sorted mode

README.md

@@ -19,6 +19,7 @@ slide [-t rotation_seconds] [-o background_opacity(0..255)] [-b blur_radius] -p
 * `image_folder`: where to search for images (.jpg files)
 * `-r` for recursive traversal of `image_folder`
 * `-s` for shuffle instead of random image rotation
+* `-S` for sorted rotation (files ordered by name, first images then subfolders)
 * `rotation_seconds(default=30)`: time until next random image is chosen from the given folder
 * `background_opacity(default=150)`: opacity of the background filling image between 0 (black background) and 255
 * `blur_radius(default=20)`: blur radius of the background filling image

src/imageselector.cpp

@@ -91,3 +91,52 @@ std::string ShuffleImageSelector::getNextImage()
   current_image_shuffle = current_image_shuffle + 1;
   return filename;
 }
+
+SortedImageSelector::SortedImageSelector(std::unique_ptr<PathTraverser>& pathTraverser):
+  ImageSelector(pathTraverser),
+  images()
+{
+  srand (time(NULL));
+}
+
+SortedImageSelector::~SortedImageSelector()
+{
+}
+
+bool operator<(const QString& lhs, const QString& rhs) noexcept{
+  if (lhs.count(QLatin1Char('/')) < rhs.count(QLatin1Char('/'))) {
+    return true;
+  }
+  if (lhs.count(QLatin1Char('/')) > rhs.count(QLatin1Char('/'))) {
+    return false;
+  }
+
+  return lhs.toStdString() < rhs.toStdString();
+
+}
+
+std::string SortedImageSelector::getNextImage()
+{
+  if (images.size() == 0)
+  {
+    images = pathTraverser->getImages();
+    std::sort(images.begin(), images.end());
+    std::cout << "read " << images.size() << " images." << std::endl;
+    for (int i = 0;i <images.size();i++){
+
+        std::cout << images[i].toStdString() << std::endl;
+    }
+  }
+  if (images.size() == 0)
+  {
+    return "";
+  }
+  std::string filename = pathTraverser->getImagePath(images.takeFirst().toStdString());
+  if(!QFileInfo::exists(QString(filename.c_str())))
+  {
+    std::cout << "file not found: " << filename << std::endl;
+    return getNextImage();
+  }
+  std::cout << "updating image: " << filename << std::endl;
+  return filename;
+}

src/imageselector.h

@@ -42,4 +42,14 @@ class ShuffleImageSelector : public ImageSelector
     QStringList images;
 };
 
+class SortedImageSelector : public ImageSelector
+{
+public:
+    SortedImageSelector(std::unique_ptr<PathTraverser>& pathTraverser);
+    virtual ~SortedImageSelector();
+    virtual std::string getNextImage();
+
+private:
+    QStringList images;
+};
 #endif // IMAGESELECTOR_H

src/main.cpp

@@ -27,7 +27,8 @@ int main(int argc, char *argv[])
   int opt;
   bool recursive = false;
   bool shuffle = false;
-  while ((opt = getopt(argc, argv, "b:p:t:o:rs")) != -1) {
+  bool sorted = false;
+  while ((opt = getopt(argc, argv, "b:p:t:o:rsS")) != -1) {
     switch (opt) {
       case 'p':
         path = optarg;
@@ -48,6 +49,9 @@ int main(int argc, char *argv[])
         shuffle = true;
         std::cout << "Shuffle mode is on." << std::endl;
         break;
+      case 'S':
+        sorted = true;
+        break;
       default: /* '?' */
         usage(argv[0]);
         return 1;
@@ -72,7 +76,11 @@ int main(int argc, char *argv[])
   }
 
   std::unique_ptr<ImageSelector> selector;
-  if (shuffle)
+  if (sorted)
+  {
+    selector = std::unique_ptr<ImageSelector>(new SortedImageSelector(pathTraverser));
+  }
+  else if (shuffle)
   {
     selector = std::unique_ptr<ImageSelector>(new ShuffleImageSelector(pathTraverser));
   }