Support generating index-color PNG files

Based on the request http://stackoverflow.com/questions/27036474/how-do-make-doxygen-generate-index-color-png-files for index colored png files, this functionality will be included in the newer versions (2.39) of dot.
The functionality -Tpng:cairo:gd will automatically be used by doxygen, though the file extension would be wrong (.png:cairo:gd).
With this patch the :cairo:gd is stripped from the image extension, but not from the -T of the dot command.
In the doxywizard the different possibilities are supplied as well. Note however that the DOT_IMAGE_FORMAT name is not checked when read from the Doxyfile so it is possible to use other renderer / formats as well due to the generic solution with getDot ImageExtension.

1 files changed, 28 insertions, 18 deletions

diff --git a/src/dot.cpp b/src/dot.cpp
index 1182e8d..e5825af 100644
--- a/src/dot.cpp
+++ b/src/dot.cpp
@@ -659,7 +659,8 @@ static bool writeSVGFigureLink(FTextStream &out,const QCString &relPath,
 // support the PNG format, we need to check the result.
 static void checkDotResult(const QCString &imgName)
 {
-  if (Config_getEnum("DOT_IMAGE_FORMAT")=="png")
+  QCString imgExt = getDotImageExtension();
+  if (imgExt=="png")
   {
     FILE *f = portable_fopen(imgName,"rb");
     if (f)
@@ -2273,7 +2274,8 @@ void DotGfxHierarchyTable::createGraph(DotNode *n,FTextStream &out,
 {
   QDir d(path);
   QCString baseName;
-  QCString imgExt = Config_getEnum("DOT_IMAGE_FORMAT");
+  QCString imgExt = getDotImageExtension();
+  QCString imgFmt = Config_getEnum("DOT_IMAGE_FORMAT");
   baseName.sprintf("inherit_graph_%d",id);
   QCString imgName = baseName+"."+ imgExt;
   QCString mapName = baseName+".map";
@@ -2323,7 +2325,7 @@ void DotGfxHierarchyTable::createGraph(DotNode *n,FTextStream &out,
     resetReNumbering();
 
     DotRunner *dotRun = new DotRunner(dotName,d.absPath().data(),TRUE,absImgName);
-    dotRun->addJob(imgExt,absImgName);
+    dotRun->addJob(imgFmt,absImgName);
     dotRun->addJob(MAP_CMD,absMapName);
     DotManager::instance()->addRun(dotRun);
   }
@@ -3128,7 +3130,8 @@ QCString DotClassGraph::writeGraph(FTextStream &out,
   baseName = convertNameToFile(diskName());
 
   // derive target file names from baseName
-  QCString imgExt = Config_getEnum("DOT_IMAGE_FORMAT");
+  QCString imgExt = getDotImageExtension();
+  QCString imgFmt = Config_getEnum("DOT_IMAGE_FORMAT");
   QCString absBaseName = d.absPath().utf8()+"/"+baseName;
   QCString absDotName  = absBaseName+".dot";
   QCString absMapName  = absBaseName+".map";
@@ -3156,7 +3159,7 @@ QCString DotClassGraph::writeGraph(FTextStream &out,
     {
       DotRunner *dotRun = new DotRunner(absDotName,
                               d.absPath().data(),TRUE,absImgName);
-      dotRun->addJob(imgExt,absImgName);
+      dotRun->addJob(imgFmt,absImgName);
       if (generateImageMap) dotRun->addJob(MAP_CMD,absMapName);
       DotManager::instance()->addRun(dotRun);
 
@@ -3484,7 +3487,8 @@ QCString DotInclDepGraph::writeGraph(FTextStream &out,
   QCString mapName=escapeCharsInString(m_startNode->m_label,FALSE);
   if (m_inverse) mapName+="dep";
 
-  QCString imgExt = Config_getEnum("DOT_IMAGE_FORMAT");
+  QCString imgExt = getDotImageExtension();
+  QCString imgFmt = Config_getEnum("DOT_IMAGE_FORMAT");
   QCString absBaseName = d.absPath().utf8()+"/"+baseName;
   QCString absDotName  = absBaseName+".dot";
   QCString absMapName  = absBaseName+".map";
@@ -3512,7 +3516,7 @@ QCString DotInclDepGraph::writeGraph(FTextStream &out,
     {
       // run dot to create a bitmap image
       DotRunner *dotRun = new DotRunner(absDotName,d.absPath().data(),TRUE,absImgName);
-      dotRun->addJob(imgExt,absImgName);
+      dotRun->addJob(imgFmt,absImgName);
       if (generateImageMap) dotRun->addJob(MAP_CMD,absMapName);
       DotManager::instance()->addRun(dotRun);
     }
@@ -3796,7 +3800,8 @@ QCString DotCallGraph::writeGraph(FTextStream &out, GraphOutputFormat graphForma
   QCString baseName = m_diskName + (m_inverse ? "_icgraph" : "_cgraph");
   QCString mapName  = baseName;
 
-  QCString imgExt = Config_getEnum("DOT_IMAGE_FORMAT");
+  QCString imgExt = getDotImageExtension();
+  QCString imgFmt = Config_getEnum("DOT_IMAGE_FORMAT");
   QCString absBaseName = d.absPath().utf8()+"/"+baseName;
   QCString absDotName  = absBaseName+".dot";
   QCString absMapName  = absBaseName+".map";
@@ -3824,7 +3829,7 @@ QCString DotCallGraph::writeGraph(FTextStream &out, GraphOutputFormat graphForma
     {
       // run dot to create a bitmap image
       DotRunner *dotRun = new DotRunner(absDotName,d.absPath().data(),TRUE,absImgName);
-      dotRun->addJob(imgExt,absImgName);
+      dotRun->addJob(imgFmt,absImgName);
       if (generateImageMap) dotRun->addJob(MAP_CMD,absMapName);
       DotManager::instance()->addRun(dotRun);
 
