- Add image list display type, you provide a comma delimited list of fully qualified path names to display

src/main.cpp

@@ -35,6 +35,7 @@ int main(int argc, char *argv[])
   bool fitAspectAxisToWindow = false;
   std::string valid_aspects = "alp"; // all, landscape, portait
   std::string overlay = "";
+  std::string imageList = ""; // comma delimited list of images to show
   int debugInt = 0;
   int stretchInt = 0;
   static struct option long_options[] =
@@ -43,7 +44,7 @@ int main(int argc, char *argv[])
     {"stretch", no_argument,       &stretchInt, 1},
   };
   int option_index = 0;
-  while ((opt = getopt_long(argc, argv, "b:p:t:o:O:a:rsSv", long_options, &option_index)) != -1) {
+  while ((opt = getopt_long(argc, argv, "b:p:t:o:O:a:i:rsSv", long_options, &option_index)) != -1) {
     switch (opt) {
       case 0:
           /* If this option set a flag, do nothing else now. */
@@ -88,6 +89,9 @@ int main(int argc, char *argv[])
       case 'v':
         debugMode = true;
         break;
+      case 'i':
+        imageList = optarg;
+        break;
       default: /* '?' */
         usage(argv[0]);
         return 1;
@@ -102,7 +106,7 @@ int main(int argc, char *argv[])
     fitAspectAxisToWindow = true;
   }
 
-  if (path.empty())
+  if (path.empty() && imageList.empty())
   {
     std::cout << "Error: Path expected." << std::endl;
     usage(argv[0]);
@@ -110,7 +114,11 @@ int main(int argc, char *argv[])
   }
 
   std::unique_ptr<PathTraverser> pathTraverser;
-  if (recursive)
+  if (!imageList.empty())
+  {
+    pathTraverser = std::unique_ptr<PathTraverser>(new ImageListPathTraverser(imageList));
+  }
+  else if (recursive)
   {
     pathTraverser = std::unique_ptr<PathTraverser>(new RecursivePathTraverser(path));
   }

src/pathtraverser.cpp

@@ -61,3 +61,24 @@ const std::string DefaultPathTraverser::getImagePath(const std::string image) co
 {
   return directory.filePath(QString(image.c_str())).toStdString();
 }
+
+
+ImageListPathTraverser::ImageListPathTraverser(const std::string &imageListString):
+  PathTraverser("")
+{
+  QString str = QString(imageListString.c_str());
+  imageList = str.split(QLatin1Char(','));
+}
+
+ImageListPathTraverser::~ImageListPathTraverser() {}
+
+
+QStringList ImageListPathTraverser::getImages() const
+{
+  return imageList;
+}
+
+const std::string ImageListPathTraverser::getImagePath(const std::string image) const
+{
+  return image;
+}

src/pathtraverser.h

@@ -41,4 +41,14 @@ class DefaultPathTraverser : public PathTraverser
     QDir directory;
 };
 
+class ImageListPathTraverser : public PathTraverser
+{
+  public:
+    ImageListPathTraverser(const std::string &imageListString);
+    virtual ~ImageListPathTraverser();
+    QStringList getImages() const;
+    virtual const std::string getImagePath(const std::string image) const;
+  private:
+    QStringList imageList;
+};
 #endif // PATHTRAVERSER_H