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| import os | |
| import magic | |
| from atom.api import Atom, Bytes, Int, List, Str, observe | |
| from enaml.image import Image | |
| # https://pypi.org/project/natsort/ | |
| from natsort import natsorted | |
| class ImageFolder(Atom): | |
| path = Str() | |
| image_data = Bytes() | |
| items = List(str) | |
| index = Int(default=0) | |
| _supported_formats = set(Image.format.items).union({'jpeg'}) - {'auto'} | |
| def _load_image(self): | |
| if self.items: | |
| with open(self.items[self.index], 'rb') as file: | |
| self.image_data = file.read() | |
| @observe('path') | |
| def _on_path(self, change): | |
| # Clear image, items, and reset index | |
| self.image_data = b'' | |
| self.items.clear() | |
| self.index = 0 | |
| # If the path is empty or doesn't exist just return | |
| path = change['value'] | |
| if not os.path.isdir(path): | |
| return | |
| # Collect all images recursively | |
| for root, folders, file_names in os.walk(path): | |
| for file_name in file_names: | |
| path = os.path.join(root, file_name) | |
| mime = magic.from_file(path, mime=True) | |
| kind, format = mime.split('/', 1) | |
| if kind == 'image' and format in self._supported_formats: | |
| self.items.append(path) | |
| self.items = natsorted(self.items) | |
| self._load_image() | |
| def next(self): | |
| self.index += 1 | |
| if self.index >= len(self.items): | |
| self.index = 0 | |
| self._load_image() | |
| def previous(self): | |
| self.index -= 1 | |
| if self.index < 0: | |
| self.index = len(self.items) - 1 | |
| self._load_image() |
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