@@ -3950,7 +3955,8 @@ QCString DotDirDeps::writeGraph(FTextStream &out,
   QCString baseName=m_dir->getOutputFileBase()+"_dep";
   QCString mapName=escapeCharsInString(baseName,FALSE);
 
-  QCString imgExt = Config_getEnum("DOT_IMAGE_FORMAT");
+  QCString imgExt = getDotImageExtension();
+  QCString imgFmt = Config_getEnum("DOT_IMAGE_FORMAT");
   QCString absBaseName = d.absPath().utf8()+"/"+baseName;
   QCString absDotName  = absBaseName+".dot";
   QCString absMapName  = absBaseName+".map";
@@ -3988,7 +3994,7 @@ QCString DotDirDeps::writeGraph(FTextStream &out,
     {
       // run dot to create a bitmap image
       DotRunner *dotRun = new DotRunner(absDotName,d.absPath().data(),TRUE,absImgName);
-      dotRun->addJob(imgExt,absImgName);
+      dotRun->addJob(imgFmt,absImgName);
       if (generateImageMap) dotRun->addJob(MAP_CMD,absMapName);
       DotManager::instance()->addRun(dotRun);
     }
@@ -4113,7 +4119,8 @@ void generateGraphLegend(const char *path)
   MD5SigToString(md5_sig,sigStr.rawData(),33);
   QCString absBaseName = (QCString)path+"/graph_legend";
   QCString absDotName  = absBaseName+".dot";
-  QCString imgExt      = Config_getEnum("DOT_IMAGE_FORMAT");
+  QCString imgExt = getDotImageExtension();
+  QCString imgFmt = Config_getEnum("DOT_IMAGE_FORMAT");
   QCString imgName     = "graph_legend."+imgExt;
   QCString absImgName  = absBaseName+"."+imgExt;
   if (checkAndUpdateMd5Signature(absBaseName,sigStr) ||
@@ -4133,7 +4140,7 @@ void generateGraphLegend(const char *path)
     // run dot to generate the a bitmap image from the graph
 
     DotRunner *dotRun = new DotRunner(absDotName,d.absPath().data(),TRUE,absImgName);
-    dotRun->addJob(imgExt,absImgName);
+    dotRun->addJob(imgFmt,absImgName);
     DotManager::instance()->addRun(dotRun);
   }
   else
@@ -4161,14 +4168,15 @@ void writeDotGraphFromFile(const char *inFile,const char *outDir,
     err("Output dir %s does not exist!\n",outDir); exit(1);
   }
 
-  QCString imgExt = Config_getEnum("DOT_IMAGE_FORMAT");
+  QCString imgExt = getDotImageExtension();
+  QCString imgFmt = Config_getEnum("DOT_IMAGE_FORMAT");
   QCString imgName = (QCString)outFile+"."+imgExt;
   QCString absImgName = d.absPath().utf8()+"/"+imgName;
   QCString absOutFile = d.absPath().utf8()+"/"+outFile;
 
   DotRunner dotRun(inFile,d.absPath().data(),FALSE,absImgName);
   if (format==GOF_BITMAP)
-    dotRun.addJob(imgExt,absImgName);
+    dotRun.addJob(imgFmt,absImgName);
   else // format==GOF_EPS
   {
     if (Config_getBool("USE_PDFLATEX"))
@@ -4216,7 +4224,8 @@ void writeDotImageMapFromFile(FTextStream &t,
   }
 
   QCString mapName = baseName+".map";
-  QCString imgExt = Config_getEnum("DOT_IMAGE_FORMAT");
+  QCString imgExt = getDotImageExtension();
+  QCString imgFmt = Config_getEnum("DOT_IMAGE_FORMAT");
   QCString imgName = baseName+"."+imgExt;
   QCString absOutFile = d.absPath().utf8()+"/"+mapName;
 
@@ -4511,7 +4520,8 @@ QCString DotGroupCollaboration::writeGraph( FTextStream &t,
   QCString sigStr(33);
   MD5Buffer((const unsigned char *)theGraph.data(),theGraph.length(),md5_sig);
   MD5SigToString(md5_sig,sigStr.rawData(),33);
-  QCString imgExt      = Config_getEnum("DOT_IMAGE_FORMAT");
+  QCString imgExt = getDotImageExtension();
+  QCString imgFmt = Config_getEnum("DOT_IMAGE_FORMAT");
   QCString baseName    = m_diskName;
   QCString imgName     = baseName+"."+imgExt;
   QCString absPath     = d.absPath().data();
@@ -4541,7 +4551,7 @@ QCString DotGroupCollaboration::writeGraph( FTextStream &t,
     if (graphFormat==GOF_BITMAP) // run dot to create a bitmap image
     {
       DotRunner *dotRun = new DotRunner(absDotName,d.absPath().data(),FALSE);
-      dotRun->addJob(imgExt,absImgName);
+      dotRun->addJob(imgFmt,absImgName);
       if (writeImageMap) dotRun->addJob(MAP_CMD,absMapName);
       DotManager::instance()->addRun(dotRun);