict;
oViewPortDict.Add("Type", GDALPDFObjectRW::CreateName("Viewport"))
.Add("Name", "Layer")
.Add("BBox", &((new GDALPDFArrayRW())
->Add(bboxX1).Add(bboxY1)
.Add(bboxX2).Add(bboxY2)))
.Add("Measure", nMeasureId, 0);
VSIFPrintfL(m_fp, "%s\n", oViewPortDict.Serialize().c_str());
EndObj();
GDALPDFArrayRW* poGPTS = new GDALPDFArrayRW();
GDALPDFArrayRW* poLPTS = new GDALPDFArrayRW();
const int nPrecision =
atoi(CPLGetConfigOption("PDF_COORD_DOUBLE_PRECISION", "16"));
for( const auto& gcp: aGCPReprojected )
{
poGPTS->AddWithPrecision(gcp.dfGCPY, nPrecision).
AddWithPrecision(gcp.dfGCPX, nPrecision); // Lat, long order
poLPTS->AddWithPrecision((gcp.dfGCPPixel - bboxX1) / (bboxX2 - bboxX1), nPrecision).
AddWithPrecision((gcp.dfGCPLine - bboxY1) / (bboxY2 - bboxY1), nPrecision);
}
StartObj(nMeasureId);
GDALPDFDictionaryRW oMeasureDict;
oMeasureDict .Add("Type", GDALPDFObjectRW::CreateName("Measure"))
.Add("Subtype", GDALPDFObjectRW::CreateName("GEO"))
.Add("GPTS", poGPTS)
.Add("LPTS", poLPTS)
.Add("GCS", nGCSId, 0);
if( !aBoundingPolygon.empty() )
{
GDALPDFArrayRW* poBounds = new GDALPDFArrayRW();
for( const auto& xy: aBoundingPolygon )
{
poBounds->Add((xy.x - bboxX1) / (bboxX2 - bboxX1)).
Add((xy.y - bboxY1) / (bboxY2 - bboxY1));
}
oMeasureDict.Add("Bounds", poBounds);
}
VSIFPrintfL(m_fp, "%s\n", oMeasureDict.Serialize().c_str());
EndObj();
StartObj(nGCSId);
GDALPDFDictionaryRW oGCSDict;
oGCSDict.Add("Type", GDALPDFObjectRW::CreateName(bIsGeographic ? "GEOGCS" : "PROJCS"))
.Add("WKT", pszESRIWKT);
if (nEPSGCode)
oGCSDict.Add("EPSG", nEPSGCode);
VSIFPrintfL(m_fp, "%s\n", oGCSDict.Serialize().c_str());
EndObj();
CPLFree(pszESRIWKT);
return nViewportId;
}
/************************************************************************/
/* GenerateOGC_BP_Georeferencing() */
/************************************************************************/
GDALPDFObjectNum GDALPDFComposerWriter::GenerateOGC_BP_Georeferencing(
OGRSpatialReferenceH hSRS,
double bboxX1, double bboxY1, double bboxX2, double bboxY2,
const std::vector<GDAL_GCP>& aGCPs,
const std::vector<xyPair>& aBoundingPolygon)
{
const OGRSpatialReference* poSRS = OGRSpatialReference::FromHandle(hSRS);
GDALPDFDictionaryRW* poProjectionDict = GDALPDFBuildOGC_BP_Projection(poSRS);
if (poProjectionDict == nullptr)
{
OSRDestroySpatialReference(hSRS);
return GDALPDFObjectNum();
}
GDALPDFArrayRW* poNeatLineArray = new GDALPDFArrayRW();
if( !aBoundingPolygon.empty() )
{
for( const auto& xy: aBoundingPolygon )
{
poNeatLineArray->Add(xy.x).Add(xy.y);
}
}
else
{
poNeatLineArray->Add(bboxX1).Add(bboxY1).
Add(bboxX2).Add(bboxY2);
}
GDALPDFArrayRW* poRegistration = new GDALPDFArrayRW();
for( const auto& gcp: aGCPs )
{
GDALPDFArrayRW* poGCP = new GDALPDFArrayRW();
poGCP->Add(gcp.dfGCPPixel, TRUE).Add(gcp.dfGCPLine, TRUE).
Add(gcp.dfGCPX, TRUE).Add(gcp.dfGCPY, TRUE);
poRegistration->Add(poGCP);
}
auto nLGIDictId = AllocNewObject();
StartObj(nLGIDictId);
GDALPDFDictionaryRW oLGIDict;
oLGIDict.Add("Type", GDALPDFObjectRW::CreateName("LGIDict"))
.Add("Version", "2.1")
.Add("Neatline", poNeatLineArray);
oLGIDict.Add("Registration", poRegistration);
/* GDAL extension */
if( CPLTestBool( CPLGetConfigOption("GDAL_PDF_OGC_BP_WRITE_WKT", "TRUE") ) )
{
char* pszWKT = nullptr;
OSRExportToWkt(hSRS, &pszWKT);
if( pszWKT )
poProjectionDict->Add("WKT", pszWKT);
CPLFree(pszWKT);
}
oLGIDict.Add("Projection", poProjectionDict);
VSIFPrintfL(m_fp, "%s\n", oLGIDict.Serialize().c_str());
EndObj();
return nLGIDictId;
}
/************************************************************************/